mirror of
https://github.com/git/git.git
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128a9d86da
* rs/grep-p: grep: simplify -p output grep -p: support user defined regular expressions grep: add option -p/--show-function grep: handle pre context lines on demand grep: print context hunk marks between files grep: move context hunk mark handling into show_line() userdiff: add xdiff_clear_find_func()
867 lines
22 KiB
C
867 lines
22 KiB
C
/*
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* Builtin "git grep"
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*
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* Copyright (c) 2006 Junio C Hamano
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*/
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#include "cache.h"
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#include "blob.h"
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#include "tree.h"
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#include "commit.h"
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#include "tag.h"
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#include "tree-walk.h"
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#include "builtin.h"
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#include "parse-options.h"
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#include "userdiff.h"
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#include "grep.h"
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#ifndef NO_EXTERNAL_GREP
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#ifdef __unix__
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#define NO_EXTERNAL_GREP 0
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#else
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#define NO_EXTERNAL_GREP 1
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#endif
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#endif
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static char const * const grep_usage[] = {
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"git grep [options] [-e] <pattern> [<rev>...] [[--] path...]",
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NULL
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};
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static int grep_config(const char *var, const char *value, void *cb)
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{
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struct grep_opt *opt = cb;
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switch (userdiff_config(var, value)) {
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case 0: break;
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case -1: return -1;
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default: return 0;
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}
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if (!strcmp(var, "color.grep")) {
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opt->color = git_config_colorbool(var, value, -1);
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return 0;
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}
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if (!strcmp(var, "color.grep.external"))
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return git_config_string(&(opt->color_external), var, value);
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if (!strcmp(var, "color.grep.match")) {
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if (!value)
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return config_error_nonbool(var);
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color_parse(value, var, opt->color_match);
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return 0;
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}
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return git_color_default_config(var, value, cb);
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}
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/*
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* git grep pathspecs are somewhat different from diff-tree pathspecs;
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* pathname wildcards are allowed.
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*/
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static int pathspec_matches(const char **paths, const char *name)
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{
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int namelen, i;
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if (!paths || !*paths)
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return 1;
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namelen = strlen(name);
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for (i = 0; paths[i]; i++) {
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const char *match = paths[i];
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int matchlen = strlen(match);
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const char *cp, *meta;
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if (!matchlen ||
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((matchlen <= namelen) &&
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!strncmp(name, match, matchlen) &&
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(match[matchlen-1] == '/' ||
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name[matchlen] == '\0' || name[matchlen] == '/')))
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return 1;
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if (!fnmatch(match, name, 0))
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return 1;
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if (name[namelen-1] != '/')
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continue;
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/* We are being asked if the directory ("name") is worth
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* descending into.
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*
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* Find the longest leading directory name that does
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* not have metacharacter in the pathspec; the name
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* we are looking at must overlap with that directory.
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*/
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for (cp = match, meta = NULL; cp - match < matchlen; cp++) {
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char ch = *cp;
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if (ch == '*' || ch == '[' || ch == '?') {
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meta = cp;
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break;
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}
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}
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if (!meta)
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meta = cp; /* fully literal */
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if (namelen <= meta - match) {
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/* Looking at "Documentation/" and
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* the pattern says "Documentation/howto/", or
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* "Documentation/diff*.txt". The name we
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* have should match prefix.
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*/
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if (!memcmp(match, name, namelen))
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return 1;
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continue;
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}
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if (meta - match < namelen) {
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/* Looking at "Documentation/howto/" and
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* the pattern says "Documentation/h*";
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* match up to "Do.../h"; this avoids descending
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* into "Documentation/technical/".
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*/
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if (!memcmp(match, name, meta - match))
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return 1;
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continue;
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}
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}
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return 0;
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}
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static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name, int tree_name_len)
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{
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unsigned long size;
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char *data;
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enum object_type type;
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char *to_free = NULL;
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int hit;
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data = read_sha1_file(sha1, &type, &size);
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if (!data) {
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error("'%s': unable to read %s", name, sha1_to_hex(sha1));
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return 0;
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}
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if (opt->relative && opt->prefix_length) {
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static char name_buf[PATH_MAX];
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char *cp;
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int name_len = strlen(name) - opt->prefix_length + 1;
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if (!tree_name_len)
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name += opt->prefix_length;
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else {
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if (ARRAY_SIZE(name_buf) <= name_len)
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cp = to_free = xmalloc(name_len);
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else
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cp = name_buf;
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memcpy(cp, name, tree_name_len);
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strcpy(cp + tree_name_len,
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name + tree_name_len + opt->prefix_length);
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name = cp;
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}
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}
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hit = grep_buffer(opt, name, data, size);
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free(data);
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free(to_free);
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return hit;
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}
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static int grep_file(struct grep_opt *opt, const char *filename)
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{
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struct stat st;
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int i;
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char *data;
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size_t sz;
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if (lstat(filename, &st) < 0) {
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err_ret:
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if (errno != ENOENT)
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error("'%s': %s", filename, strerror(errno));
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return 0;
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}
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if (!st.st_size)
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return 0; /* empty file -- no grep hit */
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if (!S_ISREG(st.st_mode))
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return 0;
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sz = xsize_t(st.st_size);
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i = open(filename, O_RDONLY);
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if (i < 0)
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goto err_ret;
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data = xmalloc(sz + 1);
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if (st.st_size != read_in_full(i, data, sz)) {
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error("'%s': short read %s", filename, strerror(errno));
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close(i);
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free(data);
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return 0;
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}
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close(i);
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if (opt->relative && opt->prefix_length)
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filename += opt->prefix_length;
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i = grep_buffer(opt, filename, data, sz);
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free(data);
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return i;
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}
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#if !NO_EXTERNAL_GREP
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static int exec_grep(int argc, const char **argv)
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{
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pid_t pid;
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int status;
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argv[argc] = NULL;
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pid = fork();
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if (pid < 0)
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return pid;
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if (!pid) {
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execvp("grep", (char **) argv);
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exit(255);
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}
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while (waitpid(pid, &status, 0) < 0) {
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if (errno == EINTR)
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continue;
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return -1;
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}
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if (WIFEXITED(status)) {
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if (!WEXITSTATUS(status))
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return 1;
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return 0;
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}
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return -1;
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}
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#define MAXARGS 1000
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#define ARGBUF 4096
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#define push_arg(a) do { \
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if (nr < MAXARGS) argv[nr++] = (a); \
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else die("maximum number of args exceeded"); \
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} while (0)
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/*
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* If you send a singleton filename to grep, it does not give
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* the name of the file. GNU grep has "-H" but we would want
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* that behaviour in a portable way.
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*
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* So we keep two pathnames in argv buffer unsent to grep in
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* the main loop if we need to do more than one grep.
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*/
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static int flush_grep(struct grep_opt *opt,
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int argc, int arg0, const char **argv, int *kept)
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{
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int status;
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int count = argc - arg0;
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const char *kept_0 = NULL;
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if (count <= 2) {
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/*
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* Because we keep at least 2 paths in the call from
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* the main loop (i.e. kept != NULL), and MAXARGS is
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* far greater than 2, this usually is a call to
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* conclude the grep. However, the user could attempt
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* to overflow the argv buffer by giving too many
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* options to leave very small number of real
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* arguments even for the call in the main loop.
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*/
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if (kept)
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die("insanely many options to grep");
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/*
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* If we have two or more paths, we do not have to do
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* anything special, but we need to push /dev/null to
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* get "-H" behaviour of GNU grep portably but when we
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* are not doing "-l" nor "-L" nor "-c".
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*/
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if (count == 1 &&
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!opt->name_only &&
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!opt->unmatch_name_only &&
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!opt->count) {
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argv[argc++] = "/dev/null";
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argv[argc] = NULL;
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}
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}
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else if (kept) {
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/*
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* Called because we found many paths and haven't finished
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* iterating over the cache yet. We keep two paths
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* for the concluding call. argv[argc-2] and argv[argc-1]
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* has the last two paths, so save the first one away,
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* replace it with NULL while sending the list to grep,
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* and recover them after we are done.
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*/
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*kept = 2;
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kept_0 = argv[argc-2];
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argv[argc-2] = NULL;
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argc -= 2;
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}
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if (opt->pre_context || opt->post_context) {
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/*
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* grep handles hunk marks between files, but we need to
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* do that ourselves between multiple calls.
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*/
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if (opt->show_hunk_mark)
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write_or_die(1, "--\n", 3);
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else
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opt->show_hunk_mark = 1;
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}
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status = exec_grep(argc, argv);
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if (kept_0) {
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/*
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* Then recover them. Now the last arg is beyond the
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* terminating NULL which is at argc, and the second
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* from the last is what we saved away in kept_0
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*/
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argv[arg0++] = kept_0;
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argv[arg0] = argv[argc+1];
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}
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return status;
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}
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static void grep_add_color(struct strbuf *sb, const char *escape_seq)
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{
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size_t orig_len = sb->len;
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while (*escape_seq) {
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if (*escape_seq == 'm')
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strbuf_addch(sb, ';');
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else if (*escape_seq != '\033' && *escape_seq != '[')
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strbuf_addch(sb, *escape_seq);
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escape_seq++;
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}
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if (sb->len > orig_len && sb->buf[sb->len - 1] == ';')
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strbuf_setlen(sb, sb->len - 1);
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}
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static int external_grep(struct grep_opt *opt, const char **paths, int cached)
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{
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int i, nr, argc, hit, len, status;
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const char *argv[MAXARGS+1];
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char randarg[ARGBUF];
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char *argptr = randarg;
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struct grep_pat *p;
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if (opt->extended || (opt->relative && opt->prefix_length))
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return -1;
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len = nr = 0;
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push_arg("grep");
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if (opt->fixed)
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push_arg("-F");
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if (opt->linenum)
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push_arg("-n");
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if (!opt->pathname)
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push_arg("-h");
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if (opt->regflags & REG_EXTENDED)
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push_arg("-E");
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if (opt->regflags & REG_ICASE)
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push_arg("-i");
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if (opt->binary == GREP_BINARY_NOMATCH)
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push_arg("-I");
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if (opt->word_regexp)
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push_arg("-w");
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if (opt->name_only)
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push_arg("-l");
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if (opt->unmatch_name_only)
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push_arg("-L");
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if (opt->null_following_name)
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/* in GNU grep git's "-z" translates to "-Z" */
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push_arg("-Z");
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if (opt->count)
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push_arg("-c");
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if (opt->post_context || opt->pre_context) {
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if (opt->post_context != opt->pre_context) {
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if (opt->pre_context) {
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push_arg("-B");
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len += snprintf(argptr, sizeof(randarg)-len,
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"%u", opt->pre_context) + 1;
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if (sizeof(randarg) <= len)
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die("maximum length of args exceeded");
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push_arg(argptr);
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argptr += len;
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}
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if (opt->post_context) {
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push_arg("-A");
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len += snprintf(argptr, sizeof(randarg)-len,
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"%u", opt->post_context) + 1;
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if (sizeof(randarg) <= len)
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die("maximum length of args exceeded");
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push_arg(argptr);
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argptr += len;
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}
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}
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else {
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push_arg("-C");
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len += snprintf(argptr, sizeof(randarg)-len,
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"%u", opt->post_context) + 1;
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if (sizeof(randarg) <= len)
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die("maximum length of args exceeded");
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push_arg(argptr);
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argptr += len;
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}
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}
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for (p = opt->pattern_list; p; p = p->next) {
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push_arg("-e");
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push_arg(p->pattern);
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}
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if (opt->color) {
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struct strbuf sb = STRBUF_INIT;
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grep_add_color(&sb, opt->color_match);
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setenv("GREP_COLOR", sb.buf, 1);
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strbuf_reset(&sb);
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strbuf_addstr(&sb, "mt=");
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grep_add_color(&sb, opt->color_match);
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strbuf_addstr(&sb, ":sl=:cx=:fn=:ln=:bn=:se=");
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setenv("GREP_COLORS", sb.buf, 1);
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strbuf_release(&sb);
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if (opt->color_external && strlen(opt->color_external) > 0)
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push_arg(opt->color_external);
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}
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hit = 0;
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argc = nr;
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for (i = 0; i < active_nr; i++) {
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struct cache_entry *ce = active_cache[i];
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char *name;
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int kept;
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if (!S_ISREG(ce->ce_mode))
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continue;
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if (!pathspec_matches(paths, ce->name))
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continue;
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name = ce->name;
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if (name[0] == '-') {
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int len = ce_namelen(ce);
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name = xmalloc(len + 3);
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memcpy(name, "./", 2);
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memcpy(name + 2, ce->name, len + 1);
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}
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argv[argc++] = name;
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if (MAXARGS <= argc) {
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status = flush_grep(opt, argc, nr, argv, &kept);
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if (0 < status)
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hit = 1;
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argc = nr + kept;
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}
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if (ce_stage(ce)) {
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do {
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i++;
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} while (i < active_nr &&
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!strcmp(ce->name, active_cache[i]->name));
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i--; /* compensate for loop control */
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}
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}
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if (argc > nr) {
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status = flush_grep(opt, argc, nr, argv, NULL);
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if (0 < status)
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hit = 1;
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}
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return hit;
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}
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#endif
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static int grep_cache(struct grep_opt *opt, const char **paths, int cached,
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int external_grep_allowed)
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{
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int hit = 0;
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int nr;
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read_cache();
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#if !NO_EXTERNAL_GREP
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/*
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* Use the external "grep" command for the case where
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* we grep through the checked-out files. It tends to
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* be a lot more optimized
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*/
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if (!cached && external_grep_allowed) {
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hit = external_grep(opt, paths, cached);
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if (hit >= 0)
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return hit;
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}
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#endif
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for (nr = 0; nr < active_nr; nr++) {
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struct cache_entry *ce = active_cache[nr];
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if (!S_ISREG(ce->ce_mode))
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continue;
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if (!pathspec_matches(paths, ce->name))
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continue;
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/*
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* If CE_VALID is on, we assume worktree file and its cache entry
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* are identical, even if worktree file has been modified, so use
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* cache version instead
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*/
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if (cached || (ce->ce_flags & CE_VALID)) {
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if (ce_stage(ce))
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continue;
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hit |= grep_sha1(opt, ce->sha1, ce->name, 0);
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}
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else
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hit |= grep_file(opt, ce->name);
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if (ce_stage(ce)) {
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do {
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nr++;
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} while (nr < active_nr &&
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!strcmp(ce->name, active_cache[nr]->name));
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nr--; /* compensate for loop control */
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}
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}
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free_grep_patterns(opt);
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return hit;
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}
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|
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static int grep_tree(struct grep_opt *opt, const char **paths,
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struct tree_desc *tree,
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const char *tree_name, const char *base)
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{
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int len;
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int hit = 0;
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struct name_entry entry;
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char *down;
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int tn_len = strlen(tree_name);
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struct strbuf pathbuf;
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strbuf_init(&pathbuf, PATH_MAX + tn_len);
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if (tn_len) {
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strbuf_add(&pathbuf, tree_name, tn_len);
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strbuf_addch(&pathbuf, ':');
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tn_len = pathbuf.len;
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}
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strbuf_addstr(&pathbuf, base);
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len = pathbuf.len;
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|
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while (tree_entry(tree, &entry)) {
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int te_len = tree_entry_len(entry.path, entry.sha1);
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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))
|
|
;
|
|
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),
|
|
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;
|
|
|
|
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;
|
|
}
|