e99d59ff0b
Fix various things that sparse complains about:
- use NULL instead of 0
- make sure we declare everything properly, or mark it static
- use proper function declarations ("fn(void)" instead of "fn()")
Sparse is always right.
348 lines
8.2 KiB
C
348 lines
8.2 KiB
C
/*
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* This merges the file listing in the directory cache index
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* with the actual working directory list, and shows different
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* combinations of the two.
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*
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* Copyright (C) Linus Torvalds, 2005
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*/
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#include <dirent.h>
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#include <fnmatch.h>
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#include "cache.h"
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static int show_deleted = 0;
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static int show_cached = 0;
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static int show_others = 0;
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static int show_ignored = 0;
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static int show_stage = 0;
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static int show_unmerged = 0;
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static int show_killed = 0;
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static int line_terminator = '\n';
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static const char *tag_cached = "";
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static const char *tag_unmerged = "";
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static const char *tag_removed = "";
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static const char *tag_other = "";
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static const char *tag_killed = "";
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static int nr_excludes;
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static const char **excludes;
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static int excludes_alloc;
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static void add_exclude(const char *string)
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{
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if (nr_excludes == excludes_alloc) {
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excludes_alloc = alloc_nr(excludes_alloc);
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excludes = realloc(excludes, excludes_alloc*sizeof(char *));
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}
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excludes[nr_excludes++] = string;
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}
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static void add_excludes_from_file(const char *fname)
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{
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int fd, i;
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long size;
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char *buf, *entry;
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fd = open(fname, O_RDONLY);
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if (fd < 0)
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goto err;
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size = lseek(fd, 0, SEEK_END);
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if (size < 0)
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goto err;
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lseek(fd, 0, SEEK_SET);
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if (size == 0) {
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close(fd);
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return;
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}
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buf = xmalloc(size);
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if (read(fd, buf, size) != size)
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goto err;
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close(fd);
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entry = buf;
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for (i = 0; i < size; i++) {
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if (buf[i] == '\n') {
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if (entry != buf + i) {
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buf[i] = 0;
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add_exclude(entry);
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}
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entry = buf + i + 1;
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}
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}
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return;
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err: perror(fname);
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exit(1);
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}
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static int excluded(const char *pathname)
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{
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int i;
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if (nr_excludes) {
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const char *basename = strrchr(pathname, '/');
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basename = (basename) ? basename+1 : pathname;
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for (i = 0; i < nr_excludes; i++)
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if (fnmatch(excludes[i], basename, 0) == 0)
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return 1;
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}
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return 0;
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}
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struct nond_on_fs {
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int len;
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char name[0];
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};
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static struct nond_on_fs **dir;
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static int nr_dir;
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static int dir_alloc;
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static void add_name(const char *pathname, int len)
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{
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struct nond_on_fs *ent;
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if (cache_name_pos(pathname, len) >= 0)
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return;
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if (nr_dir == dir_alloc) {
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dir_alloc = alloc_nr(dir_alloc);
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dir = xrealloc(dir, dir_alloc*sizeof(ent));
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}
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ent = xmalloc(sizeof(*ent) + len + 1);
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ent->len = len;
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memcpy(ent->name, pathname, len);
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dir[nr_dir++] = ent;
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}
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/*
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* Read a directory tree. We currently ignore anything but
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* directories, regular files and symlinks. That's because git
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* doesn't handle them at all yet. Maybe that will change some
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* day.
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*
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* Also, we currently ignore all names starting with a dot.
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* That likely will not change.
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*/
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static void read_directory(const char *path, const char *base, int baselen)
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{
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DIR *dir = opendir(path);
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if (dir) {
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struct dirent *de;
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char fullname[MAXPATHLEN + 1];
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memcpy(fullname, base, baselen);
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while ((de = readdir(dir)) != NULL) {
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int len;
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if (de->d_name[0] == '.')
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continue;
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if (excluded(de->d_name) != show_ignored)
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continue;
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len = strlen(de->d_name);
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memcpy(fullname + baselen, de->d_name, len+1);
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switch (DTYPE(de)) {
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struct stat st;
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default:
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continue;
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case DT_UNKNOWN:
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if (lstat(fullname, &st))
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continue;
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if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
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break;
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if (!S_ISDIR(st.st_mode))
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continue;
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/* fallthrough */
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case DT_DIR:
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memcpy(fullname + baselen + len, "/", 2);
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read_directory(fullname, fullname,
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baselen + len + 1);
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continue;
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case DT_REG:
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case DT_LNK:
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break;
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}
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add_name(fullname, baselen + len);
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}
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closedir(dir);
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}
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}
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static int cmp_name(const void *p1, const void *p2)
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{
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const struct nond_on_fs *e1 = *(const struct nond_on_fs **)p1;
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const struct nond_on_fs *e2 = *(const struct nond_on_fs **)p2;
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return cache_name_compare(e1->name, e1->len,
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e2->name, e2->len);
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}
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static void show_killed_files(void)
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{
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int i;
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for (i = 0; i < nr_dir; i++) {
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struct nond_on_fs *ent = dir[i];
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char *cp, *sp;
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int pos, len, killed = 0;
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for (cp = ent->name; cp - ent->name < ent->len; cp = sp + 1) {
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sp = strchr(cp, '/');
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if (!sp) {
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/* If ent->name is prefix of an entry in the
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* cache, it will be killed.
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*/
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pos = cache_name_pos(ent->name, ent->len);
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if (0 <= pos)
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die("bug in show-killed-files");
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pos = -pos - 1;
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while (pos < active_nr &&
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ce_stage(active_cache[pos]))
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pos++; /* skip unmerged */
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if (active_nr <= pos)
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break;
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/* pos points at a name immediately after
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* ent->name in the cache. Does it expect
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* ent->name to be a directory?
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*/
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len = ce_namelen(active_cache[pos]);
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if ((ent->len < len) &&
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!strncmp(active_cache[pos]->name,
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ent->name, ent->len) &&
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active_cache[pos]->name[ent->len] == '/')
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killed = 1;
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break;
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}
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if (0 <= cache_name_pos(ent->name, sp - ent->name)) {
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/* If any of the leading directories in
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* ent->name is registered in the cache,
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* ent->name will be killed.
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*/
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killed = 1;
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break;
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}
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}
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if (killed)
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printf("%s%.*s%c", tag_killed,
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dir[i]->len, dir[i]->name,
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line_terminator);
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}
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}
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static void show_files(void)
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{
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int i;
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/* For cached/deleted files we don't need to even do the readdir */
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if (show_others || show_killed) {
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read_directory(".", "", 0);
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qsort(dir, nr_dir, sizeof(struct nond_on_fs *), cmp_name);
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if (show_others)
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for (i = 0; i < nr_dir; i++)
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printf("%s%.*s%c", tag_other,
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dir[i]->len, dir[i]->name,
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line_terminator);
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if (show_killed)
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show_killed_files();
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}
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if (show_cached | show_stage) {
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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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if (excluded(ce->name) != show_ignored)
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continue;
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if (show_unmerged && !ce_stage(ce))
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continue;
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if (!show_stage)
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printf("%s%s%c",
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ce_stage(ce) ? tag_unmerged :
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tag_cached,
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ce->name, line_terminator);
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else
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printf("%s%06o %s %d %s%c",
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ce_stage(ce) ? tag_unmerged :
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tag_cached,
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ntohl(ce->ce_mode),
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sha1_to_hex(ce->sha1),
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ce_stage(ce),
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ce->name, line_terminator);
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}
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}
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if (show_deleted) {
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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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struct stat st;
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if (excluded(ce->name) != show_ignored)
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continue;
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if (!lstat(ce->name, &st))
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continue;
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printf("%s%s%c", tag_removed, ce->name,
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line_terminator);
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}
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}
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}
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static const char *ls_files_usage =
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"git-ls-files [-z] [-t] (--[cached|deleted|others|stage|unmerged|killed])* "
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"[ --ignored [--exclude=<pattern>] [--exclude-from=<file>) ]";
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int main(int argc, char **argv)
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{
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int i;
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for (i = 1; i < argc; i++) {
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char *arg = argv[i];
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if (!strcmp(arg, "-z")) {
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line_terminator = 0;
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} else if (!strcmp(arg, "-t")) {
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tag_cached = "H ";
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tag_unmerged = "M ";
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tag_removed = "R ";
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tag_other = "? ";
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tag_killed = "K ";
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} else if (!strcmp(arg, "-c") || !strcmp(arg, "--cached")) {
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show_cached = 1;
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} else if (!strcmp(arg, "-d") || !strcmp(arg, "--deleted")) {
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show_deleted = 1;
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} else if (!strcmp(arg, "-o") || !strcmp(arg, "--others")) {
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show_others = 1;
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} else if (!strcmp(arg, "-i") || !strcmp(arg, "--ignored")) {
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show_ignored = 1;
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} else if (!strcmp(arg, "-s") || !strcmp(arg, "--stage")) {
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show_stage = 1;
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} else if (!strcmp(arg, "-k") || !strcmp(arg, "--killed")) {
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show_killed = 1;
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} else if (!strcmp(arg, "-u") || !strcmp(arg, "--unmerged")) {
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/* There's no point in showing unmerged unless
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* you also show the stage information.
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*/
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show_stage = 1;
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show_unmerged = 1;
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} else if (!strcmp(arg, "-x") && i+1 < argc) {
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add_exclude(argv[++i]);
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} else if (!strncmp(arg, "--exclude=", 10)) {
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add_exclude(arg+10);
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} else if (!strcmp(arg, "-X") && i+1 < argc) {
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add_excludes_from_file(argv[++i]);
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} else if (!strncmp(arg, "--exclude-from=", 15)) {
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add_excludes_from_file(arg+15);
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} else
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usage(ls_files_usage);
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}
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if (show_ignored && !nr_excludes) {
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fprintf(stderr, "%s: --ignored needs some exclude pattern\n",
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argv[0]);
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exit(1);
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}
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/* With no flags, we default to showing the cached files */
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if (!(show_stage | show_deleted | show_others | show_unmerged | show_killed))
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show_cached = 1;
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read_cache();
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show_files();
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return 0;
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}
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