Added: git-sed

1 files changed, 189 insertions, 0 deletions

diff --git a/git-sed b/git-sed
new file mode 100755
index 0000000..ec70ae8
--- /dev/null
+++ b/git-sed
@@ -0,0 +1,189 @@
+#!/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" "$@" ;;
+      esac
+  fi
+}
+
+args "$@"