From 8cac2c3e3a61b64b9a9855dec413239bcec7f9d2 Mon Sep 17 00:00:00 2001
From: "Rafael G. Martins" <rafael@rafaelmartins.eng.br>
Date: Tue, 27 Dec 2016 02:29:54 +0100
Subject: make: implemented a build tool for blogc

so, this is basically what happens when you don't have anything better
to do in the christmas weekend. most of this code was written in the
last 2 or 3 days.

i'd like to thank the chivas brothers, the weather and my psychological
problems for this achievement.

on a serious note, this tool still needs a man page, more tests, and the
aws lambda function should be adapted to use it instead of (or together
with) make/busybox.

also, while talking about aws lambda, this tool can be nicely embedded
into the blogc binary, to produce a single "small" static binary for
usage in lambda ;)
---
 src/blogc-make/atom.c | 93 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 src/blogc-make/atom.c

(limited to 'src/blogc-make/atom.c')

diff --git a/src/blogc-make/atom.c b/src/blogc-make/atom.c
new file mode 100644
index 0000000..c7f98a5
--- /dev/null
+++ b/src/blogc-make/atom.c
@@ -0,0 +1,93 @@
+/*
+ * blogc: A blog compiler.
+ * Copyright (C) 2016 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 <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include "../common/error.h"
+#include "../common/utils.h"
+#include "settings.h"
+#include "atom.h"
+
+static const char atom_template[] =
+    "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
+    "<feed xmlns=\"http://www.w3.org/2005/Atom\">\n"
+    "  <title type=\"text\">{{ SITE_TITLE }}{%% ifdef FILTER_TAG %%} - "
+        "{{ FILTER_TAG }}{%% endif %%}</title>\n"
+    "  <id>{{ BASE_URL }}/%s{%% ifdef FILTER_TAG %%}/{{ FILTER_TAG }}"
+        "{%% endif %%}%s</id>\n"
+    "  <updated>{{ DATE_FIRST_FORMATTED }}</updated>\n"
+    "  <link href=\"{{ BASE_DOMAIN }}{{ BASE_URL }}/\" />\n"
+    "  <link href=\"{{ BASE_DOMAIN }}{{ BASE_URL }}/%s{%% ifdef FILTER_TAG %%}"
+        "/{{ FILTER_TAG }}{%% endif %%}%s\" rel=\"self\" />\n"
+    "  <author>\n"
+    "    <name>{{ AUTHOR_NAME }}</name>\n"
+    "    <email>{{ AUTHOR_EMAIL }}</email>\n"
+    "  </author>\n"
+    "  <subtitle type=\"text\">{{ SITE_TAGLINE }}</subtitle>\n"
+    "  {%% block listing %%}\n"
+    "  <entry>\n"
+    "    <title type=\"text\">{{ TITLE }}</title>\n"
+    "    <id>{{ BASE_URL }}/%s/{{ FILENAME }}/</id>\n"
+    "    <updated>{{ DATE_FORMATTED }}</updated>\n"
+    "    <published>{{ DATE_FORMATTED }}</published>\n"
+    "    <link href=\"{{ BASE_DOMAIN }}{{ BASE_URL }}/%s/{{ FILENAME }}/\" />\n"
+    "    <author>\n"
+    "      <name>{{ AUTHOR_NAME }}</name>\n"
+    "      <email>{{ AUTHOR_EMAIL }}</email>\n"
+    "    </author>\n"
+    "    <content type=\"html\"><![CDATA[{{ CONTENT }}]]></content>\n"
+    "  </entry>\n"
+    "  {%% endblock %%}\n"
+    "</feed>\n";
+
+
+char*
+bm_atom_deploy(bm_settings_t *settings, bc_error_t **err)
+{
+    if (err == NULL || *err != NULL)
+        return NULL;
+
+    // this is not really portable
+    char fname[] = "/tmp/blogc-make_XXXXXX";
+    int fd;
+    if (-1 == (fd = mkstemp(fname))) {
+        *err = bc_error_new_printf(BLOGC_MAKE_ERROR_ATOM,
+            "Failed to create temporary atom template: %s", strerror(errno));
+        return NULL;
+    }
+
+    const char *atom_prefix = bc_trie_lookup(settings->settings, "atom_prefix");
+    const char *atom_ext = bc_trie_lookup(settings->settings, "atom_ext");
+    const char *post_prefix = bc_trie_lookup(settings->settings, "post_prefix");
+
+    char *content = bc_strdup_printf(atom_template, atom_prefix, atom_ext,
+        atom_prefix, atom_ext, post_prefix, post_prefix);
+
+    if (-1 == write(fd, content, strlen(content))) {
+        *err = bc_error_new_printf(BLOGC_MAKE_ERROR_ATOM,
+            "Failed to write to temporary atom template: %s", strerror(errno));
+        free(content);
+        close(fd);
+        unlink(fname);
+        return NULL;
+    }
+
+    free(content);
+    close(fd);
+
+    return bc_strdup(fname);
+}
+
+
+void
+bm_atom_destroy(const char *fname)
+{
+    unlink(fname);
+}
-- 
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