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authorKarl Berry <karl@freefriends.org>2006-01-17 21:16:42 +0000
committerKarl Berry <karl@freefriends.org>2006-01-17 21:16:42 +0000
commita3d3111bfe26b8e5f5bc6049dfb2a4ca2edc7881 (patch)
treef4a8a34f904c1bb86adcc3ae0e14434badc6dbe4 /Build/source/utils/gzip/znew.in
parent6c0eafbb1395d426a72a74538e0b2a95e8344ca6 (diff)
utils 1
git-svn-id: svn://tug.org/texlive/trunk@1484 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/utils/gzip/znew.in')
-rw-r--r--Build/source/utils/gzip/znew.in146
1 files changed, 146 insertions, 0 deletions
diff --git a/Build/source/utils/gzip/znew.in b/Build/source/utils/gzip/znew.in
new file mode 100644
index 00000000000..5b61471e030
--- /dev/null
+++ b/Build/source/utils/gzip/znew.in
@@ -0,0 +1,146 @@
+:
+#!/bin/sh
+
+PATH="BINDIR:$PATH"; export PATH
+check=0
+pipe=0
+opt=
+files=
+keep=0
+res=0
+old=0
+new=0
+block=1024
+# block is the disk block size (best guess, need not be exact)
+
+warn="(does not preserve modes and timestamp)"
+tmp=/tmp/zfoo.$$
+echo hi > $tmp.1
+echo hi > $tmp.2
+if test -z "`(${CPMOD-cpmod} $tmp.1 $tmp.2) 2>&1`"; then
+ cpmod=${CPMOD-cpmod}
+ warn=""
+fi
+
+if test -z "$cpmod" && ${TOUCH-touch} -r $tmp.1 $tmp.2 2>/dev/null; then
+ cpmod="${TOUCH-touch}"
+ cpmodarg="-r"
+ warn="(does not preserve file modes)"
+fi
+
+# check if GZIP env. variable uses -S or --suffix
+gzip -q $tmp.1
+ext=`echo $tmp.1* | sed "s|$tmp.1||"`
+rm -f $tmp.[12]*
+if test -z "$ext"; then
+ echo znew: error determining gzip extension
+ exit 1
+fi
+if test "$ext" = ".Z"; then
+ echo znew: cannot use .Z as gzip extension.
+ exit 1
+fi
+
+for arg
+do
+ case "$arg" in
+ -*) opt="$opt $arg"; shift;;
+ *) break;;
+ esac
+done
+
+if test $# -eq 0; then
+ echo "recompress .Z files into $ext (gzip) files"
+ echo usage: `echo $0 | sed 's,^.*/,,'` "[-tv9KP]" file.Z...
+ echo " -t tests the new files before deleting originals"
+ echo " -v be verbose"
+ echo " -9 use the slowest compression method (optimal compression)"
+ echo " -K keep a .Z file when it is smaller than the $ext file"
+ echo " -P use pipes for the conversion $warn"
+ exit 1
+fi
+
+opt=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`
+case "$opt" in
+ *t*) check=1; opt=`echo "$opt" | sed 's/t//g'`
+esac
+case "$opt" in
+ *K*) keep=1; opt=`echo "$opt" | sed 's/K//g'`
+esac
+case "$opt" in
+ *P*) pipe=1; opt=`echo "$opt" | sed 's/P//g'`
+esac
+if test -n "$opt"; then
+ opt="-$opt"
+fi
+
+for i do
+ n=`echo $i | sed 's/.Z$//'`
+ if test ! -f "$n.Z" ; then
+ echo $n.Z not found
+ res=1; continue
+ fi
+ test $keep -eq 1 && old=`wc -c < "$n.Z"`
+ if test $pipe -eq 1; then
+ if gzip -d < "$n.Z" | gzip $opt > "$n$ext"; then
+ # Copy file attributes from old file to new one, if possible.
+ test -n "$cpmod" && $cpmod $cpmodarg "$n.Z" "$n$ext" 2> /dev/null
+ else
+ echo error while recompressing $n.Z
+ res=1; continue
+ fi
+ else
+ if test $check -eq 1; then
+ if cp -p "$n.Z" "$n.$$" 2> /dev/null || cp "$n.Z" "$n.$$"; then
+ :
+ else
+ echo cannot backup "$n.Z"
+ res=1; continue
+ fi
+ fi
+ if gzip -d "$n.Z"; then
+ :
+ else
+ test $check -eq 1 && mv "$n.$$" "$n.Z"
+ echo error while uncompressing $n.Z
+ res=1; continue
+ fi
+ if gzip $opt "$n"; then
+ :
+ else
+ if test $check -eq 1; then
+ mv "$n.$$" "$n.Z" && rm -f "$n"
+ echo error while recompressing $n
+ else
+ # compress $n (might be dangerous if disk full)
+ echo error while recompressing $n, left uncompressed
+ fi
+ res=1; continue
+ fi
+ fi
+ test $keep -eq 1 && new=`wc -c < "$n$ext"`
+ if test $keep -eq 1 -a `expr \( $old + $block - 1 \) / $block` -lt \
+ `expr \( $new + $block - 1 \) / $block`; then
+ if test $pipe -eq 1; then
+ rm -f "$n$ext"
+ elif test $check -eq 1; then
+ mv "$n.$$" "$n.Z" && rm -f "$n$ext"
+ else
+ gzip -d "$n$ext" && compress "$n" && rm -f "$n$ext"
+ fi
+ echo "$n.Z smaller than $n$ext -- unchanged"
+
+ elif test $check -eq 1; then
+ if gzip -t "$n$ext" ; then
+ rm -f "$n.$$" "$n.Z"
+ else
+ test $pipe -eq 0 && mv "$n.$$" "$n.Z"
+ rm -f "$n$ext"
+ echo error while testing $n$ext, $n.Z unchanged
+ res=1; continue
+ fi
+ elif test $pipe -eq 1; then
+ rm -f "$n.Z"
+ fi
+done
+exit $res