mirrors/git
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

grep: drop pathspec_matches() in favor of tree_entry_interesting()

Browse Source 
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2010-12-17 19:45:33 +07:00
committed by Junio C Hamano
parent e5e062b6dc
commit 1376e50723
4 changed files with 30 additions and 125 deletions
Download Patch File Download Diff File Expand all files Collapse all files

125
builtin/grep.c
View File

@ -329,106 +329,6 @@ static int grep_config(const char *var, const char *value, void *cb)
return 0;
}
/*
* Return non-zero if max_depth is negative or path has no more then max_depth
* slashes.
*/
static int accept_subdir(const char *path, int max_depth)
{
if (max_depth < 0)
return 1;
while ((path = strchr(path, '/')) != NULL) {
max_depth--;
if (max_depth < 0)
return 0;
path++;
}
return 1;
}
/*
* Return non-zero if name is a subdirectory of match and is not too deep.
*/
static int is_subdir(const char *name, int namelen,
const char *match, int matchlen, int max_depth)
{
if (matchlen > namelen || strncmp(name, match, matchlen))
return 0;
if (name[matchlen] == '\0') /* exact match */
return 1;
if (!matchlen || match[matchlen-1] == '/' || name[matchlen] == '/')
return accept_subdir(name + matchlen + 1, max_depth);
return 0;
}
/*
* git grep pathspecs are somewhat different from diff-tree pathspecs;
* pathname wildcards are allowed.
*/
static int pathspec_matches(const char **paths, const char *name, int max_depth)
{
int namelen, i;
if (!paths || !*paths)
return accept_subdir(name, max_depth);
namelen = strlen(name);
for (i = 0; paths[i]; i++) {
const char *match = paths[i];
int matchlen = strlen(match);
const char *cp, *meta;
if (is_subdir(name, namelen, match, matchlen, max_depth))
return 1;
if (!fnmatch(match, name, 0))
return 1;
if (name[namelen-1] != '/')
continue;
/* We are being asked if the directory ("name") is worth
* descending into.
*
* Find the longest leading directory name that does
* not have metacharacter in the pathspec; the name
* we are looking at must overlap with that directory.
*/
for (cp = match, meta = NULL; cp - match < matchlen; cp++) {
char ch = *cp;
if (ch == '*' || ch == '[' || ch == '?') {
meta = cp;
break;
}
}
if (!meta)
meta = cp; /* fully literal */
if (namelen <= meta - match) {
/* Looking at "Documentation/" and
* the pattern says "Documentation/howto/", or
* "Documentation/diff*.txt". The name we
* have should match prefix.
*/
if (!memcmp(match, name, namelen))
return 1;
continue;
}
if (meta - match < namelen) {
/* Looking at "Documentation/howto/" and
* the pattern says "Documentation/h*";
* match up to "Do.../h"; this avoids descending
* into "Documentation/technical/".
*/
if (!memcmp(match, name, meta - match))
return 1;
continue;
}
}
return 0;
}
static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
{
void *data;
@ -621,25 +521,24 @@ 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;
int hit = 0, matched = 0;
struct name_entry entry;
int old_baselen = base->len;
while (tree_entry(tree, &entry)) {
int te_len = tree_entry_len(entry.path, entry.sha1);
if (matched != 2) {
matched = tree_entry_interesting(&entry, base, tn_len, pathspec);
if (matched == -1)
break; /* no more matches */
if (!matched)
continue;
}
strbuf_add(base, entry.path, te_len);
if (S_ISDIR(entry.mode))
/* Match "abc/" against pathspec to
* decide if we want to descend into "abc"
* directory.
*/
strbuf_addch(base, '/');
if (!pathspec_matches(pathspec->raw, base->buf + tn_len, opt->max_depth))
;
else if (S_ISREG(entry.mode)) {
if (S_ISREG(entry.mode)) {
hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len);
}
else if (S_ISDIR(entry.mode)) {
@ -652,6 +551,8 @@ static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
if (!data)
die("unable to read tree (%s)",
sha1_to_hex(entry.sha1));
strbuf_addch(base, '/');
init_tree_desc(&sub, data, size);
hit |= grep_tree(opt, pathspec, &sub, base, tn_len);
free(data);
@ -1058,6 +959,8 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
paths[1] = NULL;
}
init_pathspec(&pathspec, paths);
pathspec.max_depth = opt.max_depth;
pathspec.recursive = 1;
if (show_in_pager && (cached || list.nr))
die("--open-files-in-pager only works on the worktree");