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tag: v1.5.0-rc4
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file 50 lines (45 sloc) 1.24 kb
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#include "cache.h"
#include "blob.h"

const char *blob_type = "blob";

struct blob *lookup_blob(const unsigned char *sha1)
{
struct object *obj = lookup_object(sha1);
if (!obj) {
struct blob *ret = alloc_blob_node();
created_object(sha1, &ret->object);
ret->object.type = OBJ_BLOB;
return ret;
}
if (!obj->type)
obj->type = OBJ_BLOB;
if (obj->type != OBJ_BLOB) {
error("Object %s is a %s, not a blob",
sha1_to_hex(sha1), typename(obj->type));
return NULL;
}
return (struct blob *) obj;
}

int parse_blob_buffer(struct blob *item, void *buffer, unsigned long size)
{
item->object.parsed = 1;
return 0;
}

int parse_blob(struct blob *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, blob_type))
                return error("Object %s not a blob",
                             sha1_to_hex(item->object.sha1));
ret = parse_blob_buffer(item, buffer, size);
free(buffer);
return ret;
}
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