mirror of
https://github.com/tj/git-extras.git
synced 2026-09-16 02:16:17 -04:00
113 lines
3 KiB
Bash
Executable file
113 lines
3 KiB
Bash
Executable file
#!/bin/bash
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for param in $*
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do
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case $param in
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-h|--help )
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echo 'Usage: git-guilt [<options>] <since> <until>'
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echo 'Calculates the change in blame between two revisions'
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echo 'Example: git guilt HEAD~3 HEAD'
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echo
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echo 'Options:'
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echo
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echo ' -h, --help output usage information'
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echo ' -e, --email display author emails instead of names'
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echo ' -w, --ignore-whitespace ignore whitespace only changes when attributing blame'
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echo ' -d, --debug output debug information'
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exit 0
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;;
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-e|--email )
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EMAIL='-e'
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shift
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;;
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-w|--ignore-whitespace )
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NOT_WHITESPACE='-w'
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shift
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;;
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-d|--debug )
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DEBUG=$(git_extra_mktemp)
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shift
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;;
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esac
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done
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cd "$(git-root)" # cd for git blame
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SINCE_LOG=$(git_extra_mktemp)
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UNTIL_LOG=$(git_extra_mktemp)
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for file in $(git diff --name-only "$@")
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do
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test -n "$DEBUG" && echo "git blame $file"
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# $1 - since $2 - until
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git blame $NOT_WHITESPACE --line-porcelain "$1" -- "$file" 2> /dev/null >> $SINCE_LOG
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git blame $NOT_WHITESPACE --line-porcelain "$2" -- "$file" 2> /dev/null >> $UNTIL_LOG
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done
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MERGED_LOG=$(git_extra_mktemp)
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if [[ $EMAIL == '-e' ]]
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then
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PATTERN='s/^author-mail <\(.*\)>/\1/p'
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else
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PATTERN='s/^author //p'
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fi
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sed -n "$PATTERN" $SINCE_LOG | sed 's/^\(.\)/- \1/' >> $MERGED_LOG
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sed -n "$PATTERN" $UNTIL_LOG | sed 's/^\(.\)/+ \1/' >> $MERGED_LOG
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DEBUG="$DEBUG" awk '
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NR==1 {
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# the index of $2 does not change in each line
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name_start_at = index($0, $2)
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}
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/^\+/ {
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contributors[substr($0, name_start_at)]++
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}
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/^-/ {
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contributors[substr($0, name_start_at)]--
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}
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END {
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print ENVIRON["DEBUG"]
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for (people in contributors) {
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if (ENVIRON["DEBUG"]) {
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printf("%d %s\n", contributors[people], people) >> ENVIRON["DEBUG"]
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}
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if (contributors[people] != 0) {
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printf("%d %s\n", contributors[people], people)
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}
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}
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}' $MERGED_LOG | sort -nr | # only gawk supports built-in sort function
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awk '
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BEGIN { MAX = 50 }
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/^-?[[:digit:]]+ / {
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people = substr($0, index($0, $2))
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if ($1 > 0) {
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printf("%-29s \033[00;32m", people)
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if ($1 < MAX) {
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for (i = 0; i < $1; i++)
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printf("+")
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}
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else {
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bound = MAX - length($1) - 2
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for (i = 0; i < bound; i++)
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printf("+")
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printf("(%d)", $1)
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}
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printf("\033[00m\n")
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}
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else {
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printf("%-29s \033[00;31m", people)
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deletes = -$1
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if (deletes < MAX) {
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for (i = 0; i < deletes; i++)
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printf("-")
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}
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else {
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bound = MAX - length(deletes) - 2
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for (i = 0; i < bound; i++)
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printf("-")
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printf("(%d)", deletes)
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}
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printf("\033[00m\n")
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}
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}'
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test -n "$DEBUG" && sort -nr "$DEBUG"
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