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/*
* winchar.cpp
*
* This file is a part of NSIS.
*
* Copyright (C) 1999-2020 Nullsoft and Contributors
*
* Licensed under the zlib/libpng license (the "License");
* you may not use this file except in compliance with the License.
*
* Licence details can be found in the file COPYING.
*
* This software is provided 'as-is', without any express or implied
* warranty.
*/
#include "Platform.h"
#include "winchar.h"
#include "util.h"
#include "utf.h"
#include <stdexcept>
#include <cassert>
using std::runtime_error;
int WinWStrICmpASCII(const WINWCHAR *a, const char *b)
{
int diff = 0;
do
diff = static_cast<int>(S7ChLwr(*a)) - static_cast<int>(S7ChLwr(*b++));
while (*a++ && !diff);
return diff;
}
int WinWStrNICmpASCII(const WINWCHAR *a, const char *b, size_t n)
{
int diff = 0;
for ( ; n--; ++a, ++b )
{
diff = static_cast<int>(S7ChLwr(*a)) - static_cast<int>(S7ChLwr(*b));
if (diff || !*a) break;
}
return diff;
}
WINWCHAR* WinWStrDupFromChar(const char *s, unsigned int cp)
{
int cch = MultiByteToWideChar(cp, 0, s, -1, 0, 0);
wchar_t *p = (wchar_t*) malloc(cch * sizeof(wchar_t));
if (p)
{
MultiByteToWideChar(cp, 0, s, -1, p, cch);
#ifndef _WIN32
wchar_t *p2 = (wchar_t*) WinWStrDupFromWC(p);
free(p), p = p2;
#endif
}
return (WINWCHAR*) p;
}
#ifndef _WIN32
size_t WinWStrLen(const WINWCHAR *s)
{
#ifdef MAKENSIS // Only makensis implements all the functions in utf.cpp
return StrLenUTF16(s);
#else
return sizeof(wchar_t) == 2 ? wcslen((wchar_t*)s) : InlineStrLenUTF16(s);
#endif
}
WINWCHAR* WinWStrCpy(WINWCHAR *d, const WINWCHAR *s)
{
WINWCHAR *ret = d;
while (*s) *d++ = *s++;
*d = 0;
return ret;
}
WINWCHAR* WinWStrNCpy(WINWCHAR *d, const WINWCHAR *s, size_t n)
{
WINWCHAR *ret = d;
while (n && *s) *d++ = *s++, n--;
while (n--) *d++ = 0;
return ret;
}
int WinWStrCmp(const WINWCHAR *a, const WINWCHAR *b)
{
int diff = 0;
do
diff = static_cast<int>(*a) - static_cast<int>(*b++);
while (*a++ && !diff);
return diff;
}
WINWCHAR* WinWStrDupFromWinWStr(const WINWCHAR *s)
{
WINWCHAR *d = (WINWCHAR*) malloc((WinWStrLen(s) + 1) * sizeof(WINWCHAR));
if (d) WinWStrCpy(d, s);
assert(!d || !IS_INTRESOURCE(d)); // DialogTemplate strings can be ATOMs
return d;
}
WINWCHAR* WinWStrDupFromWC(const wchar_t *s)
{
#ifdef MAKENSIS
WCToUTF16LEHlpr cnv;
if (!cnv.Create(s)) throw runtime_error("Unicode conversion failed");
return (WINWCHAR*) cnv.Detach();
#else
// NOTE: Anything outside the ASCII range will not convert correctly!
size_t cch = wcslen(s);
WINWCHAR* p = (WINWCHAR*) malloc(++cch * 2);
if (p) for (size_t i = 0; i < cch; ++i) p[i] = FIX_ENDIAN_INT16(s[i]);
return p;
#endif
}
int WinWStrToInt(const WINWCHAR *s)
{
unsigned int v = 0, base = 10, top = '9';
int sign = 1;
if (*s == _T('-')) ++s, sign = -1;
for ( unsigned int c;; )
{
if ((c = *s++) >= '0' && c <= top) c -= '0'; else break;
v *= base, v += c;
}
return ((int)v) * sign;
}
#endif // ~!_WIN32
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