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#!/bin/sh |
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# Original copyright (C) 2002, Earnie Boyd |
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# mailto:earnie@users.sf.net |
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# This implementation copyright (C) 2006, 2008, Keith Marshall |
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# mailto:keithmarshall@users.sf.net |
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# |
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# This file is part of MSYS |
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# http://www.mingw.org/msys.shtml |
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# |
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# File: which |
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# $Id: which,v 1.4 2009/03/14 14:13:32 keithmarshall Exp $ |
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|
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CMD=`IFS='\\/:'; set CMD $0; eval echo \$\{$#\}` |
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if test $# -lt 1 |
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then |
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echo >&2 "$CMD: syntax error: missing argument" |
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echo >&2 "Usage: $CMD [ -a | --all ] cmd ..." |
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exit 1 |
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fi |
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|
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# To accomodate Woe32's typically asinine $PATH, which frequently |
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# includes directory names with embedded spaces, we need to set up |
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# $IFS to consider only a newline as a field separator. |
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IFS=$'\n' |
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|
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break=break |
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for PROG |
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do |
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if test x"$PROG" = x-a || test x"$PROG" = x--all |
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then |
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break="" |
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else |
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WHICH="" |
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# need `type -ap -- "$PROG" || type -p -- "$PROG"' |
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# because `type -ap foo' reports nothing, if both `foo' and `foo.exe' |
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# are present, and are distinct. |
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for LIST in `type -ap -- "$PROG" || type -p -- "$PROG"` |
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do |
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if test -f "$LIST" |
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then |
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# preserve `.exe' extension |
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WHICH="$LIST"`test -f "$LIST.exe" && echo '.exe'` |
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if test "$LIST" != "$WHICH" |
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then |
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# detect distinct `foo' and `foo.exe' |
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# (this needs IFS=<space>, to get the INODE numbers) |
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IFS=" " INODE1=`ls -id "$LIST"` INODE2=`ls -id "$WHICH"` |
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if test `set ref $INODE1; echo $2` != `set ref $INODE2; echo $2` |
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then |
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# `foo' matches first, followed by `foo.exe' |
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test -z "$break" && echo "$LIST" || WHICH="$LIST" |
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fi |
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# reset IFS=<newline>, to get any further PROG names |
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IFS=$'\n' |
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fi |
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echo "$WHICH" |
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$break |
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fi |
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done |
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test x"$WHICH" = x && echo >&2 "$CMD: $PROG: "${ERROR="unknown command"} |
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fi |
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done |
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test ${ERROR+set} && exit 1 |
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exit 0 |
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|
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# $RCSfile: which,v $: end of file |
