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// Common/Lang.cpp
#include "StdAfx.h"
#include "Lang.h"
#include "TextConfig.h"
#include "../Windows/FileIO.h"
#include "UTFConvert.h"
#include "Defs.h"
static bool HexStringToNumber(const UString &s, UInt32 &value)
{
value = 0;
if (s.IsEmpty())
return false;
for (int i = 0; i < s.Length(); i++)
{
wchar_t c = s[i];
int a;
if (c >= L'0' && c <= L'9')
a = c - L'0';
else if (c >= L'A' && c <= L'F')
a = 10 + c - L'A';
else if (c >= L'a' && c <= L'f')
a = 10 + c - L'a';
else
return false;
value *= 0x10;
value += a;
}
return true;
}
static bool WaitNextLine(const AString &s, int &pos)
{
for (; pos < s.Length(); pos++)
if (s[pos] == 0x0A)
return true;
return false;
}
static int CompareLangItems(void *const *elem1, void *const *elem2, void *)
{
const CLangPair &langPair1 = *(*((const CLangPair **)elem1));
const CLangPair &langPair2 = *(*((const CLangPair **)elem2));
return MyCompare(langPair1.Value, langPair2.Value);
}
bool CLang::Open(LPCWSTR fileName)
{
_langPairs.Clear();
NWindows::NFile::NIO::CInFile file;
if (!file.Open(fileName))
return false;
UInt64 length;
if (!file.GetLength(length))
return false;
if (length > (1 << 20))
return false;
AString s;
char *p = s.GetBuffer((int)length + 1);
UInt32 processed;
if (!file.Read(p, (UInt32)length, processed))
return false;
p[(UInt32)length] = 0;
s.ReleaseBuffer();
file.Close();
int pos = 0;
if (s.Length() >= 3)
{
if (Byte(s[0]) == 0xEF && Byte(s[1]) == 0xBB && Byte(s[2]) == 0xBF)
pos += 3;
}
/////////////////////
// read header
AString stringID = ";!@Lang@!UTF-8!";
if (s.Mid(pos, stringID.Length()) != stringID)
return false;
pos += stringID.Length();
if (!WaitNextLine(s, pos))
return false;
CObjectVector<CTextConfigPair> pairs;
if (!GetTextConfig(s.Mid(pos), pairs))
return false;
_langPairs.Reserve(_langPairs.Size());
for (int i = 0; i < pairs.Size(); i++)
{
CTextConfigPair textConfigPair = pairs[i];
CLangPair langPair;
if (!HexStringToNumber(textConfigPair.ID, langPair.Value))
return false;
langPair.String = textConfigPair.String;
_langPairs.Add(langPair);
}
_langPairs.Sort(CompareLangItems, NULL);
return true;
}
int CLang::FindItem(UInt32 value) const
{
int left = 0, right = _langPairs.Size();
while (left != right)
{
UInt32 mid = (left + right) / 2;
UInt32 midValue = _langPairs[mid].Value;
if (value == midValue)
return mid;
if (value < midValue)
right = mid;
else
left = mid + 1;
}
return -1;
}
bool CLang::GetMessage(UInt32 value, UString &message) const
{
int index = FindItem(value);
if (index < 0)
return false;
message = _langPairs[index].String;
return true;
}
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