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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "config.h"
#include "cmark.h"
#include "node.h"
#include "buffer.h"
#include "utf8.h"
#include "render.h"
#define OUT(s, wrap, escaping) renderer->out(renderer, s, wrap, escaping)
#define LIT(s) renderer->out(renderer, s, false, LITERAL)
#define CR() renderer->cr(renderer)
#define BLANKLINE() renderer->blankline(renderer)
#define LIST_NUMBER_SIZE 20
// Functions to convert cmark_nodes to groff man strings.
static void S_outc(cmark_renderer *renderer, cmark_escaping escape, int32_t c,
unsigned char nextc) {
(void)(nextc);
if (escape == LITERAL) {
cmark_render_code_point(renderer, c);
return;
}
switch (c) {
case 46:
if (renderer->begin_line) {
cmark_render_ascii(renderer, "\\&.");
} else {
cmark_render_code_point(renderer, c);
}
break;
case 39:
if (renderer->begin_line) {
cmark_render_ascii(renderer, "\\&'");
} else {
cmark_render_code_point(renderer, c);
}
break;
case 45:
cmark_render_ascii(renderer, "\\-");
break;
case 92:
cmark_render_ascii(renderer, "\\e");
break;
case 8216: // left single quote
cmark_render_ascii(renderer, "\\[oq]");
break;
case 8217: // right single quote
cmark_render_ascii(renderer, "\\[cq]");
break;
case 8220: // left double quote
cmark_render_ascii(renderer, "\\[lq]");
break;
case 8221: // right double quote
cmark_render_ascii(renderer, "\\[rq]");
break;
case 8212: // em dash
cmark_render_ascii(renderer, "\\[em]");
break;
case 8211: // en dash
cmark_render_ascii(renderer, "\\[en]");
break;
default:
cmark_render_code_point(renderer, c);
}
}
static int S_render_node(cmark_renderer *renderer, cmark_node *node,
cmark_event_type ev_type, int options) {
cmark_node *tmp;
int list_number;
bool entering = (ev_type == CMARK_EVENT_ENTER);
bool allow_wrap = renderer->width > 0 && !(CMARK_OPT_NOBREAKS & options);
// avoid unused parameter error:
(void)(options);
switch (node->type) {
case CMARK_NODE_DOCUMENT:
break;
case CMARK_NODE_BLOCK_QUOTE:
if (entering) {
CR();
LIT(".RS");
CR();
} else {
CR();
LIT(".RE");
CR();
}
break;
case CMARK_NODE_LIST:
break;
case CMARK_NODE_ITEM:
if (entering) {
CR();
LIT(".IP ");
if (cmark_node_get_list_type(node->parent) == CMARK_BULLET_LIST) {
LIT("\\[bu] 2");
} else {
list_number = cmark_node_get_list_start(node->parent);
tmp = node;
while (tmp->prev) {
tmp = tmp->prev;
list_number += 1;
}
char list_number_s[LIST_NUMBER_SIZE];
snprintf(list_number_s, LIST_NUMBER_SIZE, "\"%d.\" 4", list_number);
LIT(list_number_s);
}
CR();
} else {
CR();
}
break;
case CMARK_NODE_HEADING:
if (entering) {
CR();
LIT(cmark_node_get_heading_level(node) == 1 ? ".SH" : ".SS");
CR();
} else {
CR();
}
break;
case CMARK_NODE_CODE_BLOCK:
CR();
LIT(".IP\n.nf\n\\f[C]\n");
OUT(cmark_node_get_literal(node), false, NORMAL);
CR();
LIT("\\f[]\n.fi");
CR();
break;
case CMARK_NODE_HTML_BLOCK:
break;
case CMARK_NODE_CUSTOM_BLOCK:
CR();
OUT(entering ? cmark_node_get_on_enter(node) : cmark_node_get_on_exit(node),
false, LITERAL);
CR();
break;
case CMARK_NODE_THEMATIC_BREAK:
CR();
LIT(".PP\n * * * * *");
CR();
break;
case CMARK_NODE_PARAGRAPH:
if (entering) {
// no blank line if first paragraph in list:
if (node->parent && node->parent->type == CMARK_NODE_ITEM &&
node->prev == NULL) {
// no blank line or .PP
} else {
CR();
LIT(".PP");
CR();
}
} else {
CR();
}
break;
case CMARK_NODE_TEXT:
OUT(cmark_node_get_literal(node), allow_wrap, NORMAL);
break;
case CMARK_NODE_LINEBREAK:
LIT(".PD 0\n.P\n.PD");
CR();
break;
case CMARK_NODE_SOFTBREAK:
if (options & CMARK_OPT_HARDBREAKS) {
LIT(".PD 0\n.P\n.PD");
CR();
} else if (renderer->width == 0 && !(CMARK_OPT_NOBREAKS & options)) {
CR();
} else {
OUT(" ", allow_wrap, LITERAL);
}
break;
case CMARK_NODE_CODE:
LIT("\\f[C]");
OUT(cmark_node_get_literal(node), allow_wrap, NORMAL);
LIT("\\f[]");
break;
case CMARK_NODE_HTML_INLINE:
break;
case CMARK_NODE_CUSTOM_INLINE:
OUT(entering ? cmark_node_get_on_enter(node) : cmark_node_get_on_exit(node),
false, LITERAL);
break;
case CMARK_NODE_STRONG:
if (entering) {
LIT("\\f[B]");
} else {
LIT("\\f[]");
}
break;
case CMARK_NODE_EMPH:
if (entering) {
LIT("\\f[I]");
} else {
LIT("\\f[]");
}
break;
case CMARK_NODE_LINK:
if (!entering) {
LIT(" (");
OUT(cmark_node_get_url(node), allow_wrap, URL);
LIT(")");
}
break;
case CMARK_NODE_IMAGE:
if (entering) {
LIT("[IMAGE: ");
} else {
LIT("]");
}
break;
default:
assert(false);
break;
}
return 1;
}
char *cmark_render_man(cmark_node *root, int options, int width) {
return cmark_render(root, options, width, S_outc, S_render_node);
}
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