mirror of
https://github.com/git/git
synced 2024-08-27 11:39:22 +00:00
![Junio C Hamano](/assets/img/avatar_default.png)
* 'jc/attr': (28 commits) lockfile: record the primary process. convert.c: restructure the attribute checking part. Fix bogus linked-list management for user defined merge drivers. Simplify calling of CR/LF conversion routines Document gitattributes(5) Update 'crlf' attribute semantics. Documentation: support manual section (5) - file formats. Simplify code to find recursive merge driver. Counto-fix in merge-recursive Fix funny types used in attribute value representation Allow low-level driver to specify different behaviour during internal merge. Custom low-level merge driver: change the configuration scheme. Allow the default low-level merge driver to be configured. Custom low-level merge driver support. Add a demonstration/test of customized merge. Allow specifying specialized merge-backend per path. merge-recursive: separate out xdl_merge() interface. Allow more than true/false to attributes. Document git-check-attr Change attribute negation marker from '!' to '-'. ...
208 lines
5 KiB
C
208 lines
5 KiB
C
#include "cache.h"
|
|
#include "blob.h"
|
|
|
|
static void create_directories(const char *path, struct checkout *state)
|
|
{
|
|
int len = strlen(path);
|
|
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;
|
|
if (mkdir(buf, 0777)) {
|
|
if (errno == EEXIST) {
|
|
struct stat st;
|
|
if (len > state->base_dir_len && state->force && !unlink(buf) && !mkdir(buf, 0777))
|
|
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)
|
|
{
|
|
mode = (mode & 0100) ? 0777 : 0666;
|
|
return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
|
|
}
|
|
|
|
static void *read_blob_entry(struct cache_entry *ce, const char *path, unsigned long *size)
|
|
{
|
|
enum object_type type;
|
|
void *new = read_sha1_file(ce->sha1, &type, size);
|
|
|
|
if (new) {
|
|
if (type == OBJ_BLOB)
|
|
return new;
|
|
free(new);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static int write_entry(struct cache_entry *ce, char *path, struct checkout *state, int to_tempfile)
|
|
{
|
|
int fd;
|
|
long wrote;
|
|
|
|
switch (ntohl(ce->ce_mode) & S_IFMT) {
|
|
char *buf, *new;
|
|
unsigned long size;
|
|
|
|
case S_IFREG:
|
|
new = read_blob_entry(ce, path, &size);
|
|
if (!new)
|
|
return error("git-checkout-index: unable to read sha1 file of %s (%s)",
|
|
path, sha1_to_hex(ce->sha1));
|
|
if (to_tempfile) {
|
|
strcpy(path, ".merge_file_XXXXXX");
|
|
fd = mkstemp(path);
|
|
} else
|
|
fd = create_file(path, ntohl(ce->ce_mode));
|
|
if (fd < 0) {
|
|
free(new);
|
|
return error("git-checkout-index: unable to create file %s (%s)",
|
|
path, strerror(errno));
|
|
}
|
|
|
|
/*
|
|
* Convert from git internal format to working tree format
|
|
*/
|
|
buf = convert_to_working_tree(ce->name, new, &size);
|
|
if (buf) {
|
|
free(new);
|
|
new = buf;
|
|
}
|
|
|
|
wrote = write_in_full(fd, new, size);
|
|
close(fd);
|
|
free(new);
|
|
if (wrote != size)
|
|
return error("git-checkout-index: unable to write file %s", path);
|
|
break;
|
|
case S_IFLNK:
|
|
new = read_blob_entry(ce, path, &size);
|
|
if (!new)
|
|
return error("git-checkout-index: unable to read sha1 file of %s (%s)",
|
|
path, sha1_to_hex(ce->sha1));
|
|
if (to_tempfile || !has_symlinks) {
|
|
if (to_tempfile) {
|
|
strcpy(path, ".merge_link_XXXXXX");
|
|
fd = mkstemp(path);
|
|
} else
|
|
fd = create_file(path, 0666);
|
|
if (fd < 0) {
|
|
free(new);
|
|
return error("git-checkout-index: unable to create "
|
|
"file %s (%s)", path, strerror(errno));
|
|
}
|
|
wrote = write_in_full(fd, new, size);
|
|
close(fd);
|
|
free(new);
|
|
if (wrote != size)
|
|
return error("git-checkout-index: unable to write file %s",
|
|
path);
|
|
} else {
|
|
wrote = symlink(new, path);
|
|
free(new);
|
|
if (wrote)
|
|
return error("git-checkout-index: unable to create "
|
|
"symlink %s (%s)", path, strerror(errno));
|
|
}
|
|
break;
|
|
case S_IFDIRLNK:
|
|
if (to_tempfile)
|
|
return error("git-checkout-index: cannot create temporary subproject %s", path);
|
|
if (mkdir(path, 0777) < 0)
|
|
return error("git-checkout-index: cannot create subproject directory %s", path);
|
|
break;
|
|
default:
|
|
return error("git-checkout-index: unknown file mode for %s", path);
|
|
}
|
|
|
|
if (state->refresh_cache) {
|
|
struct stat st;
|
|
lstat(ce->name, &st);
|
|
fill_stat_cache_info(ce, &st);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int checkout_entry(struct cache_entry *ce, struct checkout *state, char *topath)
|
|
{
|
|
static char path[PATH_MAX + 1];
|
|
struct stat st;
|
|
int len = state->base_dir_len;
|
|
|
|
if (topath)
|
|
return write_entry(ce, topath, state, 1);
|
|
|
|
memcpy(path, state->base_dir, len);
|
|
strcpy(path + len, ce->name);
|
|
|
|
if (!lstat(path, &st)) {
|
|
unsigned changed = ce_match_stat(ce, &st, 1);
|
|
if (!changed)
|
|
return 0;
|
|
if (!state->force) {
|
|
if (!state->quiet)
|
|
fprintf(stderr, "git-checkout-index: %s already exists\n", path);
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* We unlink the old file, to get the new one with the
|
|
* right permissions (including umask, which is nasty
|
|
* to emulate by hand - much easier to let the system
|
|
* just do the right thing)
|
|
*/
|
|
unlink(path);
|
|
if (S_ISDIR(st.st_mode)) {
|
|
/* If it is a gitlink, leave it alone! */
|
|
if (S_ISDIRLNK(ntohl(ce->ce_mode)))
|
|
return 0;
|
|
if (!state->force)
|
|
return error("%s is a directory", path);
|
|
remove_subtree(path);
|
|
}
|
|
} else if (state->not_new)
|
|
return 0;
|
|
create_directories(path, state);
|
|
return write_entry(ce, path, state, 0);
|
|
}
|