/**

 * MojoShader; generate shader programs from bytecode of compiled

 *  Direct3D shaders.

 *

 * Please see the file LICENSE.txt in the source's root directory.

 *

 *  This file written by Ryan C. Gordon.

 */

#include <stdio.h>

#include <stdlib.h>

#include "mojoshader.h"

static int preprocess(const char *buf, int len, const char *outfile)

{

    FILE *io = fopen(outfile, "wb");

    if (io == NULL)

    {

        printf(" ... fopen('%s') failed.\n", outfile);

        return 0;

    } // if

    const MOJOSHADER_preprocessData *pd;

    int retval = 0;

    pd = MOJOSHADER_preprocess(buf, len, NULL, 0, NULL,

                               NULL, NULL, NULL, NULL);

    if (pd->error_count > 0)

    {

        int i;

        for (i = 0; i < pd->error_count; i++)

        {

            printf("ERROR: (line %d) %s\n",

                    pd->errors[i].error_position,

                    pd->errors[i].error);

        } // for

    } // if

    else

    {

        if (pd->output != NULL)

        {

            if (fwrite(pd->output, pd->output_len, 1, io) != 1)

                printf(" ... fwrite('%s') failed.\n", outfile);

            else if (fclose(io) == EOF)

                printf(" ... fclose('%s') failed.\n", outfile);

            else

                retval = 1;

        } // if

    } // else

    MOJOSHADER_freePreprocessData(pd);

    return retval;

} // preprocess

int main(int argc, char **argv)

{

    int retval = 1;

    if (argc != 3)

        printf("\n\nUSAGE: %s <inputfile> <outputfile>\n\n", argv[0]);

    else

    {

        const char *infile = argv[1];

        const char *outfile = argv[2];

        FILE *io = fopen(infile, "rb");

        if (io == NULL)

            printf(" ... fopen('%s') failed.\n", infile);

        else

        {

            char *buf = (char *) malloc(1000000);

            int rc = fread(buf, 1, 1000000, io);

            fclose(io);

            if (rc == EOF)

                printf(" ... fread('%s') failed.\n", infile);

            else

            {

                if (preprocess(buf, rc, outfile))

                    retval = 0;

                else

                    remove(outfile);

                free(buf);

            } // else

        } // for

    } // else

    return retval;

} // main

// end of preprocess.c ...