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git/diff-merges.c
Sergey Organov 09322b1da9 diff-merges: new function diff_merges_suppress()
This function sets all the relevant flags to disabled state, so that
no code that checks only one of them get it wrong.

Then we call this new function everywhere where diff merges output
suppression is needed.

Signed-off-by: Sergey Organov <sorganov@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-12-21 13:47:31 -08:00

92 lines
2.1 KiB
C

#include "diff-merges.h"
#include "revision.h"
static void suppress(struct rev_info *revs)
{
revs->ignore_merges = 1;
revs->first_parent_merges = 0;
revs->combine_merges = 0;
revs->dense_combined_merges = 0;
}
/*
* Public functions. They are in the order they are called.
*/
void diff_merges_init_revs(struct rev_info *revs)
{
revs->ignore_merges = -1;
}
int diff_merges_parse_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")) {
suppress(revs);
} 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")) {
suppress(revs);
} else {
die(_("unknown value for --diff-merges: %s"), optarg);
}
} else
argcount = 0;
return argcount;
}
void diff_merges_suppress(struct rev_info *revs)
{
suppress(revs);
}
void diff_merges_default_to_first_parent(struct rev_info *revs)
{
if (revs->ignore_merges < 0) /* No -m */
revs->ignore_merges = 0;
}
void diff_merges_default_to_dense_combined(struct rev_info *revs)
{
if (revs->ignore_merges < 0) { /* No -m */
revs->ignore_merges = 0;
if (!revs->combine_merges) { /* No -c/--cc" */
revs->combine_merges = 1;
revs->dense_combined_merges = 1;
}
}
}
void diff_merges_setup_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");
}