#include "tree.h"
#include "blob.h"
+#include "commit.h"
+#include "tag.h"
#include "cache.h"
#include <stdlib.h>
const char *tree_type = "tree";
-struct tree *lookup_tree(unsigned char *sha1)
+static int read_one_entry(unsigned char *sha1, const char *base, int baselen, const char *pathname, unsigned mode, int stage)
+{
+ int len;
+ unsigned int size;
+ struct cache_entry *ce;
+
+ if (S_ISDIR(mode))
+ return READ_TREE_RECURSIVE;
+
+ len = strlen(pathname);
+ size = cache_entry_size(baselen + len);
+ ce = xmalloc(size);
+
+ memset(ce, 0, size);
+
+ ce->ce_mode = create_ce_mode(mode);
+ ce->ce_flags = create_ce_flags(baselen + len, stage);
+ memcpy(ce->name, base, baselen);
+ memcpy(ce->name + baselen, pathname, len+1);
+ memcpy(ce->sha1, sha1, 20);
+ return add_cache_entry(ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_SKIP_DFCHECK);
+}
+
+static int match_tree_entry(const char *base, int baselen, const char *path, unsigned int mode, const char **paths)
+{
+ const char *match;
+ int pathlen;
+
+ if (!paths)
+ return 1;
+ pathlen = strlen(path);
+ while ((match = *paths++) != NULL) {
+ int matchlen = strlen(match);
+
+ if (baselen >= matchlen) {
+ /* If it doesn't match, move along... */
+ if (strncmp(base, match, matchlen))
+ continue;
+ /* The base is a subdirectory of a path which was specified. */
+ return 1;
+ }
+
+ /* Does the base match? */
+ if (strncmp(base, match, baselen))
+ continue;
+
+ match += baselen;
+ matchlen -= baselen;
+
+ if (pathlen > matchlen)
+ continue;
+
+ if (matchlen > pathlen) {
+ if (match[pathlen] != '/')
+ continue;
+ if (!S_ISDIR(mode))
+ continue;
+ }
+
+ if (strncmp(path, match, pathlen))
+ continue;
+
+ return 1;
+ }
+ return 0;
+}
+
+int read_tree_recursive(void *buffer, unsigned long size,
+ 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;
+
+ if (size < len + 20 || sscanf(buffer, "%o", &mode) != 1)
+ return -1;
+
+ buffer = sha1 + 20;
+ size -= len + 20;
+
+ if (!match_tree_entry(base, baselen, path, mode, match))
+ continue;
+
+ switch (fn(sha1, base, baselen, path, mode, stage)) {
+ case 0:
+ continue;
+ case READ_TREE_RECURSIVE:
+ break;;
+ default:
+ return -1;
+ }
+ if (S_ISDIR(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);
+ memcpy(newbase, base, baselen);
+ memcpy(newbase + baselen, path, pathlen);
+ newbase[baselen + pathlen] = '/';
+ retval = read_tree_recursive(eltbuf, eltsize,
+ newbase,
+ baselen + pathlen + 1,
+ stage, match, fn);
+ free(eltbuf);
+ free(newbase);
+ if (retval)
+ return -1;
+ continue;
+ }
+ }
+ return 0;
+}
+
+int read_tree(void *buffer, unsigned long size, int stage, const char **match)
+{
+ return read_tree_recursive(buffer, size, "", 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 = malloc(sizeof(struct tree));
+ struct tree *ret = xmalloc(sizeof(struct tree));
memset(ret, 0, sizeof(struct tree));
created_object(sha1, &ret->object);
+ ret->object.type = tree_type;
return ret;
}
- if (obj->parsed && obj->type != tree_type) {
+ 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);
return NULL;
return (struct tree *) obj;
}
-int parse_tree(struct tree *item)
+int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size)
{
- char type[20];
- void *buffer, *bufptr;
- unsigned long size;
+ void *bufptr = buffer;
+ struct tree_entry_list **list_p;
+ int n_refs = 0;
+
if (item->object.parsed)
return 0;
item->object.parsed = 1;
- item->object.type = tree_type;
- buffer = bufptr = read_sha1_file(item->object.sha1, type, &size);
- if (!buffer)
- return error("Could not read %s",
- sha1_to_hex(item->object.sha1));
- if (strcmp(type, tree_type))
- return error("Object %s not a tree",
- sha1_to_hex(item->object.sha1));
+ 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, ' ');
sscanf(bufptr, "%o", &mode) != 1)
return -1;
- /* Warn about trees that don't do the recursive thing.. */
- if (strchr(path, '/')) {
- item->has_full_path = 1;
- }
+ 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 (S_ISDIR(mode)) {
- obj = &lookup_tree(file_sha1)->object;
+ if (entry->directory) {
+ entry->item.tree = lookup_tree(file_sha1);
+ obj = &entry->item.tree->object;
} else {
- obj = &lookup_blob(file_sha1)->object;
+ entry->item.blob = lookup_blob(file_sha1);
+ obj = &entry->item.blob->object;
}
- add_ref(&item->object, obj);
+ if (obj)
+ n_refs++;
+ *list_p = entry;
+ list_p = &entry->next;
+ }
+
+ if (track_object_refs) {
+ struct tree_entry_list *entry;
+ unsigned i = 0;
+ struct object_refs *refs = alloc_object_refs(n_refs);
+ for (entry = item->entries; entry; entry = entry->next)
+ refs->ref[i++] = entry->item.any;
+ set_object_refs(&item->object, refs);
}
+
return 0;
}
+
+int parse_tree(struct tree *item)
+{
+ char type[20];
+ void *buffer;
+ unsigned long size;
+ int ret;
+
+ if (item->object.parsed)
+ return 0;
+ buffer = read_sha1_file(item->object.sha1, type, &size);
+ if (!buffer)
+ return error("Could not read %s",
+ sha1_to_hex(item->object.sha1));
+ if (strcmp(type, tree_type)) {
+ free(buffer);
+ return error("Object %s not a tree",
+ sha1_to_hex(item->object.sha1));
+ }
+ ret = parse_tree_buffer(item, buffer, size);
+ free(buffer);
+ return ret;
+}
+
+struct tree *parse_tree_indirect(const unsigned char *sha1)
+{
+ struct object *obj = parse_object(sha1);
+ do {
+ if (!obj)
+ return NULL;
+ if (obj->type == tree_type)
+ return (struct tree *) obj;
+ else if (obj->type == commit_type)
+ obj = &(((struct commit *) obj)->tree->object);
+ else if (obj->type == tag_type)
+ obj = ((struct tag *) obj)->tagged;
+ else
+ return NULL;
+ if (!obj->parsed)
+ parse_object(obj->sha1);
+ } while (1);
+}