From ff8898476685e6b7dff03231275a6a8bc2cbaf17 Mon Sep 17 00:00:00 2001
From: "Rafael G. Martins" <rafael@rafaelmartins.eng.br>
Date: Fri, 11 Sep 2020 01:07:43 +0200
Subject: blogc: generate table of contents tree

this commit allows users to use the `{{ TOCTREE }}` variable in their
templates, to get automatically generated table of contents for entries.
The variable is binded to each entry, so it can be used in any block
that runs in entry context, like `{% block entry %}`.

There's a small performance penalty for this, because the table of
contents is rendered for any entry, despite being used or not, and not
generated on-demand.

still missing documentation. tests are good enough.
---
 .gitignore                         |   3 +
 Makefile.am                        |  21 ++
 src/blogc/content-parser.c         |  34 +-
 src/blogc/content-parser.h         |   6 +-
 src/blogc/loader.c                 |  20 +-
 src/blogc/loader.h                 |   5 +-
 src/blogc/main.c                   |   2 +-
 src/blogc/source-parser.c          |  36 ++-
 src/blogc/source-parser.h          |   4 +-
 src/blogc/toctree.c                | 103 ++++++
 src/blogc/toctree.h                |  26 ++
 tests/blogc/check_content_parser.c | 625 ++++++++++++++++++++++++++++++-------
 tests/blogc/check_loader.c         |  88 +++++-
 tests/blogc/check_renderer.c       |   2 +-
 tests/blogc/check_source_parser.c  | 238 ++++++++++++--
 tests/blogc/check_toctree.c        | 234 ++++++++++++++
 16 files changed, 1283 insertions(+), 164 deletions(-)
 create mode 100644 src/blogc/toctree.c
 create mode 100644 src/blogc/toctree.h
 create mode 100644 tests/blogc/check_toctree.c

diff --git a/.gitignore b/.gitignore
index 5336760..659c5f2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -66,6 +66,7 @@ blogc*.html
 /tests/blogc/check_sysinfo
 /tests/blogc/check_sysinfo2
 /tests/blogc/check_template_parser
+/tests/blogc/check_toctree
 /tests/blogc-git-receiver/check_pre_receive_parser
 /tests/blogc-git-receiver/check_pre_receive.sh
 /tests/blogc-git-receiver/check_post_receive.sh
@@ -105,3 +106,5 @@ blogc-*.rpm
 /root/
 
 /maint/releases/
+
+.gdb_history
diff --git a/Makefile.am b/Makefile.am
index 3f00119..8eae1d3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -48,6 +48,7 @@ noinst_HEADERS = \
 	src/blogc/sysinfo.h \
 	src/blogc/source-parser.h \
 	src/blogc/template-parser.h \
+	src/blogc/toctree.h \
 	src/blogc-git-receiver/post-receive.h \
 	src/blogc-git-receiver/pre-receive.h \
 	src/blogc-git-receiver/pre-receive-parser.h \
@@ -137,6 +138,7 @@ libblogc_la_SOURCES = \
 	src/blogc/sysinfo.c \
 	src/blogc/source-parser.c \
 	src/blogc/template-parser.c \
+	src/blogc/toctree.c \
 	$(NULL)
 
 libblogc_la_CFLAGS = \
@@ -474,6 +476,7 @@ check_PROGRAMS += \
 	tests/blogc/check_renderer \
 	tests/blogc/check_source_parser \
 	tests/blogc/check_template_parser \
+	tests/blogc/check_toctree \
 	tests/common/check_config_parser \
 	tests/common/check_error \
 	tests/common/check_sort \
@@ -735,6 +738,24 @@ tests_blogc_check_template_parser_LDADD = \
 	libblogc_common.la \
 	$(NULL)
 
+tests_blogc_check_toctree_SOURCES = \
+	tests/blogc/check_toctree.c \
+	$(NULL)
+
+tests_blogc_check_toctree_CFLAGS = \
+	$(CMOCKA_CFLAGS) \
+	$(NULL)
+
+tests_blogc_check_toctree_LDFLAGS = \
+	-no-install \
+	$(NULL)
+
+tests_blogc_check_toctree_LDADD = \
+	$(CMOCKA_LIBS) \
+	libblogc.la \
+	libblogc_common.la \
+	$(NULL)
+
 tests_common_check_config_parser_SOURCES = \
 	tests/common/check_config_parser.c \
 	$(NULL)
diff --git a/src/blogc/content-parser.c b/src/blogc/content-parser.c
index 047af4b..a42f6f6 100644
--- a/src/blogc/content-parser.c
+++ b/src/blogc/content-parser.c
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -11,6 +11,7 @@
 #include <string.h>
 
 #include "content-parser.h"
+#include "toctree.h"
 #include "../common/utils.h"
 
 // this is a half ass implementation of a markdown-like syntax. bugs are
@@ -676,7 +677,7 @@ blogc_is_ordered_list_item(const char *str, size_t prefix_len)
 
 char*
 blogc_content_parse(const char *src, size_t *end_excerpt, char **first_header,
-    char **description)
+    char **description, char **endl, bc_slist_t **headers)
 {
     // src is always nul-terminated.
     size_t src_len = strlen(src);
@@ -696,11 +697,28 @@ blogc_content_parse(const char *src, size_t *end_excerpt, char **first_header,
     char *parsed = NULL;
     char *slug = NULL;
 
+    char *line_ending = NULL;
+    bool line_ending_found = false;
+    if (endl != NULL) {
+        if (*endl != NULL) {
+            line_ending_found = true;
+        }
+        else {
+            *endl = bc_malloc(3 * sizeof(char));
+        }
+        line_ending = *endl;
+    }
+    else {
+        line_ending = bc_malloc(3 * sizeof(char));
+    }
+
     // this isn't empty because we need some reasonable default value in the
     // unlikely case that we need to print some line ending before evaluating
     // the "real" value.
-    char line_ending[3] = "\n";
-    bool line_ending_found = false;
+    if (!line_ending_found) {
+        line_ending[0] = '\n';
+        line_ending[1] = '\0';
+    }
 
     char d = '\0';
 
@@ -840,6 +858,8 @@ blogc_content_parse(const char *src, size_t *end_excerpt, char **first_header,
                         *first_header = blogc_htmlentities(tmp);
                     parsed = blogc_content_parse_inline(tmp);
                     slug = blogc_slugify(tmp);
+                    if (headers != NULL)
+                        *headers = blogc_toctree_append(*headers, header_level, slug, parsed);
                     if (slug == NULL)
                         bc_string_append_printf(rv, "<h%d>%s</h%d>%s",
                             header_level, parsed, header_level, line_ending);
@@ -922,7 +942,7 @@ blogc_content_parse(const char *src, size_t *end_excerpt, char **first_header,
                     // do not propagate title and description to blockquote parsing,
                     // because we just want paragraphs from first level of
                     // content.
-                    tmp = blogc_content_parse(tmp_str->str, NULL, NULL, NULL);
+                    tmp = blogc_content_parse(tmp_str->str, NULL, NULL, NULL, endl, NULL);
                     bc_string_append_printf(rv, "<blockquote>%s</blockquote>%s",
                         tmp, line_ending);
                     free(tmp);
@@ -1280,5 +1300,9 @@ blogc_content_parse(const char *src, size_t *end_excerpt, char **first_header,
         current++;
     }
 
+    if (endl == NULL) {
+        free(line_ending);
+    }
+
     return bc_string_free(rv, false);
 }
diff --git a/src/blogc/content-parser.h b/src/blogc/content-parser.h
index ea5d29d..a321155 100644
--- a/src/blogc/content-parser.h
+++ b/src/blogc/content-parser.h
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -11,6 +11,7 @@
 
 #include <stddef.h>
 #include <stdbool.h>
+#include "../common/utils.h"
 
 char* blogc_slugify(const char *str);
 char* blogc_htmlentities(const char *str);
@@ -18,6 +19,7 @@ char* blogc_fix_description(const char *paragraph);
 char* blogc_content_parse_inline(const char *src);
 bool blogc_is_ordered_list_item(const char *str, size_t prefix_len);
 char* blogc_content_parse(const char *src, size_t *end_excerpt,
-    char **first_header, char **description);
+    char **first_header, char **description, char **endl,
+    bc_slist_t **headers);
 
 #endif /* _CONTENT_PARSER_H */
diff --git a/src/blogc/loader.c b/src/blogc/loader.c
index d620988..4e03ec3 100644
--- a/src/blogc/loader.c
+++ b/src/blogc/loader.c
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -76,7 +76,7 @@ blogc_template_parse_from_file(const char *f, bc_error_t **err)
 
 
 bc_trie_t*
-blogc_source_parse_from_file(const char *f, bc_error_t **err)
+blogc_source_parse_from_file(bc_trie_t *conf, const char *f, bc_error_t **err)
 {
     if (err == NULL || *err != NULL)
         return NULL;
@@ -85,7 +85,19 @@ blogc_source_parse_from_file(const char *f, bc_error_t **err)
     char *s = bc_file_get_contents(f, true, &len, err);
     if (s == NULL)
         return NULL;
-    bc_trie_t *rv = blogc_source_parse(s, len, err);
+
+    int toctree_maxdepth = -1;
+    const char *maxdepth = bc_trie_lookup(conf, "TOCTREE_MAXDEPTH");
+    if (maxdepth != NULL) {
+        char *endptr;
+        toctree_maxdepth = strtol(maxdepth, &endptr, 10);
+        if (*maxdepth != '\0' && *endptr != '\0') {
+            fprintf(stderr, "warning: invalid value for 'TOCTREE_MAXDEPTH' "
+                "variable: %s. using %d instead\n", maxdepth, toctree_maxdepth);
+        }
+    }
+
+    bc_trie_t *rv = blogc_source_parse(s, len, toctree_maxdepth, err);
 
     // set FILENAME variable
     if (rv != NULL) {
@@ -133,7 +145,7 @@ blogc_source_parse_from_files(bc_trie_t *conf, bc_slist_t *l, bc_error_t **err)
     size_t with_date = 0;
     for (bc_slist_t *tmp = l; tmp != NULL; tmp = tmp->next) {
         char *f = tmp->data;
-        bc_trie_t *s = blogc_source_parse_from_file(f, &tmp_err);
+        bc_trie_t *s = blogc_source_parse_from_file(conf, f, &tmp_err);
         if (s == NULL) {
             *err = bc_error_new_printf(BLOGC_ERROR_LOADER,
                 "An error occurred while parsing source file: %s\n\n%s",
diff --git a/src/blogc/loader.h b/src/blogc/loader.h
index 66da7d0..fe88730 100644
--- a/src/blogc/loader.h
+++ b/src/blogc/loader.h
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -14,7 +14,8 @@
 
 char* blogc_get_filename(const char *f);
 bc_slist_t* blogc_template_parse_from_file(const char *f, bc_error_t **err);
-bc_trie_t* blogc_source_parse_from_file(const char *f, bc_error_t **err);
+bc_trie_t* blogc_source_parse_from_file(bc_trie_t *conf, const char *f,
+    bc_error_t **err);
 bc_slist_t* blogc_source_parse_from_files(bc_trie_t *conf, bc_slist_t *l,
     bc_error_t **err);
 
diff --git a/src/blogc/main.c b/src/blogc/main.c
index f952957..7024967 100644
--- a/src/blogc/main.c
+++ b/src/blogc/main.c
@@ -307,7 +307,7 @@ main(int argc, char **argv)
                 listing_entries_source = bc_slist_append(listing_entries_source, NULL);
                 continue;
             }
-            bc_trie_t *e = blogc_source_parse_from_file(tmp->data, &err);
+            bc_trie_t *e = blogc_source_parse_from_file(config, tmp->data, &err);
             if (err != NULL) {
                 bc_error_print(err, "blogc");
                 rv = 1;
diff --git a/src/blogc/source-parser.c b/src/blogc/source-parser.c
index 18cf95a..13df9e3 100644
--- a/src/blogc/source-parser.c
+++ b/src/blogc/source-parser.c
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -11,6 +11,7 @@
 
 #include "content-parser.h"
 #include "source-parser.h"
+#include "toctree.h"
 #include "../common/error.h"
 #include "../common/utils.h"
 
@@ -27,7 +28,8 @@ typedef enum {
 
 
 bc_trie_t*
-blogc_source_parse(const char *src, size_t src_len, bc_error_t **err)
+blogc_source_parse(const char *src, size_t src_len, int toctree_maxdepth,
+    bc_error_t **err)
 {
     if (err == NULL || *err != NULL)
         return NULL;
@@ -153,8 +155,11 @@ blogc_source_parse(const char *src, size_t src_len, bc_error_t **err)
                     bc_trie_insert(rv, "RAW_CONTENT", tmp);
                     char *first_header = NULL;
                     char *description = NULL;
+                    char *endl = NULL;
+                    bc_slist_t *headers = NULL;
+                    bool read_headers = (NULL == bc_trie_lookup(rv, "TOCTREE"));
                     content = blogc_content_parse(tmp, &end_excerpt,
-                        &first_header, &description);
+                        &first_header, &description, &endl, read_headers ? &headers : NULL);
                     if (first_header != NULL) {
                         // do not override source-provided first_header.
                         if (NULL == bc_trie_lookup(rv, "FIRST_HEADER")) {
@@ -177,6 +182,31 @@ blogc_source_parse(const char *src, size_t src_len, bc_error_t **err)
                             free(description);
                         }
                     }
+                    if (headers != NULL) {
+                        // we already validated that the user do not defined TOCTREE
+                        // manually in source file.
+                        const char *maxdepth = bc_trie_lookup(rv, "TOCTREE_MAXDEPTH");
+                        if (maxdepth != NULL) {
+                            char *endptr;
+                            toctree_maxdepth = strtol(maxdepth, &endptr, 10);
+                            if (*maxdepth != '\0' && *endptr != '\0') {
+                                *err = bc_error_parser(BLOGC_ERROR_SOURCE_PARSER, src, src_len,
+                                    current,
+                                    "Invalid value for 'TOCTREE_MAXDEPTH' variable: %s.",
+                                    maxdepth);
+                                blogc_toctree_free(headers);
+                                free(endl);
+                                free(content);
+                                break;
+                            }
+                        }
+                        char *toctree = blogc_toctree_render(headers, toctree_maxdepth, endl);
+                        blogc_toctree_free(headers);
+                        if (toctree != NULL) {
+                            bc_trie_insert(rv, "TOCTREE", toctree);
+                        }
+                    }
+                    free(endl);
                     bc_trie_insert(rv, "CONTENT", content);
                     bc_trie_insert(rv, "EXCERPT", end_excerpt == 0 ?
                         bc_strdup(content) : bc_strndup(content, end_excerpt));
diff --git a/src/blogc/source-parser.h b/src/blogc/source-parser.h
index 8672fb0..2acd753 100644
--- a/src/blogc/source-parser.h
+++ b/src/blogc/source-parser.h
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -13,7 +13,7 @@
 #include "../common/error.h"
 #include "../common/utils.h"
 
-bc_trie_t* blogc_source_parse(const char *src, size_t src_len,
+bc_trie_t* blogc_source_parse(const char *src, size_t src_len, int toctree_maxdepth,
     bc_error_t **err);
 
 #endif /* _SOURCE_PARSER_H */
diff --git a/src/blogc/toctree.c b/src/blogc/toctree.c
new file mode 100644
index 0000000..307c62c
--- /dev/null
+++ b/src/blogc/toctree.c
@@ -0,0 +1,103 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#include <stdlib.h>
+#include "../common/utils.h"
+#include "toctree.h"
+
+bc_slist_t*
+blogc_toctree_append(bc_slist_t *headers, size_t level, const char *slug, const char *text)
+{
+    if (level == 0)
+        return headers;
+
+    blogc_toctree_header_t *t = bc_malloc(sizeof(blogc_toctree_header_t));
+    t->level = level;
+    t->slug = bc_strdup(slug);
+    t->text = bc_strdup(text);
+    return bc_slist_append(headers, t);
+}
+
+
+char*
+blogc_toctree_render(bc_slist_t *headers, int maxdepth, const char *endl)
+{
+    if (headers == NULL || maxdepth == 0)
+        return NULL;
+
+    // find lower level
+    size_t lower_level = 0;
+    for (bc_slist_t *l = headers; l != NULL; l = l->next) {
+        size_t lv = ((blogc_toctree_header_t*) l->data)->level;
+        if (lower_level == 0 || lower_level > lv) {
+            lower_level = lv;
+        }
+    }
+
+    if (lower_level == 0)
+        return NULL;
+
+    // render
+    bc_string_t *rv = bc_string_new();
+    bc_string_append_printf(rv, "<ul>%s", endl == NULL ? "\n" : endl);
+    size_t spacing = 4;
+    size_t current_level = lower_level;
+    for (bc_slist_t *l = headers; l != NULL; l = l->next) {
+        blogc_toctree_header_t *t = l->data;
+        if (t->level - lower_level >= maxdepth) {
+            continue;
+        }
+        while (current_level > t->level) {
+            spacing -= 4;
+            bc_string_append_printf(rv, "%*s</ul>%s", spacing, "",
+                endl == NULL ? "\n" : endl);
+            current_level--;
+        }
+        while (current_level < t->level) {
+            bc_string_append_printf(rv, "%*s<ul>%s", spacing, "",
+                endl == NULL ? "\n" : endl);
+            current_level++;
+            spacing += 4;
+        }
+        bc_string_append_printf(rv, "%*s<li>", spacing, "");
+        if (t->slug != NULL) {
+            bc_string_append_printf(rv, "<a href=\"#%s\">%s</a>", t->slug,
+                t->text != NULL ? t->text : "");
+        }
+        else {
+            bc_string_append(rv, t->text);
+        }
+        bc_string_append_printf(rv, "</li>%s", endl == NULL ? "\n" : endl);
+    }
+
+    // close leftovers
+    while (current_level >= lower_level) {
+        spacing -= 4;
+        bc_string_append_printf(rv, "%*s</ul>%s", spacing, "",
+            endl == NULL ? "\n" : endl);
+        current_level--;
+    }
+
+    return bc_string_free(rv, false);
+}
+
+
+static void
+free_header(blogc_toctree_header_t *h)
+{
+    free(h->slug);
+    free(h->text);
+    free(h);
+}
+
+
+void
+blogc_toctree_free(bc_slist_t *l)
+{
+    bc_slist_free_full(l, (bc_free_func_t) free_header);
+}
diff --git a/src/blogc/toctree.h b/src/blogc/toctree.h
new file mode 100644
index 0000000..460119b
--- /dev/null
+++ b/src/blogc/toctree.h
@@ -0,0 +1,26 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#ifndef ___TOCTREE_H
+#define ___TOCTREE_H
+
+#include "../common/utils.h"
+
+typedef struct {
+    size_t level;
+    char *slug;
+    char *text;
+} blogc_toctree_header_t;
+
+bc_slist_t* blogc_toctree_append(bc_slist_t *headers, size_t level,
+    const char *slug, const char *text);
+char* blogc_toctree_render(bc_slist_t *headers, int maxdepth,
+    const char *endl);
+void blogc_toctree_free(bc_slist_t *l);
+
+#endif /* ___TOCTREE_H */
diff --git a/tests/blogc/check_content_parser.c b/tests/blogc/check_content_parser.c
index de15bac..5fa8f06 100644
--- a/tests/blogc/check_content_parser.c
+++ b/tests/blogc/check_content_parser.c
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -11,6 +11,7 @@
 #include <setjmp.h>
 #include <cmocka.h>
 #include <stdlib.h>
+#include "../../src/blogc/toctree.h"
 #include "../../src/blogc/content-parser.h"
 
 
@@ -125,6 +126,8 @@ test_content_parse(void **state)
     size_t l = 0;
     char *t = NULL;
     char *d = NULL;
+    char *n = NULL;
+    bc_slist_t *h = NULL;
     char *html = blogc_content_parse(
         "# um\n"
         "## dois\n"
@@ -166,13 +169,17 @@ test_content_parse(void **state)
         "\n"
         "-- asd\n"
         "\n"
-        "--- lol\n", &l, &t, &d);
+        "--- lol\n", &l, &t, &d, &n, &h);
     assert_non_null(html);
     assert_int_equal(l, 0);
     assert_non_null(t);
     assert_string_equal(t, "um");
     assert_non_null(d);
     assert_string_equal(d, "bola chunda");
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    assert_non_null(h);
+    assert_int_equal(bc_slist_length(h), 6);
     assert_string_equal(html,
         "<h1 id=\"um\">um</h1>\n"
         "<h2 id=\"dois\">dois</h2>\n"
@@ -212,6 +219,8 @@ test_content_parse(void **state)
     free(html);
     free(t);
     free(d);
+    free(n);
+    blogc_toctree_free(h);
 }
 
 
@@ -221,6 +230,8 @@ test_content_parse_crlf(void **state)
     size_t l = 0;
     char *t = NULL;
     char *d = NULL;
+    char *n = NULL;
+    bc_slist_t *h = NULL;
     char *html = blogc_content_parse(
         "# um\r\n"
         "## dois\r\n"
@@ -262,13 +273,17 @@ test_content_parse_crlf(void **state)
         "\r\n"
         "-- asd\r\n"
         "\r\n"
-        "--- lol\r\n", &l, &t, &d);
+        "--- lol\r\n", &l, &t, &d, &n, &h);
     assert_non_null(html);
     assert_int_equal(l, 0);
     assert_non_null(t);
     assert_string_equal(t, "um");
     assert_non_null(d);
     assert_string_equal(d, "bola chunda");
+    assert_non_null(n);
+    assert_string_equal(n, "\r\n");
+    assert_non_null(h);
+    assert_int_equal(bc_slist_length(h), 6);
     assert_string_equal(html,
         "<h1 id=\"um\">um</h1>\r\n"
         "<h2 id=\"dois\">dois</h2>\r\n"
@@ -308,6 +323,8 @@ test_content_parse_crlf(void **state)
     free(html);
     free(t);
     free(d);
+    free(n);
+    blogc_toctree_free(h);
 }
 
 
@@ -317,6 +334,8 @@ test_content_parse_with_excerpt(void **state)
     size_t l = 0;
     char *t = NULL;
     char *d = NULL;
+    char *n = NULL;
+    bc_slist_t *h = NULL;
     char *html = blogc_content_parse(
         "# test\n"
         "\n"
@@ -325,13 +344,17 @@ test_content_parse_with_excerpt(void **state)
         "..\n"
         "\n"
         "guda\n"
-        "lol", &l, &t, &d);
+        "lol", &l, &t, &d, &n, &h);
     assert_non_null(html);
     assert_int_equal(l, 38);
     assert_non_null(t);
     assert_string_equal(t, "test");
     assert_non_null(d);
     assert_string_equal(d, "chunda");
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    assert_non_null(h);
+    assert_int_equal(bc_slist_length(h), 1);
     assert_string_equal(html,
         "<h1 id=\"test\">test</h1>\n"
         "<p>chunda</p>\n"
@@ -341,8 +364,12 @@ test_content_parse_with_excerpt(void **state)
     l = 0;
     free(t);
     free(d);
+    free(n);
+    blogc_toctree_free(h);
     t = NULL;
     d = NULL;
+    n = NULL;
+    h = NULL;
     html = blogc_content_parse(
         "# test\n"
         "\n"
@@ -351,13 +378,17 @@ test_content_parse_with_excerpt(void **state)
         "...\n"
         "\n"
         "guda\n"
-        "lol", &l, &t, &d);
+        "lol", &l, &t, &d, &n, &h);
     assert_non_null(html);
     assert_int_equal(l, 38);
     assert_non_null(t);
     assert_string_equal(t, "test");
     assert_non_null(d);
     assert_string_equal(d, "chunda");
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    assert_non_null(h);
+    assert_int_equal(bc_slist_length(h), 1);
     assert_string_equal(html,
         "<h1 id=\"test\">test</h1>\n"
         "<p>chunda</p>\n"
@@ -366,6 +397,8 @@ test_content_parse_with_excerpt(void **state)
     free(html);
     free(t);
     free(d);
+    free(n);
+    blogc_toctree_free(h);
 }
 
 
@@ -375,6 +408,8 @@ test_content_parse_with_excerpt_crlf(void **state)
     size_t l = 0;
     char *t = NULL;
     char *d = NULL;
+    char *n = NULL;
+    bc_slist_t *h = NULL;
     char *html = blogc_content_parse(
         "# test\r\n"
         "\r\n"
@@ -383,13 +418,17 @@ test_content_parse_with_excerpt_crlf(void **state)
         "..\r\n"
         "\r\n"
         "guda\r\n"
-        "lol", &l, &t, &d);
+        "lol", &l, &t, &d, &n, &h);
     assert_non_null(html);
     assert_int_equal(l, 40);
     assert_non_null(t);
     assert_string_equal(t, "test");
     assert_non_null(d);
     assert_string_equal(d, "chunda");
+    assert_non_null(n);
+    assert_string_equal(n, "\r\n");
+    assert_non_null(h);
+    assert_int_equal(bc_slist_length(h), 1);
     assert_string_equal(html,
         "<h1 id=\"test\">test</h1>\r\n"
         "<p>chunda</p>\r\n"
@@ -399,8 +438,12 @@ test_content_parse_with_excerpt_crlf(void **state)
     l = 0;
     free(t);
     free(d);
+    free(n);
+    blogc_toctree_free(h);
     t = NULL;
     d = NULL;
+    n = NULL;
+    h = NULL;
     html = blogc_content_parse(
         "# test\r\n"
         "\r\n"
@@ -409,13 +452,17 @@ test_content_parse_with_excerpt_crlf(void **state)
         "...\r\n"
         "\r\n"
         "guda\r\n"
-        "lol", &l, &t, &d);
+        "lol", &l, &t, &d, &n, &h);
     assert_non_null(html);
     assert_int_equal(l, 40);
     assert_non_null(t);
     assert_string_equal(t, "test");
     assert_non_null(d);
     assert_string_equal(d, "chunda");
+    assert_non_null(n);
+    assert_string_equal(n, "\r\n");
+    assert_non_null(h);
+    assert_int_equal(bc_slist_length(h), 1);
     assert_string_equal(html,
         "<h1 id=\"test\">test</h1>\r\n"
         "<p>chunda</p>\r\n"
@@ -424,17 +471,19 @@ test_content_parse_with_excerpt_crlf(void **state)
     free(html);
     free(t);
     free(d);
+    free(n);
+    blogc_toctree_free(h);
 }
 
 
 static void
 test_content_parse_header(void **state)
 {
-    char *html = blogc_content_parse("## bola", NULL, NULL, NULL);
+    char *html = blogc_content_parse("## bola", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<h2 id=\"bola\">bola</h2>\n");
     free(html);
-    html = blogc_content_parse("## bola\n", NULL, NULL, NULL);
+    html = blogc_content_parse("## bola\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<h2 id=\"bola\">bola</h2>\n");
     free(html);
@@ -443,7 +492,7 @@ test_content_parse_header(void **state)
         "\n"
         "## bola\n"
         "\n"
-        "guda\n", NULL, NULL, NULL);
+        "guda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\n"
@@ -456,11 +505,11 @@ test_content_parse_header(void **state)
 static void
 test_content_parse_header_crlf(void **state)
 {
-    char *html = blogc_content_parse("## bola", NULL, NULL, NULL);
+    char *html = blogc_content_parse("## bola", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<h2 id=\"bola\">bola</h2>\n");
     free(html);
-    html = blogc_content_parse("## bola\r\n", NULL, NULL, NULL);
+    html = blogc_content_parse("## bola\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<h2 id=\"bola\">bola</h2>\r\n");
     free(html);
@@ -469,7 +518,7 @@ test_content_parse_header_crlf(void **state)
         "\r\n"
         "## bola\r\n"
         "\r\n"
-        "guda\r\n", NULL, NULL, NULL);
+        "guda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\r\n"
@@ -482,11 +531,11 @@ test_content_parse_header_crlf(void **state)
 static void
 test_content_parse_html(void **state)
 {
-    char *html = blogc_content_parse("<div>\n</div>", NULL, NULL, NULL);
+    char *html = blogc_content_parse("<div>\n</div>", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<div>\n</div>\n");
     free(html);
-    html = blogc_content_parse("<div>\n</div>\n", NULL, NULL, NULL);
+    html = blogc_content_parse("<div>\n</div>\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<div>\n</div>\n");
     free(html);
@@ -496,7 +545,7 @@ test_content_parse_html(void **state)
         "<div>\n"
         "</div>\n"
         "\n"
-        "chunda\n", NULL, NULL, NULL);
+        "chunda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\n"
@@ -509,11 +558,11 @@ test_content_parse_html(void **state)
 static void
 test_content_parse_html_crlf(void **state)
 {
-    char *html = blogc_content_parse("<div>\r\n</div>", NULL, NULL, NULL);
+    char *html = blogc_content_parse("<div>\r\n</div>", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<div>\r\n</div>\r\n");
     free(html);
-    html = blogc_content_parse("<div>\r\n</div>\r\n", NULL, NULL, NULL);
+    html = blogc_content_parse("<div>\r\n</div>\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<div>\r\n</div>\r\n");
     free(html);
@@ -523,7 +572,7 @@ test_content_parse_html_crlf(void **state)
         "<div>\r\n"
         "</div>\r\n"
         "\r\n"
-        "chunda\r\n", NULL, NULL, NULL);
+        "chunda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\r\n"
@@ -536,14 +585,14 @@ test_content_parse_html_crlf(void **state)
 static void
 test_content_parse_blockquote(void **state)
 {
-    char *html = blogc_content_parse(">  bola\n>  guda", NULL, NULL, NULL);
+    char *html = blogc_content_parse(">  bola\n>  guda", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<blockquote><p>bola\n"
         "guda</p>\n"
         "</blockquote>\n");
     free(html);
-    html = blogc_content_parse(">  bola\n>  guda\n", NULL, NULL, NULL);
+    html = blogc_content_parse(">  bola\n>  guda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<blockquote><p>bola\n"
@@ -555,7 +604,7 @@ test_content_parse_blockquote(void **state)
         "\n"
         ">   bola\n"
         "\n"
-        "chunda\n", NULL, NULL, NULL);
+        "chunda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\n"
@@ -569,7 +618,7 @@ test_content_parse_blockquote(void **state)
         ">   bola\n"
         ">   guda\n"
         "\n"
-        "chunda\n", NULL, NULL, NULL);
+        "chunda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\n"
@@ -584,14 +633,14 @@ test_content_parse_blockquote(void **state)
 static void
 test_content_parse_blockquote_crlf(void **state)
 {
-    char *html = blogc_content_parse(">  bola\r\n>  guda", NULL, NULL, NULL);
+    char *html = blogc_content_parse(">  bola\r\n>  guda", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<blockquote><p>bola\r\n"
         "guda</p>\r\n"
         "</blockquote>\r\n");
     free(html);
-    html = blogc_content_parse(">  bola\r\n>  guda\r\n", NULL, NULL, NULL);
+    html = blogc_content_parse(">  bola\r\n>  guda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<blockquote><p>bola\r\n"
@@ -603,7 +652,7 @@ test_content_parse_blockquote_crlf(void **state)
         "\r\n"
         ">   bola\r\n"
         "\r\n"
-        "chunda\r\n", NULL, NULL, NULL);
+        "chunda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\r\n"
@@ -617,7 +666,7 @@ test_content_parse_blockquote_crlf(void **state)
         ">   bola\r\n"
         ">   guda\r\n"
         "\r\n"
-        "chunda\r\n", NULL, NULL, NULL);
+        "chunda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\r\n"
@@ -632,13 +681,13 @@ test_content_parse_blockquote_crlf(void **state)
 static void
 test_content_parse_code(void **state)
 {
-    char *html = blogc_content_parse("  bola\n  guda", NULL, NULL, NULL);
+    char *html = blogc_content_parse("  bola\n  guda", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<pre><code>bola\n"
         "guda</code></pre>\n");
     free(html);
-    html = blogc_content_parse("  bola\n  guda\n", NULL, NULL, NULL);
+    html = blogc_content_parse("  bola\n  guda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<pre><code>bola\n"
@@ -650,7 +699,7 @@ test_content_parse_code(void **state)
         "   bola\n"
         "   guda\n"
         "\n"
-        "chunda\n", NULL, NULL, NULL);
+        "chunda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\n"
@@ -664,13 +713,13 @@ test_content_parse_code(void **state)
 static void
 test_content_parse_code_crlf(void **state)
 {
-    char *html = blogc_content_parse("  bola\r\n  guda", NULL, NULL, NULL);
+    char *html = blogc_content_parse("  bola\r\n  guda", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<pre><code>bola\r\n"
         "guda</code></pre>\r\n");
     free(html);
-    html = blogc_content_parse("  bola\r\n  guda\r\n", NULL, NULL, NULL);
+    html = blogc_content_parse("  bola\r\n  guda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<pre><code>bola\r\n"
@@ -682,7 +731,7 @@ test_content_parse_code_crlf(void **state)
         "   bola\r\n"
         "   guda\r\n"
         "\r\n"
-        "chunda\r\n", NULL, NULL, NULL);
+        "chunda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\r\n"
@@ -696,28 +745,28 @@ test_content_parse_code_crlf(void **state)
 static void
 test_content_parse_horizontal_rule(void **state)
 {
-    char *html = blogc_content_parse("bola\nguda\n\n***", NULL, NULL, NULL);
+    char *html = blogc_content_parse("bola\nguda\n\n***", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola\n"
         "guda</p>\n"
         "<hr />\n");
     free(html);
-    html = blogc_content_parse("bola\nguda\n\n++++", NULL, NULL, NULL);
+    html = blogc_content_parse("bola\nguda\n\n++++", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola\n"
         "guda</p>\n"
         "<hr />\n");
     free(html);
-    html = blogc_content_parse("bola\nguda\n\n---\n", NULL, NULL, NULL);
+    html = blogc_content_parse("bola\nguda\n\n---\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola\n"
         "guda</p>\n"
         "<hr />\n");
     free(html);
-    html = blogc_content_parse("bola\nguda\n\n****\n", NULL, NULL, NULL);
+    html = blogc_content_parse("bola\nguda\n\n****\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola\n"
@@ -729,7 +778,7 @@ test_content_parse_horizontal_rule(void **state)
         "\n"
         "***\n"
         "\n"
-        "chunda\n", NULL, NULL, NULL);
+        "chunda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\n"
@@ -741,7 +790,7 @@ test_content_parse_horizontal_rule(void **state)
         "\n"
         "----\n"
         "\n"
-        "chunda\n", NULL, NULL, NULL);
+        "chunda\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\n"
@@ -754,28 +803,28 @@ test_content_parse_horizontal_rule(void **state)
 static void
 test_content_parse_horizontal_rule_crlf(void **state)
 {
-    char *html = blogc_content_parse("bola\r\nguda\r\n\r\n***", NULL, NULL, NULL);
+    char *html = blogc_content_parse("bola\r\nguda\r\n\r\n***", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola\r\n"
         "guda</p>\r\n"
         "<hr />\r\n");
     free(html);
-    html = blogc_content_parse("bola\r\nguda\r\n\r\n++++", NULL, NULL, NULL);
+    html = blogc_content_parse("bola\r\nguda\r\n\r\n++++", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola\r\n"
         "guda</p>\r\n"
         "<hr />\r\n");
     free(html);
-    html = blogc_content_parse("bola\r\nguda\r\n\r\n---\r\n", NULL, NULL, NULL);
+    html = blogc_content_parse("bola\r\nguda\r\n\r\n---\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola\r\n"
         "guda</p>\r\n"
         "<hr />\r\n");
     free(html);
-    html = blogc_content_parse("bola\r\nguda\r\n\r\n****\r\n", NULL, NULL, NULL);
+    html = blogc_content_parse("bola\r\nguda\r\n\r\n****\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola\r\n"
@@ -787,7 +836,7 @@ test_content_parse_horizontal_rule_crlf(void **state)
         "\r\n"
         "***\r\n"
         "\r\n"
-        "chunda\r\n", NULL, NULL, NULL);
+        "chunda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\r\n"
@@ -799,7 +848,7 @@ test_content_parse_horizontal_rule_crlf(void **state)
         "\r\n"
         "----\r\n"
         "\r\n"
-        "chunda\r\n", NULL, NULL, NULL);
+        "chunda\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>bola</p>\r\n"
@@ -817,7 +866,7 @@ test_content_parse_unordered_list(void **state)
         "\n"
         "*  asd\n"
         "*  qwe\n"
-        "*  zxc", NULL, NULL, NULL);
+        "*  zxc", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\n"
@@ -832,7 +881,7 @@ test_content_parse_unordered_list(void **state)
         "\n"
         "*  asd\n"
         "*  qwe\n"
-        "*  zxc\n", NULL, NULL, NULL);
+        "*  zxc\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\n"
@@ -849,7 +898,7 @@ test_content_parse_unordered_list(void **state)
         "*  qwe\n"
         "*  zxc\n"
         "\n"
-        "fuuuu\n", NULL, NULL, NULL);
+        "fuuuu\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\n"
@@ -869,7 +918,7 @@ test_content_parse_unordered_list(void **state)
         "*  zxc\n"
         "   1234\n"
         "\n"
-        "fuuuu\n", NULL, NULL, NULL);
+        "fuuuu\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\n"
@@ -885,7 +934,7 @@ test_content_parse_unordered_list(void **state)
     html = blogc_content_parse(
         "*  asd\n"
         "*   qwe\n"
-        "*    zxc", NULL, NULL, NULL);
+        "*    zxc", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<ul>\n"
@@ -905,7 +954,7 @@ test_content_parse_unordered_list_crlf(void **state)
         "\r\n"
         "*  asd\r\n"
         "*  qwe\r\n"
-        "*  zxc", NULL, NULL, NULL);
+        "*  zxc", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\r\n"
@@ -920,7 +969,7 @@ test_content_parse_unordered_list_crlf(void **state)
         "\r\n"
         "*  asd\r\n"
         "*  qwe\r\n"
-        "*  zxc\r\n", NULL, NULL, NULL);
+        "*  zxc\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\r\n"
@@ -937,7 +986,7 @@ test_content_parse_unordered_list_crlf(void **state)
         "*  qwe\r\n"
         "*  zxc\r\n"
         "\r\n"
-        "fuuuu\r\n", NULL, NULL, NULL);
+        "fuuuu\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\r\n"
@@ -957,7 +1006,7 @@ test_content_parse_unordered_list_crlf(void **state)
         "*  zxc\r\n"
         "   1234\r\n"
         "\r\n"
-        "fuuuu\r\n", NULL, NULL, NULL);
+        "fuuuu\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\r\n"
@@ -973,7 +1022,7 @@ test_content_parse_unordered_list_crlf(void **state)
     html = blogc_content_parse(
         "*  asd\r\n"
         "*   qwe\r\n"
-        "*    zxc", NULL, NULL, NULL);
+        "*    zxc", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<ul>\r\n"
@@ -993,7 +1042,7 @@ test_content_parse_ordered_list(void **state)
         "\n"
         "1.  asd\n"
         "2.  qwe\n"
-        "3.  zxc", NULL, NULL, NULL);
+        "3.  zxc", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\n"
@@ -1008,7 +1057,7 @@ test_content_parse_ordered_list(void **state)
         "\n"
         "1.  asd\n"
         "2.  qwe\n"
-        "3.  zxc\n", NULL, NULL, NULL);
+        "3.  zxc\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\n"
@@ -1025,7 +1074,7 @@ test_content_parse_ordered_list(void **state)
         "2.  qwe\n"
         "3.  zxc\n"
         "\n"
-        "fuuuu\n", NULL, NULL, NULL);
+        "fuuuu\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\n"
@@ -1045,7 +1094,7 @@ test_content_parse_ordered_list(void **state)
         "3.  zxc\n"
         "    1234\n"
         "\n"
-        "fuuuu\n", NULL, NULL, NULL);
+        "fuuuu\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\n"
@@ -1061,7 +1110,7 @@ test_content_parse_ordered_list(void **state)
     html = blogc_content_parse(
         "1.  asd\n"
         "2.   qwe\n"
-        "3.    zxc", NULL, NULL, NULL);
+        "3.    zxc", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<ol>\n"
@@ -1081,7 +1130,7 @@ test_content_parse_ordered_list_crlf(void **state)
         "\r\n"
         "1.  asd\r\n"
         "2.  qwe\r\n"
-        "3.  zxc", NULL, NULL, NULL);
+        "3.  zxc", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\r\n"
@@ -1096,7 +1145,7 @@ test_content_parse_ordered_list_crlf(void **state)
         "\r\n"
         "1.  asd\r\n"
         "2.  qwe\r\n"
-        "3.  zxc\r\n", NULL, NULL, NULL);
+        "3.  zxc\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\r\n"
@@ -1113,7 +1162,7 @@ test_content_parse_ordered_list_crlf(void **state)
         "2.  qwe\r\n"
         "3.  zxc\r\n"
         "\r\n"
-        "fuuuu\r\n", NULL, NULL, NULL);
+        "fuuuu\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\r\n"
@@ -1133,7 +1182,7 @@ test_content_parse_ordered_list_crlf(void **state)
         "3.  zxc\r\n"
         "    1234\r\n"
         "\r\n"
-        "fuuuu\r\n", NULL, NULL, NULL);
+        "fuuuu\r\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>lol</p>\r\n"
@@ -1149,7 +1198,7 @@ test_content_parse_ordered_list_crlf(void **state)
     html = blogc_content_parse(
         "1.  asd\r\n"
         "2.   qwe\r\n"
-        "3.    zxc", NULL, NULL, NULL);
+        "3.    zxc", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<ol>\r\n"
@@ -1165,7 +1214,7 @@ static void
 test_content_parse_first_header(void **state)
 {
     char *t = NULL;
-    char *html = blogc_content_parse("# foo", NULL, &t, NULL);
+    char *html = blogc_content_parse("# foo", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<h1 id=\"foo\">foo</h1>\n");
     assert_non_null(t);
@@ -1173,7 +1222,7 @@ test_content_parse_first_header(void **state)
     free(html);
     free(t);
     t = NULL;
-    html = blogc_content_parse("# foo\n", NULL, &t, NULL);
+    html = blogc_content_parse("# foo\n", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<h1 id=\"foo\">foo</h1>\n");
     assert_non_null(t);
@@ -1184,7 +1233,7 @@ test_content_parse_first_header(void **state)
     html = blogc_content_parse(
         "# foo\n"
         "## bar\n"
-        "### baz", NULL, &t, NULL);
+        "### baz", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\n"
@@ -1198,7 +1247,7 @@ test_content_parse_first_header(void **state)
     html = blogc_content_parse(
         "# foo\n"
         "## bar\n"
-        "### baz\n", NULL, &t, NULL);
+        "### baz\n", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\n"
@@ -1212,7 +1261,7 @@ test_content_parse_first_header(void **state)
     html = blogc_content_parse(
         "## bar\n"
         "# foo\n"
-        "### baz", NULL, &t, NULL);
+        "### baz", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h2 id=\"bar\">bar</h2>\n"
@@ -1226,7 +1275,7 @@ test_content_parse_first_header(void **state)
     html = blogc_content_parse(
         "## bar\n"
         "# foo\n"
-        "### baz\n", NULL, &t, NULL);
+        "### baz\n", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h2 id=\"bar\">bar</h2>\n"
@@ -1243,7 +1292,7 @@ static void
 test_content_parse_first_header_crlf(void **state)
 {
     char *t = NULL;
-    char *html = blogc_content_parse("# foo\r\n", NULL, &t, NULL);
+    char *html = blogc_content_parse("# foo\r\n", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<h1 id=\"foo\">foo</h1>\r\n");
     assert_non_null(t);
@@ -1254,7 +1303,7 @@ test_content_parse_first_header_crlf(void **state)
     html = blogc_content_parse(
         "# foo\r\n"
         "## bar\r\n"
-        "### baz", NULL, &t, NULL);
+        "### baz", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\r\n"
@@ -1268,7 +1317,7 @@ test_content_parse_first_header_crlf(void **state)
     html = blogc_content_parse(
         "# foo\r\n"
         "## bar\r\n"
-        "### baz\r\n", NULL, &t, NULL);
+        "### baz\r\n", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\r\n"
@@ -1282,7 +1331,7 @@ test_content_parse_first_header_crlf(void **state)
     html = blogc_content_parse(
         "## bar\r\n"
         "# foo\r\n"
-        "### baz", NULL, &t, NULL);
+        "### baz", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h2 id=\"bar\">bar</h2>\r\n"
@@ -1296,7 +1345,7 @@ test_content_parse_first_header_crlf(void **state)
     html = blogc_content_parse(
         "## bar\r\n"
         "# foo\r\n"
-        "### baz\r\n", NULL, &t, NULL);
+        "### baz\r\n", NULL, &t, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h2 id=\"bar\">bar</h2>\r\n"
@@ -1309,6 +1358,251 @@ test_content_parse_first_header_crlf(void **state)
 }
 
 
+static void
+test_content_parse_headers(void **state)
+{
+    bc_slist_t *h = NULL;
+    char *html = blogc_content_parse("# foo", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html, "<h1 id=\"foo\">foo</h1>\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "foo");
+    assert_null(h->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse("# foo\n", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html, "<h1 id=\"foo\">foo</h1>\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "foo");
+    assert_null(h->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse(
+        "# foo\n"
+        "## bar\n"
+        "### baz", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html,
+        "<h1 id=\"foo\">foo</h1>\n"
+        "<h2 id=\"bar\">bar</h2>\n"
+        "<h3 id=\"baz\">baz</h3>\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "foo");
+    assert_non_null(h->next);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->slug, "bar");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->text, "bar");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->next->data)->level, 3);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->slug, "baz");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->text, "baz");
+    assert_null(h->next->next->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse(
+        "# foo\n"
+        "## bar\n"
+        "### baz\n", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html,
+        "<h1 id=\"foo\">foo</h1>\n"
+        "<h2 id=\"bar\">bar</h2>\n"
+        "<h3 id=\"baz\">baz</h3>\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "foo");
+    assert_non_null(h->next);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->slug, "bar");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->text, "bar");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->next->data)->level, 3);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->slug, "baz");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->text, "baz");
+    assert_null(h->next->next->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse(
+        "## bar\n"
+        "# foo\n"
+        "### baz", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html,
+        "<h2 id=\"bar\">bar</h2>\n"
+        "<h1 id=\"foo\">foo</h1>\n"
+        "<h3 id=\"baz\">baz</h3>\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "bar");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "bar");
+    assert_non_null(h->next);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->text, "foo");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->next->data)->level, 3);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->slug, "baz");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->text, "baz");
+    assert_null(h->next->next->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse(
+        "## bar\n"
+        "# foo\n"
+        "### baz\n", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html,
+        "<h2 id=\"bar\">bar</h2>\n"
+        "<h1 id=\"foo\">foo</h1>\n"
+        "<h3 id=\"baz\">baz</h3>\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "bar");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "bar");
+    assert_non_null(h->next);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->text, "foo");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->next->data)->level, 3);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->slug, "baz");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->text, "baz");
+    assert_null(h->next->next->next);
+    blogc_toctree_free(h);
+    free(html);
+}
+
+
+static void
+test_content_parse_headers_crlf(void **state)
+{
+    bc_slist_t *h = NULL;
+    char *html = blogc_content_parse("# foo\r\n", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html, "<h1 id=\"foo\">foo</h1>\r\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "foo");
+    assert_null(h->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse(
+        "# foo\r\n"
+        "## bar\r\n"
+        "### baz", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html,
+        "<h1 id=\"foo\">foo</h1>\r\n"
+        "<h2 id=\"bar\">bar</h2>\r\n"
+        "<h3 id=\"baz\">baz</h3>\r\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "foo");
+    assert_non_null(h->next);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->slug, "bar");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->text, "bar");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->next->data)->level, 3);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->slug, "baz");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->text, "baz");
+    assert_null(h->next->next->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse(
+        "# foo\r\n"
+        "## bar\r\n"
+        "### baz\r\n", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html,
+        "<h1 id=\"foo\">foo</h1>\r\n"
+        "<h2 id=\"bar\">bar</h2>\r\n"
+        "<h3 id=\"baz\">baz</h3>\r\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "foo");
+    assert_non_null(h->next);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->slug, "bar");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->text, "bar");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->next->data)->level, 3);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->slug, "baz");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->text, "baz");
+    assert_null(h->next->next->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse(
+        "## bar\r\n"
+        "# foo\r\n"
+        "### baz", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html,
+        "<h2 id=\"bar\">bar</h2>\r\n"
+        "<h1 id=\"foo\">foo</h1>\r\n"
+        "<h3 id=\"baz\">baz</h3>\r\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "bar");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "bar");
+    assert_non_null(h->next);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->text, "foo");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->next->data)->level, 3);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->slug, "baz");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->text, "baz");
+    assert_null(h->next->next->next);
+    blogc_toctree_free(h);
+    h = NULL;
+    free(html);
+    html = blogc_content_parse(
+        "## bar\r\n"
+        "# foo\r\n"
+        "### baz\r\n", NULL, NULL, NULL, NULL, &h);
+    assert_non_null(html);
+    assert_string_equal(html,
+        "<h2 id=\"bar\">bar</h2>\r\n"
+        "<h1 id=\"foo\">foo</h1>\r\n"
+        "<h3 id=\"baz\">baz</h3>\r\n");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->slug, "bar");
+    assert_string_equal(((blogc_toctree_header_t*) h->data)->text, "bar");
+    assert_non_null(h->next);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->slug, "foo");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->data)->text, "foo");
+    assert_non_null(h);
+    assert_int_equal(((blogc_toctree_header_t*) h->next->next->data)->level, 3);
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->slug, "baz");
+    assert_string_equal(((blogc_toctree_header_t*) h->next->next->data)->text, "baz");
+    assert_null(h->next->next->next);
+    blogc_toctree_free(h);
+    free(html);
+}
+
+
 static void
 test_content_parse_description(void **state)
 {
@@ -1316,7 +1610,7 @@ test_content_parse_description(void **state)
     char *html = blogc_content_parse(
         "# foo\n"
         "\n"
-        "bar", NULL, NULL, &d);
+        "bar", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\n"
@@ -1329,7 +1623,7 @@ test_content_parse_description(void **state)
     html = blogc_content_parse(
         "# foo\n"
         "\n"
-        "bar\n", NULL, NULL, &d);
+        "bar\n", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\n"
@@ -1343,7 +1637,7 @@ test_content_parse_description(void **state)
         "# foo\n"
         "\n"
         "qwe\n"
-        "bar\n", NULL, NULL, &d);
+        "bar\n", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\n"
@@ -1359,7 +1653,7 @@ test_content_parse_description(void **state)
         "\n"
         "> qwe\n"
         "\n"
-        "bar\n", NULL, NULL, &d);
+        "bar\n", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\n"
@@ -1377,7 +1671,7 @@ test_content_parse_description(void **state)
         "> qwe\n"
         "> zxc\n"
         "\n"
-        "bar\n", NULL, NULL, &d);
+        "bar\n", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\n"
@@ -1399,7 +1693,7 @@ test_content_parse_description_crlf(void **state)
     char *html = blogc_content_parse(
         "# foo\r\n"
         "\r\n"
-        "bar", NULL, NULL, &d);
+        "bar", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\r\n"
@@ -1412,7 +1706,7 @@ test_content_parse_description_crlf(void **state)
     html = blogc_content_parse(
         "# foo\r\n"
         "\r\n"
-        "bar\r\n", NULL, NULL, &d);
+        "bar\r\n", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\r\n"
@@ -1426,7 +1720,7 @@ test_content_parse_description_crlf(void **state)
         "# foo\r\n"
         "\r\n"
         "qwe\r\n"
-        "bar\r\n", NULL, NULL, &d);
+        "bar\r\n", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\r\n"
@@ -1442,7 +1736,7 @@ test_content_parse_description_crlf(void **state)
         "\r\n"
         "> qwe\r\n"
         "\r\n"
-        "bar\r\n", NULL, NULL, &d);
+        "bar\r\n", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\r\n"
@@ -1460,7 +1754,7 @@ test_content_parse_description_crlf(void **state)
         "> qwe\r\n"
         "> zxc\r\n"
         "\r\n"
-        "bar\r\n", NULL, NULL, &d);
+        "bar\r\n", NULL, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<h1 id=\"foo\">foo</h1>\r\n"
@@ -1475,6 +1769,107 @@ test_content_parse_description_crlf(void **state)
 }
 
 
+static void
+test_content_parse_endl(void **state)
+{
+    char *n = NULL;
+    char *html = blogc_content_parse("# test", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    free(html);
+    free(n);
+    n = "\n";
+    html = blogc_content_parse("# test", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    free(html);
+    n = NULL;
+    html = blogc_content_parse(
+        "# test\n", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    free(html);
+    free(n);
+    n = NULL;
+    html = blogc_content_parse(
+        "# test\n"
+        "foo", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    free(html);
+    free(n);
+    n = NULL;
+    html = blogc_content_parse(
+        "# test\n"
+        "foo\n", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    free(html);
+    free(n);
+    n = NULL;
+    html = blogc_content_parse(
+        "# test\n"
+        "foo\r\n", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\n");
+    free(html);
+    free(n);
+}
+
+
+static void
+test_content_parse_endl_crlf(void **state)
+{
+    char *n = "\r\n";
+    char *html = blogc_content_parse("# test", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\r\n");
+    free(html);
+    n = NULL;
+    html = blogc_content_parse(
+        "# test\r\n", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\r\n");
+    free(html);
+    free(n);
+    n = NULL;
+    html = blogc_content_parse(
+        "# test\r\n"
+        "foo", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\r\n");
+    free(html);
+    free(n);
+    n = NULL;
+    html = blogc_content_parse(
+        "# test\r\n"
+        "foo\r\n", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\r\n");
+    free(html);
+    free(n);
+    n = NULL;
+    html = blogc_content_parse(
+        "# test\r\n"
+        "foo\n", NULL, NULL, NULL, &n, NULL);
+    assert_non_null(html);
+    assert_non_null(n);
+    assert_string_equal(n, "\r\n");
+    free(html);
+    free(n);
+}
+
+
 static void
 test_content_parse_invalid_excerpt(void **state)
 {
@@ -1487,7 +1882,7 @@ test_content_parse_invalid_excerpt(void **state)
         "..\n"
         "\n"
         "guda\n"
-        "lol", &l, NULL, &d);
+        "lol", &l, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_int_equal(l, 0);
     assert_non_null(d);
@@ -1509,7 +1904,7 @@ test_content_parse_invalid_excerpt(void **state)
         "\n"
         "...\n"
         "guda\n"
-        "lol", &l, NULL, &d);
+        "lol", &l, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_int_equal(l, 0);
     assert_non_null(d);
@@ -1530,7 +1925,7 @@ test_content_parse_invalid_excerpt(void **state)
         "chunda..\n"
         "\n"
         "guda\n"
-        "lol", &l, NULL, &d);
+        "lol", &l, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_int_equal(l, 0);
     assert_non_null(d);
@@ -1550,7 +1945,7 @@ test_content_parse_invalid_excerpt(void **state)
         "chunda\n"
         "\n"
         "...guda\n"
-        "lol", &l, NULL, &d);
+        "lol", &l, NULL, &d, NULL, NULL);
     assert_non_null(html);
     assert_int_equal(l, 0);
     assert_non_null(d);
@@ -1571,7 +1966,7 @@ test_content_parse_invalid_header(void **state)
     char *html = blogc_content_parse(
         "asd\n"
         "\n"
-        "##bola\n", NULL, NULL, NULL);
+        "##bola\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>asd</p>\n"
@@ -1588,7 +1983,7 @@ test_content_parse_invalid_header_empty(void **state)
         "\n"
         "##\n"
         "\n"
-        "qwe\n", NULL, NULL, NULL);
+        "qwe\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>asd</p>\n"
@@ -1605,7 +2000,7 @@ test_content_parse_invalid_blockquote(void **state)
     char *html = blogc_content_parse(
         ">   asd\n"
         "> bola\n"
-        ">   foo\n", NULL, NULL, NULL);
+        ">   foo\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>&gt;   asd\n"
@@ -1614,7 +2009,7 @@ test_content_parse_invalid_blockquote(void **state)
     free(html);
     html = blogc_content_parse(
         ">   asd\n"
-        "> bola", NULL, NULL, NULL);
+        "> bola", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>&gt;   asd\n"
@@ -1629,7 +2024,7 @@ test_content_parse_invalid_code(void **state)
     char *html = blogc_content_parse(
         "    asd\n"
         "  bola\n"
-        "    foo\n", NULL, NULL, NULL);
+        "    foo\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>    asd\n"
@@ -1639,7 +2034,7 @@ test_content_parse_invalid_code(void **state)
     html = blogc_content_parse(
         "    asd\n"
         "  bola\n"
-        "    foo", NULL, NULL, NULL);
+        "    foo", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>    asd\n"
@@ -1652,11 +2047,11 @@ test_content_parse_invalid_code(void **state)
 static void
 test_content_parse_invalid_horizontal_rule(void **state)
 {
-    char *html = blogc_content_parse("** asd", NULL, NULL, NULL);
+    char *html = blogc_content_parse("** asd", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<p>** asd</p>\n");
     free(html);
-    html = blogc_content_parse("** asd\n", NULL, NULL, NULL);
+    html = blogc_content_parse("** asd\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<p>** asd</p>\n");
     free(html);
@@ -1668,7 +2063,7 @@ test_content_parse_invalid_unordered_list(void **state)
 {
     char *html = blogc_content_parse(
         "*  asd\n"
-        "1. qwe", NULL, NULL, NULL);
+        "1. qwe", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>*  asd\n"
@@ -1677,7 +2072,7 @@ test_content_parse_invalid_unordered_list(void **state)
     html = blogc_content_parse(
         "*  asd\n"
         "1. qwe\n"
-        "\n", NULL, NULL, NULL);
+        "\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>*  asd\n"
@@ -1685,7 +2080,7 @@ test_content_parse_invalid_unordered_list(void **state)
     free(html);
     html = blogc_content_parse(
         "*  asd\n"
-        "1. qwe\n", NULL, NULL, NULL);
+        "1. qwe\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>*  asd\n"
@@ -1694,7 +2089,7 @@ test_content_parse_invalid_unordered_list(void **state)
     free(html);
     html = blogc_content_parse(
         "* asd\n"
-        "1. qwe\n", NULL, NULL, NULL);
+        "1. qwe\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>* asd\n"
@@ -1707,7 +2102,7 @@ test_content_parse_invalid_unordered_list(void **state)
         "* asd\n"
         "1. qwe\n"
         "\n"
-        "poi\n", NULL, NULL, NULL);
+        "poi\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>chunda</p>\n"
@@ -1723,7 +2118,7 @@ test_content_parse_invalid_ordered_list(void **state)
 {
     char *html = blogc_content_parse(
         "1. asd\n"
-        "*  qwe", NULL, NULL, NULL);
+        "*  qwe", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>1. asd\n"
@@ -1732,7 +2127,7 @@ test_content_parse_invalid_ordered_list(void **state)
     html = blogc_content_parse(
         "1. asd\n"
         "*  qwe\n"
-        "\n", NULL, NULL, NULL);
+        "\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>1. asd\n"
@@ -1740,7 +2135,7 @@ test_content_parse_invalid_ordered_list(void **state)
     free(html);
     html = blogc_content_parse(
         "1. asd\n"
-        "*  qwe\n", NULL, NULL, NULL);
+        "*  qwe\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>1. asd\n"
@@ -1749,7 +2144,7 @@ test_content_parse_invalid_ordered_list(void **state)
     free(html);
     html = blogc_content_parse(
         "1. asd\n"
-        "*  qwe\n", NULL, NULL, NULL);
+        "*  qwe\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>1. asd\n"
@@ -1762,7 +2157,7 @@ test_content_parse_invalid_ordered_list(void **state)
         "1. asd\n"
         "*  qwe\n"
         "\n"
-        "poi\n", NULL, NULL, NULL);
+        "poi\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>chunda</p>\n"
@@ -1772,7 +2167,7 @@ test_content_parse_invalid_ordered_list(void **state)
     free(html);
     html = blogc_content_parse(
         "1 asd\n"
-        "* qwe\n", NULL, NULL, NULL);
+        "* qwe\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>1 asd\n"
@@ -1780,7 +2175,7 @@ test_content_parse_invalid_ordered_list(void **state)
     free(html);
     html = blogc_content_parse(
         "a. asd\n"
-        "2. qwe\n", NULL, NULL, NULL);
+        "2. qwe\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>a. asd\n"
@@ -1788,18 +2183,18 @@ test_content_parse_invalid_ordered_list(void **state)
     free(html);
     html = blogc_content_parse(
         "1.\nasd\n"
-        "2. qwe\n", NULL, NULL, NULL);
+        "2. qwe\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html,
         "<p>1.\n"
         "asd\n"
         "2. qwe</p>\n");
     free(html);
-    html = blogc_content_parse("1.\n", NULL, NULL, NULL);
+    html = blogc_content_parse("1.\n", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<p>1.</p>\n");
     free(html);
-    html = blogc_content_parse("1 ", NULL, NULL, NULL);
+    html = blogc_content_parse("1 ", NULL, NULL, NULL, NULL, NULL);
     assert_non_null(html);
     assert_string_equal(html, "<p>1 </p>\n");
     free(html);
@@ -2365,8 +2760,12 @@ main(void)
         unit_test(test_content_parse_ordered_list_crlf),
         unit_test(test_content_parse_first_header),
         unit_test(test_content_parse_first_header_crlf),
+        unit_test(test_content_parse_headers),
+        unit_test(test_content_parse_headers_crlf),
         unit_test(test_content_parse_description),
         unit_test(test_content_parse_description_crlf),
+        unit_test(test_content_parse_endl),
+        unit_test(test_content_parse_endl_crlf),
         unit_test(test_content_parse_invalid_excerpt),
         unit_test(test_content_parse_invalid_header),
         unit_test(test_content_parse_invalid_header_empty),
diff --git a/tests/blogc/check_loader.c b/tests/blogc/check_loader.c
index d65f418..cded0ae 100644
--- a/tests/blogc/check_loader.c
+++ b/tests/blogc/check_loader.c
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -100,7 +100,8 @@ test_source_parse_from_file(void **state)
         "ASD: 123\n"
         "--------\n"
         "bola"));
-    bc_trie_t *t = blogc_source_parse_from_file("bola.txt", &err);
+    bc_trie_t *c = bc_trie_new(free);
+    bc_trie_t *t = blogc_source_parse_from_file(c, "bola.txt", &err);
     assert_null(err);
     assert_non_null(t);
     assert_int_equal(bc_trie_size(t), 6);
@@ -110,6 +111,83 @@ test_source_parse_from_file(void **state)
     assert_string_equal(bc_trie_lookup(t, "CONTENT"), "<p>bola</p>\n");
     assert_string_equal(bc_trie_lookup(t, "RAW_CONTENT"), "bola");
     assert_string_equal(bc_trie_lookup(t, "DESCRIPTION"), "bola");
+    bc_trie_free(c);
+    bc_trie_free(t);
+}
+
+
+static void
+test_source_parse_from_file_maxdepth(void **state)
+{
+    bc_error_t *err = NULL;
+    will_return(__wrap_bc_file_get_contents, "bola.txt");
+    will_return(__wrap_bc_file_get_contents, bc_strdup(
+        "ASD: 123\n"
+        "TOCTREE_MAXDEPTH: 1\n"
+        "--------\n"
+        "### bola\n"
+        "#### guda"));
+    bc_trie_t *c = bc_trie_new(free);
+    bc_trie_insert(c, "TOCTREE_MAXDEPTH", bc_strdup("-1"));
+    bc_trie_t *t = blogc_source_parse_from_file(c, "bola.txt", &err);
+    assert_null(err);
+    assert_non_null(t);
+    assert_int_equal(bc_trie_size(t), 8);
+    assert_string_equal(bc_trie_lookup(t, "ASD"), "123");
+    assert_string_equal(bc_trie_lookup(t, "TOCTREE_MAXDEPTH"), "1");
+    assert_string_equal(bc_trie_lookup(t, "FILENAME"), "bola");
+    assert_string_equal(bc_trie_lookup(t, "EXCERPT"),
+        "<h3 id=\"bola\">bola</h3>\n"
+        "<h4 id=\"guda\">guda</h4>\n");
+    assert_string_equal(bc_trie_lookup(t, "CONTENT"),
+        "<h3 id=\"bola\">bola</h3>\n"
+        "<h4 id=\"guda\">guda</h4>\n");
+    assert_string_equal(bc_trie_lookup(t, "RAW_CONTENT"),
+        "### bola\n"
+        "#### guda");
+    assert_string_equal(bc_trie_lookup(t, "FIRST_HEADER"), "bola");
+    assert_string_equal(bc_trie_lookup(t, "TOCTREE"),
+        "<ul>\n"
+        "    <li><a href=\"#bola\">bola</a></li>\n"
+        "</ul>\n");
+    bc_trie_free(c);
+    bc_trie_free(t);
+}
+
+
+static void
+test_source_parse_from_file_maxdepth2(void **state)
+{
+    bc_error_t *err = NULL;
+    will_return(__wrap_bc_file_get_contents, "bola.txt");
+    will_return(__wrap_bc_file_get_contents, bc_strdup(
+        "ASD: 123\n"
+        "--------\n"
+        "### bola\n"
+        "#### guda"));
+    bc_trie_t *c = bc_trie_new(free);
+    bc_trie_insert(c, "TOCTREE_MAXDEPTH", bc_strdup("1"));
+    bc_trie_t *t = blogc_source_parse_from_file(c, "bola.txt", &err);
+    assert_null(err);
+    assert_non_null(t);
+    assert_int_equal(bc_trie_size(t), 7);
+    assert_string_equal(bc_trie_lookup(t, "ASD"), "123");
+    assert_string_equal(bc_trie_lookup(t, "FILENAME"), "bola");
+    assert_string_equal(bc_trie_lookup(t, "EXCERPT"),
+        "<h3 id=\"bola\">bola</h3>\n"
+        "<h4 id=\"guda\">guda</h4>\n");
+    assert_string_equal(bc_trie_lookup(t, "CONTENT"),
+        "<h3 id=\"bola\">bola</h3>\n"
+        "<h4 id=\"guda\">guda</h4>\n");
+    assert_string_equal(bc_trie_lookup(t, "RAW_CONTENT"),
+        "### bola\n"
+        "#### guda");
+    assert_string_equal(bc_trie_lookup(t, "FIRST_HEADER"), "bola");
+    assert_string_equal(bc_trie_lookup(t, "TOCTREE"),
+        "<ul>\n"
+        "    <li><a href=\"#bola\">bola</a></li>\n"
+        "</ul>\n");
+    bc_trie_free(c);
     bc_trie_free(t);
 }
 
@@ -120,9 +198,11 @@ test_source_parse_from_file_null(void **state)
     bc_error_t *err = NULL;
     will_return(__wrap_bc_file_get_contents, "bola.txt");
     will_return(__wrap_bc_file_get_contents, NULL);
-    bc_trie_t *t = blogc_source_parse_from_file("bola.txt", &err);
+    bc_trie_t *c = bc_trie_new(free);
+    bc_trie_t *t = blogc_source_parse_from_file(c, "bola.txt", &err);
     assert_null(err);
     assert_null(t);
+    bc_trie_free(c);
 }
 
 
@@ -947,6 +1027,8 @@ main(void)
         unit_test(test_template_parse_from_file),
         unit_test(test_template_parse_from_file_null),
         unit_test(test_source_parse_from_file),
+        unit_test(test_source_parse_from_file_maxdepth),
+        unit_test(test_source_parse_from_file_maxdepth2),
         unit_test(test_source_parse_from_file_null),
         unit_test(test_source_parse_from_files),
         unit_test(test_source_parse_from_files_filter_sort),
diff --git a/tests/blogc/check_renderer.c b/tests/blogc/check_renderer.c
index 6486990..3c207a7 100644
--- a/tests/blogc/check_renderer.c
+++ b/tests/blogc/check_renderer.c
@@ -47,7 +47,7 @@ create_sources(size_t count)
     bc_error_t *err = NULL;
     bc_slist_t *l = NULL;
     for (size_t i = 0; i < count; i++) {
-        l = bc_slist_append(l, blogc_source_parse(s[i], strlen(s[i]), &err));
+        l = bc_slist_append(l, blogc_source_parse(s[i], strlen(s[i]), -1, &err));
         assert_null(err);
     }
     assert_int_equal(bc_slist_length(l), count);
diff --git a/tests/blogc/check_source_parser.c b/tests/blogc/check_source_parser.c
index f758522..c1bf2c7 100644
--- a/tests/blogc/check_source_parser.c
+++ b/tests/blogc/check_source_parser.c
@@ -1,6 +1,6 @@
 /*
  * blogc: A blog compiler.
- * Copyright (C) 2014-2019 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
  *
  * This program can be distributed under the terms of the BSD License.
  * See the file LICENSE.
@@ -27,7 +27,7 @@ test_source_parse(void **state)
         "\n"
         "bola\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(err);
     assert_non_null(source);
     assert_int_equal(bc_trie_size(source), 7);
@@ -45,6 +45,7 @@ test_source_parse(void **state)
         "bola\n");
     assert_string_equal(bc_trie_lookup(source, "FIRST_HEADER"), "This is a test");
     assert_string_equal(bc_trie_lookup(source, "DESCRIPTION"), "bola");
+    assert_null(bc_trie_lookup(source, "TOCTREE"));
     bc_trie_free(source);
 }
 
@@ -60,10 +61,10 @@ test_source_parse_crlf(void **state)
         "\r\n"
         "bola\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 1, &err);
     assert_null(err);
     assert_non_null(source);
-    assert_int_equal(bc_trie_size(source), 7);
+    assert_int_equal(bc_trie_size(source), 8);
     assert_string_equal(bc_trie_lookup(source, "VAR1"), "asd asd");
     assert_string_equal(bc_trie_lookup(source, "VAR2"), "123chunda");
     assert_string_equal(bc_trie_lookup(source, "EXCERPT"),
@@ -78,6 +79,10 @@ test_source_parse_crlf(void **state)
         "bola\r\n");
     assert_string_equal(bc_trie_lookup(source, "FIRST_HEADER"), "This is a test");
     assert_string_equal(bc_trie_lookup(source, "DESCRIPTION"), "bola");
+    assert_string_equal(bc_trie_lookup(source, "TOCTREE"),
+        "<ul>\r\n"
+        "    <li><a href=\"#this-is-a-test\">This is a test</a></li>\r\n"
+        "</ul>\r\n");
     bc_trie_free(source);
 }
 
@@ -95,10 +100,10 @@ test_source_parse_with_spaces(void **state)
         "\n"
         "bola\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), -1, &err);
     assert_null(err);
     assert_non_null(source);
-    assert_int_equal(bc_trie_size(source), 7);
+    assert_int_equal(bc_trie_size(source), 8);
     assert_string_equal(bc_trie_lookup(source, "VAR1"), "chunda");
     assert_string_equal(bc_trie_lookup(source, "BOLA"), "guda");
     assert_string_equal(bc_trie_lookup(source, "EXCERPT"),
@@ -113,6 +118,10 @@ test_source_parse_with_spaces(void **state)
         "bola\n");
     assert_string_equal(bc_trie_lookup(source, "FIRST_HEADER"), "This is a test");
     assert_string_equal(bc_trie_lookup(source, "DESCRIPTION"), "bola");
+    assert_string_equal(bc_trie_lookup(source, "TOCTREE"),
+        "<ul>\n"
+        "    <li><a href=\"#this-is-a-test\">This is a test</a></li>\n"
+        "</ul>\n");
     bc_trie_free(source);
 }
 
@@ -133,7 +142,7 @@ test_source_parse_with_excerpt(void **state)
         "guda\n"
         "yay";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(err);
     assert_non_null(source);
     assert_int_equal(bc_trie_size(source), 7);
@@ -158,6 +167,7 @@ test_source_parse_with_excerpt(void **state)
         "yay");
     assert_string_equal(bc_trie_lookup(source, "FIRST_HEADER"), "This is a test");
     assert_string_equal(bc_trie_lookup(source, "DESCRIPTION"), "bola");
+    assert_null(bc_trie_lookup(source, "TOCTREE"));
     bc_trie_free(source);
 }
 
@@ -174,7 +184,7 @@ test_source_parse_with_first_header(void **state)
         "\n"
         "bola\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(err);
     assert_non_null(source);
     assert_int_equal(bc_trie_size(source), 7);
@@ -192,6 +202,7 @@ test_source_parse_with_first_header(void **state)
         "bola\n");
     assert_string_equal(bc_trie_lookup(source, "FIRST_HEADER"), "THIS IS CHUNDA!");
     assert_string_equal(bc_trie_lookup(source, "DESCRIPTION"), "bola");
+    assert_null(bc_trie_lookup(source, "TOCTREE"));
     bc_trie_free(source);
 }
 
@@ -208,7 +219,7 @@ test_source_parse_with_description(void **state)
         "\n"
         "bola\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(err);
     assert_non_null(source);
     assert_int_equal(bc_trie_size(source), 7);
@@ -226,6 +237,172 @@ test_source_parse_with_description(void **state)
         "bola\n");
     assert_string_equal(bc_trie_lookup(source, "FIRST_HEADER"), "This is a test");
     assert_string_equal(bc_trie_lookup(source, "DESCRIPTION"), "huehuehuebrbr");
+    assert_null(bc_trie_lookup(source, "TOCTREE"));
+    bc_trie_free(source);
+}
+
+
+static void
+test_source_parse_with_toctree(void **state)
+{
+    const char *a =
+        "VAR1: asd asd\n"
+        "VAR2: 123chunda\n"
+        "----------\n"
+        "### asd\n"
+        "### qwe\n"
+        "## zxc\n"
+        "### rty\n"
+        "#### bnm\n"
+        "### asd\n";
+    bc_error_t *err = NULL;
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), -1, &err);
+    assert_null(err);
+    assert_non_null(source);
+    assert_int_equal(bc_trie_size(source), 7);
+    assert_string_equal(bc_trie_lookup(source, "VAR1"), "asd asd");
+    assert_string_equal(bc_trie_lookup(source, "VAR2"), "123chunda");
+    assert_string_equal(bc_trie_lookup(source, "EXCERPT"),
+        "<h3 id=\"asd\">asd</h3>\n"
+        "<h3 id=\"qwe\">qwe</h3>\n"
+        "<h2 id=\"zxc\">zxc</h2>\n"
+        "<h3 id=\"rty\">rty</h3>\n"
+        "<h4 id=\"bnm\">bnm</h4>\n"
+        "<h3 id=\"asd\">asd</h3>\n");
+    assert_string_equal(bc_trie_lookup(source, "CONTENT"),
+        "<h3 id=\"asd\">asd</h3>\n"
+        "<h3 id=\"qwe\">qwe</h3>\n"
+        "<h2 id=\"zxc\">zxc</h2>\n"
+        "<h3 id=\"rty\">rty</h3>\n"
+        "<h4 id=\"bnm\">bnm</h4>\n"
+        "<h3 id=\"asd\">asd</h3>\n");
+    assert_string_equal(bc_trie_lookup(source, "RAW_CONTENT"),
+        "### asd\n"
+        "### qwe\n"
+        "## zxc\n"
+        "### rty\n"
+        "#### bnm\n"
+        "### asd\n");
+    assert_string_equal(bc_trie_lookup(source, "FIRST_HEADER"), "asd");
+    assert_string_equal(bc_trie_lookup(source, "TOCTREE"),
+        "<ul>\n"
+        "    <ul>\n"
+        "        <li><a href=\"#asd\">asd</a></li>\n"
+        "        <li><a href=\"#qwe\">qwe</a></li>\n"
+        "    </ul>\n"
+        "    <li><a href=\"#zxc\">zxc</a></li>\n"
+        "    <ul>\n"
+        "        <li><a href=\"#rty\">rty</a></li>\n"
+        "        <ul>\n"
+        "            <li><a href=\"#bnm\">bnm</a></li>\n"
+        "        </ul>\n"
+        "        <li><a href=\"#asd\">asd</a></li>\n"
+        "    </ul>\n"
+        "</ul>\n");
+    bc_trie_free(source);
+}
+
+
+static void
+test_source_parse_with_toctree_noheader(void **state)
+{
+    const char *a =
+        "VAR1: asd asd\n"
+        "VAR2: 123chunda\n"
+        "----------\n"
+        "asd\n";
+    bc_error_t *err = NULL;
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), -1, &err);
+    assert_null(err);
+    assert_non_null(source);
+    assert_int_equal(bc_trie_size(source), 6);
+    assert_string_equal(bc_trie_lookup(source, "VAR1"), "asd asd");
+    assert_string_equal(bc_trie_lookup(source, "VAR2"), "123chunda");
+    assert_string_equal(bc_trie_lookup(source, "EXCERPT"),
+        "<p>asd</p>\n");
+    assert_string_equal(bc_trie_lookup(source, "CONTENT"),
+        "<p>asd</p>\n");
+    assert_string_equal(bc_trie_lookup(source, "RAW_CONTENT"),
+        "asd\n");
+    assert_null(bc_trie_lookup(source, "FIRST_HEADER"));
+    assert_null(bc_trie_lookup(source, "TOCTREE"));
+    bc_trie_free(source);
+}
+
+
+static void
+test_source_parse_with_toctree_maxdepth1(void **state)
+{
+    const char *a =
+        "VAR1: asd asd\n"
+        "VAR2: 123chunda\n"
+        "----------\n"
+        "### asd\n"
+        "### qwe\n"
+        "## zxc\n"
+        "### rty\n"
+        "#### bnm\n"
+        "### asd\n";
+    bc_error_t *err = NULL;
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 1, &err);
+    assert_null(err);
+    assert_non_null(source);
+    assert_int_equal(bc_trie_size(source), 7);
+    assert_string_equal(bc_trie_lookup(source, "VAR1"), "asd asd");
+    assert_string_equal(bc_trie_lookup(source, "VAR2"), "123chunda");
+    assert_string_equal(bc_trie_lookup(source, "EXCERPT"),
+        "<h3 id=\"asd\">asd</h3>\n"
+        "<h3 id=\"qwe\">qwe</h3>\n"
+        "<h2 id=\"zxc\">zxc</h2>\n"
+        "<h3 id=\"rty\">rty</h3>\n"
+        "<h4 id=\"bnm\">bnm</h4>\n"
+        "<h3 id=\"asd\">asd</h3>\n");
+    assert_string_equal(bc_trie_lookup(source, "CONTENT"),
+        "<h3 id=\"asd\">asd</h3>\n"
+        "<h3 id=\"qwe\">qwe</h3>\n"
+        "<h2 id=\"zxc\">zxc</h2>\n"
+        "<h3 id=\"rty\">rty</h3>\n"
+        "<h4 id=\"bnm\">bnm</h4>\n"
+        "<h3 id=\"asd\">asd</h3>\n");
+    assert_string_equal(bc_trie_lookup(source, "RAW_CONTENT"),
+        "### asd\n"
+        "### qwe\n"
+        "## zxc\n"
+        "### rty\n"
+        "#### bnm\n"
+        "### asd\n");
+    assert_string_equal(bc_trie_lookup(source, "FIRST_HEADER"), "asd");
+    assert_string_equal(bc_trie_lookup(source, "TOCTREE"),
+        "<ul>\n"
+        "    <li><a href=\"#zxc\">zxc</a></li>\n"
+        "</ul>\n");
+    bc_trie_free(source);
+}
+
+
+static void
+test_source_parse_with_toctree_maxdepth_invalid(void **state)
+{
+    const char *a =
+        "VAR1: asd asd\n"
+        "VAR2: 123chunda\n"
+        "TOCTREE_MAXDEPTH: bola\n"
+        "----------\n"
+        "### asd\n"
+        "### qwe\n"
+        "## zxc\n"
+        "### rty\n"
+        "#### bnm\n"
+        "### asd\n";
+    bc_error_t *err = NULL;
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 1, &err);
+    assert_non_null(err);
+    assert_null(source);
+    assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
+    assert_string_equal(err->msg,
+        "Invalid value for 'TOCTREE_MAXDEPTH' variable: bola.\n"
+        "Error occurred near line 10, position 8: ### asd");
+    bc_error_free(err);
     bc_trie_free(source);
 }
 
@@ -235,7 +412,7 @@ test_source_parse_config_empty(void **state)
 {
     const char *a = "";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -250,7 +427,7 @@ test_source_parse_config_invalid_key(void **state)
 {
     const char *a = "bola: guda";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
     assert_string_equal(err->msg,
@@ -266,7 +443,7 @@ test_source_parse_config_no_key(void **state)
 {
     const char *a = "BOLa";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
     assert_string_equal(err->msg,
@@ -282,7 +459,7 @@ test_source_parse_config_no_key2(void **state)
 {
     const char *a = "BOLA";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
     assert_string_equal(err->msg,
@@ -299,10 +476,11 @@ test_source_parse_config_no_value(void **state)
     // this is a special case, not an error
     const char *a = "BOLA:\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_non_null(source);
     assert_null(err);
     assert_string_equal(bc_trie_lookup(source, "BOLA"), "");
+    assert_null(bc_trie_lookup(source, "TOCTREE"));
     bc_trie_free(source);
 }
 
@@ -312,7 +490,7 @@ test_source_parse_config_no_value2(void **state)
 {
     const char *a = "BOLA:";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -329,7 +507,7 @@ test_source_parse_config_reserved_name(void **state)
 {
     const char *a = "FILENAME: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -346,7 +524,7 @@ test_source_parse_config_reserved_name2(void **state)
 {
     const char *a = "CONTENT: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -363,7 +541,7 @@ test_source_parse_config_reserved_name3(void **state)
 {
     const char *a = "DATE_FORMATTED: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -380,7 +558,7 @@ test_source_parse_config_reserved_name4(void **state)
 {
     const char *a = "DATE_FIRST_FORMATTED: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -397,7 +575,7 @@ test_source_parse_config_reserved_name5(void **state)
 {
     const char *a = "DATE_LAST_FORMATTED: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -414,7 +592,7 @@ test_source_parse_config_reserved_name6(void **state)
 {
     const char *a = "PAGE_FIRST: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -431,7 +609,7 @@ test_source_parse_config_reserved_name7(void **state)
 {
     const char *a = "PAGE_PREVIOUS: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -448,7 +626,7 @@ test_source_parse_config_reserved_name8(void **state)
 {
     const char *a = "PAGE_CURRENT: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -465,7 +643,7 @@ test_source_parse_config_reserved_name9(void **state)
 {
     const char *a = "PAGE_NEXT: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -482,7 +660,7 @@ test_source_parse_config_reserved_name10(void **state)
 {
     const char *a = "PAGE_LAST: asd\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -499,7 +677,7 @@ test_source_parse_config_reserved_name11(void **state)
 {
     const char *a = "BLOGC_VERSION: 1.0\r\n";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -516,7 +694,7 @@ test_source_parse_config_value_no_line_ending(void **state)
 {
     const char *a = "BOLA: asd";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -533,7 +711,7 @@ test_source_parse_invalid_separator(void **state)
 {
     const char *a = "BOLA: asd\n---#";
     bc_error_t *err = NULL;
-    bc_trie_t *source = blogc_source_parse(a, strlen(a), &err);
+    bc_trie_t *source = blogc_source_parse(a, strlen(a), 0, &err);
     assert_null(source);
     assert_non_null(err);
     assert_int_equal(err->type, BLOGC_ERROR_SOURCE_PARSER);
@@ -555,6 +733,10 @@ main(void)
         unit_test(test_source_parse_with_excerpt),
         unit_test(test_source_parse_with_first_header),
         unit_test(test_source_parse_with_description),
+        unit_test(test_source_parse_with_toctree),
+        unit_test(test_source_parse_with_toctree_noheader),
+        unit_test(test_source_parse_with_toctree_maxdepth1),
+        unit_test(test_source_parse_with_toctree_maxdepth_invalid),
         unit_test(test_source_parse_config_empty),
         unit_test(test_source_parse_config_invalid_key),
         unit_test(test_source_parse_config_no_key),
diff --git a/tests/blogc/check_toctree.c b/tests/blogc/check_toctree.c
new file mode 100644
index 0000000..c5cb918
--- /dev/null
+++ b/tests/blogc/check_toctree.c
@@ -0,0 +1,234 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2014-2020 Rafael G. Martins <rafael@rafaelmartins.eng.br>
+ *
+ * This program can be distributed under the terms of the BSD License.
+ * See the file LICENSE.
+ */
+
+#include <stdarg.h>
+#include <stddef.h>
+#include <setjmp.h>
+#include <cmocka.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "../../src/common/utils.h"
+#include "../../src/blogc/toctree.h"
+
+
+static void
+test_toctree_append(void **state)
+{
+    bc_slist_t *l = NULL;
+
+    l = blogc_toctree_append(l, 0, "", "");
+    assert_null(l);
+
+    l = blogc_toctree_append(l, 1, "f1", "bola");
+    assert_non_null(l);
+    assert_int_equal(((blogc_toctree_header_t*) l->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) l->data)->slug, "f1");
+    assert_string_equal(((blogc_toctree_header_t*) l->data)->text, "bola");
+    assert_null(l->next);
+
+    l = blogc_toctree_append(l, 2, "f2", "guda");
+    assert_non_null(l);
+    assert_int_equal(((blogc_toctree_header_t*) l->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) l->data)->slug, "f1");
+    assert_string_equal(((blogc_toctree_header_t*) l->data)->text, "bola");
+    assert_non_null(l->next);
+    assert_int_equal(((blogc_toctree_header_t*) l->next->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) l->next->data)->slug, "f2");
+    assert_string_equal(((blogc_toctree_header_t*) l->next->data)->text, "guda");
+    assert_null(l->next->next);
+
+    l = blogc_toctree_append(l, 0, "", "");
+    assert_non_null(l);
+    assert_int_equal(((blogc_toctree_header_t*) l->data)->level, 1);
+    assert_string_equal(((blogc_toctree_header_t*) l->data)->slug, "f1");
+    assert_string_equal(((blogc_toctree_header_t*) l->data)->text, "bola");
+    assert_non_null(l->next);
+    assert_int_equal(((blogc_toctree_header_t*) l->next->data)->level, 2);
+    assert_string_equal(((blogc_toctree_header_t*) l->next->data)->slug, "f2");
+    assert_string_equal(((blogc_toctree_header_t*) l->next->data)->text, "guda");
+    assert_null(l->next->next);
+
+    blogc_toctree_free(l);
+}
+
+
+static void
+test_toctree_render(void **state)
+{
+    bc_slist_t *l = NULL;
+    assert_null(blogc_toctree_render(l, 6, NULL));
+
+    l = blogc_toctree_append(l, 1, "f1", "bola");
+    l = blogc_toctree_append(l, 1, "f2", "guda");
+    l = blogc_toctree_append(l, 2, "f3", "asd");
+    l = blogc_toctree_append(l, 3, NULL, "foo");
+    l = blogc_toctree_append(l, 1, "f5", NULL);
+    l = blogc_toctree_append(l, 5, NULL, NULL);
+    char *o = blogc_toctree_render(l, -2, NULL);
+    assert_string_equal(o,
+        "<ul>\n"
+        "    <li><a href=\"#f1\">bola</a></li>\n"
+        "    <li><a href=\"#f2\">guda</a></li>\n"
+        "    <ul>\n"
+        "        <li><a href=\"#f3\">asd</a></li>\n"
+        "        <ul>\n"
+        "            <li>foo</li>\n"
+        "        </ul>\n"
+        "    </ul>\n"
+        "    <li><a href=\"#f5\"></a></li>\n"
+        "    <ul>\n"
+        "        <ul>\n"
+        "            <ul>\n"
+        "                <ul>\n"
+        "                    <li></li>\n"
+        "                </ul>\n"
+        "            </ul>\n"
+        "        </ul>\n"
+        "    </ul>\n"
+        "</ul>\n");
+    free(o);
+
+    o = blogc_toctree_render(l, -1, "\n");
+    assert_string_equal(o,
+        "<ul>\n"
+        "    <li><a href=\"#f1\">bola</a></li>\n"
+        "    <li><a href=\"#f2\">guda</a></li>\n"
+        "    <ul>\n"
+        "        <li><a href=\"#f3\">asd</a></li>\n"
+        "        <ul>\n"
+        "            <li>foo</li>\n"
+        "        </ul>\n"
+        "    </ul>\n"
+        "    <li><a href=\"#f5\"></a></li>\n"
+        "    <ul>\n"
+        "        <ul>\n"
+        "            <ul>\n"
+        "                <ul>\n"
+        "                    <li></li>\n"
+        "                </ul>\n"
+        "            </ul>\n"
+        "        </ul>\n"
+        "    </ul>\n"
+        "</ul>\n");
+    free(o);
+
+    o = blogc_toctree_render(l, 6, "\r\n");
+    assert_string_equal(o,
+        "<ul>\r\n"
+        "    <li><a href=\"#f1\">bola</a></li>\r\n"
+        "    <li><a href=\"#f2\">guda</a></li>\r\n"
+        "    <ul>\r\n"
+        "        <li><a href=\"#f3\">asd</a></li>\r\n"
+        "        <ul>\r\n"
+        "            <li>foo</li>\r\n"
+        "        </ul>\r\n"
+        "    </ul>\r\n"
+        "    <li><a href=\"#f5\"></a></li>\r\n"
+        "    <ul>\r\n"
+        "        <ul>\r\n"
+        "            <ul>\r\n"
+        "                <ul>\r\n"
+        "                    <li></li>\r\n"
+        "                </ul>\r\n"
+        "            </ul>\r\n"
+        "        </ul>\r\n"
+        "    </ul>\r\n"
+        "</ul>\r\n");
+    free(o);
+
+    o = blogc_toctree_render(l, 5, NULL);
+    assert_string_equal(o,
+        "<ul>\n"
+        "    <li><a href=\"#f1\">bola</a></li>\n"
+        "    <li><a href=\"#f2\">guda</a></li>\n"
+        "    <ul>\n"
+        "        <li><a href=\"#f3\">asd</a></li>\n"
+        "        <ul>\n"
+        "            <li>foo</li>\n"
+        "        </ul>\n"
+        "    </ul>\n"
+        "    <li><a href=\"#f5\"></a></li>\n"
+        "    <ul>\n"
+        "        <ul>\n"
+        "            <ul>\n"
+        "                <ul>\n"
+        "                    <li></li>\n"
+        "                </ul>\n"
+        "            </ul>\n"
+        "        </ul>\n"
+        "    </ul>\n"
+        "</ul>\n");
+    free(o);
+
+    o = blogc_toctree_render(l, 4, "\n");
+    assert_string_equal(o,
+        "<ul>\n"
+        "    <li><a href=\"#f1\">bola</a></li>\n"
+        "    <li><a href=\"#f2\">guda</a></li>\n"
+        "    <ul>\n"
+        "        <li><a href=\"#f3\">asd</a></li>\n"
+        "        <ul>\n"
+        "            <li>foo</li>\n"
+        "        </ul>\n"
+        "    </ul>\n"
+        "    <li><a href=\"#f5\"></a></li>\n"
+        "</ul>\n");
+    free(o);
+
+    o = blogc_toctree_render(l, 3, "\r\n");
+    assert_string_equal(o,
+        "<ul>\r\n"
+        "    <li><a href=\"#f1\">bola</a></li>\r\n"
+        "    <li><a href=\"#f2\">guda</a></li>\r\n"
+        "    <ul>\r\n"
+        "        <li><a href=\"#f3\">asd</a></li>\r\n"
+        "        <ul>\r\n"
+        "            <li>foo</li>\r\n"
+        "        </ul>\r\n"
+        "    </ul>\r\n"
+        "    <li><a href=\"#f5\"></a></li>\r\n"
+        "</ul>\r\n");
+    free(o);
+
+    o = blogc_toctree_render(l, 2, NULL);
+    assert_string_equal(o,
+        "<ul>\n"
+        "    <li><a href=\"#f1\">bola</a></li>\n"
+        "    <li><a href=\"#f2\">guda</a></li>\n"
+        "    <ul>\n"
+        "        <li><a href=\"#f3\">asd</a></li>\n"
+        "    </ul>\n"
+        "    <li><a href=\"#f5\"></a></li>\n"
+        "</ul>\n");
+    free(o);
+
+    o = blogc_toctree_render(l, 1, NULL);
+    assert_string_equal(o,
+        "<ul>\n"
+        "    <li><a href=\"#f1\">bola</a></li>\n"
+        "    <li><a href=\"#f2\">guda</a></li>\n"
+        "    <li><a href=\"#f5\"></a></li>\n"
+        "</ul>\n");
+    free(o);
+
+    assert_null(blogc_toctree_render(l, 0, NULL));
+
+    blogc_toctree_free(l);
+}
+
+
+int
+main(void)
+{
+    const UnitTest tests[] = {
+        unit_test(test_toctree_append),
+        unit_test(test_toctree_render),
+    };
+    return run_tests(tests);
+}
-- 
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