// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "xfa/fgas/crt/fgas_system.h"
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#include <algorithm>
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#include "core/fxcrt/include/fx_system.h"
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namespace {
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inline FX_BOOL FX_isupper(int32_t ch) {
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return ch >= 'A' && ch <= 'Z';
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}
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inline int32_t FX_tolower(int32_t ch) {
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return FX_isupper(ch) ? (ch + 0x20) : ch;
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}
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} // namespace
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int32_t FX_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count) {
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ASSERT(s1 && s2 && count > 0);
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FX_WCHAR wch1 = 0;
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FX_WCHAR wch2 = 0;
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while (count-- > 0) {
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wch1 = (FX_WCHAR)FX_tolower(*s1++);
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wch2 = (FX_WCHAR)FX_tolower(*s2++);
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if (wch1 != wch2) {
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break;
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}
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}
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return wch1 - wch2;
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}
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FX_FLOAT FX_wcstof(const FX_WCHAR* pwsStr, int32_t iLength, int32_t* pUsedLen) {
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ASSERT(pwsStr);
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if (iLength < 0) {
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iLength = FXSYS_wcslen(pwsStr);
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}
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if (iLength == 0) {
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return 0.0f;
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}
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int32_t iUsedLen = 0;
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FX_BOOL bNegtive = FALSE;
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switch (pwsStr[iUsedLen]) {
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case '-':
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bNegtive = TRUE;
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case '+':
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iUsedLen++;
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break;
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}
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FX_FLOAT fValue = 0.0f;
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while (iUsedLen < iLength) {
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FX_WCHAR wch = pwsStr[iUsedLen];
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if (wch >= L'0' && wch <= L'9') {
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fValue = fValue * 10.0f + (wch - L'0');
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} else {
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break;
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}
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iUsedLen++;
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}
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if (iUsedLen < iLength && pwsStr[iUsedLen] == L'.') {
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FX_FLOAT fPrecise = 0.1f;
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while (++iUsedLen < iLength) {
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FX_WCHAR wch = pwsStr[iUsedLen];
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if (wch >= L'0' && wch <= L'9') {
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fValue += (wch - L'0') * fPrecise;
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fPrecise *= 0.1f;
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} else {
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break;
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}
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}
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}
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if (pUsedLen) {
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*pUsedLen = iUsedLen;
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}
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return bNegtive ? -fValue : fValue;
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}
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