source: cpp/common/stl-util.cpp @ 238

// This file is a part of the Framsticks GDK.
// Copyright (C) 1999-2014  Maciej Komosinski and Szymon Ulatowski.  See LICENSE.txt for details.
// Refer to http://www.framsticks.com/ for further information.

#include "stl-util.h"
#include <stdarg.h>
#include <stdlib.h>
#include "nonstd_stdio.h"
#include "nonstd.h"
#include "framsg.h"
#include <assert.h>

string ssprintf_va(const char* format, va_list ap)
{
        string s; //clang crashed when this declaration was in s=buf
        long size=256;
        char* buf;

        //almost like SString::sprintf, but there is no common code to share because SString can use its directWrite to avoid double allocating/copying
#ifdef USE_VSCPRINTF
        size=_vscprintf(format, ap);
#endif

        while(1)
                {
                buf=(char*)malloc(size);
                assert(buf!=NULL);
                int n=vsnprintf(buf,size,format,ap);
                if (n > -1 && n < size)
                        {
                        s=buf;
                        free(buf);
                        return s;
                        }
#ifdef VSNPRINTF_RETURNS_REQUIRED_SIZE
                if (n > -1)    /* glibc 2.1 */
                        size = n+1; /* precisely what is needed */
                else           /* glibc 2.0 */
#endif
                        size *= 2;  /* twice the old size */
                free(buf);
                }
}

string ssprintf(const char* format, ...)
{
        va_list ap;
        va_start(ap, format);
        string ret=ssprintf_va(format,ap); //is it too wasteful? copying the string again... unless the compiler can handle it better
        va_end(ap);
        return ret;
}

bool readCompleteFile(const char* filename, vector<char>& data, bool warn_on_missing_file)
{
        MFILE *f=mfopen(filename,FOPEN_READ_BINARY);
        bool ok=f!=NULL;
        if (f)
        {
                mfseek(f,0,SEEK_END);
                long size=mftell(f);
                mfseek(f,0,SEEK_SET);
                data.resize(size);
                int przeczytane=mfread(&data[0],size,1,f);
                mfclose(f);
                ok&=przeczytane==1;
        }
        if (warn_on_missing_file && !ok)
                FMprintf("stl-util","readCompleteFile",FMLV_WARN,"Couldn't open file '%s'",filename);
        return ok;
}

bool readCompleteFile(const char* filename, string& out, bool warn_on_missing_file)
{
        std::vector<char> data;
        if (readCompleteFile(filename,data,warn_on_missing_file))
        {
                out=string(&data[0],data.size());
                return true;
        }
        return false;
}

bool writeCompleteFile(const char* filename, const string& text, bool warn_on_fail)
{
        MFILE *f=mfopen(filename,FOPEN_WRITE_BINARY);
        bool ok=f!=NULL;
        if (f)
        {
                int zapisane=mfwrite(text.c_str(),text.length(),1,f);
                mfclose(f);
                ok&=zapisane==1;
        }
        if (warn_on_fail && !ok)
                FMprintf("stl-util","writeCompleteFile",FMLV_WARN,"couldn't write file '%s'",filename);
        return ok;
}

bool writeCompleteFile(const char* filename, vector<char>& data, bool warn_on_fail)
{
        string s(&data[0],data.size());
        return writeCompleteFile(filename, s, warn_on_fail);
}



std::string stripExt(const std::string& filename)
{
        int dot=filename.rfind('.');
        if (dot==std::string::npos) return filename;
        int sep=filename.rfind(PATH_SEPARATOR_CHAR);
        if ((sep==std::string::npos)||(sep<dot))
                return filename.substr(0,dot);
        return filename;
}

std::string getFileExt(const std::string& filename)
{
        int dot=filename.rfind('.');
        if (dot==std::string::npos) return string("");
        int sep=filename.rfind(PATH_SEPARATOR_CHAR);
        if ((sep==std::string::npos)||(sep<dot))
                return filename.substr(dot);
        return string("");
}