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#define _GNU_SOURCE
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <drpm.h>
static void
read_drpm(const char * const filename)
{
drpm *delta = NULL;
int res = drpm_read(&delta, filename);
if (res != DRPM_ERR_OK)
errx(1, "drpm_read() failed for %s: %s",
filename, drpm_strerror(res));
if (delta == NULL)
errx(1, "drpm_read() returned a null delta for %s", filename);
unsigned type;
res = drpm_get_uint(delta, DRPM_TAG_TYPE, &type);
if (res != DRPM_ERR_OK)
errx(1, "drpm_get_uint(DRPM_TAG_TYPE) failed for %s: %s",
filename, drpm_strerror(res));
res = drpm_destroy(&delta);
if (res != DRPM_ERR_OK)
errx(1, "drpm_destroy() failed for %s: %s",
filename, drpm_strerror(res));
puts(type == DRPM_TYPE_STANDARD ? "standard" : "rpm-only");
}
int main(const int argc, const char * const argv[])
{
if (argc != 4)
errx(1, "Usage: examine old.rpm new.rpm tempdir");
const char * const oldfile = argv[1];
const char * const newfile = argv[2];
const char * const tempd = argv[3];
char *outfile;
if (asprintf(&outfile, "%s/noopt.rpm", tempd) < 0 || outfile == NULL)
err(1, "Could not build the noopt.rpm filename");
puts("make standard");
int res = drpm_make(oldfile, newfile, outfile, NULL);
if (res != DRPM_ERR_OK)
errx(1, "drpm_make(noopt) failed: %s",
drpm_strerror(res));
puts("read standard");
read_drpm(outfile);
puts("make options");
drpm_make_options *opts;
res = drpm_make_options_init(&opts);
if (res != DRPM_ERR_OK)
errx(1, "drpm_make_options_init() failed: %s",
drpm_strerror(res));
res = drpm_make_options_defaults(opts);
if (res != DRPM_ERR_OK)
errx(1, "drpm_make_options_defaults() failed: %s",
drpm_strerror(res));
res = drpm_make_options_set_type(opts, DRPM_TYPE_RPMONLY);
if (res != DRPM_ERR_OK)
errx(1, "drpm_make_options_set_type(RPMONLY) failed: %s",
drpm_strerror(res));
free(outfile);
if (asprintf(&outfile, "%s/only.rpm", tempd) < 0 || outfile == NULL)
err(1, "Could not build the only.rpm filename");
puts("make rpm-only");
res = drpm_make(oldfile, newfile, outfile, opts);
if (res != DRPM_ERR_OK)
errx(1, "drpm_make(only) failed: %s",
drpm_strerror(res));
puts("read rpm-only");
read_drpm(outfile);
res = drpm_make_options_destroy(&opts);
if (res != DRPM_ERR_OK)
errx(1, "drpm_make_options_destroy() failed: %s",
drpm_strerror(res));
puts("fine");
return 0;
}
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