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-rw-r--r--diff-lib.c50
1 files changed, 31 insertions, 19 deletions
diff --git a/diff-lib.c b/diff-lib.c
index d7e13cb177..c9f6e05bad 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -55,6 +55,27 @@ static int check_removed(const struct cache_entry *ce, struct stat *st)
return 0;
}
+/*
+ * Has a file changed or has a submodule new commits or a dirty work tree?
+ *
+ * Return 1 when changes are detected, 0 otherwise. If the DIRTY_SUBMODULES
+ * option is set, the caller does not only want to know if a submodule is
+ * modified at all but wants to know all the conditions that are met (new
+ * commits, untracked content and/or modified content).
+ */
+static int match_stat_with_submodule(struct diff_options *diffopt,
+ struct cache_entry *ce, struct stat *st,
+ unsigned ce_option, unsigned *dirty_submodule)
+{
+ int changed = ce_match_stat(ce, st, ce_option);
+ if (S_ISGITLINK(ce->ce_mode)
+ && !DIFF_OPT_TST(diffopt, IGNORE_SUBMODULES)
+ && (!changed || DIFF_OPT_TST(diffopt, DIRTY_SUBMODULES))) {
+ *dirty_submodule = is_submodule_modified(ce->name, DIFF_OPT_TST(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES));
+ }
+ return changed;
+}
+
int run_diff_files(struct rev_info *revs, unsigned int option)
{
int entries, i;
@@ -177,15 +198,9 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
ce->sha1, ce->name, 0);
continue;
}
- changed = ce_match_stat(ce, &st, ce_option);
- if (S_ISGITLINK(ce->ce_mode)
- && !DIFF_OPT_TST(&revs->diffopt, IGNORE_SUBMODULES)
- && (!changed || (revs->diffopt.output_format & DIFF_FORMAT_PATCH))
- && is_submodule_modified(ce->name)) {
- changed = 1;
- dirty_submodule = 1;
- }
- if (!changed) {
+ changed = match_stat_with_submodule(&revs->diffopt, ce, &st,
+ ce_option, &dirty_submodule);
+ if (!changed && !dirty_submodule) {
ce_mark_uptodate(ce);
if (!DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER))
continue;
@@ -240,14 +255,8 @@ static int get_stat_data(struct cache_entry *ce,
}
return -1;
}
- changed = ce_match_stat(ce, &st, 0);
- if (S_ISGITLINK(ce->ce_mode)
- && !DIFF_OPT_TST(diffopt, IGNORE_SUBMODULES)
- && (!changed || (diffopt->output_format & DIFF_FORMAT_PATCH))
- && is_submodule_modified(ce->name)) {
- changed = 1;
- *dirty_submodule = 1;
- }
+ changed = match_stat_with_submodule(diffopt, ce, &st,
+ 0, dirty_submodule);
if (changed) {
mode = ce_mode_from_stat(ce, st.st_mode);
sha1 = null_sha1;
@@ -322,7 +331,7 @@ static int show_modified(struct rev_info *revs,
}
oldmode = old->ce_mode;
- if (mode == oldmode && !hashcmp(sha1, old->sha1) &&
+ if (mode == oldmode && !hashcmp(sha1, old->sha1) && !dirty_submodule &&
!DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER))
return 0;
@@ -510,9 +519,12 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
int index_differs_from(const char *def, int diff_flags)
{
struct rev_info rev;
+ struct setup_revision_opt opt;
init_revisions(&rev, NULL);
- setup_revisions(0, NULL, &rev, def);
+ memset(&opt, 0, sizeof(opt));
+ opt.def = def;
+ setup_revisions(0, NULL, &rev, &opt);
DIFF_OPT_SET(&rev.diffopt, QUICK);
DIFF_OPT_SET(&rev.diffopt, EXIT_WITH_STATUS);
rev.diffopt.flags |= diff_flags;