6ca4594312
When checkout-cache attempts to check out a non-directory where a directory exists on the work tree, or to check out a file under directory D when path D is a non-directory on the work tree, the attempt fails. Before running checkout-cache, the user can run git-ls-files with the -k (killed) option to get a list of such paths. The tagged output format uses "K" to denote them. This is useful for Porcelain layer to be careful when dealing with the recently corrected behaviour of checkout-cache. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Petr Baudis <pasky@ucw.cz>
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()
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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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"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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