/* Example 2 from Maximum RPM book by Edward C. Bailey
 * Updated for 2.5.6 20 Mar 99 by Scott Bronson
 * Updated again for 3.0.3 4 Oct 99 by Scott Bronson
 */

/* This iterates through all RPMs by name, using strcmp
 * to find the RPM named on the command line.  See Example 3
 * for a much better way of doing this
 */

#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>

#include <rpmlib.h>

#ifndef	HEADER_DUMP_INLINE
/**
 * Dump a header in human readable format (for debugging).
 * @param h		header
 * @param flags		0 or HEADER_DUMP_INLINE
 * @param tags		array of tag name/value pairs
 */
void headerDump(Header h, FILE *f, int flags,
		const struct headerTagTableEntry_s * tags)
	/*@globals fileSystem @*/
	/*@modifies f, fileSystem @*/;
#define HEADER_DUMP_INLINE   1
#endif

int main( int argc, char **argv )
{
    rpmdbMatchIterator mi;
    Header h;
    int_32 type, count;
    char *name;
    rpmdb db;

    rpmReadConfigFiles( NULL, NULL );

    if( rpmdbOpen( "", &db, O_RDONLY, 0644 ) != 0 ) {
	fprintf( stderr, "cannot open database!\n" );
	exit(EXIT_FAILURE);
    }

    mi = rpmdbInitIterator(db, RPMDBI_PACKAGES, NULL, 0);
    while ((h = rpmdbNextIterator(mi)) != NULL) {

	headerGetEntry( h, RPMTAG_NAME, &type, (void**)&name, &count );
	if( strcmp(name,argv[1]) == 0 )
	    headerDump( h, stdout, HEADER_DUMP_INLINE, rpmTagTable );

	/*
	 * Note that the header reference is "owned" by the iterator,
	 * so no headerFree() is necessary.
	 */

    }
    mi = rpmdbFreeIterator(mi);

    rpmdbClose( db );

    return 0;
}