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mkd2html.c
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/*
* mkd2html: parse a markdown input file and generate a web page.
*
* usage: mkd2html [options] filename
* or mkd2html [options] < markdown > html
*
* options
* -css css-file
* -header line-to-add-to-<HEADER>
* -footer line-to-add-before-</BODY>
*
* example:
*
* mkd2html -css /~orc/pages.css syntax
* ( read syntax OR syntax.text, write syntax.html )
*/
/*
* Copyright (C) 2007 Jessica L Parsons.
* The redistribution terms are provided in the COPYRIGHT file that must
* be distributed with this source code.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_BASENAME
# ifdef HAVE_LIBGEN_H
# include <libgen.h>
# else
# include <unistd.h>
# endif
#endif
#include <stdarg.h>
#include "mkdio.h"
#include "cstring.h"
#include "amalloc.h"
#include "gethopt.h"
char *pgm = "mkd2html";
extern int notspecial(char *filename);
#ifndef HAVE_BASENAME
char *
basename(char *path)
{
char *p;
if ( p = strrchr(path, '/') )
return 1+p;
return path;
}
#endif
void
fail(char *why, ...)
{
va_list ptr;
va_start(ptr,why);
fprintf(stderr, "%s: ", pgm);
vfprintf(stderr, why, ptr);
fputc('\n', stderr);
va_end(ptr);
exit(1);
}
enum { GFM, ADD_CSS, ADD_HEADER, ADD_FOOTER };
struct h_opt opts[] = {
{ GFM, "gfm",'G', 0, "Github style markdown" },
{ ADD_CSS, "css", 0, "url", "Additional css for this page" },
{ ADD_HEADER, "header", 0, "header", "Additional headers for this page" },
{ ADD_FOOTER, "footer", 0, "footer", "Additional footers for this page" },
};
#define NROPTS (sizeof opts/sizeof opts[0])
#if USE_H1TITLE
extern char* mkd_h1_title(MMIOT *);
#endif
int
main(int argc, char **argv)
{
char *h;
char *source = 0, *dest = 0;
MMIOT *mmiot;
int i;
int gfm = 0;
FILE *input, *output;
STRING(char*) css, headers, footers;
struct h_opt *res;
struct h_context flags;
CREATE(css);
CREATE(headers);
CREATE(footers);
pgm = basename(argv[0]);
hoptset(&flags, argc, argv);
hopterr(&flags, 1);
while ( res = gethopt(&flags, opts, NROPTS) ) {
if ( res == HOPTERR ) {
hoptusage(pgm, opts, NROPTS, "source [dest]");
exit(1);
}
switch ( res->option ) {
case ADD_CSS:
EXPAND(css) = hoptarg(&flags);
break;
case ADD_HEADER:
EXPAND(headers) = hoptarg(&flags);
break;
case ADD_FOOTER:
EXPAND(footers) = hoptarg(&flags);
break;
case GFM:
gfm = 1;
break;
default:
fprintf(stderr, "unknown option?\n");
break;
}
}
argc -= hoptind(&flags);
argv += hoptind(&flags);
switch ( argc ) {
char *p, *dot;
case 0:
input = stdin;
output = stdout;
break;
case 1:
case 2:
dest = malloc(strlen(argv[argc-1]) + 6);
source = malloc(strlen(argv[0]) + 6);
if ( !(source && dest) )
fail("out of memory allocating name buffers");
strcpy(source, argv[0]);
strcpy(dest, argv[argc-1]);
if (( p = strrchr(source, '/') ))
p = source;
else
++p;
if ( (input = fopen(source, "r")) == 0 ) {
strcat(source, ".text");
if ( (input = fopen(source, "r")) == 0 )
fail("can't open either %s or %s", argv[0], source);
}
if ( notspecial(dest) ) {
if (( dot = strrchr(dest, '.') ))
*dot = 0;
strcat(dest, ".html");
}
if ( (output = fopen(dest, "w")) == 0 )
fail("can't write to %s", dest);
break;
default:
hoptusage(pgm, opts, NROPTS, "source [dest]");
exit(1);
}
mmiot = gfm ? gfm_in(input, 0) : mkd_in(input, 0);
if ( mmiot == 0 )
fail("can't read %s", source ? source : "stdin");
if ( !mkd_compile(mmiot, 0) )
fail("couldn't compile input");
h = mkd_doc_title(mmiot);
#if USE_H1TITLE
if ( ! h )
h = mkd_h1_title(mmiot);
#endif
/* print a header */
fprintf(output,
"<!doctype html>\n"
"<html>\n"
"<head>\n"
" <meta name=\"GENERATOR\" content=\"mkd2html %s\">\n", markdown_version);
fprintf(output," <meta http-equiv=\"Content-Type\""
" content=\"text/html; charset=utf-8\">\n");
for ( i=0; i < S(css); i++ )
fprintf(output, " <link rel=\"stylesheet\"\n"
" type=\"text/css\"\n"
" href=\"%s\" />\n", T(css)[i]);
fprintf(output," <title>");
if ( h )
mkd_generateline(h, strlen(h), output, 0);
/* xhtml requires a <title> in the header, even if it doesn't
* contain anything
*/
fprintf(output, "</title>\n");
for ( i=0; i < S(headers); i++ )
fprintf(output, " %s\n", T(headers)[i]);
fprintf(output, "</head>\n"
"<body>\n");
/* print the compiled body */
mkd_generatehtml(mmiot, output);
for ( i=0; i < S(footers); i++ )
fprintf(output, "%s\n", T(footers)[i]);
fprintf(output, "</body>\n"
"</html>\n");
mkd_cleanup(mmiot);
exit(0);
}