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24861 (with tweaks): logic to use alternative wcwidth() if needed;
slightly improve test for overwriting with combining characters.
This commit is contained in:
Peter Stephenson
parent
a58d02fd2e
commit
2cec7aae44
12 changed files with 434 additions and 27 deletions
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@ -1,3 +1,12 @@
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2008-04-22 Peter Stephenson <pws@csr.com>
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* 24861: configure.ac, Src/builtin.c, Src/compat.c, Src/prompt.c,
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Src/utils.c, Src/zsh.h, Src/zle/complist.c, Src/Zle/zle_misc.c
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(slightly rewritten), Src/zle/zle_refresh.c, Src/Zle/zle_tricky.c:
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use alternative wcwidth() if configure suggests the library
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version is returning non-zero when it shouldn't; also improve the
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overwriting test for combining characters.
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2008-04-21 Peter Stephenson <pws@csr.com>
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* 24860: Src/Zle/zle_misc.c, Src/Zle/zle_utils.c: better
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@ -1017,7 +1017,7 @@ compprintfmt(char *fmt, int n, int dopr, int doesc, int ml, int *stop)
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}
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else
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#endif
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width = WCWIDTH(cchar);
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width = WCWIDTH_WINT(cchar);
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if (doesc && cchar == ZWC('%')) {
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p += len;
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@ -1045,6 +1045,7 @@ doisearch(char **args, int dir)
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free(last_line);
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last_line = ztrdup(zt.text);
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sbuf[sbptr] = '\0';
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for (;;) {
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char *t;
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@ -1076,7 +1077,6 @@ doisearch(char **args, int dir)
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* First search for a(nother) match within the
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* current line, unless we've been told to skip it.
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*/
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sbuf[sbptr] = '\0';
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if (!skip_line && ((sbuf[0] == '^') ?
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(t = (zlinecmp(zt.text, sbuf + 1) < sens
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? zt.text : NULL)) :
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@ -59,10 +59,16 @@ doinsert(ZLE_STRING_T zstr, int len)
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* (i.e. even if control, or double width, or with combining
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* characters) is treated as 1 for the purpose of replacing
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* what's there already.
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*
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* This can cause inserting of a combining character in
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* places where it should overwrite, such as the start
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* of a line. However, combining characters aren't
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* useful there anyway and this doesn't cause any
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* particular harm.
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*/
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for (i = 0, count = 0; i < len; i++) {
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int width = wcwidth(zstr[i]);
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count += (width != 0) ? 1 : 0;
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if (!IS_COMBINING(zstr[i]))
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count++;
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}
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/*
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* Ensure we replace a complete combining character
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@ -1222,7 +1222,7 @@ zrefresh(void)
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}
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}
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#ifdef MULTIBYTE_SUPPORT
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else if (iswprint(*t) && (width = wcwidth(*t)) > 0) {
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else if (iswprint(*t) && (width = WCWIDTH(*t)) > 0) {
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int ichars;
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if (width > rpms.sen - rpms.s) {
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int started = 0;
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@ -1397,7 +1397,7 @@ zrefresh(void)
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for (; u < outputline + outll; u++) {
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#ifdef MULTIBYTE_SUPPORT
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if (iswprint(*u)) {
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int width = wcwidth(*u);
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int width = WCWIDTH(*u);
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/* Handle wide characters as above */
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if (width > rpms.sen - rpms.s) {
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do {
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@ -2144,7 +2144,7 @@ tc_rightcurs(int ct)
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characters occupying more than one column. We could flag that
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this has happened (since it's not that common to have characters
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wider than one column), but for now it's easier not to use the
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trick if we are using wcwidth() on the prompt. It's not that
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trick if we are using WCWIDTH() on the prompt. It's not that
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common to be editing in the middle of the prompt anyway, I would
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think.
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*/
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@ -2264,7 +2264,7 @@ singlerefresh(ZLE_STRING_T tmpline, int tmpll, int tmpcs)
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if (tmpline[t0] == ZWC('\t'))
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vsiz = (vsiz | 7) + 2;
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#ifdef MULTIBYTE_SUPPORT
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else if (iswprint(tmpline[t0]) && (width = wcwidth(tmpline[t0]) > 0)) {
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else if (iswprint(tmpline[t0]) && (width = WCWIDTH(tmpline[t0]) > 0)) {
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vsiz += width;
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if (isset(COMBININGCHARS) && IS_BASECHAR(tmpline[t0])) {
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while (t0 < tmpll-1 && IS_COMBINING(tmpline[t0+1]))
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@ -2340,7 +2340,7 @@ singlerefresh(ZLE_STRING_T tmpline, int tmpll, int tmpcs)
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vp++;
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#ifdef MULTIBYTE_SUPPORT
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} else if (iswprint(tmpline[t0]) &&
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(width = wcwidth(tmpline[t0])) > 0) {
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(width = WCWIDTH(tmpline[t0])) > 0) {
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int ichars;
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if (isset(COMBININGCHARS) && IS_BASECHAR(tmpline[t0])) {
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/*
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@ -2375,7 +2375,7 @@ printfmt(char *fmt, int n, int dopr, int doesc)
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}
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} else
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p += clen;
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cc += WCWIDTH(cchar);
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cc += WCWIDTH_WINT(cchar);
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if (dopr && !(cc % columns))
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fputs(" \010", shout);
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}
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@ -3668,7 +3668,7 @@ bin_print(char *name, char **args, Options ops, int func)
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width += l;
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break;
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}
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wcw = wcwidth(wc);
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wcw = WCWIDTH(wc);
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/* treat unprintable as 0 */
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if (wcw > 0)
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width += wcw;
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325
Src/compat.c
325
Src/compat.c
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@ -549,4 +549,327 @@ strtoul(nptr, endptr, base)
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*endptr = any ? s - 1 : nptr;
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return (acc);
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}
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#endif
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#endif /* HAVE_STRTOUL */
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/**/
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#ifdef BROKEN_WCWIDTH
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/*
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* This is an implementation of wcwidth() and wcswidth() (defined in
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* IEEE Std 1002.1-2001) for Unicode.
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*
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* http://www.opengroup.org/onlinepubs/007904975/functions/wcwidth.html
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* http://www.opengroup.org/onlinepubs/007904975/functions/wcswidth.html
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*
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* In fixed-width output devices, Latin characters all occupy a single
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* "cell" position of equal width, whereas ideographic CJK characters
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* occupy two such cells. Interoperability between terminal-line
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* applications and (teletype-style) character terminals using the
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* UTF-8 encoding requires agreement on which character should advance
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* the cursor by how many cell positions. No established formal
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* standards exist at present on which Unicode character shall occupy
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* how many cell positions on character terminals. These routines are
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* a first attempt of defining such behavior based on simple rules
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* applied to data provided by the Unicode Consortium.
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*
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* For some graphical characters, the Unicode standard explicitly
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* defines a character-cell width via the definition of the East Asian
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* FullWidth (F), Wide (W), Half-width (H), and Narrow (Na) classes.
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* In all these cases, there is no ambiguity about which width a
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* terminal shall use. For characters in the East Asian Ambiguous (A)
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* class, the width choice depends purely on a preference of backward
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* compatibility with either historic CJK or Western practice.
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* Choosing single-width for these characters is easy to justify as
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* the appropriate long-term solution, as the CJK practice of
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* displaying these characters as double-width comes from historic
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* implementation simplicity (8-bit encoded characters were displayed
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* single-width and 16-bit ones double-width, even for Greek,
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* Cyrillic, etc.) and not any typographic considerations.
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*
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* Much less clear is the choice of width for the Not East Asian
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* (Neutral) class. Existing practice does not dictate a width for any
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* of these characters. It would nevertheless make sense
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* typographically to allocate two character cells to characters such
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* as for instance EM SPACE or VOLUME INTEGRAL, which cannot be
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* represented adequately with a single-width glyph. The following
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* routines at present merely assign a single-cell width to all
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* neutral characters, in the interest of simplicity. This is not
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* entirely satisfactory and should be reconsidered before
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* establishing a formal standard in this area. At the moment, the
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* decision which Not East Asian (Neutral) characters should be
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* represented by double-width glyphs cannot yet be answered by
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* applying a simple rule from the Unicode database content. Setting
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* up a proper standard for the behavior of UTF-8 character terminals
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* will require a careful analysis not only of each Unicode character,
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* but also of each presentation form, something the author of these
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* routines has avoided to do so far.
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*
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* http://www.unicode.org/unicode/reports/tr11/
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*
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* Markus Kuhn -- 2007-05-26 (Unicode 5.0)
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*
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* Permission to use, copy, modify, and distribute this software
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* for any purpose and without fee is hereby granted. The author
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* disclaims all warranties with regard to this software.
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*
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* Latest version: http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
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*/
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struct interval {
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int first;
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int last;
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};
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/* auxiliary function for binary search in interval table */
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static int bisearch(wchar_t ucs, const struct interval *table, int max) {
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int min = 0;
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int mid;
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if (ucs < table[0].first || ucs > table[max].last)
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return 0;
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while (max >= min) {
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mid = (min + max) / 2;
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if (ucs > table[mid].last)
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min = mid + 1;
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else if (ucs < table[mid].first)
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max = mid - 1;
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else
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return 1;
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}
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return 0;
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}
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/* The following two functions define the column width of an ISO 10646
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* character as follows:
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*
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* - The null character (U+0000) has a column width of 0.
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*
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* - Other C0/C1 control characters and DEL will lead to a return
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* value of -1.
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*
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* - Non-spacing and enclosing combining characters (general
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* category code Mn or Me in the Unicode database) have a
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* column width of 0.
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*
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* - SOFT HYPHEN (U+00AD) has a column width of 1.
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*
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* - Other format characters (general category code Cf in the Unicode
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* database) and ZERO WIDTH SPACE (U+200B) have a column width of 0.
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*
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* - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF)
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* have a column width of 0.
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*
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* - Spacing characters in the East Asian Wide (W) or East Asian
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* Full-width (F) category as defined in Unicode Technical
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* Report #11 have a column width of 2.
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*
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* - All remaining characters (including all printable
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* ISO 8859-1 and WGL4 characters, Unicode control characters,
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* etc.) have a column width of 1.
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*
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* This implementation assumes that wchar_t characters are encoded
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* in ISO 10646.
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*/
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/**/
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int
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mk_wcwidth(wchar_t ucs)
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{
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/* sorted list of non-overlapping intervals of non-spacing characters */
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/* generated by "uniset +cat=Me +cat=Mn +cat=Cf -00AD +1160-11FF +200B c" */
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static const struct interval combining[] = {
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{ 0x0300, 0x036F }, { 0x0483, 0x0486 }, { 0x0488, 0x0489 },
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{ 0x0591, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 },
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{ 0x05C4, 0x05C5 }, { 0x05C7, 0x05C7 }, { 0x0600, 0x0603 },
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{ 0x0610, 0x0615 }, { 0x064B, 0x065E }, { 0x0670, 0x0670 },
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{ 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED },
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{ 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A },
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{ 0x07A6, 0x07B0 }, { 0x07EB, 0x07F3 }, { 0x0901, 0x0902 },
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{ 0x093C, 0x093C }, { 0x0941, 0x0948 }, { 0x094D, 0x094D },
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{ 0x0951, 0x0954 }, { 0x0962, 0x0963 }, { 0x0981, 0x0981 },
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{ 0x09BC, 0x09BC }, { 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD },
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{ 0x09E2, 0x09E3 }, { 0x0A01, 0x0A02 }, { 0x0A3C, 0x0A3C },
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{ 0x0A41, 0x0A42 }, { 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D },
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{ 0x0A70, 0x0A71 }, { 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC },
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{ 0x0AC1, 0x0AC5 }, { 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD },
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{ 0x0AE2, 0x0AE3 }, { 0x0B01, 0x0B01 }, { 0x0B3C, 0x0B3C },
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{ 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, { 0x0B4D, 0x0B4D },
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{ 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, { 0x0BC0, 0x0BC0 },
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{ 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, { 0x0C46, 0x0C48 },
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{ 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, { 0x0CBC, 0x0CBC },
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{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD },
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{ 0x0CE2, 0x0CE3 }, { 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D },
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{ 0x0DCA, 0x0DCA }, { 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 },
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{ 0x0E31, 0x0E31 }, { 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E },
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{ 0x0EB1, 0x0EB1 }, { 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC },
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{ 0x0EC8, 0x0ECD }, { 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 },
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{ 0x0F37, 0x0F37 }, { 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E },
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{ 0x0F80, 0x0F84 }, { 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 },
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{ 0x0F99, 0x0FBC }, { 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 },
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{ 0x1032, 0x1032 }, { 0x1036, 0x1037 }, { 0x1039, 0x1039 },
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{ 0x1058, 0x1059 }, { 0x1160, 0x11FF }, { 0x135F, 0x135F },
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{ 0x1712, 0x1714 }, { 0x1732, 0x1734 }, { 0x1752, 0x1753 },
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{ 0x1772, 0x1773 }, { 0x17B4, 0x17B5 }, { 0x17B7, 0x17BD },
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{ 0x17C6, 0x17C6 }, { 0x17C9, 0x17D3 }, { 0x17DD, 0x17DD },
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{ 0x180B, 0x180D }, { 0x18A9, 0x18A9 }, { 0x1920, 0x1922 },
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{ 0x1927, 0x1928 }, { 0x1932, 0x1932 }, { 0x1939, 0x193B },
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{ 0x1A17, 0x1A18 }, { 0x1B00, 0x1B03 }, { 0x1B34, 0x1B34 },
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{ 0x1B36, 0x1B3A }, { 0x1B3C, 0x1B3C }, { 0x1B42, 0x1B42 },
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{ 0x1B6B, 0x1B73 }, { 0x1DC0, 0x1DCA }, { 0x1DFE, 0x1DFF },
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{ 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x2060, 0x2063 },
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{ 0x206A, 0x206F }, { 0x20D0, 0x20EF }, { 0x302A, 0x302F },
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{ 0x3099, 0x309A }, { 0xA806, 0xA806 }, { 0xA80B, 0xA80B },
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{ 0xA825, 0xA826 }, { 0xFB1E, 0xFB1E }, { 0xFE00, 0xFE0F },
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{ 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, { 0xFFF9, 0xFFFB },
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{ 0x10A01, 0x10A03 }, { 0x10A05, 0x10A06 }, { 0x10A0C, 0x10A0F },
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{ 0x10A38, 0x10A3A }, { 0x10A3F, 0x10A3F }, { 0x1D167, 0x1D169 },
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{ 0x1D173, 0x1D182 }, { 0x1D185, 0x1D18B }, { 0x1D1AA, 0x1D1AD },
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{ 0x1D242, 0x1D244 }, { 0xE0001, 0xE0001 }, { 0xE0020, 0xE007F },
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{ 0xE0100, 0xE01EF }
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};
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/* test for 8-bit control characters */
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if (ucs == 0)
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return 0;
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if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))
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return -1;
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/* binary search in table of non-spacing characters */
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if (bisearch(ucs, combining,
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sizeof(combining) / sizeof(struct interval) - 1))
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return 0;
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/* if we arrive here, ucs is not a combining or C0/C1 control character */
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return 1 +
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(ucs >= 0x1100 &&
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(ucs <= 0x115f || /* Hangul Jamo init. consonants */
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ucs == 0x2329 || ucs == 0x232a ||
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(ucs >= 0x2e80 && ucs <= 0xa4cf &&
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ucs != 0x303f) || /* CJK ... Yi */
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(ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */
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(ucs >= 0xf900 && ucs <= 0xfaff) || /* CJK Compatibility Ideographs */
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(ucs >= 0xfe10 && ucs <= 0xfe19) || /* Vertical forms */
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(ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */
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(ucs >= 0xff00 && ucs <= 0xff60) || /* Fullwidth Forms */
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(ucs >= 0xffe0 && ucs <= 0xffe6) ||
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(ucs >= 0x20000 && ucs <= 0x2fffd) ||
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(ucs >= 0x30000 && ucs <= 0x3fffd)));
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}
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/*
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* The following functions are part of the original wcwidth.c:
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* we don't use them but I've kept them in case - pws.
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*/
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#if 0
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int mk_wcswidth(const wchar_t *pwcs, size_t n)
|
||||
{
|
||||
int w, width = 0;
|
||||
|
||||
for (;*pwcs && n-- > 0; pwcs++)
|
||||
if ((w = mk_wcwidth(*pwcs)) < 0)
|
||||
return -1;
|
||||
else
|
||||
width += w;
|
||||
|
||||
return width;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* The following functions are the same as mk_wcwidth() and
|
||||
* mk_wcswidth(), except that spacing characters in the East Asian
|
||||
* Ambiguous (A) category as defined in Unicode Technical Report #11
|
||||
* have a column width of 2. This variant might be useful for users of
|
||||
* CJK legacy encodings who want to migrate to UCS without changing
|
||||
* the traditional terminal character-width behaviour. It is not
|
||||
* otherwise recommended for general use.
|
||||
*/
|
||||
int mk_wcwidth_cjk(wchar_t ucs)
|
||||
{
|
||||
/* sorted list of non-overlapping intervals of East Asian Ambiguous
|
||||
* characters, generated by "uniset +WIDTH-A -cat=Me -cat=Mn -cat=Cf c" */
|
||||
static const struct interval ambiguous[] = {
|
||||
{ 0x00A1, 0x00A1 }, { 0x00A4, 0x00A4 }, { 0x00A7, 0x00A8 },
|
||||
{ 0x00AA, 0x00AA }, { 0x00AE, 0x00AE }, { 0x00B0, 0x00B4 },
|
||||
{ 0x00B6, 0x00BA }, { 0x00BC, 0x00BF }, { 0x00C6, 0x00C6 },
|
||||
{ 0x00D0, 0x00D0 }, { 0x00D7, 0x00D8 }, { 0x00DE, 0x00E1 },
|
||||
{ 0x00E6, 0x00E6 }, { 0x00E8, 0x00EA }, { 0x00EC, 0x00ED },
|
||||
{ 0x00F0, 0x00F0 }, { 0x00F2, 0x00F3 }, { 0x00F7, 0x00FA },
|
||||
{ 0x00FC, 0x00FC }, { 0x00FE, 0x00FE }, { 0x0101, 0x0101 },
|
||||
{ 0x0111, 0x0111 }, { 0x0113, 0x0113 }, { 0x011B, 0x011B },
|
||||
{ 0x0126, 0x0127 }, { 0x012B, 0x012B }, { 0x0131, 0x0133 },
|
||||
{ 0x0138, 0x0138 }, { 0x013F, 0x0142 }, { 0x0144, 0x0144 },
|
||||
{ 0x0148, 0x014B }, { 0x014D, 0x014D }, { 0x0152, 0x0153 },
|
||||
{ 0x0166, 0x0167 }, { 0x016B, 0x016B }, { 0x01CE, 0x01CE },
|
||||
{ 0x01D0, 0x01D0 }, { 0x01D2, 0x01D2 }, { 0x01D4, 0x01D4 },
|
||||
{ 0x01D6, 0x01D6 }, { 0x01D8, 0x01D8 }, { 0x01DA, 0x01DA },
|
||||
{ 0x01DC, 0x01DC }, { 0x0251, 0x0251 }, { 0x0261, 0x0261 },
|
||||
{ 0x02C4, 0x02C4 }, { 0x02C7, 0x02C7 }, { 0x02C9, 0x02CB },
|
||||
{ 0x02CD, 0x02CD }, { 0x02D0, 0x02D0 }, { 0x02D8, 0x02DB },
|
||||
{ 0x02DD, 0x02DD }, { 0x02DF, 0x02DF }, { 0x0391, 0x03A1 },
|
||||
{ 0x03A3, 0x03A9 }, { 0x03B1, 0x03C1 }, { 0x03C3, 0x03C9 },
|
||||
{ 0x0401, 0x0401 }, { 0x0410, 0x044F }, { 0x0451, 0x0451 },
|
||||
{ 0x2010, 0x2010 }, { 0x2013, 0x2016 }, { 0x2018, 0x2019 },
|
||||
{ 0x201C, 0x201D }, { 0x2020, 0x2022 }, { 0x2024, 0x2027 },
|
||||
{ 0x2030, 0x2030 }, { 0x2032, 0x2033 }, { 0x2035, 0x2035 },
|
||||
{ 0x203B, 0x203B }, { 0x203E, 0x203E }, { 0x2074, 0x2074 },
|
||||
{ 0x207F, 0x207F }, { 0x2081, 0x2084 }, { 0x20AC, 0x20AC },
|
||||
{ 0x2103, 0x2103 }, { 0x2105, 0x2105 }, { 0x2109, 0x2109 },
|
||||
{ 0x2113, 0x2113 }, { 0x2116, 0x2116 }, { 0x2121, 0x2122 },
|
||||
{ 0x2126, 0x2126 }, { 0x212B, 0x212B }, { 0x2153, 0x2154 },
|
||||
{ 0x215B, 0x215E }, { 0x2160, 0x216B }, { 0x2170, 0x2179 },
|
||||
{ 0x2190, 0x2199 }, { 0x21B8, 0x21B9 }, { 0x21D2, 0x21D2 },
|
||||
{ 0x21D4, 0x21D4 }, { 0x21E7, 0x21E7 }, { 0x2200, 0x2200 },
|
||||
{ 0x2202, 0x2203 }, { 0x2207, 0x2208 }, { 0x220B, 0x220B },
|
||||
{ 0x220F, 0x220F }, { 0x2211, 0x2211 }, { 0x2215, 0x2215 },
|
||||
{ 0x221A, 0x221A }, { 0x221D, 0x2220 }, { 0x2223, 0x2223 },
|
||||
{ 0x2225, 0x2225 }, { 0x2227, 0x222C }, { 0x222E, 0x222E },
|
||||
{ 0x2234, 0x2237 }, { 0x223C, 0x223D }, { 0x2248, 0x2248 },
|
||||
{ 0x224C, 0x224C }, { 0x2252, 0x2252 }, { 0x2260, 0x2261 },
|
||||
{ 0x2264, 0x2267 }, { 0x226A, 0x226B }, { 0x226E, 0x226F },
|
||||
{ 0x2282, 0x2283 }, { 0x2286, 0x2287 }, { 0x2295, 0x2295 },
|
||||
{ 0x2299, 0x2299 }, { 0x22A5, 0x22A5 }, { 0x22BF, 0x22BF },
|
||||
{ 0x2312, 0x2312 }, { 0x2460, 0x24E9 }, { 0x24EB, 0x254B },
|
||||
{ 0x2550, 0x2573 }, { 0x2580, 0x258F }, { 0x2592, 0x2595 },
|
||||
{ 0x25A0, 0x25A1 }, { 0x25A3, 0x25A9 }, { 0x25B2, 0x25B3 },
|
||||
{ 0x25B6, 0x25B7 }, { 0x25BC, 0x25BD }, { 0x25C0, 0x25C1 },
|
||||
{ 0x25C6, 0x25C8 }, { 0x25CB, 0x25CB }, { 0x25CE, 0x25D1 },
|
||||
{ 0x25E2, 0x25E5 }, { 0x25EF, 0x25EF }, { 0x2605, 0x2606 },
|
||||
{ 0x2609, 0x2609 }, { 0x260E, 0x260F }, { 0x2614, 0x2615 },
|
||||
{ 0x261C, 0x261C }, { 0x261E, 0x261E }, { 0x2640, 0x2640 },
|
||||
{ 0x2642, 0x2642 }, { 0x2660, 0x2661 }, { 0x2663, 0x2665 },
|
||||
{ 0x2667, 0x266A }, { 0x266C, 0x266D }, { 0x266F, 0x266F },
|
||||
{ 0x273D, 0x273D }, { 0x2776, 0x277F }, { 0xE000, 0xF8FF },
|
||||
{ 0xFFFD, 0xFFFD }, { 0xF0000, 0xFFFFD }, { 0x100000, 0x10FFFD }
|
||||
};
|
||||
|
||||
/* binary search in table of non-spacing characters */
|
||||
if (bisearch(ucs, ambiguous,
|
||||
sizeof(ambiguous) / sizeof(struct interval) - 1))
|
||||
return 2;
|
||||
|
||||
return mk_wcwidth(ucs);
|
||||
}
|
||||
|
||||
|
||||
int mk_wcswidth_cjk(const wchar_t *pwcs, size_t n)
|
||||
{
|
||||
int w, width = 0;
|
||||
|
||||
for (;*pwcs && n-- > 0; pwcs++)
|
||||
if ((w = mk_wcwidth_cjk(*pwcs)) < 0)
|
||||
return -1;
|
||||
else
|
||||
width += w;
|
||||
|
||||
return width;
|
||||
}
|
||||
#endif /* 0 */
|
||||
|
||||
/**/
|
||||
#endif /* BROKEN_WCWIDTH */
|
||||
|
||||
|
|
|
|||
|
|
@ -960,10 +960,10 @@ countprompt(char *str, int *wp, int *hp, int overf)
|
|||
break;
|
||||
default:
|
||||
/*
|
||||
* If the character isn't printable, wcwidth() returns
|
||||
* If the character isn't printable, WCWIDTH() returns
|
||||
* -1. We assume width 1.
|
||||
*/
|
||||
wcw = wcwidth(wc);
|
||||
wcw = WCWIDTH(wc);
|
||||
if (wcw >= 0)
|
||||
w += wcw;
|
||||
else
|
||||
|
|
@ -1177,7 +1177,7 @@ prompttrunc(int arg, int truncchar, int doprint, int endchar)
|
|||
remw--;
|
||||
break;
|
||||
default:
|
||||
wcw = wcwidth(cc);
|
||||
wcw = WCWIDTH(cc);
|
||||
if (wcw >= 0)
|
||||
remw -= wcw;
|
||||
else
|
||||
|
|
@ -1249,7 +1249,7 @@ prompttrunc(int arg, int truncchar, int doprint, int endchar)
|
|||
maxwidth--;
|
||||
break;
|
||||
default:
|
||||
wcw = wcwidth(cc);
|
||||
wcw = WCWIDTH(cc);
|
||||
if (wcw >= 0)
|
||||
maxwidth -= wcw;
|
||||
else
|
||||
|
|
|
|||
|
|
@ -548,7 +548,7 @@ wcs_nicechar(wchar_t c, size_t *widthp, char **swidep)
|
|||
}
|
||||
|
||||
if (widthp) {
|
||||
int wcw = wcwidth(c);
|
||||
int wcw = WCWIDTH(c);
|
||||
*widthp = (s - buf);
|
||||
if (wcw >= 0)
|
||||
*widthp += wcw;
|
||||
|
|
@ -581,7 +581,7 @@ zwcwidth(wint_t wc)
|
|||
/* assume a single-byte character if not valid */
|
||||
if (wc == WEOF || unset(MULTIBYTE))
|
||||
return 1;
|
||||
wcw = wcwidth(wc);
|
||||
wcw = WCWIDTH(wc);
|
||||
/* if not printable, assume width 1 */
|
||||
if (wcw < 0)
|
||||
return 1;
|
||||
|
|
@ -4097,7 +4097,7 @@ mb_metastrlen(char *ptr, int width)
|
|||
* Returns -1 if not a printable character. We
|
||||
* turn this into 1 for backward compatibility.
|
||||
*/
|
||||
int wcw = wcwidth(wc);
|
||||
int wcw = WCWIDTH(wc);
|
||||
if (wcw >= 0)
|
||||
num += wcw;
|
||||
else
|
||||
|
|
|
|||
30
Src/zsh.h
30
Src/zsh.h
|
|
@ -2256,12 +2256,21 @@ typedef wint_t convchar_t;
|
|||
#define MB_METASTRWIDTH(str) mb_metastrlen(str, 1)
|
||||
#define MB_METASTRLEN2(str, widthp) mb_metastrlen(str, widthp)
|
||||
|
||||
#ifdef BROKEN_WCWIDTH
|
||||
#define WCWIDTH(wc) wcwidth_mk(wc)
|
||||
#else
|
||||
#define WCWIDTH(wc) wcwidth(wc)
|
||||
#endif
|
||||
/*
|
||||
* Note WCWIDTH() takes wint_t, typically as a convchar_t.
|
||||
* Note WCWIDTH_WINT() takes wint_t, typically as a convchar_t.
|
||||
* It's written to use the wint_t from mb_metacharlenconv() without
|
||||
* further tests.
|
||||
*
|
||||
* This version has a non-multibyte definition that simply returns
|
||||
* 1. We never expose WCWIDTH() in the non-multibyte world since
|
||||
* it's just a proxy for wcwidth() itself.
|
||||
*/
|
||||
#define WCWIDTH(wc) zwcwidth(wc)
|
||||
#define WCWIDTH_WINT(wc) zwcwidth(wc)
|
||||
|
||||
#define MB_INCOMPLETE ((size_t)-2)
|
||||
#define MB_INVALID ((size_t)-1)
|
||||
|
|
@ -2286,9 +2295,6 @@ typedef wint_t convchar_t;
|
|||
*
|
||||
* wc is assumed to be a wchar_t (i.e. we don't need zwcwidth).
|
||||
*
|
||||
* This may need to be more careful if we import a wcwidth() for
|
||||
* compatibility to try to avoid clashes with the system library.
|
||||
*
|
||||
* Pedantic note: in Unicode, a combining character need not be
|
||||
* zero length. However, we are concerned here about display;
|
||||
* we simply need to know whether the character will be displayed
|
||||
|
|
@ -2296,7 +2302,15 @@ typedef wint_t convchar_t;
|
|||
* sense throughout the shell. I am not aware of a way of
|
||||
* detecting the Unicode trait in standard libraries.
|
||||
*/
|
||||
#define IS_COMBINING(wc) (wcwidth(wc) == 0)
|
||||
#ifdef BROKEN_WCWIDTH
|
||||
/*
|
||||
* We can't be quite sure the wcwidth we've provided is entirely
|
||||
* in agreement with the system's, so be extra safe.
|
||||
*/
|
||||
#define IS_COMBINING(wc) (WCWIDTH(wc) == 0 && !iswcntrl(wc))
|
||||
#else
|
||||
#define IS_COMBINING(wc) (WCWIDTH(wc) == 0)
|
||||
#endif
|
||||
/*
|
||||
* Test for the base of a combining character.
|
||||
*
|
||||
|
|
@ -2305,7 +2319,7 @@ typedef wint_t convchar_t;
|
|||
* is, as long as it has non-zero width. We need to avoid all forms of
|
||||
* space because the shell will split words on any whitespace.
|
||||
*/
|
||||
#define IS_BASECHAR(wc) (iswgraph(wc) && wcwidth(wc) > 0)
|
||||
#define IS_BASECHAR(wc) (iswgraph(wc) && WCWIDTH(wc) > 0)
|
||||
|
||||
#else /* not MULTIBYTE_SUPPORT */
|
||||
|
||||
|
|
@ -2317,7 +2331,7 @@ typedef int convchar_t;
|
|||
#define MB_METASTRWIDTH(str) ztrlen(str)
|
||||
#define MB_METASTRLEN2(str, widthp) ztrlen(str)
|
||||
|
||||
#define WCWIDTH(c) (1)
|
||||
#define WCWIDTH_WINT(c) (1)
|
||||
|
||||
/* Leave character or string as is. */
|
||||
#define ZWC(c) c
|
||||
|
|
|
|||
55
configure.ac
55
configure.ac
|
|
@ -2266,8 +2266,63 @@ wmemcpy wmemmove wmemset; do
|
|||
])
|
||||
AH_TEMPLATE([MULTIBYTE_SUPPORT],
|
||||
[Define to 1 if you want support for multibyte character sets.])
|
||||
AH_TEMPLATE([BROKEN_WCWIDTH],
|
||||
[Define to 1 if the wcwidth() function is present but broken.])
|
||||
if test x$zsh_cv_c_unicode_support = xyes; then
|
||||
AC_DEFINE(MULTIBYTE_SUPPORT)
|
||||
|
||||
dnl Test for a wcwidth() implementation that gives the wrong width for
|
||||
dnl zero-width combining characters.
|
||||
dnl For the test we use a combining acute accent (\u0301).
|
||||
dnl We input it as UTF-8 since that is the standard we can rely
|
||||
dnl upon most: we can't rely on a wchar_t being stored as a
|
||||
dnl Unicode code point on all systems.
|
||||
dnl The programme returns 0 only if all the conditions for brokenness
|
||||
dnl are met:
|
||||
dnl - the programme compiled, linked and ran
|
||||
dnl - we successfully set a UTF-8 locale
|
||||
dnl - the locale we set plausibly converted the UTF-8 string
|
||||
dnl for a zero-width combining character (the only way to be
|
||||
dnl 100% sure would be to output it and ask if it looked right)
|
||||
dnl - the converted wide character gave a non-zero width.
|
||||
dnl locale -a is a fallback; on most systems we should find en_US.UTF-8.
|
||||
[locale_prog='char *my_locales[] = {
|
||||
"en_US.UTF-8", "en_GB.UTF-8", "en.UTF-8", '
|
||||
locale_prog="$locale_prog"`locale -a 2>/dev/null | \
|
||||
sed -e 's/utf8/UTF-8/' | grep UTF-8 | \
|
||||
while read line; do echo " \"$line\","; done;`
|
||||
locale_prog="$locale_prog 0 };
|
||||
#define _XOPEN_SOURCE
|
||||
#include <stdlib.h>
|
||||
#include <locale.h>
|
||||
#include <wchar.h>
|
||||
|
||||
int main() {
|
||||
char **localep;
|
||||
char comb_acute_mb[] = { (char)0xcc, (char)0x81 };
|
||||
wchar_t wc;
|
||||
|
||||
for (localep = my_locales; *localep; localep++)
|
||||
if (setlocale(LC_ALL, *localep) &&
|
||||
mbtowc(&wc, comb_acute_mb, 2) == 2)
|
||||
break;
|
||||
if (!*localep)
|
||||
return 1;
|
||||
if (wcwidth(wc) == 0)
|
||||
return 1;
|
||||
return 0;
|
||||
}
|
||||
"]
|
||||
|
||||
AC_CACHE_CHECK(if the wcwidth() function is broken,
|
||||
zsh_cv_c_broken_wcwidth,
|
||||
[AC_TRY_RUN([$locale_prog],
|
||||
zsh_cv_c_broken_wcwidth=yes,
|
||||
zsh_cv_c_broken_wcwidth=no,
|
||||
zsh_cv_c_broken_wcwidth=no)])
|
||||
if test x$zsh_cv_c_broken_wcwdith = xyes; then
|
||||
AC_DEFINE(BROKEN_WCWIDTH)
|
||||
fi
|
||||
fi
|
||||
|
||||
dnl
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue