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| author | Tay Ray Chuan <rctay89@gmail.com> | 2011-07-12 14:10:25 +0800 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2011-07-12 09:29:20 -0700 |
| commit | 8c912eea94a2138e8bc608f7c390eb0b313effb0 (patch) | |
| tree | 244d67eaac3f77d6645bdf69b87e23a90dbb2485 /diff.c | |
| parent | 46c8f2988dc9a6012babd5833a6245ceff214483 (diff) | |
| download | git-8c912eea94a2138e8bc608f7c390eb0b313effb0.tar.gz | |
teach --histogram to diff
Port JGit's HistogramDiff algorithm over to C. Rough numbers (TODO) show
that it is faster than its --patience cousin, as well as the default
Meyers algorithm.
The implementation has been reworked to use structs and pointers,
instead of bitmasks, thus doing away with JGit's 2^28 line limit.
We also use xdiff's default hash table implementation (xdl_hash_bits()
with XDL_HASHLONG()) for convenience.
Signed-off-by: Tay Ray Chuan <rctay89@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -3369,6 +3369,8 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL); else if (!strcmp(arg, "--patience")) DIFF_XDL_SET(options, PATIENCE_DIFF); + else if (!strcmp(arg, "--histogram")) + DIFF_XDL_SET(options, HISTOGRAM_DIFF); /* flags options */ else if (!strcmp(arg, "--binary")) { |