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revision: move diff merges functions to its own diff-merges.c

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Create separate diff-merges.c and diff-merges.h files, and move all
the code related to handling of diff merges there.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Sergey Organov
2020-12-21 18:19:33 +03:00
committed by Junio C Hamano
parent 3d4fd94363
commit a37eec6333
6 changed files with 97 additions and 78 deletions
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76
diff-merges.c Normal file
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@ -0,0 +1,76 @@
#include "diff-merges.h"
#include "revision.h"
void init_diff_merge_revs(struct rev_info *revs)
{
revs->ignore_merges = -1;
}
int parse_diff_merge_opts(struct rev_info *revs, const char **argv)
{
int argcount = 1;
const char *optarg;
const char *arg = argv[0];
if (!strcmp(arg, "-m")) {
/*
* To "diff-index", "-m" means "match missing", and to the "log"
* family of commands, it means "show full diff for merges". Set
* both fields appropriately.
*/
revs->ignore_merges = 0;
revs->match_missing = 1;
} else if (!strcmp(arg, "-c")) {
revs->diff = 1;
revs->dense_combined_merges = 0;
revs->combine_merges = 1;
} else if (!strcmp(arg, "--cc")) {
revs->diff = 1;
revs->dense_combined_merges = 1;
revs->combine_merges = 1;
} else if (!strcmp(arg, "--no-diff-merges")) {
revs->ignore_merges = 1;
} else if (!strcmp(arg, "--combined-all-paths")) {
revs->diff = 1;
revs->combined_all_paths = 1;
} else if ((argcount = parse_long_opt("diff-merges", argv, &optarg))) {
if (!strcmp(optarg, "off")) {
revs->ignore_merges = 1;
} else {
die(_("unknown value for --diff-merges: %s"), optarg);
}
} else
argcount = 0;
return argcount;
}
void setup_diff_merges_revs(struct rev_info *revs)
{
if (revs->combine_merges && revs->ignore_merges < 0)
revs->ignore_merges = 0;
if (revs->ignore_merges < 0)
revs->ignore_merges = 1;
if (revs->combined_all_paths && !revs->combine_merges)
die("--combined-all-paths makes no sense without -c or --cc");
}
void rev_diff_merges_first_parent_defaults_to_enable(struct rev_info *revs)
{
if (revs->first_parent_only && revs->ignore_merges < 0)
revs->ignore_merges = 0;
}
void rev_diff_merges_default_to_dense_combined(struct rev_info *revs)
{
if (revs->ignore_merges < 0) {
/* There was no "-m" variant on the command line */
revs->ignore_merges = 0;
if (!revs->first_parent_only && !revs->combine_merges) {
/* No "--first-parent", "-c", or "--cc" */
revs->combine_merges = 1;
revs->dense_combined_merges = 1;
}
}
}