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