t / lib-rebase.shon commit lib-rebase: Provide clearer debugging info about what the editor did (f64b485)
   1#!/bin/sh
   2
   3# After setting the fake editor with this function, you can
   4#
   5# - override the commit message with $FAKE_COMMIT_MESSAGE,
   6# - amend the commit message with $FAKE_COMMIT_AMEND
   7# - check that non-commit messages have a certain line count with $EXPECT_COUNT
   8# - rewrite a rebase -i script with $FAKE_LINES in the form
   9#
  10#       "[<lineno1>] [<lineno2>]..."
  11#
  12#   If a line number is prefixed with "squash", "fixup", "edit", or
  13#   "reword", the respective line's command will be replaced with the
  14#   specified one.
  15
  16set_fake_editor () {
  17        echo "#!$SHELL_PATH" >fake-editor.sh
  18        cat >> fake-editor.sh <<\EOF
  19case "$1" in
  20*/COMMIT_EDITMSG)
  21        test -z "$FAKE_COMMIT_MESSAGE" || echo "$FAKE_COMMIT_MESSAGE" > "$1"
  22        test -z "$FAKE_COMMIT_AMEND" || echo "$FAKE_COMMIT_AMEND" >> "$1"
  23        exit
  24        ;;
  25esac
  26test -z "$EXPECT_COUNT" ||
  27        test "$EXPECT_COUNT" = $(sed -e '/^#/d' -e '/^$/d' < "$1" | wc -l) ||
  28        exit
  29test -z "$FAKE_LINES" && exit
  30grep -v '^#' < "$1" > "$1".tmp
  31rm -f "$1"
  32echo 'rebase -i script before editing:'
  33cat "$1".tmp
  34action=pick
  35for line in $FAKE_LINES; do
  36        case $line in
  37        squash|fixup|edit|reword)
  38                action="$line";;
  39        *)
  40                sed -n "${line}s/^pick/$action/p" < "$1".tmp >> "$1"
  41                action=pick;;
  42        esac
  43done
  44echo 'rebase -i script after editing:'
  45cat "$1"
  46EOF
  47
  48        test_set_editor "$(pwd)/fake-editor.sh"
  49        chmod a+x fake-editor.sh
  50}