#include "cache.h"
#include "blob.h"
#include "dir.h"
+#include "streaming.h"
static void create_directories(const char *path, int path_len,
const struct checkout *state)
return open(path, O_WRONLY | O_CREAT | O_EXCL, mode);
}
-static void *read_blob_entry(struct cache_entry *ce, unsigned long *size)
+static void *read_blob_entry(const struct cache_entry *ce, unsigned long *size)
{
enum object_type type;
void *new = read_sha1_file(ce->sha1, &type, size);
return NULL;
}
-static int write_entry(struct cache_entry *ce, char *path, const struct checkout *state, int to_tempfile)
+static int open_output_fd(char *path, const struct cache_entry *ce, int to_tempfile)
+{
+ int symlink = (ce->ce_mode & S_IFMT) != S_IFREG;
+ if (to_tempfile) {
+ strcpy(path, symlink
+ ? ".merge_link_XXXXXX" : ".merge_file_XXXXXX");
+ return mkstemp(path);
+ } else {
+ return create_file(path, !symlink ? ce->ce_mode : 0666);
+ }
+}
+
+static int fstat_output(int fd, const struct checkout *state, struct stat *st)
+{
+ /* use fstat() only when path == ce->name */
+ if (fstat_is_reliable() &&
+ state->refresh_cache && !state->base_dir_len) {
+ fstat(fd, st);
+ return 1;
+ }
+ return 0;
+}
+
+static int streaming_write_entry(const struct cache_entry *ce, char *path,
+ struct stream_filter *filter,
+ const struct checkout *state, int to_tempfile,
+ int *fstat_done, struct stat *statbuf)
+{
+ int result = 0;
+ int fd;
+
+ fd = open_output_fd(path, ce, to_tempfile);
+ if (fd < 0)
+ return -1;
+
+ result |= stream_blob_to_fd(fd, ce->sha1, filter, 1);
+ *fstat_done = fstat_output(fd, state, statbuf);
+ result |= close(fd);
+
+ if (result)
+ unlink(path);
+ return result;
+}
+
+static int write_entry(struct cache_entry *ce,
+ char *path, const struct checkout *state, int to_tempfile)
{
unsigned int ce_mode_s_ifmt = ce->ce_mode & S_IFMT;
int fd, ret, fstat_done = 0;
size_t wrote, newsize = 0;
struct stat st;
+ if (ce_mode_s_ifmt == S_IFREG) {
+ struct stream_filter *filter = get_stream_filter(ce->name, ce->sha1);
+ if (filter &&
+ !streaming_write_entry(ce, path, filter,
+ state, to_tempfile,
+ &fstat_done, &st))
+ goto finish;
+ }
+
switch (ce_mode_s_ifmt) {
case S_IFREG:
case S_IFLNK:
size = newsize;
}
- if (to_tempfile) {
- if (ce_mode_s_ifmt == S_IFREG)
- strcpy(path, ".merge_file_XXXXXX");
- else
- strcpy(path, ".merge_link_XXXXXX");
- fd = mkstemp(path);
- } else if (ce_mode_s_ifmt == S_IFREG) {
- fd = create_file(path, ce->ce_mode);
- } else {
- fd = create_file(path, 0666);
- }
+ fd = open_output_fd(path, ce, to_tempfile);
if (fd < 0) {
free(new);
return error("unable to create file %s (%s)",
}
wrote = write_in_full(fd, new, size);
- /* use fstat() only when path == ce->name */
- if (fstat_is_reliable() &&
- state->refresh_cache && !to_tempfile && !state->base_dir_len) {
- fstat(fd, &st);
- fstat_done = 1;
- }
+ if (!to_tempfile)
+ fstat_done = fstat_output(fd, state, &st);
close(fd);
free(new);
if (wrote != size)
break;
case S_IFGITLINK:
if (to_tempfile)
- return error("cannot create temporary subproject %s", path);
+ return error("cannot create temporary submodule %s", path);
if (mkdir(path, 0777) < 0)
- return error("cannot create subproject directory %s", path);
+ return error("cannot create submodule directory %s", path);
break;
default:
return error("unknown file mode for %s in index", path);
}
+finish:
if (state->refresh_cache) {
if (!fstat_done)
lstat(ce->name, &st);
return lstat(path, st);
}
-int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath)
+/*
+ * Write the contents from ce out to the working tree.
+ *
+ * When topath[] is not NULL, instead of writing to the working tree
+ * file named by ce, a temporary file is created by this function and
+ * its name is returned in topath[], which must be able to hold at
+ * least TEMPORARY_FILENAME_LENGTH bytes long.
+ */
+int checkout_entry(struct cache_entry *ce,
+ const struct checkout *state, char *topath)
{
- static char path[PATH_MAX + 1];
+ static struct strbuf path_buf = STRBUF_INIT;
+ char *path;
struct stat st;
- int len = state->base_dir_len;
+ int len;
if (topath)
return write_entry(ce, topath, state, 1);
- memcpy(path, state->base_dir, len);
- strcpy(path + len, ce->name);
- len += ce_namelen(ce);
+ strbuf_reset(&path_buf);
+ strbuf_add(&path_buf, state->base_dir, state->base_dir_len);
+ strbuf_add(&path_buf, ce->name, ce_namelen(ce));
+ path = path_buf.buf;
+ len = path_buf.len;
if (!check_path(path, len, &st, state->base_dir_len)) {
unsigned changed = ce_match_stat(ce, &st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE);