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authorDaniel Barkalow <barkalow@iabervon.org>2005-04-18 18:39:48 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-18 18:39:48 (GMT)
commit175785e5ff7395be8a458694a7df0511ac14e948 (patch)
tree3e65cde9bb577457d62c11fc6075f3a04a8d4bc9 /tree.c
parent6eb8ae00d4bceaf660a07d8bc5ab8d6ddccbe1af (diff)
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[PATCH] Implementations of parsing functions
This implements the parsing functions. Signed-Off-By: Daniel Barkalow <barkalow@iabervon.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'tree.c')
-rw-r--r--tree.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/tree.c b/tree.c
new file mode 100644
index 0000000..1aee098
--- /dev/null
+++ b/tree.c
@@ -0,0 +1,67 @@
+#include "tree.h"
+#include "blob.h"
+#include "cache.h"
+#include <stdlib.h>
+
+const char *tree_type = "tree";
+
+struct tree *lookup_tree(unsigned char *sha1)
+{
+ struct object *obj = lookup_object(sha1);
+ if (!obj) {
+ struct tree *ret = malloc(sizeof(struct tree));
+ memset(ret, 0, sizeof(struct tree));
+ created_object(sha1, &ret->object);
+ return ret;
+ }
+ if (obj->parsed && 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)
+{
+ char type[20];
+ void *buffer, *bufptr;
+ unsigned long size;
+ 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));
+ while (size) {
+ struct object *obj;
+ 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;
+
+ /* Warn about trees that don't do the recursive thing.. */
+ if (strchr(path, '/')) {
+ item->has_full_path = 1;
+ }
+
+ bufptr += len + 20;
+ size -= len + 20;
+
+ if (S_ISDIR(mode)) {
+ obj = &lookup_tree(file_sha1)->object;
+ } else {
+ obj = &lookup_blob(file_sha1)->object;
+ }
+ add_ref(&item->object, obj);
+ }
+ return 0;
+}