static int grep_file(struct grep_opt *opt, const char *filename)
{
struct strbuf buf = STRBUF_INIT;
char *name;
if (opt->relative && opt->prefix_length)
quote_path_relative(filename, -1, &buf, opt->prefix);
else
strbuf_addstr(&buf, filename);
name = strbuf_detach(&buf, NULL);
#ifndef NO_PTHREADS
if (use_threads) {
grep_file_async(opt, name, filename);
return 0;
} else
#endif
{
int hit;
size_t sz;
void *data = load_file(filename, &sz);
if (!data)
hit = 0;
else
hit = grep_buffer(opt, name, data, sz);
free(data);
free(name);
return hit;
}
}
static int grep_file(struct grep_opt *opt, const char *filename)
{
struct stat st;
int i;
char *data;
size_t sz;
if (lstat(filename, &st) < 0) {
err_ret:
if (errno != ENOENT)
error("'%s': %s", filename, strerror(errno));
return 0;
}
if (!st.st_size)
return 0; /* empty file -- no grep hit */
if (!S_ISREG(st.st_mode))
return 0;
sz = xsize_t(st.st_size);
i = open(filename, O_RDONLY);
if (i < 0)
goto err_ret;
data = xmalloc(sz + 1);
if (st.st_size != read_in_full(i, data, sz)) {
error("'%s': short read %s", filename, strerror(errno));
close(i);
free(data);
return 0;
}
close(i);
if (opt->relative && opt->prefix_length)
filename += opt->prefix_length;
i = grep_buffer(opt, filename, data, sz);
free(data);
return i;
}
static int commit_match(struct commit *commit, struct rev_info *opt)
{
if (!opt->grep_filter.pattern_list)
return 1;
return grep_buffer(&opt->grep_filter,
NULL, /* we say nothing, not even filename */
commit->buffer, strlen(commit->buffer));
}
static void *run(void *arg)
{
int hit = 0;
struct grep_opt *opt = arg;
while (1) {
struct work_item *w = get_work();
if (!w)
break;
if (skip_binary(opt, (const char *)w->identifier))
continue;
opt->output_priv = w;
if (w->type == WORK_SHA1) {
unsigned long sz;
void* data = load_sha1(w->identifier, &sz, w->name);
if (data) {
hit |= grep_buffer(opt, w->name, data, sz);
free(data);
}
} else if (w->type == WORK_FILE) {
size_t sz;
void* data = load_file(w->identifier, &sz);
if (data) {
hit |= grep_buffer(opt, w->name, data, sz);
free(data);
}
} else {
assert(0);
}
work_done(w);
}
free_grep_patterns(arg);
free(arg);
return (void*) (intptr_t) hit;
}
static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
const char *filename, int tree_name_len)
{
struct strbuf pathbuf = STRBUF_INIT;
char *name;
if (opt->relative && opt->prefix_length) {
quote_path_relative(filename + tree_name_len, -1, &pathbuf,
opt->prefix);
strbuf_insert(&pathbuf, 0, filename, tree_name_len);
} else {
strbuf_addstr(&pathbuf, filename);
}
name = strbuf_detach(&pathbuf, NULL);
#ifndef NO_PTHREADS
if (use_threads) {
grep_sha1_async(opt, name, sha1);
return 0;
} else
#endif
{
int hit;
unsigned long sz;
void *data = load_sha1(sha1, &sz, name);
if (!data)
hit = 0;
else
hit = grep_buffer(opt, name, data, sz);
free(data);
free(name);
return hit;
}
}
static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name, int tree_name_len)
{
unsigned long size;
char *data;
enum object_type type;
char *to_free = NULL;
int hit;
data = read_sha1_file(sha1, &type, &size);
if (!data) {
error("'%s': unable to read %s", name, sha1_to_hex(sha1));
return 0;
}
if (opt->relative && opt->prefix_length) {
static char name_buf[PATH_MAX];
char *cp;
int name_len = strlen(name) - opt->prefix_length + 1;
if (!tree_name_len)
name += opt->prefix_length;
else {
if (ARRAY_SIZE(name_buf) <= name_len)
cp = to_free = xmalloc(name_len);
else
cp = name_buf;
memcpy(cp, name, tree_name_len);
strcpy(cp + tree_name_len,
name + tree_name_len + opt->prefix_length);
name = cp;
}
}
hit = grep_buffer(opt, name, data, size);
free(data);
free(to_free);
return hit;
}