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Sourcecode: tagtool version File versions  Download package

prefs_versions.c

#include <config.h>

#include <string.h>
#include <stdlib.h>
#include <glib.h>

#include "elist.h"
#include "prefs.h"
#include "prefs_versions.h"


/*** private functions ******************************************************/

static int compare_version(char *v1, char *v2)
{
      char *p1, *p2;
      int n1, n2;

      p1 = v1;
      p2 = v2;

      while (*p1 && *p2) {
            n1 = atoi(p1);
            n2 = atoi(p2);

            if (n1 < n2) return -1;
            if (n1 > n2) return 1;

            p1 = strchr(p1, '.');
            p2 = strchr(p2, '.');

            if (!p1 && p2) return -1;
            if (p1 && !p2) return 1;
            if (!p1 && !p2) return 0;

            p1++;
            p2++;
      }

      return 0;
}


/*** public functions *******************************************************/

gboolean prefs_versions_allow(char *file_ver)
{
      /* allow interval from 0.5 to current version */
      if (compare_version(file_ver, "0.5") >= 0 && compare_version(file_ver, PACKAGE_VERSION) <= 0)
            return TRUE;

      g_warning("Preferences file version is incompatible (%s)", file_ver);
      return FALSE;
}


void prefs_versions_convert(char *file_ver)
{
      gboolean conv = FALSE;

      /* changes in 0.6 */
      if (compare_version(file_ver, "0.6") < 0) {

            /* file name templates changed, delete old ones */
            pref_unset("tt:format_mru");
            pref_unset("rt:format_mru");

            conv = TRUE;
      }

      /* changes in 0.9 */
      if (compare_version(file_ver, "0.9") < 0) {

            /* "vorbis_edit:genre_mru" was renamed to "common_edit:genre_mru" */
            GEList *genre_list = pref_get_ref("vorbis_edit:genre_mru");
            if (genre_list) {
                  pref_set("common_edit:genre_mru", PREF_STRING | PREF_LIST, genre_list);
                  pref_unset("vorbis_edit:genre_mru");
            }
            
            conv = TRUE;
      }

      if (conv)
            g_warning("Converted old preferences file (%s)", file_ver);
}



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