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Unified Diff: src/ports/SkFontConfigParser_android.cpp

Issue 1200103008: Rename SkFontConfigParser_android SkFontMgr_android_parser. (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Update test name and exclusion. Created 5 years, 6 months ago
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Index: src/ports/SkFontConfigParser_android.cpp
diff --git a/src/ports/SkFontConfigParser_android.cpp b/src/ports/SkFontConfigParser_android.cpp
deleted file mode 100644
index 3825a7290397adc82ab63caa21899a50a1d34d80..0000000000000000000000000000000000000000
--- a/src/ports/SkFontConfigParser_android.cpp
+++ /dev/null
@@ -1,797 +0,0 @@
-/*
- * Copyright 2011 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkFontConfigParser_android.h"
-#include "SkFontMgr_android.h"
-#include "SkStream.h"
-#include "SkTDArray.h"
-#include "SkTSearch.h"
-#include "SkTypeface.h"
-
-#include <expat.h>
-#include <dirent.h>
-
-#include <stdlib.h>
-
-#define LMP_SYSTEM_FONTS_FILE "/system/etc/fonts.xml"
-#define OLD_SYSTEM_FONTS_FILE "/system/etc/system_fonts.xml"
-#define FALLBACK_FONTS_FILE "/system/etc/fallback_fonts.xml"
-#define VENDOR_FONTS_FILE "/vendor/etc/fallback_fonts.xml"
-
-#define LOCALE_FALLBACK_FONTS_SYSTEM_DIR "/system/etc"
-#define LOCALE_FALLBACK_FONTS_VENDOR_DIR "/vendor/etc"
-#define LOCALE_FALLBACK_FONTS_PREFIX "fallback_fonts-"
-#define LOCALE_FALLBACK_FONTS_SUFFIX ".xml"
-
-#ifndef SK_FONT_FILE_PREFIX
-# define SK_FONT_FILE_PREFIX "/fonts/"
-#endif
-
-/**
- * This file contains TWO 'familyset' handlers:
- * One for JB and earlier which works with
- * /system/etc/system_fonts.xml
- * /system/etc/fallback_fonts.xml
- * /vendor/etc/fallback_fonts.xml
- * /system/etc/fallback_fonts-XX.xml
- * /vendor/etc/fallback_fonts-XX.xml
- * and the other for LMP and later which works with
- * /system/etc/fonts.xml
- *
- * If the 'familyset' 'version' attribute is 21 or higher the LMP parser is used, otherwise the JB.
- */
-
-struct FamilyData;
-
-struct TagHandler {
- /** Called at the start tag.
- * Called immediately after the parent tag retuns this handler from a call to 'tag'.
- * Allows setting up for handling the tag content and processing attributes.
- * If NULL, will not be called.
- */
- void (*start)(FamilyData* data, const char* tag, const char** attributes);
-
- /** Called at the end tag.
- * Allows post-processing of any accumulated information.
- * This will be the last call made in relation to the current tag.
- * If NULL, will not be called.
- */
- void (*end)(FamilyData* data, const char* tag);
-
- /** Called when a nested tag is encountered.
- * This is responsible for determining how to handle the tag.
- * If the tag is not recognized, return NULL to skip the tag.
- * If NULL, all nested tags will be skipped.
- */
- const TagHandler* (*tag)(FamilyData* data, const char* tag, const char** attributes);
-
- /** The character handler for this tag.
- * This is only active for character data contained directly in this tag (not sub-tags).
- * The first parameter will be castable to a FamilyData*.
- * If NULL, any character data in this tag will be ignored.
- */
- XML_CharacterDataHandler chars;
-};
-
-/** Represents the current parsing state. */
-struct FamilyData {
- FamilyData(XML_Parser parser, SkTDArray<FontFamily*>& families,
- const SkString& basePath, bool isFallback, const char* filename,
- const TagHandler* topLevelHandler)
- : fParser(parser)
- , fFamilies(families)
- , fCurrentFamily(NULL)
- , fCurrentFontInfo(NULL)
- , fVersion(0)
- , fBasePath(basePath)
- , fIsFallback(isFallback)
- , fFilename(filename)
- , fDepth(1)
- , fSkip(0)
- , fHandler(&topLevelHandler, 1)
- { };
-
- XML_Parser fParser; // The expat parser doing the work, owned by caller
- SkTDArray<FontFamily*>& fFamilies; // The array to append families, owned by caller
- SkAutoTDelete<FontFamily> fCurrentFamily; // The family being created, owned by this
- FontFileInfo* fCurrentFontInfo; // The fontInfo being created, owned by fCurrentFamily
- int fVersion; // The version of the file parsed.
- const SkString& fBasePath; // The current base path.
- const bool fIsFallback; // Indicates the file being parsed is a fallback file
- const char* fFilename; // The name of the file currently being parsed.
-
- int fDepth; // The current element depth of the parse.
- int fSkip; // The depth to stop skipping, 0 if not skipping.
- SkTDArray<const TagHandler*> fHandler; // The stack of current tag handlers.
-};
-
-static bool memeq(const char* s1, const char* s2, size_t n1, size_t n2) {
- return n1 == n2 && 0 == memcmp(s1, s2, n1);
-}
-#define MEMEQ(c, s, n) memeq(c, s, sizeof(c) - 1, n)
-
-#define ATTS_NON_NULL(a, i) (a[i] != NULL && a[i+1] != NULL)
-
-#define SK_FONTCONFIGPARSER_PREFIX "[SkFontConfigParser] "
-
-#define SK_FONTCONFIGPARSER_WARNING(message, ...) SkDebugf( \
- SK_FONTCONFIGPARSER_PREFIX "%s:%d:%d: warning: " message "\n", \
- self->fFilename, \
- XML_GetCurrentLineNumber(self->fParser), \
- XML_GetCurrentColumnNumber(self->fParser), \
- ##__VA_ARGS__);
-
-static bool is_whitespace(char c) {
- return c == ' ' || c == '\n'|| c == '\r' || c == '\t';
-}
-
-static void trim_string(SkString* s) {
- char* str = s->writable_str();
- const char* start = str; // start is inclusive
- const char* end = start + s->size(); // end is exclusive
- while (is_whitespace(*start)) { ++start; }
- if (start != end) {
- --end; // make end inclusive
- while (is_whitespace(*end)) { --end; }
- ++end; // make end exclusive
- }
- size_t len = end - start;
- memmove(str, start, len);
- s->resize(len);
-}
-
-namespace lmpParser {
-
-static const TagHandler axisHandler = {
- /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
- FontFileInfo& file = *self->fCurrentFontInfo;
- FontFileInfo::Axis& axis = file.fAxes.push_back();
- for (size_t i = 0; ATTS_NON_NULL(attributes, i); i += 2) {
- const char* name = attributes[i];
- const char* value = attributes[i+1];
- size_t nameLen = strlen(name);
- if (MEMEQ("tag", name, nameLen)) {
- size_t valueLen = strlen(value);
- if (valueLen == 4) {
- SkFourByteTag tag = SkSetFourByteTag(value[0], value[1], value[2], value[3]);
- for (int j = 0; j < file.fAxes.count() - 1; ++j) {
- if (file.fAxes[j].fTag == tag) {
- SK_FONTCONFIGPARSER_WARNING("'%c%c%c%c' axis specified more than once",
- (tag >> 24) & 0xFF,
- (tag >> 16) & 0xFF,
- (tag >> 8) & 0xFF,
- (tag ) & 0xFF);
- }
- }
- axis.fTag = SkSetFourByteTag(value[0], value[1], value[2], value[3]);
- } else {
- SK_FONTCONFIGPARSER_WARNING("'%s' is an invalid axis tag", value);
- }
- } else if (MEMEQ("stylevalue", name, nameLen)) {
- if (!parse_fixed<16>(value, &axis.fValue)) {
- SK_FONTCONFIGPARSER_WARNING("'%s' is an invalid axis stylevalue", value);
- }
- }
- }
- },
- /*end*/NULL,
- /*tag*/NULL,
- /*chars*/NULL,
-};
-
-static const TagHandler fontHandler = {
- /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
- // 'weight' (non-negative integer) [default 0]
- // 'style' ("normal", "italic") [default "auto"]
- // 'index' (non-negative integer) [default 0]
- // The character data should be a filename.
- FontFileInfo& file = self->fCurrentFamily->fFonts.push_back();
- self->fCurrentFontInfo = &file;
- for (size_t i = 0; ATTS_NON_NULL(attributes, i); i += 2) {
- const char* name = attributes[i];
- const char* value = attributes[i+1];
- size_t nameLen = strlen(name);
- if (MEMEQ("weight", name, nameLen)) {
- if (!parse_non_negative_integer(value, &file.fWeight)) {
- SK_FONTCONFIGPARSER_WARNING("'%s' is an invalid weight", value);
- }
- } else if (MEMEQ("style", name, nameLen)) {
- size_t valueLen = strlen(value);
- if (MEMEQ("normal", value, valueLen)) {
- file.fStyle = FontFileInfo::Style::kNormal;
- } else if (MEMEQ("italic", value, valueLen)) {
- file.fStyle = FontFileInfo::Style::kItalic;
- }
- } else if (MEMEQ("index", name, nameLen)) {
- if (!parse_non_negative_integer(value, &file.fIndex)) {
- SK_FONTCONFIGPARSER_WARNING("'%s' is an invalid index", value);
- }
- }
- }
- },
- /*end*/[](FamilyData* self, const char* tag) {
- trim_string(&self->fCurrentFontInfo->fFileName);
- },
- /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
- size_t len = strlen(tag);
- if (MEMEQ("axis", tag, len)) {
- return &axisHandler;
- }
- return NULL;
- },
- /*chars*/[](void* data, const char* s, int len) {
- FamilyData* self = static_cast<FamilyData*>(data);
- self->fCurrentFontInfo->fFileName.append(s, len);
- }
-};
-
-static const TagHandler familyHandler = {
- /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
- // 'name' (string) [optional]
- // 'lang' (string) [default ""]
- // 'variant' ("elegant", "compact") [default "default"]
- // If there is no name, this is a fallback only font.
- FontFamily* family = new FontFamily(self->fBasePath, true);
- self->fCurrentFamily.reset(family);
- for (size_t i = 0; ATTS_NON_NULL(attributes, i); i += 2) {
- const char* name = attributes[i];
- const char* value = attributes[i+1];
- size_t nameLen = strlen(name);
- size_t valueLen = strlen(value);
- if (MEMEQ("name", name, nameLen)) {
- SkAutoAsciiToLC tolc(value);
- family->fNames.push_back().set(tolc.lc());
- family->fIsFallbackFont = false;
- } else if (MEMEQ("lang", name, nameLen)) {
- family->fLanguage = SkLanguage(value, valueLen);
- } else if (MEMEQ("variant", name, nameLen)) {
- if (MEMEQ("elegant", value, valueLen)) {
- family->fVariant = kElegant_FontVariant;
- } else if (MEMEQ("compact", value, valueLen)) {
- family->fVariant = kCompact_FontVariant;
- }
- }
- }
- },
- /*end*/[](FamilyData* self, const char* tag) {
- *self->fFamilies.append() = self->fCurrentFamily.detach();
- },
- /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
- size_t len = strlen(tag);
- if (MEMEQ("font", tag, len)) {
- return &fontHandler;
- }
- return NULL;
- },
- /*chars*/NULL,
-};
-
-static FontFamily* find_family(FamilyData* self, const SkString& familyName) {
- for (int i = 0; i < self->fFamilies.count(); i++) {
- FontFamily* candidate = self->fFamilies[i];
- for (int j = 0; j < candidate->fNames.count(); j++) {
- if (candidate->fNames[j] == familyName) {
- return candidate;
- }
- }
- }
- return NULL;
-}
-
-static const TagHandler aliasHandler = {
- /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
- // 'name' (string) introduces a new family name.
- // 'to' (string) specifies which (previous) family to alias
- // 'weight' (non-negative integer) [optional]
- // If it *does not* have a weight, 'name' is an alias for the entire 'to' family.
- // If it *does* have a weight, 'name' is a new family consisting of
- // the font(s) with 'weight' from the 'to' family.
-
- SkString aliasName;
- SkString to;
- int weight = 0;
- for (size_t i = 0; ATTS_NON_NULL(attributes, i); i += 2) {
- const char* name = attributes[i];
- const char* value = attributes[i+1];
- size_t nameLen = strlen(name);
- if (MEMEQ("name", name, nameLen)) {
- SkAutoAsciiToLC tolc(value);
- aliasName.set(tolc.lc());
- } else if (MEMEQ("to", name, nameLen)) {
- to.set(value);
- } else if (MEMEQ("weight", name, nameLen)) {
- if (!parse_non_negative_integer(value, &weight)) {
- SK_FONTCONFIGPARSER_WARNING("'%s' is an invalid weight", value);
- }
- }
- }
-
- // Assumes that the named family is already declared
- FontFamily* targetFamily = find_family(self, to);
- if (!targetFamily) {
- SK_FONTCONFIGPARSER_WARNING("'%s' alias target not found", to.c_str());
- return;
- }
-
- if (weight) {
- FontFamily* family = new FontFamily(targetFamily->fBasePath, self->fIsFallback);
- family->fNames.push_back().set(aliasName);
-
- for (int i = 0; i < targetFamily->fFonts.count(); i++) {
- if (targetFamily->fFonts[i].fWeight == weight) {
- family->fFonts.push_back(targetFamily->fFonts[i]);
- }
- }
- *self->fFamilies.append() = family;
- } else {
- targetFamily->fNames.push_back().set(aliasName);
- }
- },
- /*end*/NULL,
- /*tag*/NULL,
- /*chars*/NULL,
-};
-
-static const TagHandler familySetHandler = {
- /*start*/[](FamilyData* self, const char* tag, const char** attributes) { },
- /*end*/NULL,
- /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
- size_t len = strlen(tag);
- if (MEMEQ("family", tag, len)) {
- return &familyHandler;
- } else if (MEMEQ("alias", tag, len)) {
- return &aliasHandler;
- }
- return NULL;
- },
- /*chars*/NULL,
-};
-
-} // lmpParser
-
-namespace jbParser {
-
-static const TagHandler fileHandler = {
- /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
- // 'variant' ("elegant", "compact") [default "default"]
- // 'lang' (string) [default ""]
- // 'index' (non-negative integer) [default 0]
- // The character data should be a filename.
- FontFamily& currentFamily = *self->fCurrentFamily.get();
- FontFileInfo& newFileInfo = currentFamily.fFonts.push_back();
- if (attributes) {
- for (size_t i = 0; ATTS_NON_NULL(attributes, i); i += 2) {
- const char* name = attributes[i];
- const char* value = attributes[i+1];
- size_t nameLen = strlen(name);
- size_t valueLen = strlen(value);
- if (MEMEQ("variant", name, nameLen)) {
- const FontVariant prevVariant = currentFamily.fVariant;
- if (MEMEQ("elegant", value, valueLen)) {
- currentFamily.fVariant = kElegant_FontVariant;
- } else if (MEMEQ("compact", value, valueLen)) {
- currentFamily.fVariant = kCompact_FontVariant;
- }
- if (currentFamily.fFonts.count() > 1 && currentFamily.fVariant != prevVariant) {
- SK_FONTCONFIGPARSER_WARNING("'%s' unexpected variant found\n"
- "Note: Every font file within a family must have identical variants.",
- value);
- }
-
- } else if (MEMEQ("lang", name, nameLen)) {
- SkLanguage prevLang = currentFamily.fLanguage;
- currentFamily.fLanguage = SkLanguage(value, valueLen);
- if (currentFamily.fFonts.count() > 1 && currentFamily.fLanguage != prevLang) {
- SK_FONTCONFIGPARSER_WARNING("'%s' unexpected language found\n"
- "Note: Every font file within a family must have identical languages.",
- value);
- }
-
- } else if (MEMEQ("index", name, nameLen)) {
- if (!parse_non_negative_integer(value, &newFileInfo.fIndex)) {
- SK_FONTCONFIGPARSER_WARNING("'%s' is an invalid index", value);
- }
- }
- }
- }
- self->fCurrentFontInfo = &newFileInfo;
- },
- /*end*/NULL,
- /*tag*/NULL,
- /*chars*/[](void* data, const char* s, int len) {
- FamilyData* self = static_cast<FamilyData*>(data);
- self->fCurrentFontInfo->fFileName.append(s, len);
- }
-};
-
-static const TagHandler fileSetHandler = {
- /*start*/NULL,
- /*end*/NULL,
- /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
- size_t len = strlen(tag);
- if (MEMEQ("file", tag, len)) {
- return &fileHandler;
- }
- return NULL;
- },
- /*chars*/NULL,
-};
-
-static const TagHandler nameHandler = {
- /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
- // The character data should be a name for the font.
- self->fCurrentFamily->fNames.push_back();
- },
- /*end*/NULL,
- /*tag*/NULL,
- /*chars*/[](void* data, const char* s, int len) {
- FamilyData* self = static_cast<FamilyData*>(data);
- SkAutoAsciiToLC tolc(s, len);
- self->fCurrentFamily->fNames.back().append(tolc.lc(), len);
- }
-};
-
-static const TagHandler nameSetHandler = {
- /*start*/NULL,
- /*end*/NULL,
- /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
- size_t len = strlen(tag);
- if (MEMEQ("name", tag, len)) {
- return &nameHandler;
- }
- return NULL;
- },
- /*chars*/NULL,
-};
-
-static const TagHandler familyHandler = {
- /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
- self->fCurrentFamily.reset(new FontFamily(self->fBasePath, self->fIsFallback));
- // 'order' (non-negative integer) [default -1]
- for (size_t i = 0; ATTS_NON_NULL(attributes, i); i += 2) {
- const char* value = attributes[i+1];
- parse_non_negative_integer(value, &self->fCurrentFamily->fOrder);
- }
- },
- /*end*/[](FamilyData* self, const char* tag) {
- *self->fFamilies.append() = self->fCurrentFamily.detach();
- },
- /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
- size_t len = strlen(tag);
- if (MEMEQ("nameset", tag, len)) {
- return &nameSetHandler;
- } else if (MEMEQ("fileset", tag, len)) {
- return &fileSetHandler;
- }
- return NULL;
- },
- /*chars*/NULL,
-};
-
-static const TagHandler familySetHandler = {
- /*start*/NULL,
- /*end*/NULL,
- /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
- size_t len = strlen(tag);
- if (MEMEQ("family", tag, len)) {
- return &familyHandler;
- }
- return NULL;
- },
- /*chars*/NULL,
-};
-
-} // namespace jbParser
-
-static const TagHandler topLevelHandler = {
- /*start*/NULL,
- /*end*/NULL,
- /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
- size_t len = strlen(tag);
- if (MEMEQ("familyset", tag, len)) {
- // 'version' (non-negative integer) [default 0]
- for (size_t i = 0; ATTS_NON_NULL(attributes, i); i += 2) {
- const char* name = attributes[i];
- size_t nameLen = strlen(name);
- if (MEMEQ("version", name, nameLen)) {
- const char* value = attributes[i+1];
- if (parse_non_negative_integer(value, &self->fVersion)) {
- if (self->fVersion >= 21) {
- return &lmpParser::familySetHandler;
- }
- }
- }
- }
- return &jbParser::familySetHandler;
- }
- return NULL;
- },
- /*chars*/NULL,
-};
-
-static void XMLCALL start_element_handler(void *data, const char *tag, const char **attributes) {
- FamilyData* self = static_cast<FamilyData*>(data);
-
- if (!self->fSkip) {
- const TagHandler* parent = self->fHandler.top();
- const TagHandler* child = parent->tag ? parent->tag(self, tag, attributes) : NULL;
- if (child) {
- if (child->start) {
- child->start(self, tag, attributes);
- }
- self->fHandler.push(child);
- XML_SetCharacterDataHandler(self->fParser, child->chars);
- } else {
- SK_FONTCONFIGPARSER_WARNING("'%s' tag not recognized, skipping", tag);
- XML_SetCharacterDataHandler(self->fParser, NULL);
- self->fSkip = self->fDepth;
- }
- }
-
- ++self->fDepth;
-}
-
-static void XMLCALL end_element_handler(void* data, const char* tag) {
- FamilyData* self = static_cast<FamilyData*>(data);
- --self->fDepth;
-
- if (!self->fSkip) {
- const TagHandler* child = self->fHandler.top();
- if (child->end) {
- child->end(self, tag);
- }
- self->fHandler.pop();
- const TagHandler* parent = self->fHandler.top();
- XML_SetCharacterDataHandler(self->fParser, parent->chars);
- }
-
- if (self->fSkip == self->fDepth) {
- self->fSkip = 0;
- const TagHandler* parent = self->fHandler.top();
- XML_SetCharacterDataHandler(self->fParser, parent->chars);
- }
-}
-
-static void XMLCALL xml_entity_decl_handler(void *data,
- const XML_Char *entityName,
- int is_parameter_entity,
- const XML_Char *value,
- int value_length,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId,
- const XML_Char *notationName)
-{
- FamilyData* self = static_cast<FamilyData*>(data);
- SK_FONTCONFIGPARSER_WARNING("'%s' entity declaration found, stopping processing", entityName);
- XML_StopParser(self->fParser, XML_FALSE);
-}
-
-static const XML_Memory_Handling_Suite sk_XML_alloc = {
- sk_malloc_throw,
- sk_realloc_throw,
- sk_free
-};
-
-template<typename T> struct remove_ptr {typedef T type;};
-template<typename T> struct remove_ptr<T*> {typedef T type;};
-
-/**
- * This function parses the given filename and stores the results in the given
- * families array. Returns the version of the file, negative if the file does not exist.
- */
-static int parse_config_file(const char* filename, SkTDArray<FontFamily*>& families,
- const SkString& basePath, bool isFallback)
-{
- SkFILEStream file(filename);
-
- // Some of the files we attempt to parse (in particular, /vendor/etc/fallback_fonts.xml)
- // are optional - failure here is okay because one of these optional files may not exist.
- if (!file.isValid()) {
- SkDebugf(SK_FONTCONFIGPARSER_PREFIX "'%s' could not be opened\n", filename);
- return -1;
- }
-
- SkAutoTCallVProc<remove_ptr<XML_Parser>::type, XML_ParserFree> parser(
- XML_ParserCreate_MM(NULL, &sk_XML_alloc, NULL));
- if (!parser) {
- SkDebugf(SK_FONTCONFIGPARSER_PREFIX "could not create XML parser\n");
- return -1;
- }
-
- FamilyData self(parser, families, basePath, isFallback, filename, &topLevelHandler);
- XML_SetUserData(parser, &self);
-
- // Disable entity processing, to inhibit internal entity expansion. See expat CVE-2013-0340
- XML_SetEntityDeclHandler(parser, xml_entity_decl_handler);
-
- // Start parsing oldschool; switch these in flight if we detect a newer version of the file.
- XML_SetElementHandler(parser, start_element_handler, end_element_handler);
-
- // One would assume it would be faster to have a buffer on the stack and call XML_Parse.
- // But XML_Parse will call XML_GetBuffer anyway and memmove the passed buffer into it.
- // (Unless XML_CONTEXT_BYTES is undefined, but all users define it.)
- // In debug, buffer a small odd number of bytes to detect slicing in XML_CharacterDataHandler.
- static const int bufferSize = 512 SkDEBUGCODE( - 507);
- bool done = false;
- while (!done) {
- void* buffer = XML_GetBuffer(parser, bufferSize);
- if (!buffer) {
- SkDebugf(SK_FONTCONFIGPARSER_PREFIX "could not buffer enough to continue\n");
- return -1;
- }
- size_t len = file.read(buffer, bufferSize);
- done = file.isAtEnd();
- XML_Status status = XML_ParseBuffer(parser, len, done);
- if (XML_STATUS_ERROR == status) {
- XML_Error error = XML_GetErrorCode(parser);
- int line = XML_GetCurrentLineNumber(parser);
- int column = XML_GetCurrentColumnNumber(parser);
- const XML_LChar* errorString = XML_ErrorString(error);
- SkDebugf(SK_FONTCONFIGPARSER_PREFIX "%s:%d:%d error %d: %s.\n",
- filename, line, column, error, errorString);
- return -1;
- }
- }
- return self.fVersion;
-}
-
-/** Returns the version of the system font file actually found, negative if none. */
-static int append_system_font_families(SkTDArray<FontFamily*>& fontFamilies,
- const SkString& basePath)
-{
- int initialCount = fontFamilies.count();
- int version = parse_config_file(LMP_SYSTEM_FONTS_FILE, fontFamilies, basePath, false);
- if (version < 0 || fontFamilies.count() == initialCount) {
- version = parse_config_file(OLD_SYSTEM_FONTS_FILE, fontFamilies, basePath, false);
- }
- return version;
-}
-
-/**
- * In some versions of Android prior to Android 4.2 (JellyBean MR1 at API
- * Level 17) the fallback fonts for certain locales were encoded in their own
- * XML files with a suffix that identified the locale. We search the provided
- * directory for those files,add all of their entries to the fallback chain, and
- * include the locale as part of each entry.
- */
-static void append_fallback_font_families_for_locale(SkTDArray<FontFamily*>& fallbackFonts,
- const char* dir,
- const SkString& basePath)
-{
-#if defined(SK_BUILD_FOR_ANDROID_FRAMEWORK)
- // The framework is beyond Android 4.2 and can therefore skip this function
- return;
-#endif
-
- SkAutoTCallIProc<DIR, closedir> fontDirectory(opendir(dir));
- if (NULL == fontDirectory) {
- return;
- }
-
- for (struct dirent* dirEntry; (dirEntry = readdir(fontDirectory));) {
- // The size of the prefix and suffix.
- static const size_t fixedLen = sizeof(LOCALE_FALLBACK_FONTS_PREFIX) - 1
- + sizeof(LOCALE_FALLBACK_FONTS_SUFFIX) - 1;
-
- // The size of the prefix, suffix, and a minimum valid language code
- static const size_t minSize = fixedLen + 2;
-
- SkString fileName(dirEntry->d_name);
- if (fileName.size() < minSize ||
- !fileName.startsWith(LOCALE_FALLBACK_FONTS_PREFIX) ||
- !fileName.endsWith(LOCALE_FALLBACK_FONTS_SUFFIX))
- {
- continue;
- }
-
- SkString locale(fileName.c_str() + sizeof(LOCALE_FALLBACK_FONTS_PREFIX) - 1,
- fileName.size() - fixedLen);
-
- SkString absoluteFilename;
- absoluteFilename.printf("%s/%s", dir, fileName.c_str());
-
- SkTDArray<FontFamily*> langSpecificFonts;
- parse_config_file(absoluteFilename.c_str(), langSpecificFonts, basePath, true);
-
- for (int i = 0; i < langSpecificFonts.count(); ++i) {
- FontFamily* family = langSpecificFonts[i];
- family->fLanguage = SkLanguage(locale);
- *fallbackFonts.append() = family;
- }
- }
-}
-
-static void append_system_fallback_font_families(SkTDArray<FontFamily*>& fallbackFonts,
- const SkString& basePath)
-{
- parse_config_file(FALLBACK_FONTS_FILE, fallbackFonts, basePath, true);
- append_fallback_font_families_for_locale(fallbackFonts,
- LOCALE_FALLBACK_FONTS_SYSTEM_DIR,
- basePath);
-}
-
-static void mixin_vendor_fallback_font_families(SkTDArray<FontFamily*>& fallbackFonts,
- const SkString& basePath)
-{
- SkTDArray<FontFamily*> vendorFonts;
- parse_config_file(VENDOR_FONTS_FILE, vendorFonts, basePath, true);
- append_fallback_font_families_for_locale(vendorFonts,
- LOCALE_FALLBACK_FONTS_VENDOR_DIR,
- basePath);
-
- // This loop inserts the vendor fallback fonts in the correct order in the
- // overall fallbacks list.
- int currentOrder = -1;
- for (int i = 0; i < vendorFonts.count(); ++i) {
- FontFamily* family = vendorFonts[i];
- int order = family->fOrder;
- if (order < 0) {
- if (currentOrder < 0) {
- // Default case - just add it to the end of the fallback list
- *fallbackFonts.append() = family;
- } else {
- // no order specified on this font, but we're incrementing the order
- // based on an earlier order insertion request
- *fallbackFonts.insert(currentOrder++) = family;
- }
- } else {
- // Add the font into the fallback list in the specified order. Set
- // currentOrder for correct placement of other fonts in the vendor list.
- *fallbackFonts.insert(order) = family;
- currentOrder = order + 1;
- }
- }
-}
-
-void SkFontConfigParser::GetSystemFontFamilies(SkTDArray<FontFamily*>& fontFamilies) {
- // Version 21 of the system font configuration does not need any fallback configuration files.
- SkString basePath(getenv("ANDROID_ROOT"));
- basePath.append(SK_FONT_FILE_PREFIX, sizeof(SK_FONT_FILE_PREFIX) - 1);
-
- if (append_system_font_families(fontFamilies, basePath) >= 21) {
- return;
- }
-
- // Append all the fallback fonts to system fonts
- SkTDArray<FontFamily*> fallbackFonts;
- append_system_fallback_font_families(fallbackFonts, basePath);
- mixin_vendor_fallback_font_families(fallbackFonts, basePath);
- fontFamilies.append(fallbackFonts.count(), fallbackFonts.begin());
-}
-
-void SkFontConfigParser::GetCustomFontFamilies(SkTDArray<FontFamily*>& fontFamilies,
- const SkString& basePath,
- const char* fontsXml,
- const char* fallbackFontsXml,
- const char* langFallbackFontsDir)
-{
- if (fontsXml) {
- parse_config_file(fontsXml, fontFamilies, basePath, false);
- }
- if (fallbackFontsXml) {
- parse_config_file(fallbackFontsXml, fontFamilies, basePath, true);
- }
- if (langFallbackFontsDir) {
- append_fallback_font_families_for_locale(fontFamilies,
- langFallbackFontsDir,
- basePath);
- }
-}
-
-SkLanguage SkLanguage::getParent() const {
- SkASSERT(!fTag.isEmpty());
- const char* tag = fTag.c_str();
-
- // strip off the rightmost "-.*"
- const char* parentTagEnd = strrchr(tag, '-');
- if (parentTagEnd == NULL) {
- return SkLanguage();
- }
- size_t parentTagLen = parentTagEnd - tag;
- return SkLanguage(tag, parentTagLen);
-}
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