summaryrefslogtreecommitdiff
path: root/src/html.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/html.c')
-rw-r--r--src/html.c598
1 files changed, 289 insertions, 309 deletions
diff --git a/src/html.c b/src/html.c
index 7c4548d..e365c8c 100644
--- a/src/html.c
+++ b/src/html.c
@@ -12,324 +12,304 @@
// Functions to convert cmark_nodes to HTML strings.
-static void escape_html(cmark_strbuf *dest, const unsigned char *source, bufsize_t length)
-{
- houdini_escape_html0(dest, source, length, 0);
+static void escape_html(cmark_strbuf *dest, const unsigned char *source,
+ bufsize_t length) {
+ houdini_escape_html0(dest, source, length, 0);
}
-static inline void cr(cmark_strbuf *html)
-{
- if (html->size && html->ptr[html->size - 1] != '\n')
- cmark_strbuf_putc(html, '\n');
+static inline void cr(cmark_strbuf *html) {
+ if (html->size && html->ptr[html->size - 1] != '\n')
+ cmark_strbuf_putc(html, '\n');
}
struct render_state {
- cmark_strbuf* html;
- cmark_node *plain;
+ cmark_strbuf *html;
+ cmark_node *plain;
};
-static void
-S_render_sourcepos(cmark_node *node, cmark_strbuf *html, int options)
-{
- char buffer[100];
- if (CMARK_OPT_SOURCEPOS & options) {
- sprintf(buffer, " data-sourcepos=\"%d:%d-%d:%d\"",
- cmark_node_get_start_line(node),
- cmark_node_get_start_column(node),
- cmark_node_get_end_line(node),
- cmark_node_get_end_column(node));
- cmark_strbuf_puts(html, buffer);
- }
+static void S_render_sourcepos(cmark_node *node, cmark_strbuf *html,
+ int options) {
+ char buffer[100];
+ if (CMARK_OPT_SOURCEPOS & options) {
+ sprintf(buffer, " data-sourcepos=\"%d:%d-%d:%d\"",
+ cmark_node_get_start_line(node), cmark_node_get_start_column(node),
+ cmark_node_get_end_line(node), cmark_node_get_end_column(node));
+ cmark_strbuf_puts(html, buffer);
+ }
}
-static int
-S_render_node(cmark_node *node, cmark_event_type ev_type,
- struct render_state *state, int options)
-{
- cmark_node *parent;
- cmark_node *grandparent;
- cmark_strbuf *html = state->html;
- char start_header[] = "<h0";
- char end_header[] = "</h0";
- bool tight;
- char buffer[100];
-
- bool entering = (ev_type == CMARK_EVENT_ENTER);
-
- if (state->plain == node) { // back at original node
- state->plain = NULL;
- }
-
- if (state->plain != NULL) {
- switch(node->type) {
- case CMARK_NODE_TEXT:
- case CMARK_NODE_CODE:
- case CMARK_NODE_INLINE_HTML:
- escape_html(html, node->as.literal.data,
- node->as.literal.len);
- break;
-
- case CMARK_NODE_LINEBREAK:
- case CMARK_NODE_SOFTBREAK:
- cmark_strbuf_putc(html, ' ');
- break;
-
- default:
- break;
- }
- return 1;
- }
-
- switch (node->type) {
- case CMARK_NODE_DOCUMENT:
- break;
-
- case CMARK_NODE_BLOCK_QUOTE:
- if (entering) {
- cr(html);
- cmark_strbuf_puts(html, "<blockquote");
- S_render_sourcepos(node, html, options);
- cmark_strbuf_puts(html, ">\n");
- } else {
- cr(html);
- cmark_strbuf_puts(html, "</blockquote>\n");
- }
- break;
-
- case CMARK_NODE_LIST: {
- cmark_list_type list_type = node->as.list.list_type;
- int start = node->as.list.start;
-
- if (entering) {
- cr(html);
- if (list_type == CMARK_BULLET_LIST) {
- cmark_strbuf_puts(html, "<ul");
- S_render_sourcepos(node, html, options);
- cmark_strbuf_puts(html, ">\n");
- } else if (start == 1) {
- cmark_strbuf_puts(html, "<ol");
- S_render_sourcepos(node, html, options);
- cmark_strbuf_puts(html, ">\n");
- } else {
- sprintf(buffer, "<ol start=\"%d\"", start);
- cmark_strbuf_puts(html, buffer);
- S_render_sourcepos(node, html, options);
- cmark_strbuf_puts(html, ">\n");
- }
- } else {
- cmark_strbuf_puts(html,
- list_type == CMARK_BULLET_LIST ?
- "</ul>\n" : "</ol>\n");
- }
- break;
- }
-
- case CMARK_NODE_ITEM:
- if (entering) {
- cr(html);
- cmark_strbuf_puts(html, "<li");
- S_render_sourcepos(node, html, options);
- cmark_strbuf_putc(html, '>');
- } else {
- cmark_strbuf_puts(html, "</li>\n");
- }
- break;
-
- case CMARK_NODE_HEADER:
- if (entering) {
- cr(html);
- start_header[2] = '0' + node->as.header.level;
- cmark_strbuf_puts(html, start_header);
- S_render_sourcepos(node, html, options);
- cmark_strbuf_putc(html, '>');
- } else {
- end_header[3] = '0' + node->as.header.level;
- cmark_strbuf_puts(html, end_header);
- cmark_strbuf_puts(html, ">\n");
- }
- break;
-
- case CMARK_NODE_CODE_BLOCK:
- cr(html);
-
- if (!node->as.code.fenced || node->as.code.info.len == 0) {
- cmark_strbuf_puts(html, "<pre");
- S_render_sourcepos(node, html, options);
- cmark_strbuf_puts(html, "><code>");
- } else {
- bufsize_t first_tag = 0;
- while (first_tag < node->as.code.info.len &&
- !cmark_isspace(node->as.code.info.data[first_tag])) {
- first_tag += 1;
- }
-
- cmark_strbuf_puts(html, "<pre");
- S_render_sourcepos(node, html, options);
- cmark_strbuf_puts(html, "><code class=\"language-");
- escape_html(html, node->as.code.info.data, first_tag);
- cmark_strbuf_puts(html, "\">");
- }
-
- escape_html(html, node->as.code.literal.data,
- node->as.code.literal.len);
- cmark_strbuf_puts(html, "</code></pre>\n");
- break;
-
- case CMARK_NODE_HTML:
- cr(html);
- if (options & CMARK_OPT_SAFE) {
- cmark_strbuf_puts(html, "<!-- raw HTML omitted -->");
- } else {
- cmark_strbuf_put(html, node->as.literal.data,
- node->as.literal.len);
- }
- cr(html);
- break;
-
- case CMARK_NODE_HRULE:
- cr(html);
- cmark_strbuf_puts(html, "<hr");
- S_render_sourcepos(node, html, options);
- cmark_strbuf_puts(html, " />\n");
- break;
-
- case CMARK_NODE_PARAGRAPH:
- parent = cmark_node_parent(node);
- grandparent = cmark_node_parent(parent);
- if (grandparent != NULL &&
- grandparent->type == CMARK_NODE_LIST) {
- tight = grandparent->as.list.tight;
- } else {
- tight = false;
- }
- if (!tight) {
- if (entering) {
- cr(html);
- cmark_strbuf_puts(html, "<p");
- S_render_sourcepos(node, html, options);
- cmark_strbuf_putc(html, '>');
- } else {
- cmark_strbuf_puts(html, "</p>\n");
- }
- }
- break;
-
- case CMARK_NODE_TEXT:
- escape_html(html, node->as.literal.data, node->as.literal.len);
- break;
-
- case CMARK_NODE_LINEBREAK:
- cmark_strbuf_puts(html, "<br />\n");
- break;
-
- case CMARK_NODE_SOFTBREAK:
- if (options & CMARK_OPT_HARDBREAKS) {
- cmark_strbuf_puts(html, "<br />\n");
- } else {
- cmark_strbuf_putc(html, '\n');
- }
- break;
-
- case CMARK_NODE_CODE:
- cmark_strbuf_puts(html, "<code>");
- escape_html(html, node->as.literal.data, node->as.literal.len);
- cmark_strbuf_puts(html, "</code>");
- break;
-
- case CMARK_NODE_INLINE_HTML:
- if (options & CMARK_OPT_SAFE) {
- cmark_strbuf_puts(html, "<!-- raw HTML omitted -->");
- } else {
- cmark_strbuf_put(html, node->as.literal.data,
- node->as.literal.len);
- }
- break;
-
- case CMARK_NODE_STRONG:
- if (entering) {
- cmark_strbuf_puts(html, "<strong>");
- } else {
- cmark_strbuf_puts(html, "</strong>");
- }
- break;
-
- case CMARK_NODE_EMPH:
- if (entering) {
- cmark_strbuf_puts(html, "<em>");
- } else {
- cmark_strbuf_puts(html, "</em>");
- }
- break;
-
- case CMARK_NODE_LINK:
- if (entering) {
- cmark_strbuf_puts(html, "<a href=\"");
- if (!((options & CMARK_OPT_SAFE) &&
- scan_dangerous_url(&node->as.link.url, 0))) {
- houdini_escape_href(html,
- node->as.link.url.data,
- node->as.link.url.len);
-
- }
- if (node->as.link.title.len) {
- cmark_strbuf_puts(html, "\" title=\"");
- escape_html(html,
- node->as.link.title.data,
- node->as.link.title.len);
- }
- cmark_strbuf_puts(html, "\">");
- } else {
- cmark_strbuf_puts(html, "</a>");
- }
- break;
-
- case CMARK_NODE_IMAGE:
- if (entering) {
- cmark_strbuf_puts(html, "<img src=\"");
- if (!((options & CMARK_OPT_SAFE) &&
- scan_dangerous_url(&node->as.link.url, 0))) {
- houdini_escape_href(html,
- node->as.link.url.data,
- node->as.link.url.len);
-
- }
- cmark_strbuf_puts(html, "\" alt=\"");
- state->plain = node;
- } else {
- if (node->as.link.title.len) {
- cmark_strbuf_puts(html, "\" title=\"");
- escape_html(html, node->as.link.title.data,
- node->as.link.title.len);
- }
-
- cmark_strbuf_puts(html, "\" />");
- }
- break;
-
- default:
- assert(false);
- break;
- }
-
- // cmark_strbuf_putc(html, 'x');
- return 1;
+static int S_render_node(cmark_node *node, cmark_event_type ev_type,
+ struct render_state *state, int options) {
+ cmark_node *parent;
+ cmark_node *grandparent;
+ cmark_strbuf *html = state->html;
+ char start_header[] = "<h0";
+ char end_header[] = "</h0";
+ bool tight;
+ char buffer[100];
+
+ bool entering = (ev_type == CMARK_EVENT_ENTER);
+
+ if (state->plain == node) { // back at original node
+ state->plain = NULL;
+ }
+
+ if (state->plain != NULL) {
+ switch (node->type) {
+ case CMARK_NODE_TEXT:
+ case CMARK_NODE_CODE:
+ case CMARK_NODE_INLINE_HTML:
+ escape_html(html, node->as.literal.data, node->as.literal.len);
+ break;
+
+ case CMARK_NODE_LINEBREAK:
+ case CMARK_NODE_SOFTBREAK:
+ cmark_strbuf_putc(html, ' ');
+ break;
+
+ default:
+ break;
+ }
+ return 1;
+ }
+
+ switch (node->type) {
+ case CMARK_NODE_DOCUMENT:
+ break;
+
+ case CMARK_NODE_BLOCK_QUOTE:
+ if (entering) {
+ cr(html);
+ cmark_strbuf_puts(html, "<blockquote");
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_puts(html, ">\n");
+ } else {
+ cr(html);
+ cmark_strbuf_puts(html, "</blockquote>\n");
+ }
+ break;
+
+ case CMARK_NODE_LIST: {
+ cmark_list_type list_type = node->as.list.list_type;
+ int start = node->as.list.start;
+
+ if (entering) {
+ cr(html);
+ if (list_type == CMARK_BULLET_LIST) {
+ cmark_strbuf_puts(html, "<ul");
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_puts(html, ">\n");
+ } else if (start == 1) {
+ cmark_strbuf_puts(html, "<ol");
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_puts(html, ">\n");
+ } else {
+ sprintf(buffer, "<ol start=\"%d\"", start);
+ cmark_strbuf_puts(html, buffer);
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_puts(html, ">\n");
+ }
+ } else {
+ cmark_strbuf_puts(html,
+ list_type == CMARK_BULLET_LIST ? "</ul>\n" : "</ol>\n");
+ }
+ break;
+ }
+
+ case CMARK_NODE_ITEM:
+ if (entering) {
+ cr(html);
+ cmark_strbuf_puts(html, "<li");
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_putc(html, '>');
+ } else {
+ cmark_strbuf_puts(html, "</li>\n");
+ }
+ break;
+
+ case CMARK_NODE_HEADER:
+ if (entering) {
+ cr(html);
+ start_header[2] = '0' + node->as.header.level;
+ cmark_strbuf_puts(html, start_header);
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_putc(html, '>');
+ } else {
+ end_header[3] = '0' + node->as.header.level;
+ cmark_strbuf_puts(html, end_header);
+ cmark_strbuf_puts(html, ">\n");
+ }
+ break;
+
+ case CMARK_NODE_CODE_BLOCK:
+ cr(html);
+
+ if (!node->as.code.fenced || node->as.code.info.len == 0) {
+ cmark_strbuf_puts(html, "<pre");
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_puts(html, "><code>");
+ } else {
+ bufsize_t first_tag = 0;
+ while (first_tag < node->as.code.info.len &&
+ !cmark_isspace(node->as.code.info.data[first_tag])) {
+ first_tag += 1;
+ }
+
+ cmark_strbuf_puts(html, "<pre");
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_puts(html, "><code class=\"language-");
+ escape_html(html, node->as.code.info.data, first_tag);
+ cmark_strbuf_puts(html, "\">");
+ }
+
+ escape_html(html, node->as.code.literal.data, node->as.code.literal.len);
+ cmark_strbuf_puts(html, "</code></pre>\n");
+ break;
+
+ case CMARK_NODE_HTML:
+ cr(html);
+ if (options & CMARK_OPT_SAFE) {
+ cmark_strbuf_puts(html, "<!-- raw HTML omitted -->");
+ } else {
+ cmark_strbuf_put(html, node->as.literal.data, node->as.literal.len);
+ }
+ cr(html);
+ break;
+
+ case CMARK_NODE_HRULE:
+ cr(html);
+ cmark_strbuf_puts(html, "<hr");
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_puts(html, " />\n");
+ break;
+
+ case CMARK_NODE_PARAGRAPH:
+ parent = cmark_node_parent(node);
+ grandparent = cmark_node_parent(parent);
+ if (grandparent != NULL && grandparent->type == CMARK_NODE_LIST) {
+ tight = grandparent->as.list.tight;
+ } else {
+ tight = false;
+ }
+ if (!tight) {
+ if (entering) {
+ cr(html);
+ cmark_strbuf_puts(html, "<p");
+ S_render_sourcepos(node, html, options);
+ cmark_strbuf_putc(html, '>');
+ } else {
+ cmark_strbuf_puts(html, "</p>\n");
+ }
+ }
+ break;
+
+ case CMARK_NODE_TEXT:
+ escape_html(html, node->as.literal.data, node->as.literal.len);
+ break;
+
+ case CMARK_NODE_LINEBREAK:
+ cmark_strbuf_puts(html, "<br />\n");
+ break;
+
+ case CMARK_NODE_SOFTBREAK:
+ if (options & CMARK_OPT_HARDBREAKS) {
+ cmark_strbuf_puts(html, "<br />\n");
+ } else {
+ cmark_strbuf_putc(html, '\n');
+ }
+ break;
+
+ case CMARK_NODE_CODE:
+ cmark_strbuf_puts(html, "<code>");
+ escape_html(html, node->as.literal.data, node->as.literal.len);
+ cmark_strbuf_puts(html, "</code>");
+ break;
+
+ case CMARK_NODE_INLINE_HTML:
+ if (options & CMARK_OPT_SAFE) {
+ cmark_strbuf_puts(html, "<!-- raw HTML omitted -->");
+ } else {
+ cmark_strbuf_put(html, node->as.literal.data, node->as.literal.len);
+ }
+ break;
+
+ case CMARK_NODE_STRONG:
+ if (entering) {
+ cmark_strbuf_puts(html, "<strong>");
+ } else {
+ cmark_strbuf_puts(html, "</strong>");
+ }
+ break;
+
+ case CMARK_NODE_EMPH:
+ if (entering) {
+ cmark_strbuf_puts(html, "<em>");
+ } else {
+ cmark_strbuf_puts(html, "</em>");
+ }
+ break;
+
+ case CMARK_NODE_LINK:
+ if (entering) {
+ cmark_strbuf_puts(html, "<a href=\"");
+ if (!((options & CMARK_OPT_SAFE) &&
+ scan_dangerous_url(&node->as.link.url, 0))) {
+ houdini_escape_href(html, node->as.link.url.data,
+ node->as.link.url.len);
+ }
+ if (node->as.link.title.len) {
+ cmark_strbuf_puts(html, "\" title=\"");
+ escape_html(html, node->as.link.title.data, node->as.link.title.len);
+ }
+ cmark_strbuf_puts(html, "\">");
+ } else {
+ cmark_strbuf_puts(html, "</a>");
+ }
+ break;
+
+ case CMARK_NODE_IMAGE:
+ if (entering) {
+ cmark_strbuf_puts(html, "<img src=\"");
+ if (!((options & CMARK_OPT_SAFE) &&
+ scan_dangerous_url(&node->as.link.url, 0))) {
+ houdini_escape_href(html, node->as.link.url.data,
+ node->as.link.url.len);
+ }
+ cmark_strbuf_puts(html, "\" alt=\"");
+ state->plain = node;
+ } else {
+ if (node->as.link.title.len) {
+ cmark_strbuf_puts(html, "\" title=\"");
+ escape_html(html, node->as.link.title.data, node->as.link.title.len);
+ }
+
+ cmark_strbuf_puts(html, "\" />");
+ }
+ break;
+
+ default:
+ assert(false);
+ break;
+ }
+
+ // cmark_strbuf_putc(html, 'x');
+ return 1;
}
-char *cmark_render_html(cmark_node *root, int options)
-{
- char *result;
- cmark_strbuf html = GH_BUF_INIT;
- cmark_event_type ev_type;
- cmark_node *cur;
- struct render_state state = { &html, NULL };
- cmark_iter *iter = cmark_iter_new(root);
-
- while ((ev_type = cmark_iter_next(iter)) != CMARK_EVENT_DONE) {
- cur = cmark_iter_get_node(iter);
- S_render_node(cur, ev_type, &state, options);
- }
- result = (char *)cmark_strbuf_detach(&html);
-
- cmark_iter_free(iter);
- return result;
+char *cmark_render_html(cmark_node *root, int options) {
+ char *result;
+ cmark_strbuf html = GH_BUF_INIT;
+ cmark_event_type ev_type;
+ cmark_node *cur;
+ struct render_state state = {&html, NULL};
+ cmark_iter *iter = cmark_iter_new(root);
+
+ while ((ev_type = cmark_iter_next(iter)) != CMARK_EVENT_DONE) {
+ cur = cmark_iter_get_node(iter);
+ S_render_node(cur, ev_type, &state, options);
+ }
+ result = (char *)cmark_strbuf_detach(&html);
+
+ cmark_iter_free(iter);
+ return result;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 04:15:18 +0000