warp/main.c

#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include "main.h"
#include "args.h"
#include "code.h"

const char *argp_program_version = "warp";
const char *argp_program_bug_address = "<t.rice@ms.unimelb.edu.au>";
FILE *ist;

#define IUNIT 1024 // Reading block size.
#define IO_ERROR 5

int main(int argc, char *argv[]) {
    ist = stdin;

    /* Set argument defaults */
    struct arguments args;
    args.infile = NULL;
    args.langs = NULL;
    args.complement = false;
    argp_parse(&argp, argc, argv, 0, 0, &args);
    if(args.infile) {
        ist = fopen(args.infile, "r");
		if (!ist) {
			fprintf(stderr, "Unable to open input file \"%s\": %s\n", args.infile, strerror(errno));
			return FILESYSTEM_ERROR;
		}
    }
   
    /* Process input */
    hoedown_buffer *ib;
    ib = hoedown_buffer_new(IUNIT);
    bool proc_input_success = (hoedown_buffer_putf(ib, ist) == 0);
    if(ist != NULL) {
        fclose(ist);
    }
    ist = NULL;
    if(!proc_input_success) {
        fprintf(stderr, "Error reading input.\n");
        if(ib) {
            hoedown_buffer_free(ib);
        }
        return IO_ERROR;
    }

    /* Print in defined output format to destination. */
    unsigned int extensions = HOEDOWN_EXT_FENCED_CODE;
    hoedown_renderer* renderer = hoedown_code_renderer_new(args.langs, args.complement);
    hoedown_document* document = hoedown_document_new(renderer, extensions, 16);
    hoedown_buffer* ob = hoedown_buffer_new(16);
    hoedown_document_render(document, ob, ib->data, ib->size);

    /* Tidy up */
	(void)fwrite(ob->data, 1, ob->size, stdout);
    hoedown_buffer_free(ib);
    hoedown_document_free(document);
    hoedown_code_renderer_free(renderer);
    return 0;
}