From 175785e5ff7395be8a458694a7df0511ac14e948 Mon Sep 17 00:00:00 2001 From: Daniel Barkalow Date: Mon, 18 Apr 2005 11:39:48 -0700 Subject: [PATCH] Implementations of parsing functions This implements the parsing functions. Signed-Off-By: Daniel Barkalow Signed-off-by: Linus Torvalds --- tree.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 67 insertions(+) create mode 100644 tree.c (limited to 'tree.c') diff --git a/tree.c b/tree.c new file mode 100644 index 0000000000..1aee098117 --- /dev/null +++ b/tree.c @@ -0,0 +1,67 @@ +#include "tree.h" +#include "blob.h" +#include "cache.h" +#include + +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; +} -- cgit v1.2.3