mirror of
git://git.code.sf.net/p/zsh/code
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3862 lines
95 KiB
C
3862 lines
95 KiB
C
/*
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* glob.c - filename generation
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*
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* This file is part of zsh, the Z shell.
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*
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* Copyright (c) 1992-1997 Paul Falstad
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* All rights reserved.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and to distribute modified versions of this software for any
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* purpose, provided that the above copyright notice and the following
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* two paragraphs appear in all copies of this software.
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*
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* In no event shall Paul Falstad or the Zsh Development Group be liable
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* to any party for direct, indirect, special, incidental, or consequential
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* damages arising out of the use of this software and its documentation,
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* even if Paul Falstad and the Zsh Development Group have been advised of
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* the possibility of such damage.
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*
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* Paul Falstad and the Zsh Development Group specifically disclaim any
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* warranties, including, but not limited to, the implied warranties of
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* merchantability and fitness for a particular purpose. The software
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* provided hereunder is on an "as is" basis, and Paul Falstad and the
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* Zsh Development Group have no obligation to provide maintenance,
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* support, updates, enhancements, or modifications.
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*
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*/
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#include "zsh.mdh"
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#include "glob.pro"
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#if defined(OFF_T_IS_64_BIT) && defined(__GNUC__)
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# define ALIGN64 __attribute__((aligned(8)))
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#else
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# define ALIGN64
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#endif
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/* flag for CSHNULLGLOB */
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typedef struct gmatch *Gmatch;
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struct gmatch {
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char *name;
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/*
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* Array of sort strings: one for each GS_EXEC sort type in
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* the glob qualifiers.
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*/
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char **sortstrs;
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off_t size ALIGN64;
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long atime;
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long mtime;
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long ctime;
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long links;
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off_t _size ALIGN64;
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long _atime;
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long _mtime;
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long _ctime;
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long _links;
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#ifdef GET_ST_ATIME_NSEC
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long ansec;
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long _ansec;
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#endif
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#ifdef GET_ST_MTIME_NSEC
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long mnsec;
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long _mnsec;
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#endif
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#ifdef GET_ST_CTIME_NSEC
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long cnsec;
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long _cnsec;
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#endif
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};
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#define GS_NAME 1
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#define GS_DEPTH 2
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#define GS_EXEC 4
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#define GS_SHIFT_BASE 8
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#define GS_SIZE (GS_SHIFT_BASE)
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#define GS_ATIME (GS_SHIFT_BASE << 1)
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#define GS_MTIME (GS_SHIFT_BASE << 2)
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#define GS_CTIME (GS_SHIFT_BASE << 3)
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#define GS_LINKS (GS_SHIFT_BASE << 4)
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#define GS_SHIFT 5
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#define GS__SIZE (GS_SIZE << GS_SHIFT)
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#define GS__ATIME (GS_ATIME << GS_SHIFT)
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#define GS__MTIME (GS_MTIME << GS_SHIFT)
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#define GS__CTIME (GS_CTIME << GS_SHIFT)
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#define GS__LINKS (GS_LINKS << GS_SHIFT)
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#define GS_DESC (GS_SHIFT_BASE << (2*GS_SHIFT))
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#define GS_NONE (GS_SHIFT_BASE << (2*GS_SHIFT+1))
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#define GS_NORMAL (GS_SIZE | GS_ATIME | GS_MTIME | GS_CTIME | GS_LINKS)
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#define GS_LINKED (GS_NORMAL << GS_SHIFT)
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/**/
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int badcshglob;
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/**/
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int pathpos; /* position in pathbuf (needed by pattern code) */
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/*
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* pathname buffer (needed by pattern code).
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* It is currently believed the string in here is stored metafied and is
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* unmetafied temporarily as needed by system calls.
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*/
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/**/
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char *pathbuf;
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typedef struct stat *Statptr; /* This makes the Ultrix compiler happy. Go figure. */
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/* modifier for unit conversions */
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#define TT_DAYS 0
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#define TT_HOURS 1
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#define TT_MINS 2
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#define TT_WEEKS 3
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#define TT_MONTHS 4
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#define TT_SECONDS 5
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#define TT_BYTES 0
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#define TT_POSIX_BLOCKS 1
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#define TT_KILOBYTES 2
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#define TT_MEGABYTES 3
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#define TT_GIGABYTES 4
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#define TT_TERABYTES 5
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typedef int (*TestMatchFunc) _((char *, struct stat *, off_t, char *));
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struct qual {
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struct qual *next; /* Next qualifier, must match */
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struct qual *or; /* Alternative set of qualifiers to match */
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TestMatchFunc func; /* Function to call to test match */
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off_t data ALIGN64; /* Argument passed to function */
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int sense; /* Whether asserting or negating */
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int amc; /* Flag for which time to test (a, m, c) */
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int range; /* Whether to test <, > or = (as per signum) */
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int units; /* Multiplier for time or size, respectively */
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char *sdata; /* currently only: expression to eval */
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};
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/* Prefix, suffix for doing zle trickery */
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/**/
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mod_export char *glob_pre, *glob_suf;
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/* Element of a glob sort */
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struct globsort {
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/* Sort type */
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int tp;
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/* Sort code to eval, if type is GS_EXEC */
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char *exec;
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};
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/* Maximum entries in sort array */
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#define MAX_SORTS (12)
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/* struct to easily save/restore current state */
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struct globdata {
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int gd_pathpos;
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char *gd_pathbuf;
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int gd_matchsz; /* size of matchbuf */
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int gd_matchct; /* number of matches found */
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int gd_pathbufsz; /* size of pathbuf */
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int gd_pathbufcwd; /* where did we chdir()'ed */
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Gmatch gd_matchbuf; /* array of matches */
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Gmatch gd_matchptr; /* &matchbuf[matchct] */
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char *gd_colonmod; /* colon modifiers in qualifier list */
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/* Qualifiers pertaining to current pattern */
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struct qual *gd_quals;
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/* Other state values for current pattern */
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int gd_qualct, gd_qualorct;
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int gd_range, gd_amc, gd_units;
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int gd_gf_nullglob, gd_gf_markdirs, gd_gf_noglobdots, gd_gf_listtypes;
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int gd_gf_numsort;
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int gd_gf_follow, gd_gf_sorts, gd_gf_nsorts;
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struct globsort gd_gf_sortlist[MAX_SORTS];
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LinkList gd_gf_pre_words, gd_gf_post_words;
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char *gd_glob_pre, *gd_glob_suf;
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};
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/* The variable with the current globbing state and convenience macros */
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static struct globdata curglobdata;
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#define matchsz (curglobdata.gd_matchsz)
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#define matchct (curglobdata.gd_matchct)
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#define pathbufsz (curglobdata.gd_pathbufsz)
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#define pathbufcwd (curglobdata.gd_pathbufcwd)
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#define matchbuf (curglobdata.gd_matchbuf)
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#define matchptr (curglobdata.gd_matchptr)
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#define colonmod (curglobdata.gd_colonmod)
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#define quals (curglobdata.gd_quals)
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#define qualct (curglobdata.gd_qualct)
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#define qualorct (curglobdata.gd_qualorct)
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#define g_range (curglobdata.gd_range)
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#define g_amc (curglobdata.gd_amc)
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#define g_units (curglobdata.gd_units)
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#define gf_nullglob (curglobdata.gd_gf_nullglob)
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#define gf_markdirs (curglobdata.gd_gf_markdirs)
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#define gf_noglobdots (curglobdata.gd_gf_noglobdots)
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#define gf_listtypes (curglobdata.gd_gf_listtypes)
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#define gf_numsort (curglobdata.gd_gf_numsort)
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#define gf_follow (curglobdata.gd_gf_follow)
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#define gf_sorts (curglobdata.gd_gf_sorts)
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#define gf_nsorts (curglobdata.gd_gf_nsorts)
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#define gf_sortlist (curglobdata.gd_gf_sortlist)
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#define gf_pre_words (curglobdata.gd_gf_pre_words)
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#define gf_post_words (curglobdata.gd_gf_post_words)
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/* and macros for save/restore */
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#define save_globstate(N) \
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do { \
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queue_signals(); \
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memcpy(&(N), &curglobdata, sizeof(struct globdata)); \
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(N).gd_pathpos = pathpos; \
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(N).gd_pathbuf = pathbuf; \
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(N).gd_glob_pre = glob_pre; \
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(N).gd_glob_suf = glob_suf; \
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pathbuf = NULL; \
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unqueue_signals(); \
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} while (0)
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#define restore_globstate(N) \
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do { \
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queue_signals(); \
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zfree(pathbuf, pathbufsz); \
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memcpy(&curglobdata, &(N), sizeof(struct globdata)); \
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pathpos = (N).gd_pathpos; \
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pathbuf = (N).gd_pathbuf; \
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glob_pre = (N).gd_glob_pre; \
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glob_suf = (N).gd_glob_suf; \
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unqueue_signals(); \
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} while (0)
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/* pathname component in filename patterns */
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struct complist {
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Complist next;
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Patprog pat;
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int closure; /* 1 if this is a (foo/)# */
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int follow; /* 1 to go thru symlinks */
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};
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/* Add a component to pathbuf: This keeps track of how *
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* far we are into a file name, since each path component *
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* must be matched separately. */
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/**/
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static void
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addpath(char *s, int l)
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{
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DPUTS(!pathbuf, "BUG: pathbuf not initialised");
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while (pathpos + l + 1 >= pathbufsz)
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pathbuf = zrealloc(pathbuf, pathbufsz *= 2);
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while (l--)
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pathbuf[pathpos++] = *s++;
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pathbuf[pathpos++] = '/';
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pathbuf[pathpos] = '\0';
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}
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/* stat the filename s appended to pathbuf. l should be true for lstat, *
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* false for stat. If st is NULL, the file is only checked for existance. *
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* s == "" is treated as s == ".". This is necessary since on most systems *
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* foo/ can be used to reference a non-directory foo. Returns nonzero if *
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* the file does not exists. */
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/**/
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static int
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statfullpath(const char *s, struct stat *st, int l)
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{
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char buf[PATH_MAX];
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DPUTS(strlen(s) + !*s + pathpos - pathbufcwd >= PATH_MAX,
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"BUG: statfullpath(): pathname too long");
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strcpy(buf, pathbuf + pathbufcwd);
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strcpy(buf + pathpos - pathbufcwd, s);
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if (!*s && *buf) {
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/*
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* Don't add the '.' if the path so far is empty, since
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* then we get bogus empty strings inserted as files.
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*/
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buf[pathpos - pathbufcwd] = '.';
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buf[pathpos - pathbufcwd + 1] = '\0';
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l = 0;
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}
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unmetafy(buf, NULL);
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if (!st) {
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char lbuf[1];
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return access(buf, F_OK) && (!l || readlink(buf, lbuf, 1) < 0);
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}
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return l ? lstat(buf, st) : stat(buf, st);
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}
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/* This may be set by qualifier functions to an array of strings to insert
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* into the list instead of the original string. */
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char **inserts;
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/* add a match to the list */
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/**/
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static void
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insert(char *s, int checked)
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{
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struct stat buf, buf2, *bp;
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char *news = s;
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int statted = 0;
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queue_signals();
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inserts = NULL;
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if (gf_listtypes || gf_markdirs) {
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/* Add the type marker to the end of the filename */
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mode_t mode;
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checked = statted = 1;
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if (statfullpath(s, &buf, 1)) {
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unqueue_signals();
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return;
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}
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mode = buf.st_mode;
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if (gf_follow) {
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if (!S_ISLNK(mode) || statfullpath(s, &buf2, 0))
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memcpy(&buf2, &buf, sizeof(buf));
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statted |= 2;
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mode = buf2.st_mode;
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}
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if (gf_listtypes || S_ISDIR(mode)) {
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int ll = strlen(s);
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news = (char *) hcalloc(ll + 2);
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strcpy(news, s);
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news[ll] = file_type(mode);
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news[ll + 1] = '\0';
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}
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}
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if (qualct || qualorct) {
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/* Go through the qualifiers, rejecting the file if appropriate */
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struct qual *qo, *qn;
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if (!statted && statfullpath(s, &buf, 1)) {
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unqueue_signals();
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return;
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}
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news = dyncat(pathbuf, news);
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statted = 1;
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qo = quals;
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for (qn = qo; qn && qn->func;) {
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g_range = qn->range;
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g_amc = qn->amc;
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g_units = qn->units;
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if ((qn->sense & 2) && !(statted & 2)) {
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/* If (sense & 2), we're following links */
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if (!S_ISLNK(buf.st_mode) || statfullpath(s, &buf2, 0))
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memcpy(&buf2, &buf, sizeof(buf));
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statted |= 2;
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}
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bp = (qn->sense & 2) ? &buf2 : &buf;
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/* Reject the file if the function returned zero *
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* and the sense was positive (sense&1 == 0), or *
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* vice versa. */
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if ((!((qn->func) (news, bp, qn->data, qn->sdata))
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^ qn->sense) & 1) {
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/* Try next alternative, or return if there are no more */
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if (!(qo = qo->or)) {
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unqueue_signals();
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return;
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}
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qn = qo;
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continue;
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}
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qn = qn->next;
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}
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} else if (!checked) {
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if (statfullpath(s, NULL, 1)) {
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unqueue_signals();
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return;
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}
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statted = 1;
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news = dyncat(pathbuf, news);
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} else
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news = dyncat(pathbuf, news);
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while (!inserts || (news = dupstring(*inserts++))) {
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if (colonmod) {
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/* Handle the remainder of the qualifier: e.g. (:r:s/foo/bar/). */
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char *mod = colonmod;
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modify(&news, &mod);
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}
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if (!statted && (gf_sorts & GS_NORMAL)) {
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statfullpath(s, &buf, 1);
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statted = 1;
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}
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if (!(statted & 2) && (gf_sorts & GS_LINKED)) {
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if (statted) {
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if (!S_ISLNK(buf.st_mode) || statfullpath(s, &buf2, 0))
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memcpy(&buf2, &buf, sizeof(buf));
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} else if (statfullpath(s, &buf2, 0))
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statfullpath(s, &buf2, 1);
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statted |= 2;
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}
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matchptr->name = news;
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if (statted & 1) {
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matchptr->size = buf.st_size;
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matchptr->atime = buf.st_atime;
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matchptr->mtime = buf.st_mtime;
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matchptr->ctime = buf.st_ctime;
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matchptr->links = buf.st_nlink;
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#ifdef GET_ST_ATIME_NSEC
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matchptr->ansec = GET_ST_ATIME_NSEC(buf);
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#endif
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#ifdef GET_ST_MTIME_NSEC
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matchptr->mnsec = GET_ST_MTIME_NSEC(buf);
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#endif
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#ifdef GET_ST_CTIME_NSEC
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matchptr->cnsec = GET_ST_CTIME_NSEC(buf);
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#endif
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}
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if (statted & 2) {
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matchptr->_size = buf2.st_size;
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matchptr->_atime = buf2.st_atime;
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matchptr->_mtime = buf2.st_mtime;
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matchptr->_ctime = buf2.st_ctime;
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matchptr->_links = buf2.st_nlink;
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#ifdef GET_ST_ATIME_NSEC
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matchptr->_ansec = GET_ST_ATIME_NSEC(buf2);
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#endif
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#ifdef GET_ST_MTIME_NSEC
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matchptr->_mnsec = GET_ST_MTIME_NSEC(buf2);
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#endif
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#ifdef GET_ST_CTIME_NSEC
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matchptr->_cnsec = GET_ST_CTIME_NSEC(buf2);
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#endif
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}
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matchptr++;
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if (++matchct == matchsz) {
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matchbuf = (Gmatch)zrealloc((char *)matchbuf,
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sizeof(struct gmatch) * (matchsz *= 2));
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matchptr = matchbuf + matchct;
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}
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if (!inserts)
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break;
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}
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unqueue_signals();
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return;
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}
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/* Do the globbing: scanner is called recursively *
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* with successive bits of the path until we've *
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* tried all of it. */
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/**/
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static void
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scanner(Complist q, int shortcircuit)
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{
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Patprog p;
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int closure;
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int pbcwdsav = pathbufcwd;
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int errssofar = errsfound;
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struct dirsav ds;
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if (!q || errflag)
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return;
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init_dirsav(&ds);
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if ((closure = q->closure)) {
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/* (foo/)# - match zero or more dirs */
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if (q->closure == 2) /* (foo/)## - match one or more dirs */
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q->closure = 1;
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else {
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scanner(q->next, shortcircuit);
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if (shortcircuit && shortcircuit == matchct)
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return;
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}
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}
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p = q->pat;
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/* Now the actual matching for the current path section. */
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|
if (p->flags & PAT_PURES) {
|
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/*
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* It's a straight string to the end of the path section.
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|
*/
|
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char *str = (char *)p + p->startoff;
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|
int l = p->patmlen;
|
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|
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if (l + !l + pathpos - pathbufcwd >= PATH_MAX) {
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int err;
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if (l >= PATH_MAX)
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return;
|
|
err = lchdir(unmeta(pathbuf + pathbufcwd), &ds, 0);
|
|
if (err == -1)
|
|
return;
|
|
if (err) {
|
|
zerr("current directory lost during glob");
|
|
return;
|
|
}
|
|
pathbufcwd = pathpos;
|
|
}
|
|
if (q->next) {
|
|
/* Not the last path section. Just add it to the path. */
|
|
int oppos = pathpos;
|
|
|
|
if (!errflag) {
|
|
int add = 1;
|
|
|
|
if (q->closure && *pathbuf) {
|
|
if (!strcmp(str, "."))
|
|
add = 0;
|
|
else if (!strcmp(str, "..")) {
|
|
struct stat sc, sr;
|
|
|
|
add = (stat("/", &sr) || stat(unmeta(pathbuf), &sc) ||
|
|
sr.st_ino != sc.st_ino ||
|
|
sr.st_dev != sc.st_dev);
|
|
}
|
|
}
|
|
if (add) {
|
|
addpath(str, l);
|
|
if (!closure || !statfullpath("", NULL, 1)) {
|
|
scanner((q->closure) ? q : q->next, shortcircuit);
|
|
if (shortcircuit && shortcircuit == matchct)
|
|
return;
|
|
}
|
|
pathbuf[pathpos = oppos] = '\0';
|
|
}
|
|
}
|
|
} else {
|
|
if (str[l])
|
|
str = dupstrpfx(str, l);
|
|
insert(str, 0);
|
|
if (shortcircuit && shortcircuit == matchct)
|
|
return;
|
|
}
|
|
} else {
|
|
/* Do pattern matching on current path section. */
|
|
char *fn = pathbuf[pathbufcwd] ? unmeta(pathbuf + pathbufcwd) : ".";
|
|
int dirs = !!q->next;
|
|
DIR *lock = opendir(fn);
|
|
char *subdirs = NULL;
|
|
int subdirlen = 0;
|
|
|
|
if (lock == NULL)
|
|
return;
|
|
while ((fn = zreaddir(lock, 1)) && !errflag) {
|
|
/* prefix and suffix are zle trickery */
|
|
if (!dirs && !colonmod &&
|
|
((glob_pre && !strpfx(glob_pre, fn))
|
|
|| (glob_suf && !strsfx(glob_suf, fn))))
|
|
continue;
|
|
errsfound = errssofar;
|
|
if (pattry(p, fn)) {
|
|
/* if this name matchs the pattern... */
|
|
if (pbcwdsav == pathbufcwd &&
|
|
strlen(fn) + pathpos - pathbufcwd >= PATH_MAX) {
|
|
int err;
|
|
|
|
DPUTS(pathpos == pathbufcwd,
|
|
"BUG: filename longer than PATH_MAX");
|
|
err = lchdir(unmeta(pathbuf + pathbufcwd), &ds, 0);
|
|
if (err == -1)
|
|
break;
|
|
if (err) {
|
|
zerr("current directory lost during glob");
|
|
break;
|
|
}
|
|
pathbufcwd = pathpos;
|
|
}
|
|
if (dirs) {
|
|
int l;
|
|
|
|
/*
|
|
* If not the last component in the path:
|
|
*
|
|
* If we made an approximation in the new path segment,
|
|
* then it is possible we made too many errors. For
|
|
* example, (ab)#(cb)# will match the directory abcb
|
|
* with one error if allowed to, even though it can
|
|
* match with none. This will stop later parts of the
|
|
* path matching, so we need to check by reducing the
|
|
* maximum number of errors and seeing if the directory
|
|
* still matches. Luckily, this is not a terribly
|
|
* common case, since complex patterns typically occur
|
|
* in the last part of the path which is not affected
|
|
* by this problem.
|
|
*/
|
|
if (errsfound > errssofar) {
|
|
forceerrs = errsfound - 1;
|
|
while (forceerrs >= errssofar) {
|
|
errsfound = errssofar;
|
|
if (!pattry(p, fn))
|
|
break;
|
|
forceerrs = errsfound - 1;
|
|
}
|
|
errsfound = forceerrs + 1;
|
|
forceerrs = -1;
|
|
}
|
|
if (closure) {
|
|
/* if matching multiple directories */
|
|
struct stat buf;
|
|
|
|
if (statfullpath(fn, &buf, !q->follow)) {
|
|
if (errno != ENOENT && errno != EINTR &&
|
|
errno != ENOTDIR && !errflag) {
|
|
zwarn("%e: %s", errno, fn);
|
|
}
|
|
continue;
|
|
}
|
|
if (!S_ISDIR(buf.st_mode))
|
|
continue;
|
|
}
|
|
l = strlen(fn) + 1;
|
|
subdirs = hrealloc(subdirs, subdirlen, subdirlen + l
|
|
+ sizeof(int));
|
|
strcpy(subdirs + subdirlen, fn);
|
|
subdirlen += l;
|
|
/* store the count of errors made so far, too */
|
|
memcpy(subdirs + subdirlen, (char *)&errsfound,
|
|
sizeof(int));
|
|
subdirlen += sizeof(int);
|
|
} else {
|
|
/* if the last filename component, just add it */
|
|
insert(fn, 1);
|
|
if (shortcircuit && shortcircuit == matchct) {
|
|
closedir(lock);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
closedir(lock);
|
|
if (subdirs) {
|
|
int oppos = pathpos;
|
|
|
|
for (fn = subdirs; fn < subdirs+subdirlen; ) {
|
|
int l = strlen(fn);
|
|
addpath(fn, l);
|
|
fn += l + 1;
|
|
memcpy((char *)&errsfound, fn, sizeof(int));
|
|
fn += sizeof(int);
|
|
/* scan next level */
|
|
scanner((q->closure) ? q : q->next, shortcircuit);
|
|
if (shortcircuit && shortcircuit == matchct)
|
|
return;
|
|
pathbuf[pathpos = oppos] = '\0';
|
|
}
|
|
hrealloc(subdirs, subdirlen, 0);
|
|
}
|
|
}
|
|
if (pbcwdsav < pathbufcwd) {
|
|
if (restoredir(&ds))
|
|
zerr("current directory lost during glob");
|
|
zsfree(ds.dirname);
|
|
if (ds.dirfd >= 0)
|
|
close(ds.dirfd);
|
|
pathbufcwd = pbcwdsav;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/* This function tokenizes a zsh glob pattern */
|
|
|
|
/**/
|
|
static Complist
|
|
parsecomplist(char *instr)
|
|
{
|
|
Patprog p1;
|
|
Complist l1;
|
|
char *str;
|
|
int compflags = gf_noglobdots ? (PAT_FILE|PAT_NOGLD) : PAT_FILE;
|
|
|
|
if (instr[0] == Star && instr[1] == Star) {
|
|
int shortglob = 0;
|
|
if (instr[2] == '/' || (instr[2] == Star && instr[3] == '/')
|
|
|| (shortglob = isset(GLOBSTARSHORT))) {
|
|
/* Match any number of directories. */
|
|
int follow;
|
|
|
|
/* with three stars, follow symbolic links */
|
|
follow = (instr[2] == Star);
|
|
/*
|
|
* With GLOBSTARSHORT, leave a star in place for the
|
|
* pattern inside the directory.
|
|
*/
|
|
instr += ((shortglob ? 1 : 3) + follow);
|
|
|
|
/* Now get the next path component if there is one. */
|
|
l1 = (Complist) zhalloc(sizeof *l1);
|
|
if ((l1->next = parsecomplist(instr)) == NULL) {
|
|
errflag |= ERRFLAG_ERROR;
|
|
return NULL;
|
|
}
|
|
l1->pat = patcompile(NULL, compflags | PAT_ANY, NULL);
|
|
l1->closure = 1; /* ...zero or more times. */
|
|
l1->follow = follow;
|
|
return l1;
|
|
}
|
|
}
|
|
|
|
/* Parse repeated directories such as (dir/)# and (dir/)## */
|
|
if (*(str = instr) == zpc_special[ZPC_INPAR] &&
|
|
!skipparens(Inpar, Outpar, (char **)&str) &&
|
|
*str == zpc_special[ZPC_HASH] && str[-2] == '/') {
|
|
instr++;
|
|
if (!(p1 = patcompile(instr, compflags, &instr)))
|
|
return NULL;
|
|
if (instr[0] == '/' && instr[1] == Outpar && instr[2] == Pound) {
|
|
int pdflag = 0;
|
|
|
|
instr += 3;
|
|
if (*instr == Pound) {
|
|
pdflag = 1;
|
|
instr++;
|
|
}
|
|
l1 = (Complist) zhalloc(sizeof *l1);
|
|
l1->pat = p1;
|
|
/* special case (/)# to avoid infinite recursion */
|
|
l1->closure = (*((char *)p1 + p1->startoff)) ? 1 + pdflag : 0;
|
|
l1->follow = 0;
|
|
l1->next = parsecomplist(instr);
|
|
return (l1->pat) ? l1 : NULL;
|
|
}
|
|
} else {
|
|
/* parse single path component */
|
|
if (!(p1 = patcompile(instr, compflags|PAT_FILET, &instr)))
|
|
return NULL;
|
|
/* then do the remaining path components */
|
|
if (*instr == '/' || !*instr) {
|
|
int ef = *instr == '/';
|
|
|
|
l1 = (Complist) zhalloc(sizeof *l1);
|
|
l1->pat = p1;
|
|
l1->closure = 0;
|
|
l1->next = ef ? parsecomplist(instr+1) : NULL;
|
|
return (ef && !l1->next) ? NULL : l1;
|
|
}
|
|
}
|
|
errflag |= ERRFLAG_ERROR;
|
|
return NULL;
|
|
}
|
|
|
|
/* turn a string into a Complist struct: this has path components */
|
|
|
|
/**/
|
|
static Complist
|
|
parsepat(char *str)
|
|
{
|
|
long assert;
|
|
int ignore;
|
|
|
|
patcompstart();
|
|
/*
|
|
* Check for initial globbing flags, so that they don't form
|
|
* a bogus path component.
|
|
*/
|
|
if ((*str == zpc_special[ZPC_INPAR] && str[1] == zpc_special[ZPC_HASH]) ||
|
|
(*str == zpc_special[ZPC_KSH_AT] && str[1] == Inpar &&
|
|
str[2] == zpc_special[ZPC_HASH])) {
|
|
str += (*str == Inpar) ? 2 : 3;
|
|
if (!patgetglobflags(&str, &assert, &ignore))
|
|
return NULL;
|
|
}
|
|
|
|
/* Now there is no (#X) in front, we can check the path. */
|
|
if (!pathbuf)
|
|
pathbuf = zalloc(pathbufsz = PATH_MAX);
|
|
DPUTS(pathbufcwd, "BUG: glob changed directory");
|
|
if (*str == '/') { /* pattern has absolute path */
|
|
str++;
|
|
pathbuf[0] = '/';
|
|
pathbuf[pathpos = 1] = '\0';
|
|
} else /* pattern is relative to pwd */
|
|
pathbuf[pathpos = 0] = '\0';
|
|
|
|
return parsecomplist(str);
|
|
}
|
|
|
|
/* get number after qualifier */
|
|
|
|
/**/
|
|
static off_t
|
|
qgetnum(char **s)
|
|
{
|
|
off_t v = 0;
|
|
|
|
if (!idigit(**s)) {
|
|
zerr("number expected");
|
|
return 0;
|
|
}
|
|
while (idigit(**s))
|
|
v = v * 10 + *(*s)++ - '0';
|
|
return v;
|
|
}
|
|
|
|
/* get mode spec after qualifier */
|
|
|
|
/**/
|
|
static zlong
|
|
qgetmodespec(char **s)
|
|
{
|
|
zlong yes = 0, no = 0, val, mask, t;
|
|
char *p = *s, c, how, end;
|
|
|
|
if ((c = *p) == '=' || c == Equals || c == '+' || c == '-' ||
|
|
c == '?' || c == Quest || (c >= '0' && c <= '7')) {
|
|
end = 0;
|
|
c = 0;
|
|
} else {
|
|
end = (c == '<' ? '>' :
|
|
(c == '[' ? ']' :
|
|
(c == '{' ? '}' :
|
|
(c == Inang ? Outang :
|
|
(c == Inbrack ? Outbrack :
|
|
(c == Inbrace ? Outbrace : c))))));
|
|
p++;
|
|
}
|
|
do {
|
|
mask = 0;
|
|
while (((c = *p) == 'u' || c == 'g' || c == 'o' || c == 'a') && end) {
|
|
switch (c) {
|
|
case 'o': mask |= 01007; break;
|
|
case 'g': mask |= 02070; break;
|
|
case 'u': mask |= 04700; break;
|
|
case 'a': mask |= 07777; break;
|
|
}
|
|
p++;
|
|
}
|
|
how = ((c == '+' || c == '-') ? c : '=');
|
|
if (c == '+' || c == '-' || c == '=' || c == Equals)
|
|
p++;
|
|
val = 0;
|
|
if (mask) {
|
|
while ((c = *p++) != ',' && c != end) {
|
|
switch (c) {
|
|
case 'x': val |= 00111; break;
|
|
case 'w': val |= 00222; break;
|
|
case 'r': val |= 00444; break;
|
|
case 's': val |= 06000; break;
|
|
case 't': val |= 01000; break;
|
|
case '0': case '1': case '2': case '3':
|
|
case '4': case '5': case '6': case '7':
|
|
t = ((zlong) c - '0');
|
|
val |= t | (t << 3) | (t << 6);
|
|
break;
|
|
default:
|
|
zerr("invalid mode specification");
|
|
return 0;
|
|
}
|
|
}
|
|
if (how == '=' || how == '+') {
|
|
yes |= val & mask;
|
|
val = ~val;
|
|
}
|
|
if (how == '=' || how == '-')
|
|
no |= val & mask;
|
|
} else if (!(end && c == end) && c != ',' && c) {
|
|
t = 07777;
|
|
while ((c = *p) == '?' || c == Quest ||
|
|
(c >= '0' && c <= '7')) {
|
|
if (c == '?' || c == Quest) {
|
|
t = (t << 3) | 7;
|
|
val <<= 3;
|
|
} else {
|
|
t <<= 3;
|
|
val = (val << 3) | ((zlong) c - '0');
|
|
}
|
|
p++;
|
|
}
|
|
if (end && c != end && c != ',') {
|
|
zerr("invalid mode specification");
|
|
return 0;
|
|
}
|
|
if (how == '=') {
|
|
yes = (yes & ~t) | val;
|
|
no = (no & ~t) | (~val & ~t);
|
|
} else if (how == '+')
|
|
yes |= val;
|
|
else
|
|
no |= val;
|
|
} else {
|
|
zerr("invalid mode specification");
|
|
return 0;
|
|
}
|
|
} while (end && c != end);
|
|
|
|
*s = p;
|
|
return ((yes & 07777) | ((no & 07777) << 12));
|
|
}
|
|
|
|
static int
|
|
gmatchcmp(Gmatch a, Gmatch b)
|
|
{
|
|
int i;
|
|
off_t r = 0L;
|
|
struct globsort *s;
|
|
char **asortstrp = NULL, **bsortstrp = NULL;
|
|
|
|
for (i = gf_nsorts, s = gf_sortlist; i; i--, s++) {
|
|
switch (s->tp & ~GS_DESC) {
|
|
case GS_NAME:
|
|
r = zstrcmp(b->name, a->name, gf_numsort ? SORTIT_NUMERICALLY : 0);
|
|
break;
|
|
case GS_DEPTH:
|
|
{
|
|
char *aptr = a->name, *bptr = b->name;
|
|
int slasha = 0, slashb = 0;
|
|
/* Count slashes. Trailing slashes don't count. */
|
|
while (*aptr && *aptr == *bptr)
|
|
aptr++, bptr++;
|
|
/* Like I just said... */
|
|
if ((!*aptr || !*bptr) && aptr > a->name && aptr[-1] == '/')
|
|
aptr--, bptr--;
|
|
if (*aptr)
|
|
for (; aptr[1]; aptr++)
|
|
if (*aptr == '/') {
|
|
slasha = 1;
|
|
break;
|
|
}
|
|
if (*bptr)
|
|
for (; bptr[1]; bptr++)
|
|
if (*bptr == '/') {
|
|
slashb = 1;
|
|
break;
|
|
}
|
|
r = slasha - slashb;
|
|
}
|
|
break;
|
|
case GS_EXEC:
|
|
if (!asortstrp) {
|
|
asortstrp = a->sortstrs;
|
|
bsortstrp = b->sortstrs;
|
|
} else {
|
|
asortstrp++;
|
|
bsortstrp++;
|
|
}
|
|
r = zstrcmp(*bsortstrp, *asortstrp,
|
|
gf_numsort ? SORTIT_NUMERICALLY : 0);
|
|
break;
|
|
case GS_SIZE:
|
|
r = b->size - a->size;
|
|
break;
|
|
case GS_ATIME:
|
|
r = a->atime - b->atime;
|
|
#ifdef GET_ST_ATIME_NSEC
|
|
if (!r)
|
|
r = a->ansec - b->ansec;
|
|
#endif
|
|
break;
|
|
case GS_MTIME:
|
|
r = a->mtime - b->mtime;
|
|
#ifdef GET_ST_MTIME_NSEC
|
|
if (!r)
|
|
r = a->mnsec - b->mnsec;
|
|
#endif
|
|
break;
|
|
case GS_CTIME:
|
|
r = a->ctime - b->ctime;
|
|
#ifdef GET_ST_CTIME_NSEC
|
|
if (!r)
|
|
r = a->cnsec - b->cnsec;
|
|
#endif
|
|
break;
|
|
case GS_LINKS:
|
|
r = b->links - a->links;
|
|
break;
|
|
case GS__SIZE:
|
|
r = b->_size - a->_size;
|
|
break;
|
|
case GS__ATIME:
|
|
r = a->_atime - b->_atime;
|
|
#ifdef GET_ST_ATIME_NSEC
|
|
if (!r)
|
|
r = a->_ansec - b->_ansec;
|
|
#endif
|
|
break;
|
|
case GS__MTIME:
|
|
r = a->_mtime - b->_mtime;
|
|
#ifdef GET_ST_MTIME_NSEC
|
|
if (!r)
|
|
r = a->_mnsec - b->_mnsec;
|
|
#endif
|
|
break;
|
|
case GS__CTIME:
|
|
r = a->_ctime - b->_ctime;
|
|
#ifdef GET_ST_CTIME_NSEC
|
|
if (!r)
|
|
r = a->_cnsec - b->_cnsec;
|
|
#endif
|
|
break;
|
|
case GS__LINKS:
|
|
r = b->_links - a->_links;
|
|
break;
|
|
}
|
|
if (r)
|
|
return (s->tp & GS_DESC) ?
|
|
(r < 0L ? 1 : -1) :
|
|
(r > 0L ? 1 : -1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Duplicate a list of qualifiers using the `next' linkage (not the
|
|
* `or' linkage). Return the head element and set *last (if last non-NULL)
|
|
* to point to the last element of the new list. All allocation is on the
|
|
* heap (or off the heap?)
|
|
*/
|
|
static struct qual *dup_qual_list(struct qual *orig, struct qual **lastp)
|
|
{
|
|
struct qual *qfirst = NULL, *qlast = NULL;
|
|
|
|
while (orig) {
|
|
struct qual *qnew = (struct qual *)zhalloc(sizeof(struct qual));
|
|
*qnew = *orig;
|
|
qnew->next = qnew->or = NULL;
|
|
|
|
if (!qfirst)
|
|
qfirst = qnew;
|
|
if (qlast)
|
|
qlast->next = qnew;
|
|
qlast = qnew;
|
|
|
|
orig = orig->next;
|
|
}
|
|
|
|
if (lastp)
|
|
*lastp = qlast;
|
|
return qfirst;
|
|
}
|
|
|
|
|
|
/*
|
|
* Get a glob string for execution, following e, P or + qualifiers.
|
|
* Pointer is character after the e, P or +.
|
|
*/
|
|
|
|
/**/
|
|
static char *
|
|
glob_exec_string(char **sp)
|
|
{
|
|
char sav, *tt, *sdata, *s = *sp;
|
|
int plus;
|
|
|
|
if (s[-1] == '+') {
|
|
plus = 0;
|
|
tt = itype_end(s, IIDENT, 0);
|
|
if (tt == s)
|
|
{
|
|
zerr("missing identifier after `+'");
|
|
return NULL;
|
|
}
|
|
} else {
|
|
tt = get_strarg(s, &plus);
|
|
if (!*tt)
|
|
{
|
|
zerr("missing end of string");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
sav = *tt;
|
|
*tt = '\0';
|
|
sdata = dupstring(s + plus);
|
|
untokenize(sdata);
|
|
*tt = sav;
|
|
if (sav)
|
|
*sp = tt + plus;
|
|
else
|
|
*sp = tt;
|
|
|
|
return sdata;
|
|
}
|
|
|
|
/*
|
|
* Insert a glob match.
|
|
* If there were words to prepend given by the P glob qualifier, do so.
|
|
*/
|
|
static void
|
|
insert_glob_match(LinkList list, LinkNode next, char *data)
|
|
{
|
|
if (gf_pre_words) {
|
|
LinkNode added;
|
|
for (added = firstnode(gf_pre_words); added; incnode(added)) {
|
|
next = insertlinknode(list, next, dupstring(getdata(added)));
|
|
}
|
|
}
|
|
|
|
next = insertlinknode(list, next, data);
|
|
|
|
if (gf_post_words) {
|
|
LinkNode added;
|
|
for (added = firstnode(gf_post_words); added; incnode(added)) {
|
|
next = insertlinknode(list, next, dupstring(getdata(added)));
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return
|
|
* 1 if str ends in bare glob qualifiers
|
|
* 2 if str ends in non-bare glob qualifiers (#q)
|
|
* 0 otherwise.
|
|
*
|
|
* str is the string to check.
|
|
* sl is its length (to avoid recalculation).
|
|
* nobareglob is 1 if bare glob qualifiers are not allowed.
|
|
* *sp, if sp is not null, will be a pointer to the opening parenthesis.
|
|
*/
|
|
|
|
/**/
|
|
int
|
|
checkglobqual(char *str, int sl, int nobareglob, char **sp)
|
|
{
|
|
char *s;
|
|
int paren, ret = 1;
|
|
|
|
if (str[sl - 1] != Outpar)
|
|
return 0;
|
|
|
|
/* Check these are really qualifiers, not a set of *
|
|
* alternatives or exclusions. We can be more *
|
|
* lenient with an explicit (#q) than with a bare *
|
|
* set of qualifiers. */
|
|
paren = 0;
|
|
for (s = str + sl - 2; *s && (*s != Inpar || paren); s--) {
|
|
switch (*s) {
|
|
case Outpar:
|
|
paren++; /*FALLTHROUGH*/
|
|
case Bar:
|
|
if (!zpc_disables[ZPC_BAR])
|
|
nobareglob = 1;
|
|
break;
|
|
case Tilde:
|
|
if (isset(EXTENDEDGLOB) && !zpc_disables[ZPC_TILDE])
|
|
nobareglob = 1;
|
|
break;
|
|
case Inpar:
|
|
paren--;
|
|
break;
|
|
}
|
|
if (s == str)
|
|
break;
|
|
}
|
|
if (*s != Inpar)
|
|
return 0;
|
|
if (isset(EXTENDEDGLOB) && !zpc_disables[ZPC_HASH] && s[1] == Pound) {
|
|
if (s[2] != 'q')
|
|
return 0;
|
|
ret = 2;
|
|
} else if (nobareglob)
|
|
return 0;
|
|
|
|
if (sp)
|
|
*sp = s;
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Main entry point to the globbing code for filename globbing. *
|
|
* np points to a node in the list list which will be expanded *
|
|
* into a series of nodes. */
|
|
|
|
/**/
|
|
void
|
|
zglob(LinkList list, LinkNode np, int nountok)
|
|
{
|
|
struct qual *qo, *qn, *ql;
|
|
LinkNode node = prevnode(np);
|
|
char *str; /* the pattern */
|
|
int sl; /* length of the pattern */
|
|
Complist q; /* pattern after parsing */
|
|
char *ostr = (char *)getdata(np); /* the pattern before the parser */
|
|
/* chops it up */
|
|
int first = 0, end = -1; /* index of first match to return */
|
|
/* and index+1 of the last match */
|
|
struct globdata saved; /* saved glob state */
|
|
int nobareglob = !isset(BAREGLOBQUAL);
|
|
int shortcircuit = 0; /* How many files to match; */
|
|
/* 0 means no limit */
|
|
|
|
if (unset(GLOBOPT) || !haswilds(ostr) || unset(EXECOPT)) {
|
|
if (!nountok)
|
|
untokenize(ostr);
|
|
return;
|
|
}
|
|
save_globstate(saved);
|
|
|
|
str = dupstring(ostr);
|
|
uremnode(list, np);
|
|
|
|
/* quals will hold the complete list of qualifiers (file static). */
|
|
quals = NULL;
|
|
/*
|
|
* qualct and qualorct indicate we have qualifiers in the last
|
|
* alternative, or a set of alternatives, respectively. They
|
|
* are not necessarily an accurate count, however.
|
|
*/
|
|
qualct = qualorct = 0;
|
|
/*
|
|
* colonmod is a concatenated list of all colon modifiers found in
|
|
* all sets of qualifiers.
|
|
*/
|
|
colonmod = NULL;
|
|
/* The gf_* flags are qualifiers which are applied globally. */
|
|
gf_nullglob = isset(NULLGLOB);
|
|
gf_markdirs = isset(MARKDIRS);
|
|
gf_listtypes = gf_follow = 0;
|
|
gf_noglobdots = unset(GLOBDOTS);
|
|
gf_numsort = isset(NUMERICGLOBSORT);
|
|
gf_sorts = gf_nsorts = 0;
|
|
gf_pre_words = gf_post_words = NULL;
|
|
|
|
/* Check for qualifiers */
|
|
while (!nobareglob ||
|
|
(isset(EXTENDEDGLOB) && !zpc_disables[ZPC_HASH])) {
|
|
struct qual *newquals;
|
|
char *s;
|
|
int sense, qualsfound;
|
|
off_t data;
|
|
char *sdata, *newcolonmod;
|
|
int (*func) _((char *, Statptr, off_t, char *));
|
|
|
|
/*
|
|
* Initialise state variables for current file pattern.
|
|
* newquals is the root for the linked list of all qualifiers.
|
|
* qo is the root of the current list of alternatives.
|
|
* ql is the end of the current alternative where the `next' will go.
|
|
* qn is the current qualifier node to be added.
|
|
*
|
|
* Here is an attempt at a diagram. An `or' is added horizontally
|
|
* to the top line, a `next' at the bottom of the right hand line.
|
|
* `qn' is usually NULL unless a new `or' has just been added.
|
|
*
|
|
* quals -> x -> x -> qo
|
|
* | | |
|
|
* x x x
|
|
* | |
|
|
* x ql
|
|
*
|
|
* In fact, after each loop the complete set is in the file static
|
|
* `quals'. Then, if we have a second set of qualifiers, we merge
|
|
* the lists together. This is only tricky if one or both have an
|
|
* `or' in them; then we need to distribute over all alternatives.
|
|
*/
|
|
newquals = qo = qn = ql = NULL;
|
|
|
|
sl = strlen(str);
|
|
if (!(qualsfound = checkglobqual(str, sl, nobareglob, &s)))
|
|
break;
|
|
|
|
/* Real qualifiers found. */
|
|
nobareglob = 1;
|
|
sense = 0; /* bit 0 for match (0)/don't match (1) */
|
|
/* bit 1 for follow links (2), don't (0) */
|
|
data = 0; /* Any numerical argument required */
|
|
sdata = NULL; /* Any list argument required */
|
|
newcolonmod = NULL; /* Contains trailing colon modifiers */
|
|
|
|
str[sl-1] = 0;
|
|
*s++ = 0;
|
|
if (qualsfound == 2)
|
|
s += 2;
|
|
while (*s && !newcolonmod) {
|
|
func = (int (*) _((char *, Statptr, off_t, char *)))0;
|
|
if (idigit(*s)) {
|
|
/* Store numeric argument for qualifier */
|
|
func = qualflags;
|
|
data = 0;
|
|
sdata = NULL;
|
|
while (idigit(*s))
|
|
data = data * 010 + (*s++ - '0');
|
|
} else if (*s == ',') {
|
|
/* A comma separates alternative sets of qualifiers */
|
|
s++;
|
|
sense = 0;
|
|
if (qualct) {
|
|
qn = (struct qual *)hcalloc(sizeof *qn);
|
|
qo->or = qn;
|
|
qo = qn;
|
|
qualorct++;
|
|
qualct = 0;
|
|
ql = NULL;
|
|
}
|
|
} else {
|
|
switch (*s++) {
|
|
case ':':
|
|
/* Remaining arguments are history-type *
|
|
* colon substitutions, handled separately. */
|
|
newcolonmod = s - 1;
|
|
untokenize(newcolonmod);
|
|
if (colonmod) {
|
|
/* remember we're searching backwards */
|
|
colonmod = dyncat(newcolonmod, colonmod);
|
|
} else
|
|
colonmod = newcolonmod;
|
|
break;
|
|
case Hat:
|
|
case '^':
|
|
/* Toggle sense: go from positive to *
|
|
* negative match and vice versa. */
|
|
sense ^= 1;
|
|
break;
|
|
case '-':
|
|
/* Toggle matching of symbolic links */
|
|
sense ^= 2;
|
|
break;
|
|
case '@':
|
|
/* Match symbolic links */
|
|
func = qualislnk;
|
|
break;
|
|
case Equals:
|
|
case '=':
|
|
/* Match sockets */
|
|
func = qualissock;
|
|
break;
|
|
case 'p':
|
|
/* Match named pipes */
|
|
func = qualisfifo;
|
|
break;
|
|
case '/':
|
|
/* Match directories */
|
|
func = qualisdir;
|
|
break;
|
|
case '.':
|
|
/* Match regular files */
|
|
func = qualisreg;
|
|
break;
|
|
case '%':
|
|
/* Match special files: block, *
|
|
* character or any device */
|
|
if (*s == 'b')
|
|
s++, func = qualisblk;
|
|
else if (*s == 'c')
|
|
s++, func = qualischr;
|
|
else
|
|
func = qualisdev;
|
|
break;
|
|
case Star:
|
|
/* Match executable plain files */
|
|
func = qualiscom;
|
|
break;
|
|
case 'R':
|
|
/* Match world-readable files */
|
|
func = qualflags;
|
|
data = 0004;
|
|
break;
|
|
case 'W':
|
|
/* Match world-writeable files */
|
|
func = qualflags;
|
|
data = 0002;
|
|
break;
|
|
case 'X':
|
|
/* Match world-executable files */
|
|
func = qualflags;
|
|
data = 0001;
|
|
break;
|
|
case 'A':
|
|
func = qualflags;
|
|
data = 0040;
|
|
break;
|
|
case 'I':
|
|
func = qualflags;
|
|
data = 0020;
|
|
break;
|
|
case 'E':
|
|
func = qualflags;
|
|
data = 0010;
|
|
break;
|
|
case 'r':
|
|
/* Match files readable by current process */
|
|
func = qualflags;
|
|
data = 0400;
|
|
break;
|
|
case 'w':
|
|
/* Match files writeable by current process */
|
|
func = qualflags;
|
|
data = 0200;
|
|
break;
|
|
case 'x':
|
|
/* Match files executable by current process */
|
|
func = qualflags;
|
|
data = 0100;
|
|
break;
|
|
case 's':
|
|
/* Match setuid files */
|
|
func = qualflags;
|
|
data = 04000;
|
|
break;
|
|
case 'S':
|
|
/* Match setgid files */
|
|
func = qualflags;
|
|
data = 02000;
|
|
break;
|
|
case 't':
|
|
func = qualflags;
|
|
data = 01000;
|
|
break;
|
|
case 'd':
|
|
/* Match device files by device number *
|
|
* (as given by stat's st_dev element). */
|
|
func = qualdev;
|
|
data = qgetnum(&s);
|
|
break;
|
|
case 'l':
|
|
/* Match files with the given no. of hard links */
|
|
func = qualnlink;
|
|
g_amc = -1;
|
|
goto getrange;
|
|
case 'U':
|
|
/* Match files owned by effective user ID */
|
|
func = qualuid;
|
|
data = geteuid();
|
|
break;
|
|
case 'G':
|
|
/* Match files owned by effective group ID */
|
|
func = qualgid;
|
|
data = getegid();
|
|
break;
|
|
case 'u':
|
|
/* Match files owned by given user id */
|
|
func = qualuid;
|
|
/* either the actual uid... */
|
|
if (idigit(*s))
|
|
data = qgetnum(&s);
|
|
else {
|
|
/* ... or a user name */
|
|
char sav, *tt;
|
|
int arglen;
|
|
|
|
/* Find matching delimiters */
|
|
tt = get_strarg(s, &arglen);
|
|
if (!*tt) {
|
|
zerr("missing delimiter for 'u' glob qualifier");
|
|
data = 0;
|
|
} else {
|
|
#ifdef USE_GETPWNAM
|
|
struct passwd *pw;
|
|
sav = *tt;
|
|
*tt = '\0';
|
|
|
|
if ((pw = getpwnam(s + arglen)))
|
|
data = pw->pw_uid;
|
|
else {
|
|
zerr("unknown user");
|
|
data = 0;
|
|
}
|
|
*tt = sav;
|
|
#else /* !USE_GETPWNAM */
|
|
sav = *tt;
|
|
zerr("unknown user");
|
|
data = 0;
|
|
#endif /* !USE_GETPWNAM */
|
|
if (sav)
|
|
s = tt + arglen;
|
|
else
|
|
s = tt;
|
|
}
|
|
}
|
|
break;
|
|
case 'g':
|
|
/* Given gid or group id... works like `u' */
|
|
func = qualgid;
|
|
/* either the actual gid... */
|
|
if (idigit(*s))
|
|
data = qgetnum(&s);
|
|
else {
|
|
/* ...or a delimited group name. */
|
|
char sav, *tt;
|
|
int arglen;
|
|
|
|
tt = get_strarg(s, &arglen);
|
|
if (!*tt) {
|
|
zerr("missing delimiter for 'g' glob qualifier");
|
|
data = 0;
|
|
} else {
|
|
#ifdef USE_GETGRNAM
|
|
struct group *gr;
|
|
sav = *tt;
|
|
*tt = '\0';
|
|
|
|
if ((gr = getgrnam(s + arglen)))
|
|
data = gr->gr_gid;
|
|
else {
|
|
zerr("unknown group");
|
|
data = 0;
|
|
}
|
|
*tt = sav;
|
|
#else /* !USE_GETGRNAM */
|
|
sav = *tt;
|
|
zerr("unknown group");
|
|
data = 0;
|
|
#endif /* !USE_GETGRNAM */
|
|
if (sav)
|
|
s = tt + arglen;
|
|
else
|
|
s = tt;
|
|
}
|
|
}
|
|
break;
|
|
case 'f':
|
|
/* Match modes with chmod-spec. */
|
|
func = qualmodeflags;
|
|
data = qgetmodespec(&s);
|
|
break;
|
|
case 'F':
|
|
func = qualnonemptydir;
|
|
break;
|
|
case 'M':
|
|
/* Mark directories with a / */
|
|
if ((gf_markdirs = !(sense & 1)))
|
|
gf_follow = sense & 2;
|
|
break;
|
|
case 'T':
|
|
/* Mark types in a `ls -F' type fashion */
|
|
if ((gf_listtypes = !(sense & 1)))
|
|
gf_follow = sense & 2;
|
|
break;
|
|
case 'N':
|
|
/* Nullglob: remove unmatched patterns. */
|
|
gf_nullglob = !(sense & 1);
|
|
break;
|
|
case 'D':
|
|
/* Glob dots: match leading dots implicitly */
|
|
gf_noglobdots = sense & 1;
|
|
break;
|
|
case 'n':
|
|
/* Numeric glob sort */
|
|
gf_numsort = !(sense & 1);
|
|
break;
|
|
case 'Y':
|
|
{
|
|
/* Short circuit: limit number of matches */
|
|
const char *s_saved = s;
|
|
shortcircuit = !(sense & 1);
|
|
if (shortcircuit) {
|
|
/* Parse the argument. */
|
|
data = qgetnum(&s);
|
|
if ((shortcircuit = data) != data) {
|
|
/* Integer overflow */
|
|
zerr("value too big: Y%s", s_saved);
|
|
restore_globstate(saved);
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case 'a':
|
|
/* Access time in given range */
|
|
g_amc = 0;
|
|
func = qualtime;
|
|
goto getrange;
|
|
case 'm':
|
|
/* Modification time in given range */
|
|
g_amc = 1;
|
|
func = qualtime;
|
|
goto getrange;
|
|
case 'c':
|
|
/* Inode creation time in given range */
|
|
g_amc = 2;
|
|
func = qualtime;
|
|
goto getrange;
|
|
case 'L':
|
|
/* File size (Length) in given range */
|
|
func = qualsize;
|
|
g_amc = -1;
|
|
/* Get size multiplier */
|
|
g_units = TT_BYTES;
|
|
if (*s == 'p' || *s == 'P')
|
|
g_units = TT_POSIX_BLOCKS, ++s;
|
|
else if (*s == 'k' || *s == 'K')
|
|
g_units = TT_KILOBYTES, ++s;
|
|
else if (*s == 'm' || *s == 'M')
|
|
g_units = TT_MEGABYTES, ++s;
|
|
#if defined(ZSH_64_BIT_TYPE) || defined(LONG_IS_64_BIT)
|
|
else if (*s == 'g' || *s == 'G')
|
|
g_units = TT_GIGABYTES, ++s;
|
|
else if (*s == 't' || *s == 'T')
|
|
g_units = TT_TERABYTES, ++s;
|
|
#endif
|
|
getrange:
|
|
/* Get time multiplier */
|
|
if (g_amc >= 0) {
|
|
g_units = TT_DAYS;
|
|
if (*s == 'h')
|
|
g_units = TT_HOURS, ++s;
|
|
else if (*s == 'm')
|
|
g_units = TT_MINS, ++s;
|
|
else if (*s == 'w')
|
|
g_units = TT_WEEKS, ++s;
|
|
else if (*s == 'M')
|
|
g_units = TT_MONTHS, ++s;
|
|
else if (*s == 's')
|
|
g_units = TT_SECONDS, ++s;
|
|
else if (*s == 'd')
|
|
++s;
|
|
}
|
|
/* See if it's greater than, equal to, or less than */
|
|
if ((g_range = *s == '+' ? 1 : *s == '-' ? -1 : 0))
|
|
++s;
|
|
data = qgetnum(&s);
|
|
break;
|
|
|
|
case 'o':
|
|
case 'O':
|
|
{
|
|
int t;
|
|
char *send;
|
|
|
|
if (gf_nsorts == MAX_SORTS) {
|
|
zerr("too many glob sort specifiers");
|
|
restore_globstate(saved);
|
|
return;
|
|
}
|
|
|
|
/* usually just one character */
|
|
send = s+1;
|
|
switch (*s) {
|
|
case 'n': t = GS_NAME; break;
|
|
case 'L': t = GS_SIZE; break;
|
|
case 'l': t = GS_LINKS; break;
|
|
case 'a': t = GS_ATIME; break;
|
|
case 'm': t = GS_MTIME; break;
|
|
case 'c': t = GS_CTIME; break;
|
|
case 'd': t = GS_DEPTH; break;
|
|
case 'N': t = GS_NONE; break;
|
|
case 'e':
|
|
case '+':
|
|
{
|
|
t = GS_EXEC;
|
|
if ((gf_sortlist[gf_nsorts].exec =
|
|
glob_exec_string(&send)) == NULL)
|
|
{
|
|
restore_globstate(saved);
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
zerr("unknown sort specifier");
|
|
restore_globstate(saved);
|
|
return;
|
|
}
|
|
if ((sense & 2) &&
|
|
(t & (GS_SIZE|GS_ATIME|GS_MTIME|GS_CTIME|GS_LINKS)))
|
|
t <<= GS_SHIFT; /* HERE: GS_EXEC? */
|
|
if (t != GS_EXEC) {
|
|
if (gf_sorts & t) {
|
|
zerr("doubled sort specifier");
|
|
restore_globstate(saved);
|
|
return;
|
|
}
|
|
}
|
|
gf_sorts |= t;
|
|
gf_sortlist[gf_nsorts++].tp = t |
|
|
(((sense & 1) ^ (s[-1] == 'O')) ? GS_DESC : 0);
|
|
s = send;
|
|
break;
|
|
}
|
|
case '+':
|
|
case 'e':
|
|
{
|
|
char *tt;
|
|
|
|
tt = glob_exec_string(&s);
|
|
|
|
if (tt == NULL) {
|
|
data = 0;
|
|
} else {
|
|
func = qualsheval;
|
|
sdata = tt;
|
|
}
|
|
break;
|
|
}
|
|
case '[':
|
|
case Inbrack:
|
|
{
|
|
char *os = --s;
|
|
struct value v;
|
|
|
|
v.isarr = SCANPM_WANTVALS;
|
|
v.pm = NULL;
|
|
v.end = -1;
|
|
v.flags = 0;
|
|
if (getindex(&s, &v, 0) || s == os) {
|
|
zerr("invalid subscript");
|
|
restore_globstate(saved);
|
|
return;
|
|
}
|
|
first = v.start;
|
|
end = v.end;
|
|
break;
|
|
}
|
|
case 'P':
|
|
{
|
|
char *tt;
|
|
tt = glob_exec_string(&s);
|
|
|
|
if (tt != NULL)
|
|
{
|
|
LinkList *words = sense & 1 ? &gf_post_words : &gf_pre_words;
|
|
if (!*words)
|
|
*words = newlinklist();
|
|
addlinknode(*words, tt);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
untokenize(--s);
|
|
zerr("unknown file attribute: %c", *s);
|
|
restore_globstate(saved);
|
|
return;
|
|
}
|
|
}
|
|
if (func) {
|
|
/* Requested test is performed by function func */
|
|
if (!qn)
|
|
qn = (struct qual *)hcalloc(sizeof *qn);
|
|
if (ql)
|
|
ql->next = qn;
|
|
ql = qn;
|
|
if (!newquals)
|
|
newquals = qo = qn;
|
|
qn->func = func;
|
|
qn->sense = sense;
|
|
qn->data = data;
|
|
qn->sdata = sdata;
|
|
qn->range = g_range;
|
|
qn->units = g_units;
|
|
qn->amc = g_amc;
|
|
|
|
qn = NULL;
|
|
qualct++;
|
|
}
|
|
if (errflag) {
|
|
restore_globstate(saved);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (quals && newquals) {
|
|
/* Merge previous group of qualifiers with new set. */
|
|
if (quals->or || newquals->or) {
|
|
/* The hard case. */
|
|
struct qual *qorhead = NULL, *qortail = NULL;
|
|
/*
|
|
* Distribute in the most trivial way, by creating
|
|
* all possible combinations of the two sets and chaining
|
|
* these into one long set of alternatives given
|
|
* by qorhead and qortail.
|
|
*/
|
|
for (qn = newquals; qn; qn = qn->or) {
|
|
for (qo = quals; qo; qo = qo->or) {
|
|
struct qual *qfirst, *qlast;
|
|
int islast = !qn->or && !qo->or;
|
|
/* Generate first set of qualifiers... */
|
|
if (islast) {
|
|
/* Last time round: don't bother copying. */
|
|
qfirst = qn;
|
|
for (qlast = qfirst; qlast->next;
|
|
qlast = qlast->next)
|
|
;
|
|
} else
|
|
qfirst = dup_qual_list(qn, &qlast);
|
|
/* ... link into new `or' chain ... */
|
|
if (!qorhead)
|
|
qorhead = qfirst;
|
|
if (qortail)
|
|
qortail->or = qfirst;
|
|
qortail = qfirst;
|
|
/* ... and concatenate second set. */
|
|
qlast->next = islast ? qo : dup_qual_list(qo, NULL);
|
|
}
|
|
}
|
|
quals = qorhead;
|
|
} else {
|
|
/*
|
|
* Easy: we can just chain the qualifiers together.
|
|
* This is an optimisation; the code above will work, too.
|
|
* We retain the original left to right ordering --- remember
|
|
* we are searching for sets of qualifiers from the right.
|
|
*/
|
|
qn = newquals;
|
|
for ( ; newquals->next; newquals = newquals->next)
|
|
;
|
|
newquals->next = quals;
|
|
quals = qn;
|
|
}
|
|
} else if (newquals)
|
|
quals = newquals;
|
|
}
|
|
q = parsepat(str);
|
|
if (!q || errflag) { /* if parsing failed */
|
|
restore_globstate(saved);
|
|
if (unset(BADPATTERN)) {
|
|
if (!nountok)
|
|
untokenize(ostr);
|
|
insertlinknode(list, node, ostr);
|
|
return;
|
|
}
|
|
errflag &= ~ERRFLAG_ERROR;
|
|
zerr("bad pattern: %s", ostr);
|
|
return;
|
|
}
|
|
if (!gf_nsorts) {
|
|
gf_sortlist[0].tp = gf_sorts = (shortcircuit ? GS_NONE : GS_NAME);
|
|
gf_nsorts = 1;
|
|
}
|
|
/* Initialise receptacle for matched files, *
|
|
* expanded by insert() where necessary. */
|
|
matchptr = matchbuf = (Gmatch)zalloc((matchsz = 16) *
|
|
sizeof(struct gmatch));
|
|
matchct = 0;
|
|
pattrystart();
|
|
|
|
/* The actual processing takes place here: matches go into *
|
|
* matchbuf. This is the only top-level call to scanner(). */
|
|
scanner(q, shortcircuit);
|
|
|
|
/* Deal with failures to match depending on options */
|
|
if (matchct)
|
|
badcshglob |= 2; /* at least one cmd. line expansion O.K. */
|
|
else if (!gf_nullglob) {
|
|
if (isset(CSHNULLGLOB)) {
|
|
badcshglob |= 1; /* at least one cmd. line expansion failed */
|
|
} else if (isset(NOMATCH)) {
|
|
zerr("no matches found: %s", ostr);
|
|
zfree(matchbuf, 0);
|
|
restore_globstate(saved);
|
|
return;
|
|
} else {
|
|
/* treat as an ordinary string */
|
|
untokenize(matchptr->name = dupstring(ostr));
|
|
matchptr++;
|
|
matchct = 1;
|
|
}
|
|
}
|
|
|
|
if (!(gf_sortlist[0].tp & GS_NONE)) {
|
|
/*
|
|
* Get the strings to use for sorting by executing
|
|
* the code chunk. We allow more than one of these.
|
|
*/
|
|
int nexecs = 0;
|
|
struct globsort *sortp;
|
|
struct globsort *lastsortp = gf_sortlist + gf_nsorts;
|
|
|
|
/* First find out if there are any GS_EXECs, counting them. */
|
|
for (sortp = gf_sortlist; sortp < lastsortp; sortp++)
|
|
{
|
|
if (sortp->tp & GS_EXEC)
|
|
nexecs++;
|
|
}
|
|
|
|
if (nexecs) {
|
|
Gmatch tmpptr;
|
|
int iexec = 0;
|
|
|
|
/* Yes; allocate enough space for strings for each */
|
|
for (tmpptr = matchbuf; tmpptr < matchptr; tmpptr++)
|
|
tmpptr->sortstrs = (char **)zhalloc(nexecs*sizeof(char*));
|
|
|
|
/* Loop over each one, incrementing iexec */
|
|
for (sortp = gf_sortlist; sortp < lastsortp; sortp++)
|
|
{
|
|
/* Ignore unless this is a GS_EXEC */
|
|
if (sortp->tp & GS_EXEC) {
|
|
Eprog prog;
|
|
|
|
if ((prog = parse_string(sortp->exec, 0))) {
|
|
int ef = errflag, lv = lastval;
|
|
|
|
/* Parsed OK, execute for each name */
|
|
for (tmpptr = matchbuf; tmpptr < matchptr; tmpptr++) {
|
|
setsparam("REPLY", ztrdup(tmpptr->name));
|
|
execode(prog, 1, 0, "globsort");
|
|
if (!errflag)
|
|
tmpptr->sortstrs[iexec] =
|
|
dupstring(getsparam("REPLY"));
|
|
else
|
|
tmpptr->sortstrs[iexec] = tmpptr->name;
|
|
}
|
|
|
|
/* Retain any user interrupt error status */
|
|
errflag = ef | (errflag & ERRFLAG_INT);
|
|
lastval = lv;
|
|
} else {
|
|
/* Failed, let's be safe */
|
|
for (tmpptr = matchbuf; tmpptr < matchptr; tmpptr++)
|
|
tmpptr->sortstrs[iexec] = tmpptr->name;
|
|
}
|
|
|
|
iexec++;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Sort arguments in to lexical (and possibly numeric) order. *
|
|
* This is reversed to facilitate insertion into the list. */
|
|
qsort((void *) & matchbuf[0], matchct, sizeof(struct gmatch),
|
|
(int (*) _((const void *, const void *)))gmatchcmp);
|
|
}
|
|
|
|
if (first < 0) {
|
|
first += matchct;
|
|
if (first < 0)
|
|
first = 0;
|
|
}
|
|
if (end < 0)
|
|
end += matchct + 1;
|
|
else if (end > matchct)
|
|
end = matchct;
|
|
if ((end -= first) > 0) {
|
|
if (gf_sortlist[0].tp & GS_NONE) {
|
|
/* Match list was never reversed, so insert back to front. */
|
|
matchptr = matchbuf + matchct - first - 1;
|
|
while (end-- > 0) {
|
|
/* insert matches in the arg list */
|
|
insert_glob_match(list, node, matchptr->name);
|
|
matchptr--;
|
|
}
|
|
} else {
|
|
matchptr = matchbuf + matchct - first - end;
|
|
while (end-- > 0) {
|
|
/* insert matches in the arg list */
|
|
insert_glob_match(list, node, matchptr->name);
|
|
matchptr++;
|
|
}
|
|
}
|
|
} else if (!badcshglob && !isset(NOMATCH) && matchct == 1) {
|
|
insert_glob_match(list, node, (--matchptr)->name);
|
|
}
|
|
zfree(matchbuf, 0);
|
|
|
|
restore_globstate(saved);
|
|
}
|
|
|
|
/* Return the trailing character for marking file types */
|
|
|
|
/**/
|
|
mod_export char
|
|
file_type(mode_t filemode)
|
|
{
|
|
if(S_ISBLK(filemode))
|
|
return '#';
|
|
else if(S_ISCHR(filemode))
|
|
return '%';
|
|
else if(S_ISDIR(filemode))
|
|
return '/';
|
|
else if(S_ISFIFO(filemode))
|
|
return '|';
|
|
else if(S_ISLNK(filemode))
|
|
return '@';
|
|
else if(S_ISREG(filemode))
|
|
return (filemode & S_IXUGO) ? '*' : ' ';
|
|
else if(S_ISSOCK(filemode))
|
|
return '=';
|
|
else
|
|
return '?';
|
|
}
|
|
|
|
/* check to see if str is eligible for brace expansion */
|
|
|
|
/**/
|
|
mod_export int
|
|
hasbraces(char *str)
|
|
{
|
|
char *lbr, *mbr, *comma;
|
|
|
|
if (isset(BRACECCL)) {
|
|
/* In this case, any properly formed brace expression *
|
|
* will match and expand to the characters in between. */
|
|
int bc, c;
|
|
|
|
for (bc = 0; (c = *str); ++str)
|
|
if (c == Inbrace) {
|
|
if (!bc && str[1] == Outbrace)
|
|
*str++ = '{', *str = '}';
|
|
else
|
|
bc++;
|
|
} else if (c == Outbrace) {
|
|
if (!bc)
|
|
*str = '}';
|
|
else if (!--bc)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
/* Otherwise we need to look for... */
|
|
lbr = mbr = comma = NULL;
|
|
for (;;) {
|
|
switch (*str++) {
|
|
case Inbrace:
|
|
if (!lbr) {
|
|
if (bracechardots(str-1, NULL, NULL))
|
|
return 1;
|
|
lbr = str - 1;
|
|
if (*str == '-')
|
|
str++;
|
|
while (idigit(*str))
|
|
str++;
|
|
if (*str == '.' && str[1] == '.') {
|
|
str++; str++;
|
|
if (*str == '-')
|
|
str++;
|
|
while (idigit(*str))
|
|
str++;
|
|
if (*str == Outbrace &&
|
|
(idigit(lbr[1]) || idigit(str[-1])))
|
|
return 1;
|
|
else if (*str == '.' && str[1] == '.') {
|
|
str++; str++;
|
|
if (*str == '-')
|
|
str++;
|
|
while (idigit(*str))
|
|
str++;
|
|
if (*str == Outbrace &&
|
|
(idigit(lbr[1]) || idigit(str[-1])))
|
|
return 1;
|
|
}
|
|
}
|
|
} else {
|
|
char *s = --str;
|
|
|
|
if (skipparens(Inbrace, Outbrace, &str)) {
|
|
*lbr = *s = '{';
|
|
if (comma)
|
|
str = comma;
|
|
if (mbr && mbr < str)
|
|
str = mbr;
|
|
lbr = mbr = comma = NULL;
|
|
} else if (!mbr)
|
|
mbr = s;
|
|
}
|
|
break;
|
|
case Outbrace:
|
|
if (!lbr)
|
|
str[-1] = '}';
|
|
else if (comma)
|
|
return 1;
|
|
else {
|
|
*lbr = '{';
|
|
str[-1] = '}';
|
|
if (mbr)
|
|
str = mbr;
|
|
mbr = lbr = NULL;
|
|
}
|
|
break;
|
|
case Comma:
|
|
if (!lbr)
|
|
str[-1] = ',';
|
|
else if (!comma)
|
|
comma = str - 1;
|
|
break;
|
|
case '\0':
|
|
if (lbr)
|
|
*lbr = '{';
|
|
if (!mbr && !comma)
|
|
return 0;
|
|
if (comma)
|
|
str = comma;
|
|
if (mbr && mbr < str)
|
|
str = mbr;
|
|
lbr = mbr = comma = NULL;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* expand stuff like >>*.c */
|
|
|
|
/**/
|
|
int
|
|
xpandredir(struct redir *fn, LinkList redirtab)
|
|
{
|
|
char *nam;
|
|
struct redir *ff;
|
|
int ret = 0;
|
|
local_list1(fake);
|
|
|
|
/* Stick the name in a list... */
|
|
init_list1(fake, fn->name);
|
|
/* ...which undergoes all the usual shell expansions */
|
|
prefork(&fake, isset(MULTIOS) ? 0 : PREFORK_SINGLE, NULL);
|
|
/* Globbing is only done for multios. */
|
|
if (!errflag && isset(MULTIOS))
|
|
globlist(&fake, 0);
|
|
if (errflag)
|
|
return 0;
|
|
if (nonempty(&fake) && !nextnode(firstnode(&fake))) {
|
|
/* Just one match, the usual case. */
|
|
char *s = peekfirst(&fake);
|
|
fn->name = s;
|
|
untokenize(s);
|
|
if (fn->type == REDIR_MERGEIN || fn->type == REDIR_MERGEOUT) {
|
|
if (s[0] == '-' && !s[1])
|
|
fn->type = REDIR_CLOSE;
|
|
else if (s[0] == 'p' && !s[1])
|
|
fn->fd2 = -2;
|
|
else {
|
|
while (idigit(*s))
|
|
s++;
|
|
if (!*s && s > fn->name)
|
|
fn->fd2 = zstrtol(fn->name, NULL, 10);
|
|
else if (fn->type == REDIR_MERGEIN)
|
|
zerr("file number expected");
|
|
else
|
|
fn->type = REDIR_ERRWRITE;
|
|
}
|
|
}
|
|
} else if (fn->type == REDIR_MERGEIN)
|
|
zerr("file number expected");
|
|
else {
|
|
if (fn->type == REDIR_MERGEOUT)
|
|
fn->type = REDIR_ERRWRITE;
|
|
while ((nam = (char *)ugetnode(&fake))) {
|
|
/* Loop over matches, duplicating the *
|
|
* redirection for each file found. */
|
|
ff = (struct redir *) zhalloc(sizeof *ff);
|
|
*ff = *fn;
|
|
ff->name = nam;
|
|
addlinknode(redirtab, ff);
|
|
ret = 1;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Check for a brace expansion of the form {<char>..<char>}.
|
|
* On input str must be positioned at an Inbrace, but the sequence
|
|
* of characters beyond that has not necessarily been checked.
|
|
* Return 1 if found else 0.
|
|
*
|
|
* The other parameters are optionaland if the function returns 1 are
|
|
* used to return:
|
|
* - *c1p: the first character in the expansion.
|
|
* - *c2p: the final character in the expansion.
|
|
*/
|
|
|
|
/**/
|
|
static int
|
|
bracechardots(char *str, convchar_t *c1p, convchar_t *c2p)
|
|
{
|
|
convchar_t cstart, cend;
|
|
char *pnext = str + 1, *pconv, convstr[2];
|
|
if (itok(*pnext)) {
|
|
if (*pnext == Inbrace)
|
|
return 0;
|
|
convstr[0] = ztokens[*pnext - Pound];
|
|
convstr[1] = '\0';
|
|
pconv = convstr;
|
|
} else
|
|
pconv = pnext;
|
|
MB_METACHARINIT();
|
|
pnext += MB_METACHARLENCONV(pconv, &cstart);
|
|
if (
|
|
#ifdef MULTIBYTE_SUPPORT
|
|
cstart == WEOF ||
|
|
#else
|
|
!cstart ||
|
|
#endif
|
|
pnext[0] != '.' || pnext[1] != '.')
|
|
return 0;
|
|
pnext += 2;
|
|
if (itok(*pnext)) {
|
|
if (*pnext == Inbrace)
|
|
return 0;
|
|
convstr[0] = ztokens[*pnext - Pound];
|
|
convstr[1] = '\0';
|
|
pconv = convstr;
|
|
} else
|
|
pconv = pnext;
|
|
MB_METACHARINIT();
|
|
pnext += MB_METACHARLENCONV(pconv, &cend);
|
|
if (
|
|
#ifdef MULTIBYTE_SUPPORT
|
|
cend == WEOF ||
|
|
#else
|
|
!cend ||
|
|
#endif
|
|
*pnext != Outbrace)
|
|
return 0;
|
|
if (c1p)
|
|
*c1p = cstart;
|
|
if (c2p)
|
|
*c2p = cend;
|
|
return 1;
|
|
}
|
|
|
|
/* brace expansion */
|
|
|
|
/**/
|
|
mod_export void
|
|
xpandbraces(LinkList list, LinkNode *np)
|
|
{
|
|
LinkNode node = (*np), last = prevnode(node);
|
|
char *str = (char *)getdata(node), *str3 = str, *str2;
|
|
int prev, bc, comma, dotdot;
|
|
|
|
for (; *str != Inbrace; str++);
|
|
/* First, match up braces and see what we have. */
|
|
for (str2 = str, bc = comma = dotdot = 0; *str2; ++str2)
|
|
if (*str2 == Inbrace)
|
|
++bc;
|
|
else if (*str2 == Outbrace) {
|
|
if (--bc == 0)
|
|
break;
|
|
} else if (bc == 1) {
|
|
if (*str2 == Comma)
|
|
++comma; /* we have {foo,bar} */
|
|
else if (*str2 == '.' && str2[1] == '.') {
|
|
dotdot++; /* we have {num1..num2} */
|
|
++str2;
|
|
}
|
|
}
|
|
DPUTS(bc, "BUG: unmatched brace in xpandbraces()");
|
|
if (!comma && dotdot) {
|
|
/* Expand range like 0..10 numerically: comma or recursive
|
|
brace expansion take precedence. */
|
|
char *dots, *p, *dots2 = NULL;
|
|
LinkNode olast = last;
|
|
/* Get the first number of the range */
|
|
zlong rstart, rend;
|
|
int err = 0, rev = 0, rincr = 1;
|
|
int wid1, wid2, wid3, strp;
|
|
convchar_t cstart, cend;
|
|
|
|
if (bracechardots(str, &cstart, &cend)) {
|
|
int lenalloc;
|
|
/*
|
|
* This is a character range.
|
|
*/
|
|
if (cend < cstart) {
|
|
convchar_t ctmp = cend;
|
|
cend = cstart;
|
|
cstart = ctmp;
|
|
rev = 1;
|
|
}
|
|
uremnode(list, node);
|
|
strp = str - str3;
|
|
lenalloc = strp + strlen(str2+1) + 1;
|
|
do {
|
|
#ifdef MULTIBYTE_SUPPORT
|
|
char *ncptr;
|
|
int nclen;
|
|
mb_charinit();
|
|
ncptr = wcs_nicechar(cend, NULL, NULL);
|
|
nclen = strlen(ncptr);
|
|
p = zhalloc(lenalloc + nclen);
|
|
memcpy(p, str3, strp);
|
|
memcpy(p + strp, ncptr, nclen);
|
|
strcpy(p + strp + nclen, str2 + 1);
|
|
#else
|
|
p = zhalloc(lenalloc + 1);
|
|
memcpy(p, str3, strp);
|
|
sprintf(p + strp, "%c", cend);
|
|
strcat(p + strp, str2 + 1);
|
|
#endif
|
|
insertlinknode(list, last, p);
|
|
if (rev) /* decreasing: add in reverse order. */
|
|
last = nextnode(last);
|
|
} while (cend-- > cstart);
|
|
*np = nextnode(olast);
|
|
return;
|
|
}
|
|
|
|
/* Get the first number of the range */
|
|
rstart = zstrtol(str+1,&dots,10);
|
|
rend = 0;
|
|
wid1 = (dots - str) - 1;
|
|
wid2 = (str2 - dots) - 2;
|
|
wid3 = 0;
|
|
strp = str - str3;
|
|
|
|
if (dots == str + 1 || *dots != '.' || dots[1] != '.')
|
|
err++;
|
|
else {
|
|
/* Get the last number of the range */
|
|
rend = zstrtol(dots+2,&p,10);
|
|
if (p == dots+2)
|
|
err++;
|
|
/* check for {num1..num2..incr} */
|
|
if (p != str2) {
|
|
wid2 = (p - dots) - 2;
|
|
dots2 = p;
|
|
if (dotdot == 2 && *p == '.' && p[1] == '.') {
|
|
rincr = zstrtol(p+2, &p, 10);
|
|
wid3 = p - dots2 - 2;
|
|
if (p != str2 || !rincr)
|
|
err++;
|
|
} else
|
|
err++;
|
|
}
|
|
}
|
|
if (!err) {
|
|
/* If either no. begins with a zero, pad the output with *
|
|
* zeroes. Otherwise, set min width to 0 to suppress them.
|
|
* str+1 is the first number in the range, dots+2 the last,
|
|
* and dots2+2 is the increment if that's given. */
|
|
/* TODO: sorry about this */
|
|
int minw = (str[1] == '0' || (str[1] == '-' && str[2] == '0'))
|
|
? wid1
|
|
: (dots[2] == '0' || (dots[2] == '-' && dots[3] == '0'))
|
|
? wid2
|
|
: (dots2 && (dots2[2] == '0' ||
|
|
(dots2[2] == '-' && dots2[3] == '0')))
|
|
? wid3
|
|
: 0;
|
|
if (rincr < 0) {
|
|
/* Handle negative increment */
|
|
rincr = -rincr;
|
|
rev = !rev;
|
|
}
|
|
if (rstart > rend) {
|
|
/* Handle decreasing ranges correctly. */
|
|
zlong rt = rend;
|
|
rend = rstart;
|
|
rstart = rt;
|
|
rev = !rev;
|
|
} else if (rincr > 1) {
|
|
/* when incr > 1, range is aligned to the highest number of str1,
|
|
* compensate for this so that it is aligned to the first number */
|
|
rend -= (rend - rstart) % rincr;
|
|
}
|
|
uremnode(list, node);
|
|
for (; rend >= rstart; rend -= rincr) {
|
|
/* Node added in at end, so do highest first */
|
|
p = dupstring(str3);
|
|
#if defined(ZLONG_IS_LONG_LONG) && defined(PRINTF_HAS_LLD)
|
|
sprintf(p + strp, "%0*lld", minw, rend);
|
|
#else
|
|
sprintf(p + strp, "%0*ld", minw, (long)rend);
|
|
#endif
|
|
strcat(p + strp, str2 + 1);
|
|
insertlinknode(list, last, p);
|
|
if (rev) /* decreasing: add in reverse order. */
|
|
last = nextnode(last);
|
|
}
|
|
*np = nextnode(olast);
|
|
return;
|
|
}
|
|
}
|
|
if (!comma && isset(BRACECCL)) { /* {a-mnop} */
|
|
/* Here we expand each character to a separate node, *
|
|
* but also ranges of characters like a-m. ccl is a *
|
|
* set of flags saying whether each character is present; *
|
|
* the final list is in lexical order. */
|
|
char ccl[256], *p;
|
|
unsigned char c1, c2;
|
|
unsigned int len, pl;
|
|
int lastch = -1;
|
|
|
|
uremnode(list, node);
|
|
memset(ccl, 0, sizeof(ccl) / sizeof(ccl[0]));
|
|
for (p = str + 1; p < str2;) {
|
|
if (itok(c1 = *p++))
|
|
c1 = ztokens[c1 - STOUC(Pound)];
|
|
if ((char) c1 == Meta)
|
|
c1 = 32 ^ *p++;
|
|
if (itok(c2 = *p))
|
|
c2 = ztokens[c2 - STOUC(Pound)];
|
|
if ((char) c2 == Meta)
|
|
c2 = 32 ^ p[1];
|
|
if (c1 == '-' && lastch >= 0 && p < str2 && lastch <= (int)c2) {
|
|
while (lastch < (int)c2)
|
|
ccl[lastch++] = 1;
|
|
lastch = -1;
|
|
} else
|
|
ccl[lastch = c1] = 1;
|
|
}
|
|
pl = str - str3;
|
|
len = pl + strlen(++str2) + 2;
|
|
for (p = ccl + 256; p-- > ccl;)
|
|
if (*p) {
|
|
c1 = p - ccl;
|
|
if (imeta(c1)) {
|
|
str = hcalloc(len + 1);
|
|
str[pl] = Meta;
|
|
str[pl+1] = c1 ^ 32;
|
|
strcpy(str + pl + 2, str2);
|
|
} else {
|
|
str = hcalloc(len);
|
|
str[pl] = c1;
|
|
strcpy(str + pl + 1, str2);
|
|
}
|
|
memcpy(str, str3, pl);
|
|
insertlinknode(list, last, str);
|
|
}
|
|
*np = nextnode(last);
|
|
return;
|
|
}
|
|
prev = str++ - str3;
|
|
str2++;
|
|
uremnode(list, node);
|
|
node = last;
|
|
/* Finally, normal comma expansion *
|
|
* str1{foo,bar}str2 -> str1foostr2 str1barstr2. *
|
|
* Any number of intervening commas is allowed. */
|
|
for (;;) {
|
|
char *zz, *str4;
|
|
int cnt;
|
|
|
|
for (str4 = str, cnt = 0; cnt || (*str != Comma && *str !=
|
|
Outbrace); str++) {
|
|
if (*str == Inbrace)
|
|
cnt++;
|
|
else if (*str == Outbrace)
|
|
cnt--;
|
|
DPUTS(!*str, "BUG: illegal brace expansion");
|
|
}
|
|
/* Concatenate the string before the braces (str3), the section *
|
|
* just found (str4) and the text after the braces (str2) */
|
|
zz = (char *) hcalloc(prev + (str - str4) + strlen(str2) + 1);
|
|
ztrncpy(zz, str3, prev);
|
|
strncat(zz, str4, str - str4);
|
|
strcat(zz, str2);
|
|
/* and add this text to the argument list. */
|
|
insertlinknode(list, node, zz);
|
|
incnode(node);
|
|
if (*str != Outbrace)
|
|
str++;
|
|
else
|
|
break;
|
|
}
|
|
*np = nextnode(last);
|
|
}
|
|
|
|
/* check to see if a matches b (b is not a filename pattern) */
|
|
|
|
/**/
|
|
int
|
|
matchpat(char *a, char *b)
|
|
{
|
|
Patprog p = patcompile(b, PAT_STATIC, NULL);
|
|
|
|
if (!p) {
|
|
zerr("bad pattern: %s", b);
|
|
return 0;
|
|
}
|
|
return pattry(p, a);
|
|
}
|
|
|
|
/* do the ${foo%%bar}, ${foo#bar} stuff */
|
|
/* please do not laugh at this code. */
|
|
|
|
/* Having found a match in getmatch, decide what part of string
|
|
* to return. The matched part starts b characters into string imd->ustr
|
|
* and finishes e characters in: 0 <= b <= e <= imd->ulen on input
|
|
* (yes, empty matches should work).
|
|
*
|
|
* imd->flags is a set of the SUB_* matches defined in zsh.h from
|
|
* SUB_MATCH onwards; the lower parts are ignored.
|
|
*
|
|
* imd->replstr is the replacement string for a substitution
|
|
*
|
|
* imd->replstr is metafied and the values put in imd->repllist are metafied.
|
|
*/
|
|
|
|
/**/
|
|
static char *
|
|
get_match_ret(Imatchdata imd, int b, int e)
|
|
{
|
|
char buf[80], *r, *p, *rr, *replstr = imd->replstr;
|
|
int ll = 0, bl = 0, t = 0, add = 0, fl = imd->flags, i;
|
|
|
|
/* Account for b and e referring to unmetafied string */
|
|
for (p = imd->ustr; p < imd->ustr + b; p++)
|
|
if (imeta(*p))
|
|
add++;
|
|
b += add;
|
|
for (; p < imd->ustr + e; p++)
|
|
if (imeta(*p))
|
|
add++;
|
|
e += add;
|
|
|
|
/* Everything now refers to metafied lengths. */
|
|
if (replstr || (fl & SUB_LIST)) {
|
|
if (fl & SUB_DOSUBST) {
|
|
replstr = dupstring(replstr);
|
|
singsub(&replstr);
|
|
untokenize(replstr);
|
|
}
|
|
if ((fl & (SUB_GLOBAL|SUB_LIST)) && imd->repllist) {
|
|
/* We are replacing the chunk, just add this to the list */
|
|
Repldata rd = (Repldata)
|
|
((fl & SUB_LIST) ? zalloc(sizeof(*rd)) : zhalloc(sizeof(*rd)));
|
|
rd->b = b;
|
|
rd->e = e;
|
|
rd->replstr = replstr;
|
|
if (fl & SUB_LIST)
|
|
zaddlinknode(imd->repllist, rd);
|
|
else
|
|
addlinknode(imd->repllist, rd);
|
|
return imd->mstr;
|
|
}
|
|
ll += strlen(replstr);
|
|
}
|
|
if (fl & SUB_MATCH) /* matched portion */
|
|
ll += 1 + (e - b);
|
|
if (fl & SUB_REST) /* unmatched portion */
|
|
ll += 1 + (imd->mlen - (e - b));
|
|
if (fl & SUB_BIND) {
|
|
/* position of start of matched portion */
|
|
sprintf(buf, "%d ", MB_METASTRLEN2END(imd->mstr, 0, imd->mstr+b) + 1);
|
|
ll += (bl = strlen(buf));
|
|
}
|
|
if (fl & SUB_EIND) {
|
|
/* position of end of matched portion */
|
|
sprintf(buf + bl, "%d ",
|
|
MB_METASTRLEN2END(imd->mstr, 0, imd->mstr+e) + 1);
|
|
ll += (bl = strlen(buf));
|
|
}
|
|
if (fl & SUB_LEN) {
|
|
/* length of matched portion */
|
|
sprintf(buf + bl, "%d ", MB_METASTRLEN2END(imd->mstr+b, 0,
|
|
imd->mstr+e));
|
|
ll += (bl = strlen(buf));
|
|
}
|
|
if (bl)
|
|
buf[bl - 1] = '\0';
|
|
|
|
rr = r = (char *) hcalloc(ll);
|
|
|
|
if (fl & SUB_MATCH) {
|
|
/* copy matched portion to new buffer */
|
|
for (i = b, p = imd->mstr + b; i < e; i++)
|
|
*rr++ = *p++;
|
|
t = 1;
|
|
}
|
|
if (fl & SUB_REST) {
|
|
/* Copy unmatched portion to buffer. If both portions *
|
|
* requested, put a space in between (why?) */
|
|
if (t)
|
|
*rr++ = ' ';
|
|
/* there may be unmatched bits at both beginning and end of string */
|
|
for (i = 0, p = imd->mstr; i < b; i++)
|
|
*rr++ = *p++;
|
|
if (replstr)
|
|
for (p = replstr; *p; )
|
|
*rr++ = *p++;
|
|
for (i = e, p = imd->mstr + e; i < imd->mlen; i++)
|
|
*rr++ = *p++;
|
|
t = 1;
|
|
}
|
|
*rr = '\0';
|
|
if (bl) {
|
|
/* if there was a buffer (with a numeric result), add it; *
|
|
* if there was other stuff too, stick in a space first. */
|
|
if (t)
|
|
*rr++ = ' ';
|
|
strcpy(rr, buf);
|
|
}
|
|
return r;
|
|
}
|
|
|
|
static Patprog
|
|
compgetmatch(char *pat, int *flp, char **replstrp)
|
|
{
|
|
Patprog p;
|
|
/*
|
|
* Flags to pattern compiler: use static buffer since we only
|
|
* have one pattern at a time; we will try the must-match test ourselves,
|
|
* so tell the pattern compiler we are scanning.
|
|
*/
|
|
|
|
/* int patflags = PAT_STATIC|PAT_SCAN|PAT_NOANCH;*/
|
|
|
|
/* Unfortunately, PAT_STATIC doesn't work if we have a replstr with
|
|
* something like ${x#...} in it which will be singsub()ed below because
|
|
* that would overwrite the pattern buffer. */
|
|
|
|
int patflags = PAT_SCAN|PAT_NOANCH | (*replstrp ? 0 : PAT_STATIC);
|
|
|
|
/*
|
|
* Search is anchored to the end of the string if we want to match
|
|
* it all, or if we are matching at the end of the string and not
|
|
* using substrings.
|
|
*/
|
|
if ((*flp & SUB_ALL) || ((*flp & SUB_END) && !(*flp & SUB_SUBSTR)))
|
|
patflags &= ~PAT_NOANCH;
|
|
p = patcompile(pat, patflags, NULL);
|
|
if (!p) {
|
|
zerr("bad pattern: %s", pat);
|
|
return NULL;
|
|
}
|
|
if (*replstrp) {
|
|
if (p->patnpar || (p->globend & GF_MATCHREF)) {
|
|
/*
|
|
* Either backreferences or match references, so we
|
|
* need to re-substitute replstr each time round.
|
|
*/
|
|
*flp |= SUB_DOSUBST;
|
|
} else {
|
|
singsub(replstrp);
|
|
untokenize(*replstrp);
|
|
}
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* This is called from paramsubst to get the match for ${foo#bar} etc.
|
|
* fl is a set of the SUB_* flags defined in zsh.h
|
|
* *sp points to the string we have to modify. The n'th match will be
|
|
* returned in *sp. The heap is used to get memory for the result string.
|
|
* replstr is the replacement string from a ${.../orig/repl}, in
|
|
* which case pat is the original.
|
|
*
|
|
* n is now ignored unless we are looking for a substring, in
|
|
* which case the n'th match from the start is counted such that
|
|
* there is no more than one match from each position.
|
|
*/
|
|
|
|
/**/
|
|
int
|
|
getmatch(char **sp, char *pat, int fl, int n, char *replstr)
|
|
{
|
|
Patprog p;
|
|
|
|
if (!(p = compgetmatch(pat, &fl, &replstr)))
|
|
return 1;
|
|
|
|
return igetmatch(sp, p, fl, n, replstr, NULL);
|
|
}
|
|
|
|
/*
|
|
* This is the corresponding function for array variables.
|
|
* Matching is done with the same pattern on each element.
|
|
*/
|
|
|
|
/**/
|
|
void
|
|
getmatcharr(char ***ap, char *pat, int fl, int n, char *replstr)
|
|
{
|
|
char **arr = *ap, **pp;
|
|
Patprog p;
|
|
|
|
if (!(p = compgetmatch(pat, &fl, &replstr)))
|
|
return;
|
|
|
|
*ap = pp = hcalloc(sizeof(char *) * (arrlen(arr) + 1));
|
|
while ((*pp = *arr++))
|
|
if (igetmatch(pp, p, fl, n, replstr, NULL))
|
|
pp++;
|
|
}
|
|
|
|
/*
|
|
* Match against str using pattern pp; return a list of
|
|
* Repldata matches in the linked list *repllistp; this is
|
|
* in permanent storage and to be freed by freematchlist()
|
|
*/
|
|
|
|
/**/
|
|
mod_export int
|
|
getmatchlist(char *str, Patprog p, LinkList *repllistp)
|
|
{
|
|
char **sp = &str;
|
|
|
|
/*
|
|
* We don't care if we have longest or shortest match, but SUB_LONG
|
|
* is cheaper since the pattern code does that by default.
|
|
* We need SUB_GLOBAL to get all matches.
|
|
* We need SUB_SUBSTR to scan through for substrings.
|
|
* We need SUB_LIST to activate the special handling of the list
|
|
* passed in.
|
|
*/
|
|
return igetmatch(sp, p, SUB_LONG|SUB_GLOBAL|SUB_SUBSTR|SUB_LIST,
|
|
0, NULL, repllistp);
|
|
}
|
|
|
|
static void
|
|
freerepldata(void *ptr)
|
|
{
|
|
zfree(ptr, sizeof(struct repldata));
|
|
}
|
|
|
|
/**/
|
|
mod_export void
|
|
freematchlist(LinkList repllist)
|
|
{
|
|
freelinklist(repllist, freerepldata);
|
|
}
|
|
|
|
/**/
|
|
static void
|
|
set_pat_start(Patprog p, int offs)
|
|
{
|
|
/*
|
|
* If we are messing around with the test string by advancing up
|
|
* it from the start, we need to tell the pattern matcher that
|
|
* a start-of-string assertion, i.e. (#s), should fail. Hence
|
|
* we test whether the offset of the real start of string from
|
|
* the actual start, passed as offs, is zero.
|
|
*/
|
|
if (offs)
|
|
p->flags |= PAT_NOTSTART;
|
|
else
|
|
p->flags &= ~PAT_NOTSTART;
|
|
}
|
|
|
|
/**/
|
|
static void
|
|
set_pat_end(Patprog p, char null_me)
|
|
{
|
|
/*
|
|
* If we are messing around with the string by shortening it at the
|
|
* tail, we need to tell the pattern matcher that an end-of-string
|
|
* assertion, i.e. (#e), should fail. Hence we test whether
|
|
* the character null_me about to be zapped is or is not already a null.
|
|
*/
|
|
if (null_me)
|
|
p->flags |= PAT_NOTEND;
|
|
else
|
|
p->flags &= ~PAT_NOTEND;
|
|
}
|
|
|
|
/**/
|
|
#ifdef MULTIBYTE_SUPPORT
|
|
|
|
/*
|
|
* Increment *tp over character which may be multibyte.
|
|
* Return number of bytes.
|
|
* All unmetafied here.
|
|
*/
|
|
|
|
/**/
|
|
static int iincchar(char **tp, int left)
|
|
{
|
|
char *t = *tp;
|
|
int mbclen = mb_charlenconv(t, left, NULL);
|
|
*tp = t + mbclen;
|
|
|
|
return mbclen;
|
|
}
|
|
|
|
/**/
|
|
static int
|
|
igetmatch(char **sp, Patprog p, int fl, int n, char *replstr,
|
|
LinkList *repllistp)
|
|
{
|
|
char *s = *sp, *t, *tmatch, *send;
|
|
/*
|
|
* Note that ioff counts (possibly multibyte) characters in the
|
|
* character set (Meta's are not included), while l counts characters in
|
|
* the metafied string.
|
|
*
|
|
* umlen is a counter for (unmetafied) byte lengths---neither characters
|
|
* nor raw byte indices; this is simply an optimisation for allocation.
|
|
* umltot is the full length of the string in this scheme.
|
|
*
|
|
* l is the raw string length, used together with any pointers into
|
|
* the string (typically t).
|
|
*/
|
|
int ioff, l = strlen(*sp), matched = 1, umltot = ztrlen(*sp);
|
|
int umlen, nmatches;
|
|
struct patstralloc patstralloc;
|
|
struct imatchdata imd;
|
|
|
|
(void)patallocstr(p, s, l, umltot, 1, &patstralloc);
|
|
s = patstralloc.alloced;
|
|
DPUTS(!s, "forced patallocstr failed");
|
|
send = s + umltot;
|
|
|
|
imd.mstr = *sp;
|
|
imd.mlen = l;
|
|
imd.ustr = s;
|
|
imd.ulen = umltot;
|
|
imd.flags = fl;
|
|
imd.replstr = replstr;
|
|
imd.repllist = NULL;
|
|
|
|
/* perform must-match test for complex closures */
|
|
if (p->mustoff)
|
|
{
|
|
char *muststr = (char *)p + p->mustoff;
|
|
|
|
matched = 0;
|
|
if (p->patmlen <= umltot)
|
|
{
|
|
for (t = s; t <= send - p->patmlen; t++)
|
|
{
|
|
if (!memcmp(muststr, t, p->patmlen)) {
|
|
matched = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* in case we used the prog before... */
|
|
p->flags &= ~(PAT_NOTSTART|PAT_NOTEND);
|
|
|
|
if (fl & SUB_ALL) {
|
|
int i = matched && pattrylen(p, s, umltot, 0, &patstralloc, 0);
|
|
if (!i) {
|
|
/* Perform under no-match conditions */
|
|
umltot = 0;
|
|
imd.replstr = NULL;
|
|
}
|
|
*sp = get_match_ret(&imd, 0, umltot);
|
|
if (! **sp && (((fl & SUB_MATCH) && !i) || ((fl & SUB_REST) && i)))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
if (matched) {
|
|
/*
|
|
* The default behaviour is to match at the start; this
|
|
* is modified by SUB_END and SUB_SUBSTR. SUB_END matches
|
|
* at the end of the string instead of the start. SUB_SUBSTR
|
|
* without SUB_END matches substrings searching from the start;
|
|
* with SUB_END it matches substrings searching from the end.
|
|
*
|
|
* The possibilities are further modified by whether we want the
|
|
* longest (SUB_LONG) or shortest possible match.
|
|
*
|
|
* SUB_START is only used in the case where we are also
|
|
* forcing a match at the end (SUB_END with no SUB_SUBSTR,
|
|
* with or without SUB_LONG), to indicate we should match
|
|
* the entire string.
|
|
*/
|
|
switch (fl & (SUB_END|SUB_LONG|SUB_SUBSTR)) {
|
|
case 0:
|
|
case SUB_LONG:
|
|
/*
|
|
* Largest/smallest possible match at head of string.
|
|
* First get the longest match...
|
|
*/
|
|
if (pattrylen(p, s, umltot, 0, &patstralloc, 0)) {
|
|
/* patmatchlen returns unmetafied length in this case */
|
|
int mlen = patmatchlen();
|
|
if (!(fl & SUB_LONG) && !(p->flags & PAT_PURES)) {
|
|
send = s + mlen;
|
|
/*
|
|
* ... now we know whether it's worth looking for the
|
|
* shortest, which we do by brute force.
|
|
*/
|
|
mb_charinit();
|
|
for (t = s, umlen = 0; t < send; ) {
|
|
set_pat_end(p, *t);
|
|
if (pattrylen(p, s, umlen, 0, &patstralloc, 0)) {
|
|
mlen = patmatchlen();
|
|
break;
|
|
}
|
|
umlen += iincchar(&t, send - t);
|
|
}
|
|
}
|
|
*sp = get_match_ret(&imd, 0, mlen);
|
|
return 1;
|
|
}
|
|
break;
|
|
|
|
case SUB_END:
|
|
/*
|
|
* Smallest possible match at tail of string.
|
|
* As we can only be sure we've got wide characters right
|
|
* when going forwards, we need to match at every point
|
|
* until we fail and record the last successful match.
|
|
*
|
|
* It's important that we return the last successful match
|
|
* so that match, mbegin, mend and MATCH, MBEGIN, MEND are
|
|
* correct.
|
|
*/
|
|
mb_charinit();
|
|
tmatch = NULL;
|
|
for (ioff = 0, t = s, umlen = umltot; t < send; ioff++) {
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, umlen, 0, &patstralloc, ioff))
|
|
tmatch = t;
|
|
if (fl & SUB_START)
|
|
break;
|
|
umlen -= iincchar(&t, send - t);
|
|
}
|
|
if (tmatch) {
|
|
*sp = get_match_ret(&imd, tmatch - s, umltot);
|
|
return 1;
|
|
}
|
|
if (!(fl & SUB_START) && pattrylen(p, s + umltot, 0, 0,
|
|
&patstralloc, ioff)) {
|
|
*sp = get_match_ret(&imd, umltot, umltot);
|
|
return 1;
|
|
}
|
|
break;
|
|
|
|
case (SUB_END|SUB_LONG):
|
|
/* Largest possible match at tail of string: *
|
|
* move forward along string until we get a match. *
|
|
* Again there's no optimisation. */
|
|
mb_charinit();
|
|
for (ioff = 0, t = s, umlen = umltot; t < send ; ioff++) {
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, umlen, 0, &patstralloc, ioff)) {
|
|
*sp = get_match_ret(&imd, t-s, umltot);
|
|
return 1;
|
|
}
|
|
if (fl & SUB_START)
|
|
break;
|
|
umlen -= iincchar(&t, send - t);
|
|
}
|
|
if (!(fl & SUB_START) && pattrylen(p, send, 0, 0,
|
|
&patstralloc, ioff)) {
|
|
*sp = get_match_ret(&imd, umltot, umltot);
|
|
return 1;
|
|
}
|
|
break;
|
|
|
|
case SUB_SUBSTR:
|
|
/* Smallest at start, but matching substrings. */
|
|
set_pat_start(p, l);
|
|
if (!(fl & SUB_GLOBAL) &&
|
|
pattrylen(p, send, 0, 0, &patstralloc, 0) &&
|
|
!--n) {
|
|
*sp = get_match_ret(&imd, 0, 0);
|
|
return 1;
|
|
} /* fall through */
|
|
case (SUB_SUBSTR|SUB_LONG):
|
|
/* longest or smallest at start with substrings */
|
|
t = s;
|
|
if (fl & SUB_GLOBAL) {
|
|
imd.repllist = (fl & SUB_LIST) ? znewlinklist() : newlinklist();
|
|
if (repllistp)
|
|
*repllistp = imd.repllist;
|
|
}
|
|
ioff = 0; /* offset into string */
|
|
umlen = umltot;
|
|
mb_charinit();
|
|
do {
|
|
/* loop over all matches for global substitution */
|
|
matched = 0;
|
|
for (; t < send; ioff++) {
|
|
/* Find the longest match from this position. */
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, umlen, 0, &patstralloc, ioff)) {
|
|
char *mpos = t + patmatchlen();
|
|
if (!(fl & SUB_LONG) && !(p->flags & PAT_PURES)) {
|
|
char *ptr;
|
|
int umlen2;
|
|
/*
|
|
* If searching for the shortest match,
|
|
* start with a zero length and increase
|
|
* it until we reach the longest possible
|
|
* match, accepting the first successful
|
|
* match.
|
|
*/
|
|
for (ptr = t, umlen2 = 0; ptr < mpos;) {
|
|
set_pat_end(p, *ptr);
|
|
if (pattrylen(p, t, umlen2, 0,
|
|
&patstralloc, ioff)) {
|
|
mpos = t + patmatchlen();
|
|
break;
|
|
}
|
|
umlen2 += iincchar(&ptr, mpos - ptr);
|
|
}
|
|
}
|
|
if (!--n || (n <= 0 && (fl & SUB_GLOBAL))) {
|
|
*sp = get_match_ret(&imd, t-s, mpos-s);
|
|
if (mpos == t)
|
|
mpos += mb_charlenconv(mpos, send - mpos, NULL);
|
|
}
|
|
if (!(fl & SUB_GLOBAL)) {
|
|
if (n) {
|
|
/*
|
|
* Looking for a later match: in this case,
|
|
* we can continue looking for matches from
|
|
* the next character, even if it overlaps
|
|
* with what we just found.
|
|
*/
|
|
umlen -= iincchar(&t, send - t);
|
|
continue;
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
/*
|
|
* For a global match, we need to skip the stuff
|
|
* which is already marked for replacement.
|
|
*/
|
|
matched = 1;
|
|
while (t < mpos) {
|
|
ioff++;
|
|
umlen -= iincchar(&t, send - t);
|
|
}
|
|
break;
|
|
}
|
|
umlen -= iincchar(&t, send - t);
|
|
}
|
|
} while (matched);
|
|
/*
|
|
* check if we can match a blank string, if so do it
|
|
* at the start. Goodness knows if this is a good idea
|
|
* with global substitution, so it doesn't happen.
|
|
*/
|
|
set_pat_start(p, l);
|
|
if ((fl & (SUB_LONG|SUB_GLOBAL)) == SUB_LONG &&
|
|
pattrylen(p, send, 0, 0, &patstralloc, 0) && !--n) {
|
|
*sp = get_match_ret(&imd, 0, 0);
|
|
return 1;
|
|
}
|
|
break;
|
|
|
|
case (SUB_END|SUB_SUBSTR):
|
|
case (SUB_END|SUB_LONG|SUB_SUBSTR):
|
|
/* Longest/shortest at end, matching substrings. */
|
|
if (!(fl & SUB_LONG)) {
|
|
set_pat_start(p, l);
|
|
if (pattrylen(p, send, 0, 0, &patstralloc, umltot) &&
|
|
!--n) {
|
|
*sp = get_match_ret(&imd, umltot, umltot);
|
|
return 1;
|
|
}
|
|
}
|
|
/*
|
|
* If multibyte characters are present we need to start from the
|
|
* beginning. This is a bit unpleasant because we can't tell in
|
|
* advance how many times it will match and from where, so if n is
|
|
* greater then 1 we will need to count the number of times it
|
|
* matched and then go through again until we reach the right
|
|
* point. (Either that or record every single match in a list,
|
|
* which isn't stupid; it involves more memory management at this
|
|
* level but less use of the pattern matcher.)
|
|
*/
|
|
nmatches = 0;
|
|
tmatch = NULL;
|
|
mb_charinit();
|
|
for (ioff = 0, t = s, umlen = umltot; t < send; ioff++) {
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, umlen, 0, &patstralloc, ioff)) {
|
|
nmatches++;
|
|
tmatch = t;
|
|
}
|
|
umlen -= iincchar(&t, send - t);
|
|
}
|
|
if (nmatches) {
|
|
char *mpos;
|
|
if (n > 1) {
|
|
/*
|
|
* We need to find the n'th last match.
|
|
*/
|
|
n = nmatches - n;
|
|
mb_charinit();
|
|
for (ioff = 0, t = s, umlen = umltot; t < send; ioff++) {
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, umlen, 0, &patstralloc, ioff) &&
|
|
!n--) {
|
|
tmatch = t;
|
|
break;
|
|
}
|
|
umlen -= iincchar(&t, send - t);
|
|
}
|
|
}
|
|
mpos = tmatch + patmatchlen();
|
|
/* Look for the shortest match if necessary */
|
|
if (!(fl & SUB_LONG) && !(p->flags & PAT_PURES)) {
|
|
for (t = tmatch, umlen = 0; t < mpos; ) {
|
|
set_pat_end(p, *t);
|
|
if (pattrylen(p, tmatch, umlen, 0,
|
|
&patstralloc, ioff)) {
|
|
mpos = tmatch + patmatchlen();
|
|
break;
|
|
}
|
|
umlen += iincchar(&t, mpos - t);
|
|
}
|
|
}
|
|
*sp = get_match_ret(&imd, tmatch-s, mpos-s);
|
|
return 1;
|
|
}
|
|
set_pat_start(p, l);
|
|
if ((fl & SUB_LONG) && pattrylen(p, send, 0, 0,
|
|
&patstralloc, umltot) &&
|
|
!--n) {
|
|
*sp = get_match_ret(&imd, umltot, umltot);
|
|
return 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (imd.repllist && nonempty(imd.repllist)) {
|
|
/* Put all the bits of a global search and replace together. */
|
|
LinkNode nd;
|
|
Repldata rd;
|
|
int lleft;
|
|
char *ptr, *start;
|
|
int i;
|
|
|
|
/*
|
|
* Use metafied string again.
|
|
* Results from get_match_ret in repllist are all metafied.
|
|
*/
|
|
s = *sp;
|
|
if (!(fl & SUB_LIST)) {
|
|
lleft = 0; /* size of returned string */
|
|
i = 0; /* start of last chunk we got from *sp */
|
|
for (nd = firstnode(imd.repllist); nd; incnode(nd)) {
|
|
rd = (Repldata) getdata(nd);
|
|
lleft += rd->b - i; /* previous chunk of *sp */
|
|
lleft += strlen(rd->replstr); /* the replaced bit */
|
|
i = rd->e; /* start of next chunk of *sp */
|
|
}
|
|
lleft += l - i; /* final chunk from *sp */
|
|
start = t = zhalloc(lleft+1);
|
|
i = 0;
|
|
for (nd = firstnode(imd.repllist); nd; incnode(nd)) {
|
|
rd = (Repldata) getdata(nd);
|
|
memcpy(t, s + i, rd->b - i);
|
|
t += rd->b - i;
|
|
ptr = rd->replstr;
|
|
while (*ptr)
|
|
*t++ = *ptr++;
|
|
i = rd->e;
|
|
}
|
|
memcpy(t, s + i, l - i);
|
|
start[lleft] = '\0';
|
|
*sp = (char *)start;
|
|
}
|
|
return 1;
|
|
}
|
|
if (fl & SUB_LIST) { /* safety: don't think this can happen */
|
|
return 0;
|
|
}
|
|
|
|
/* munge the whole string: no match, so no replstr */
|
|
imd.replstr = NULL;
|
|
imd.repllist = NULL;
|
|
*sp = get_match_ret(&imd, 0, 0);
|
|
return (fl & SUB_RETFAIL) ? 0 : 1;
|
|
}
|
|
|
|
/**/
|
|
#else
|
|
|
|
/*
|
|
* Increment pointer which may be on a Meta (x is a pointer variable),
|
|
* returning the incremented value (i.e. like pre-increment).
|
|
*/
|
|
#define METAINC(x) ((x) += (*(x) == Meta) ? 2 : 1)
|
|
|
|
/**/
|
|
static int
|
|
igetmatch(char **sp, Patprog p, int fl, int n, char *replstr,
|
|
LinkList *repllistp)
|
|
{
|
|
char *s = *sp, *t, *send;
|
|
/*
|
|
* Note that ioff and uml count characters in the character
|
|
* set (Meta's are not included), while l counts characters in the
|
|
* metafied string. umlen is a counter for (unmetafied) character
|
|
* lengths.
|
|
*/
|
|
int ioff, l = strlen(*sp), uml = ztrlen(*sp), matched = 1, umlen;
|
|
struct patstralloc patstralloc;
|
|
struct imatchdata imd;
|
|
|
|
(void)patallocstr(p, s, l, uml, 1, &patstralloc);
|
|
s = patstralloc.alloced;
|
|
DPUTS(!s, "forced patallocstr failed");
|
|
send = s + uml;
|
|
|
|
imd.mstr = *sp;
|
|
imd.mlen = l;
|
|
imd.ustr = s;
|
|
imd.ulen = uml;
|
|
imd.flags = fl;
|
|
imd.replstr = replstr;
|
|
imd.repllist = NULL;
|
|
|
|
/* perform must-match test for complex closures */
|
|
if (p->mustoff)
|
|
{
|
|
char *muststr = (char *)p + p->mustoff;
|
|
|
|
matched = 0;
|
|
if (p->patmlen <= uml)
|
|
{
|
|
for (t = s; t <= send - p->patmlen; t++)
|
|
{
|
|
if (!memcmp(muststr, t, p->patmlen)) {
|
|
matched = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* in case we used the prog before... */
|
|
p->flags &= ~(PAT_NOTSTART|PAT_NOTEND);
|
|
|
|
if (fl & SUB_ALL) {
|
|
int i = matched && pattrylen(p, s, uml, 0, &patstralloc, 0);
|
|
if (!i)
|
|
imd.replstr = NULL;
|
|
*sp = get_match_ret(&imd, 0, i ? l : 0);
|
|
if (! **sp && (((fl & SUB_MATCH) && !i) || ((fl & SUB_REST) && i)))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
if (matched) {
|
|
switch (fl & (SUB_END|SUB_LONG|SUB_SUBSTR)) {
|
|
case 0:
|
|
case SUB_LONG:
|
|
/*
|
|
* Largest/smallest possible match at head of string.
|
|
* First get the longest match...
|
|
*/
|
|
if (pattrylen(p, s, uml, 0, &patstralloc, 0)) {
|
|
/* patmatchlen returns metafied length, as we need */
|
|
int mlen = patmatchlen();
|
|
if (!(fl & SUB_LONG) && !(p->flags & PAT_PURES)) {
|
|
send = s + mlen;
|
|
/*
|
|
* ... now we know whether it's worth looking for the
|
|
* shortest, which we do by brute force.
|
|
*/
|
|
for (t = s, umlen = 0; t < s + mlen; METAINC(t), umlen++) {
|
|
set_pat_end(p, *t);
|
|
if (pattrylen(p, s, umlen, 0, &patstralloc, 0)) {
|
|
mlen = patmatchlen();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
*sp = get_match_ret(&imd, 0, mlen);
|
|
return 1;
|
|
}
|
|
break;
|
|
|
|
case SUB_END:
|
|
/* Smallest possible match at tail of string: *
|
|
* move back down string until we get a match. *
|
|
* There's no optimization here. */
|
|
for (ioff = uml, t = send, umlen = 0; t >= s;
|
|
t--, ioff--, umlen++) {
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, umlen, 0, &patstralloc, ioff)) {
|
|
*sp = get_match_ret(&imd, t - s, uml);
|
|
return 1;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case (SUB_END|SUB_LONG):
|
|
/* Largest possible match at tail of string: *
|
|
* move forward along string until we get a match. *
|
|
* Again there's no optimisation. */
|
|
for (ioff = 0, t = s, umlen = uml; t < send;
|
|
ioff++, t++, umlen--) {
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, send - t, umlen, &patstralloc, ioff)) {
|
|
*sp = get_match_ret(&imd, t-s, uml);
|
|
return 1;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case SUB_SUBSTR:
|
|
/* Smallest at start, but matching substrings. */
|
|
set_pat_start(p, l);
|
|
if (!(fl & SUB_GLOBAL) &&
|
|
pattrylen(p, send, 0, 0, &patstralloc, 0) && !--n) {
|
|
*sp = get_match_ret(&imd, 0, 0);
|
|
return 1;
|
|
} /* fall through */
|
|
case (SUB_SUBSTR|SUB_LONG):
|
|
/* longest or smallest at start with substrings */
|
|
t = s;
|
|
if (fl & SUB_GLOBAL) {
|
|
imd.repllist = newlinklist();
|
|
if (repllistp)
|
|
*repllistp = imd.repllist;
|
|
}
|
|
ioff = 0; /* offset into string */
|
|
umlen = uml;
|
|
do {
|
|
/* loop over all matches for global substitution */
|
|
matched = 0;
|
|
for (; t < send; t++, ioff++, umlen--) {
|
|
/* Find the longest match from this position. */
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, send - t, umlen, &patstralloc, ioff)) {
|
|
char *mpos = t + patmatchlen();
|
|
if (!(fl & SUB_LONG) && !(p->flags & PAT_PURES)) {
|
|
char *ptr;
|
|
int umlen2;
|
|
for (ptr = t, umlen2 = 0; ptr < mpos;
|
|
ptr++, umlen2++) {
|
|
set_pat_end(p, *ptr);
|
|
if (pattrylen(p, t, ptr - t, umlen2,
|
|
&patstralloc, ioff)) {
|
|
mpos = t + patmatchlen();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!--n || (n <= 0 && (fl & SUB_GLOBAL))) {
|
|
*sp = get_match_ret(&imd, t-s, mpos-s);
|
|
if (mpos == t)
|
|
mpos++;
|
|
}
|
|
if (!(fl & SUB_GLOBAL)) {
|
|
if (n) {
|
|
/*
|
|
* Looking for a later match: in this case,
|
|
* we can continue looking for matches from
|
|
* the next character, even if it overlaps
|
|
* with what we just found.
|
|
*/
|
|
continue;
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
/*
|
|
* For a global match, we need to skip the stuff
|
|
* which is already marked for replacement.
|
|
*/
|
|
matched = 1;
|
|
while (t < mpos) {
|
|
ioff++;
|
|
umlen--;
|
|
t++;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
} while (matched);
|
|
/*
|
|
* check if we can match a blank string, if so do it
|
|
* at the start. Goodness knows if this is a good idea
|
|
* with global substitution, so it doesn't happen.
|
|
*/
|
|
set_pat_start(p, l);
|
|
if ((fl & (SUB_LONG|SUB_GLOBAL)) == SUB_LONG &&
|
|
pattrylen(p, send, 0, 0, &patstralloc, 0) && !--n) {
|
|
*sp = get_match_ret(&imd, 0, 0);
|
|
return 1;
|
|
}
|
|
break;
|
|
|
|
case (SUB_END|SUB_SUBSTR):
|
|
case (SUB_END|SUB_LONG|SUB_SUBSTR):
|
|
/* Longest/shortest at end, matching substrings. */
|
|
if (!(fl & SUB_LONG)) {
|
|
set_pat_start(p, l);
|
|
if (pattrylen(p, send, 0, 0, &patstralloc, uml) && !--n) {
|
|
*sp = get_match_ret(&imd, uml, uml);
|
|
return 1;
|
|
}
|
|
}
|
|
for (ioff = uml - 1, t = send - 1, umlen = 1; t >= s;
|
|
t--, ioff--, umlen++) {
|
|
set_pat_start(p, t-s);
|
|
if (pattrylen(p, t, send - t, umlen, &patstralloc, ioff) &&
|
|
!--n) {
|
|
/* Found the longest match */
|
|
char *mpos = t + patmatchlen();
|
|
if (!(fl & SUB_LONG) && !(p->flags & PAT_PURES)) {
|
|
char *ptr;
|
|
int umlen2;
|
|
for (ptr = t, umlen2 = 0; ptr < mpos;
|
|
ptr++, umlen2++) {
|
|
set_pat_end(p, *ptr);
|
|
if (pattrylen(p, t, umlen2, 0, &patstralloc,
|
|
ioff)) {
|
|
mpos = t + patmatchlen();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
*sp = get_match_ret(&imd, t-s, mpos-s);
|
|
return 1;
|
|
}
|
|
}
|
|
set_pat_start(p, l);
|
|
if ((fl & SUB_LONG) && pattrylen(p, send, 0, 0,
|
|
&patstralloc, uml) &&
|
|
!--n) {
|
|
*sp = get_match_ret(&imd, uml, uml);
|
|
return 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (imd.repllist && nonempty(imd.repllist)) {
|
|
/* Put all the bits of a global search and replace together. */
|
|
LinkNode nd;
|
|
Repldata rd;
|
|
int lleft = 0; /* size of returned string */
|
|
char *ptr, *start;
|
|
int i;
|
|
|
|
/*
|
|
* Use metafied string again.
|
|
* Results from get_match_ret in repllist are all metafied.
|
|
*/
|
|
s = *sp;
|
|
i = 0; /* start of last chunk we got from *sp */
|
|
for (nd = firstnode(imd.repllist); nd; incnode(nd)) {
|
|
rd = (Repldata) getdata(nd);
|
|
lleft += rd->b - i; /* previous chunk of *sp */
|
|
lleft += strlen(rd->replstr); /* the replaced bit */
|
|
i = rd->e; /* start of next chunk of *sp */
|
|
}
|
|
lleft += l - i; /* final chunk from *sp */
|
|
start = t = zhalloc(lleft+1);
|
|
i = 0;
|
|
for (nd = firstnode(imd.repllist); nd; incnode(nd)) {
|
|
rd = (Repldata) getdata(nd);
|
|
memcpy(t, s + i, rd->b - i);
|
|
t += rd->b - i;
|
|
ptr = rd->replstr;
|
|
while (*ptr)
|
|
*t++ = *ptr++;
|
|
i = rd->e;
|
|
}
|
|
memcpy(t, s + i, l - i);
|
|
start[lleft] = '\0';
|
|
*sp = (char *)start;
|
|
return 1;
|
|
}
|
|
|
|
/* munge the whole string: no match, so no replstr */
|
|
imd.replstr = NULL;
|
|
imd.repllist = NULL;
|
|
*sp = get_match_ret(&imd, 0, 0);
|
|
return 1;
|
|
}
|
|
|
|
/**/
|
|
#endif /* MULTIBYTE_SUPPORT */
|
|
|
|
/* blindly turn a string into a tokenised expression without lexing */
|
|
|
|
/**/
|
|
mod_export void
|
|
tokenize(char *s)
|
|
{
|
|
zshtokenize(s, 0);
|
|
}
|
|
|
|
/*
|
|
* shtokenize is used when we tokenize a string with GLOB_SUBST set.
|
|
* In that case we need to retain backslashes when we turn the
|
|
* pattern back into a string, so that the string is not
|
|
* modified if it failed to match a pattern.
|
|
*
|
|
* It may be modified by the effect of SH_GLOB which turns off
|
|
* various zsh-specific options.
|
|
*/
|
|
|
|
/**/
|
|
mod_export void
|
|
shtokenize(char *s)
|
|
{
|
|
int flags = ZSHTOK_SUBST;
|
|
if (isset(SHGLOB))
|
|
flags |= ZSHTOK_SHGLOB;
|
|
zshtokenize(s, flags);
|
|
}
|
|
|
|
/**/
|
|
static void
|
|
zshtokenize(char *s, int flags)
|
|
{
|
|
char *t;
|
|
int bslash = 0;
|
|
|
|
for (; *s; s++) {
|
|
cont:
|
|
switch (*s) {
|
|
case Bnull:
|
|
case Bnullkeep:
|
|
case '\\':
|
|
if (bslash) {
|
|
s[-1] = (flags & ZSHTOK_SUBST) ? Bnullkeep : Bnull;
|
|
break;
|
|
}
|
|
bslash = 1;
|
|
continue;
|
|
case '<':
|
|
if (flags & ZSHTOK_SHGLOB)
|
|
break;
|
|
if (bslash) {
|
|
s[-1] = (flags & ZSHTOK_SUBST) ? Bnullkeep : Bnull;
|
|
break;
|
|
}
|
|
t = s;
|
|
while (idigit(*++s));
|
|
if (*s != '-')
|
|
goto cont;
|
|
while (idigit(*++s));
|
|
if (*s != '>')
|
|
goto cont;
|
|
*t = Inang;
|
|
*s = Outang;
|
|
break;
|
|
case '(':
|
|
case '|':
|
|
case ')':
|
|
if (flags & ZSHTOK_SHGLOB)
|
|
break;
|
|
case '>':
|
|
case '^':
|
|
case '#':
|
|
case '~':
|
|
case '[':
|
|
case ']':
|
|
case '*':
|
|
case '?':
|
|
case '=':
|
|
for (t = ztokens; *t; t++)
|
|
if (*t == *s) {
|
|
if (bslash)
|
|
s[-1] = (flags & ZSHTOK_SUBST) ? Bnullkeep : Bnull;
|
|
else
|
|
*s = (t - ztokens) + Pound;
|
|
break;
|
|
}
|
|
}
|
|
bslash = 0;
|
|
}
|
|
}
|
|
|
|
/* remove unnecessary Nulargs */
|
|
|
|
/**/
|
|
mod_export void
|
|
remnulargs(char *s)
|
|
{
|
|
if (*s) {
|
|
char *o = s, c;
|
|
|
|
while ((c = *s++))
|
|
if (c == Bnullkeep) {
|
|
/*
|
|
* An active backslash that needs to be turned back into
|
|
* a real backslash for output. However, we don't
|
|
* do that yet since we need to ignore it during
|
|
* pattern matching.
|
|
*/
|
|
continue;
|
|
} else if (inull(c)) {
|
|
char *t = s - 1;
|
|
|
|
while ((c = *s++)) {
|
|
if (c == Bnullkeep)
|
|
*t++ = '\\';
|
|
else if (!inull(c))
|
|
*t++ = c;
|
|
}
|
|
*t = '\0';
|
|
if (!*o) {
|
|
o[0] = Nularg;
|
|
o[1] = '\0';
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* qualifier functions: mostly self-explanatory, see glob(). */
|
|
|
|
/* device number */
|
|
|
|
/**/
|
|
static int
|
|
qualdev(UNUSED(char *name), struct stat *buf, off_t dv, UNUSED(char *dummy))
|
|
{
|
|
return (off_t)buf->st_dev == dv;
|
|
}
|
|
|
|
/* number of hard links to file */
|
|
|
|
/**/
|
|
static int
|
|
qualnlink(UNUSED(char *name), struct stat *buf, off_t ct, UNUSED(char *dummy))
|
|
{
|
|
return (g_range < 0 ? buf->st_nlink < ct :
|
|
g_range > 0 ? buf->st_nlink > ct :
|
|
buf->st_nlink == ct);
|
|
}
|
|
|
|
/* user ID */
|
|
|
|
/**/
|
|
static int
|
|
qualuid(UNUSED(char *name), struct stat *buf, off_t uid, UNUSED(char *dummy))
|
|
{
|
|
return buf->st_uid == uid;
|
|
}
|
|
|
|
/* group ID */
|
|
|
|
/**/
|
|
static int
|
|
qualgid(UNUSED(char *name), struct stat *buf, off_t gid, UNUSED(char *dummy))
|
|
{
|
|
return buf->st_gid == gid;
|
|
}
|
|
|
|
/* device special file? */
|
|
|
|
/**/
|
|
static int
|
|
qualisdev(UNUSED(char *name), struct stat *buf, UNUSED(off_t junk), UNUSED(char *dummy))
|
|
{
|
|
return S_ISBLK(buf->st_mode) || S_ISCHR(buf->st_mode);
|
|
}
|
|
|
|
/* block special file? */
|
|
|
|
/**/
|
|
static int
|
|
qualisblk(UNUSED(char *name), struct stat *buf, UNUSED(off_t junk), UNUSED(char *dummy))
|
|
{
|
|
return S_ISBLK(buf->st_mode);
|
|
}
|
|
|
|
/* character special file? */
|
|
|
|
/**/
|
|
static int
|
|
qualischr(UNUSED(char *name), struct stat *buf, UNUSED(off_t junk), UNUSED(char *dummy))
|
|
{
|
|
return S_ISCHR(buf->st_mode);
|
|
}
|
|
|
|
/* directory? */
|
|
|
|
/**/
|
|
static int
|
|
qualisdir(UNUSED(char *name), struct stat *buf, UNUSED(off_t junk), UNUSED(char *dummy))
|
|
{
|
|
return S_ISDIR(buf->st_mode);
|
|
}
|
|
|
|
/* FIFO? */
|
|
|
|
/**/
|
|
static int
|
|
qualisfifo(UNUSED(char *name), struct stat *buf, UNUSED(off_t junk), UNUSED(char *dummy))
|
|
{
|
|
return S_ISFIFO(buf->st_mode);
|
|
}
|
|
|
|
/* symbolic link? */
|
|
|
|
/**/
|
|
static int
|
|
qualislnk(UNUSED(char *name), struct stat *buf, UNUSED(off_t junk), UNUSED(char *dummy))
|
|
{
|
|
return S_ISLNK(buf->st_mode);
|
|
}
|
|
|
|
/* regular file? */
|
|
|
|
/**/
|
|
static int
|
|
qualisreg(UNUSED(char *name), struct stat *buf, UNUSED(off_t junk), UNUSED(char *dummy))
|
|
{
|
|
return S_ISREG(buf->st_mode);
|
|
}
|
|
|
|
/* socket? */
|
|
|
|
/**/
|
|
static int
|
|
qualissock(UNUSED(char *name), struct stat *buf, UNUSED(off_t junk), UNUSED(char *dummy))
|
|
{
|
|
return S_ISSOCK(buf->st_mode);
|
|
}
|
|
|
|
/* given flag is set in mode */
|
|
|
|
/**/
|
|
static int
|
|
qualflags(UNUSED(char *name), struct stat *buf, off_t mod, UNUSED(char *dummy))
|
|
{
|
|
return mode_to_octal(buf->st_mode) & mod;
|
|
}
|
|
|
|
/* mode matches specification */
|
|
|
|
/**/
|
|
static int
|
|
qualmodeflags(UNUSED(char *name), struct stat *buf, off_t mod, UNUSED(char *dummy))
|
|
{
|
|
long v = mode_to_octal(buf->st_mode), y = mod & 07777, n = mod >> 12;
|
|
|
|
return ((v & y) == y && !(v & n));
|
|
}
|
|
|
|
/* regular executable file? */
|
|
|
|
/**/
|
|
static int
|
|
qualiscom(UNUSED(char *name), struct stat *buf, UNUSED(off_t mod), UNUSED(char *dummy))
|
|
{
|
|
return S_ISREG(buf->st_mode) && (buf->st_mode & S_IXUGO);
|
|
}
|
|
|
|
/* size in required range? */
|
|
|
|
/**/
|
|
static int
|
|
qualsize(UNUSED(char *name), struct stat *buf, off_t size, UNUSED(char *dummy))
|
|
{
|
|
#if defined(ZSH_64_BIT_TYPE) || defined(LONG_IS_64_BIT)
|
|
# define QS_CAST_SIZE()
|
|
zlong scaled = buf->st_size;
|
|
#else
|
|
# define QS_CAST_SIZE() (unsigned long)
|
|
unsigned long scaled = (unsigned long)buf->st_size;
|
|
#endif
|
|
|
|
switch (g_units) {
|
|
case TT_POSIX_BLOCKS:
|
|
scaled += 511l;
|
|
scaled /= 512l;
|
|
break;
|
|
case TT_KILOBYTES:
|
|
scaled += 1023l;
|
|
scaled /= 1024l;
|
|
break;
|
|
case TT_MEGABYTES:
|
|
scaled += 1048575l;
|
|
scaled /= 1048576l;
|
|
break;
|
|
#if defined(ZSH_64_BIT_TYPE) || defined(LONG_IS_64_BIT)
|
|
case TT_GIGABYTES:
|
|
scaled += ZLONG_CONST(1073741823);
|
|
scaled /= ZLONG_CONST(1073741824);
|
|
break;
|
|
case TT_TERABYTES:
|
|
scaled += ZLONG_CONST(1099511627775);
|
|
scaled /= ZLONG_CONST(1099511627776);
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
return (g_range < 0 ? scaled < QS_CAST_SIZE() size :
|
|
g_range > 0 ? scaled > QS_CAST_SIZE() size :
|
|
scaled == QS_CAST_SIZE() size);
|
|
#undef QS_CAST_SIZE
|
|
}
|
|
|
|
/* time in required range? */
|
|
|
|
/**/
|
|
static int
|
|
qualtime(UNUSED(char *name), struct stat *buf, off_t days, UNUSED(char *dummy))
|
|
{
|
|
time_t now, diff;
|
|
|
|
time(&now);
|
|
diff = now - (g_amc == 0 ? buf->st_atime : g_amc == 1 ? buf->st_mtime :
|
|
buf->st_ctime);
|
|
/* handle multipliers indicating units */
|
|
switch (g_units) {
|
|
case TT_DAYS:
|
|
diff /= 86400l;
|
|
break;
|
|
case TT_HOURS:
|
|
diff /= 3600l;
|
|
break;
|
|
case TT_MINS:
|
|
diff /= 60l;
|
|
break;
|
|
case TT_WEEKS:
|
|
diff /= 604800l;
|
|
break;
|
|
case TT_MONTHS:
|
|
diff /= 2592000l;
|
|
break;
|
|
}
|
|
|
|
return (g_range < 0 ? diff < days :
|
|
g_range > 0 ? diff > days :
|
|
diff == days);
|
|
}
|
|
|
|
/* evaluate a string */
|
|
|
|
/**/
|
|
static int
|
|
qualsheval(char *name, UNUSED(struct stat *buf), UNUSED(off_t days), char *str)
|
|
{
|
|
Eprog prog;
|
|
|
|
if ((prog = parse_string(str, 0))) {
|
|
int ef = errflag, lv = lastval, ret;
|
|
|
|
unsetparam("reply");
|
|
setsparam("REPLY", ztrdup(name));
|
|
|
|
execode(prog, 1, 0, "globqual");
|
|
|
|
ret = lastval;
|
|
/* Retain any user interrupt error status */
|
|
errflag = ef | (errflag & ERRFLAG_INT);
|
|
lastval = lv;
|
|
|
|
if (!(inserts = getaparam("reply")) &&
|
|
!(inserts = gethparam("reply"))) {
|
|
char *tmp;
|
|
|
|
if ((tmp = getsparam("reply")) || (tmp = getsparam("REPLY"))) {
|
|
static char *tmparr[2];
|
|
|
|
tmparr[0] = tmp;
|
|
tmparr[1] = NULL;
|
|
|
|
inserts = tmparr;
|
|
}
|
|
}
|
|
|
|
return !ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**/
|
|
static int
|
|
qualnonemptydir(char *name, struct stat *buf, UNUSED(off_t days), UNUSED(char *str))
|
|
{
|
|
DIR *dirh;
|
|
struct dirent *de;
|
|
int unamelen;
|
|
char *uname = unmetafy(dupstring(name), &unamelen);
|
|
|
|
if (!S_ISDIR(buf->st_mode))
|
|
return 0;
|
|
|
|
if (buf->st_nlink > 2)
|
|
return 1;
|
|
|
|
if (!(dirh = opendir(uname)))
|
|
return 0;
|
|
|
|
while ((de = readdir(dirh))) {
|
|
if (strcmp(de->d_name, ".") && strcmp(de->d_name, "..")) {
|
|
closedir(dirh);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
closedir(dirh);
|
|
return 0;
|
|
}
|