+#include "cache.h"
#include "tree.h"
#include "blob.h"
-#include "cache.h"
+#include "commit.h"
+#include "tag.h"
+#include "tree-walk.h"
#include <stdlib.h>
const char *tree_type = "tree";
-static int read_one_entry(unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode, int stage)
+static int read_one_entry(const unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode, int stage)
{
- int len = strlen(pathname);
- unsigned int size = cache_entry_size(baselen + len);
- struct cache_entry *ce = xmalloc(size);
+ int len;
+ unsigned int size;
+ struct cache_entry *ce;
- memset(ce, 0, size);
+ if (S_ISDIR(mode))
+ return READ_TREE_RECURSIVE;
+
+ len = strlen(pathname);
+ size = cache_entry_size(baselen + len);
+ ce = xcalloc(1, size);
ce->ce_mode = create_ce_mode(mode);
ce->ce_flags = create_ce_flags(baselen + len, stage);
return 0;
}
-static int read_tree_recursive(void *buffer, unsigned long size,
- const char *base, int baselen,
- int stage, const char **match)
+int read_tree_recursive(struct tree *tree,
+ const char *base, int baselen,
+ int stage, const char **match,
+ read_tree_fn_t fn)
{
- while (size) {
- int len = strlen(buffer)+1;
- unsigned char *sha1 = buffer + len;
- char *path = strchr(buffer, ' ')+1;
- unsigned int mode;
+ struct tree_desc desc;
+ struct name_entry entry;
- if (size < len + 20 || sscanf(buffer, "%o", &mode) != 1)
- return -1;
+ if (parse_tree(tree))
+ return -1;
- buffer = sha1 + 20;
- size -= len + 20;
+ desc.buf = tree->buffer;
+ desc.size = tree->size;
- if (!match_tree_entry(base, baselen, path, mode, match))
+ while (tree_entry(&desc, &entry)) {
+ if (!match_tree_entry(base, baselen, entry.path, entry.mode, match))
continue;
- if (S_ISDIR(mode)) {
+ switch (fn(entry.sha1, base, baselen, entry.path, entry.mode, stage)) {
+ case 0:
+ continue;
+ case READ_TREE_RECURSIVE:
+ break;;
+ default:
+ return -1;
+ }
+ if (S_ISDIR(entry.mode)) {
int retval;
- int pathlen = strlen(path);
char *newbase;
- void *eltbuf;
- char elttype[20];
- unsigned long eltsize;
- eltbuf = read_sha1_file(sha1, elttype, &eltsize);
- if (!eltbuf || strcmp(elttype, "tree")) {
- if (eltbuf) free(eltbuf);
- return -1;
- }
- newbase = xmalloc(baselen + 1 + pathlen);
+ newbase = xmalloc(baselen + 1 + entry.pathlen);
memcpy(newbase, base, baselen);
- memcpy(newbase + baselen, path, pathlen);
- newbase[baselen + pathlen] = '/';
- retval = read_tree_recursive(eltbuf, eltsize,
+ memcpy(newbase + baselen, entry.path, entry.pathlen);
+ newbase[baselen + entry.pathlen] = '/';
+ retval = read_tree_recursive(lookup_tree(entry.sha1),
newbase,
- baselen + pathlen + 1,
- stage, match);
- free(eltbuf);
+ baselen + entry.pathlen + 1,
+ stage, match, fn);
free(newbase);
if (retval)
return -1;
continue;
}
- if (read_one_entry(sha1, base, baselen, path, mode, stage) < 0)
- return -1;
}
return 0;
}
-int read_tree(void *buffer, unsigned long size, int stage, const char **match)
+int read_tree(struct tree *tree, int stage, const char **match)
{
- return read_tree_recursive(buffer, size, "", 0, stage, match);
+ return read_tree_recursive(tree, "", 0, stage, match, read_one_entry);
}
struct tree *lookup_tree(const unsigned char *sha1)
{
struct object *obj = lookup_object(sha1);
if (!obj) {
- struct tree *ret = xmalloc(sizeof(struct tree));
- memset(ret, 0, sizeof(struct tree));
+ struct tree *ret = alloc_tree_node();
created_object(sha1, &ret->object);
- ret->object.type = tree_type;
+ ret->object.type = TYPE_TREE;
return ret;
}
if (!obj->type)
- obj->type = tree_type;
- if (obj->type != tree_type) {
- error("Object %s is a %s, not a tree",
- sha1_to_hex(sha1), obj->type);
+ obj->type = TYPE_TREE;
+ if (obj->type != TYPE_TREE) {
+ error("Object %s is a %s, not a tree",
+ sha1_to_hex(sha1), typename(obj->type));
return NULL;
}
return (struct tree *) obj;
}
-int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size)
+static int track_tree_refs(struct tree *item)
{
- void *bufptr = buffer;
- struct tree_entry_list **list_p;
+ int n_refs = 0, i;
+ struct object_refs *refs;
+ struct tree_desc desc;
+ struct name_entry entry;
+
+ /* Count how many entries there are.. */
+ desc.buf = item->buffer;
+ desc.size = item->size;
+ while (desc.size) {
+ n_refs++;
+ update_tree_entry(&desc);
+ }
+
+ /* Allocate object refs and walk it again.. */
+ i = 0;
+ refs = alloc_object_refs(n_refs);
+ desc.buf = item->buffer;
+ desc.size = item->size;
+ while (tree_entry(&desc, &entry)) {
+ struct object *obj;
+ if (S_ISDIR(entry.mode))
+ obj = &lookup_tree(entry.sha1)->object;
+ else
+ obj = &lookup_blob(entry.sha1)->object;
+ refs->ref[i++] = obj;
+ }
+ set_object_refs(&item->object, refs);
+ return 0;
+}
+
+int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size)
+{
if (item->object.parsed)
return 0;
item->object.parsed = 1;
- list_p = &item->entries;
- while (size) {
- struct object *obj;
- struct tree_entry_list *entry;
- int len = 1+strlen(bufptr);
- unsigned char *file_sha1 = bufptr + len;
- char *path = strchr(bufptr, ' ');
- unsigned int mode;
- if (size < len + 20 || !path ||
- sscanf(bufptr, "%o", &mode) != 1)
- return -1;
+ item->buffer = buffer;
+ item->size = size;
- entry = xmalloc(sizeof(struct tree_entry_list));
- entry->name = strdup(path + 1);
- entry->directory = S_ISDIR(mode) != 0;
- entry->executable = (mode & S_IXUSR) != 0;
- entry->symlink = S_ISLNK(mode) != 0;
- entry->zeropad = *(char *)bufptr == '0';
- entry->mode = mode;
- entry->next = NULL;
-
- bufptr += len + 20;
- size -= len + 20;
-
- if (entry->directory) {
- entry->item.tree = lookup_tree(file_sha1);
- obj = &entry->item.tree->object;
- } else {
- entry->item.blob = lookup_blob(file_sha1);
- obj = &entry->item.blob->object;
- }
- if (obj)
- add_ref(&item->object, obj);
- entry->parent = NULL; /* needs to be filled by the user */
- *list_p = entry;
- list_p = &entry->next;
- }
+ if (track_object_refs)
+ track_tree_refs(item);
return 0;
}
char type[20];
void *buffer;
unsigned long size;
- int ret;
if (item->object.parsed)
return 0;
return error("Object %s not a tree",
sha1_to_hex(item->object.sha1));
}
- ret = parse_tree_buffer(item, buffer, size);
- free(buffer);
- return ret;
+ return parse_tree_buffer(item, buffer, size);
+}
+
+struct tree *parse_tree_indirect(const unsigned char *sha1)
+{
+ struct object *obj = parse_object(sha1);
+ do {
+ if (!obj)
+ return NULL;
+ if (obj->type == TYPE_TREE)
+ return (struct tree *) obj;
+ else if (obj->type == TYPE_COMMIT)
+ obj = &(((struct commit *) obj)->tree->object);
+ else if (obj->type == TYPE_TAG)
+ obj = ((struct tag *) obj)->tagged;
+ else
+ return NULL;
+ if (!obj->parsed)
+ parse_object(obj->sha1);
+ } while (1);
}