Rename SkFontConfigParser_android SkFontMgr_android_parser.

src/ports/SkFontConfigParser_android.h

-/*
- * 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.
- */
-
-#ifndef SKFONTCONFIGPARSER_ANDROID_H_
-#define SKFONTCONFIGPARSER_ANDROID_H_
-
-#include "SkFontMgr_android.h"
-#include "SkString.h"
-#include "SkTDArray.h"
-
-#include <climits>
-#include <limits>
-
-/** \class SkLanguage
-
-    The SkLanguage class represents a human written language, and is used by
-    text draw operations to determine which glyph to draw when drawing
-    characters with variants (ie Han-derived characters).
-*/
-class SkLanguage {
-public:
-    SkLanguage() { }
-    SkLanguage(const SkString& tag) : fTag(tag) { }
-    SkLanguage(const char* tag) : fTag(tag) { }
-    SkLanguage(const char* tag, size_t len) : fTag(tag, len) { }
-    SkLanguage(const SkLanguage& b) : fTag(b.fTag) { }
-
-    /** Gets a BCP 47 language identifier for this SkLanguage.
-        @return a BCP 47 language identifier representing this language
-    */
-    const SkString& getTag() const { return fTag; }
-
-    /** Performs BCP 47 fallback to return an SkLanguage one step more general.
-        @return an SkLanguage one step more general
-    */
-    SkLanguage getParent() const;
-
-    bool operator==(const SkLanguage& b) const {
-        return fTag == b.fTag;
-    }
-    bool operator!=(const SkLanguage& b) const {
-        return fTag != b.fTag;
-    }
-    SkLanguage& operator=(const SkLanguage& b) {
-        fTag = b.fTag;
-        return *this;
-    }
-
-private:
-    //! BCP 47 language identifier
-    SkString fTag;
-};
-
-enum FontVariants {
-   kDefault_FontVariant = 0x01,
-   kCompact_FontVariant = 0x02,
-   kElegant_FontVariant = 0x04,
-   kLast_FontVariant = kElegant_FontVariant,
-};
-typedef uint32_t FontVariant;
-
-// Must remain trivially movable (can be memmoved).
-struct FontFileInfo {
-    FontFileInfo() : fIndex(0), fWeight(0), fStyle(Style::kAuto) { }
-
-    SkString fFileName;
-    int fIndex;
-    int fWeight;
-    enum class Style { kAuto, kNormal, kItalic } fStyle;
-    struct Axis {
-        Axis() : fTag(SkSetFourByteTag('\0','\0','\0','\0')), fValue(0) { }
-        SkFourByteTag fTag;
-        SkFixed fValue;
-    };
-    SkTArray<Axis, true> fAxes;
-};
-
-/**
- * A font family provides one or more names for a collection of fonts, each of
- * which has a different style (normal, italic) or weight (thin, light, bold,
- * etc).
- * Some fonts may occur in compact variants for use in the user interface.
- * Android distinguishes "fallback" fonts to support non-ASCII character sets.
- */
-struct FontFamily {
-    FontFamily(const SkString& basePath, bool isFallbackFont)
-        : fVariant(kDefault_FontVariant)
-        , fOrder(-1)
-        , fIsFallbackFont(isFallbackFont)
-        , fBasePath(basePath)
-    { }
-
-    SkTArray<SkString, true> fNames;
-    SkTArray<FontFileInfo, true> fFonts;
-    SkLanguage fLanguage;
-    FontVariant fVariant;
-    int fOrder; // internal to SkFontConfigParser
-    bool fIsFallbackFont;
-    const SkString fBasePath;
-};
-
-namespace SkFontConfigParser {
-
-/** Parses system font configuration files and appends result to fontFamilies. */
-void GetSystemFontFamilies(SkTDArray<FontFamily*>& fontFamilies);
-
-/** Parses font configuration files and appends result to fontFamilies. */
-void GetCustomFontFamilies(SkTDArray<FontFamily*>& fontFamilies,
-                           const SkString& basePath,
-                           const char* fontsXml,
-                           const char* fallbackFontsXml,
-                           const char* langFallbackFontsDir = NULL);
-
-} // SkFontConfigParser namespace
-
-
-/** Parses a null terminated string into an integer type, checking for overflow.
- *  http://www.w3.org/TR/html-markup/datatypes.html#common.data.integer.non-negative-def
- *
- *  If the string cannot be parsed into 'value', returns false and does not change 'value'.
- */
-template <typename T> static bool parse_non_negative_integer(const char* s, T* value) {
-    SK_COMPILE_ASSERT(std::numeric_limits<T>::is_integer, T_must_be_integer);
-
-    if (*s == '\0') {
-        return false;
-    }
-
-    const T nMax = std::numeric_limits<T>::max() / 10;
-    const T dMax = std::numeric_limits<T>::max() - (nMax * 10);
-    T n = 0;
-    for (; *s; ++s) {
-        // Check if digit
-        if (*s < '0' || '9' < *s) {
-            return false;
-        }
-        T d = *s - '0';
-        // Check for overflow
-        if (n > nMax || (n == nMax && d > dMax)) {
-            return false;
-        }
-        n = (n * 10) + d;
-    }
-    *value = n;
-    return true;
-}
-
-/** Parses a null terminated string into a signed fixed point value with bias N.
- *
- *  Like http://www.w3.org/TR/html-markup/datatypes.html#common.data.float-def ,
- *  but may start with '.' and does not support 'e'. '-?((:digit:+(.:digit:+)?)|(.:digit:+))'
- *
- *  Checks for overflow.
- *  Low bit rounding is not defined (is currently truncate).
- *  Bias (N) required to allow for the sign bit and 4 bits of integer.
- *
- *  If the string cannot be parsed into 'value', returns false and does not change 'value'.
- */
-template <int N, typename T> static bool parse_fixed(const char* s, T* value) {
-    SK_COMPILE_ASSERT(std::numeric_limits<T>::is_integer, T_must_be_integer);
-    SK_COMPILE_ASSERT(std::numeric_limits<T>::is_signed, T_must_be_signed);
-    SK_COMPILE_ASSERT(sizeof(T) * CHAR_BIT - N >= 5, N_must_leave_four_bits_plus_sign);
-
-    bool negate = false;
-    if (*s == '-') {
-        ++s;
-        negate = true;
-    }
-    if (*s == '\0') {
-        return false;
-    }
-
-    const T nMax = (std::numeric_limits<T>::max() >> N) / 10;
-    const T dMax = (std::numeric_limits<T>::max() >> N) - (nMax * 10);
-    T n = 0;
-    T frac = 0;
-    for (; *s; ++s) {
-        // Check if digit
-        if (*s < '0' || '9' < *s) {
-            // If it wasn't a digit, check if it is a '.' followed by something.
-            if (*s != '.' || s[1] == '\0') {
-                return false;
-            }
-            // Find the end, verify digits.
-            for (++s; *s; ++s) {
-                if (*s < '0' || '9' < *s) {
-                    return false;
-                }
-            }
-            // Read back toward the '.'.
-            for (--s; *s != '.'; --s) {
-                T d = *s - '0';
-                frac = (frac + (d << N)) / 10; // This requires four bits overhead.
-            }
-            break;
-        }
-        T d = *s - '0';
-        // Check for overflow
-        if (n > nMax || (n == nMax && d > dMax)) {
-            return false;
-        }
-        n = (n * 10) + d;
-    }
-    if (negate) {
-        n = -n;
-        frac = -frac;
-    }
-    *value = (n << N) + frac;
-    return true;
-}
-
-#endif /* SKFONTCONFIGPARSER_ANDROID_H_ */