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#!/bin/sh
# Copyright (c) 2011, 2013, 2014, 2015 Michele Bini
# This program is free software: you can redistribute it and/or modify
# it under the terms of the version 3 of the GNU General Public License
# as published by the Free Software Foundation.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
set -e
usage() {
echo "Invalid invocation. For more info: $0 --usage"
}
println() {
printf "%s\n" "$*"
}
warn() {
println "$0: $*" >&2
}
die() {
warn "$*"
exit 1
}
if [ -z "$1" ]; then usage; exit 1; fi
xargln() {
while IFS="" read -r line; do
"$@" "$line" </dev/tty
done
}
greprx="^"
gitsed_greprx() { # REGEXP - Select only files matching REGEXP
greprx="$1"; shift; args "$@"
}
gitsed_sedopts() { # ARGS - Pass ARGS to sed
SEDOPTS="$1"; shift; args "$@"
}
test=""
gitsed_test() { # - When combined with sed 'p' modifer, print lines that would change, without applying any actual change.
test=1; args "$@"
}
backupext=""
gitsed_backupext() { # EXT - Backup files before changing them to fileEXT
backupext=1
(echo -n "$backupext"|grep -q "[^a-zA-Z0-9$.]") && die "Invalid alphanumeric characters in --backupext"
args "$@"
}
gitsed_usage() { # - Print help
echo Usage: git-sed OPTIONS* -- SEDEXPR FILES*
echo
echo Options:
sed -n "s/^gitsed_/ --/g;T;s/() {//;s/ *# / /;p" <"$0"
}
content=""
filenames=""
gitsed_content() { # - Apply sed expression to content.
content=1
args "$@"
}
gitsed_filenames() { # - Apply sed expression to filenames.
filenames=1
args "$@"
}
gitsed_both() { # - Apply sed expression to both content and filenames
content=1
filenames=1
args "$@"
}
force_unstaged=""
gitsed_force() { # - Continue even in the presence of unstable changes
force_unstaged=1
args "$@"
}
gitsed_help() {
gitsed_usage "$@"
}
gitsed_debug() {
set -x; args "$@"
}
xargln() {
while IFS="" read -r line; do
"$@" "$line"
done
}
dosed() {
fname="$1"
if [ -n "$test" ]; then
sed -n $SEDOPTS -- "$sedexpr" <"$fname"
else
sed $SEDOPTS -- "$sedexpr" "$fname" && git update-index -- "$fname"
fi
}
mover() {
filename="$1"
newname="$(println "$filename"|sed $SEDOPTS -- "$sedexpr")"
if [ "$filename" = "$newname" ]; then :; else
mkdir -p "$(dirname "$newname")"
if [ -n "$test" ]; then
echo "Would rename $filename to $newname"
else
git mv -v -- "$filename" "$newname"
fi
fi
}
listfiles() {
git grep --no-full-name -l -e "^" -- "$@"
# git ls-files "$@"
}
apply() {
if [ -n "$test" ]; then
SEDOPTS="$SEDOPTS -n"
backupexit=""
fi
sedexpr="$1"
[ -z "$sedexpr" ] && die "You didn't specify a sed expression"
shift
if [ -z "$filenames" ] && [ -z "$content" ]; then
die "You need to add a --filenames, --content or --both option."
fi
if [ -n "$filenames" ]; then
listfiles "$@" | xargln mover
fi
if [ -z "$force_unstaged" ]; then
git diff --quiet -- "$@" || die "There are unstaged changes. Please stage or discard them before running git-sed."
fi
if [ -n "$test" ]; then
true
elif [ -n "$backupext" ]; then
SEDOPTS="$SEDOPTS -i$backupext"
else
SEDOPTS="$SEDOPTS --in-place"
fi
if [ -n "$content" ]; then
git grep --no-full-name -l -e "$greprx" -- "$@"|xargln dosed
fi
}
args() {
if [ -n "$1" ]; then
N="$1"; shift
case "$N" in
--) apply "$@" ;;
-E) SEDOPTS="$SEDOPTS -E"
args "$@"
;;
--*) gitsed_"${N#--}" "$@" ;;
*) apply "$N" "$@" ;;
esac
fi
}
args "$@"
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