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-rw-r--r--diff-lib.c86
1 files changed, 66 insertions, 20 deletions
diff --git a/diff-lib.c b/diff-lib.c
index 52dbac34a4..069e4507ae 100644
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -10,6 +10,7 @@
#include "cache-tree.h"
#include "path-list.h"
#include "unpack-trees.h"
+#include "refs.h"
/*
* diff-files
@@ -333,6 +334,26 @@ int run_diff_files_cmd(struct rev_info *revs, int argc, const char **argv)
}
return run_diff_files(revs, options);
}
+/*
+ * See if work tree has an entity that can be staged. Return 0 if so,
+ * return 1 if not and return -1 if error.
+ */
+static int check_work_tree_entity(const struct cache_entry *ce, struct stat *st, char *symcache)
+{
+ if (lstat(ce->name, st) < 0) {
+ if (errno != ENOENT && errno != ENOTDIR)
+ return -1;
+ return 1;
+ }
+ if (has_symlink_leading_path(ce->name, symcache))
+ return 1;
+ if (S_ISDIR(st->st_mode)) {
+ unsigned char sub[20];
+ if (resolve_gitlink_ref(ce->name, "HEAD", sub))
+ return 1;
+ }
+ return 0;
+}
int run_diff_files(struct rev_info *revs, unsigned int option)
{
@@ -341,10 +362,12 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
int silent_on_removed = option & DIFF_SILENT_ON_REMOVED;
unsigned ce_option = ((option & DIFF_RACY_IS_MODIFIED)
? CE_MATCH_RACY_IS_DIRTY : 0);
+ char symcache[PATH_MAX];
if (diff_unmerged_stage < 0)
diff_unmerged_stage = 2;
entries = active_nr;
+ symcache[0] = '\0';
for (i = 0; i < entries; i++) {
struct stat st;
unsigned int oldmode, newmode;
@@ -376,16 +399,17 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
memset(&(dpath->parent[0]), 0,
sizeof(struct combine_diff_parent)*5);
- if (lstat(ce->name, &st) < 0) {
- if (errno != ENOENT && errno != ENOTDIR) {
+ changed = check_work_tree_entity(ce, &st, symcache);
+ if (!changed)
+ dpath->mode = ce_mode_from_stat(ce, st.st_mode);
+ else {
+ if (changed < 0) {
perror(ce->name);
continue;
}
if (silent_on_removed)
continue;
}
- else
- dpath->mode = ce_mode_from_stat(ce, st.st_mode);
while (i < entries) {
struct cache_entry *nce = active_cache[i];
@@ -438,8 +462,10 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
if (ce_uptodate(ce))
continue;
- if (lstat(ce->name, &st) < 0) {
- if (errno != ENOENT && errno != ENOTDIR) {
+
+ changed = check_work_tree_entity(ce, &st, symcache);
+ if (changed) {
+ if (changed < 0) {
perror(ce->name);
continue;
}
@@ -468,6 +494,11 @@ int run_diff_files(struct rev_info *revs, unsigned int option)
* diff-index
*/
+struct oneway_unpack_data {
+ struct rev_info *revs;
+ char symcache[PATH_MAX];
+};
+
/* A file entry went away or appeared */
static void diff_index_show_file(struct rev_info *revs,
const char *prefix,
@@ -481,7 +512,8 @@ static void diff_index_show_file(struct rev_info *revs,
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,
+ struct oneway_unpack_data *cbdata)
{
const unsigned char *sha1 = ce->sha1;
unsigned int mode = ce->ce_mode;
@@ -489,8 +521,11 @@ static int get_stat_data(struct cache_entry *ce,
if (!cached) {
int changed;
struct stat st;
- if (lstat(ce->name, &st) < 0) {
- if (errno == ENOENT && match_missing) {
+ changed = check_work_tree_entity(ce, &st, cbdata->symcache);
+ if (changed < 0)
+ return -1;
+ else if (changed) {
+ if (match_missing) {
*sha1p = sha1;
*modep = mode;
return 0;
@@ -509,23 +544,25 @@ static int get_stat_data(struct cache_entry *ce,
return 0;
}
-static void show_new_file(struct rev_info *revs,
+static void show_new_file(struct oneway_unpack_data *cbdata,
struct cache_entry *new,
int cached, int match_missing)
{
const unsigned char *sha1;
unsigned int mode;
+ struct rev_info *revs = cbdata->revs;
- /* New file in the index: it might actually be different in
+ /*
+ * 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, cbdata) < 0)
return;
diff_index_show_file(revs, "+", new, sha1, mode);
}
-static int show_modified(struct rev_info *revs,
+static int show_modified(struct oneway_unpack_data *cbdata,
struct cache_entry *old,
struct cache_entry *new,
int report_missing,
@@ -533,8 +570,9 @@ static int show_modified(struct rev_info *revs,
{
unsigned int mode, oldmode;
const unsigned char *sha1;
+ struct rev_info *revs = cbdata->revs;
- if (get_stat_data(new, &sha1, &mode, cached, match_missing) < 0) {
+ if (get_stat_data(new, &sha1, &mode, cached, match_missing, cbdata) < 0) {
if (report_missing)
diff_index_show_file(revs, "-", old,
old->sha1, old->ce_mode);
@@ -602,7 +640,8 @@ static void do_oneway_diff(struct unpack_trees_options *o,
struct cache_entry *idx,
struct cache_entry *tree)
{
- struct rev_info *revs = o->unpack_data;
+ struct oneway_unpack_data *cbdata = o->unpack_data;
+ struct rev_info *revs = cbdata->revs;
int match_missing, cached;
/*
@@ -625,7 +664,7 @@ static void do_oneway_diff(struct unpack_trees_options *o,
* Something added to the tree?
*/
if (!tree) {
- show_new_file(revs, idx, cached, match_missing);
+ show_new_file(cbdata, idx, cached, match_missing);
return;
}
@@ -638,7 +677,7 @@ static void do_oneway_diff(struct unpack_trees_options *o,
}
/* Show difference between old and new */
- show_modified(revs, tree, idx, 1, cached, match_missing);
+ show_modified(cbdata, tree, idx, 1, cached, match_missing);
}
static inline void skip_same_name(struct cache_entry *ce, struct unpack_trees_options *o)
@@ -675,7 +714,8 @@ static int oneway_diff(struct cache_entry **src, struct unpack_trees_options *o)
{
struct cache_entry *idx = src[0];
struct cache_entry *tree = src[1];
- struct rev_info *revs = o->unpack_data;
+ struct oneway_unpack_data *cbdata = o->unpack_data;
+ struct rev_info *revs = cbdata->revs;
if (idx && ce_stage(idx))
skip_same_name(idx, o);
@@ -702,6 +742,7 @@ int run_diff_index(struct rev_info *revs, int cached)
const char *tree_name;
struct unpack_trees_options opts;
struct tree_desc t;
+ struct oneway_unpack_data unpack_cb;
mark_merge_entries();
@@ -711,12 +752,14 @@ int run_diff_index(struct rev_info *revs, int cached)
if (!tree)
return error("bad tree object %s", tree_name);
+ unpack_cb.revs = revs;
+ unpack_cb.symcache[0] = '\0';
memset(&opts, 0, sizeof(opts));
opts.head_idx = 1;
opts.index_only = cached;
opts.merge = 1;
opts.fn = oneway_diff;
- opts.unpack_data = revs;
+ opts.unpack_data = &unpack_cb;
opts.src_index = &the_index;
opts.dst_index = NULL;
@@ -738,6 +781,7 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
struct cache_entry *last = NULL;
struct unpack_trees_options opts;
struct tree_desc t;
+ struct oneway_unpack_data unpack_cb;
/*
* This is used by git-blame to run diff-cache internally;
@@ -766,12 +810,14 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
if (!tree)
die("bad tree object %s", sha1_to_hex(tree_sha1));
+ unpack_cb.revs = &revs;
+ unpack_cb.symcache[0] = '\0';
memset(&opts, 0, sizeof(opts));
opts.head_idx = 1;
opts.index_only = 1;
opts.merge = 1;
opts.fn = oneway_diff;
- opts.unpack_data = &revs;
+ opts.unpack_data = &unpack_cb;
opts.src_index = &the_index;
opts.dst_index = &the_index;
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-12 19:24:28 +0000