The Tor Browser: gfx/skia/trunk/src/ports/SkFontConfigInterface

gfx/skia/trunk/src/ports/SkFontConfigInterface_direct.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/ports/SkFontConfigInterface_direct.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  * Copyright 2009 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 /* migrated from chrome/src/skia/ext/SkFontHost_fontconfig_direct.cpp */
 #include <string>
 #include <unistd.h>
 #include <fcntl.h>
 #include <fontconfig/fontconfig.h>
 #include "SkBuffer.h"
 #include "SkFontConfigInterface.h"
 #include "SkStream.h"
 size_t SkFontConfigInterface::FontIdentity::writeToMemory(void* addr) const {
     size_t size = sizeof(fID) + sizeof(fTTCIndex);
     size += sizeof(int32_t) + sizeof(int32_t) + sizeof(uint8_t); // weight, width, italic
     size += sizeof(int32_t) + fString.size();    // store length+data
     if (addr) {
         SkWBuffer buffer(addr, size);
         buffer.write32(fID);
         buffer.write32(fTTCIndex);
         buffer.write32(fString.size());
         buffer.write32(fStyle.weight());
         buffer.write32(fStyle.width());
         buffer.write8(fStyle.slant());
         buffer.write(fString.c_str(), fString.size());
         buffer.padToAlign4();
         SkASSERT(buffer.pos() == size);
     }
     return size;
 }
 size_t SkFontConfigInterface::FontIdentity::readFromMemory(const void* addr,
                                                            size_t size) {
     SkRBuffer buffer(addr, size);
     (void)buffer.readU32(&fID);
     (void)buffer.readS32(&fTTCIndex);
     uint32_t strLen, weight, width;
     (void)buffer.readU32(&strLen);
     (void)buffer.readU32(&weight);
     (void)buffer.readU32(&width);
     uint8_t u8;
     (void)buffer.readU8(&u8);
     SkFontStyle::Slant slant = (SkFontStyle::Slant)u8;
     fStyle = SkFontStyle(weight, width, slant);
     fString.resize(strLen);
     (void)buffer.read(fString.writable_str(), strLen);
     buffer.skipToAlign4();
     return buffer.pos();    // the actual number of bytes read
 }
 #ifdef SK_DEBUG
 static void make_iden(SkFontConfigInterface::FontIdentity* iden) {
     iden->fID = 10;
     iden->fTTCIndex = 2;
     iden->fString.set("Hello world");
     iden->fStyle = SkFontStyle(300, 6, SkFontStyle::kItalic_Slant);
 }
 static void test_writeToMemory(const SkFontConfigInterface::FontIdentity& iden0,
                                int initValue) {
     SkFontConfigInterface::FontIdentity iden1;
     size_t size0 = iden0.writeToMemory(NULL);
     SkAutoMalloc storage(size0);
     memset(storage.get(), initValue, size0);
     size_t size1 = iden0.writeToMemory(storage.get());
     SkASSERT(size0 == size1);
     SkASSERT(iden0 != iden1);
     size_t size2 = iden1.readFromMemory(storage.get(), size1);
     SkASSERT(size2 == size1);
     SkASSERT(iden0 == iden1);
 }
 static void fontconfiginterface_unittest() {
     SkFontConfigInterface::FontIdentity iden0, iden1;
     SkASSERT(iden0 == iden1);
     make_iden(&iden0);
     SkASSERT(iden0 != iden1);
     make_iden(&iden1);
     SkASSERT(iden0 == iden1);
     test_writeToMemory(iden0, 0);
     test_writeToMemory(iden0, 0);
 }
 #endif
 class SkFontConfigInterfaceDirect : public SkFontConfigInterface {
 public:
             SkFontConfigInterfaceDirect();
     virtual ~SkFontConfigInterfaceDirect();
     virtual bool matchFamilyName(const char familyName[],
                                  SkTypeface::Style requested,
                                  FontIdentity* outFontIdentifier,
                                  SkString* outFamilyName,
                                  SkTypeface::Style* outStyle) SK_OVERRIDE;
     virtual SkStream* openStream(const FontIdentity&) SK_OVERRIDE;
     // new APIs
     virtual SkDataTable* getFamilyNames() SK_OVERRIDE;
     virtual bool matchFamilySet(const char inFamilyName[],
                                 SkString* outFamilyName,
                                 SkTArray<FontIdentity>*) SK_OVERRIDE;
 private:
     SkMutex mutex_;
 };
 SkFontConfigInterface* SkFontConfigInterface::GetSingletonDirectInterface() {
     static SkFontConfigInterface* gDirect;
     if (NULL == gDirect) {
         static SkMutex gMutex;
         SkAutoMutexAcquire ac(gMutex);
         if (NULL == gDirect) {
             gDirect = new SkFontConfigInterfaceDirect;
         }
     }
     return gDirect;
 }
 ///////////////////////////////////////////////////////////////////////////////
 // Returns the string from the pattern, or NULL
 static const char* get_name(FcPattern* pattern, const char field[],
                             int index = 0) {
     const char* name;
     if (FcPatternGetString(pattern, field, index,
                            (FcChar8**)&name) != FcResultMatch) {
         name = NULL;
     }
     return name;
 }
 ///////////////////////////////////////////////////////////////////////////////
 namespace {
 // Equivalence classes, used to match the Liberation and other fonts
 // with their metric-compatible replacements.  See the discussion in
 // GetFontEquivClass().
 enum FontEquivClass
 {
     OTHER,
     SANS,
     SERIF,
     MONO,
     SYMBOL,
     PGOTHIC,
     GOTHIC,
     PMINCHO,
     MINCHO,
     SIMSUN,
     NSIMSUN,
     SIMHEI,
     PMINGLIU,
     MINGLIU,
     PMINGLIUHK,
     MINGLIUHK,
     CAMBRIA,
     CALIBRI,
 };
 // Match the font name against a whilelist of fonts, returning the equivalence
 // class.
 FontEquivClass GetFontEquivClass(const char* fontname)
 {
     // It would be nice for fontconfig to tell us whether a given suggested
     // replacement is a "strong" match (that is, an equivalent font) or
     // a "weak" match (that is, fontconfig's next-best attempt at finding a
     // substitute).  However, I played around with the fontconfig API for
     // a good few hours and could not make it reveal this information.
     //
     // So instead, we hardcode.  Initially this function emulated
     //   /etc/fonts/conf.d/30-metric-aliases.conf
     // from my Ubuntu system, but we're better off being very conservative.
     // Arimo, Tinos and Cousine are a set of fonts metric-compatible with
     // Arial, Times New Roman and Courier New  with a character repertoire
     // much larger than Liberation. Note that Cousine is metrically
     // compatible with Courier New, but the former is sans-serif while
     // the latter is serif.
     struct FontEquivMap {
         FontEquivClass clazz;
         const char name[40];
     };
     static const FontEquivMap kFontEquivMap[] = {
         { SANS, "Arial" },
         { SANS, "Arimo" },
         { SANS, "Liberation Sans" },
         { SERIF, "Times New Roman" },
         { SERIF, "Tinos" },
         { SERIF, "Liberation Serif" },
         { MONO, "Courier New" },
         { MONO, "Cousine" },
         { MONO, "Liberation Mono" },
         { SYMBOL, "Symbol" },
         { SYMBOL, "Symbol Neu" },
         // ＭＳ Ｐゴシック
         { PGOTHIC, "MS PGothic" },
         { PGOTHIC, "\xef\xbc\xad\xef\xbc\xb3 \xef\xbc\xb0"
                    "\xe3\x82\xb4\xe3\x82\xb7\xe3\x83\x83\xe3\x82\xaf" },
         { PGOTHIC, "IPAPGothic" },
         { PGOTHIC, "MotoyaG04Gothic" },
         // ＭＳ ゴシック
         { GOTHIC, "MS Gothic" },
         { GOTHIC, "\xef\xbc\xad\xef\xbc\xb3 "
                   "\xe3\x82\xb4\xe3\x82\xb7\xe3\x83\x83\xe3\x82\xaf" },
         { GOTHIC, "IPAGothic" },
         { GOTHIC, "MotoyaG04GothicMono" },
         // ＭＳ Ｐ明朝
         { PMINCHO, "MS PMincho" },
         { PMINCHO, "\xef\xbc\xad\xef\xbc\xb3 \xef\xbc\xb0"
                    "\xe6\x98\x8e\xe6\x9c\x9d"},
         { PMINCHO, "IPAPMincho" },
         { PMINCHO, "MotoyaG04Mincho" },
         // ＭＳ 明朝
         { MINCHO, "MS Mincho" },
         { MINCHO, "\xef\xbc\xad\xef\xbc\xb3 \xe6\x98\x8e\xe6\x9c\x9d" },
         { MINCHO, "IPAMincho" },
         { MINCHO, "MotoyaG04MinchoMono" },
         // 宋体
         { SIMSUN, "Simsun" },
         { SIMSUN, "\xe5\xae\x8b\xe4\xbd\x93" },
         { SIMSUN, "MSung GB18030" },
         { SIMSUN, "Song ASC" },
         // 新宋体
         { NSIMSUN, "NSimsun" },
         { NSIMSUN, "\xe6\x96\xb0\xe5\xae\x8b\xe4\xbd\x93" },
         { NSIMSUN, "MSung GB18030" },
         { NSIMSUN, "N Song ASC" },
         // 黑体
         { SIMHEI, "Simhei" },
         { SIMHEI, "\xe9\xbb\x91\xe4\xbd\x93" },
         { SIMHEI, "MYingHeiGB18030" },
         { SIMHEI, "MYingHeiB5HK" },
         // 新細明體
         { PMINGLIU, "PMingLiU"},
         { PMINGLIU, "\xe6\x96\xb0\xe7\xb4\xb0\xe6\x98\x8e\xe9\xab\x94" },
         { PMINGLIU, "MSung B5HK"},
         // 細明體
         { MINGLIU, "MingLiU"},
         { MINGLIU, "\xe7\xb4\xb0\xe6\x98\x8e\xe9\xab\x94" },
         { MINGLIU, "MSung B5HK"},
         // 新細明體
         { PMINGLIUHK, "PMingLiU_HKSCS"},
         { PMINGLIUHK, "\xe6\x96\xb0\xe7\xb4\xb0\xe6\x98\x8e\xe9\xab\x94_HKSCS" },
         { PMINGLIUHK, "MSung B5HK"},
         // 細明體
         { MINGLIUHK, "MingLiU_HKSCS"},
         { MINGLIUHK, "\xe7\xb4\xb0\xe6\x98\x8e\xe9\xab\x94_HKSCS" },
         { MINGLIUHK, "MSung B5HK"},
         // Cambria
         { CAMBRIA, "Cambria" },
         { CAMBRIA, "Caladea" },
         // Calibri
         { CALIBRI, "Calibri" },
         { CALIBRI, "Carlito" },
     };
     static const size_t kFontCount =
         sizeof(kFontEquivMap)/sizeof(kFontEquivMap[0]);
     // TODO(jungshik): If this loop turns out to be hot, turn
     // the array to a static (hash)map to speed it up.
     for (size_t i = 0; i < kFontCount; ++i) {
         if (strcasecmp(kFontEquivMap[i].name, fontname) == 0)
             return kFontEquivMap[i].clazz;
     }
     return OTHER;
 }
 // Return true if |font_a| and |font_b| are visually and at the metrics
 // level interchangeable.
 bool IsMetricCompatibleReplacement(const char* font_a, const char* font_b)
 {
     FontEquivClass class_a = GetFontEquivClass(font_a);
     FontEquivClass class_b = GetFontEquivClass(font_b);
     return class_a != OTHER && class_a == class_b;
 }
 // Normally we only return exactly the font asked for. In last-resort
 // cases, the request either doesn't specify a font or is one of the
 // basic font names like "Sans", "Serif" or "Monospace". This function
 // tells you whether a given request is for such a fallback.
 bool IsFallbackFontAllowed(const std::string& family) {
   const char* family_cstr = family.c_str();
   return family.empty() ||
          strcasecmp(family_cstr, "sans") == 0 ||
          strcasecmp(family_cstr, "serif") == 0 ||
          strcasecmp(family_cstr, "monospace") == 0;
 }
 static bool valid_pattern(FcPattern* pattern) {
 #ifdef SK_FONT_CONFIG_ONLY_ALLOW_SCALABLE_FONTS
     FcBool is_scalable;
     if (FcPatternGetBool(pattern, FC_SCALABLE, 0, &is_scalable) != FcResultMatch
         || !is_scalable) {
         return false;
     }
 #endif
     // fontconfig can also return fonts which are unreadable
     const char* c_filename = get_name(pattern, FC_FILE);
     if (!c_filename) {
         return false;
     }
     if (access(c_filename, R_OK) != 0) {
         return false;
     }
     return true;
 }
 // Find matching font from |font_set| for the given font family.
 FcPattern* MatchFont(FcFontSet* font_set,
                      const char* post_config_family,
                      const std::string& family) {
   // Older versions of fontconfig have a bug where they cannot select
   // only scalable fonts so we have to manually filter the results.
   FcPattern* match = NULL;
   for (int i = 0; i < font_set->nfont; ++i) {
     FcPattern* current = font_set->fonts[i];
     if (valid_pattern(current)) {
       match = current;
       break;
     }
   }
   if (match && !IsFallbackFontAllowed(family)) {
     bool acceptable_substitute = false;
     for (int id = 0; id < 255; ++id) {
       const char* post_match_family = get_name(match, FC_FAMILY, id);
       if (!post_match_family)
         break;
       acceptable_substitute =
           (strcasecmp(post_config_family, post_match_family) == 0 ||
            // Workaround for Issue 12530:
            //   requested family: "Bitstream Vera Sans"
            //   post_config_family: "Arial"
            //   post_match_family: "Bitstream Vera Sans"
            // -> We should treat this case as a good match.
            strcasecmp(family.c_str(), post_match_family) == 0) ||
            IsMetricCompatibleReplacement(family.c_str(), post_match_family);
       if (acceptable_substitute)
         break;
     }
     if (!acceptable_substitute)
       return NULL;
   }
   return match;
 }
 // Retrieves |is_bold|, |is_italic| and |font_family| properties from |font|.
 SkTypeface::Style GetFontStyle(FcPattern* font) {
     int resulting_bold;
     if (FcPatternGetInteger(font, FC_WEIGHT, 0, &resulting_bold))
         resulting_bold = FC_WEIGHT_NORMAL;
     int resulting_italic;
     if (FcPatternGetInteger(font, FC_SLANT, 0, &resulting_italic))
         resulting_italic = FC_SLANT_ROMAN;
     // If we ask for an italic font, fontconfig might take a roman font and set
     // the undocumented property FC_MATRIX to a skew matrix. It'll then say
     // that the font is italic or oblique. So, if we see a matrix, we don't
     // believe that it's italic.
     FcValue matrix;
     const bool have_matrix = FcPatternGet(font, FC_MATRIX, 0, &matrix) == 0;
     // If we ask for an italic font, fontconfig might take a roman font and set
     // FC_EMBOLDEN.
     FcValue embolden;
     const bool have_embolden = FcPatternGet(font, FC_EMBOLDEN, 0, &embolden) == 0;
     int styleBits = 0;
     if (resulting_bold > FC_WEIGHT_MEDIUM && !have_embolden) {
         styleBits |= SkTypeface::kBold;
     }
     if (resulting_italic > FC_SLANT_ROMAN && !have_matrix) {
         styleBits |= SkTypeface::kItalic;
     }
     return (SkTypeface::Style)styleBits;
 }
 }  // anonymous namespace
 ///////////////////////////////////////////////////////////////////////////////
 #define kMaxFontFamilyLength    2048
 SkFontConfigInterfaceDirect::SkFontConfigInterfaceDirect() {
     SkAutoMutexAcquire ac(mutex_);
     FcInit();
     SkDEBUGCODE(fontconfiginterface_unittest();)
 }
 SkFontConfigInterfaceDirect::~SkFontConfigInterfaceDirect() {
 }
 bool SkFontConfigInterfaceDirect::matchFamilyName(const char familyName[],
                                                   SkTypeface::Style style,
                                                   FontIdentity* outIdentity,
                                                   SkString* outFamilyName,
                                                   SkTypeface::Style* outStyle) {
     std::string familyStr(familyName ? familyName : "");
     if (familyStr.length() > kMaxFontFamilyLength) {
         return false;
     }
     SkAutoMutexAcquire ac(mutex_);
     FcPattern* pattern = FcPatternCreate();
     if (familyName) {
         FcPatternAddString(pattern, FC_FAMILY, (FcChar8*)familyName);
     }
     FcPatternAddInteger(pattern, FC_WEIGHT,
                         (style & SkTypeface::kBold) ? FC_WEIGHT_BOLD
                                                     : FC_WEIGHT_NORMAL);
     FcPatternAddInteger(pattern, FC_SLANT,
                         (style & SkTypeface::kItalic) ? FC_SLANT_ITALIC
                                                       : FC_SLANT_ROMAN);
     FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
     FcConfigSubstitute(NULL, pattern, FcMatchPattern);
     FcDefaultSubstitute(pattern);
     // Font matching:
     // CSS often specifies a fallback list of families:
     //    font-family: a, b, c, serif;
     // However, fontconfig will always do its best to find *a* font when asked
     // for something so we need a way to tell if the match which it has found is
     // "good enough" for us. Otherwise, we can return NULL which gets piped up
     // and lets WebKit know to try the next CSS family name. However, fontconfig
     // configs allow substitutions (mapping "Arial -> Helvetica" etc) and we
     // wish to support that.
     //
     // Thus, if a specific family is requested we set @family_requested. Then we
     // record two strings: the family name after config processing and the
     // family name after resolving. If the two are equal, it's a good match.
     //
     // So consider the case where a user has mapped Arial to Helvetica in their
     // config.
     //    requested family: "Arial"
     //    post_config_family: "Helvetica"
     //    post_match_family: "Helvetica"
     //      -> good match
     //
     // and for a missing font:
     //    requested family: "Monaco"
     //    post_config_family: "Monaco"
     //    post_match_family: "Times New Roman"
     //      -> BAD match
     //
     // However, we special-case fallback fonts; see IsFallbackFontAllowed().
     const char* post_config_family = get_name(pattern, FC_FAMILY);
     if (!post_config_family) {
         // we can just continue with an empty name, e.g. default font
         post_config_family = "";
     }
     FcResult result;
     FcFontSet* font_set = FcFontSort(0, pattern, 0, 0, &result);
     if (!font_set) {
         FcPatternDestroy(pattern);
         return false;
     }
     FcPattern* match = MatchFont(font_set, post_config_family, familyStr);
     if (!match) {
         FcPatternDestroy(pattern);
         FcFontSetDestroy(font_set);
         return false;
     }
     FcPatternDestroy(pattern);
     // From here out we just extract our results from 'match'
     post_config_family = get_name(match, FC_FAMILY);
     if (!post_config_family) {
         FcFontSetDestroy(font_set);
         return false;
     }
     const char* c_filename = get_name(match, FC_FILE);
     if (!c_filename) {
         FcFontSetDestroy(font_set);
         return false;
     }
     int face_index;
     if (FcPatternGetInteger(match, FC_INDEX, 0, &face_index) != FcResultMatch) {
         FcFontSetDestroy(font_set);
         return false;
     }
     FcFontSetDestroy(font_set);
     if (outIdentity) {
         outIdentity->fTTCIndex = face_index;
         outIdentity->fString.set(c_filename);
     }
     if (outFamilyName) {
         outFamilyName->set(post_config_family);
     }
     if (outStyle) {
         *outStyle = GetFontStyle(match);
     }
     return true;
 }
 SkStream* SkFontConfigInterfaceDirect::openStream(const FontIdentity& identity) {
     return SkStream::NewFromFile(identity.fString.c_str());
 }
 ///////////////////////////////////////////////////////////////////////////////
 static bool find_name(const SkTDArray<const char*>& list, const char* str) {
     int count = list.count();
     for (int i = 0; i < count; ++i) {
         if (!strcmp(list[i], str)) {
             return true;
         }
     }
     return false;
 }
 SkDataTable* SkFontConfigInterfaceDirect::getFamilyNames() {
     SkAutoMutexAcquire ac(mutex_);
     FcPattern* pat = FcPatternCreate();
     SkAutoTCallVProc<FcPattern, FcPatternDestroy> autoDestroyPat(pat);
     if (NULL == pat) {
         return NULL;
     }
     FcObjectSet* os = FcObjectSetBuild(FC_FAMILY, (char *)0);
     SkAutoTCallVProc<FcObjectSet, FcObjectSetDestroy> autoDestroyOs(os);
     if (NULL == os) {
         return NULL;
     }
     FcFontSet* fs = FcFontList(NULL, pat, os);
     SkAutoTCallVProc<FcFontSet, FcFontSetDestroy> autoDestroyFs(fs);
     if (NULL == fs) {
         return NULL;
     }
     SkTDArray<const char*> names;
     SkTDArray<size_t> sizes;
     for (int i = 0; i < fs->nfont; ++i) {
         FcPattern* match = fs->fonts[i];
         const char* famName = get_name(match, FC_FAMILY);
         if (famName && !find_name(names, famName)) {
             *names.append() = famName;
             *sizes.append() = strlen(famName) + 1;
         }
     }
     return SkDataTable::NewCopyArrays((const void*const*)names.begin(),
                                       sizes.begin(), names.count());
 }
 bool SkFontConfigInterfaceDirect::matchFamilySet(const char inFamilyName[],
                                                  SkString* outFamilyName,
                                                  SkTArray<FontIdentity>* ids) {
     SkAutoMutexAcquire ac(mutex_);
 #if 0
     std::string familyStr(familyName ? familyName : "");
     if (familyStr.length() > kMaxFontFamilyLength) {
         return false;
     }
     SkAutoMutexAcquire ac(mutex_);
     FcPattern* pattern = FcPatternCreate();
     if (familyName) {
         FcPatternAddString(pattern, FC_FAMILY, (FcChar8*)familyName);
     }
     FcPatternAddBool(pattern, FC_SCALABLE, FcTrue);
     FcConfigSubstitute(NULL, pattern, FcMatchPattern);
     FcDefaultSubstitute(pattern);
     // Font matching:
     // CSS often specifies a fallback list of families:
     //    font-family: a, b, c, serif;
     // However, fontconfig will always do its best to find *a* font when asked
     // for something so we need a way to tell if the match which it has found is
     // "good enough" for us. Otherwise, we can return NULL which gets piped up
     // and lets WebKit know to try the next CSS family name. However, fontconfig
     // configs allow substitutions (mapping "Arial -> Helvetica" etc) and we
     // wish to support that.
     //
     // Thus, if a specific family is requested we set @family_requested. Then we
     // record two strings: the family name after config processing and the
     // family name after resolving. If the two are equal, it's a good match.
     //
     // So consider the case where a user has mapped Arial to Helvetica in their
     // config.
     //    requested family: "Arial"
     //    post_config_family: "Helvetica"
     //    post_match_family: "Helvetica"
     //      -> good match
     //
     // and for a missing font:
     //    requested family: "Monaco"
     //    post_config_family: "Monaco"
     //    post_match_family: "Times New Roman"
     //      -> BAD match
     //
     // However, we special-case fallback fonts; see IsFallbackFontAllowed().
     const char* post_config_family = get_name(pattern, FC_FAMILY);
     FcResult result;
     FcFontSet* font_set = FcFontSort(0, pattern, 0, 0, &result);
     if (!font_set) {
         FcPatternDestroy(pattern);
         return false;
     }
     FcPattern* match = MatchFont(font_set, post_config_family, familyStr);
     if (!match) {
         FcPatternDestroy(pattern);
         FcFontSetDestroy(font_set);
         return false;
     }
     FcPatternDestroy(pattern);
     // From here out we just extract our results from 'match'
     if (FcPatternGetString(match, FC_FAMILY, 0, &post_config_family) != FcResultMatch) {
         FcFontSetDestroy(font_set);
         return false;
     }
     FcChar8* c_filename;
     if (FcPatternGetString(match, FC_FILE, 0, &c_filename) != FcResultMatch) {
         FcFontSetDestroy(font_set);
         return false;
     }
     int face_index;
     if (FcPatternGetInteger(match, FC_INDEX, 0, &face_index) != FcResultMatch) {
         FcFontSetDestroy(font_set);
         return false;
     }
     FcFontSetDestroy(font_set);
     if (outIdentity) {
         outIdentity->fTTCIndex = face_index;
         outIdentity->fString.set((const char*)c_filename);
     }
     if (outFamilyName) {
         outFamilyName->set((const char*)post_config_family);
     }
     if (outStyle) {
         *outStyle = GetFontStyle(match);
     }
     return true;
 ////////////////////
         int count;
         FcPattern** match = MatchFont(font_set, post_config_family, &count);
         if (!match) {
             FcPatternDestroy(pattern);
             FcFontSetDestroy(font_set);
             return NULL;
         }
         FcPatternDestroy(pattern);
         SkTDArray<FcPattern*> trimmedMatches;
         for (int i = 0; i < count; ++i) {
             const char* justName = find_just_name(get_name(match[i], FC_FILE));
             if (!is_lower(*justName)) {
                 *trimmedMatches.append() = match[i];
             }
         }
         SkFontStyleSet_FC* sset = SkNEW_ARGS(SkFontStyleSet_FC,
                                              (trimmedMatches.begin(),
                                               trimmedMatches.count()));
 #endif
     return false;
 }

The Tor Browser / annotate

gfx/skia/trunk/src/ports/SkFontConfigInterface_direct.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/ports/SkFontConfigInterface_direct.cpp