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author | marha <marha@users.sourceforge.net> | 2012-03-08 11:23:54 +0100 |
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committer | marha <marha@users.sourceforge.net> | 2012-03-08 11:23:54 +0100 |
commit | b4e09d9f9c2cb930daef6b578e3051e71425ed7f (patch) | |
tree | 2f7978bbc080eacca775af19715931ae34c23836 /fontconfig/src/fccharset.c | |
parent | 50ace52bb8308fd62b8bad9ae912dc18c4ae32ff (diff) | |
download | vcxsrv-b4e09d9f9c2cb930daef6b578e3051e71425ed7f.tar.gz vcxsrv-b4e09d9f9c2cb930daef6b578e3051e71425ed7f.tar.bz2 vcxsrv-b4e09d9f9c2cb930daef6b578e3051e71425ed7f.zip |
fontconfig libXau libXdmcp libXext libXft libXinerama libXmu pixman mesa
git update 8 Mar 2012
Diffstat (limited to 'fontconfig/src/fccharset.c')
-rw-r--r-- | fontconfig/src/fccharset.c | 175 |
1 files changed, 103 insertions, 72 deletions
diff --git a/fontconfig/src/fccharset.c b/fontconfig/src/fccharset.c index df1d2b538..8c1d85819 100644 --- a/fontconfig/src/fccharset.c +++ b/fontconfig/src/fccharset.c @@ -54,28 +54,31 @@ FcCharSetDestroy (FcCharSet *fcs) { int i; - if (fcs->ref == FC_REF_CONSTANT) + if (fcs) { - FcCacheObjectDereference (fcs); - return; - } - if (--fcs->ref > 0) - return; - for (i = 0; i < fcs->num; i++) - { - FcMemFree (FC_MEM_CHARLEAF, sizeof (FcCharLeaf)); - free (FcCharSetLeaf (fcs, i)); - } - if (fcs->num) - { - /* the numbers here are estimates */ - FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (intptr_t)); - free (FcCharSetLeaves (fcs)); - FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (FcChar16)); - free (FcCharSetNumbers (fcs)); + if (fcs->ref == FC_REF_CONSTANT) + { + FcCacheObjectDereference (fcs); + return; + } + if (--fcs->ref > 0) + return; + for (i = 0; i < fcs->num; i++) + { + FcMemFree (FC_MEM_CHARLEAF, sizeof (FcCharLeaf)); + free (FcCharSetLeaf (fcs, i)); + } + if (fcs->num) + { + /* the numbers here are estimates */ + FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (intptr_t)); + free (FcCharSetLeaves (fcs)); + FcMemFree (FC_MEM_CHARSET, fcs->num * sizeof (FcChar16)); + free (FcCharSetNumbers (fcs)); + } + FcMemFree (FC_MEM_CHARSET, sizeof (FcCharSet)); + free (fcs); } - FcMemFree (FC_MEM_CHARSET, sizeof (FcCharSet)); - free (fcs); } /* @@ -252,7 +255,7 @@ FcCharSetAddChar (FcCharSet *fcs, FcChar32 ucs4) FcCharLeaf *leaf; FcChar32 *b; - if (fcs->ref == FC_REF_CONSTANT) + if (fcs == NULL || fcs->ref == FC_REF_CONSTANT) return FcFalse; leaf = FcCharSetFindLeafCreate (fcs, ucs4); if (!leaf) @@ -268,7 +271,7 @@ FcCharSetDelChar (FcCharSet *fcs, FcChar32 ucs4) FcCharLeaf *leaf; FcChar32 *b; - if (fcs->ref == FC_REF_CONSTANT) + if (fcs == NULL || fcs->ref == FC_REF_CONSTANT) return FcFalse; leaf = FcCharSetFindLeaf (fcs, ucs4); if (!leaf) @@ -342,10 +345,13 @@ FcCharSetIterStart (const FcCharSet *fcs, FcCharSetIter *iter) FcCharSet * FcCharSetCopy (FcCharSet *src) { - if (src->ref != FC_REF_CONSTANT) - src->ref++; - else - FcCacheObjectReference (src); + if (src) + { + if (src->ref != FC_REF_CONSTANT) + src->ref++; + else + FcCacheObjectReference (src); + } return src; } @@ -357,6 +363,8 @@ FcCharSetEqual (const FcCharSet *a, const FcCharSet *b) if (a == b) return FcTrue; + if (!a || !b) + return FcFalse; for (FcCharSetIterStart (a, &ai), FcCharSetIterStart (b, &bi); ai.leaf && bi.leaf; FcCharSetIterNext (a, &ai), FcCharSetIterNext (b, &bi)) @@ -394,6 +402,8 @@ FcCharSetOperate (const FcCharSet *a, FcCharSet *fcs; FcCharSetIter ai, bi; + if (!a || !b) + goto bail0; fcs = FcCharSetCreate (); if (!fcs) goto bail0; @@ -493,6 +503,9 @@ FcCharSetMerge (FcCharSet *a, const FcCharSet *b, FcBool *changed) int ai = 0, bi = 0; FcChar16 an, bn; + if (!a || !b) + return FcFalse; + if (a->ref == FC_REF_CONSTANT) { if (changed) *changed = FcFalse; @@ -561,7 +574,11 @@ FcCharSetSubtract (const FcCharSet *a, const FcCharSet *b) FcBool FcCharSetHasChar (const FcCharSet *fcs, FcChar32 ucs4) { - FcCharLeaf *leaf = FcCharSetFindLeaf (fcs, ucs4); + FcCharLeaf *leaf; + + if (!fcs) + return FcFalse; + leaf = FcCharSetFindLeaf (fcs, ucs4); if (!leaf) return FcFalse; return (leaf->map[(ucs4 & 0xff) >> 5] & (1 << (ucs4 & 0x1f))) != 0; @@ -586,28 +603,31 @@ FcCharSetIntersectCount (const FcCharSet *a, const FcCharSet *b) FcCharSetIter ai, bi; FcChar32 count = 0; - FcCharSetIterStart (a, &ai); - FcCharSetIterStart (b, &bi); - while (ai.leaf && bi.leaf) + if (a && b) { - if (ai.ucs4 == bi.ucs4) - { - FcChar32 *am = ai.leaf->map; - FcChar32 *bm = bi.leaf->map; - int i = 256/32; - while (i--) - count += FcCharSetPopCount (*am++ & *bm++); - FcCharSetIterNext (a, &ai); - } - else if (ai.ucs4 < bi.ucs4) - { - ai.ucs4 = bi.ucs4; - FcCharSetIterSet (a, &ai); - } - if (bi.ucs4 < ai.ucs4) + FcCharSetIterStart (a, &ai); + FcCharSetIterStart (b, &bi); + while (ai.leaf && bi.leaf) { - bi.ucs4 = ai.ucs4; - FcCharSetIterSet (b, &bi); + if (ai.ucs4 == bi.ucs4) + { + FcChar32 *am = ai.leaf->map; + FcChar32 *bm = bi.leaf->map; + int i = 256/32; + while (i--) + count += FcCharSetPopCount (*am++ & *bm++); + FcCharSetIterNext (a, &ai); + } + else if (ai.ucs4 < bi.ucs4) + { + ai.ucs4 = bi.ucs4; + FcCharSetIterSet (a, &ai); + } + if (bi.ucs4 < ai.ucs4) + { + bi.ucs4 = ai.ucs4; + FcCharSetIterSet (b, &bi); + } } } return count; @@ -619,13 +639,16 @@ FcCharSetCount (const FcCharSet *a) FcCharSetIter ai; FcChar32 count = 0; - for (FcCharSetIterStart (a, &ai); ai.leaf; FcCharSetIterNext (a, &ai)) + if (a) { - int i = 256/32; - FcChar32 *am = ai.leaf->map; + for (FcCharSetIterStart (a, &ai); ai.leaf; FcCharSetIterNext (a, &ai)) + { + int i = 256/32; + FcChar32 *am = ai.leaf->map; - while (i--) - count += FcCharSetPopCount (*am++); + while (i--) + count += FcCharSetPopCount (*am++); + } } return count; } @@ -636,31 +659,34 @@ FcCharSetSubtractCount (const FcCharSet *a, const FcCharSet *b) FcCharSetIter ai, bi; FcChar32 count = 0; - FcCharSetIterStart (a, &ai); - FcCharSetIterStart (b, &bi); - while (ai.leaf) + if (a && b) { - if (ai.ucs4 <= bi.ucs4) + FcCharSetIterStart (a, &ai); + FcCharSetIterStart (b, &bi); + while (ai.leaf) { - FcChar32 *am = ai.leaf->map; - int i = 256/32; - if (ai.ucs4 == bi.ucs4) + if (ai.ucs4 <= bi.ucs4) { - FcChar32 *bm = bi.leaf->map; - while (i--) - count += FcCharSetPopCount (*am++ & ~*bm++); + FcChar32 *am = ai.leaf->map; + int i = 256/32; + if (ai.ucs4 == bi.ucs4) + { + FcChar32 *bm = bi.leaf->map; + while (i--) + count += FcCharSetPopCount (*am++ & ~*bm++); + } + else + { + while (i--) + count += FcCharSetPopCount (*am++); + } + FcCharSetIterNext (a, &ai); } - else + else if (bi.leaf) { - while (i--) - count += FcCharSetPopCount (*am++); + bi.ucs4 = ai.ucs4; + FcCharSetIterSet (b, &bi); } - FcCharSetIterNext (a, &ai); - } - else if (bi.leaf) - { - bi.ucs4 = ai.ucs4; - FcCharSetIterSet (b, &bi); } } return count; @@ -675,7 +701,10 @@ FcCharSetIsSubset (const FcCharSet *a, const FcCharSet *b) int ai, bi; FcChar16 an, bn; - if (a == b) return FcTrue; + if (a == b) + return FcTrue; + if (!a || !b) + return FcFalse; bi = 0; ai = 0; while (ai < a->num && bi < b->num) @@ -734,6 +763,8 @@ FcCharSetNextPage (const FcCharSet *a, FcCharSetIter ai; FcChar32 page; + if (!a) + return FC_CHARSET_DONE; ai.ucs4 = *next; FcCharSetIterSet (a, &ai); if (!ai.leaf) |