int versioncompare(const struct versionrevision *version,
const struct versionrevision *refversion) {
int r;
if (version->epoch > refversion->epoch) return 1;
if (version->epoch < refversion->epoch) return -1;
r= verrevcmp(version->version,refversion->version); if (r) return r;
return verrevcmp(version->revision,refversion->revision);
}
/**
* Compares two Debian versions.
*
* This function follows the convention of the comparator functions used by
* qsort().
*
* @see deb-version(5)
*
* @param a The first version.
* @param b The second version.
*
* @retval 0 If a and b are equal.
* @retval <0 If a is smaller than b.
* @retval >0 If a is greater than b.
*/
int
dpkg_version_compare(const struct dpkg_version *a,
const struct dpkg_version *b)
{
int r;
if (a->epoch > b->epoch)
return 1;
if (a->epoch < b->epoch)
return -1;
r = verrevcmp(a->version, b->version);
if (r)
return r;
return verrevcmp(a->revision, b->revision);
}
/* Compare version strings.
*
* @s1 first string to compare
* @s2 second string to compare
*
* @return an integer less than, equal to, or greater than zero, if @s1 is <, == or > than @s2.
*/
int
filevercmp (const char *s1, const char *s2)
{
const char *s1_pos, *s2_pos;
const char *s1_suffix, *s2_suffix;
size_t s1_len, s2_len;
int simple_cmp, result;
/* easy comparison to see if strings are identical */
simple_cmp = strcmp (s1, s2);
if (simple_cmp == 0)
return 0;
/* special handle for "", "." and ".." */
if (*s1 == '\0')
return -1;
if (*s2 == '\0')
return 1;
if (DIR_IS_DOT (s1))
return -1;
if (DIR_IS_DOT (s2))
return 1;
if (DIR_IS_DOTDOT (s1))
return -1;
if (DIR_IS_DOTDOT (s2))
return 1;
/* special handle for other hidden files */
if (*s1 == '.' && *s2 != '.')
return -1;
if (*s1 != '.' && *s2 == '.')
return 1;
if (*s1 == '.' && *s2 == '.')
{
s1++;
s2++;
}
/* "cut" file suffixes */
s1_pos = s1;
s2_pos = s2;
s1_suffix = match_suffix (&s1_pos);
s2_suffix = match_suffix (&s2_pos);
s1_len = (s1_suffix != NULL ? s1_suffix : s1_pos) - s1;
s2_len = (s2_suffix != NULL ? s2_suffix : s2_pos) - s2;
/* restore file suffixes if strings are identical after "cut" */
if ((s1_suffix != NULL || s2_suffix != NULL) && (s1_len == s2_len)
&& strncmp (s1, s2, s1_len) == 0)
{
s1_len = s1_pos - s1;
s2_len = s2_pos - s2;
}
result = verrevcmp (s1, s1_len, s2, s2_len);
return result == 0 ? simple_cmp : result;
}
int OPackageManager::compareVersions( const QString &ver1, const QString &ver2 )
{
// TODO - should this be in OIpkg???
int epoch1, epoch2;
QString version1, revision1;
QString version2, revision2;
parseVersion( ver1, &epoch1, &version1, &revision1 );
parseVersion( ver2, &epoch2, &version2, &revision2 );
if ( epoch1 > epoch2 )
return 1;
else if ( epoch1 < epoch2 )
return -1;
int r = verrevcmp( version1.latin1(), version2.latin1() );
if (r)
return r;
r = verrevcmp( revision1.latin1(), revision2.latin1() );
return r;
}
static gint cmp_vers(gconstpointer a, gconstpointer b) {
ASSERT_TYPE((Version *)a, T_VERSION);
ASSERT_TYPE((Version *)b, T_VERSION);
return -verrevcmp(((Version *)a)->version, ((Version *)b)->version);
}
