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| author | Junio C Hamano <junkio@cox.net> | 2005-05-21 02:40:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-05-21 09:58:03 -0700 |
| commit | 52e9578985fb636ec1d3f6cf794fdadd5ec896fc (patch) | |
| tree | bb22f522116f5d8e6ae677b7a4660e959c052fc2 /diff-helper.c | |
| parent | 427dcb4bca49117664d9428fd4e86483f516d703 (diff) | |
| download | git-52e9578985fb636ec1d3f6cf794fdadd5ec896fc.tar.gz | |
[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 <src> and <dst> 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 <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'diff-helper.c')
| -rw-r--r-- | diff-helper.c | 10 |
1 files changed, 7 insertions, 3 deletions
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<string>] 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) { |