Import gitbook-markdown

1 files changed, 74 insertions, 0 deletions

diff --git a/packages/gitbook-markdown/src/page.js b/packages/gitbook-markdown/src/page.js
new file mode 100644
index 0000000..70da324
--- /dev/null
+++ b/packages/gitbook-markdown/src/page.js
@@ -0,0 +1,74 @@
+const { State } = require('markup-it');
+const markdown = require('markup-it/lib/markdown');
+
+const RAW_START = '{% raw %}';
+const RAW_END   = '{% endraw %}';
+
+/**
+ * Escape a code block's content using raw blocks
+ *
+ * @param {String}
+ * @return {String}
+ */
+function escape(str) {
+    return RAW_START + str + RAW_END;
+}
+
+
+/**
+ * Add templating "raw" to code blocks to
+ * avoid nunjucks processing their content.
+ *
+ * @param {String} src
+ * @return {String}
+ */
+function preparePage(src) {
+    let levelRaw = 0;
+
+    const fromMD = State.create(markdown);
+    const document = fromMD.deserializeToDocument(src);
+
+    document = document.mapDescendants((node) => {
+
+    });
+
+
+    const content  = markdown.toContent(src, {
+        math:     true,
+        template: true
+    });
+
+    const textMarkdown = markdown.toText(content, {
+        annotate(state, raw, token) {
+            const tokenType = token.getType();
+
+            if (tokenType === MarkupIt.ENTITIES.TEMPLATE) {
+                const type = token.getData().get('type');
+                const expr = token.getAsPlainText();
+
+                if (type === 'expr') {
+                    if (expr === 'raw') {
+                        levelRaw = levelRaw + 1;
+                    } else if (expr == 'endraw') {
+                        levelRaw = 0;
+                    }
+                }
+            }
+
+            if (
+                (tokenType === MarkupIt.BLOCKS.CODE || tokenType === MarkupIt.STYLES.CODE)
+                && levelRaw === 0
+            ) {
+                return escape(raw);
+            }
+
+            return raw;
+        }
+    });
+
+    return textMarkdown;
+}
+
+module.exports = {
+    prepare: preparePage
+};