user/git-bk-find-file

   1 #!/usr/bin/env bash
   2 # Desc: Grep search filenames of all git committed work trees
   3 # Usage: git-bk-find-file [string grep pattern]
   4 # Example git-bk-find-file '.txt$'
   5 # Ref/Attrib: albfan "How can I search Git branches for a file or directory?" https://stackoverflow.com/a/16868704/10850071
   6 # Version: 0.2.0
   7 # Depends: GNU bash v5.1.16, GNU parallel 20210822
   8
   9 yell() { echo "$0: $*" >&2; } # print script path and all args to stderr
  10 die() { yell "$*"; exit 111; } # same as yell() but non-zero exit status
  11 must() { "$@" || die "cannot $*"; } # runs args as command, reports args if command fails
  12 check_depends() {
  13     # Desc: Check dependencies
  14     # Usage: check_depends
  15     # Depends: GNU parallel 20210822
  16     if ! command -v parallel 1>/dev/random 2>&1; then die "FATAL:Missing:parallel"; fi;
  17     if ! command -v git 1>/dev/random 2>&1; then die "FATAL:Missing:git"; fi;
  18 };
  19 check_args() {
  20     if [[ $# -le 0 ]]; then die "FATAL:Incorrect number of args:$#"; fi;
  21 }; # check arguments
  22 display_commit() {
  23     # Show commit if filename in committed tree matches grep pattern
  24     # Input: arg1: commit id
  25     #        args2+: passed to grep
  26     # Output: stdout
  27     # Depends: git 2.34.1
  28     local commit results;
  29
  30     commit="$1"; shift;
  31
  32     # Decide if need to show commit at all
  33     if results="$(git ls-tree -r --name-only "$commit" | grep "$1")"; then
  34         # Get commit timestamp
  35         time="$(git -c log.showSignature=false show -s --format=%cI "$commit")";
  36
  37         # Get first 8 chars of commit
  38         short_commit="${commit:0:8}";
  39
  40         # Output results
  41         while read -r line; do
  42             if [[ -z "$line" ]]; then continue; fi; # skip blank lines
  43             printf "%s %s %s\n" "$time" "$short_commit" "$line";
  44         done < <(printf "%s\n" "$results");
  45     fi;
  46
  47     return 0;
  48 }; # display commit
  49 main() {
  50     check_depends;
  51     check_args "$@";
  52     export -f yell die must display_commit;
  53     git rev-list --all | parallel --jobs=75% display_commit "{}" "$@";
  54 };
  55
  56 main "$@";
  57
  58 # Author: Steven Baltakatei Sandoval
  59 # License: GPLv3+