#include "cache-tree.h"
#include "path-list.h"
#include "unpack-trees.h"
+#include "refs.h"
/*
* diff-files
DIFF_OPT_SET(&revs->diffopt, EXIT_WITH_STATUS);
break;
}
+ if (nongit && argc != i + 2)
+ die("git diff [--no-index] takes two paths");
+
if (argc != i + 2 || (!is_outside_repo(argv[i + 1], nongit, prefix) &&
!is_outside_repo(argv[i], nongit, prefix)))
return -1;
return run_diff_files(revs, options);
}
+/*
+ * Has the work tree entity been removed?
+ *
+ * Return 1 if it was removed from the work tree, 0 if an entity to be
+ * compared with the cache entry ce still exists (the latter includes
+ * the case where a directory that is not a submodule repository
+ * exists for ce that is a submodule -- it is a submodule that is not
+ * checked out). Return negative for an error.
+ */
+static int check_removed(const struct cache_entry *ce, struct stat *st)
+{
+ if (lstat(ce->name, st) < 0) {
+ if (errno != ENOENT && errno != ENOTDIR)
+ return -1;
+ return 1;
+ }
+ if (has_symlink_leading_path(ce_namelen(ce), ce->name))
+ return 1;
+ if (S_ISDIR(st->st_mode)) {
+ unsigned char sub[20];
+
+ /*
+ * If ce is already a gitlink, we can have a plain
+ * directory (i.e. the submodule is not checked out),
+ * or a checked out submodule. Either case this is not
+ * a case where something was removed from the work tree,
+ * so we will return 0.
+ *
+ * Otherwise, if the directory is not a submodule
+ * repository, that means ce which was a blob turned into
+ * a directory --- the blob was removed!
+ */
+ if (!S_ISGITLINK(ce->ce_mode) &&
+ resolve_gitlink_ref(ce->name, "HEAD", sub))
+ return 1;
+ }
+ return 0;
+}
+
int run_diff_files(struct rev_info *revs, unsigned int option)
{
int entries, i;
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;
memset(&(dpath->parent[0]), 0,
sizeof(struct combine_diff_parent)*5);
- if (lstat(ce->name, &st) < 0) {
- if (errno != ENOENT && errno != ENOTDIR) {
+ changed = check_removed(ce, &st);
+ 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];
if (ce_uptodate(ce))
continue;
- if (lstat(ce->name, &st) < 0) {
- if (errno != ENOENT && errno != ENOTDIR) {
+
+ changed = check_removed(ce, &st);
+ if (changed) {
+ if (changed < 0) {
perror(ce->name);
continue;
}
continue;
}
changed = ce_match_stat(ce, &st, ce_option);
- if (!changed && !DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER))
- continue;
+ if (!changed) {
+ ce_mark_uptodate(ce);
+ if (!DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER))
+ continue;
+ }
oldmode = ce->ce_mode;
newmode = ce_mode_from_stat(ce, st.st_mode);
diff_change(&revs->diffopt, oldmode, newmode,
* 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,
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;
if (!cached) {
int changed;
struct stat st;
- if (lstat(ce->name, &st) < 0) {
- if (errno == ENOENT && match_missing) {
+ changed = check_removed(ce, &st);
+ if (changed < 0)
+ return -1;
+ else if (changed) {
+ if (match_missing) {
*sha1p = sha1;
*modep = mode;
return 0;
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,
{
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);
*/
static void do_oneway_diff(struct unpack_trees_options *o,
struct cache_entry *idx,
- struct cache_entry *tree,
- int idx_pos, int idx_nr)
+ 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;
/*
* Something added to the tree?
*/
if (!tree) {
- show_new_file(revs, idx, cached, match_missing);
+ show_new_file(cbdata, idx, cached, match_missing);
return;
}
}
/* Show difference between old and new */
- show_modified(revs, tree, idx, 1, cached, match_missing);
+ show_modified(cbdata, tree, idx, 1, cached, match_missing);
}
-/*
- * Count how many index entries go with the first one
- */
-static inline int count_skip(const struct cache_entry *src, int pos)
+static inline void skip_same_name(struct cache_entry *ce, struct unpack_trees_options *o)
{
- int skip = 1;
-
- /* We can only have multiple entries if the first one is not stage-0 */
- if (ce_stage(src)) {
- struct cache_entry **p = active_cache + pos;
- int namelen = ce_namelen(src);
-
- for (;;) {
- const struct cache_entry *ce;
- pos++;
- if (pos >= active_nr)
- break;
- ce = *++p;
- if (ce_namelen(ce) != namelen)
- break;
- if (memcmp(ce->name, src->name, namelen))
- break;
- skip++;
- }
+ 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++;
}
- return skip;
}
/*
* the fairly complex unpack_trees() semantic requirements, including
* the skipping, the path matching, the type conflict cases etc.
*/
-static int oneway_diff(struct cache_entry **src,
- struct unpack_trees_options *o,
- int index_pos)
+static int oneway_diff(struct cache_entry **src, struct unpack_trees_options *o)
{
- int skip = 0;
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 (index_pos >= 0)
- skip = count_skip(idx, index_pos);
+ if (idx && ce_stage(idx))
+ skip_same_name(idx, o);
/*
* Unpack-trees generates a DF/conflict entry if
tree = NULL;
if (ce_path_match(idx ? idx : tree, revs->prune_data))
- do_oneway_diff(o, idx, tree, index_pos, skip);
+ do_oneway_diff(o, idx, tree);
- return skip;
+ return 0;
}
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();
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;
init_tree_desc(&t, tree->buffer, tree->size);
if (unpack_trees(1, &t, &opts))
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;
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;
init_tree_desc(&t, tree->buffer, tree->size);
if (unpack_trees(1, &t, &opts))