t / lib-rebase.shon commit attr: Expand macros immediately when encountered. (ec775c4)
   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 $FAKE_LINES in the form
   9#
  10#       "[<lineno1>] [<lineno2>]..."
  11#
  12#   If a line number is prefixed with "squash", "edit", or "reword", the
  13#   respective line's command will be replaced with the specified one.
  14
  15set_fake_editor () {
  16        echo "#!$SHELL_PATH" >fake-editor.sh
  17        cat >> fake-editor.sh <<\EOF
  18case "$1" in
  19*/COMMIT_EDITMSG)
  20        test -z "$FAKE_COMMIT_MESSAGE" || echo "$FAKE_COMMIT_MESSAGE" > "$1"
  21        test -z "$FAKE_COMMIT_AMEND" || echo "$FAKE_COMMIT_AMEND" >> "$1"
  22        exit
  23        ;;
  24esac
  25test -z "$EXPECT_COUNT" ||
  26        test "$EXPECT_COUNT" = $(sed -e '/^#/d' -e '/^$/d' < "$1" | wc -l) ||
  27        exit
  28test -z "$FAKE_LINES" && exit
  29grep -v '^#' < "$1" > "$1".tmp
  30rm -f "$1"
  31cat "$1".tmp
  32action=pick
  33for line in $FAKE_LINES; do
  34        case $line in
  35        squash|edit|reword)
  36                action="$line";;
  37        *)
  38                echo sed -n "${line}s/^pick/$action/p"
  39                sed -n "${line}p" < "$1".tmp
  40                sed -n "${line}s/^pick/$action/p" < "$1".tmp >> "$1"
  41                action=pick;;
  42        esac
  43done
  44EOF
  45
  46        test_set_editor "$(pwd)/fake-editor.sh"
  47        chmod a+x fake-editor.sh
  48}