[PATCHv2 1/2] merge-recursive: option to specify rename threshold
- From
Kevin Ballard <kevin@sb.org>
- Date
- Sep 27, 2010, 23:58 UTC
- Message-ID
- <1285631906-18200-1-git-send-email-kevin@sb.org>
- In-Reply-To
- <FFDB2371-6C96-472C-A650-412546636450@sb.org>
The recursive merge strategy turns on rename detection but leaves the rename threshold at the default. Add a strategy option to allow the user to specify a rename threshold to use.
Signed-off-by: Kevin Ballard <kevin@sb.org> --- Documentation/merge-strategies.txt | 4 ++++ diff.c | 6 +++--- diff.h | 2 ++ merge-recursive.c | 6 ++++++ merge-recursive.h | 1 + 5 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/Documentation/merge-strategies.txt b/Documentation/merge-strategies.txt index 91faba5..77f2606 100644 --- a/Documentation/merge-strategies.txt +++ b/Documentation/merge-strategies.txt @@ -74,6 +74,10 @@ no-renormalize;; Disables the `renormalize` option. This overrides the `merge.renormalize` configuration variable. +rename-threshold=<n>;; + Controls the similarity threshold used for rename detection. + See also linkgit:git-diff[1] `-M`. + subtree[=path];; This option is a more advanced form of 'subtree' strategy, where the strategy makes a guess on how two trees must be shifted to diff --git a/diff.c b/diff.c index cc73061..d862234 100644 --- a/diff.c +++ b/diff.c @@ -3323,7 +3323,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) return 1; } -static int parse_num(const char **cp_p) +int parse_rename_score(const char **cp_p) { unsigned long num, scale; int ch, dot; @@ -3369,7 +3369,7 @@ static int diff_scoreopt_parse(const char *opt) if (cmd != 'M' && cmd != 'C' && cmd != 'B') return -1; /* that is not a -M, -C nor -B option */ - opt1 = parse_num(&opt); + opt1 = parse_rename_score(&opt); if (cmd != 'B') opt2 = 0; else { @@ -3379,7 +3379,7 @@ static int diff_scoreopt_parse(const char *opt) return -1; /* we expect -B80/99 or -B80 */ else { opt++; - opt2 = parse_num(&opt); + opt2 = parse_rename_score(&opt); } } if (*opt != 0) diff --git a/diff.h b/diff.h index 1fd44f5..0083d92 100644 --- a/diff.h +++ b/diff.h @@ -315,4 +315,6 @@ extern size_t fill_textconv(struct userdiff_driver *driver, extern struct userdiff_driver *get_textconv(struct diff_filespec *one); +extern int parse_rename_score(const char **cp_p); + #endif /* DIFF_H */ diff --git a/merge-recursive.c b/merge-recursive.c index 325a97b..875859f 100644 --- a/merge-recursive.c +++ b/merge-recursive.c @@ -334,6 +334,7 @@ static struct string_list *get_renames(struct merge_options *o, opts.rename_limit = o->merge_rename_limit >= 0 ? o->merge_rename_limit : o->diff_rename_limit >= 0 ? o->diff_rename_limit : 500; + opts.rename_score = o->rename_score; opts.warn_on_too_large_rename = 1; opts.output_format = DIFF_FORMAT_NO_OUTPUT; if (diff_setup_done(&opts) < 0) @@ -1576,6 +1577,11 @@ int parse_merge_opt(struct merge_options *o, const char *s) o->renormalize = 1; else if (!strcmp(s, "no-renormalize")) o->renormalize = 0; + else if (!prefixcmp(s, "rename-threshold=")) { + const char *score = s + strlen("rename-threshold="); + if ((o->rename_score = parse_rename_score(&score)) == -1 || *score != 0) + return -1; + } else return -1; return 0; diff --git a/merge-recursive.h b/merge-recursive.h index 2eb5d1a..c8135b0 100644 --- a/merge-recursive.h +++ b/merge-recursive.h @@ -19,6 +19,7 @@ struct merge_options { int verbosity; int diff_rename_limit; int merge_rename_limit; + int rename_score; int call_depth; struct strbuf obuf; struct string_list current_file_set;
-- 1.7.3.72.g8af0.dirty