compression, and 1..9 are various speed/size tradeoffs, 9 being
slowest.
- core.legacyheaders::
- A boolean which
- changes the format of loose objects so that they are more
- efficient to pack and to send out of the repository over git
- native protocol, since v1.4.2. However, loose objects
- written in the new format cannot be read by git older than
- that version; people fetching from your repository using
- older versions of git over dumb transports (e.g. http)
- will also be affected.
- +
- To let git use the new loose object format, you have to
- set core.legacyheaders to false.
-
core.packedGitWindowSize::
Number of bytes of a pack file to map into memory in a
single mapping operation. Larger window sizes may allow
`.patch`. Use this variable to change that suffix (make sure to
include the dot if you want it).
+gc.aggressiveWindow::
+ The window size parameter used in the delta compression
+ algorithm used by 'git gc --aggressive'. This defaults
+ to 10.
+
gc.packrefs::
`git gc` does not run `git pack-refs` in a bare repository by
default so that older dumb-transport clients can still fetch
extern int delete_ref(const char *, const unsigned char *sha1);
/* Environment bits from configuration mechanism */
- extern int use_legacy_headers;
extern int trust_executable_bit;
extern int has_symlinks;
extern int assume_unchanged;
extern int has_sha1_pack(const unsigned char *sha1, const char **ignore);
extern int has_sha1_file(const unsigned char *sha1);
extern void *map_sha1_file(const unsigned char *sha1, unsigned long *);
- extern int legacy_loose_object(unsigned char *);
extern int has_pack_file(const unsigned char *sha1);
extern int has_pack_index(const unsigned char *sha1);
};
extern int checkout_entry(struct cache_entry *ce, const struct checkout *state, char *topath);
+extern int has_symlink_leading_path(const char *name, char *last_symlink);
extern struct alternate_object_database {
struct alternate_object_database *next;
/* convert.c */
extern char *convert_to_git(const char *path, const char *src, unsigned long *sizep);
extern char *convert_to_working_tree(const char *path, const char *src, unsigned long *sizep);
+extern void *convert_sha1_file(const char *path, const unsigned char *sha1, unsigned int mode, enum object_type *type, unsigned long *size);
/* match-trees.c */
void shift_tree(const unsigned char *, const unsigned char *, unsigned char *, int);
return 0;
}
- if (!strcmp(var, "core.legacyheaders")) {
- use_legacy_headers = git_config_bool(var, value);
- return 0;
- }
-
if (!strcmp(var, "core.compression")) {
int level = git_config_int(var, value);
if (level == -1)
static int store_aux(const char* key, const char* value)
{
+ const char *ep;
+ size_t section_len;
+
switch (store.state) {
case KEY_SEEN:
if (matches(key, value)) {
}
break;
case SECTION_SEEN:
- if (strncmp(key, store.key, store.baselen+1)) {
+ /*
+ * What we are looking for is in store.key (both
+ * section and var), and its section part is baselen
+ * long. We found key (again, both section and var).
+ * We would want to know if this key is in the same
+ * section as what we are looking for. We already
+ * know we are in the same section as what should
+ * hold store.key.
+ */
+ ep = strrchr(key, '.');
+ section_len = ep - key;
+
+ if ((section_len != store.baselen) ||
+ memcmp(key, store.key, section_len+1)) {
store.state = SECTION_END_SEEN;
break;
- } else
- /* do not increment matches: this is no match */
- store.offset[store.seen] = ftell(config_file);
+ }
+
+ /*
+ * Do not increment matches: this is no match, but we
+ * just made sure we are in the desired section.
+ */
+ store.offset[store.seen] = ftell(config_file);
/* fallthru */
case SECTION_END_SEEN:
case START:
return map;
}
- int legacy_loose_object(unsigned char *map)
+ static int legacy_loose_object(unsigned char *map)
{
unsigned int word;
return inflate(stream, 0);
}
+
+ /*
+ * There used to be a second loose object header format which
+ * was meant to mimic the in-pack format, allowing for direct
+ * copy of the object data. This format turned up not to be
+ * really worth it and we don't write it any longer. But we
+ * can still read it.
+ */
used = unpack_object_header_gently(map, mapsize, &type, &size);
if (!used || !valid_loose_object_type[type])
return -1;
return 0;
}
- static int write_binary_header(unsigned char *hdr, enum object_type type, unsigned long len)
- {
- int hdr_len;
- unsigned char c;
-
- c = (type << 4) | (len & 15);
- len >>= 4;
- hdr_len = 1;
- while (len) {
- *hdr++ = c | 0x80;
- hdr_len++;
- c = (len & 0x7f);
- len >>= 7;
- }
- *hdr = c;
- return hdr_len;
- }
-
- static void setup_object_header(z_stream *stream, const char *type, unsigned long len)
- {
- int obj_type, hdrlen;
-
- if (use_legacy_headers) {
- while (deflate(stream, 0) == Z_OK)
- /* nothing */;
- return;
- }
- obj_type = type_from_string(type);
- hdrlen = write_binary_header(stream->next_out, obj_type, len);
- stream->total_out = hdrlen;
- stream->next_out += hdrlen;
- stream->avail_out -= hdrlen;
- }
-
int hash_sha1_file(const void *buf, unsigned long len, const char *type,
unsigned char *sha1)
{
/* First header.. */
stream.next_in = (unsigned char *)hdr;
stream.avail_in = hdrlen;
- setup_object_header(&stream, type, len);
+ while (deflate(&stream, 0) == Z_OK)
+ /* nothing */;
/* Then the data itself.. */
stream.next_in = buf;
{
char* buf = *return_buf;
unsigned long size = *return_size;
- int iret;
+ ssize_t iret;
unsigned long off = 0;
do {