lmpParser Namespace Reference

Functions
static FontFamily *	find_family (FamilyData *self, const SkString &familyName)

Variables
static const TagHandler	axisHandler
static const TagHandler	fontHandler
static const TagHandler	familyHandler
static const TagHandler	aliasHandler
static const TagHandler	familySetHandler

Function Documentation

find_family()

static FontFamily * lmpParser::find_family ( FamilyData *  self, const SkString &  familyName  )

static

Definition at line 329 of file SkFontMgr_android_parser.cpp.

                                                                             {
    for (int i = 0; i < self->fFamilies.size(); i++) {
        FontFamily* candidate = self->fFamilies[i];
        for (int j = 0; j < candidate->fNames.size(); j++) {
            if (candidate->fNames[j] == familyName) {
                return candidate;
            }
        }
    }
    return nullptr;
}

Variable Documentation

aliasHandler

const TagHandler lmpParser::aliasHandler

static

Definition at line 341 of file SkFontMgr_android_parser.cpp.

                                       {
    /*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.size(); 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*/nullptr,
    /*tag*/nullptr,
    /*chars*/nullptr,
};

axisHandler

const TagHandler lmpParser::axisHandler

static

Definition at line 174 of file SkFontMgr_android_parser.cpp.

                                      {
    /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
        FontFileInfo& file = *self->fCurrentFontInfo;
        SkFourByteTag axisTag = SkSetFourByteTag('\0','\0','\0','\0');
        SkFixed axisStyleValue = 0;
        bool axisTagIsValid = false;
        bool axisStyleValueIsValid = false;
        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) {
                    axisTag = SkSetFourByteTag(value[0], value[1], value[2], value[3]);
                    axisTagIsValid = true;
                    for (int j = 0; j < file.fVariationDesignPosition.size() - 1; ++j) {
                        if (file.fVariationDesignPosition[j].axis == axisTag) {
                            axisTagIsValid = false;
                            SK_FONTCONFIGPARSER_WARNING("'%c%c%c%c' axis specified more than once",
                                                        (char)((axisTag >> 24) & 0xFF),
                                                        (char)((axisTag >> 16) & 0xFF),
                                                        (char)((axisTag >>  8) & 0xFF),
                                                        (char)((axisTag      ) & 0xFF));
                        }
                    }
                } else {
                    SK_FONTCONFIGPARSER_WARNING("'%s' is an invalid axis tag", value);
                }
            } else if (MEMEQ("stylevalue", name, nameLen)) {
                if (parse_fixed<16>(value, &axisStyleValue)) {
                    axisStyleValueIsValid = true;
                } else {
                    SK_FONTCONFIGPARSER_WARNING("'%s' is an invalid axis stylevalue", value);
                }
            }
        }
        if (axisTagIsValid && axisStyleValueIsValid) {
            auto& coordinate = file.fVariationDesignPosition.push_back();
            coordinate.axis = axisTag;
            coordinate.value = SkFixedToScalar(axisStyleValue);
        }
    },
    /*end*/nullptr,
    /*tag*/nullptr,
    /*chars*/nullptr,
};

familyHandler

const TagHandler lmpParser::familyHandler

static

Definition at line 288 of file SkFontMgr_android_parser.cpp.

                                        {
    /*start*/[](FamilyData* self, const char* tag, const char** attributes) {
        // 'name' (string) [optional]
        // 'lang' (space separated 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)) {
                parse_space_separated_languages(value, valueLen, family->fLanguages);
            } 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.release();
    },
    /*tag*/[](FamilyData* self, const char* tag, const char** attributes) -> const TagHandler* {
        size_t len = strlen(tag);
        if (MEMEQ("font", tag, len)) {
            return &fontHandler;
        }
        return nullptr;
    },
    /*chars*/nullptr,
};

familySetHandler

const TagHandler lmpParser::familySetHandler

static

Initial value:

= {
    [](FamilyData* self, const char* tag, const char** attributes) { },
    nullptr,
    [](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 nullptr;
    },
    nullptr,
}

Definition at line 395 of file SkFontMgr_android_parser.cpp.

                                           {
    /*start*/[](FamilyData* self, const char* tag, const char** attributes) { },
    /*end*/nullptr,
    /*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 nullptr;
    },
    /*chars*/nullptr,
};

fontHandler

const TagHandler lmpParser::fontHandler

static

Definition at line 222 of file SkFontMgr_android_parser.cpp.

                                      {
    /*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;
        SkString fallbackFor;
        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);
                }
            } else if (MEMEQ("fallbackFor", name, nameLen)) {
                /** fallbackFor specifies a family fallback and should have been on family. */
                fallbackFor = value;
            }
        }
        if (!fallbackFor.isEmpty()) {
            std::unique_ptr<FontFamily>* fallbackFamily =
                    self->fCurrentFamily->fallbackFamilies.find(fallbackFor);
            if (!fallbackFamily) {
                std::unique_ptr<FontFamily> newFallbackFamily(
                        new FontFamily(self->fCurrentFamily->fBasePath, true));
                fallbackFamily = self->fCurrentFamily->fallbackFamilies.set(
                        fallbackFor, std::move(newFallbackFamily));
                (*fallbackFamily)->fLanguages = self->fCurrentFamily->fLanguages;
                (*fallbackFamily)->fVariant = self->fCurrentFamily->fVariant;
                (*fallbackFamily)->fOrder = self->fCurrentFamily->fOrder;
                (*fallbackFamily)->fFallbackFor = fallbackFor;
            }
            self->fCurrentFontInfo = &(*fallbackFamily)->fFonts.emplace_back(file);
            self->fCurrentFamily->fFonts.pop_back();
        }
    },
    /*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 nullptr;
    },
    /*chars*/[](void* data, const char* s, int len) {
        FamilyData* self = static_cast<FamilyData*>(data);
        self->fCurrentFontInfo->fFileName.append(s, len);
    }
};