mirror of
git://git.code.sf.net/p/zsh/code
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136 lines
3.8 KiB
Bash
Executable file
136 lines
3.8 KiB
Bash
Executable file
#! /bin/sh
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#
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# c2z - environment conversion tool
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# Contributed by Bart Schaefer
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# (Tweaked a bit by Paul Falstad)
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# (Tweaked again by Bart Schaefer)
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#
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# This is a quick script to convert csh aliases to zsh aliases/functions.
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# It also converts the csh environment and local variables to zsh. c2z
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# uses the csh to parse its own dot-files, then processes csh output to
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# convert the csh settings to zsh.
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#
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# When run as a zsh fuction, c2z runs csh as if it were an interactive
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# shell whenever the parent zsh is interactive. When run as a shell
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# script, the -i switch can be used to force this behavior.
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#
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# The -l (login) switch causes csh to run as if it were a login shell.
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# This is done "properly" if c2z is used as a zsh function, otherwise
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# it's faked by explicitly sourcing .login. Use with caution if your
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# .login initializes an X server or does other one-time-only startup
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# procedures.
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#
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# usage:
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# c2z [-i | -l | filename]
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#
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# You can use this script in your .zshrc or .zlogin files to load your
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# regular csh environment into zsh; for example, in .zlogin:
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#
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# . =(c2z -l)
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#
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# This is not perfect, but it gets most common aliases and variables.
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# It's also rather time-consuming to do this every time you log in.
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# However, if you're moving from csh to zsh for the first time, this
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# can get you started with a familiar environment right away.
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#
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# In case your mailer eats tabs, $T is set to expand to a tab.
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#
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T="`echo x | tr x '\011'`"
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# If we're zsh, we can run "- csh" to get the complete environment.
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#
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MINUS=""
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LOADFILE=""
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INTERACT=""
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CSH=csh
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case "$ZSH_NAME$ZSH_VERSION$VERSION" in
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zsh*)
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case $1 in
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-l*) MINUS="-" ;;
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-i*) INTERACT="-i" ;;
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*) LOADFILE="source $1" CSH="csh -f";;
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esac
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if [[ -o INTERACTIVE ]]; then INTERACT="-i"; fi
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setopt nobanghist
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;;
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*)
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case $1 in
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-l*) LOADFILE="source ~/.login" ;;
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-i*) INTERACT="-i" ;;
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*) LOADFILE="source $1" CSH="csh -f";;
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esac
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;;
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esac
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( eval $MINUS $CSH $INTERACT ) <<EOF 2>&1 >/dev/null
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$LOADFILE
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alias >! /tmp/cz$$.a
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setenv >! /tmp/cz$$.e
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set >! /tmp/cz$$.v
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EOF
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# save stdin
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exec 9<&0
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# First convert aliases
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exec < /tmp/cz$$.a
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# Taken straight from ctoz except for $T and "alias --"
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sed -e 's/'"$T"'(\(.*\))/'"$T"'\1/' >/tmp/cz$$.1
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grep ! /tmp/cz$$.1 >/tmp/cz$$.2
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grep -v ! /tmp/cz$$.1 >/tmp/cz$$.3
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sed -e "s/'/'"\\\\"''"/g \
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-e 's/^\([^'"$T"']*\)'"$T"'\(.*\)$/alias -- \1='"'\2'/" \
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/tmp/cz$$.3
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sed -e 's/>\(&*\)!/>\1|/g' \
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-e 's/!\*:q/"$@"/g' \
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-e 's/\(![:#]*[^'"$T"']*\):q/"\1"/g' \
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-e 's/!\([-0-9][0-9]*\)\(:x\)*/$\2(fc -nl \1)/g' \
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-e 's/\$:x(fc/$=(fc/g' \
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-e 's/![:#]*\([^'"$T"']\)/$==\1/g' \
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-e 's/\$=\(=[^'"$T"']*\):x/$\1/g' \
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-e 's/\$cwd/$PWD/' \
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-e 's/^\([^'"$T"']*\)'"$T"'\(.*\)$/\1 () { \2 }/' \
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/tmp/cz$$.2
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# Next, convert environment variables
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exec < /tmp/cz$$.e
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# Would be nice to deal with embedded newlines, e.g. in TERMCAP, but ...
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sed -e '/^SHLVL/d' \
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-e '/^PWD/d' \
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-e '/^_=/d' \
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-e "s/'/'"\\\\"''"/g \
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-e "s/^\([A-Za-z0-9_]*=\)/export \1'/" \
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-e "s/$/'/"
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# Finally, convert local variables
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exec < /tmp/cz$$.v
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sed -e 's/'"$T"'/=/' \
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-e "s/'/'"\\\\"''"/g \
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-e '/^[A-Za-z0-9_]*=[^(]/{
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s/=/='"'/"'
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s/$/'"'/"'
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}' |
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sed -e '/^argv=/d' -e '/^cwd=/d' -e '/^filec=/d' -e '/^status=/d' \
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-e '/^autolist=/s/.*/setopt autolist/' \
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-e '/^correct=all/s//setopt correctall/' \
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-e '/^correct=/s//setopt correct/' \
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-e '/^histchars=/s//HISTCHARS=/' \
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-e '/^history=/s//HISTSIZE=/' \
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-e '/^home=/s//HOME=/' \
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-e '/^ignoreeof=/s/.*/setopt ignoreeof/' \
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-e '/^noclobber=/s/.*/setopt noclobber/' \
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-e '/^notify=/d' \
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-e '/^prompt=/s/!/%h/' \
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-e 's/^prompt/PROMPT/' \
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-e '/^showdots=/s/.*/setopt globdots/' \
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-e '/^savehist=/s//HISTFILE=\~\/.zhistory SAVEHIST=/' \
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-e '/^who=/s//WATCHFMT=/'
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exec 0<&9
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rm /tmp/cz$$.?
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exit
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