/*
 * Copyright 2006 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 "SkUtils.h"

template <typename T>
static SkUnichar next(const T** srcPtr, unsigned N, SkUnichar (*fn)(const T**, const T*)) {
    SkASSERT(srcPtr);
    const T* ptr = *srcPtr;
    SkUnichar c = fn(&ptr, ptr + N);
    if (c == -1) {
        SkASSERT(false);
        ++(*srcPtr);
        return 0xFFFD;  // REPLACEMENT CHARACTER
    }
    *srcPtr = ptr;
    return c;
}
SkUnichar SkUTF8_NextUnichar(const char** p) {
    return next<char>(p, SkUTF::kMaxBytesInUTF8Sequence, SkUTF::NextUTF8);
}
SkUnichar SkUTF16_NextUnichar(const uint16_t** p) {
    return next<uint16_t>(p, 2, SkUTF::NextUTF16);
}

///////////////////////////////////////////////////////////////////////////////

const char SkHexadecimalDigits::gUpper[16] =
    { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
const char SkHexadecimalDigits::gLower[16] =
    { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };