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#include "node.h"
#include "syntax_extension.h"
#include "render.h"
#define OUT(s, wrap, escaping) renderer->out(renderer, node, s, wrap, escaping)
#define LIT(s) renderer->out(renderer, node, s, false, LITERAL)
#define CR() renderer->cr(renderer)
#define BLANKLINE() renderer->blankline(renderer)
#define LISTMARKER_SIZE 20
// Functions to convert cmark_nodes to plain text strings.
static CMARK_INLINE void outc(cmark_renderer *renderer, cmark_node *node,
cmark_escaping escape,
int32_t c, unsigned char nextc) {
cmark_render_code_point(renderer, c);
}
static int S_render_node(cmark_renderer *renderer, cmark_node *node,
cmark_event_type ev_type, int options) {
int list_number;
cmark_delim_type list_delim;
int i;
bool entering = (ev_type == CMARK_EVENT_ENTER);
char listmarker[LISTMARKER_SIZE];
bool first_in_list_item;
bufsize_t marker_width;
bool allow_wrap = renderer->width > 0 && !(CMARK_OPT_NOBREAKS & options) &&
!(CMARK_OPT_HARDBREAKS & options);
// Don't adjust tight list status til we've started the list.
// Otherwise we loose the blank line between a paragraph and
// a following list.
if (entering) {
if (node->parent && node->parent->type == CMARK_NODE_ITEM) {
renderer->in_tight_list_item = node->parent->parent->as.list.tight;
}
} else {
if (node->type == CMARK_NODE_LIST) {
renderer->in_tight_list_item =
node->parent &&
node->parent->type == CMARK_NODE_ITEM &&
node->parent->parent->as.list.tight;
}
}
if (node->extension && node->extension->plaintext_render_func) {
node->extension->plaintext_render_func(node->extension, renderer, node, ev_type, options);
return 1;
}
switch (node->type) {
case CMARK_NODE_DOCUMENT:
break;
case CMARK_NODE_BLOCK_QUOTE:
break;
case CMARK_NODE_LIST:
if (!entering && node->next && (node->next->type == CMARK_NODE_CODE_BLOCK ||
node->next->type == CMARK_NODE_LIST)) {
CR();
}
break;
case CMARK_NODE_ITEM:
if (cmark_node_get_list_type(node->parent) == CMARK_BULLET_LIST) {
marker_width = 4;
} else {
list_number = cmark_node_get_item_index(node);
list_delim = cmark_node_get_list_delim(node->parent);
// we ensure a width of at least 4 so
// we get nice transition from single digits
// to double
snprintf(listmarker, LISTMARKER_SIZE, "%d%s%s", list_number,
list_delim == CMARK_PAREN_DELIM ? ")" : ".",
list_number < 10 ? " " : " ");
marker_width = (bufsize_t)strlen(listmarker);
}
if (entering) {
if (cmark_node_get_list_type(node->parent) == CMARK_BULLET_LIST) {
LIT(" - ");
renderer->begin_content = true;
} else {
LIT(listmarker);
renderer->begin_content = true;
}
for (i = marker_width; i--;) {
cmark_strbuf_putc(renderer->prefix, ' ');
}
} else {
cmark_strbuf_truncate(renderer->prefix,
renderer->prefix->size - marker_width);
CR();
}
break;
case CMARK_NODE_HEADING:
if (entering) {
renderer->begin_content = true;
renderer->no_linebreaks = true;
} else {
renderer->no_linebreaks = false;
BLANKLINE();
}
break;
case CMARK_NODE_CODE_BLOCK:
first_in_list_item = node->prev == NULL && node->parent &&
node->parent->type == CMARK_NODE_ITEM;
if (!first_in_list_item) {
BLANKLINE();
}
OUT(cmark_node_get_literal(node), false, LITERAL);
BLANKLINE();
break;
case CMARK_NODE_HTML_BLOCK:
break;
case CMARK_NODE_CUSTOM_BLOCK:
break;
case CMARK_NODE_THEMATIC_BREAK:
BLANKLINE();
break;
case CMARK_NODE_PARAGRAPH:
if (!entering) {
BLANKLINE();
}
break;
case CMARK_NODE_TEXT:
OUT(cmark_node_get_literal(node), allow_wrap, NORMAL);
break;
case CMARK_NODE_LINEBREAK:
CR();
break;
case CMARK_NODE_SOFTBREAK:
if (CMARK_OPT_HARDBREAKS & options) {
CR();
} else if (!renderer->no_linebreaks && renderer->width == 0 &&
!(CMARK_OPT_HARDBREAKS & options) &&
!(CMARK_OPT_NOBREAKS & options)) {
CR();
} else {
OUT(" ", allow_wrap, LITERAL);
}
break;
case CMARK_NODE_CODE:
OUT(cmark_node_get_literal(node), allow_wrap, LITERAL);
break;
case CMARK_NODE_HTML_INLINE:
break;
case CMARK_NODE_CUSTOM_INLINE:
break;
case CMARK_NODE_STRONG:
break;
case CMARK_NODE_EMPH:
break;
case CMARK_NODE_LINK:
break;
case CMARK_NODE_IMAGE:
break;
case CMARK_NODE_FOOTNOTE_REFERENCE:
if (entering) {
LIT("[^");
OUT(cmark_chunk_to_cstr(renderer->mem, &node->as.literal), false, LITERAL);
LIT("]");
}
break;
case CMARK_NODE_FOOTNOTE_DEFINITION:
if (entering) {
renderer->footnote_ix += 1;
LIT("[^");
char n[32];
snprintf(n, sizeof(n), "%d", renderer->footnote_ix);
OUT(n, false, LITERAL);
LIT("]: ");
cmark_strbuf_puts(renderer->prefix, " ");
} else {
cmark_strbuf_truncate(renderer->prefix, renderer->prefix->size - 4);
}
break;
default:
assert(false);
break;
}
return 1;
}
char *cmark_render_plaintext(cmark_node *root, int options, int width) {
return cmark_render_plaintext_with_mem(root, options, width, cmark_node_mem(root));
}
char *cmark_render_plaintext_with_mem(cmark_node *root, int options, int width, cmark_mem *mem) {
if (options & CMARK_OPT_HARDBREAKS) {
// disable breaking on width, since it has
// a different meaning with OPT_HARDBREAKS
width = 0;
}
return cmark_render(mem, root, options, width, outc, S_render_node);
}
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