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authorJunio C Hamano <gitster@pobox.com>2011-05-31 17:57:32 (GMT)
committerJunio C Hamano <gitster@pobox.com>2011-05-31 17:57:32 (GMT)
commit2d11f21c365821ccba1e093f22b99ad71b955f21 (patch)
tree1ecbe232f12904520838ab4adff6aa70d5ba6e80 /diff-lib.c
parent28b9264dd6cbadcef8b3e48c24ffcb2893b668b3 (diff)
parent5b42477b59886a85d4b49a60313f9b9d4a0d576f (diff)
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Merge remote-tracking branch 'ko/maint' into jc/diff-index-quick-exit-early
* ko/maint: (4352 commits) git-submodule.sh: separate parens by a space to avoid confusing some shells Documentation/technical/api-diff.txt: correct name of diff_unmerge() read_gitfile_gently: use ssize_t to hold read result remove tests of always-false condition rerere.c: diagnose a corrupt MERGE_RR when hitting EOF between TAB and '\0' Git 1.7.5.3 init/clone: remove short option -L and document --separate-git-dir do not read beyond end of malloc'd buffer git-svn: Fix git svn log --show-commit Git 1.7.5.2 provide a copy of the LGPLv2.1 test core.gitproxy configuration copy_gecos: fix not adding nlen to len when processing "&" Update draft release notes to 1.7.5.2 Documentation/git-fsck.txt: fix typo: unreadable -> unreachable send-pack: avoid deadlock on git:// push with failed pack-objects connect: let callers know if connection is a socket connect: treat generic proxy processes like ssh processes sideband_demux(): fix decl-after-stmt t3503: test cherry picking and reverting root commits ... Conflicts: diff.c
Diffstat (limited to 'diff-lib.c')
-rw-r--r--diff-lib.c141
1 files changed, 78 insertions, 63 deletions
diff --git a/diff-lib.c b/diff-lib.c
index 869d8f0..9c29293 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -10,6 +10,7 @@
#include "cache-tree.h"
#include "unpack-trees.h"
#include "refs.h"
+#include "submodule.h"
/*
* diff-files
@@ -54,6 +55,33 @@ 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)) {
+ unsigned orig_flags = diffopt->flags;
+ if (!DIFF_OPT_TST(diffopt, OVERRIDE_SUBMODULE_CONFIG))
+ set_diffopt_flags_from_submodule_config(diffopt, ce->name);
+ if (DIFF_OPT_TST(diffopt, IGNORE_SUBMODULES))
+ changed = 0;
+ else if (!DIFF_OPT_TST(diffopt, IGNORE_DIRTY_SUBMODULES)
+ && (!changed || DIFF_OPT_TST(diffopt, DIRTY_SUBMODULES)))
+ *dirty_submodule = is_submodule_modified(ce->name, DIFF_OPT_TST(diffopt, IGNORE_UNTRACKED_IN_SUBMODULES));
+ diffopt->flags = orig_flags;
+ }
+ return changed;
+}
+
int run_diff_files(struct rev_info *revs, unsigned int option)
{
int entries, i;
@@ -72,15 +100,18 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
unsigned int oldmode, newmode;
struct cache_entry *ce = active_cache[i];
int changed;
+ unsigned dirty_submodule = 0;
if (diff_can_quit_early(&revs->diffopt))
break;
- if (!ce_path_match(ce, revs->prune_data))
+ if (!ce_path_match(ce, &revs->prune_data))
continue;
if (ce_stage(ce)) {
struct combine_diff_path *dpath;
+ struct diff_filepair *pair;
+ unsigned int wt_mode = 0;
int num_compare_stages = 0;
size_t path_len;
@@ -99,7 +130,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
changed = check_removed(ce, &st);
if (!changed)
- dpath->mode = ce_mode_from_stat(ce, st.st_mode);
+ wt_mode = ce_mode_from_stat(ce, st.st_mode);
else {
if (changed < 0) {
perror(ce->name);
@@ -107,7 +138,9 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
}
if (silent_on_removed)
continue;
+ wt_mode = 0;
}
+ dpath->mode = wt_mode;
while (i < entries) {
struct cache_entry *nce = active_cache[i];
@@ -153,15 +186,18 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
* Show the diff for the 'ce' if we found the one
* from the desired stage.
*/
- diff_unmerge(&revs->diffopt, ce->name, 0, null_sha1);
+ pair = diff_unmerge(&revs->diffopt, ce->name);
+ if (wt_mode)
+ pair->two->mode = wt_mode;
if (ce_stage(ce) != diff_unmerged_stage)
continue;
}
- if (ce_uptodate(ce))
+ if (ce_uptodate(ce) || ce_skip_worktree(ce))
continue;
- changed = check_removed(ce, &st);
+ /* If CE_VALID is set, don't look at workdir for file removal */
+ changed = (ce->ce_flags & CE_VALID) ? 0 : check_removed(ce, &st);
if (changed) {
if (changed < 0) {
perror(ce->name);
@@ -170,11 +206,12 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
if (silent_on_removed)
continue;
diff_addremove(&revs->diffopt, '-', ce->ce_mode,
- ce->sha1, ce->name);
+ ce->sha1, ce->name, 0);
continue;
}
- changed = ce_match_stat(ce, &st, ce_option);
- 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;
@@ -183,7 +220,7 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
newmode = ce_mode_from_stat(ce, st.st_mode);
diff_change(&revs->diffopt, oldmode, newmode,
ce->sha1, (changed ? null_sha1 : ce->sha1),
- ce->name);
+ ce->name, 0, dirty_submodule);
}
diffcore_std(&revs->diffopt);
@@ -199,16 +236,18 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
static void diff_index_show_file(struct rev_info *revs,
const char *prefix,
struct cache_entry *ce,
- const unsigned char *sha1, unsigned int mode)
+ const unsigned char *sha1, unsigned int mode,
+ unsigned dirty_submodule)
{
diff_addremove(&revs->diffopt, prefix[0], mode,
- sha1, ce->name);
+ sha1, ce->name, dirty_submodule);
}
static int get_stat_data(struct cache_entry *ce,
const unsigned char **sha1p,
unsigned int *modep,
- int cached, int match_missing)
+ int cached, int match_missing,
+ unsigned *dirty_submodule, struct diff_options *diffopt)
{
const unsigned char *sha1 = ce->sha1;
unsigned int mode = ce->ce_mode;
@@ -227,7 +266,8 @@ static int get_stat_data(struct cache_entry *ce,
}
return -1;
}
- changed = ce_match_stat(ce, &st, 0);
+ 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;
@@ -245,15 +285,17 @@ static void show_new_file(struct rev_info *revs,
{
const unsigned char *sha1;
unsigned int mode;
+ unsigned dirty_submodule = 0;
/*
* New file in the index: it might actually be different in
* the working copy.
*/
- if (get_stat_data(new, &sha1, &mode, cached, match_missing) < 0)
+ if (get_stat_data(new, &sha1, &mode, cached, match_missing,
+ &dirty_submodule, &revs->diffopt) < 0)
return;
- diff_index_show_file(revs, "+", new, sha1, mode);
+ diff_index_show_file(revs, "+", new, sha1, mode, dirty_submodule);
}
static int show_modified(struct rev_info *revs,
@@ -264,11 +306,13 @@ static int show_modified(struct rev_info *revs,
{
unsigned int mode, oldmode;
const unsigned char *sha1;
+ unsigned dirty_submodule = 0;
- if (get_stat_data(new, &sha1, &mode, cached, match_missing) < 0) {
+ if (get_stat_data(new, &sha1, &mode, cached, match_missing,
+ &dirty_submodule, &revs->diffopt) < 0) {
if (report_missing)
diff_index_show_file(revs, "-", old,
- old->sha1, old->ce_mode);
+ old->sha1, old->ce_mode, 0);
return -1;
}
@@ -298,32 +342,16 @@ 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;
diff_change(&revs->diffopt, oldmode, mode,
- old->sha1, sha1, old->name);
+ old->sha1, sha1, old->name, 0, dirty_submodule);
return 0;
}
/*
- * This turns all merge entries into "stage 3". That guarantees that
- * when we read in the new tree (into "stage 1"), we won't lose sight
- * of the fact that we had unmerged entries.
- */
-static void mark_merge_entries(void)
-{
- int i;
- for (i = 0; i < active_nr; i++) {
- struct cache_entry *ce = active_cache[i];
- if (!ce_stage(ce))
- continue;
- ce->ce_flags |= CE_STAGEMASK;
- }
-}
-
-/*
* This gets a mix of an existing index and a tree, one pathname entry
* at a time. The index entry may be a single stage-0 one, but it could
* also be multiple unmerged entries (in which case idx_pos/idx_nr will
@@ -336,6 +364,9 @@ static void do_oneway_diff(struct unpack_trees_options *o,
struct rev_info *revs = o->unpack_data;
int match_missing, cached;
+ /* if the entry is not checked out, don't examine work tree */
+ cached = o->index_only ||
+ (idx && ((idx->ce_flags & CE_VALID) || ce_skip_worktree(idx)));
/*
* Backward compatibility wart - "diff-index -m" does
* not mean "do not ignore merges", but "match_missing".
@@ -343,12 +374,12 @@ static void do_oneway_diff(struct unpack_trees_options *o,
* But with the revision flag parsing, that's found in
* "!revs->ignore_merges".
*/
- cached = o->index_only;
match_missing = !revs->ignore_merges;
if (cached && idx && ce_stage(idx)) {
- if (tree)
- diff_unmerge(&revs->diffopt, idx->name, idx->ce_mode, idx->sha1);
+ struct diff_filepair *pair;
+ pair = diff_unmerge(&revs->diffopt, idx->name);
+ fill_filespec(pair->one, idx->sha1, idx->ce_mode);
return;
}
@@ -364,7 +395,7 @@ static void do_oneway_diff(struct unpack_trees_options *o,
* Something removed from the tree?
*/
if (!idx) {
- diff_index_show_file(revs, "-", tree, tree->sha1, tree->ce_mode);
+ diff_index_show_file(revs, "-", tree, tree->sha1, tree->ce_mode, 0);
return;
}
@@ -372,21 +403,6 @@ static void do_oneway_diff(struct unpack_trees_options *o,
show_modified(revs, tree, idx, 1, cached, match_missing);
}
-static inline void skip_same_name(struct cache_entry *ce, struct unpack_trees_options *o)
-{
- int len = ce_namelen(ce);
- const struct index_state *index = o->src_index;
-
- while (o->pos < index->cache_nr) {
- struct cache_entry *next = index->cache[o->pos];
- if (len != ce_namelen(next))
- break;
- if (memcmp(ce->name, next->name, len))
- break;
- o->pos++;
- }
-}
-
/*
* The unpack_trees() interface is designed for merging, so
* the different source entries are designed primarily for
@@ -396,7 +412,7 @@ static inline void skip_same_name(struct cache_entry *ce, struct unpack_trees_op
* For diffing, the index is more important, and we only have a
* single tree.
*
- * We're supposed to return how many index entries we want to skip.
+ * We're supposed to advance o->pos to skip what we have already processed.
*
* This wrapper makes it all more readable, and takes care of all
* the fairly complex unpack_trees() semantic requirements, including
@@ -408,9 +424,6 @@ static int oneway_diff(struct cache_entry **src, struct unpack_trees_options *o)
struct cache_entry *tree = src[1];
struct rev_info *revs = o->unpack_data;
- if (idx && ce_stage(idx))
- skip_same_name(idx, o);
-
/*
* Unpack-trees generates a DF/conflict entry if
* there was a directory in the index and a tree
@@ -420,7 +433,7 @@ static int oneway_diff(struct cache_entry **src, struct unpack_trees_options *o)
if (tree == o->df_conflict_entry)
tree = NULL;
- if (ce_path_match(idx ? idx : tree, revs->prune_data))
+ if (ce_path_match(idx ? idx : tree, &revs->prune_data))
do_oneway_diff(o, idx, tree);
return 0;
@@ -434,8 +447,6 @@ int run_diff_index(struct rev_info *revs, int cached)
struct unpack_trees_options opts;
struct tree_desc t;
- mark_merge_entries();
-
ent = revs->pending.objects[0].item;
tree_name = revs->pending.objects[0].name;
tree = parse_tree_indirect(ent->sha1);
@@ -458,6 +469,7 @@ int run_diff_index(struct rev_info *revs, int cached)
exit(128);
diff_set_mnemonic_prefix(&revs->diffopt, "c/", cached ? "i/" : "w/");
+ diffcore_fix_diff_index(&revs->diffopt);
diffcore_std(&revs->diffopt);
diff_flush(&revs->diffopt);
return 0;
@@ -495,7 +507,7 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
active_nr = dst - active_cache;
init_revisions(&revs, NULL);
- revs.prune_data = opt->paths;
+ init_pathspec(&revs.prune_data, opt->pathspec.raw);
tree = parse_tree_indirect(tree_sha1);
if (!tree)
die("bad tree object %s", sha1_to_hex(tree_sha1));
@@ -519,9 +531,12 @@ 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;