path: root/src/main.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include "cmark.h"

void print_usage()
{
    printf("Usage:   cmark [FILE*]\n");
    printf("Options: --help, -h    Print usage information\n");
    printf("         --ast         Print AST instead of HTML\n");
    printf("         --version     Print version\n");
}

static void print_document(node_block *document, bool ast)
{
    strbuf html = GH_BUF_INIT;

    if (ast) {
        cmark_debug_print(document);
    } else {
        cmark_render_html(&html, document);
        printf("%s", html.ptr);
        strbuf_free(&html);
    }
}

int main(int argc, char *argv[])
{
    int i, numfps = 0;
    bool ast = false;
    int files[argc];
    node_block *document = NULL;

    for (i = 1; i < argc; i++) {
        if (strcmp(argv[i], "--version") == 0) {
            printf("cmark %s", VERSION);
            printf(" - CommonMark converter (c) 2014 John MacFarlane\n");
            exit(0);
        } else if ((strcmp(argv[i], "--help") == 0) ||
               (strcmp(argv[i], "-h") == 0)) {
            print_usage();
            exit(0);
        } else if (strcmp(argv[i], "--ast") == 0) {
            ast = true;
        } else if (*argv[i] == '-') {
            print_usage();
            exit(1);
        } else { // treat as file argument
            files[numfps++] = i;
        }
    }

    if (numfps == 0) {
        document = cmark_parse_file(stdin);
        print_document(document, ast);
        cmark_free_nodes(document);
    } else {
        for (i = 0; i < numfps; i++) {
            FILE *fp = fopen(argv[files[i]], "r");

            if (fp == NULL) {
                fprintf(stderr, "Error opening file %s: %s\n",
                    argv[files[i]], strerror(errno));
                exit(1);
            }

            document = cmark_parse_file(fp);
            print_document(document, ast);
            cmark_free_nodes(document);
            fclose(fp);
        }
    }

    return 0;
}