Move SkUtils.h to src/core.

include/core/SkUtils.h

-/*
- * 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.
- */
-
-#ifndef SkUtils_DEFINED
-#define SkUtils_DEFINED
-
-#include "SkTypes.h"
-
-/** Similar to memset(), but it assigns a 16bit value into the buffer.
-    @param buffer   The memory to have value copied into it
-    @param value    The 16bit value to be copied into buffer
-    @param count    The number of times value should be copied into the buffer.
-*/
-static inline void sk_memset16(uint16_t buffer[], uint16_t value, int count) {
-    for (int i = 0; i < count; i++) {
-        buffer[i] = value;
-    }
-}
-
-/** Similar to memset(), but it assigns a 32bit value into the buffer.
-    @param buffer   The memory to have value copied into it
-    @param value    The 32bit value to be copied into buffer
-    @param count    The number of times value should be copied into the buffer.
-*/
-static inline void sk_memset32(uint32_t buffer[], uint32_t value, int count) {
-    for (int i = 0; i < count; i++) {
-        buffer[i] = value;
-    }
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-#define kMaxBytesInUTF8Sequence     4
-
-#ifdef SK_DEBUG
-    int SkUTF8_LeadByteToCount(unsigned c);
-#else
-    #define SkUTF8_LeadByteToCount(c)   ((((0xE5 << 24) >> ((unsigned)c >> 4 << 1)) & 3) + 1)
-#endif
-
-inline int SkUTF8_CountUTF8Bytes(const char utf8[]) {
-    SkASSERT(utf8);
-    return SkUTF8_LeadByteToCount(*(const uint8_t*)utf8);
-}
-
-int         SkUTF8_CountUnichars(const char utf8[]);
-int         SkUTF8_CountUnichars(const char utf8[], size_t byteLength);
-SkUnichar   SkUTF8_ToUnichar(const char utf8[]);
-SkUnichar   SkUTF8_NextUnichar(const char**);
-SkUnichar   SkUTF8_PrevUnichar(const char**);
-
-/** Return the number of bytes need to convert a unichar
-    into a utf8 sequence. Will be 1..kMaxBytesInUTF8Sequence,
-    or 0 if uni is illegal.
-*/
-size_t      SkUTF8_FromUnichar(SkUnichar uni, char utf8[] = NULL);
-
-///////////////////////////////////////////////////////////////////////////////
-
-#define SkUTF16_IsHighSurrogate(c)  (((c) & 0xFC00) == 0xD800)
-#define SkUTF16_IsLowSurrogate(c)   (((c) & 0xFC00) == 0xDC00)
-
-int SkUTF16_CountUnichars(const uint16_t utf16[]);
-int SkUTF16_CountUnichars(const uint16_t utf16[], int numberOf16BitValues);
-// returns the current unichar and then moves past it (*p++)
-SkUnichar SkUTF16_NextUnichar(const uint16_t**);
-// this guy backs up to the previus unichar value, and returns it (*--p)
-SkUnichar SkUTF16_PrevUnichar(const uint16_t**);
-size_t SkUTF16_FromUnichar(SkUnichar uni, uint16_t utf16[] = NULL);
-
-size_t SkUTF16_ToUTF8(const uint16_t utf16[], int numberOf16BitValues,
-                      char utf8[] = NULL);
-
-inline bool SkUnichar_IsVariationSelector(SkUnichar uni) {
-/*  The 'true' ranges are:
- *      0x180B  <= uni <=  0x180D
- *      0xFE00  <= uni <=  0xFE0F
- *      0xE0100 <= uni <= 0xE01EF
- */
-    if (uni < 0x180B || uni > 0xE01EF) {
-        return false;
-    }
-    if ((uni > 0x180D && uni < 0xFE00) || (uni > 0xFE0F && uni < 0xE0100)) {
-        return false;
-    }
-    return true;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-class SkAutoTrace {
-public:
-    /** NOTE: label contents are not copied, just the ptr is
-        retained, so DON'T DELETE IT.
-    */
-    SkAutoTrace(const char label[]) : fLabel(label) {
-        SkDebugf("--- trace: %s Enter\n", fLabel);
-    }
-    ~SkAutoTrace() {
-        SkDebugf("--- trace: %s Leave\n", fLabel);
-    }
-private:
-    const char* fLabel;
-};
-#define SkAutoTrace(...) SK_REQUIRE_LOCAL_VAR(SkAutoTrace)
-
-#endif