| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 | /* mkd2man.c - man-page-formatted output from markdown text */
/*
* Copyright (c) 2009, Baptiste Daroussin and Natacha Porté
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "markdown.h"
#include <stdio.h>
#include <errno.h>
#include <string.h>
#define READ_UNIT 1024
#define OUTPUT_UNIT 64
/****************************
* MARKDOWN TO MAN RENDERER *
****************************/
void
man_text_escape(struct buf *ob, char *src, size_t size) {
size_t i = 0, org;
while (i < size) {
/* copying directly unescaped characters */
org = i;
while (i < size && src[i] != '-')
i += 1;
if (i > org) bufput(ob, src + org, i - org);
/* escaping */
if (i >= size) break;
else if (src[i] == '-') BUFPUTSL(ob, "\\-");
i += 1; } }
static void
man_blockcode(struct buf *ob, struct buf *text, void *opaque) {
if (ob->size) bufputc(ob, '\n');
BUFPUTSL(ob, ".nf\n");
if (text) man_text_escape(ob, text->data, text->size);
BUFPUTSL(ob, ".fi\n"); }
static int
man_codespan(struct buf *ob, struct buf *text, void *opaque) {
if (ob->size) bufputc(ob, '\n');
BUFPUTSL(ob, ".nf\n");
if (text) man_text_escape(ob, text->data, text->size);
BUFPUTSL(ob, ".fi\n");
return 1; }
static void
man_header(struct buf *ob, struct buf *text, int level, void *opaque) {
if (ob->size) bufputc(ob, '\n');
switch(level) {
case 1:
bufprintf(ob,".TH ");
break;
case 2:
bufprintf(ob, ".SH ");
break;
case 3:
bufprintf(ob, ".SS ");
break;
}
if (text) bufput(ob, text->data, text->size);
}
static int
man_double_emphasis(struct buf *ob, struct buf *text, char c, void *opaque) {
if (!text || !text->size) return 0;
BUFPUTSL(ob, "\\fB");
bufput(ob, text->data, text->size);
BUFPUTSL(ob, "\\fP");
return 1; }
static int
man_emphasis(struct buf *ob, struct buf *text, char c, void *opaque) {
if (!text || !text->size) return 0;
BUFPUTSL(ob, "\\fI");
if (text) bufput(ob, text->data, text->size);
BUFPUTSL(ob, "\\fP");
return 1; }
static int
man_linebreak(struct buf *ob, void *opaque) {
BUFPUTSL(ob, "\n.LP\n");
return 1; }
static void
man_paragraph(struct buf *ob, struct buf *text, void *opaque) {
if (ob->size) bufputc(ob, '\n');
BUFPUTSL(ob, ".TP\n");
if (text) bufput(ob, text->data, text->size);
BUFPUTSL(ob, "\n"); }
static void
man_list(struct buf *ob, struct buf *text, int flags, void *opaque) {
if (ob->size) bufputc(ob, '\n');
if (flags & MKD_LIST_ORDERED)
BUFPUTSL(ob,"\n.nr step 0 1\n");
else
BUFPUTSL(ob,".\n");
if (text) bufput(ob, text->data, text->size);
BUFPUTSL(ob, "\n"); }
static void
man_listitem(struct buf *ob, struct buf *text, int flags, void *opaque) {
if (flags & MKD_LIST_ORDERED)
BUFPUTSL(ob, ".IP \\n+[step]\n");
else
BUFPUTSL(ob, ".IP \\[bu] 2 \n");
if (text) {
while (text->size && text->data[text->size - 1] == '\n')
text->size -= 1;
bufput(ob, text->data, text->size); }
BUFPUTSL(ob, "\n"); }
static void
man_normal_text(struct buf *ob, struct buf *text, void *opaque) {
if (text) man_text_escape(ob, text->data, text->size); }
/* renderer structure */
struct mkd_renderer to_man = {
/* document-level callbacks */
NULL,
NULL,
/* block-level callbacks */
man_blockcode,
NULL,
NULL,
man_header,
NULL,
man_list,
man_listitem,
man_paragraph,
NULL,
NULL,
NULL,
/* span-level callbacks */
NULL,
man_codespan,
man_double_emphasis,
man_emphasis,
NULL,
man_linebreak,
NULL,
NULL,
NULL,
/* low-level callbacks */
NULL,
man_normal_text,
/* renderer data */
64,
"*_",
NULL };
/*****************
* MAIN FUNCTION *
*****************/
/* main • main function, interfacing STDIO with the parser */
int
main(int argc, char **argv) {
struct buf *ib, *ob;
size_t ret;
FILE *in = stdin;
/* opening the file if given from the command line */
if (argc > 1) {
in = fopen(argv[1], "r");
if (!in) {
fprintf(stderr,"Unable to open input file \"%s\": %s\n",
argv[1], strerror(errno));
return 1; } }
/* reading everything */
ib = bufnew(READ_UNIT);
bufgrow(ib, READ_UNIT);
while ((ret = fread(ib->data + ib->size, 1,
ib->asize - ib->size, in)) > 0) {
ib->size += ret;
bufgrow(ib, ib->size + READ_UNIT); }
if (in != stdin) fclose(in);
/* performing markdown to man */
ob = bufnew(OUTPUT_UNIT);
markdown(ob, ib, &to_man);
/* writing the result to stdout */
ret = fwrite(ob->data, 1, ob->size, stdout);
if (ret < ob->size)
fprintf(stderr, "Warning: only %zu output byte written, "
"out of %zu\n",
ret,
ob->size);
/* cleanup */
bufrelease(ib);
bufrelease(ob);
return 0; }
/* vim: set filetype=c: */
|