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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "cmark.h"
#include "buffer.h"
#include "node.h"
#define INDENT 2
static void print_str(strbuf* buffer, const unsigned char *s, int len)
{
int i;
if (len < 0)
len = strlen((char *)s);
strbuf_putc(buffer, '"');
for (i = 0; i < len; ++i) {
unsigned char c = s[i];
switch (c) {
case '\n':
strbuf_printf(buffer, "\\n");
break;
case '"':
strbuf_printf(buffer, "\\\"");
break;
case '\\':
strbuf_printf(buffer, "\\\\");
break;
default:
strbuf_putc(buffer, (int)c);
}
}
strbuf_putc(buffer, '"');
}
// Prettyprint an inline list, for debugging.
static void render_nodes(strbuf* buffer, cmark_node* node, int indent)
{
int i;
cmark_list *data;
while(node != NULL) {
for (i=0; i < indent; i++) {
strbuf_putc(buffer, ' ');
}
switch(node->type) {
case NODE_DOCUMENT:
break;
case NODE_BLOCK_QUOTE:
strbuf_printf(buffer, "block_quote\n");
break;
case NODE_LIST_ITEM:
strbuf_printf(buffer, "list_item\n");
break;
case NODE_LIST:
data = &(node->as.list);
if (data->list_type == CMARK_ORDERED_LIST) {
strbuf_printf(buffer, "list (type=ordered tight=%s start=%d delim=%s)\n",
(data->tight ? "true" : "false"),
data->start,
(data->delimiter == CMARK_PAREN_DELIM ? "parens" : "period"));
} else {
strbuf_printf(buffer, "list (type=bullet tight=%s bullet_char=%c)\n",
(data->tight ? "true" : "false"),
data->bullet_char);
}
break;
case NODE_HEADER:
strbuf_printf(buffer, "header (level=%d)\n", node->as.header.level);
break;
case NODE_PARAGRAPH:
strbuf_printf(buffer, "paragraph\n");
break;
case NODE_HRULE:
strbuf_printf(buffer, "hrule\n");
break;
case NODE_CODE_BLOCK:
strbuf_printf(buffer, "code_block info=");
print_str(buffer, node->as.code.info.data,
node->as.code.info.len);
strbuf_putc(buffer, ' ');
print_str(buffer, node->as.literal.data,
node->as.literal.len);
strbuf_putc(buffer, '\n');
break;
case NODE_HTML:
strbuf_printf(buffer, "html ");
print_str(buffer, node->as.literal.data,
node->as.literal.len);
strbuf_putc(buffer, '\n');
break;
case NODE_TEXT:
strbuf_printf(buffer, "text ");
print_str(buffer, node->as.literal.data, node->as.literal.len);
strbuf_putc(buffer, '\n');
break;
case NODE_LINEBREAK:
strbuf_printf(buffer, "linebreak\n");
break;
case NODE_SOFTBREAK:
strbuf_printf(buffer, "softbreak\n");
break;
case NODE_CODE:
strbuf_printf(buffer, "code ");
print_str(buffer, node->as.literal.data, node->as.literal.len);
strbuf_putc(buffer, '\n');
break;
case NODE_INLINE_HTML:
strbuf_printf(buffer, "inline_html ");
print_str(buffer, node->as.literal.data, node->as.literal.len);
strbuf_putc(buffer, '\n');
break;
case NODE_LINK:
case NODE_IMAGE:
strbuf_printf(buffer, "%s url=", node->type == NODE_LINK ? "link" : "image");
if (node->as.link.url)
print_str(buffer, node->as.link.url, -1);
if (node->as.link.title) {
strbuf_printf(buffer, " title=");
print_str(buffer, node->as.link.title, -1);
}
strbuf_putc(buffer, '\n');
break;
case NODE_STRONG:
strbuf_printf(buffer, "strong\n");
break;
case NODE_EMPH:
strbuf_printf(buffer, "emph\n");
break;
default:
break;
}
if (node->first_child) { // render children if any
indent += INDENT;
node = node->first_child;
} else if (node->next) { // otherwise render next sibling
node = node->next;
} else {
node = node->parent; // back up to parent
while (node) {
indent -= INDENT;
if (node->next) {
node = node->next;
break;
} else {
node = node->parent;
}
if (!node) {
break;
}
}
}
}
}
char *cmark_render_ast(cmark_node *root)
{
char* result;
strbuf buffer = GH_BUF_INIT;
render_nodes(&buffer, root, -2);
result = (char *)strbuf_detach(&buffer);
strbuf_free(&buffer);
return result;
}
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