mirror of
https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
![Michał Kiedrowicz](/assets/img/avatar_default.png)
It is useful to grep directories non-recursively, e.g. when one wants to look for all files in the toplevel directory, but not in any subdirectory, or in Documentation/, but not in Documentation/technical/. This patch adds support for --max-depth <depth> option to git-grep. If it is given, git-grep descends at most <depth> levels of directories below paths specified on the command line. Note that if path specified on command line contains wildcards, this option makes no sense, e.g. $ git grep -l --max-depth 0 GNU -- 'contrib/*' (note the quotes) will search all files in contrib/, even in subdirectories, because '*' matches all files. Documentation updates, bash-completion and simple test cases are also provided. Signed-off-by: Michał Kiedrowicz <michal.kiedrowicz@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
904 lines
23 KiB
C
904 lines
23 KiB
C
/*
|
|
* Builtin "git grep"
|
|
*
|
|
* Copyright (c) 2006 Junio C Hamano
|
|
*/
|
|
#include "cache.h"
|
|
#include "blob.h"
|
|
#include "tree.h"
|
|
#include "commit.h"
|
|
#include "tag.h"
|
|
#include "tree-walk.h"
|
|
#include "builtin.h"
|
|
#include "parse-options.h"
|
|
#include "userdiff.h"
|
|
#include "grep.h"
|
|
|
|
#ifndef NO_EXTERNAL_GREP
|
|
#ifdef __unix__
|
|
#define NO_EXTERNAL_GREP 0
|
|
#else
|
|
#define NO_EXTERNAL_GREP 1
|
|
#endif
|
|
#endif
|
|
|
|
static char const * const grep_usage[] = {
|
|
"git grep [options] [-e] <pattern> [<rev>...] [[--] path...]",
|
|
NULL
|
|
};
|
|
|
|
static int grep_config(const char *var, const char *value, void *cb)
|
|
{
|
|
struct grep_opt *opt = cb;
|
|
|
|
switch (userdiff_config(var, value)) {
|
|
case 0: break;
|
|
case -1: return -1;
|
|
default: return 0;
|
|
}
|
|
|
|
if (!strcmp(var, "color.grep")) {
|
|
opt->color = git_config_colorbool(var, value, -1);
|
|
return 0;
|
|
}
|
|
if (!strcmp(var, "color.grep.external"))
|
|
return git_config_string(&(opt->color_external), var, value);
|
|
if (!strcmp(var, "color.grep.match")) {
|
|
if (!value)
|
|
return config_error_nonbool(var);
|
|
color_parse(value, var, opt->color_match);
|
|
return 0;
|
|
}
|
|
return git_color_default_config(var, value, cb);
|
|
}
|
|
|
|
/*
|
|
* 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 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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#if !NO_EXTERNAL_GREP
|
|
static int exec_grep(int argc, const char **argv)
|
|
{
|
|
pid_t pid;
|
|
int status;
|
|
|
|
argv[argc] = NULL;
|
|
pid = fork();
|
|
if (pid < 0)
|
|
return pid;
|
|
if (!pid) {
|
|
execvp("grep", (char **) argv);
|
|
exit(255);
|
|
}
|
|
while (waitpid(pid, &status, 0) < 0) {
|
|
if (errno == EINTR)
|
|
continue;
|
|
return -1;
|
|
}
|
|
if (WIFEXITED(status)) {
|
|
if (!WEXITSTATUS(status))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
#define MAXARGS 1000
|
|
#define ARGBUF 4096
|
|
#define push_arg(a) do { \
|
|
if (nr < MAXARGS) argv[nr++] = (a); \
|
|
else die("maximum number of args exceeded"); \
|
|
} while (0)
|
|
|
|
/*
|
|
* If you send a singleton filename to grep, it does not give
|
|
* the name of the file. GNU grep has "-H" but we would want
|
|
* that behaviour in a portable way.
|
|
*
|
|
* So we keep two pathnames in argv buffer unsent to grep in
|
|
* the main loop if we need to do more than one grep.
|
|
*/
|
|
static int flush_grep(struct grep_opt *opt,
|
|
int argc, int arg0, const char **argv, int *kept)
|
|
{
|
|
int status;
|
|
int count = argc - arg0;
|
|
const char *kept_0 = NULL;
|
|
|
|
if (count <= 2) {
|
|
/*
|
|
* Because we keep at least 2 paths in the call from
|
|
* the main loop (i.e. kept != NULL), and MAXARGS is
|
|
* far greater than 2, this usually is a call to
|
|
* conclude the grep. However, the user could attempt
|
|
* to overflow the argv buffer by giving too many
|
|
* options to leave very small number of real
|
|
* arguments even for the call in the main loop.
|
|
*/
|
|
if (kept)
|
|
die("insanely many options to grep");
|
|
|
|
/*
|
|
* If we have two or more paths, we do not have to do
|
|
* anything special, but we need to push /dev/null to
|
|
* get "-H" behaviour of GNU grep portably but when we
|
|
* are not doing "-l" nor "-L" nor "-c".
|
|
*/
|
|
if (count == 1 &&
|
|
!opt->name_only &&
|
|
!opt->unmatch_name_only &&
|
|
!opt->count) {
|
|
argv[argc++] = "/dev/null";
|
|
argv[argc] = NULL;
|
|
}
|
|
}
|
|
|
|
else if (kept) {
|
|
/*
|
|
* Called because we found many paths and haven't finished
|
|
* iterating over the cache yet. We keep two paths
|
|
* for the concluding call. argv[argc-2] and argv[argc-1]
|
|
* has the last two paths, so save the first one away,
|
|
* replace it with NULL while sending the list to grep,
|
|
* and recover them after we are done.
|
|
*/
|
|
*kept = 2;
|
|
kept_0 = argv[argc-2];
|
|
argv[argc-2] = NULL;
|
|
argc -= 2;
|
|
}
|
|
|
|
if (opt->pre_context || opt->post_context) {
|
|
/*
|
|
* grep handles hunk marks between files, but we need to
|
|
* do that ourselves between multiple calls.
|
|
*/
|
|
if (opt->show_hunk_mark)
|
|
write_or_die(1, "--\n", 3);
|
|
else
|
|
opt->show_hunk_mark = 1;
|
|
}
|
|
|
|
status = exec_grep(argc, argv);
|
|
|
|
if (kept_0) {
|
|
/*
|
|
* Then recover them. Now the last arg is beyond the
|
|
* terminating NULL which is at argc, and the second
|
|
* from the last is what we saved away in kept_0
|
|
*/
|
|
argv[arg0++] = kept_0;
|
|
argv[arg0] = argv[argc+1];
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static void grep_add_color(struct strbuf *sb, const char *escape_seq)
|
|
{
|
|
size_t orig_len = sb->len;
|
|
|
|
while (*escape_seq) {
|
|
if (*escape_seq == 'm')
|
|
strbuf_addch(sb, ';');
|
|
else if (*escape_seq != '\033' && *escape_seq != '[')
|
|
strbuf_addch(sb, *escape_seq);
|
|
escape_seq++;
|
|
}
|
|
if (sb->len > orig_len && sb->buf[sb->len - 1] == ';')
|
|
strbuf_setlen(sb, sb->len - 1);
|
|
}
|
|
|
|
static int external_grep(struct grep_opt *opt, const char **paths, int cached)
|
|
{
|
|
int i, nr, argc, hit, len, status;
|
|
const char *argv[MAXARGS+1];
|
|
char randarg[ARGBUF];
|
|
char *argptr = randarg;
|
|
struct grep_pat *p;
|
|
|
|
if (opt->extended || (opt->relative && opt->prefix_length))
|
|
return -1;
|
|
len = nr = 0;
|
|
push_arg("grep");
|
|
if (opt->fixed)
|
|
push_arg("-F");
|
|
if (opt->linenum)
|
|
push_arg("-n");
|
|
if (!opt->pathname)
|
|
push_arg("-h");
|
|
if (opt->regflags & REG_EXTENDED)
|
|
push_arg("-E");
|
|
if (opt->regflags & REG_ICASE)
|
|
push_arg("-i");
|
|
if (opt->binary == GREP_BINARY_NOMATCH)
|
|
push_arg("-I");
|
|
if (opt->word_regexp)
|
|
push_arg("-w");
|
|
if (opt->name_only)
|
|
push_arg("-l");
|
|
if (opt->unmatch_name_only)
|
|
push_arg("-L");
|
|
if (opt->null_following_name)
|
|
/* in GNU grep git's "-z" translates to "-Z" */
|
|
push_arg("-Z");
|
|
if (opt->count)
|
|
push_arg("-c");
|
|
if (opt->post_context || opt->pre_context) {
|
|
if (opt->post_context != opt->pre_context) {
|
|
if (opt->pre_context) {
|
|
push_arg("-B");
|
|
len += snprintf(argptr, sizeof(randarg)-len,
|
|
"%u", opt->pre_context) + 1;
|
|
if (sizeof(randarg) <= len)
|
|
die("maximum length of args exceeded");
|
|
push_arg(argptr);
|
|
argptr += len;
|
|
}
|
|
if (opt->post_context) {
|
|
push_arg("-A");
|
|
len += snprintf(argptr, sizeof(randarg)-len,
|
|
"%u", opt->post_context) + 1;
|
|
if (sizeof(randarg) <= len)
|
|
die("maximum length of args exceeded");
|
|
push_arg(argptr);
|
|
argptr += len;
|
|
}
|
|
}
|
|
else {
|
|
push_arg("-C");
|
|
len += snprintf(argptr, sizeof(randarg)-len,
|
|
"%u", opt->post_context) + 1;
|
|
if (sizeof(randarg) <= len)
|
|
die("maximum length of args exceeded");
|
|
push_arg(argptr);
|
|
argptr += len;
|
|
}
|
|
}
|
|
for (p = opt->pattern_list; p; p = p->next) {
|
|
push_arg("-e");
|
|
push_arg(p->pattern);
|
|
}
|
|
if (opt->color) {
|
|
struct strbuf sb = STRBUF_INIT;
|
|
|
|
grep_add_color(&sb, opt->color_match);
|
|
setenv("GREP_COLOR", sb.buf, 1);
|
|
|
|
strbuf_reset(&sb);
|
|
strbuf_addstr(&sb, "mt=");
|
|
grep_add_color(&sb, opt->color_match);
|
|
strbuf_addstr(&sb, ":sl=:cx=:fn=:ln=:bn=:se=");
|
|
setenv("GREP_COLORS", sb.buf, 1);
|
|
|
|
strbuf_release(&sb);
|
|
|
|
if (opt->color_external && strlen(opt->color_external) > 0)
|
|
push_arg(opt->color_external);
|
|
}
|
|
|
|
hit = 0;
|
|
argc = nr;
|
|
for (i = 0; i < active_nr; i++) {
|
|
struct cache_entry *ce = active_cache[i];
|
|
char *name;
|
|
int kept;
|
|
if (!S_ISREG(ce->ce_mode))
|
|
continue;
|
|
if (!pathspec_matches(paths, ce->name, opt->max_depth))
|
|
continue;
|
|
name = ce->name;
|
|
if (name[0] == '-') {
|
|
int len = ce_namelen(ce);
|
|
name = xmalloc(len + 3);
|
|
memcpy(name, "./", 2);
|
|
memcpy(name + 2, ce->name, len + 1);
|
|
}
|
|
argv[argc++] = name;
|
|
if (MAXARGS <= argc) {
|
|
status = flush_grep(opt, argc, nr, argv, &kept);
|
|
if (0 < status)
|
|
hit = 1;
|
|
argc = nr + kept;
|
|
}
|
|
if (ce_stage(ce)) {
|
|
do {
|
|
i++;
|
|
} while (i < active_nr &&
|
|
!strcmp(ce->name, active_cache[i]->name));
|
|
i--; /* compensate for loop control */
|
|
}
|
|
}
|
|
if (argc > nr) {
|
|
status = flush_grep(opt, argc, nr, argv, NULL);
|
|
if (0 < status)
|
|
hit = 1;
|
|
}
|
|
return hit;
|
|
}
|
|
#endif
|
|
|
|
static int grep_cache(struct grep_opt *opt, const char **paths, int cached,
|
|
int external_grep_allowed)
|
|
{
|
|
int hit = 0;
|
|
int nr;
|
|
read_cache();
|
|
|
|
#if !NO_EXTERNAL_GREP
|
|
/*
|
|
* Use the external "grep" command for the case where
|
|
* we grep through the checked-out files. It tends to
|
|
* be a lot more optimized
|
|
*/
|
|
if (!cached && external_grep_allowed) {
|
|
hit = external_grep(opt, paths, cached);
|
|
if (hit >= 0)
|
|
return hit;
|
|
}
|
|
#endif
|
|
|
|
for (nr = 0; nr < active_nr; nr++) {
|
|
struct cache_entry *ce = active_cache[nr];
|
|
if (!S_ISREG(ce->ce_mode))
|
|
continue;
|
|
if (!pathspec_matches(paths, ce->name, opt->max_depth))
|
|
continue;
|
|
/*
|
|
* If CE_VALID is on, we assume worktree file and its cache entry
|
|
* are identical, even if worktree file has been modified, so use
|
|
* cache version instead
|
|
*/
|
|
if (cached || (ce->ce_flags & CE_VALID)) {
|
|
if (ce_stage(ce))
|
|
continue;
|
|
hit |= grep_sha1(opt, ce->sha1, ce->name, 0);
|
|
}
|
|
else
|
|
hit |= grep_file(opt, ce->name);
|
|
if (ce_stage(ce)) {
|
|
do {
|
|
nr++;
|
|
} while (nr < active_nr &&
|
|
!strcmp(ce->name, active_cache[nr]->name));
|
|
nr--; /* compensate for loop control */
|
|
}
|
|
}
|
|
free_grep_patterns(opt);
|
|
return hit;
|
|
}
|
|
|
|
static int grep_tree(struct grep_opt *opt, const char **paths,
|
|
struct tree_desc *tree,
|
|
const char *tree_name, const char *base)
|
|
{
|
|
int len;
|
|
int hit = 0;
|
|
struct name_entry entry;
|
|
char *down;
|
|
int tn_len = strlen(tree_name);
|
|
struct strbuf pathbuf;
|
|
|
|
strbuf_init(&pathbuf, PATH_MAX + tn_len);
|
|
|
|
if (tn_len) {
|
|
strbuf_add(&pathbuf, tree_name, tn_len);
|
|
strbuf_addch(&pathbuf, ':');
|
|
tn_len = pathbuf.len;
|
|
}
|
|
strbuf_addstr(&pathbuf, base);
|
|
len = pathbuf.len;
|
|
|
|
while (tree_entry(tree, &entry)) {
|
|
int te_len = tree_entry_len(entry.path, entry.sha1);
|
|
pathbuf.len = len;
|
|
strbuf_add(&pathbuf, 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(&pathbuf, '/');
|
|
|
|
down = pathbuf.buf + tn_len;
|
|
if (!pathspec_matches(paths, down, opt->max_depth))
|
|
;
|
|
else if (S_ISREG(entry.mode))
|
|
hit |= grep_sha1(opt, entry.sha1, pathbuf.buf, tn_len);
|
|
else if (S_ISDIR(entry.mode)) {
|
|
enum object_type type;
|
|
struct tree_desc sub;
|
|
void *data;
|
|
unsigned long size;
|
|
|
|
data = read_sha1_file(entry.sha1, &type, &size);
|
|
if (!data)
|
|
die("unable to read tree (%s)",
|
|
sha1_to_hex(entry.sha1));
|
|
init_tree_desc(&sub, data, size);
|
|
hit |= grep_tree(opt, paths, &sub, tree_name, down);
|
|
free(data);
|
|
}
|
|
}
|
|
strbuf_release(&pathbuf);
|
|
return hit;
|
|
}
|
|
|
|
static int grep_object(struct grep_opt *opt, const char **paths,
|
|
struct object *obj, const char *name)
|
|
{
|
|
if (obj->type == OBJ_BLOB)
|
|
return grep_sha1(opt, obj->sha1, name, 0);
|
|
if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
|
|
struct tree_desc tree;
|
|
void *data;
|
|
unsigned long size;
|
|
int hit;
|
|
data = read_object_with_reference(obj->sha1, tree_type,
|
|
&size, NULL);
|
|
if (!data)
|
|
die("unable to read tree (%s)", sha1_to_hex(obj->sha1));
|
|
init_tree_desc(&tree, data, size);
|
|
hit = grep_tree(opt, paths, &tree, name, "");
|
|
free(data);
|
|
return hit;
|
|
}
|
|
die("unable to grep from object of type %s", typename(obj->type));
|
|
}
|
|
|
|
static int context_callback(const struct option *opt, const char *arg,
|
|
int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
int value;
|
|
const char *endp;
|
|
|
|
if (unset) {
|
|
grep_opt->pre_context = grep_opt->post_context = 0;
|
|
return 0;
|
|
}
|
|
value = strtol(arg, (char **)&endp, 10);
|
|
if (*endp) {
|
|
return error("switch `%c' expects a numerical value",
|
|
opt->short_name);
|
|
}
|
|
grep_opt->pre_context = grep_opt->post_context = value;
|
|
return 0;
|
|
}
|
|
|
|
static int file_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
FILE *patterns;
|
|
int lno = 0;
|
|
struct strbuf sb;
|
|
|
|
patterns = fopen(arg, "r");
|
|
if (!patterns)
|
|
die_errno("cannot open '%s'", arg);
|
|
while (strbuf_getline(&sb, patterns, '\n') == 0) {
|
|
/* ignore empty line like grep does */
|
|
if (sb.len == 0)
|
|
continue;
|
|
append_grep_pattern(grep_opt, strbuf_detach(&sb, NULL), arg,
|
|
++lno, GREP_PATTERN);
|
|
}
|
|
fclose(patterns);
|
|
strbuf_release(&sb);
|
|
return 0;
|
|
}
|
|
|
|
static int not_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
|
|
return 0;
|
|
}
|
|
|
|
static int and_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
|
|
return 0;
|
|
}
|
|
|
|
static int open_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
|
|
return 0;
|
|
}
|
|
|
|
static int close_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
|
|
return 0;
|
|
}
|
|
|
|
static int pattern_callback(const struct option *opt, const char *arg,
|
|
int unset)
|
|
{
|
|
struct grep_opt *grep_opt = opt->value;
|
|
append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
|
|
return 0;
|
|
}
|
|
|
|
static int help_callback(const struct option *opt, const char *arg, int unset)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
int cmd_grep(int argc, const char **argv, const char *prefix)
|
|
{
|
|
int hit = 0;
|
|
int cached = 0;
|
|
int external_grep_allowed = 1;
|
|
int seen_dashdash = 0;
|
|
struct grep_opt opt;
|
|
struct object_array list = { 0, 0, NULL };
|
|
const char **paths = NULL;
|
|
int i;
|
|
int dummy;
|
|
struct option options[] = {
|
|
OPT_BOOLEAN(0, "cached", &cached,
|
|
"search in index instead of in the work tree"),
|
|
OPT_GROUP(""),
|
|
OPT_BOOLEAN('v', "invert-match", &opt.invert,
|
|
"show non-matching lines"),
|
|
OPT_BIT('i', "ignore-case", &opt.regflags,
|
|
"case insensitive matching", REG_ICASE),
|
|
OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp,
|
|
"match patterns only at word boundaries"),
|
|
OPT_SET_INT('a', "text", &opt.binary,
|
|
"process binary files as text", GREP_BINARY_TEXT),
|
|
OPT_SET_INT('I', NULL, &opt.binary,
|
|
"don't match patterns in binary files",
|
|
GREP_BINARY_NOMATCH),
|
|
{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, "depth",
|
|
"descend at most <depth> levels", PARSE_OPT_NONEG,
|
|
NULL, 1 },
|
|
OPT_GROUP(""),
|
|
OPT_BIT('E', "extended-regexp", &opt.regflags,
|
|
"use extended POSIX regular expressions", REG_EXTENDED),
|
|
OPT_NEGBIT('G', "basic-regexp", &opt.regflags,
|
|
"use basic POSIX regular expressions (default)",
|
|
REG_EXTENDED),
|
|
OPT_BOOLEAN('F', "fixed-strings", &opt.fixed,
|
|
"interpret patterns as fixed strings"),
|
|
OPT_GROUP(""),
|
|
OPT_BOOLEAN('n', NULL, &opt.linenum, "show line numbers"),
|
|
OPT_NEGBIT('h', NULL, &opt.pathname, "don't show filenames", 1),
|
|
OPT_BIT('H', NULL, &opt.pathname, "show filenames", 1),
|
|
OPT_NEGBIT(0, "full-name", &opt.relative,
|
|
"show filenames relative to top directory", 1),
|
|
OPT_BOOLEAN('l', "files-with-matches", &opt.name_only,
|
|
"show only filenames instead of matching lines"),
|
|
OPT_BOOLEAN(0, "name-only", &opt.name_only,
|
|
"synonym for --files-with-matches"),
|
|
OPT_BOOLEAN('L', "files-without-match",
|
|
&opt.unmatch_name_only,
|
|
"show only the names of files without match"),
|
|
OPT_BOOLEAN('z', "null", &opt.null_following_name,
|
|
"print NUL after filenames"),
|
|
OPT_BOOLEAN('c', "count", &opt.count,
|
|
"show the number of matches instead of matching lines"),
|
|
OPT_SET_INT(0, "color", &opt.color, "highlight matches", 1),
|
|
OPT_GROUP(""),
|
|
OPT_CALLBACK('C', NULL, &opt, "n",
|
|
"show <n> context lines before and after matches",
|
|
context_callback),
|
|
OPT_INTEGER('B', NULL, &opt.pre_context,
|
|
"show <n> context lines before matches"),
|
|
OPT_INTEGER('A', NULL, &opt.post_context,
|
|
"show <n> context lines after matches"),
|
|
OPT_NUMBER_CALLBACK(&opt, "shortcut for -C NUM",
|
|
context_callback),
|
|
OPT_BOOLEAN('p', "show-function", &opt.funcname,
|
|
"show a line with the function name before matches"),
|
|
OPT_GROUP(""),
|
|
OPT_CALLBACK('f', NULL, &opt, "file",
|
|
"read patterns from file", file_callback),
|
|
{ OPTION_CALLBACK, 'e', NULL, &opt, "pattern",
|
|
"match <pattern>", PARSE_OPT_NONEG, pattern_callback },
|
|
{ OPTION_CALLBACK, 0, "and", &opt, NULL,
|
|
"combine patterns specified with -e",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
|
|
OPT_BOOLEAN(0, "or", &dummy, ""),
|
|
{ OPTION_CALLBACK, 0, "not", &opt, NULL, "",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
|
|
{ OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
|
|
open_callback },
|
|
{ OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
|
|
PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
|
|
close_callback },
|
|
OPT_BOOLEAN(0, "all-match", &opt.all_match,
|
|
"show only matches from files that match all patterns"),
|
|
OPT_GROUP(""),
|
|
#if NO_EXTERNAL_GREP
|
|
OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed,
|
|
"allow calling of grep(1) (ignored by this build)"),
|
|
#else
|
|
OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed,
|
|
"allow calling of grep(1) (default)"),
|
|
#endif
|
|
{ OPTION_CALLBACK, 0, "help-all", &options, NULL, "show usage",
|
|
PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
|
|
OPT_END()
|
|
};
|
|
|
|
memset(&opt, 0, sizeof(opt));
|
|
opt.prefix_length = (prefix && *prefix) ? strlen(prefix) : 0;
|
|
opt.relative = 1;
|
|
opt.pathname = 1;
|
|
opt.pattern_tail = &opt.pattern_list;
|
|
opt.regflags = REG_NEWLINE;
|
|
opt.max_depth = -1;
|
|
|
|
strcpy(opt.color_match, GIT_COLOR_RED GIT_COLOR_BOLD);
|
|
opt.color = -1;
|
|
git_config(grep_config, &opt);
|
|
if (opt.color == -1)
|
|
opt.color = git_use_color_default;
|
|
|
|
/*
|
|
* If there is no -- then the paths must exist in the working
|
|
* tree. If there is no explicit pattern specified with -e or
|
|
* -f, we take the first unrecognized non option to be the
|
|
* pattern, but then what follows it must be zero or more
|
|
* valid refs up to the -- (if exists), and then existing
|
|
* paths. If there is an explicit pattern, then the first
|
|
* unrecognized non option is the beginning of the refs list
|
|
* that continues up to the -- (if exists), and then paths.
|
|
*/
|
|
argc = parse_options(argc, argv, prefix, options, grep_usage,
|
|
PARSE_OPT_KEEP_DASHDASH |
|
|
PARSE_OPT_STOP_AT_NON_OPTION |
|
|
PARSE_OPT_NO_INTERNAL_HELP);
|
|
|
|
/* First unrecognized non-option token */
|
|
if (argc > 0 && !opt.pattern_list) {
|
|
append_grep_pattern(&opt, argv[0], "command line", 0,
|
|
GREP_PATTERN);
|
|
argv++;
|
|
argc--;
|
|
}
|
|
|
|
if ((opt.color && !opt.color_external) || opt.funcname)
|
|
external_grep_allowed = 0;
|
|
if (!opt.pattern_list)
|
|
die("no pattern given.");
|
|
if ((opt.regflags != REG_NEWLINE) && opt.fixed)
|
|
die("cannot mix --fixed-strings and regexp");
|
|
compile_grep_patterns(&opt);
|
|
|
|
/* Check revs and then paths */
|
|
for (i = 0; i < argc; i++) {
|
|
const char *arg = argv[i];
|
|
unsigned char sha1[20];
|
|
/* Is it a rev? */
|
|
if (!get_sha1(arg, sha1)) {
|
|
struct object *object = parse_object(sha1);
|
|
if (!object)
|
|
die("bad object %s", arg);
|
|
add_object_array(object, arg, &list);
|
|
continue;
|
|
}
|
|
if (!strcmp(arg, "--")) {
|
|
i++;
|
|
seen_dashdash = 1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* The rest are paths */
|
|
if (!seen_dashdash) {
|
|
int j;
|
|
for (j = i; j < argc; j++)
|
|
verify_filename(prefix, argv[j]);
|
|
}
|
|
|
|
if (i < argc) {
|
|
paths = get_pathspec(prefix, argv + i);
|
|
if (opt.prefix_length && opt.relative) {
|
|
/* Make sure we do not get outside of paths */
|
|
for (i = 0; paths[i]; i++)
|
|
if (strncmp(prefix, paths[i], opt.prefix_length))
|
|
die("git grep: cannot generate relative filenames containing '..'");
|
|
}
|
|
}
|
|
else if (prefix) {
|
|
paths = xcalloc(2, sizeof(const char *));
|
|
paths[0] = prefix;
|
|
paths[1] = NULL;
|
|
}
|
|
|
|
if (!list.nr) {
|
|
if (!cached)
|
|
setup_work_tree();
|
|
return !grep_cache(&opt, paths, cached, external_grep_allowed);
|
|
}
|
|
|
|
if (cached)
|
|
die("both --cached and trees are given.");
|
|
|
|
for (i = 0; i < list.nr; i++) {
|
|
struct object *real_obj;
|
|
real_obj = deref_tag(list.objects[i].item, NULL, 0);
|
|
if (grep_object(&opt, paths, real_obj, list.objects[i].name))
|
|
hit = 1;
|
|
}
|
|
free_grep_patterns(&opt);
|
|
return !hit;
|
|
}
|