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/*************************************************************************
* Copyright (C) 2009 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of Dimension. *
* *
* Dimension is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 3 of the License, or (at *
* your option) any later version. *
* *
* Dimension is distributed in the hope that it will be useful, but *
* WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
*************************************************************************/
#include "tokenize.h"
#include "parse.h"
#include "realize.h"
#include "../libdimension/dimension.h"
#include <stdlib.h>
#include <getopt.h>
static const char *output = NULL, *input = NULL;
static int tokenize = 0, parse = 0;
int
main(int argc, char **argv) {
FILE *input_file, *output_file;
/*
* Parse the command-line options
*/
static struct option long_options[] = {
{ "output", required_argument, NULL, 'o' },
{ "input", required_argument, NULL, 'i' },
{ "tokenize", no_argument, &tokenize, 1 },
{ "parse", no_argument, &parse, 1 },
{ 0, 0, 0, 0 }
};
int opt, opt_index;
while (1) {
opt = getopt_long(argc, argv, "o:i:", long_options, &opt_index);
if (opt == -1)
break;
switch (opt) {
case 0:
/* Option set a flag - do nothing here */
break;
case 'o':
if (output) {
dmnsn_error(DMNSN_SEVERITY_HIGH, "--output specified more than once.");
} else {
output = optarg;
}
break;
case 'i':
if (input) {
dmnsn_error(DMNSN_SEVERITY_HIGH, "--input specified more than once.");
} else {
input = optarg;
}
break;
default:
dmnsn_error(DMNSN_SEVERITY_HIGH, "Error parsing command line.");
};
}
if (optind == argc - 1) {
if (input) {
dmnsn_error(DMNSN_SEVERITY_HIGH, "Multiple input files specified.");
} else {
input = argv[optind];
}
} else if (optind < argc) {
dmnsn_error(DMNSN_SEVERITY_HIGH,
"Invalid extranious command line options.");
}
if (!output && !(tokenize || parse)) {
dmnsn_error(DMNSN_SEVERITY_HIGH, "No output file specified.");
}
if (!input) {
dmnsn_error(DMNSN_SEVERITY_HIGH, "No input file specified.");
}
/* Open the input file */
input_file = fopen(input, "r");
if (!input_file) {
dmnsn_error(DMNSN_SEVERITY_HIGH, "Couldn't open input file.");
}
/* Tokenize the input file */
dmnsn_array *tokens = dmnsn_tokenize(input, input_file);
if (!tokens) {
fclose(input_file);
dmnsn_error(DMNSN_SEVERITY_HIGH, "Error tokenizing input file.");
}
fclose(input_file);
/* Debugging option - output the list of tokens as an S-expression */
if (tokenize) {
dmnsn_print_token_sexpr(stdout, tokens);
if (!parse) {
dmnsn_delete_tokens(tokens);
return EXIT_SUCCESS;
}
}
/* Parse the input */
dmnsn_array *astree = dmnsn_parse(tokens);
if (!astree) {
dmnsn_delete_tokens(tokens);
dmnsn_error(DMNSN_SEVERITY_HIGH, "Error parsing input file.");
}
dmnsn_delete_tokens(tokens);
/* Debugging option - output the abstract syntax tree as an S-expression */
if (parse) {
dmnsn_print_astree_sexpr(stdout, astree);
dmnsn_delete_astree(astree);
return EXIT_SUCCESS;
}
/* Realize the input */
dmnsn_scene *scene = dmnsn_realize(astree);
if (!scene) {
dmnsn_delete_astree(astree);
dmnsn_error(DMNSN_SEVERITY_HIGH, "Error realizing input file.");
}
dmnsn_delete_astree(astree);
/*
* Now we render the scene
*/
if (dmnsn_raytrace_scene(scene) != 0) {
dmnsn_delete_scene(scene);
dmnsn_error(DMNSN_SEVERITY_HIGH, "Error rendering scene.");
}
dmnsn_delete_scene(scene);
/* Open the output file */
output_file = fopen(output, "wb");
if (!output_file) {
dmnsn_error(DMNSN_SEVERITY_HIGH, "Couldn't open output file.");
}
if (dmnsn_png_write_canvas(scene->canvas, output_file) != 0) {
fclose(output_file);
dmnsn_error(DMNSN_SEVERITY_HIGH, "Couldn't write output.");
}
fclose(output_file);
/* Clean up and exit! */
return EXIT_SUCCESS;
}
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