int swap __attribute__()

in src/readelf.c [549:590]

• 42 lines of code
• 17 McCabe index (conditional complexity)

    int swap __attribute__((__unused__)), uint32_t namesz, uint32_t descsz,
    size_t noff, size_t doff, int *flags)
{
	if (namesz == 4 && strcmp(RCAST(char *, &nbuf[noff]), "GNU") == 0 &&
	    type == NT_GNU_BUILD_ID && (descsz >= 4 && descsz <= 20)) {
		uint8_t desc[20];
		const char *btype;
		uint32_t i;
		*flags |= FLAGS_DID_BUILD_ID;
		switch (descsz) {
		case 8:
		    btype = "xxHash";
		    break;
		case 16:
		    btype = "md5/uuid";
		    break;
		case 20:
		    btype = "sha1";
		    break;
		default:
		    btype = "unknown";
		    break;
		}
		if (file_printf(ms, ", BuildID[%s]=", btype) == -1)
			return -1;
		memcpy(desc, &nbuf[doff], descsz);
		for (i = 0; i < descsz; i++)
		    if (file_printf(ms, "%02x", desc[i]) == -1)
			return -1;
		return 1;
	}
	if (namesz == 4 && strcmp(RCAST(char *, &nbuf[noff]), "Go") == 0 &&
	    type == NT_GO_BUILD_ID && descsz < 128) {
		char buf[256];
		if (file_printf(ms, ", Go BuildID=%s",
		    file_copystr(buf, sizeof(buf), descsz,
		    RCAST(const char *, &nbuf[doff]))) == -1)
			return -1;
		return 1;
	}
	return 0;
}