зеркало из https://github.com/github/ruby.git
91 строка
2.0 KiB
Bash
Executable File
91 строка
2.0 KiB
Bash
Executable File
#!/bin/sh
|
||
# usage: ifchange target temporary
|
||
|
||
# Used in generating revision.h via Makefiles.
|
||
|
||
set -e
|
||
timestamp=
|
||
keepsuffix=
|
||
empty=
|
||
color=auto
|
||
until [ $# -eq 0 ]; do
|
||
case "$1" in
|
||
--timestamp)
|
||
timestamp=.
|
||
;;
|
||
--timestamp=*)
|
||
timestamp=`expr \( "$1" : '[^=]*=\(.*\)' \)`
|
||
;;
|
||
--keep)
|
||
keepsuffix=.old
|
||
;;
|
||
--keep=*)
|
||
keepsuffix=`expr \( "$1" : '[^=]*=\(.*\)' \)`
|
||
;;
|
||
--empty)
|
||
empty=yes
|
||
;;
|
||
--color)
|
||
color=always
|
||
;;
|
||
--color=*)
|
||
color=`expr \( "$1" : '[^=]*=\(.*\)' \)`
|
||
;;
|
||
--debug)
|
||
set -x
|
||
;;
|
||
*)
|
||
break
|
||
;;
|
||
esac
|
||
shift
|
||
done
|
||
|
||
target="$1"
|
||
temp="$2"
|
||
if [ "$temp" = - ]; then
|
||
temp="tmpdata$$.tmp~"
|
||
cat > "$temp"
|
||
trap 'rm -f "$temp"' 0
|
||
fi
|
||
|
||
msg_begin= msg_unchanged= msg_updated= msg_reset=
|
||
if [ "$color" = always -o \( "$color" = auto -a -t 1 \) ]; then
|
||
msg_begin="["
|
||
case "`tput smso 2>/dev/null`" in
|
||
"$msg_begin"*m)
|
||
if [ ${TEST_COLORS:+set} ]; then
|
||
msg_unchanged=`expr ":$TEST_COLORS:" : ".*:pass=\([^:]*\):"` || :
|
||
msg_updated=`expr ":$TEST_COLORS:" : ".*:fail=\([^:]*\):"` || :
|
||
fi
|
||
msg_unchanged="${msg_begin}${msg_unchanged:-32}m"
|
||
msg_updated="${msg_begin}${msg_updated:-31;1}m"
|
||
msg_reset="${msg_begin}m"
|
||
;;
|
||
esac
|
||
unset msg_begin
|
||
fi
|
||
|
||
targetdir=
|
||
case "$target" in */*) targetdir=`dirname "$target"`;; esac
|
||
if [ -f "$target" -a ! -${empty:+f}${empty:-s} "$temp" ] || cmp "$target" "$temp" >/dev/null 2>&1; then
|
||
echo "$target ${msg_unchanged}unchanged${msg_reset}"
|
||
rm -f "$temp"
|
||
else
|
||
echo "$target ${msg_updated}updated${msg_reset}"
|
||
[ x"${targetdir}" = x -o -d "${targetdir}" ] || mkdir -p "${targetdir}"
|
||
[ x"${keepsuffix}" != x -a -f "$target" ] && mv -f "$target" "${target}${keepsuffix}"
|
||
mv -f "$temp" "$target"
|
||
fi
|
||
|
||
if [ -n "${timestamp}" ]; then
|
||
if [ x"${timestamp}" = x. ]; then
|
||
if [ x"$targetdir" = x ]; then
|
||
timestamp=.time."$target"
|
||
else
|
||
timestamp="$targetdir"/.time.`basename "$target"`
|
||
fi
|
||
fi
|
||
: > "$timestamp"
|
||
fi
|