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authorJunio C Hamano <gitster@pobox.com>2011-12-13 22:02:51 -0800
committerJunio C Hamano <gitster@pobox.com>2011-12-13 22:02:51 -0800
commitdf6246ed78d040f06f095dd62d8db07a0aa19a96 (patch)
treecf9da0c48aa9450471d5c09a659cc99a1d3e1159
parent8311158c66e0d83df950ea837fb1cb332c51f798 (diff)
parentea4f9685cb432caf357ad8af56a91877b6d04663 (diff)
downloadgit-df6246ed78d040f06f095dd62d8db07a0aa19a96.tar.gz
Merge branch 'nd/misc-cleanups' into maint
* nd/misc-cleanups: unpack_object_header_buffer(): clear the size field upon error tree_entry_interesting: make use of local pointer "item" tree_entry_interesting(): give meaningful names to return values read_directory_recursive: reduce one indentation level get_tree_entry(): do not call find_tree_entry() on an empty tree tree-walk.c: do not leak internal structure in tree_entry_len()
-rw-r--r--builtin/grep.c11
-rw-r--r--builtin/pack-objects.c2
-rw-r--r--dir.c50
-rw-r--r--list-objects.c9
-rw-r--r--sha1_file.c3
-rw-r--r--tree-diff.c22
-rw-r--r--tree-walk.c75
-rw-r--r--tree-walk.h18
-rw-r--r--tree.c11
-rw-r--r--unpack-trees.c6
10 files changed, 112 insertions, 95 deletions
diff --git a/builtin/grep.c b/builtin/grep.c
index 3d7329d78c..988ea1d332 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -557,18 +557,19 @@ static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int
static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
struct tree_desc *tree, struct strbuf *base, int tn_len)
{
- int hit = 0, match = 0;
+ int hit = 0;
+ enum interesting match = entry_not_interesting;
struct name_entry entry;
int old_baselen = base->len;
while (tree_entry(tree, &entry)) {
- int te_len = tree_entry_len(entry.path, entry.sha1);
+ int te_len = tree_entry_len(&entry);
- if (match != 2) {
+ if (match != all_entries_interesting) {
match = tree_entry_interesting(&entry, base, tn_len, pathspec);
- if (match < 0)
+ if (match == all_entries_not_interesting)
break;
- if (match == 0)
+ if (match == entry_not_interesting)
continue;
}
diff --git a/builtin/pack-objects.c b/builtin/pack-objects.c
index 824ecee20b..558cd34bcc 100644
--- a/builtin/pack-objects.c
+++ b/builtin/pack-objects.c
@@ -1015,7 +1015,7 @@ static void add_pbase_object(struct tree_desc *tree,
while (tree_entry(tree,&entry)) {
if (S_ISGITLINK(entry.mode))
continue;
- cmp = tree_entry_len(entry.path, entry.sha1) != cmplen ? 1 :
+ cmp = tree_entry_len(&entry) != cmplen ? 1 :
memcmp(name, entry.path, cmplen);
if (cmp > 0)
continue;
diff --git a/dir.c b/dir.c
index 6c0d782579..0a78d00b54 100644
--- a/dir.c
+++ b/dir.c
@@ -968,34 +968,34 @@ static int read_directory_recursive(struct dir_struct *dir,
{
DIR *fdir = opendir(*base ? base : ".");
int contents = 0;
+ struct dirent *de;
+ char path[PATH_MAX + 1];
- if (fdir) {
- struct dirent *de;
- char path[PATH_MAX + 1];
- memcpy(path, base, baselen);
-
- while ((de = readdir(fdir)) != NULL) {
- int len;
- switch (treat_path(dir, de, path, sizeof(path),
- baselen, simplify, &len)) {
- case path_recurse:
- contents += read_directory_recursive
- (dir, path, len, 0, simplify);
- continue;
- case path_ignored:
- continue;
- case path_handled:
- break;
- }
- contents++;
- if (check_only)
- goto exit_early;
- else
- dir_add_name(dir, path, len);
+ if (!fdir)
+ return 0;
+
+ memcpy(path, base, baselen);
+
+ while ((de = readdir(fdir)) != NULL) {
+ int len;
+ switch (treat_path(dir, de, path, sizeof(path),
+ baselen, simplify, &len)) {
+ case path_recurse:
+ contents += read_directory_recursive(dir, path, len, 0, simplify);
+ continue;
+ case path_ignored:
+ continue;
+ case path_handled:
+ break;
}
-exit_early:
- closedir(fdir);
+ contents++;
+ if (check_only)
+ goto exit_early;
+ else
+ dir_add_name(dir, path, len);
}
+exit_early:
+ closedir(fdir);
return contents;
}
diff --git a/list-objects.c b/list-objects.c
index 39d80c0175..3dd4a96019 100644
--- a/list-objects.c
+++ b/list-objects.c
@@ -71,7 +71,8 @@ static void process_tree(struct rev_info *revs,
struct tree_desc desc;
struct name_entry entry;
struct name_path me;
- int match = revs->diffopt.pathspec.nr == 0 ? 2 : 0;
+ enum interesting match = revs->diffopt.pathspec.nr == 0 ?
+ all_entries_interesting: entry_not_interesting;
int baselen = base->len;
if (!revs->tree_objects)
@@ -97,12 +98,12 @@ static void process_tree(struct rev_info *revs,
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
- if (match != 2) {
+ if (match != all_entries_interesting) {
match = tree_entry_interesting(&entry, base, 0,
&revs->diffopt.pathspec);
- if (match < 0)
+ if (match == all_entries_not_interesting)
break;
- if (match == 0)
+ if (match == entry_not_interesting)
continue;
}
diff --git a/sha1_file.c b/sha1_file.c
index 6dcae3882b..956422ba4a 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1267,7 +1267,8 @@ unsigned long unpack_object_header_buffer(const unsigned char *buf,
while (c & 0x80) {
if (len <= used || bitsizeof(long) <= shift) {
error("bad object header");
- return 0;
+ size = used = 0;
+ break;
}
c = buf[used++];
size += (c & 0x7f) << shift;
diff --git a/tree-diff.c b/tree-diff.c
index b3cc2e4753..7a51d091b5 100644
--- a/tree-diff.c
+++ b/tree-diff.c
@@ -21,8 +21,8 @@ static int compare_tree_entry(struct tree_desc *t1, struct tree_desc *t2,
sha1 = tree_entry_extract(t1, &path1, &mode1);
sha2 = tree_entry_extract(t2, &path2, &mode2);
- pathlen1 = tree_entry_len(path1, sha1);
- pathlen2 = tree_entry_len(path2, sha2);
+ pathlen1 = tree_entry_len(&t1->entry);
+ pathlen2 = tree_entry_len(&t2->entry);
cmp = base_name_compare(path1, pathlen1, mode1, path2, pathlen2, mode2);
if (cmp < 0) {
show_entry(opt, "-", t1, base);
@@ -64,14 +64,14 @@ static int compare_tree_entry(struct tree_desc *t1, struct tree_desc *t2,
static void show_tree(struct diff_options *opt, const char *prefix,
struct tree_desc *desc, struct strbuf *base)
{
- int match = 0;
+ enum interesting match = entry_not_interesting;
for (; desc->size; update_tree_entry(desc)) {
- if (match != 2) {
+ if (match != all_entries_interesting) {
match = tree_entry_interesting(&desc->entry, base, 0,
&opt->pathspec);
- if (match < 0)
+ if (match == all_entries_not_interesting)
break;
- if (match == 0)
+ if (match == entry_not_interesting)
continue;
}
show_entry(opt, prefix, desc, base);
@@ -85,7 +85,7 @@ static void show_entry(struct diff_options *opt, const char *prefix,
unsigned mode;
const char *path;
const unsigned char *sha1 = tree_entry_extract(desc, &path, &mode);
- int pathlen = tree_entry_len(path, sha1);
+ int pathlen = tree_entry_len(&desc->entry);
int old_baselen = base->len;
strbuf_add(base, path, pathlen);
@@ -114,12 +114,13 @@ static void show_entry(struct diff_options *opt, const char *prefix,
}
static void skip_uninteresting(struct tree_desc *t, struct strbuf *base,
- struct diff_options *opt, int *match)
+ struct diff_options *opt,
+ enum interesting *match)
{
while (t->size) {
*match = tree_entry_interesting(&t->entry, base, 0, &opt->pathspec);
if (*match) {
- if (*match < 0)
+ if (*match == all_entries_not_interesting)
t->size = 0;
break;
}
@@ -132,7 +133,8 @@ int diff_tree(struct tree_desc *t1, struct tree_desc *t2,
{
struct strbuf base;
int baselen = strlen(base_str);
- int t1_match = 0, t2_match = 0;
+ enum interesting t1_match = entry_not_interesting;
+ enum interesting t2_match = entry_not_interesting;
/* Enable recursion indefinitely */
opt->pathspec.recursive = DIFF_OPT_TST(opt, RECURSIVE);
diff --git a/tree-walk.c b/tree-walk.c
index 418107ec83..f82dba6a1f 100644
--- a/tree-walk.c
+++ b/tree-walk.c
@@ -116,7 +116,7 @@ void setup_traverse_info(struct traverse_info *info, const char *base)
char *make_traverse_path(char *path, const struct traverse_info *info, const struct name_entry *n)
{
- int len = tree_entry_len(n->path, n->sha1);
+ int len = tree_entry_len(n);
int pathlen = info->pathlen;
path[pathlen + len] = 0;
@@ -126,7 +126,7 @@ char *make_traverse_path(char *path, const struct traverse_info *info, const str
break;
path[--pathlen] = '/';
n = &info->name;
- len = tree_entry_len(n->path, n->sha1);
+ len = tree_entry_len(n);
info = info->prev;
pathlen -= len;
}
@@ -253,7 +253,7 @@ static void extended_entry_extract(struct tree_desc_x *t,
* The caller wants "first" from this tree, or nothing.
*/
path = a->path;
- len = tree_entry_len(a->path, a->sha1);
+ len = tree_entry_len(a);
switch (check_entry_match(first, first_len, path, len)) {
case -1:
entry_clear(a);
@@ -271,7 +271,7 @@ static void extended_entry_extract(struct tree_desc_x *t,
while (probe.size) {
entry_extract(&probe, a);
path = a->path;
- len = tree_entry_len(a->path, a->sha1);
+ len = tree_entry_len(a);
switch (check_entry_match(first, first_len, path, len)) {
case -1:
entry_clear(a);
@@ -362,7 +362,7 @@ int traverse_trees(int n, struct tree_desc *t, struct traverse_info *info)
e = entry + i;
if (!e->path)
continue;
- len = tree_entry_len(e->path, e->sha1);
+ len = tree_entry_len(e);
if (!first) {
first = e->path;
first_len = len;
@@ -381,7 +381,7 @@ int traverse_trees(int n, struct tree_desc *t, struct traverse_info *info)
/* Cull the ones that are not the earliest */
if (!e->path)
continue;
- len = tree_entry_len(e->path, e->sha1);
+ len = tree_entry_len(e);
if (name_compare(e->path, len, first, first_len))
entry_clear(e);
}
@@ -434,8 +434,8 @@ static int find_tree_entry(struct tree_desc *t, const char *name, unsigned char
int entrylen, cmp;
sha1 = tree_entry_extract(t, &entry, mode);
+ entrylen = tree_entry_len(&t->entry);
update_tree_entry(t);
- entrylen = tree_entry_len(entry, sha1);
if (entrylen > namelen)
continue;
cmp = memcmp(name, entry, entrylen);
@@ -465,7 +465,6 @@ int get_tree_entry(const unsigned char *tree_sha1, const char *name, unsigned ch
int retval;
void *tree;
unsigned long size;
- struct tree_desc t;
unsigned char root[20];
tree = read_object_with_reference(tree_sha1, tree_type, &size, root);
@@ -478,8 +477,13 @@ int get_tree_entry(const unsigned char *tree_sha1, const char *name, unsigned ch
return 0;
}
- init_tree_desc(&t, tree, size);
- retval = find_tree_entry(&t, name, sha1, mode);
+ if (!size) {
+ retval = -1;
+ } else {
+ struct tree_desc t;
+ init_tree_desc(&t, tree, size);
+ retval = find_tree_entry(&t, name, sha1, mode);
+ }
free(tree);
return retval;
}
@@ -573,30 +577,26 @@ static int match_dir_prefix(const char *base,
*
* Pre-condition: either baselen == base_offset (i.e. empty path)
* or base[baselen-1] == '/' (i.e. with trailing slash).
- *
- * Return:
- * - 2 for "yes, and all subsequent entries will be"
- * - 1 for yes
- * - zero for no
- * - negative for "no, and no subsequent entries will be either"
*/
-int tree_entry_interesting(const struct name_entry *entry,
- struct strbuf *base, int base_offset,
- const struct pathspec *ps)
+enum interesting tree_entry_interesting(const struct name_entry *entry,
+ struct strbuf *base, int base_offset,
+ const struct pathspec *ps)
{
int i;
int pathlen, baselen = base->len - base_offset;
- int never_interesting = ps->has_wildcard ? 0 : -1;
+ int never_interesting = ps->has_wildcard ?
+ entry_not_interesting : all_entries_not_interesting;
if (!ps->nr) {
if (!ps->recursive || ps->max_depth == -1)
- return 2;
- return !!within_depth(base->buf + base_offset, baselen,
- !!S_ISDIR(entry->mode),
- ps->max_depth);
+ return all_entries_interesting;
+ return within_depth(base->buf + base_offset, baselen,
+ !!S_ISDIR(entry->mode),
+ ps->max_depth) ?
+ entry_interesting : entry_not_interesting;
}
- pathlen = tree_entry_len(entry->path, entry->sha1);
+ pathlen = tree_entry_len(entry);
for (i = ps->nr - 1; i >= 0; i--) {
const struct pathspec_item *item = ps->items+i;
@@ -610,12 +610,13 @@ int tree_entry_interesting(const struct name_entry *entry,
goto match_wildcards;
if (!ps->recursive || ps->max_depth == -1)
- return 2;
+ return all_entries_interesting;
- return !!within_depth(base_str + matchlen + 1,
- baselen - matchlen - 1,
- !!S_ISDIR(entry->mode),
- ps->max_depth);
+ return within_depth(base_str + matchlen + 1,
+ baselen - matchlen - 1,
+ !!S_ISDIR(entry->mode),
+ ps->max_depth) ?
+ entry_interesting : entry_not_interesting;
}
/* Either there must be no base, or the base must match. */
@@ -623,25 +624,25 @@ int tree_entry_interesting(const struct name_entry *entry,
if (match_entry(entry, pathlen,
match + baselen, matchlen - baselen,
&never_interesting))
- return 1;
+ return entry_interesting;
- if (ps->items[i].use_wildcard) {
+ if (item->use_wildcard) {
if (!fnmatch(match + baselen, entry->path, 0))
- return 1;
+ return entry_interesting;
/*
* Match all directories. We'll try to
* match files later on.
*/
if (ps->recursive && S_ISDIR(entry->mode))
- return 1;
+ return entry_interesting;
}
continue;
}
match_wildcards:
- if (!ps->items[i].use_wildcard)
+ if (!item->use_wildcard)
continue;
/*
@@ -653,7 +654,7 @@ match_wildcards:
if (!fnmatch(match, base->buf + base_offset, 0)) {
strbuf_setlen(base, base_offset + baselen);
- return 1;
+ return entry_interesting;
}
strbuf_setlen(base, base_offset + baselen);
@@ -662,7 +663,7 @@ match_wildcards:
* later on.
*/
if (ps->recursive && S_ISDIR(entry->mode))
- return 1;
+ return entry_interesting;
}
return never_interesting; /* No matches */
}
diff --git a/tree-walk.h b/tree-walk.h
index 0089581e1d..2bf0db9814 100644
--- a/tree-walk.h
+++ b/tree-walk.h
@@ -20,9 +20,9 @@ static inline const unsigned char *tree_entry_extract(struct tree_desc *desc, co
return desc->entry.sha1;
}
-static inline int tree_entry_len(const char *name, const unsigned char *sha1)
+static inline int tree_entry_len(const struct name_entry *ne)
{
- return (const char *)sha1 - name - 1;
+ return (const char *)ne->sha1 - ne->path - 1;
}
void update_tree_entry(struct tree_desc *);
@@ -58,9 +58,19 @@ extern void setup_traverse_info(struct traverse_info *info, const char *base);
static inline int traverse_path_len(const struct traverse_info *info, const struct name_entry *n)
{
- return info->pathlen + tree_entry_len(n->path, n->sha1);
+ return info->pathlen + tree_entry_len(n);
}
-extern int tree_entry_interesting(const struct name_entry *, struct strbuf *, int, const struct pathspec *ps);
+/* in general, positive means "kind of interesting" */
+enum interesting {
+ all_entries_not_interesting = -1, /* no, and no subsequent entries will be either */
+ entry_not_interesting = 0,
+ entry_interesting = 1,
+ all_entries_interesting = 2 /* yes, and all subsequent entries will be */
+};
+
+extern enum interesting tree_entry_interesting(const struct name_entry *,
+ struct strbuf *, int,
+ const struct pathspec *ps);
#endif
diff --git a/tree.c b/tree.c
index 698ecf7af1..676e9f710c 100644
--- a/tree.c
+++ b/tree.c
@@ -52,7 +52,8 @@ static int read_tree_1(struct tree *tree, struct strbuf *base,
struct tree_desc desc;
struct name_entry entry;
unsigned char sha1[20];
- int len, retval = 0, oldlen = base->len;
+ int len, oldlen = base->len;
+ enum interesting retval = entry_not_interesting;
if (parse_tree(tree))
return -1;
@@ -60,11 +61,11 @@ static int read_tree_1(struct tree *tree, struct strbuf *base,
init_tree_desc(&desc, tree->buffer, tree->size);
while (tree_entry(&desc, &entry)) {
- if (retval != 2) {
+ if (retval != all_entries_interesting) {
retval = tree_entry_interesting(&entry, base, 0, pathspec);
- if (retval < 0)
+ if (retval == all_entries_not_interesting)
break;
- if (retval == 0)
+ if (retval == entry_not_interesting)
continue;
}
@@ -99,7 +100,7 @@ static int read_tree_1(struct tree *tree, struct strbuf *base,
else
continue;
- len = tree_entry_len(entry.path, entry.sha1);
+ len = tree_entry_len(&entry);
strbuf_add(base, entry.path, len);
strbuf_addch(base, '/');
retval = read_tree_1(lookup_tree(sha1),
diff --git a/unpack-trees.c b/unpack-trees.c
index 8282f5e5f6..7c9ecf665d 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -446,7 +446,7 @@ static int traverse_trees_recursive(int n, unsigned long dirmask,
newinfo.prev = info;
newinfo.pathspec = info->pathspec;
newinfo.name = *p;
- newinfo.pathlen += tree_entry_len(p->path, p->sha1) + 1;
+ newinfo.pathlen += tree_entry_len(p) + 1;
newinfo.conflicts |= df_conflicts;
for (i = 0; i < n; i++, dirmask >>= 1) {
@@ -495,7 +495,7 @@ static int do_compare_entry(const struct cache_entry *ce, const struct traverse_
ce_len -= pathlen;
ce_name = ce->name + pathlen;
- len = tree_entry_len(n->path, n->sha1);
+ len = tree_entry_len(n);
return df_name_compare(ce_name, ce_len, S_IFREG, n->path, len, n->mode);
}
@@ -626,7 +626,7 @@ static int find_cache_pos(struct traverse_info *info,
struct unpack_trees_options *o = info->data;
struct index_state *index = o->src_index;
int pfxlen = info->pathlen;
- int p_len = tree_entry_len(p->path, p->sha1);
+ int p_len = tree_entry_len(p);
for (pos = o->cache_bottom; pos < index->cache_nr; pos++) {
struct cache_entry *ce = index->cache[pos];