From 52e9578985fb636ec1d3f6cf794fdadd5ec896fc Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Sat, 21 May 2005 02:40:01 -0700 Subject: [PATCH] Introducing software archaeologist's tool "pickaxe". This steals the "pickaxe" feature from JIT and make it available to the bare Plumbing layer. From the command line, the user gives a string he is intersted in. Using the diff-core infrastructure previously introduced, it filters the differences to limit the output only to the diffs between and where the string appears only in one but not in the other. For example: $ ./git-rev-list HEAD | ./git-diff-tree -Sdiff-tree-helper --stdin -M would show the diffs that touch the string "diff-tree-helper". In real software-archaeologist application, you would typically look for a few to several lines of code and see where that code came from. The "pickaxe" module runs after "rename/copy detection" module, so it even crosses the file rename boundary, as the above example demonstrates. Signed-off-by: Junio C Hamano Signed-off-by: Linus Torvalds --- diff-helper.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'diff-helper.c') diff --git a/diff-helper.c b/diff-helper.c index 4e966db769..568d5ae356 100644 --- a/diff-helper.c +++ b/diff-helper.c @@ -9,6 +9,7 @@ static int detect_rename = 0; static int diff_score_opt = 0; static int generate_patch = 1; +static char *pickaxe = 0; static int parse_oneside_change(const char *cp, int *mode, unsigned char *sha1, char *path) @@ -93,7 +94,7 @@ static int parse_diff_raw_output(const char *buf) } static const char *diff_helper_usage = - "git-diff-helper [-z] [-R] [-M] [-C] paths..."; + "git-diff-helper [-z] [-R] [-M] [-C] [-S] paths..."; int main(int ac, const char **av) { struct strbuf sb; @@ -117,14 +118,17 @@ int main(int ac, const char **av) { detect_rename = 2; diff_score_opt = diff_scoreopt_parse(av[1]); } + else if (av[1][1] == 'S') { + pickaxe = av[1] + 2; + } else usage(diff_helper_usage); ac--; av++; } /* the remaining parameters are paths patterns */ - diff_setup(detect_rename, diff_score_opt, reverse, - (generate_patch ? -1 : line_termination), + diff_setup(detect_rename, diff_score_opt, pickaxe, + reverse, (generate_patch ? -1 : line_termination), av+1, ac-1); while (1) { -- cgit v1.2.3