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