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[PATCH] guilt(1): Obvious bashisms fixed.

From
Pierre Habouzit <madcoder@debian.org>
Date
Jun 14, 2007, 12:50 UTC
Message-ID
<1181825462590-git-send-email-madcoder@debian.org>
In-Reply-To
<11818254621527-git-send-email-madcoder@debian.org>
  + function foo { } -> foo() { }
  + add wrapper for echo -e
  + couple of '[' bashisms
  + get rid of easy local variables to remove
  + avoid cd - (using subshells)
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
---
 guilt |  185 ++++++++++++++++++++++++++++++++---------------------------------
 1 files changed, 91 insertions(+), 94 deletions(-)
diff --git a/guilt b/guilt
index 2ae76f8..80f3faf 100755
--- a/guilt
+++ b/guilt
@@ -20,7 +20,29 @@ SUBDIRECTORY_OK=1
 
 . git-sh-setup
 
-function guilt_commands
+#
+# Shell library
+#
+
+# echo -e is a bashism, fallback to /bin/echo if the builtin does not supports it
+echo()
+{
+	/bin/echo "$@"
+}
+
+noerr()
+{
+    "$@" 2>/dev/null
+}
+
+silent()
+{
+    "$@" >/dev/null 2>/dev/null
+}
+
+########
+
+guilt_commands()
 {
 	local command
 	for command in $0-*
@@ -32,7 +54,7 @@ function guilt_commands
 	done
 }
 
-if [ `basename $0` = "guilt" ]; then
+if [ "`basename $0`" = "guilt" ]; then
 	# being run as standalone
 
 	# by default, we shouldn't fail
@@ -58,7 +80,7 @@ if [ `basename $0` = "guilt" ]; then
 				esac
 			done
 		fi
-		if [ $cmd ]; then
+		if [ -n "$cmd" ]; then
 			shift
 			exec "$dir/guilt-$cmd" "$@"
 
@@ -96,68 +118,55 @@ fi
 #
 
 # usage: valid_patchname <patchname>
-function valid_patchname
+valid_patchname()
 {
-	[ `echo "$1" | grep -e '^/' | wc -l` -gt 0 ] && return 1
-	[ `echo "$1" | grep -e '^\./' | wc -l` -gt 0 ] && return 1
-	[ `echo "$1" | grep -e '^\.\./' | wc -l` -gt 0 ] && return 1
-	[ `echo "$1" | grep -e '/\./' | wc -l` -gt 0 ] && return 1
-	[ `echo "$1" | grep -e '/\.\./' | wc -l` -gt 0 ] && return 1
-	[ `echo "$1" | grep -e '/\.$' | wc -l` -gt 0 ] && return 1
-	[ `echo "$1" | grep -e '/\.\.$' | wc -l` -gt 0 ] && return 1
-	[ `echo "$1" | grep -e '/$' | wc -l` -gt 0 ] && return 1
-	return 0
+	case "$1" in
+		/*|./*|../*|*/./*|*/../*|*/.|*/..|*/)
+			return 1;;
+		*)
+			return 0;;
+	esac
 }
 
-function get_branch
+get_branch()
 {
 	git-symbolic-ref HEAD | sed -e 's,^refs/heads/,,'
 }
 
-function verify_branch
+verify_branch()
 {
-	local b=$branch
-
 	[ ! -d "$GIT_DIR/patches" ] &&
 		echo "Patches directory doesn't exist, try guilt-init" >&2 &&
 		return 1
-	[ ! -d "$GIT_DIR/patches/$b" ] &&
-		echo "Branch $b is not initialized, try guilt-init" >&2 &&
+	[ ! -d "$GIT_DIR/patches/$branch" ] &&
+		echo "Branch $branch is not initialized, try guilt-init" >&2 &&
 		return 1
-	[ ! -f "$GIT_DIR/patches/$b/series" ] &&
-		echo "Branch $b does not have a series file" >&2 &&
+	[ ! -f "$GIT_DIR/patches/$branch/series" ] &&
+		echo "Branch $branch does not have a series file" >&2 &&
 		return 1
-	[ ! -f "$GIT_DIR/patches/$b/status" ] &&
-		echo "Branch $b does not have a status file" >&2 &&
+	[ ! -f "$GIT_DIR/patches/$branch/status" ] &&
+		echo "Branch $branch does not have a status file" >&2 &&
 		return 1
-	[ -f "$GIT_DIR/patches/$b/applied" ] &&
-		echo "Warning: Branch $b has 'applied' file - guilt is not compatible with stgit" >&2 &&
+	[ -f "$GIT_DIR/patches/$branch/applied" ] &&
+		echo "Warning: Branch $branch has 'applied' file - guilt is not compatible with stgit" >&2 &&
 		return 1
 
 	return 0
 }
 
-function get_top
+get_top()
 {
 	tail -1 "$GUILT_DIR/$branch/status" | cut -d: -f 2-
 }
 
-function get_prev
+get_prev()
 {
-	local n=`wc -l < "$GUILT_DIR/$branch/status"`
-	local n=`expr $n - 1`
-
-	local idx=0
-	cat "$GUILT_DIR/$branch/status" | while read p; do
-		idx=`expr $idx + 1`
-		[ $idx -lt $n ] && continue
-		[ $idx -gt $n ] && break
-
-		echo "$p"
-	done
+	if [ `wc -l < "$GUILT_DIR/$branch/status"` -gt 1 ]; then
+		tail -n 2 "$GUILT_DIR/$branch/status" | head -n 1
+	fi
 }
 
-function get_series
+get_series()
 {
 	# ignore all lines matching:
 	#	- empty lines
@@ -168,7 +177,7 @@ function get_series
 }
 
 # usage: do_make_header <hash>
-function do_make_header
+do_make_header()
 {
 	# which revision do we want to work with?
 	local rev="$1"
@@ -195,7 +204,7 @@ BEGIN{ok=0}
 }
 
 # usage: do_get_header patchfile
-function do_get_header
+do_get_header()
 {
 	# The complexity arises from the fact that we want to ignore the
 	# From line and the empty line after it if it exists
@@ -212,7 +221,7 @@ END{}
 }
 
 # usage: do_get_full_header patchfile
-function do_get_full_header
+do_get_full_header()
 {
 	# 2nd line checks for the begining of a patch
 	# 3rd line outputs the line if it didn't get pruned by the above rules
@@ -225,37 +234,31 @@ END{}
 }
 
 # usage: assert_head_check
-function assert_head_check
+assert_head_check()
 {
-	local eh=`tail -1 < "$applied" | cut -d: -f 1`
-
-	if ! head_check "$eh"; then
+	if ! head_check "`tail -1 < "$applied" | cut -d: -f 1`"; then
 		die "aborting..."
 	fi
-
-	return 0
 }
 
 # usage: head_check <expected hash>
-function head_check
+head_check()
 {
 	# make sure we're not doing funky things to commits that don't
 	# belong to us
-	local ch=`cat "$GIT_DIR/refs/heads/$branch"`
-
 	# if the expected hash is empty, just return
 	[ -z "$1" ] && return 0
 
-	if [ "$ch" != "$1" ]; then
+	if [ "`cat "$GIT_DIR/refs/heads/$branch"`" != "$1" ]; then
 		echo "Expected HEAD commit $1" >&2
-		echo "                 got $ch" >&2
+		echo "                 got `cat "$GIT_DIR/refs/heads/$branch"`" >&2
 		return 1
 	fi
 	return 0
 }
 
 # usage: series_insert_patch <patchname>
-function series_insert_patch
+series_insert_patch()
 {
 	local top=`get_top | sed -e 's,/,\\\\/,g'`
 	local new=`echo "$1" | sed -e 's,/,\\\\/,g'` 
@@ -271,14 +274,14 @@ function series_insert_patch
 }
 
 # usage: series_remove_patch <patchname>
-function series_remove_patch
+series_remove_patch()
 {
 	grep -v "^$1\$" < "$series" > "$series.tmp"
 	mv "$series.tmp" "$series"
 }
 
 # usage: series_rename_patch <oldname> <newname>
-function series_rename_patch
+series_rename_patch()
 {
 	local old=`echo "$1" | sed -e 's,/,\\\\/,g'`
 	local new=`echo "$2" | sed -e 's,/,\\\\/,g'` 
@@ -290,7 +293,7 @@ function series_rename_patch
 # file directly
 #
 # usage: applied_rename_patch <oldname> <newname>
-function applied_rename_patch
+applied_rename_patch()
 {
 	local old=`echo "$1" | sed -e 's,/,\\\\/,g'`
 	local new=`echo "$2" | sed -e 's,/,\\\\/,g'` 
@@ -299,33 +302,32 @@ function applied_rename_patch
 }
 
 # usage: pop_many_patches <commitish> <number of patches>
-function pop_many_patches
+pop_many_patches()
 {
 	assert_head_check
 
+	(
 	cd "$TOP_DIR"
 
 	git-reset --hard "$1" > /dev/null
 	head -n "-$2" < "$applied" > "$applied.tmp"
 	mv "$applied.tmp" "$applied"
-
-	cd - 2>&1 >/dev/null
+	)
 
 	# update references to top, bottom, and base
 	update_stack_tags
 }
 
 # usage: pop_all_patches
-function pop_all_patches
+pop_all_patches()
 {
-	local x=`head -1 "$applied" | cut -d: -f1`
-	local n=`wc -l < "$applied"`
-
-	pop_many_patches $x^ $n
+	pop_many_patches \
+		`head -1 "$applied" | cut -d: -f1`^ \
+		`wc -l < "$applied"`
 }
 
 # usage: update_stack_tags
-function update_stack_tags
+update_stack_tags()
 {
 	# bail if autotagging is not enabled
 	if [ $autotag -eq 0 ]; then
@@ -336,13 +338,9 @@ function update_stack_tags
 		# there are patches applied, therefore we must get the top,
 		# bottom and base hashes, and update the tags
 
-		local top_hash=`git-rev-parse HEAD`
-		local bottom_hash=`head -1 < $applied | cut -d: -f1`
-		local base_hash=`git-rev-parse $bottom_hash^`
-
-		echo $top_hash > "$GIT_DIR/refs/tags/${branch}_top"
-		echo $bottom_hash > "$GIT_DIR/refs/tags/${branch}_bottom"
-		echo $base_hash > "$GIT_DIR/refs/tags/${branch}_base"
+                git-rev-parse HEAD > "$GIT_DIR/refs/tags/${branch}_top"
+                head -1 < $applied | cut -d: -f1 > "$GIT_DIR/refs/tags/${branch}_bottom"
+		git-rev-parse $(head -1 < $applied | cut -d: -f1)^ > "$GIT_DIR/refs/tags/${branch}_base"
 	else
 		# there are no patches applied, therefore we must remove the
 		# tags to old top, bottom, and base
@@ -354,7 +352,7 @@ function update_stack_tags
 }
 
 # usage: push_patch patchname [bail_action]
-function push_patch
+push_patch()
 {
 	local p="$GUILT_DIR/$branch/$1"
 	local pname="$1"
@@ -459,54 +457,53 @@ function push_patch
 }
 
 # usage: must_commit_first
-function must_commit_first
+must_commit_first()
 {
 	[ `git-diff-files | wc -l` -eq 0 ]
 	return $?
 }
 
 # usage: fold_patch patchname
-function fold_patch
+fold_patch()
 {
-	local top_patch=`get_top`
+	set -- "$1" "`get_top`"
 
 	assert_head_check
 
 	push_patch "$1"
 
-	__refresh_patch "$top_patch" HEAD^^ 2
+	__refresh_patch "$2" HEAD^^ 2
 
 	series_remove_patch "$1"
 }
 
 # usage: refresh_patch patchname
-function refresh_patch
+refresh_patch()
 {
 	__refresh_patch "$1" HEAD^ 1
 }
 
 # usage: __refresh_patch patchname commitish number_of_commits
-function __refresh_patch
+__refresh_patch()
 {
-	local p="$GUILT_DIR/$branch/$1"
-
 	assert_head_check
 
-	cd "$TOP_DIR"
-
-	git-diff-files --name-only | (while read n; do git-update-index "$n" ; done)
+	(
+		cd "$TOP_DIR"
+			p="$GUILT_DIR/$branch/$1"
 
-	# get the patch header
-	do_get_full_header "$p" > /tmp/guilt.diff.$$
+		git-diff-files --name-only | (while read n; do git-update-index "$n" ; done)
 
-	# get the new patch
-	git-diff "$2" >> /tmp/guilt.diff.$$
+		# get the patch header
+		do_get_full_header "$p" > /tmp/guilt.diff.$$
 
-	# move the new patch in
-	mv "$p" "$p~"
-	mv /tmp/guilt.diff.$$ $p
+		# get the new patch
+		git-diff "$2" >> /tmp/guilt.diff.$$
 
-	cd - 2>&1 >/dev/null
+		# move the new patch in
+		mv "$p" "$p~"
+		mv /tmp/guilt.diff.$$ $p
+	)
 
 	# drop the currently applied patch, pop_many_patches does it's own
 	# cd $TOP_DIR
@@ -525,7 +522,7 @@ function __refresh_patch
 #	<hash1>..<hash2>	- from hash to hash (inclusive)
 #
 # The output of this function is suitable to be passed to git-rev-list
-function munge_hash_range
+munge_hash_range()
 {
 	[ -z "$1" ] && return 1
 
-- 
1.5.2.1
Previous: Pierre HabouzitNext: Josef Sipek
Message 3 of 22 in “make guilt use standard POSIX shell”
  1. make guilt use standard POSIX shellPierre Habouzit, Jun 14, 2007
  2. Regression test suite needs bash, that's OK.Pierre Habouzit, Jun 14, 2007
  3. guilt(1): Obvious bashisms fixed.Pierre Habouzit, Jun 14, 2007
  4. Josef SipekJun 14, 2007
  5. Pierre HabouzitJun 14, 2007
  6. guilt(1): simplifications...Pierre Habouzit, Jun 14, 2007
  7. Josef SipekJun 14, 2007
  8. Pierre HabouzitJun 14, 2007
  9. guilt(1): reimplement push_patch, using a subshell to avoid locals.Pierre Habouzit, Jun 14, 2007
  10. Easy commands, without bashisms.Pierre Habouzit, Jun 14, 2007
  11. guilt-status(1): Remove bashisms.Pierre Habouzit, Jun 14, 2007
  12. Remove last bashisms from remaining commands.Pierre Habouzit, Jun 14, 2007
  13. Pierre HabouzitJun 14, 2007
  14. Small regresson when series file is empty.Pierre Habouzit, Jun 14, 2007
  15. Josef SipekJun 14, 2007
  16. Pierre HabouzitJun 14, 2007
  17. Pierre HabouzitJun 14, 2007
  18. Josef SipekJun 14, 2007
  19. Pierre HabouzitJun 14, 2007
  20. More regressions fixes.Pierre Habouzit, Jun 14, 2007
  21. Derek FawcusJun 15, 2007
  22. Benjamin SergeantJun 15, 2007

Read the whole thread, see it on lore, or plain text.

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