nstring.h

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        else
        {
            // a match, advance to next character
            ++thisIndex;
        }
    }
    nString trimmedString(&(this->Get()[thisIndex]));
    return trimmedString;
}

//------------------------------------------------------------------------------
/**
    Returns a new string, which is this string, stripped on the right side 
    by all characters in the char set.
*/
inline
nString
nString::TrimRight(const char* charSet) const
{
    ASSERT(charSet);
    if (this->IsEmpty())
    {
        return *this;
    }

    int charSetLen = strlen(charSet);
    int thisIndex = this->strLen - 1;
    bool stopped = false;
    while (!stopped && (thisIndex < this->strLen))
    {
        int charSetIndex;
        bool match = false;
        for (charSetIndex = 0; charSetIndex < charSetLen; charSetIndex++)
        {
            if ((*this)[thisIndex] == charSet[charSetIndex])
            {
                // a match
                match = true;
                break;
            }
        }
        if (!match)
        {
            // stop if no match
            stopped = true;
        }
        else
        {
            // a match, advance to next character
            --thisIndex;
        }
    }
    nString trimmedString;
    trimmedString.Set(this->Get(), thisIndex + 1);
    return trimmedString;
}

//------------------------------------------------------------------------------
/**
    Trim both sides of a string.
*/
inline
nString
nString::Trim(const char* charSet) const
{
    return this->TrimLeft(charSet).TrimRight(charSet);
}

//------------------------------------------------------------------------------
/**
    Substitute every occurance of origStr with substStr.
*/
inline
nString
nString::Substitute(const char* matchStr, const char* substStr) const
{
    ASSERT(matchStr && substStr);

    const char* ptr = this->Get();
    int matchStrLen = strlen(matchStr);
    nString dest;

    // walk original string for occurances of str
    const char* occur;
    while ((occur = strstr(ptr, matchStr)))
    {
        // append string fragment until match
        dest.AppendRange(ptr, occur - ptr);

        // append replacement string
        dest.Append(substStr);

        // adjust source pointer
        ptr = occur + matchStrLen;
    }
    dest.Append(ptr);
    return dest;
}

//------------------------------------------------------------------------------
/**
    Returns content as integer.
*/
inline
int
nString::AsInt() const
{
    const char* ptr = this->Get();
    return atoi(ptr);
}

//------------------------------------------------------------------------------
/**
    Returns content as float.
*/
inline
float
nString::AsFloat() const
{
    const char* ptr = this->Get();
    return float(atof(ptr));
}

//------------------------------------------------------------------------------
/**
    This converts an UTF-8 string to 8-bit-ANSI. Note that only characters
    in the range 0 .. 255 are converted, all other characters will be converted
    to a question mark.

    For conversion rules see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8
*/
inline
void
nString::UTF8toANSI()
{
    uchar* src = (uchar*) this->Get();
    uchar* dst = src;
    uchar c;
    while ((c = *src++))
    {
        if (c >= 0x80)
        {
            if ((c & 0xE0) == 0xC0)
            {
                // a 2 byte sequence with 11 bits of information
                ushort wide = ((c & 0x1F) << 6) | (*src++ & 0x3F);
                if (wide > 0xff)
                {
                    c = '?';
                }
                else
                {
                    c = (uchar) wide;
                }
            }
            else if ((c & 0xF0) == 0xE0)
            {
                // a 3 byte sequence with 16 bits of information
                c = '?';
                src += 2;
            }
            else if ((c & 0xF8) == 0xF0)
            {
                // a 4 byte sequence with 21 bits of information
                c = '?';
                src += 3;
            }
            else if ((c & 0xFC) == 0xF8)
            {
                // a 5 byte sequence with 26 bits of information
                c = '?';
                src += 4;
            }
            else if ((c & 0xFE) == 0xFC)
            {
                // a 6 byte sequence with 31 bits of information
                c = '?';
                src += 5;
            }
        }
        *dst++ = c;
    }
    *dst = 0;
}
//------------------------------------------------------------------------------
/**
    Convert contained ANSI string to UTF-8 in place.
*/
inline
void
nString::ANSItoUTF8()
{
    ASSERT(!this->IsEmpty());
    int bufSize = this->Length() * 2 + 1;
    char* buffer = new char[bufSize];
    char* dstPtr = buffer;
    const char* srcPtr = this->Get();
    unsigned char c;
    while ((c = *srcPtr++))
    {
        // note: this only covers the 2 cases that the character
        // is between 0 and 127 and between 128 and 255
        if (c < 128)
        {
            *dstPtr++ = c;
        }
        else
        {
            *dstPtr++ = 192 + (c / 64);
            *dstPtr++ = 128 + (c % 64);
        }
    }
    *dstPtr = 0;
    this->Set(buffer);
    delete[] buffer;
}

//------------------------------------------------------------------------------
/**
    Converts backslashes to slashes.
*/
inline
void
nString::ConvertBackslashes()
{
    char* ptr = (char*) this->Get();
    int i;
    for (i = 0; i <= this->strLen; i++)
    {
        if (ptr[i] == '\\')
        {
            ptr[i] = '/';
        }
    }
}

//------------------------------------------------------------------------------
/**
    @return     pointer to extension (without the dot), or 0
*/
inline
const char*
nString::GetExtension() const
{
    const char* str = this->Get();
    const char* ext = strrchr(str, '.');
    if (ext)
    {
        ext++;
        if (ext[0] != 0)
        {
            return ext;
        }
    }
    return 0;
}

//------------------------------------------------------------------------------
/**
    Returns true if file extension matches.

    @param  ext     extension string (without the dot)
    @return         true if extension matches
*/
inline
bool
nString::CheckExtension(const char* ext) const
{
    ASSERT(ext);
    const char* extStr = this->GetExtension();
	if (0 == extStr)
    {
		return false;
    }
    return (0 == (strcmp(ext, extStr)));
}

//------------------------------------------------------------------------------
/**
    Remove the file extension.
*/
inline
void
nString::StripExtension()
{
    char* ext = (char*) this->GetExtension();
    if (ext)
    {
        ext[-1] = 0;
    }
}

//------------------------------------------------------------------------------
/**
    Get a pointer to the last directory separator.
*/
inline
char*
nString::GetLastSlash() const
{
    char* s = (char*) this->Get();
    char* lastSlash = strrchr(s, '/');
    if (0 == lastSlash) lastSlash = strrchr(s, '\\');
    if (0 == lastSlash) lastSlash = strrchr(s, ':');
    return lastSlash;
}

//------------------------------------------------------------------------------
/**
    Return a nString object containing the part after the last
    path separator.
*/
inline
nString
nString::ExtractFileName() const
{
    nString pathString;
    char* lastSlash = this->GetLastSlash();
    if (lastSlash)
    {
        pathString = &(lastSlash[1]);
    }
    else
    {
        pathString = this->Get();
    }
    return pathString;
}

//------------------------------------------------------------------------------
/**
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*/
inline 
bool 
nString::IsNumberic()
{
    int len=this->Length();
    nString str=this->Get();

    for(int i=0;i<len;i++)
    {
        if(isdigit(str[i])==0)
        {
            return false;
        }
    }

    return true;
}
//------------------------------------------------------------------------------
/**
    Return a nString object containing the last directory of the path, i.e.
    a category.

    - 17-Feb-04     floh    fixed a bug when the path ended with a slash
*/
inline
nString
nString::ExtractLastDirName() const
{
    nString pathString(*this);
    char* lastSlash = pathString.GetLastSlash();
    
    // special case if path ends with a slash
    if (lastSlash)
    {
        if (0 == lastSlash[1])
        {
            *lastSlash = 0;
            lastSlash = pathString.GetLastSlash();
        }

        char* secLastSlash = 0;
        if (0 != lastSlash)
        {
            *lastSlash = 0; // cut filename
            secLastSlash = pathString.GetLastSlash();
            if (secLastSlash)
            {
                *secLastSlash = 0;
                return nString(secLastSlash+1);
            }
        }
    }
    return "";
}

//------------------------------------------------------------------------------
/**
    Return a nString object containing the part before the last
    directory separator.
    
    NOTE: I left my fix in that returns the last slash (or colon), this was 
    necessary to tell if a dirname is a normal directory or an assign.     

    - 17-Feb-04     floh    fixed a bug when the path ended with a slash
*/
inline
nString
nString::ExtractDirName() const
{
    nString pathString(*this);
    char* lastSlash = pathString.GetLastSlash();

    // special case if path ends with a slash
    if (lastSlash)
    {
        if (0 == lastSlash[1])
        {
            *lastSlash = 0;
            lastSlash = pathString.GetLastSlash();
        }
        if (lastSlash)
        {
            *++lastSlash = 0;
        }
    }
    return pathString;
}

//------------------------------------------------------------------------------
/**
    Return a path string object which contains of the complete path
    up to the last slash. Returns an empty string if there is no
    slash in the path.
*/
inline
nString
nString::ExtractToLastSlash() const
{
    nString pathString(*this);
    char* lastSlash = pathString.GetLastSlash();
    if (lastSlash)
    {
        lastSlash[1] = 0;
    }
    else
    {
        pathString = "";
    }
    return pathString;
}

//------------------------------------------------------------------------------
/**
*/
/*
inline
bool
nString::MatchPattern(const nString& pattern) const
{
    return n_strmatch(this->Get(), pattern.Get());
}
*/
//------------------------------------------------------------------------------
#endif