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|
#! @BASH@
# This script is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# See the COPYING and AUTHORS files for more details.
# Read in library functions
if [ "$(type -t patch_file_name)" != function ]
then
if ! [ -r $QUILT_DIR/scripts/patchfns ]
then
echo "Cannot read library $QUILT_DIR/scripts/patchfns" >&2
exit 1
fi
. $QUILT_DIR/scripts/patchfns
fi
usage()
{
printf $"Usage: quilt annotate [-p patch] {file}\n"
if [ x$1 = x-h ]
then
printf $"
Print an annotated listing of the specified file showing which
patches modify which lines. Only applied patches are included.
-p patch
Stop checking for changes at the specified rather than the
topmost patch.
"
exit 0
else
exit 1
fi
}
empty_file()
{
local file=$1
[ -s "$file" ] \
&& sed -e 's:.*::' "$file"
}
annotation_for()
{
local old_file=$1 new_file=$2 annotation=$3
[ -s "$old_file" ] || old_file=/dev/null
[ -s "$new_file" ] || new_file=/dev/null
diff -Ne "$old_file" "$new_file" \
| perl -e '
while (<>) {
if (/^\d+(?:,\d+)?[ac]$/) {
print;
while (<>) {
last if /^\.$/;
print "'"$annotation"'\n";
}
print;
next;
}
print;
}
'
}
merge_files()
{
local a b saved_IFS="$IFS"
local template=$1 file=$2
[ -e "$file" ] || file=/dev/null
exec 3< "$template"
exec 4< "$file"
IFS=
while read -r a <&3
do
read -r b <&4
echo "$a"$'\t'"$b"
done
IFS="$saved_IFS"
exec 3<&-
exec 4<&-
}
options=`getopt -o p:h -- "$@"`
if [ $? -ne 0 ]
then
usage
fi
eval set -- "$options"
while true
do
case "$1" in
-p)
if ! opt_patch=$(find_patch "$2")
then
printf $"Patch %s is not in series\n" "$2" >&2
exit 1
fi
shift 2 ;;
-h)
usage -h ;;
--)
shift
break ;;
esac
done
if [ $# -ne 1 ]
then
usage
fi
opt_file="$SUBDIR$1"
if [ -n "$opt_patch" ] && ! is_applied "$opt_patch"
then
printf $"Patch %s is not applied\n" \
"$(print_patch "$opt_patch")" >&2
exit 1
fi
for patch in $(applied_patches); do
old_file="$(backup_file_name "$patch" "$opt_file")"
if [ -f "$old_file" ]
then
patches[${#patches[@]}]="$patch"
files[${#files[@]}]="$old_file"
fi
if [ "$opt_patch" = "$patch" ]
then
# We also need to know the next patch, if any
next_patch="$(next_patch_for_file "$opt_patch" "$opt_file")"
break
fi
done
if [ -z "$next_patch" ]
then
files[${#files[@]}]="$opt_file"
else
files[${#files[@]}]="$(backup_file_name "$next_patch" "$opt_file")"
fi
if [ ${#patches[@]} = 0 ]
then
sed -e 's:^:'$'\t'':' "${files[${#files[@]}-1]}"
exit 0
fi
template=$(gen_tempfile)
trap "rm -f $template" EXIT
# The annotated listing is generated as follows: A file of annotations
# is created based on a file that contains the same number of lines as
# the source file, but all lines are empty.
#
# Then, for each patch that modifies the source file, an ed-style diff
# (which has no context, and removes lines that are removed without
# caring for the line's contents) is generated. In that diff, all line
# additions are replaced with the identifier of the patch (1, 2, ...).
# These patches are then applied to the empty file.
#
# Finally, the annotations listing is merged with the source file line
# by line.
empty_file ${files[0]} > $template
for ((n = 0; n < ${#patches[@]}; n++))
do
annotation_for "${files[n]}" "${files[n+1]}" $((n+1))
done \
| patch $template
merge_files $template "${files[${#files[@]}-1]}"
echo
for ((n = 0; n < ${#patches[@]}; n++))
do
echo "$((n+1))"$'\t'"$(print_patch ${patches[n]})"
done
### Local Variables:
### mode: shell-script
### End:
# vim:filetype=sh
|
