static Vector<String> strongAliasesForFamily(const String& family)
{
RefPtr<FcPattern> pattern = adoptRef(FcPatternCreate());
if (!FcPatternAddString(pattern.get(), FC_FAMILY, reinterpret_cast<const FcChar8*>(family.utf8().data())))
return Vector<String>();
FcConfigSubstitute(nullptr, pattern.get(), FcMatchPattern);
FcDefaultSubstitute(pattern.get());
FcUniquePtr<FcObjectSet> familiesOnly(FcObjectSetBuild(FC_FAMILY, nullptr));
RefPtr<FcPattern> minimal = adoptRef(FcPatternFilter(pattern.get(), familiesOnly.get()));
// We really want to match strong (preferred) and same (acceptable) only here.
// If a family name was specified, assume that any weak matches after the last strong match
// are weak (default) and ignore them.
// The reason for is that after substitution the pattern for 'sans-serif' looks like
// "wwwwwwwwwwwwwwswww" where there are many weak but preferred names, followed by defaults.
// So it is possible to have weakly matching but preferred names.
// In aliases, bindings are weak by default, so this is easy and common.
// If no family name was specified, we'll probably only get weak matches, but that's ok.
int lastStrongId = -1;
int numIds = 0;
for (int id = 0; ; ++id) {
AliasStrength result = strengthOfFirstAlias(*minimal);
if (result == AliasStrength::Done) {
numIds = id;
break;
}
if (result == AliasStrength::Strong)
lastStrongId = id;
if (!FcPatternRemove(minimal.get(), FC_FAMILY, 0))
return Vector<String>();
}
// If they were all weak, then leave the pattern alone.
if (lastStrongId < 0)
return Vector<String>();
// Remove everything after the last strong.
for (int id = lastStrongId + 1; id < numIds; ++id) {
if (!FcPatternRemove(pattern.get(), FC_FAMILY, lastStrongId + 1)) {
ASSERT_NOT_REACHED();
return Vector<String>();
}
}
// Take the resulting pattern and remove everything but the families.
minimal = adoptRef(FcPatternFilter(pattern.get(), familiesOnly.get()));
// Convert the pattern to a string, and cut out the non-family junk that gets added to the end.
char* patternChars = reinterpret_cast<char*>(FcPatternFormat(pattern.get(), reinterpret_cast<const FcChar8*>("%{family}")));
String patternString = String::fromUTF8(patternChars);
free(patternChars);
Vector<String> results;
patternString.split(',', results);
return results;
}
int
main (int argc, char **argv)
{
int verbose = 0;
int sort = 0, all = 0;
const FcChar8 *format = NULL;
int i;
FcObjectSet *os = 0;
FcFontSet *fs;
FcPattern *pat;
FcResult result;
#if HAVE_GETOPT_LONG || HAVE_GETOPT
int c;
#if HAVE_GETOPT_LONG
while ((c = getopt_long (argc, argv, "asvf:Vh", longopts, NULL)) != -1)
#else
while ((c = getopt (argc, argv, "asvf:Vh")) != -1)
#endif
{
switch (c) {
case 'a':
all = 1;
break;
case 's':
sort = 1;
break;
case 'v':
verbose = 1;
break;
case 'f':
format = (FcChar8 *) strdup (optarg);
break;
case 'V':
fprintf (stderr, "fontconfig version %d.%d.%d\n",
FC_MAJOR, FC_MINOR, FC_REVISION);
exit (0);
case 'h':
usage (argv[0], 0);
default:
usage (argv[0], 1);
}
}
i = optind;
#else
i = 1;
#endif
if (!FcInit ())
{
fprintf (stderr, "Can't init font config library\n");
return 1;
}
if (argv[i])
{
pat = FcNameParse ((FcChar8 *) argv[i]);
while (argv[++i])
{
if (!os)
os = FcObjectSetCreate ();
FcObjectSetAdd (os, argv[i]);
}
}
else
pat = FcPatternCreate ();
if (!pat)
return 1;
FcConfigSubstitute (0, pat, FcMatchPattern);
FcDefaultSubstitute (pat);
fs = FcFontSetCreate ();
if (sort || all)
{
FcFontSet *font_patterns;
int j;
font_patterns = FcFontSort (0, pat, all ? FcFalse : FcTrue, 0, &result);
if (!font_patterns || font_patterns->nfont == 0)
{
fputs("No fonts installed on the system\n", stderr);
return 1;
}
for (j = 0; j < font_patterns->nfont; j++)
{
FcPattern *font_pattern;
font_pattern = FcFontRenderPrepare (NULL, pat, font_patterns->fonts[j]);
if (font_pattern)
FcFontSetAdd (fs, font_pattern);
}
FcFontSetSortDestroy (font_patterns);
}
else
{
FcPattern *match;
match = FcFontMatch (0, pat, &result);
if (match)
FcFontSetAdd (fs, match);
}
FcPatternDestroy (pat);
if (!format)
{
if (os)
format = (const FcChar8 *) "%{=unparse}\n";
else
format = (const FcChar8 *) "%{=fcmatch}\n";
}
if (fs)
{
int j;
for (j = 0; j < fs->nfont; j++)
{
FcPattern *font;
font = FcPatternFilter (fs->fonts[j], os);
if (verbose)
{
FcPatternPrint (font);
}
else
{
FcChar8 *s;
s = FcPatternFormat (font, format);
if (s)
{
printf ("%s", s);
free (s);
}
}
FcPatternDestroy (font);
}
FcFontSetDestroy (fs);
}
if (os)
FcObjectSetDestroy (os);
FcFini ();
return 0;
}
