warerror.c

ftpserver very good sample

#include <string.h>
#include <assert.h>
#include "StdAfx.h"
#include <malloc.h>
#include <stdlib.h>

#include "WarError.h"   // class implemented

war_ccstr_t war_get_system_error_text(const int err_no,
                                      war_cstr_t buffer,
                                      const size_t buffer_length)
{
    war_ccstr_t p = "";
    int i;
#ifdef WIN32
    war_cstr_t pp = NULL;

    LPTSTR tmp_buffer = alloca(sizeof(TCHAR) * buffer_length);

    if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
                      NULL,
                      err_no,
                      MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
                      tmp_buffer,
                      buffer_length,
                      NULL) > 0)
    {
#ifdef UNICODE
        wcstombs(buffer, tmp_buffer, buffer_length);
#else
        memcpy(buffer, tmp_buffer, buffer_length);
#endif
        p = buffer;
        for(pp = buffer; *pp; pp++)
        {
            if ((*pp == '\r') || (*pp == '\n'))
            {
                *pp = 0;
                break;
            }
        }
    }

#else
    p = strerror(err_no);
#endif /* WIN32 */

    if (NULL == p || 0 == *p)
    {
        for(i = 0; NULL != WarSysErrorText[i].mErrotText; ++i)
        {
            if (WarSysErrorText[i].mErrorCode == err_no)
            {
                p = WarSysErrorText[i].mErrotText;
                break;
            }
        }
    }

    return p;
}

war_ccstr_t war_get_local_error_text(const int err_no)
{
    int i;

    for(i = 0; NULL != WarErrorText[i].mErrotText; ++i)
    {
        if (WarErrorText[i].mErrorCode == err_no)
            return WarErrorText[i].mErrotText;
    }

    return "";
}