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8f1d2e6f49
ISO C99 (and GCC 3.x or later) lets you write a flexible array
at the end of a structure, like this:
struct frotz {
int xyzzy;
char nitfol[]; /* more */
};
GCC 2.95 and 2.96 let you to do this with "char nitfol[0]";
unfortunately this is not allowed by ISO C90.
This declares such construct like this:
struct frotz {
int xyzzy;
char nitfol[FLEX_ARRAY]; /* more */
};
and git-compat-util.h defines FLEX_ARRAY to 0 for gcc 2.95 and
empty for others.
If you are using a C90 C compiler, you should be able
to override this with CFLAGS=-DFLEX_ARRAY=1 from the
command line of "make".
Signed-off-by: Junio C Hamano <junkio@cox.net>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
#include "cache.h"
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#include "blob.h"
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#include <stdlib.h>
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const char *blob_type = "blob";
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struct blob *lookup_blob(const 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 blob *ret = xmalloc(sizeof(struct blob));
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memset(ret, 0, sizeof(struct blob));
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created_object(sha1, &ret->object);
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ret->object.type = blob_type;
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return ret;
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}
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if (!obj->type)
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obj->type = blob_type;
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if (obj->type != blob_type) {
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error("Object %s is a %s, not a blob",
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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 blob *) obj;
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}
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int parse_blob_buffer(struct blob *item, void *buffer, unsigned long size)
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{
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item->object.parsed = 1;
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return 0;
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}
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int parse_blob(struct blob *item)
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{
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char type[20];
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void *buffer;
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unsigned long size;
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int ret;
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if (item->object.parsed)
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return 0;
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buffer = 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, blob_type))
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return error("Object %s not a blob",
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sha1_to_hex(item->object.sha1));
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ret = parse_blob_buffer(item, buffer, size);
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free(buffer);
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return ret;
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}
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