/* And generate the fake traditional header */
stream->total_out = 1 + snprintf(buffer, bufsiz, "%s %lu",
- type_names[type], size);
+ typename(type), size);
return 0;
}
* too permissive for what we want to check. So do an anal
* object header parse by hand.
*/
-static int parse_sha1_header(char *hdr, char *type, unsigned long *sizep)
+static int parse_sha1_header(const char *hdr, unsigned long *sizep)
{
+ char type[10];
int i;
unsigned long size;
/*
* The type can be at most ten bytes (including the
* terminating '\0' that we add), and is followed by
- * a space.
+ * a space.
*/
- i = 10;
+ i = 0;
for (;;) {
char c = *hdr++;
if (c == ' ')
break;
- if (!--i)
+ type[i++] = c;
+ if (i >= sizeof(type))
return -1;
- *type++ = c;
}
- *type = 0;
+ type[i] = 0;
/*
* The length must follow immediately, and be in canonical
/*
* The length must be followed by a zero byte
*/
- return *hdr ? -1 : 0;
+ return *hdr ? -1 : type_from_string(type);
}
-void * unpack_sha1_file(void *map, unsigned long mapsize, char *type, unsigned long *size)
+void * unpack_sha1_file(void *map, unsigned long mapsize, enum object_type *type, unsigned long *size)
{
int ret;
z_stream stream;
char hdr[8192];
ret = unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr));
- if (ret < Z_OK || parse_sha1_header(hdr, type, size) < 0)
+ if (ret < Z_OK || (*type = parse_sha1_header(hdr, size)) < 0)
return NULL;
return unpack_sha1_rest(&stream, hdr, *size);
static unsigned long get_delta_base(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long offset,
- enum object_type kind,
- unsigned long delta_obj_offset,
- unsigned long *base_obj_offset)
+ unsigned long *curpos,
+ enum object_type type,
+ unsigned long delta_obj_offset)
{
- unsigned char *base_info = use_pack(p, w_curs, offset, NULL);
+ unsigned char *base_info = use_pack(p, w_curs, *curpos, NULL);
unsigned long base_offset;
/* use_pack() assured us we have [base_info, base_info + 20)
* that is assured. An OFS_DELTA longer than the hash size
* is stupid, as then a REF_DELTA would be smaller to store.
*/
- if (kind == OBJ_OFS_DELTA) {
+ if (type == OBJ_OFS_DELTA) {
unsigned used = 0;
unsigned char c = base_info[used++];
base_offset = c & 127;
base_offset = delta_obj_offset - base_offset;
if (base_offset >= delta_obj_offset)
die("delta base offset out of bound");
- offset += used;
- } else if (kind == OBJ_REF_DELTA) {
+ *curpos += used;
+ } else if (type == OBJ_REF_DELTA) {
/* The base entry _must_ be in the same pack */
base_offset = find_pack_entry_one(base_info, p);
if (!base_offset)
die("failed to find delta-pack base object %s",
sha1_to_hex(base_info));
- offset += 20;
+ *curpos += 20;
} else
die("I am totally screwed");
- *base_obj_offset = base_offset;
- return offset;
+ return base_offset;
}
/* forward declaration for a mutually recursive function */
static int packed_object_info(struct packed_git *p, unsigned long offset,
- char *type, unsigned long *sizep);
+ unsigned long *sizep);
static int packed_delta_info(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long offset,
- enum object_type kind,
+ unsigned long curpos,
+ enum object_type type,
unsigned long obj_offset,
- char *type,
unsigned long *sizep)
{
unsigned long base_offset;
- offset = get_delta_base(p, w_curs, offset, kind,
- obj_offset, &base_offset);
+ base_offset = get_delta_base(p, w_curs, &curpos, type, obj_offset);
+ type = packed_object_info(p, base_offset, NULL);
/* We choose to only get the type of the base object and
* ignore potentially corrupt pack file that expects the delta
* based on a base with a wrong size. This saves tons of
* inflate() calls.
*/
- if (packed_object_info(p, base_offset, type, NULL))
- die("cannot get info for delta-pack base");
-
if (sizep) {
const unsigned char *data;
unsigned char delta_head[20], *in;
- unsigned long result_size;
z_stream stream;
int st;
inflateInit(&stream);
do {
- in = use_pack(p, w_curs, offset, &stream.avail_in);
+ in = use_pack(p, w_curs, curpos, &stream.avail_in);
stream.next_in = in;
st = inflate(&stream, Z_FINISH);
- offset += stream.next_in - in;
+ curpos += stream.next_in - in;
} while ((st == Z_OK || st == Z_BUF_ERROR)
&& stream.total_out < sizeof(delta_head));
inflateEnd(&stream);
get_delta_hdr_size(&data, delta_head+sizeof(delta_head));
/* Read the result size */
- result_size = get_delta_hdr_size(&data, delta_head+sizeof(delta_head));
- *sizep = result_size;
+ *sizep = get_delta_hdr_size(&data, delta_head+sizeof(delta_head));
}
- return 0;
+
+ return type;
}
-static unsigned long unpack_object_header(struct packed_git *p,
- struct pack_window **w_curs,
- unsigned long offset,
- enum object_type *type,
- unsigned long *sizep)
+static int unpack_object_header(struct packed_git *p,
+ struct pack_window **w_curs,
+ unsigned long *curpos,
+ unsigned long *sizep)
{
unsigned char *base;
unsigned int left;
unsigned long used;
+ enum object_type type;
/* use_pack() assures us we have [base, base + 20) available
* as a range that we can look at at. (Its actually the hash
* the maximum deflated object size is 2^137, which is just
* insane, so we know won't exceed what we have been given.
*/
- base = use_pack(p, w_curs, offset, &left);
- used = unpack_object_header_gently(base, left, type, sizep);
+ base = use_pack(p, w_curs, *curpos, &left);
+ used = unpack_object_header_gently(base, left, &type, sizep);
if (!used)
die("object offset outside of pack file");
+ *curpos += used;
- return offset + used;
+ return type;
}
-void packed_object_info_detail(struct packed_git *p,
- unsigned long offset,
- char *type,
- unsigned long *size,
- unsigned long *store_size,
- unsigned int *delta_chain_length,
- unsigned char *base_sha1)
+const char *packed_object_info_detail(struct packed_git *p,
+ unsigned long obj_offset,
+ unsigned long *size,
+ unsigned long *store_size,
+ unsigned int *delta_chain_length,
+ unsigned char *base_sha1)
{
struct pack_window *w_curs = NULL;
- unsigned long obj_offset, val;
+ unsigned long curpos, dummy;
unsigned char *next_sha1;
- enum object_type kind;
+ enum object_type type;
*delta_chain_length = 0;
- obj_offset = offset;
- offset = unpack_object_header(p, &w_curs, offset, &kind, size);
+ curpos = obj_offset;
+ type = unpack_object_header(p, &w_curs, &curpos, size);
for (;;) {
- switch (kind) {
+ switch (type) {
default:
die("pack %s contains unknown object type %d",
- p->pack_name, kind);
+ p->pack_name, type);
case OBJ_COMMIT:
case OBJ_TREE:
case OBJ_BLOB:
case OBJ_TAG:
- strcpy(type, type_names[kind]);
*store_size = 0; /* notyet */
unuse_pack(&w_curs);
- return;
+ return typename(type);
case OBJ_OFS_DELTA:
- get_delta_base(p, &w_curs, offset, kind,
- obj_offset, &offset);
+ obj_offset = get_delta_base(p, &w_curs, &curpos, type, obj_offset);
if (*delta_chain_length == 0) {
- /* TODO: find base_sha1 as pointed by offset */
+ /* TODO: find base_sha1 as pointed by curpos */
}
break;
case OBJ_REF_DELTA:
- next_sha1 = use_pack(p, &w_curs, offset, NULL);
+ next_sha1 = use_pack(p, &w_curs, curpos, NULL);
if (*delta_chain_length == 0)
hashcpy(base_sha1, next_sha1);
- offset = find_pack_entry_one(next_sha1, p);
+ obj_offset = find_pack_entry_one(next_sha1, p);
break;
}
- obj_offset = offset;
- offset = unpack_object_header(p, &w_curs, offset, &kind, &val);
(*delta_chain_length)++;
+ curpos = obj_offset;
+ type = unpack_object_header(p, &w_curs, &curpos, &dummy);
}
}
-static int packed_object_info(struct packed_git *p, unsigned long offset,
- char *type, unsigned long *sizep)
+static int packed_object_info(struct packed_git *p, unsigned long obj_offset,
+ unsigned long *sizep)
{
struct pack_window *w_curs = NULL;
- unsigned long size, obj_offset = offset;
- enum object_type kind;
- int r;
+ unsigned long size, curpos = obj_offset;
+ enum object_type type;
- offset = unpack_object_header(p, &w_curs, offset, &kind, &size);
+ type = unpack_object_header(p, &w_curs, &curpos, &size);
- switch (kind) {
+ switch (type) {
case OBJ_OFS_DELTA:
case OBJ_REF_DELTA:
- r = packed_delta_info(p, &w_curs, offset, kind,
- obj_offset, type, sizep);
- unuse_pack(&w_curs);
- return r;
+ type = packed_delta_info(p, &w_curs, curpos,
+ type, obj_offset, sizep);
+ break;
case OBJ_COMMIT:
case OBJ_TREE:
case OBJ_BLOB:
case OBJ_TAG:
- strcpy(type, type_names[kind]);
- unuse_pack(&w_curs);
+ if (sizep)
+ *sizep = size;
break;
default:
die("pack %s contains unknown object type %d",
- p->pack_name, kind);
+ p->pack_name, type);
}
- if (sizep)
- *sizep = size;
- return 0;
+ unuse_pack(&w_curs);
+ return type;
}
static void *unpack_compressed_entry(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long offset,
+ unsigned long curpos,
unsigned long size)
{
int st;
inflateInit(&stream);
do {
- in = use_pack(p, w_curs, offset, &stream.avail_in);
+ in = use_pack(p, w_curs, curpos, &stream.avail_in);
stream.next_in = in;
st = inflate(&stream, Z_FINISH);
- offset += stream.next_in - in;
+ curpos += stream.next_in - in;
} while (st == Z_OK || st == Z_BUF_ERROR);
inflateEnd(&stream);
if ((st != Z_STREAM_END) || stream.total_out != size) {
static void *unpack_delta_entry(struct packed_git *p,
struct pack_window **w_curs,
- unsigned long offset,
+ unsigned long curpos,
unsigned long delta_size,
- enum object_type kind,
unsigned long obj_offset,
- char *type,
+ enum object_type *type,
unsigned long *sizep)
{
void *delta_data, *result, *base;
- unsigned long result_size, base_size, base_offset;
+ unsigned long base_size, base_offset;
- offset = get_delta_base(p, w_curs, offset, kind,
- obj_offset, &base_offset);
+ base_offset = get_delta_base(p, w_curs, &curpos, *type, obj_offset);
base = unpack_entry(p, base_offset, type, &base_size);
if (!base)
die("failed to read delta base object at %lu from %s",
base_offset, p->pack_name);
- delta_data = unpack_compressed_entry(p, w_curs, offset, delta_size);
+ delta_data = unpack_compressed_entry(p, w_curs, curpos, delta_size);
result = patch_delta(base, base_size,
delta_data, delta_size,
- &result_size);
+ sizep);
if (!result)
die("failed to apply delta");
free(delta_data);
free(base);
- *sizep = result_size;
return result;
}
-void *unpack_entry(struct packed_git *p, unsigned long offset,
- char *type, unsigned long *sizep)
+void *unpack_entry(struct packed_git *p, unsigned long obj_offset,
+ enum object_type *type, unsigned long *sizep)
{
struct pack_window *w_curs = NULL;
- unsigned long size, obj_offset = offset;
- enum object_type kind;
- void *retval;
+ unsigned long curpos = obj_offset;
+ void *data;
- offset = unpack_object_header(p, &w_curs, offset, &kind, &size);
- switch (kind) {
+ *type = unpack_object_header(p, &w_curs, &curpos, sizep);
+ switch (*type) {
case OBJ_OFS_DELTA:
case OBJ_REF_DELTA:
- retval = unpack_delta_entry(p, &w_curs, offset, size,
- kind, obj_offset, type, sizep);
+ data = unpack_delta_entry(p, &w_curs, curpos, *sizep,
+ obj_offset, type, sizep);
break;
case OBJ_COMMIT:
case OBJ_TREE:
case OBJ_BLOB:
case OBJ_TAG:
- strcpy(type, type_names[kind]);
- *sizep = size;
- retval = unpack_compressed_entry(p, &w_curs, offset, size);
+ data = unpack_compressed_entry(p, &w_curs, curpos, *sizep);
break;
default:
- die("unknown object type %i in %s", kind, p->pack_name);
+ die("unknown object type %i in %s", *type, p->pack_name);
}
unuse_pack(&w_curs);
- return retval;
+ return data;
}
int num_packed_objects(const struct packed_git *p)
return p;
}
return NULL;
-
+
}
-static int sha1_loose_object_info(const unsigned char *sha1, char *type, unsigned long *sizep)
+static int sha1_loose_object_info(const unsigned char *sha1, unsigned long *sizep)
{
int status;
unsigned long mapsize, size;
void *map;
z_stream stream;
- char hdr[128];
+ char hdr[32];
map = map_sha1_file(sha1, &mapsize);
if (!map)
if (unpack_sha1_header(&stream, map, mapsize, hdr, sizeof(hdr)) < 0)
status = error("unable to unpack %s header",
sha1_to_hex(sha1));
- if (parse_sha1_header(hdr, type, &size) < 0)
+ else if ((status = parse_sha1_header(hdr, &size)) < 0)
status = error("unable to parse %s header", sha1_to_hex(sha1));
- else {
- status = 0;
- if (sizep)
- *sizep = size;
- }
+ else if (sizep)
+ *sizep = size;
inflateEnd(&stream);
munmap(map, mapsize);
return status;
}
-int sha1_object_info(const unsigned char *sha1, char *type, unsigned long *sizep)
+int sha1_object_info(const unsigned char *sha1, unsigned long *sizep)
{
struct pack_entry e;
if (!find_pack_entry(sha1, &e, NULL)) {
reprepare_packed_git();
if (!find_pack_entry(sha1, &e, NULL))
- return sha1_loose_object_info(sha1, type, sizep);
+ return sha1_loose_object_info(sha1, sizep);
}
- return packed_object_info(e.p, e.offset, type, sizep);
+ return packed_object_info(e.p, e.offset, sizep);
}
-static void *read_packed_sha1(const unsigned char *sha1, char *type, unsigned long *size)
+static void *read_packed_sha1(const unsigned char *sha1,
+ enum object_type *type, unsigned long *size)
{
struct pack_entry e;
*/
static struct cached_object {
unsigned char sha1[20];
- const char *type;
+ enum object_type type;
void *buf;
unsigned long size;
} *cached_objects;
return NULL;
}
-int pretend_sha1_file(void *buf, unsigned long len, const char *type, unsigned char *sha1)
+int pretend_sha1_file(void *buf, unsigned long len, enum object_type type,
+ unsigned char *sha1)
{
struct cached_object *co;
- hash_sha1_file(buf, len, type, sha1);
+ hash_sha1_file(buf, len, typename(type), sha1);
if (has_sha1_file(sha1) || find_cached_object(sha1))
return 0;
if (cached_object_alloc <= cached_object_nr) {
}
co = &cached_objects[cached_object_nr++];
co->size = len;
- co->type = strdup(type);
+ co->type = type;
co->buf = xmalloc(len);
memcpy(co->buf, buf, len);
hashcpy(co->sha1, sha1);
return 0;
}
-void *read_sha1_file(const unsigned char *sha1, char *type, unsigned long *size)
+void *read_sha1_file(const unsigned char *sha1, enum object_type *type,
+ unsigned long *size)
{
unsigned long mapsize;
void *map, *buf;
buf = xmalloc(co->size + 1);
memcpy(buf, co->buf, co->size);
((char*)buf)[co->size] = 0;
- strcpy(type, co->type);
+ *type = co->type;
*size = co->size;
return buf;
}
}
void *read_object_with_reference(const unsigned char *sha1,
- const char *required_type,
+ const char *required_type_name,
unsigned long *size,
unsigned char *actual_sha1_return)
{
- char type[20];
+ enum object_type type, required_type;
void *buffer;
unsigned long isize;
unsigned char actual_sha1[20];
+ required_type = type_from_string(required_type_name);
hashcpy(actual_sha1, sha1);
while (1) {
int ref_length = -1;
const char *ref_type = NULL;
- buffer = read_sha1_file(actual_sha1, type, &isize);
+ buffer = read_sha1_file(actual_sha1, &type, &isize);
if (!buffer)
return NULL;
- if (!strcmp(type, required_type)) {
+ if (type == required_type) {
*size = isize;
if (actual_sha1_return)
hashcpy(actual_sha1_return, actual_sha1);
return buffer;
}
/* Handle references */
- else if (!strcmp(type, commit_type))
+ else if (type == OBJ_COMMIT)
ref_type = "tree ";
- else if (!strcmp(type, tag_type))
+ else if (type == OBJ_TAG)
ref_type = "object ";
else {
free(buffer);
static void write_sha1_file_prepare(void *buf, unsigned long len,
const char *type, unsigned char *sha1,
- unsigned char *hdr, int *hdrlen)
+ char *hdr, int *hdrlen)
{
SHA_CTX c;
/* Generate the header */
- *hdrlen = sprintf((char *)hdr, "%s %lu", type, len)+1;
+ *hdrlen = sprintf(hdr, "%s %lu", type, len)+1;
/* Sha1.. */
SHA1_Init(&c);
static void setup_object_header(z_stream *stream, const char *type, unsigned long len)
{
- int obj_type, hdr;
+ int obj_type, hdrlen;
if (use_legacy_headers) {
while (deflate(stream, 0) == Z_OK)
/* nothing */;
return;
}
- if (!strcmp(type, blob_type))
- obj_type = OBJ_BLOB;
- else if (!strcmp(type, tree_type))
- obj_type = OBJ_TREE;
- else if (!strcmp(type, commit_type))
- obj_type = OBJ_COMMIT;
- else if (!strcmp(type, tag_type))
- obj_type = OBJ_TAG;
- else
- die("trying to generate bogus object of type '%s'", type);
- hdr = write_binary_header(stream->next_out, obj_type, len);
- stream->total_out = hdr;
- stream->next_out += hdr;
- stream->avail_out -= hdr;
+ 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(void *buf, unsigned long len, const char *type,
unsigned char *sha1)
{
- unsigned char hdr[50];
+ char hdr[32];
int hdrlen;
write_sha1_file_prepare(buf, len, type, sha1, hdr, &hdrlen);
return 0;
unsigned char sha1[20];
char *filename;
static char tmpfile[PATH_MAX];
- unsigned char hdr[50];
+ char hdr[32];
int fd, hdrlen;
/* Normally if we have it in the pack then we do not bother writing
stream.avail_out = size;
/* First header.. */
- stream.next_in = hdr;
+ stream.next_in = (unsigned char *)hdr;
stream.avail_in = hdrlen;
setup_object_header(&stream, type, len);
z_stream stream;
unsigned char *unpacked;
unsigned long len;
- char type[20];
- char hdr[50];
+ enum object_type type;
+ char hdr[32];
int hdrlen;
void *buf;
/* need to unpack and recompress it by itself */
- unpacked = read_packed_sha1(sha1, type, &len);
+ unpacked = read_packed_sha1(sha1, &type, &len);
if (!unpacked)
error("cannot read sha1_file for %s", sha1_to_hex(sha1));
- hdrlen = sprintf(hdr, "%s %lu", type, len) + 1;
+ hdrlen = sprintf(hdr, "%s %lu", typename(type), len) + 1;
/* Set it up */
memset(&stream, 0, sizeof(stream));
{
unsigned long size = st->st_size;
void *buf;
- int ret;
+ int ret, re_allocated = 0;
buf = "";
if (size)
if (!type)
type = blob_type;
- /* FIXME: CRLF -> LF conversion here for blobs! We'll need the path! */
+
+ /*
+ * Convert blobs to git internal format
+ */
+ if (!strcmp(type, blob_type)) {
+ unsigned long nsize = size;
+ char *nbuf = buf;
+ if (convert_to_git(NULL, &nbuf, &nsize)) {
+ if (size)
+ munmap(buf, size);
+ size = nsize;
+ buf = nbuf;
+ re_allocated = 1;
+ }
+ }
+
if (write_object)
ret = write_sha1_file(buf, size, type, sha1);
else
ret = hash_sha1_file(buf, size, type, sha1);
+ if (re_allocated) {
+ free(buf);
+ return ret;
+ }
if (size)
munmap(buf, size);
return ret;