printf/ft_sprintf.c

#include "ft_printf_internal.h"

int ft_sprintf(char* output, char* format, ...)
{
    va_list args;
    int result;

    va_start(args, format);
    result = ft_vsnprintf(output, -1, format, args);
    va_end(args);
    return result;
}

int ft_snprintf(char* output, int bufLen, char* format, ...)
{
    va_list args;
    int result;

    va_start(args, format);
    result = ft_vsnprintf(output, bufLen, format, args);
    va_end(args);
    return result;
}

int ft_vsprintf(char* output, char* format, va_list args)
{
    return ft_vsnprintf(output, -1, format, args);
}

int ft_vsnprintf(char* output, int bufLen, char* format, va_list args)
{
    struct printf_data params;

    params.fd = -1;
    params.written = 0;
    params.inputBuffer = format;
    params.outputBuffer = output;
    params.bufferMaxSize = bufLen;
    params.realloc = 0;
    params.fdBuffer = NULL;
    params.bufferPos = 0;
    while (*params.inputBuffer)
    {
        if (doPrintf(&params, args) < 0)
            return -1;
    }
    flushBuffer(&params);
    return params.written;
}