*
* Careful: order of argument flags does matter. For example,
*
- * checkout-cache -a -f file.c
+ * git-checkout-cache -a -f file.c
*
* Will first check out all files listed in the cache (but not
* overwrite any old ones), and then force-checkout "file.c" a
* second time (ie that one _will_ overwrite any old contents
* with the same filename).
*
- * Also, just doing "checkout-cache" does nothing. You probably
- * meant "checkout-cache -a". And if you want to force it, you
- * want "checkout-cache -f -a".
+ * Also, just doing "git-checkout-cache" does nothing. You probably
+ * meant "git-checkout-cache -a". And if you want to force it, you
+ * want "git-checkout-cache -f -a".
*
* Intuitiveness is not the goal here. Repeatability is. The
* reason for the "no arguments means no work" thing is that
* from scripts you are supposed to be able to do things like
*
- * find . -name '*.h' -print0 | xargs -0 checkout-cache -f --
+ * find . -name '*.h' -print0 | xargs -0 git-checkout-cache -f --
*
* which will force all existing *.h files to be replaced with
* their cached copies. If an empty command line implied "all",
* of "-a" causing problems (not possible in the above example,
* but get used to it in scripting!).
*/
+#include <sys/types.h>
+#include <dirent.h>
#include "cache.h"
-static int force = 0, quiet = 0;
+static int force = 0, quiet = 0, not_new = 0, refresh_cache = 0;
+static const char *base_dir = "";
+static int base_dir_len = 0;
static void create_directories(const char *path)
{
int len = strlen(path);
- char *buf = malloc(len + 1);
+ char *buf = xmalloc(len + 1);
const char *slash = path;
while ((slash = strchr(slash+1, '/')) != NULL) {
len = slash - path;
memcpy(buf, path, len);
buf[len] = 0;
- mkdir(buf, 0755);
+ if (mkdir(buf, 0755)) {
+ if (errno == EEXIST) {
+ struct stat st;
+ if (len > base_dir_len && force && !unlink(buf) && !mkdir(buf, 0755))
+ continue;
+ if (!stat(buf, &st) && S_ISDIR(st.st_mode))
+ continue; /* ok */
+ }
+ die("cannot create directory at %s", buf);
+ }
}
+ free(buf);
+}
+
+static void remove_subtree(const char *path)
+{
+ DIR *dir = opendir(path);
+ struct dirent *de;
+ char pathbuf[PATH_MAX];
+ char *name;
+
+ if (!dir)
+ die("cannot opendir %s", path);
+ strcpy(pathbuf, path);
+ name = pathbuf + strlen(path);
+ *name++ = '/';
+ while ((de = readdir(dir)) != NULL) {
+ struct stat st;
+ if ((de->d_name[0] == '.') &&
+ ((de->d_name[1] == 0) ||
+ ((de->d_name[1] == '.') && de->d_name[2] == 0)))
+ continue;
+ strcpy(name, de->d_name);
+ if (lstat(pathbuf, &st))
+ die("cannot lstat %s", pathbuf);
+ if (S_ISDIR(st.st_mode))
+ remove_subtree(pathbuf);
+ else if (unlink(pathbuf))
+ die("cannot unlink %s", pathbuf);
+ }
+ closedir(dir);
+ if (rmdir(path))
+ die("cannot rmdir %s", path);
}
static int create_file(const char *path, unsigned int mode)
int fd;
mode = (mode & 0100) ? 0777 : 0666;
+ create_directories(path);
fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
if (fd < 0) {
- if (errno == ENOENT) {
- create_directories(path);
+ if (errno == EISDIR && force) {
+ remove_subtree(path);
fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, mode);
}
}
unsigned long size;
long wrote;
char type[20];
+ char target[1024];
new = read_sha1_file(ce->sha1, type, &size);
if (!new || strcmp(type, "blob")) {
- return error("checkout-cache: unable to read sha1 file of %s (%s)",
+ if (new)
+ free(new);
+ return error("git-checkout-cache: unable to read sha1 file of %s (%s)",
path, sha1_to_hex(ce->sha1));
}
- fd = create_file(path, ntohl(ce->ce_mode));
- if (fd < 0) {
+ switch (ntohl(ce->ce_mode) & S_IFMT) {
+ case S_IFREG:
+ fd = create_file(path, ntohl(ce->ce_mode));
+ if (fd < 0) {
+ free(new);
+ return error("git-checkout-cache: unable to create file %s (%s)",
+ path, strerror(errno));
+ }
+ wrote = write(fd, new, size);
+ close(fd);
+ free(new);
+ if (wrote != size)
+ return error("git-checkout-cache: unable to write file %s", path);
+ break;
+ case S_IFLNK:
+ memcpy(target, new, size);
+ target[size] = '\0';
+ create_directories(path);
+ if (symlink(target, path)) {
+ free(new);
+ return error("git-checkout-cache: unable to create symlink %s (%s)",
+ path, strerror(errno));
+ }
free(new);
- return error("checkout-cache: unable to create %s (%s)",
- path, strerror(errno));
+ break;
+ default:
+ free(new);
+ return error("git-checkout-cache: unknown file mode for %s", path);
+ }
+
+ if (refresh_cache) {
+ struct stat st;
+ lstat(ce->name, &st);
+ fill_stat_cache_info(ce, &st);
}
- wrote = write(fd, new, size);
- close(fd);
- free(new);
- if (wrote != size)
- return error("checkout-cache: unable to write %s", path);
return 0;
}
-static int checkout_entry(struct cache_entry *ce, const char *base_dir)
+static int checkout_entry(struct cache_entry *ce)
{
struct stat st;
static char path[MAXPATHLEN+1];
- int len = strlen(base_dir);
+ int len = base_dir_len;
memcpy(path, base_dir, len);
strcpy(path + len, ce->name);
- if (!stat(path, &st)) {
- unsigned changed = cache_match_stat(ce, &st);
+ if (!lstat(path, &st)) {
+ unsigned changed = ce_match_stat(ce, &st);
if (!changed)
return 0;
if (!force) {
if (!quiet)
- fprintf(stderr, "checkout-cache: %s already exists\n", path);
+ fprintf(stderr, "git-checkout-cache: %s already exists\n", path);
return 0;
}
* just do the right thing)
*/
unlink(path);
- }
+ } else if (not_new)
+ return 0;
return write_entry(ce, path);
}
-static int checkout_file(const char *name, const char *base_dir)
+static int checkout_file(const char *name)
{
int pos = cache_name_pos(name, strlen(name));
if (pos < 0) {
if (!quiet) {
pos = -pos - 1;
fprintf(stderr,
- "checkout-cache: %s is %s.\n",
+ "git-checkout-cache: %s is %s.\n",
name,
(pos < active_nr &&
!strcmp(active_cache[pos]->name, name)) ?
}
return -1;
}
- return checkout_entry(active_cache[pos], base_dir);
+ return checkout_entry(active_cache[pos]);
}
-static int checkout_all(const char *base_dir)
+static int checkout_all(void)
{
int i;
struct cache_entry *ce = active_cache[i];
if (ce_stage(ce))
continue;
- if (checkout_entry(ce, base_dir) < 0)
+ if (checkout_entry(ce) < 0)
return -1;
}
return 0;
int main(int argc, char **argv)
{
int i, force_filename = 0;
- const char *base_dir = "";
+ struct cache_file cache_file;
+ int newfd = -1;
if (read_cache() < 0) {
die("invalid cache");
const char *arg = argv[i];
if (!force_filename) {
if (!strcmp(arg, "-a")) {
- checkout_all(base_dir);
+ checkout_all();
continue;
}
if (!strcmp(arg, "--")) {
quiet = 1;
continue;
}
+ if (!strcmp(arg, "-n")) {
+ not_new = 1;
+ continue;
+ }
+ if (!strcmp(arg, "-u")) {
+ refresh_cache = 1;
+ if (newfd < 0)
+ newfd = hold_index_file_for_update
+ (&cache_file,
+ get_index_file());
+ if (newfd < 0)
+ die("cannot open index.lock file.");
+ continue;
+ }
if (!memcmp(arg, "--prefix=", 9)) {
base_dir = arg+9;
+ base_dir_len = strlen(base_dir);
continue;
}
}
- checkout_file(arg, base_dir);
+ if (base_dir_len) {
+ /* when --prefix is specified we do not
+ * want to update cache.
+ */
+ if (refresh_cache) {
+ close(newfd); newfd = -1;
+ rollback_index_file(&cache_file);
+ }
+ refresh_cache = 0;
+ }
+ checkout_file(arg);
}
+
+ if (0 <= newfd &&
+ (write_cache(newfd, active_cache, active_nr) ||
+ commit_index_file(&cache_file)))
+ die("Unable to write new cachefile");
return 0;
}