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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/extras/fontconfig/src/fclang.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/extras/fontconfig/src/fclang.c')
-rw-r--r--nx-X11/extras/fontconfig/src/fclang.c686
1 files changed, 686 insertions, 0 deletions
diff --git a/nx-X11/extras/fontconfig/src/fclang.c b/nx-X11/extras/fontconfig/src/fclang.c
new file mode 100644
index 000000000..fabf36a15
--- /dev/null
+++ b/nx-X11/extras/fontconfig/src/fclang.c
@@ -0,0 +1,686 @@
+/*
+ * $RCSId: xc/lib/fontconfig/src/fclang.c,v 1.7 2002/08/26 23:34:31 keithp Exp $
+ *
+ * Copyright © 2002 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "fcint.h"
+
+typedef struct {
+ FcChar8 *lang;
+ FcCharSet charset;
+} FcLangCharSet;
+
+typedef struct {
+ int begin;
+ int end;
+} FcLangCharSetRange;
+
+#include "../fc-lang/fclang.h"
+
+struct _FcLangSet {
+ FcChar32 map[NUM_LANG_SET_MAP];
+ FcStrSet *extra;
+};
+
+#define FcLangSetBitSet(ls, id) ((ls)->map[(id)>>5] |= ((FcChar32) 1 << ((id) & 0x1f)))
+#define FcLangSetBitGet(ls, id) (((ls)->map[(id)>>5] >> ((id) & 0x1f)) & 1)
+
+FcLangSet *
+FcFreeTypeLangSet (const FcCharSet *charset,
+ const FcChar8 *exclusiveLang)
+{
+ int i;
+ FcChar32 missing;
+ const FcCharSet *exclusiveCharset = 0;
+ FcLangSet *ls;
+
+
+ if (exclusiveLang)
+ exclusiveCharset = FcCharSetForLang (exclusiveLang);
+ ls = FcLangSetCreate ();
+ if (!ls)
+ return 0;
+ for (i = 0; i < NUM_LANG_CHAR_SET; i++)
+ {
+ /*
+ * Check for Han charsets to make fonts
+ * which advertise support for a single language
+ * not support other Han languages
+ */
+ if (exclusiveCharset &&
+ FcFreeTypeIsExclusiveLang (fcLangCharSets[i].lang) &&
+ fcLangCharSets[i].charset.leaves != exclusiveCharset->leaves)
+ {
+ continue;
+ }
+ missing = FcCharSetSubtractCount (&fcLangCharSets[i].charset, charset);
+ if (FcDebug() & FC_DBG_SCANV)
+ {
+ if (missing && missing < 10)
+ {
+ FcCharSet *missed = FcCharSetSubtract (&fcLangCharSets[i].charset,
+ charset);
+ FcChar32 ucs4;
+ FcChar32 map[FC_CHARSET_MAP_SIZE];
+ FcChar32 next;
+
+ printf ("\n%s(%d) ", fcLangCharSets[i].lang, missing);
+ printf ("{");
+ for (ucs4 = FcCharSetFirstPage (missed, map, &next);
+ ucs4 != FC_CHARSET_DONE;
+ ucs4 = FcCharSetNextPage (missed, map, &next))
+ {
+ int i, j;
+ for (i = 0; i < FC_CHARSET_MAP_SIZE; i++)
+ if (map[i])
+ {
+ for (j = 0; j < 32; j++)
+ if (map[i] & (1 << j))
+ printf (" %04x", ucs4 + i * 32 + j);
+ }
+ }
+ printf (" }\n\t");
+ FcCharSetDestroy (missed);
+ }
+ else
+ printf ("%s(%d) ", fcLangCharSets[i].lang, missing);
+ }
+ if (!missing)
+ FcLangSetBitSet (ls, i);
+ }
+
+ if (FcDebug() & FC_DBG_SCANV)
+ printf ("\n");
+
+
+ return ls;
+}
+
+#define FcLangEnd(c) ((c) == '-' || (c) == '\0')
+
+FcLangResult
+FcLangCompare (const FcChar8 *s1, const FcChar8 *s2)
+{
+ FcChar8 c1, c2;
+ FcLangResult result = FcLangDifferentLang;
+
+ for (;;)
+ {
+ c1 = *s1++;
+ c2 = *s2++;
+
+ c1 = FcToLower (c1);
+ c2 = FcToLower (c2);
+ if (c1 != c2)
+ {
+ if (FcLangEnd (c1) && FcLangEnd (c2))
+ result = FcLangDifferentCountry;
+ return result;
+ }
+ else if (!c1)
+ return FcLangEqual;
+ else if (c1 == '-')
+ result = FcLangDifferentCountry;
+ }
+}
+
+/*
+ * Return FcTrue when super contains sub.
+ *
+ * super contains sub if super and sub have the same
+ * language and either the same country or one
+ * is missing the country
+ */
+
+static FcBool
+FcLangContains (const FcChar8 *super, const FcChar8 *sub)
+{
+ FcChar8 c1, c2;
+
+ for (;;)
+ {
+ c1 = *super++;
+ c2 = *sub++;
+
+ c1 = FcToLower (c1);
+ c2 = FcToLower (c2);
+ if (c1 != c2)
+ {
+ /* see if super has a country while sub is mising one */
+ if (c1 == '-' && c2 == '\0')
+ return FcTrue;
+ /* see if sub has a country while super is mising one */
+ if (c1 == '\0' && c2 == '-')
+ return FcTrue;
+ return FcFalse;
+ }
+ else if (!c1)
+ return FcTrue;
+ }
+}
+
+const FcCharSet *
+FcCharSetForLang (const FcChar8 *lang)
+{
+ int i;
+ int country = -1;
+ for (i = 0; i < NUM_LANG_CHAR_SET; i++)
+ {
+ switch (FcLangCompare (lang, fcLangCharSets[i].lang)) {
+ case FcLangEqual:
+ return &fcLangCharSets[i].charset;
+ case FcLangDifferentCountry:
+ if (country == -1)
+ country = i;
+ default:
+ break;
+ }
+ }
+ if (country == -1)
+ return 0;
+ return &fcLangCharSets[i].charset;
+}
+
+FcLangSet *
+FcLangSetCreate (void)
+{
+ FcLangSet *ls;
+
+ ls = malloc (sizeof (FcLangSet));
+ if (!ls)
+ return 0;
+ FcMemAlloc (FC_MEM_LANGSET, sizeof (FcLangSet));
+ memset (ls->map, '\0', sizeof (ls->map));
+ ls->extra = 0;
+ return ls;
+}
+
+void
+FcLangSetDestroy (FcLangSet *ls)
+{
+ if (ls->extra)
+ FcStrSetDestroy (ls->extra);
+ FcMemFree (FC_MEM_LANGSET, sizeof (FcLangSet));
+ free (ls);
+}
+
+FcLangSet *
+FcLangSetCopy (const FcLangSet *ls)
+{
+ FcLangSet *new;
+
+ new = FcLangSetCreate ();
+ if (!new)
+ goto bail0;
+ memcpy (new->map, ls->map, sizeof (new->map));
+ if (ls->extra)
+ {
+ FcStrList *list;
+ FcChar8 *extra;
+
+ new->extra = FcStrSetCreate ();
+ if (!new->extra)
+ goto bail1;
+
+ list = FcStrListCreate (ls->extra);
+ if (!list)
+ goto bail1;
+
+ while ((extra = FcStrListNext (list)))
+ if (!FcStrSetAdd (new->extra, extra))
+ {
+ FcStrListDone (list);
+ goto bail1;
+ }
+ FcStrListDone (list);
+ }
+ return new;
+bail1:
+ FcLangSetDestroy (new);
+bail0:
+ return 0;
+}
+
+static int
+FcLangSetIndex (const FcChar8 *lang)
+{
+ int low, high, mid = 0;
+ int cmp = 0;
+ FcChar8 firstChar = FcToLower(lang[0]);
+ FcChar8 secondChar = firstChar ? FcToLower(lang[1]) : '\0';
+
+ if (firstChar < 'a')
+ {
+ low = 0;
+ high = fcLangCharSetRanges[0].begin;
+ }
+ else if(firstChar > 'z')
+ {
+ low = fcLangCharSetRanges[25].begin;
+ high = NUM_LANG_CHAR_SET - 1;
+ }
+ else
+ {
+ low = fcLangCharSetRanges[firstChar - 'a'].begin;
+ high = fcLangCharSetRanges[firstChar - 'a'].end;
+ /* no matches */
+ if (low > high)
+ return -low; /* next entry after where it would be */
+ }
+
+ while (low <= high)
+ {
+ mid = (high + low) >> 1;
+ if(fcLangCharSets[mid].lang[0] != firstChar)
+ cmp = FcStrCmpIgnoreCase(fcLangCharSets[mid].lang, lang);
+ else
+ { /* fast path for resolving 2-letter languages (by far the most common) after
+ * finding the first char (probably already true because of the hash table) */
+ cmp = fcLangCharSets[mid].lang[1] - secondChar;
+ if (cmp == 0 &&
+ (fcLangCharSets[mid].lang[2] != '\0' ||
+ lang[2] != '\0'))
+ {
+ cmp = FcStrCmpIgnoreCase(fcLangCharSets[mid].lang+2,
+ lang+2);
+ }
+ }
+ if (cmp == 0)
+ return mid;
+ if (cmp < 0)
+ low = mid + 1;
+ else
+ high = mid - 1;
+ }
+ if (cmp < 0)
+ mid++;
+ return -(mid + 1);
+}
+
+FcBool
+FcLangSetAdd (FcLangSet *ls, const FcChar8 *lang)
+{
+ int id;
+
+ id = FcLangSetIndex (lang);
+ if (id >= 0)
+ {
+ FcLangSetBitSet (ls, id);
+ return FcTrue;
+ }
+ if (!ls->extra)
+ {
+ ls->extra = FcStrSetCreate ();
+ if (!ls->extra)
+ return FcFalse;
+ }
+ return FcStrSetAdd (ls->extra, lang);
+}
+
+FcLangResult
+FcLangSetHasLang (const FcLangSet *ls, const FcChar8 *lang)
+{
+ int id;
+ FcLangResult best, r;
+ int i;
+
+ id = FcLangSetIndex (lang);
+ if (id < 0)
+ id = -id - 1;
+ else if (FcLangSetBitGet (ls, id))
+ return FcLangEqual;
+ best = FcLangDifferentLang;
+ for (i = id - 1; i >= 0; i--)
+ {
+ r = FcLangCompare (lang, fcLangCharSets[i].lang);
+ if (r == FcLangDifferentLang)
+ break;
+ if (FcLangSetBitGet (ls, i) && r < best)
+ best = r;
+ }
+ for (i = id; i < NUM_LANG_CHAR_SET; i++)
+ {
+ r = FcLangCompare (lang, fcLangCharSets[i].lang);
+ if (r == FcLangDifferentLang)
+ break;
+ if (FcLangSetBitGet (ls, i) && r < best)
+ best = r;
+ }
+ if (ls->extra)
+ {
+ FcStrList *list = FcStrListCreate (ls->extra);
+ FcChar8 *extra;
+ FcLangResult r;
+
+ if (list)
+ {
+ while (best > FcLangEqual && (extra = FcStrListNext (list)))
+ {
+ r = FcLangCompare (lang, extra);
+ if (r < best)
+ best = r;
+ }
+ FcStrListDone (list);
+ }
+ }
+ return best;
+}
+
+static FcLangResult
+FcLangSetCompareStrSet (const FcLangSet *ls, FcStrSet *set)
+{
+ FcStrList *list = FcStrListCreate (set);
+ FcLangResult r, best = FcLangDifferentLang;
+ FcChar8 *extra;
+
+ if (list)
+ {
+ while (best > FcLangEqual && (extra = FcStrListNext (list)))
+ {
+ r = FcLangSetHasLang (ls, extra);
+ if (r < best)
+ best = r;
+ }
+ FcStrListDone (list);
+ }
+ return best;
+}
+
+FcLangResult
+FcLangSetCompare (const FcLangSet *lsa, const FcLangSet *lsb)
+{
+ int i, j;
+ FcLangResult best, r;
+
+ for (i = 0; i < NUM_LANG_SET_MAP; i++)
+ if (lsa->map[i] & lsb->map[i])
+ return FcLangEqual;
+ best = FcLangDifferentLang;
+ for (j = 0; j < NUM_COUNTRY_SET; j++)
+ for (i = 0; i < NUM_LANG_SET_MAP; i++)
+ if ((lsa->map[i] & fcLangCountrySets[j][i]) &&
+ (lsb->map[i] & fcLangCountrySets[j][i]))
+ {
+ best = FcLangDifferentCountry;
+ break;
+ }
+ if (lsa->extra)
+ {
+ r = FcLangSetCompareStrSet (lsb, lsa->extra);
+ if (r < best)
+ best = r;
+ }
+ if (best > FcLangEqual && lsb->extra)
+ {
+ r = FcLangSetCompareStrSet (lsa, lsb->extra);
+ if (r < best)
+ best = r;
+ }
+ return best;
+}
+
+/*
+ * Used in computing values -- mustn't allocate any storage
+ */
+FcLangSet *
+FcLangSetPromote (const FcChar8 *lang)
+{
+ static FcLangSet ls;
+ static FcStrSet strs;
+ static FcChar8 *str;
+ int id;
+
+ memset (ls.map, '\0', sizeof (ls.map));
+ ls.extra = 0;
+ id = FcLangSetIndex (lang);
+ if (id > 0)
+ {
+ FcLangSetBitSet (&ls, id);
+ }
+ else
+ {
+ ls.extra = &strs;
+ strs.num = 1;
+ strs.size = 1;
+ strs.strs = &str;
+ strs.ref = 1;
+ str = (FcChar8 *) lang;
+ }
+ return &ls;
+}
+
+FcChar32
+FcLangSetHash (const FcLangSet *ls)
+{
+ FcChar32 h = 0;
+ int i;
+
+ for (i = 0; i < NUM_LANG_SET_MAP; i++)
+ h ^= ls->map[i];
+ if (ls->extra)
+ h ^= ls->extra->num;
+ return h;
+}
+
+FcLangSet *
+FcNameParseLangSet (const FcChar8 *string)
+{
+ FcChar8 lang[32],c;
+ int i;
+ FcLangSet *ls;
+
+ ls = FcLangSetCreate ();
+ if (!ls)
+ goto bail0;
+
+ for(;;)
+ {
+ for(i = 0; i < 31;i++)
+ {
+ c = *string++;
+ if(c == '\0' || c == '|')
+ break; /* end of this code */
+ lang[i] = c;
+ }
+ lang[i] = '\0';
+ if (!FcLangSetAdd (ls, lang))
+ goto bail1;
+ if(c == '\0')
+ break;
+ }
+ return ls;
+bail1:
+ FcLangSetDestroy (ls);
+bail0:
+ return 0;
+}
+
+FcBool
+FcNameUnparseLangSet (FcStrBuf *buf, const FcLangSet *ls)
+{
+ int i, bit;
+ FcChar32 bits;
+ FcBool first = FcTrue;
+
+ for (i = 0; i < NUM_LANG_SET_MAP; i++)
+ {
+ if ((bits = ls->map[i]))
+ {
+ for (bit = 0; bit <= 31; bit++)
+ if (bits & (1 << bit))
+ {
+ int id = (i << 5) | bit;
+ if (!first)
+ if (!FcStrBufChar (buf, '|'))
+ return FcFalse;
+ if (!FcStrBufString (buf, fcLangCharSets[id].lang))
+ return FcFalse;
+ first = FcFalse;
+ }
+ }
+ }
+ if (ls->extra)
+ {
+ FcStrList *list = FcStrListCreate (ls->extra);
+ FcChar8 *extra;
+
+ if (!list)
+ return FcFalse;
+ while ((extra = FcStrListNext (list)))
+ {
+ if (!first)
+ if (!FcStrBufChar (buf, '|'))
+ return FcFalse;
+ if (!FcStrBufString (buf, extra))
+ return FcFalse;
+ first = FcFalse;
+ }
+ }
+ return FcTrue;
+}
+
+FcBool
+FcLangSetEqual (const FcLangSet *lsa, const FcLangSet *lsb)
+{
+ int i;
+
+ for (i = 0; i < NUM_LANG_SET_MAP; i++)
+ {
+ if (lsa->map[i] != lsb->map[i])
+ return FcFalse;
+ }
+ if (!lsa->extra && !lsb->extra)
+ return FcTrue;
+ if (lsa->extra && lsb->extra)
+ return FcStrSetEqual (lsa->extra, lsb->extra);
+ return FcFalse;
+}
+
+static FcBool
+FcLangSetContainsLang (const FcLangSet *ls, const FcChar8 *lang)
+{
+ int id;
+ int i;
+
+ id = FcLangSetIndex (lang);
+ if (id < 0)
+ id = -id - 1;
+ else if (FcLangSetBitGet (ls, id))
+ return FcTrue;
+ /*
+ * search up and down among equal languages for a match
+ */
+ for (i = id - 1; i >= 0; i--)
+ {
+ if (FcLangCompare (fcLangCharSets[i].lang, lang) == FcLangDifferentLang)
+ break;
+ if (FcLangSetBitGet (ls, i) &&
+ FcLangContains (fcLangCharSets[i].lang, lang))
+ return FcTrue;
+ }
+ for (i = id; i < NUM_LANG_CHAR_SET; i++)
+ {
+ if (FcLangCompare (fcLangCharSets[i].lang, lang) == FcLangDifferentLang)
+ break;
+ if (FcLangSetBitGet (ls, i) &&
+ FcLangContains (fcLangCharSets[i].lang, lang))
+ return FcTrue;
+ }
+ if (ls->extra)
+ {
+ FcStrList *list = FcStrListCreate (ls->extra);
+ FcChar8 *extra;
+
+ if (list)
+ {
+ while ((extra = FcStrListNext (list)))
+ {
+ if (FcLangContains (extra, lang))
+ break;
+ }
+ FcStrListDone (list);
+ if (extra)
+ return FcTrue;
+ }
+ }
+ return FcFalse;
+}
+
+/*
+ * return FcTrue if lsa contains every language in lsb
+ */
+FcBool
+FcLangSetContains (const FcLangSet *lsa, const FcLangSet *lsb)
+{
+ int i, j;
+ FcChar32 missing;
+
+ if (FcDebug() & FC_DBG_MATCHV)
+ {
+ printf ("FcLangSet "); FcLangSetPrint (lsa);
+ printf (" contains "); FcLangSetPrint (lsb);
+ printf ("\n");
+ }
+ /*
+ * check bitmaps for missing language support
+ */
+ for (i = 0; i < NUM_LANG_SET_MAP; i++)
+ {
+ missing = lsb->map[i] & ~lsa->map[i];
+ if (missing)
+ {
+ for (j = 0; j < 32; j++)
+ if (missing & (1 << j))
+ {
+ if (!FcLangSetContainsLang (lsa,
+ fcLangCharSets[i*32 + j].lang))
+ {
+ if (FcDebug() & FC_DBG_MATCHV)
+ printf ("\tMissing bitmap %s\n", fcLangCharSets[i*32+j].lang);
+ return FcFalse;
+ }
+ }
+ }
+ }
+ if (lsb->extra)
+ {
+ FcStrList *list = FcStrListCreate (lsb->extra);
+ FcChar8 *extra;
+
+ if (list)
+ {
+ while ((extra = FcStrListNext (list)))
+ {
+ if (!FcLangSetContainsLang (lsa, extra))
+ {
+ if (FcDebug() & FC_DBG_MATCHV)
+ printf ("\tMissing string %s\n", extra);
+ break;
+ }
+ }
+ FcStrListDone (list);
+ if (extra)
+ return FcFalse;
+ }
+ }
+ return FcTrue;
+}