parsecvs-as-sidehist

   1 #!/bin/bash
   2
   3 # $Id$
   4 # Description:
   5 # Adds the result of parsecvs as a side history (with the specified prefix) to the local existing Git repository.
   6 # I intend to use it for translating RCS histories for individual files into Git as independent histories (parseRCS-indep).
   7 # I will manually merge the results of parseRCS-indep to form a good Git history of the tree
   8 # (manual merging can give better results than parsecvs in cases when CVS hasn't been used, but there are merely RCS histories).
   9 #
  10 # Author: Ivan Zakharyaschev imz at altlinux dot org, March 2009.
  11 # I publish it under GPL (as parsecvs is published).
  12
  13 set -e
  14
  15 usage() {
  16     printf $"Usage: %s REMOTENAME ... , where ... stands for parsecvs args.\n" "$0"
  17 }
  18
  19 if [[ $# < 1 ]]; then
  20     usage
  21     exit 1
  22 fi
  23
  24 readonly REMOTE="$1"
  25 shift
  26
  27 readonly WORK_DIR="$(mktemp -d --tmpdir parsecvs-"$(basename "$REMOTE")".XXXXXX)"
  28 # -- basename is needed to make / possible in the branchnames.
  29 # I'll remove the temp dir only if the script completes successfully;
  30 # otherwise, let it stay for investigation.
  31 failed() {
  32     printf $"%s failed; investigate in %s.\n" "$0" "$WORK_DIR"
  33 }
  34 trap failed ERR
  35
  36 GIT_DIR="$WORK_DIR"/.git parsecvs "$@"
  37
  38 git fetch "$WORK_DIR" refs/heads/*:"$REMOTE"/*
  39 # Sensible are: refs/PREFIX/... (then it can be seen in gitk),
  40 # refs/remotes/PREFIX/... (then "git branch -a" shows it);
  41 # one of these variants will be used in the wrapper that makes a forest.
  42
  43 echo $"Cleaning up:"
  44 rm -rf "$WORK_DIR" && printf $"%s removed.\n" "$WORK_DIR"