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#include <stdlib.h>
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <assert.h>
#include "stmd.h"
#include "debug.h"
#include "html/houdini.h"
// Functions to convert block and inline lists to HTML strings.
static void escape_html(gh_buf *dest, const unsigned char *source, int length)
{
if (length < 0)
length = strlen((char *)source);
houdini_escape_html0(dest, source, (size_t)length, 0);
}
static void escape_href(gh_buf *dest, const unsigned char *source, int length)
{
if (length < 0)
length = strlen((char *)source);
houdini_escape_href(dest, source, (size_t)length);
}
static inline void cr(gh_buf *html)
{
if (html->size && html->ptr[html->size - 1] != '\n')
gh_buf_putc(html, '\n');
}
// Convert a block list to HTML. Returns 0 on success, and sets result.
void blocks_to_html(gh_buf *html, block *b, bool tight)
{
struct ListData *data;
while(b != NULL) {
switch(b->tag) {
case document:
blocks_to_html(html, b->children, false);
break;
case paragraph:
if (tight) {
inlines_to_html(html, b->inline_content);
} else {
cr(html);
gh_buf_puts(html, "<p>");
inlines_to_html(html, b->inline_content);
gh_buf_puts(html, "</p>");
cr(html);
}
break;
case block_quote:
cr(html);
gh_buf_puts(html, "<blockquote>");
blocks_to_html(html, b->children, false);
gh_buf_puts(html, "</blockquote>");
cr(html);
break;
case list_item:
cr(html);
gh_buf_puts(html, "<li>");
blocks_to_html(html, b->children, tight);
gh_buf_trim(html); /* TODO: rtrim */
gh_buf_puts(html, "</li>");
cr(html);
break;
case list:
// make sure a list starts at the beginning of the line:
cr(html);
data = &(b->attributes.list_data);
if (data->start > 1) {
gh_buf_printf(html, "<%s start=\"%d\">\n",
data->list_type == bullet ? "ul" : "ol",
data->start);
} else {
gh_buf_puts(html, data->list_type == bullet ? "<ul>\n" : "<ol>\n");
}
blocks_to_html(html, b->children, data->tight);
gh_buf_puts(html, data->list_type == bullet ? "</ul>" : "</ol>");
cr(html);
break;
case atx_header:
case setext_header:
cr(html);
gh_buf_printf(html, "<h%d>", b->attributes.header_level);
inlines_to_html(html, b->inline_content);
gh_buf_printf(html, "</h%d>", b->attributes.header_level);
cr(html);
break;
case indented_code:
case fenced_code:
cr(html);
gh_buf_puts(html, "<pre");
if (b->tag == fenced_code) {
gh_buf *info = &b->attributes.fenced_code_data.info;
if (gh_buf_len(info) > 0) {
int first_tag = gh_buf_strchr(info, ' ', 0);
if (first_tag < 0)
first_tag = gh_buf_len(info);
gh_buf_puts(html, " class=\"");
escape_html(html, info->ptr, first_tag);
gh_buf_putc(html, '"');
}
}
gh_buf_puts(html, "><code>");
escape_html(html, b->string_content.ptr, b->string_content.size);
gh_buf_puts(html, "</code></pre>");
cr(html);
break;
case html_block:
gh_buf_put(html, b->string_content.ptr, b->string_content.size);
break;
case hrule:
gh_buf_puts(html, "<hr />");
cr(html);
break;
case reference_def:
break;
default:
assert(false);
}
b = b->next;
}
}
// Convert an inline list to HTML. Returns 0 on success, and sets result.
void inlines_to_html(gh_buf *html, inl* ils)
{
gh_buf scrap = GH_BUF_INIT;
while(ils != NULL) {
switch(ils->tag) {
case INL_STRING:
escape_html(html, ils->content.literal.data, ils->content.literal.len);
break;
case INL_LINEBREAK:
gh_buf_puts(html, "<br />\n");
break;
case INL_SOFTBREAK:
gh_buf_putc(html, '\n');
break;
case INL_CODE:
gh_buf_puts(html, "<code>");
escape_html(html, ils->content.literal.data, ils->content.literal.len);
gh_buf_puts(html, "</code>");
break;
case INL_RAW_HTML:
case INL_ENTITY:
gh_buf_put(html,
ils->content.literal.data,
ils->content.literal.len);
break;
case INL_LINK:
gh_buf_puts(html, "<a href=\"");
escape_href(html, ils->content.linkable.url, -1);
if (ils->content.linkable.title) {
gh_buf_puts(html, "\" title=\"");
escape_html(html, ils->content.linkable.title, -1);
}
gh_buf_puts(html, "\">");
inlines_to_html(html, ils->content.inlines);
gh_buf_puts(html, "</a>");
break;
case INL_IMAGE:
gh_buf_puts(html, "<img src=\"");
escape_href(html, ils->content.linkable.url, -1);
inlines_to_html(&scrap, ils->content.inlines);
if (scrap.size) {
gh_buf_puts(html, "\" alt=\"");
escape_html(html, scrap.ptr, scrap.size);
}
gh_buf_clear(&scrap);
if (ils->content.linkable.title) {
gh_buf_puts(html, "\" title=\"");
escape_html(html, ils->content.linkable.title, -1);
}
gh_buf_puts(html, "\"/>");
break;
case INL_STRONG:
gh_buf_puts(html, "<strong>");
inlines_to_html(html, ils->content.inlines);
gh_buf_puts(html, "</strong>");
break;
case INL_EMPH:
gh_buf_puts(html, "<em>");
inlines_to_html(html, ils->content.inlines);
gh_buf_puts(html, "</em>");
break;
}
ils = ils->next;
}
}
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