cg-admin-cat

   1 #!/usr/bin/env bash
   2 #
   3 # Cat file(s) by filename from given tree or revision
   4 # Copyright (c) John Ellson, 2005
   5 #
   6 # Cat a file of a given filename in a given revision (or in the current
   7 # one) to stdout.
   8 #
   9 # OPTIONS
  10 # -------
  11 # -r TREE_ID:: Look for file in the given revision or tree
  12 #       ID of the revision or tree where to look for the file, instead of
  13 #       HEAD.
  14
  15 # Testsuite: TODO
  16
  17 # The tale of birth:
  18 # Initiated from a request from:                    erg@research.att.com
  19 #   for an equivalent to "cvs co -p <filename>"
  20 # Question posted with really bad initial solution: ellson@research.att.com
  21 # Suggestions offered by:                           Johannes.Schindelin@gmx.de
  22 #                                                   rene.scharfe@lsrfire.ath.cx
  23 # This solution based on posting from:              torvalds@osdl.org
  24 # Polish and test by:                               ellson@research.att.com
  25
  26 USAGE="cg-admin-cat [-r TREE_ID] FILE..."
  27 _git_wc_unneeded=1
  28
  29 . "${COGITO_LIB}"cg-Xlib || exit 1
  30
  31 rev=HEAD
  32 while optparse; do
  33         if optparse -r=; then
  34                 rev="$OPTARG"
  35         else
  36                 optfail
  37         fi
  38 done
  39
  40 [ ${#ARGS[*]} -ge 1 ] || usage
  41
  42 id=$(cg-object-id -t "$rev") || exit 1
  43
  44 git-ls-tree "$id" "${ARGS[@]}" |
  45         while read -r mode type sha name
  46         do
  47                 case "$type" in
  48                 blob)
  49                         git-cat-file blob "$sha"
  50                         ;;
  51                 tree)
  52                         git-ls-tree "$sha"
  53                         ;;
  54                 *)
  55                         exit 1
  56                         ;;
  57                 esac
  58         done