static int
discount_link(struct buf *ob, struct buf *link, struct buf *title,
struct buf *content, void *opaque) {
if (!link) return rndr_link(ob, link, title, content, opaque);
else if (link->size > 5 && !strncasecmp(link->data, "abbr:", 5)) {
BUFPUTSL(ob, "<abbr title=\"");
lus_attr_escape(ob, link->data + 5, link->size - 5);
BUFPUTSL(ob, "\">");
bufput(ob, content->data, content->size);
BUFPUTSL(ob, "</abbr>");
return 1; }
else if (link->size > 6 && !strncasecmp(link->data, "class:", 6)) {
BUFPUTSL(ob, "<span class=\"");
lus_attr_escape(ob, link->data + 6, link->size - 6);
BUFPUTSL(ob, "\">");
bufput(ob, content->data, content->size);
BUFPUTSL(ob, "</span>");
return 1; }
else if (link->size > 3 && !strncasecmp(link->data, "id:", 3)) {
BUFPUTSL(ob, "<span id=\"");
lus_attr_escape(ob, link->data + 3, link->size - 3);
BUFPUTSL(ob, "\">");
bufput(ob, content->data, content->size);
BUFPUTSL(ob, "</span>");
return 1; }
else if (link->size > 4 && !strncasecmp(link->data, "raw:", 4)) {
bufput(ob, link->data + 4, link->size - 4);
return 1; }
return rndr_link(ob, link, title, content, opaque); }
static int
rndr_link(struct buf *ob, struct buf *link, struct buf *title,
struct buf *content, void *opaque) {
BUFPUTSL(ob, "<a href=\"");
if (link && link->size) lus_attr_escape(ob, link->data, link->size);
if (title && title->size) {
BUFPUTSL(ob, "\" title=\"");
lus_attr_escape(ob, title->data, title->size); }
BUFPUTSL(ob, "\">");
if (content && content->size) bufput(ob, content->data, content->size);
BUFPUTSL(ob, "</a>");
return 1; }
static int
xhtml_image(struct buf *ob, struct buf *link, struct buf *title,
struct buf *alt, void *opaque) {
if (!link || !link->size) return 0;
BUFPUTSL(ob, "<img src=\"");
lus_attr_escape(ob, link->data, link->size);
BUFPUTSL(ob, "\" alt=\"");
if (alt && alt->size)
lus_attr_escape(ob, alt->data, alt->size);
if (title && title->size) {
BUFPUTSL(ob, "\" title=\"");
lus_attr_escape(ob, title->data, title->size); }
BUFPUTSL(ob, "\" />");
return 1; }
static int
rndr_autolink(struct buf *ob, struct buf *link, enum mkd_autolink type,
void *opaque) {
if (!link || !link->size) return 0;
BUFPUTSL(ob, "<a href=\"");
if (type == MKDA_IMPLICIT_EMAIL) BUFPUTSL(ob, "mailto:");
lus_attr_escape(ob, link->data, link->size);
BUFPUTSL(ob, "\">");
if (type == MKDA_EXPLICIT_EMAIL && link->size > 7)
lus_attr_escape(ob, link->data + 7, link->size - 7);
else lus_attr_escape(ob, link->data, link->size);
BUFPUTSL(ob, "</a>");
return 1;
}
static int
discount_image(struct buf *ob, struct buf *link, struct buf *title,
struct buf *alt, int xhtml) {
if (!link || !link->size) return 0;
BUFPUTSL(ob, "<img src=\"");
if (!print_link_wxh(ob, link)) {
lus_attr_escape(ob, link->data, link->size);
bufputc(ob, '"'); }
BUFPUTSL(ob, " alt=\"");
if (alt && alt->size)
lus_attr_escape(ob, alt->data, alt->size);
if (title && title->size) {
BUFPUTSL(ob, "\" title=\"");
lus_attr_escape(ob, title->data, title->size); }
bufputs(ob, xhtml ? "\" />" : "\">");
return 1; }
static int
print_link_wxh(struct buf *ob, struct buf *link) {
size_t eq, ex, end;
if (link->size < 1) return 0;
eq = link->size - 1;
while (eq > 0 && (link->data[eq - 1] != ' ' || link->data[eq] != '='))
eq -= 1;
if (!eq) return 0;
ex = eq + 1;
while (ex < link->size
&& link->data[ex] >= '0' && link->data[ex] <= '9')
ex += 1;
if (ex >= link->size || ex == eq + 1 || link->data[ex] != 'x') return 0;
end = ex + 1;
while (end < link->size
&& link->data[end] >= '0' && link->data[end] <= '9')
end += 1;
if (end == ex + 1) return 0;
/* everything is fine, proceeding to actual printing */
lus_attr_escape(ob, link->data, eq - 1);
BUFPUTSL(ob, "\" width=");
bufput(ob, link->data + eq + 1, ex - eq - 1);
BUFPUTSL(ob, " height=");
bufput(ob, link->data + ex + 1, end - ex - 1);
return 1; }
static int
rndr_codespan(struct buf *ob, struct buf *text, void *opaque) {
BUFPUTSL(ob, "<code>");
if (text) lus_attr_escape(ob, text->data, text->size);
BUFPUTSL(ob, "</code>");
return 1;
}
static void
rndr_blockcode(struct buf *ob, struct buf *text, void *opaque) {
if (ob->size) bufputc(ob, '\n');
BUFPUTSL(ob, "<pre><code>");
if (text) lus_attr_escape(ob, text->data, text->size);
BUFPUTSL(ob, "</code></pre>\n");
}
static int
rndr_raw_html(struct buf *ob, struct buf *text, void *opaque) {
unsigned int flags = *(unsigned int *)opaque;
int escape_html = 0;
if (flags & RENDER_SKIP_HTML)
escape_html = 1;
else if ((flags & RENDER_SKIP_STYLE) != 0 && is_html_tag(text, "<style>"))
escape_html = 1;
else if ((flags & RENDER_SKIP_LINKS) != 0 && is_html_tag(text, "<a>"))
escape_html = 1;
else if ((flags & RENDER_SKIP_IMAGES) != 0 && is_html_tag(text, "<img>"))
escape_html = 1;
if (escape_html)
lus_attr_escape(ob, text->data, text->size);
else
bufput(ob, text->data, text->size);
return 1;
}
static void
rndr_normal_text(struct buf *ob, struct buf *text, void *opaque) {
unsigned int flags = *(unsigned int *)opaque;
if (!text)
return;
if (flags & RENDER_SMARTYPANTS)
smartypants(ob, text);
else
lus_attr_escape(ob, text->data, text->size);
}
