#include "grep.h"
#include "quote.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
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);
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->ignore_case)
- 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);
- } else {
- unsetenv("GREP_COLOR");
- unsetenv("GREP_COLORS");
- }
- unsetenv("GREP_OPTIONS");
-
- 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)
+static int grep_cache(struct grep_opt *opt, const char **paths, int cached)
{
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;
- hit = 0;
- }
-#endif
-
for (nr = 0; nr < active_nr; nr++) {
struct cache_entry *ce = active_cache[nr];
if (!S_ISREG(ce->ce_mode))
{
int hit = 0;
int cached = 0;
- int external_grep_allowed = 1;
int seen_dashdash = 0;
+ int external_grep_allowed__ignored;
struct grep_opt opt;
struct object_array list = { 0, 0, NULL };
const char **paths = NULL;
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
+ 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()
argc--;
}
- if ((opt.color && !opt.color_external) || opt.funcname)
- external_grep_allowed = 0;
if (!opt.pattern_list)
die("no pattern given.");
if (!opt.fixed && opt.ignore_case)
if (!list.nr) {
if (!cached)
setup_work_tree();
- return !grep_cache(&opt, paths, cached, external_grep_allowed);
+ return !grep_cache(&opt, paths, cached);
}
if (cached)