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68 lines
1.5 KiB
C
68 lines
1.5 KiB
C
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#include "tree.h"
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#include "blob.h"
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#include "cache.h"
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#include <stdlib.h>
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const char *tree_type = "tree";
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struct tree *lookup_tree(unsigned char *sha1)
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{
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struct object *obj = lookup_object(sha1);
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if (!obj) {
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struct tree *ret = malloc(sizeof(struct tree));
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memset(ret, 0, sizeof(struct tree));
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created_object(sha1, &ret->object);
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return ret;
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}
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if (obj->parsed && obj->type != tree_type) {
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error("Object %s is a %s, not a tree",
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sha1_to_hex(sha1), obj->type);
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return NULL;
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}
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return (struct tree *) obj;
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}
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int parse_tree(struct tree *item)
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{
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char type[20];
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void *buffer, *bufptr;
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unsigned long size;
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if (item->object.parsed)
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return 0;
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item->object.parsed = 1;
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item->object.type = tree_type;
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buffer = bufptr = read_sha1_file(item->object.sha1, type, &size);
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if (!buffer)
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return error("Could not read %s",
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sha1_to_hex(item->object.sha1));
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if (strcmp(type, tree_type))
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return error("Object %s not a tree",
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sha1_to_hex(item->object.sha1));
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while (size) {
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struct object *obj;
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int len = 1+strlen(bufptr);
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unsigned char *file_sha1 = bufptr + len;
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char *path = strchr(bufptr, ' ');
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unsigned int mode;
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if (size < len + 20 || !path ||
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sscanf(bufptr, "%o", &mode) != 1)
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return -1;
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/* Warn about trees that don't do the recursive thing.. */
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if (strchr(path, '/')) {
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item->has_full_path = 1;
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}
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bufptr += len + 20;
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size -= len + 20;
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if (S_ISDIR(mode)) {
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obj = &lookup_tree(file_sha1)->object;
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} else {
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obj = &lookup_blob(file_sha1)->object;
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}
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add_ref(&item->object, obj);
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}
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return 0;
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}
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