#include "tag.h"
#include "tree-walk.h"
#include "builtin.h"
-#include <regex.h>
-#include <fnmatch.h>
-#include <sys/wait.h>
+#include "parse-options.h"
+#include "userdiff.h"
+#include "grep.h"
+#include "quote.h"
+
+#ifndef NO_PTHREADS
+#include "thread-utils.h"
+#include <pthread.h>
+#endif
+
+static char const * const grep_usage[] = {
+ "git grep [options] [-e] <pattern> [<rev>...] [[--] path...]",
+ NULL
+};
+
+static int use_threads = 1;
+
+#ifndef NO_PTHREADS
+#define THREADS 8
+static pthread_t threads[THREADS];
+
+static void *load_sha1(const unsigned char *sha1, unsigned long *size,
+ const char *name);
+static void *load_file(const char *filename, size_t *sz);
+
+enum work_type {WORK_SHA1, WORK_FILE};
+
+/* We use one producer thread and THREADS consumer
+ * threads. The producer adds struct work_items to 'todo' and the
+ * consumers pick work items from the same array.
+ */
+struct work_item
+{
+ enum work_type type;
+ char *name;
+
+ /* if type == WORK_SHA1, then 'identifier' is a SHA1,
+ * otherwise type == WORK_FILE, and 'identifier' is a NUL
+ * terminated filename.
+ */
+ void *identifier;
+ char done;
+ struct strbuf out;
+};
+
+/* In the range [todo_done, todo_start) in 'todo' we have work_items
+ * that have been or are processed by a consumer thread. We haven't
+ * written the result for these to stdout yet.
+ *
+ * The work_items in [todo_start, todo_end) are waiting to be picked
+ * up by a consumer thread.
+ *
+ * The ranges are modulo TODO_SIZE.
+ */
+#define TODO_SIZE 128
+static struct work_item todo[TODO_SIZE];
+static int todo_start;
+static int todo_end;
+static int todo_done;
+
+/* Has all work items been added? */
+static int all_work_added;
+
+/* This lock protects all the variables above. */
+static pthread_mutex_t grep_mutex;
+
+/* Used to serialize calls to read_sha1_file. */
+static pthread_mutex_t read_sha1_mutex;
+
+#define grep_lock() pthread_mutex_lock(&grep_mutex)
+#define grep_unlock() pthread_mutex_unlock(&grep_mutex)
+#define read_sha1_lock() pthread_mutex_lock(&read_sha1_mutex)
+#define read_sha1_unlock() pthread_mutex_unlock(&read_sha1_mutex)
+
+/* Signalled when a new work_item is added to todo. */
+static pthread_cond_t cond_add;
+
+/* Signalled when the result from one work_item is written to
+ * stdout.
+ */
+static pthread_cond_t cond_write;
+
+/* Signalled when we are finished with everything. */
+static pthread_cond_t cond_result;
+
+static void add_work(enum work_type type, char *name, void *id)
+{
+ grep_lock();
+
+ while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
+ pthread_cond_wait(&cond_write, &grep_mutex);
+ }
+
+ todo[todo_end].type = type;
+ todo[todo_end].name = name;
+ todo[todo_end].identifier = id;
+ todo[todo_end].done = 0;
+ strbuf_reset(&todo[todo_end].out);
+ todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
+
+ pthread_cond_signal(&cond_add);
+ grep_unlock();
+}
+
+static struct work_item *get_work(void)
+{
+ struct work_item *ret;
+
+ grep_lock();
+ while (todo_start == todo_end && !all_work_added) {
+ pthread_cond_wait(&cond_add, &grep_mutex);
+ }
+
+ if (todo_start == todo_end && all_work_added) {
+ ret = NULL;
+ } else {
+ ret = &todo[todo_start];
+ todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
+ }
+ grep_unlock();
+ return ret;
+}
+
+static void grep_sha1_async(struct grep_opt *opt, char *name,
+ const unsigned char *sha1)
+{
+ unsigned char *s;
+ s = xmalloc(20);
+ memcpy(s, sha1, 20);
+ add_work(WORK_SHA1, name, s);
+}
+
+static void grep_file_async(struct grep_opt *opt, char *name,
+ const char *filename)
+{
+ add_work(WORK_FILE, name, xstrdup(filename));
+}
+
+static void work_done(struct work_item *w)
+{
+ int old_done;
+
+ grep_lock();
+ w->done = 1;
+ old_done = todo_done;
+ for(; todo[todo_done].done && todo_done != todo_start;
+ todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
+ w = &todo[todo_done];
+ write_or_die(1, w->out.buf, w->out.len);
+ free(w->name);
+ free(w->identifier);
+ }
+
+ if (old_done != todo_done)
+ pthread_cond_signal(&cond_write);
+
+ if (all_work_added && todo_done == todo_end)
+ pthread_cond_signal(&cond_result);
+
+ grep_unlock();
+}
+
+static void *run(void *arg)
+{
+ int hit = 0;
+ struct grep_opt *opt = arg;
+
+ while (1) {
+ struct work_item *w = get_work();
+ if (!w)
+ break;
+
+ 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 void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
+{
+ struct work_item *w = opt->output_priv;
+ strbuf_add(&w->out, buf, size);
+}
+
+static void start_threads(struct grep_opt *opt)
+{
+ int i;
+
+ pthread_mutex_init(&grep_mutex, NULL);
+ pthread_mutex_init(&read_sha1_mutex, NULL);
+ pthread_cond_init(&cond_add, NULL);
+ pthread_cond_init(&cond_write, NULL);
+ pthread_cond_init(&cond_result, NULL);
+
+ for (i = 0; i < ARRAY_SIZE(todo); i++) {
+ strbuf_init(&todo[i].out, 0);
+ }
+
+ for (i = 0; i < ARRAY_SIZE(threads); i++) {
+ int err;
+ struct grep_opt *o = grep_opt_dup(opt);
+ o->output = strbuf_out;
+ compile_grep_patterns(o);
+ err = pthread_create(&threads[i], NULL, run, o);
+
+ if (err)
+ die("grep: failed to create thread: %s",
+ strerror(err));
+ }
+}
+
+static int wait_all(void)
+{
+ int hit = 0;
+ int i;
+
+ grep_lock();
+ all_work_added = 1;
+
+ /* Wait until all work is done. */
+ while (todo_done != todo_end)
+ pthread_cond_wait(&cond_result, &grep_mutex);
+
+ /* Wake up all the consumer threads so they can see that there
+ * is no more work to do.
+ */
+ pthread_cond_broadcast(&cond_add);
+ grep_unlock();
+
+ for (i = 0; i < ARRAY_SIZE(threads); i++) {
+ void *h;
+ pthread_join(threads[i], &h);
+ hit |= (int) (intptr_t) h;
+ }
+
+ pthread_mutex_destroy(&grep_mutex);
+ pthread_mutex_destroy(&read_sha1_mutex);
+ pthread_cond_destroy(&cond_add);
+ pthread_cond_destroy(&cond_write);
+ pthread_cond_destroy(&cond_result);
+
+ return hit;
+}
+#else /* !NO_PTHREADS */
+#define read_sha1_lock()
+#define read_sha1_unlock()
+
+static int wait_all(void)
+{
+ return 0;
+}
+#endif
+
+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.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)
+static int pathspec_matches(const char **paths, const char *name, int max_depth)
{
int namelen, i;
if (!paths || !*paths)
- return 1;
+ 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 ((matchlen <= namelen) &&
- !strncmp(name, match, matchlen) &&
- (match[matchlen-1] == '/' ||
- name[matchlen] == '\0' || name[matchlen] == '/'))
+ if (is_subdir(name, namelen, match, matchlen, max_depth))
return 1;
if (!fnmatch(match, name, 0))
return 1;
return 0;
}
-struct grep_pat {
- struct grep_pat *next;
- const char *origin;
- int no;
- const char *pattern;
- regex_t regexp;
-};
-
-struct grep_opt {
- struct grep_pat *pattern_list;
- struct grep_pat **pattern_tail;
- regex_t regexp;
- unsigned linenum:1;
- unsigned invert:1;
- unsigned name_only:1;
- unsigned unmatch_name_only:1;
- unsigned count:1;
- unsigned word_regexp:1;
- unsigned fixed:1;
-#define GREP_BINARY_DEFAULT 0
-#define GREP_BINARY_NOMATCH 1
-#define GREP_BINARY_TEXT 2
- unsigned binary:2;
- int regflags;
- unsigned pre_context;
- unsigned post_context;
-};
-
-static void add_pattern(struct grep_opt *opt, const char *pat,
- const char *origin, int no)
-{
- struct grep_pat *p = xcalloc(1, sizeof(*p));
- p->pattern = pat;
- p->origin = origin;
- p->no = no;
- *opt->pattern_tail = p;
- opt->pattern_tail = &p->next;
- p->next = NULL;
-}
-
-static void compile_patterns(struct grep_opt *opt)
-{
- struct grep_pat *p;
- for (p = opt->pattern_list; p; p = p->next) {
- int err = regcomp(&p->regexp, p->pattern, opt->regflags);
- if (err) {
- char errbuf[1024];
- char where[1024];
- if (p->no)
- sprintf(where, "In '%s' at %d, ",
- p->origin, p->no);
- else if (p->origin)
- sprintf(where, "%s, ", p->origin);
- else
- where[0] = 0;
- regerror(err, &p->regexp, errbuf, 1024);
- regfree(&p->regexp);
- die("%s'%s': %s", where, p->pattern, errbuf);
- }
- }
-}
-
-static char *end_of_line(char *cp, unsigned long *left)
+static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
{
- unsigned long l = *left;
- while (l && *cp != '\n') {
- l--;
- cp++;
+ void *data;
+
+ if (use_threads) {
+ read_sha1_lock();
+ data = read_sha1_file(sha1, type, size);
+ read_sha1_unlock();
+ } else {
+ data = read_sha1_file(sha1, type, size);
}
- *left = l;
- return cp;
+ return data;
}
-static int word_char(char ch)
+static void *load_sha1(const unsigned char *sha1, unsigned long *size,
+ const char *name)
{
- return isalnum(ch) || ch == '_';
-}
+ enum object_type type;
+ void *data = lock_and_read_sha1_file(sha1, &type, size);
-static void show_line(struct grep_opt *opt, const char *bol, const char *eol,
- const char *name, unsigned lno, char sign)
-{
- printf("%s%c", name, sign);
- if (opt->linenum)
- printf("%d%c", lno, sign);
- printf("%.*s\n", (int)(eol-bol), bol);
-}
+ if (!data)
+ error("'%s': unable to read %s", name, sha1_to_hex(sha1));
-/*
- * NEEDSWORK: share code with diff.c
- */
-#define FIRST_FEW_BYTES 8000
-static int buffer_is_binary(const char *ptr, unsigned long size)
-{
- if (FIRST_FEW_BYTES < size)
- size = FIRST_FEW_BYTES;
- if (memchr(ptr, 0, size))
- return 1;
- return 0;
+ return data;
}
-static int fixmatch(const char *pattern, char *line, regmatch_t *match)
+static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
+ const char *filename, int tree_name_len)
{
- char *hit = strstr(line, pattern);
- if (!hit) {
- match->rm_so = match->rm_eo = -1;
- return REG_NOMATCH;
- }
- else {
- match->rm_so = hit - line;
- match->rm_eo = match->rm_so + strlen(pattern);
- return 0;
- }
-}
-
-static int grep_buffer(struct grep_opt *opt, const char *name,
- char *buf, unsigned long size)
-{
- char *bol = buf;
- unsigned long left = size;
- unsigned lno = 1;
- struct pre_context_line {
- char *bol;
- char *eol;
- } *prev = NULL, *pcl;
- unsigned last_hit = 0;
- unsigned last_shown = 0;
- int binary_match_only = 0;
- const char *hunk_mark = "";
- unsigned count = 0;
-
- if (buffer_is_binary(buf, size)) {
- switch (opt->binary) {
- case GREP_BINARY_DEFAULT:
- binary_match_only = 1;
- break;
- case GREP_BINARY_NOMATCH:
- return 0; /* Assume unmatch */
- break;
- default:
- break;
- }
- }
-
- if (opt->pre_context)
- prev = xcalloc(opt->pre_context, sizeof(*prev));
- if (opt->pre_context || opt->post_context)
- hunk_mark = "--\n";
-
- while (left) {
- regmatch_t pmatch[10];
- char *eol, ch;
- int hit = 0;
- struct grep_pat *p;
-
- eol = end_of_line(bol, &left);
- ch = *eol;
- *eol = 0;
-
- for (p = opt->pattern_list; p; p = p->next) {
- if (!opt->fixed) {
- regex_t *exp = &p->regexp;
- hit = !regexec(exp, bol, ARRAY_SIZE(pmatch),
- pmatch, 0);
- }
- else {
- hit = !fixmatch(p->pattern, bol, pmatch);
- }
-
- if (hit && opt->word_regexp) {
- /* Match beginning must be either
- * beginning of the line, or at word
- * boundary (i.e. the last char must
- * not be alnum or underscore).
- */
- if ((pmatch[0].rm_so < 0) ||
- (eol - bol) <= pmatch[0].rm_so ||
- (pmatch[0].rm_eo < 0) ||
- (eol - bol) < pmatch[0].rm_eo)
- die("regexp returned nonsense");
- if (pmatch[0].rm_so != 0 &&
- word_char(bol[pmatch[0].rm_so-1]))
- hit = 0;
- if (pmatch[0].rm_eo != (eol-bol) &&
- word_char(bol[pmatch[0].rm_eo]))
- hit = 0;
- }
- if (hit)
- break;
- }
- /* "grep -v -e foo -e bla" should list lines
- * that do not have either, so inversion should
- * be done outside.
- */
- if (opt->invert)
- hit = !hit;
- if (opt->unmatch_name_only) {
- if (hit)
- return 0;
- goto next_line;
- }
- if (hit) {
- count++;
- if (binary_match_only) {
- printf("Binary file %s matches\n", name);
- return 1;
- }
- if (opt->name_only) {
- printf("%s\n", name);
- return 1;
- }
- /* Hit at this line. If we haven't shown the
- * pre-context lines, we would need to show them.
- * When asked to do "count", this still show
- * the context which is nonsense, but the user
- * deserves to get that ;-).
- */
- if (opt->pre_context) {
- unsigned from;
- if (opt->pre_context < lno)
- from = lno - opt->pre_context;
- else
- from = 1;
- if (from <= last_shown)
- from = last_shown + 1;
- if (last_shown && from != last_shown + 1)
- printf(hunk_mark);
- while (from < lno) {
- pcl = &prev[lno-from-1];
- show_line(opt, pcl->bol, pcl->eol,
- name, from, '-');
- from++;
- }
- last_shown = lno-1;
- }
- if (last_shown && lno != last_shown + 1)
- printf(hunk_mark);
- if (!opt->count)
- show_line(opt, bol, eol, name, lno, ':');
- last_shown = last_hit = lno;
- }
- else if (last_hit &&
- lno <= last_hit + opt->post_context) {
- /* If the last hit is within the post context,
- * we need to show this line.
- */
- if (last_shown && lno != last_shown + 1)
- printf(hunk_mark);
- show_line(opt, bol, eol, name, lno, '-');
- last_shown = lno;
- }
- if (opt->pre_context) {
- memmove(prev+1, prev,
- (opt->pre_context-1) * sizeof(*prev));
- prev->bol = bol;
- prev->eol = eol;
- }
-
- next_line:
- *eol = ch;
- bol = eol + 1;
- if (!left)
- break;
- left--;
- lno++;
- }
-
- if (opt->unmatch_name_only) {
- /* We did not see any hit, so we want to show this */
- printf("%s\n", name);
- return 1;
+ 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);
}
- /* NEEDSWORK:
- * The real "grep -c foo *.c" gives many "bar.c:0" lines,
- * which feels mostly useless but sometimes useful. Maybe
- * make it another option? For now suppress them.
- */
- if (opt->count && count)
- printf("%s:%u\n", name, count);
- return !!last_hit;
-}
+ name = strbuf_detach(&pathbuf, NULL);
-static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name)
-{
- unsigned long size;
- char *data;
- char type[20];
- int hit;
- data = read_sha1_file(sha1, type, &size);
- if (!data) {
- error("'%s': unable to read %s", name, sha1_to_hex(sha1));
+#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;
}
- hit = grep_buffer(opt, name, data, size);
- free(data);
- return hit;
}
-static int grep_file(struct grep_opt *opt, const char *filename)
+static void *load_file(const char *filename, size_t *sz)
{
struct stat st;
- int i;
char *data;
+ int i;
+
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(st.st_size + 1);
- if (st.st_size != xread(i, data, st.st_size)) {
+ 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);
- i = grep_buffer(opt, filename, data, st.st_size);
- free(data);
- return i;
+ data[*sz] = 0;
+ return data;
}
-static int exec_grep(int argc, const char **argv)
+static int grep_file(struct grep_opt *opt, const char *filename)
{
- 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;
+ 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;
- }
- 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)
-
-static int external_grep(struct grep_opt *opt, const char **paths, int cached)
-{
- int i, nr, argc, hit, len;
- const char *argv[MAXARGS+1];
- char randarg[ARGBUF];
- char *argptr = randarg;
- struct grep_pat *p;
-
- len = nr = 0;
- push_arg("grep");
- push_arg("-H");
- if (opt->fixed)
- push_arg("-F");
- if (opt->linenum)
- push_arg("-n");
- if (opt->regflags & REG_EXTENDED)
- push_arg("-E");
- if (opt->word_regexp)
- push_arg("-w");
- if (opt->name_only)
- push_arg("-l");
- if (opt->unmatch_name_only)
- push_arg("-L");
- 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);
- 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);
- 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);
- 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);
- }
- push_arg("--");
+ } 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);
- hit = 0;
- argc = nr;
- for (i = 0; i < active_nr; i++) {
- struct cache_entry *ce = active_cache[i];
- if (ce_stage(ce) || !S_ISREG(ntohl(ce->ce_mode)))
- continue;
- if (!pathspec_matches(paths, ce->name))
- continue;
- argv[argc++] = ce->name;
- if (argc < MAXARGS)
- continue;
- hit += exec_grep(argc, argv);
- argc = nr;
+ free(data);
+ free(name);
+ return hit;
}
- if (argc > nr)
- hit += exec_grep(argc, argv);
- return 0;
}
static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
int nr;
read_cache();
-#ifdef __unix__
- /*
- * 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) {
- 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 (ce_stage(ce) || !S_ISREG(ntohl(ce->ce_mode)))
+ if (!S_ISREG(ce->ce_mode))
continue;
- if (!pathspec_matches(paths, ce->name))
+ if (!pathspec_matches(paths, ce->name, opt->max_depth))
continue;
- if (cached)
- hit |= grep_sha1(opt, ce->sha1, ce->name);
+ /*
+ * 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) || ce_skip_worktree(ce)) {
+ 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 */
+ }
+ if (hit && opt->status_only)
+ break;
}
+ free_grep_patterns(opt);
return hit;
}
struct tree_desc *tree,
const char *tree_name, const char *base)
{
- unsigned mode;
int len;
int hit = 0;
- const char *path;
- const unsigned char *sha1;
+ struct name_entry entry;
char *down;
- char *path_buf = xmalloc(PATH_MAX + strlen(tree_name) + 100);
+ int tn_len = strlen(tree_name);
+ struct strbuf pathbuf;
- if (tree_name[0]) {
- int offset = sprintf(path_buf, "%s:", tree_name);
- down = path_buf + offset;
- strcat(down, base);
- }
- else {
- down = path_buf;
- strcpy(down, base);
+ strbuf_init(&pathbuf, PATH_MAX + tn_len);
+
+ if (tn_len) {
+ strbuf_add(&pathbuf, tree_name, tn_len);
+ strbuf_addch(&pathbuf, ':');
+ tn_len = pathbuf.len;
}
- len = strlen(path_buf);
+ strbuf_addstr(&pathbuf, base);
+ len = pathbuf.len;
- while (tree->size) {
- int pathlen;
- sha1 = tree_entry_extract(tree, &path, &mode);
- pathlen = strlen(path);
- strcpy(path_buf + len, path);
+ 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(mode))
+ if (S_ISDIR(entry.mode))
/* Match "abc/" against pathspec to
* decide if we want to descend into "abc"
* directory.
*/
- strcpy(path_buf + len + pathlen, "/");
+ strbuf_addch(&pathbuf, '/');
- if (!pathspec_matches(paths, down))
+ down = pathbuf.buf + tn_len;
+ if (!pathspec_matches(paths, down, opt->max_depth))
;
- else if (S_ISREG(mode))
- hit |= grep_sha1(opt, sha1, path_buf);
- else if (S_ISDIR(mode)) {
- char type[20];
+ 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;
- data = read_sha1_file(sha1, type, &sub.size);
+ unsigned long size;
+
+ data = lock_and_read_sha1_file(entry.sha1, &type, &size);
if (!data)
die("unable to read tree (%s)",
- sha1_to_hex(sha1));
- sub.buf = data;
+ sha1_to_hex(entry.sha1));
+ init_tree_desc(&sub, data, size);
hit |= grep_tree(opt, paths, &sub, tree_name, down);
free(data);
}
- update_tree_entry(tree);
+ if (hit && opt->status_only)
+ break;
}
+ strbuf_release(&pathbuf);
return hit;
}
static int grep_object(struct grep_opt *opt, const char **paths,
struct object *obj, const char *name)
{
- if (!strcmp(obj->type, blob_type))
- return grep_sha1(opt, obj->sha1, name);
- if (!strcmp(obj->type, commit_type) ||
- !strcmp(obj->type, tree_type)) {
+ 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,
- &tree.size, NULL);
+ &size, NULL);
if (!data)
die("unable to read tree (%s)", sha1_to_hex(obj->sha1));
- tree.buf = data;
+ 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", obj->type);
+ 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 = STRBUF_INIT;
+
+ 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 const char builtin_grep_usage[] =
-"git-grep <option>* <rev>* [-e] <pattern> [<path>...]";
+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;
+}
-int cmd_grep(int argc, const char **argv, char **envp)
+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 seen_dashdash = 0;
+ int external_grep_allowed__ignored;
struct grep_opt opt;
- struct object_list *list, **tail, *object_list = NULL;
- const char *prefix = setup_git_directory();
+ 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_BOOLEAN('i', "ignore-case", &opt.ignore_case,
+ "case insensitive matching"),
+ 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('q', "quiet", &opt.status_only,
+ "indicate hit with exit status without output"),
+ OPT_BOOLEAN(0, "all-match", &opt.all_match,
+ "show only matches from files that match all patterns"),
+ OPT_GROUP(""),
+ OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored,
+ "allow calling of grep(1) (ignored by this build)"),
+ { OPTION_CALLBACK, 0, "help-all", &options, NULL, "show usage",
+ PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback },
+ OPT_END()
+ };
+
+ /*
+ * 'git grep -h', unlike 'git grep -h <pattern>', is a request
+ * to show usage information and exit.
+ */
+ if (argc == 2 && !strcmp(argv[1], "-h"))
+ usage_with_options(grep_usage, options);
memset(&opt, 0, sizeof(opt));
+ opt.prefix = prefix;
+ opt.prefix_length = (prefix && *prefix) ? strlen(prefix) : 0;
+ opt.relative = 1;
+ opt.pathname = 1;
opt.pattern_tail = &opt.pattern_list;
+ opt.header_tail = &opt.header_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
* 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
- * unrecocnized non option is the beginning of the refs list
+ * 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);
- tail = &object_list;
- while (1 < argc) {
- const char *arg = argv[1];
- argc--; argv++;
- if (!strcmp("--cached", arg)) {
- cached = 1;
- continue;
- }
- if (!strcmp("-a", arg) ||
- !strcmp("--text", arg)) {
- opt.binary = GREP_BINARY_TEXT;
- continue;
- }
- if (!strcmp("-i", arg) ||
- !strcmp("--ignore-case", arg)) {
- opt.regflags |= REG_ICASE;
- continue;
- }
- if (!strcmp("-I", arg)) {
- opt.binary = GREP_BINARY_NOMATCH;
- continue;
- }
- if (!strcmp("-v", arg) ||
- !strcmp("--invert-match", arg)) {
- opt.invert = 1;
- continue;
- }
- if (!strcmp("-E", arg) ||
- !strcmp("--extended-regexp", arg)) {
- opt.regflags |= REG_EXTENDED;
- continue;
- }
- if (!strcmp("-F", arg) ||
- !strcmp("--fixed-strings", arg)) {
- opt.fixed = 1;
- continue;
- }
- if (!strcmp("-G", arg) ||
- !strcmp("--basic-regexp", arg)) {
- opt.regflags &= ~REG_EXTENDED;
- continue;
- }
- if (!strcmp("-n", arg)) {
- opt.linenum = 1;
- continue;
- }
- if (!strcmp("-H", arg)) {
- /* We always show the pathname, so this
- * is a noop.
- */
- continue;
- }
- if (!strcmp("-l", arg) ||
- !strcmp("--files-with-matches", arg)) {
- opt.name_only = 1;
- continue;
- }
- if (!strcmp("-L", arg) ||
- !strcmp("--files-without-match", arg)) {
- opt.unmatch_name_only = 1;
- continue;
- }
- if (!strcmp("-c", arg) ||
- !strcmp("--count", arg)) {
- opt.count = 1;
- continue;
- }
- if (!strcmp("-w", arg) ||
- !strcmp("--word-regexp", arg)) {
- opt.word_regexp = 1;
- continue;
- }
- if (!strncmp("-A", arg, 2) ||
- !strncmp("-B", arg, 2) ||
- !strncmp("-C", arg, 2) ||
- (arg[0] == '-' && '1' <= arg[1] && arg[1] <= '9')) {
- unsigned num;
- const char *scan;
- switch (arg[1]) {
- case 'A': case 'B': case 'C':
- if (!arg[2]) {
- if (argc <= 1)
- usage(builtin_grep_usage);
- scan = *++argv;
- argc--;
- }
- else
- scan = arg + 2;
- break;
- default:
- scan = arg + 1;
- break;
- }
- if (sscanf(scan, "%u", &num) != 1)
- usage(builtin_grep_usage);
- switch (arg[1]) {
- case 'A':
- opt.post_context = num;
- break;
- default:
- case 'C':
- opt.post_context = num;
- case 'B':
- opt.pre_context = num;
- break;
- }
- continue;
- }
- if (!strcmp("-f", arg)) {
- FILE *patterns;
- int lno = 0;
- char buf[1024];
- if (argc <= 1)
- usage(builtin_grep_usage);
- patterns = fopen(argv[1], "r");
- if (!patterns)
- die("'%s': %s", argv[1], strerror(errno));
- while (fgets(buf, sizeof(buf), patterns)) {
- int len = strlen(buf);
- if (buf[len-1] == '\n')
- buf[len-1] = 0;
- /* ignore empty line like grep does */
- if (!buf[0])
- continue;
- add_pattern(&opt, strdup(buf), argv[1], ++lno);
- }
- fclose(patterns);
- argv++;
- argc--;
- continue;
- }
- if (!strcmp("-e", arg)) {
- if (1 < argc) {
- add_pattern(&opt, argv[1], "-e option", 0);
- argv++;
- argc--;
- continue;
- }
- usage(builtin_grep_usage);
- }
- if (!strcmp("--", arg))
- break;
- if (*arg == '-')
- usage(builtin_grep_usage);
+ /*
+ * skip a -- separator; we know it cannot be
+ * separating revisions from pathnames if
+ * we haven't even had any patterns yet
+ */
+ if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
+ argv++;
+ argc--;
+ }
- /* First unrecognized non-option token */
- if (!opt.pattern_list) {
- add_pattern(&opt, arg, "command line", 0);
- break;
- }
- else {
- /* We are looking at the first path or rev;
- * it is found at argv[1] after leaving the
- * loop.
- */
- argc++; argv--;
- break;
- }
+ /* 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.pattern_list)
die("no pattern given.");
+ if (!opt.fixed && opt.ignore_case)
+ opt.regflags |= REG_ICASE;
if ((opt.regflags != REG_NEWLINE) && opt.fixed)
die("cannot mix --fixed-strings and regexp");
- if (!opt.fixed)
- compile_patterns(&opt);
+
+#ifndef NO_PTHREADS
+ if (online_cpus() == 1 || !grep_threads_ok(&opt))
+ use_threads = 0;
+
+ if (use_threads)
+ start_threads(&opt);
+#else
+ use_threads = 0;
+#endif
+
+ compile_grep_patterns(&opt);
/* Check revs and then paths */
- for (i = 1; i < argc; i++) {
+ 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);
- struct object_list *elem;
if (!object)
die("bad object %s", arg);
- elem = object_list_insert(object, tail);
- elem->name = arg;
- tail = &elem->next;
+ add_object_array(object, arg, &list);
continue;
}
if (!strcmp(arg, "--")) {
paths[1] = NULL;
}
- if (!object_list)
- return !grep_cache(&opt, paths, cached);
+ if (!list.nr) {
+ int hit;
+ if (!cached)
+ setup_work_tree();
+
+ hit = grep_cache(&opt, paths, cached);
+ if (use_threads)
+ hit |= wait_all();
+ return !hit;
+ }
if (cached)
die("both --cached and trees are given.");
- for (list = object_list; list; list = list->next) {
+ for (i = 0; i < list.nr; i++) {
struct object *real_obj;
- real_obj = deref_tag(list->item, NULL, 0);
- if (grep_object(&opt, paths, real_obj, list->name))
+ real_obj = deref_tag(list.objects[i].item, NULL, 0);
+ if (grep_object(&opt, paths, real_obj, list.objects[i].name)) {
hit = 1;
+ if (opt.status_only)
+ break;
+ }
}
+
+ if (use_threads)
+ hit |= wait_all();
+ free_grep_patterns(&opt);
return !hit;
}