Permalink
Browse files

Just remembered why symlinks are a terrible idea

  • Loading branch information...
1 parent 5f8ce6d commit 27616ac53414cd04ccc2455ce7022b6ff0774d33 @vmg committed Oct 12, 2012
View
@@ -3,21 +3,14 @@ require 'rake/clean'
require 'rake/extensiontask'
require 'digest/md5'
-task :default => [:checkout, :test]
+task :default => [:test]
# ==========================================================
# Ruby Extension
# ==========================================================
Rake::ExtensionTask.new('redcarpet')
-task :checkout do |t|
- unless File.exists?('sundown/src/markdown.h')
- sh 'git submodule init'
- sh 'git submodule update'
- end
-end
-
# ==========================================================
# Testing
# ==========================================================
@@ -116,3 +109,23 @@ task :update_gem do
puts "updated #{GEMFILE}"
end
+desc 'Gather required Sundown sources into extension directory'
+task :gather => 'sundown:checkout' do |t|
+ files =
+ FileList[
+ 'sundown/src/{markdown,buffer,stack,autolink,html_blocks}.h',
+ 'sundown/src/{markdown,buffer,stack,autolink}.c',
+ 'sundown/html/{html,html_smartypants,houdini_html_e,houdini_href_e}.c',
+ 'sundown/html/{html,houdini}.h',
+ ]
+ cp files, 'ext/redcarpet/',
+ :preserve => true,
+ :verbose => true
+end
+
+task 'sundown:checkout' do |t|
+ unless File.exists?('sundown/src/markdown.h')
+ sh 'git submodule init'
+ sh 'git submodule update'
+ end
+end
@@ -0,0 +1,296 @@
+/*
+ * Copyright (c) 2011, Vicent Marti
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "buffer.h"
+#include "autolink.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#if defined(_WIN32)
+#define strncasecmp _strnicmp
+#endif
+
+int
+sd_autolink_issafe(const uint8_t *link, size_t link_len)
+{
+ static const size_t valid_uris_count = 5;
+ static const char *valid_uris[] = {
+ "/", "http://", "https://", "ftp://", "mailto:"
+ };
+
+ size_t i;
+
+ for (i = 0; i < valid_uris_count; ++i) {
+ size_t len = strlen(valid_uris[i]);
+
+ if (link_len > len &&
+ strncasecmp((char *)link, valid_uris[i], len) == 0 &&
+ isalnum(link[len]))
+ return 1;
+ }
+
+ return 0;
+}
+
+static size_t
+autolink_delim(uint8_t *data, size_t link_end, size_t max_rewind, size_t size)
+{
+ uint8_t cclose, copen = 0;
+ size_t i;
+
+ for (i = 0; i < link_end; ++i)
+ if (data[i] == '<') {
+ link_end = i;
+ break;
+ }
+
+ while (link_end > 0) {
+ if (strchr("?!.,", data[link_end - 1]) != NULL)
+ link_end--;
+
+ else if (data[link_end - 1] == ';') {
+ size_t new_end = link_end - 2;
+
+ while (new_end > 0 && isalpha(data[new_end]))
+ new_end--;
+
+ if (new_end < link_end - 2 && data[new_end] == '&')
+ link_end = new_end;
+ else
+ link_end--;
+ }
+ else break;
+ }
+
+ if (link_end == 0)
+ return 0;
+
+ cclose = data[link_end - 1];
+
+ switch (cclose) {
+ case '"': copen = '"'; break;
+ case '\'': copen = '\''; break;
+ case ')': copen = '('; break;
+ case ']': copen = '['; break;
+ case '}': copen = '{'; break;
+ }
+
+ if (copen != 0) {
+ size_t closing = 0;
+ size_t opening = 0;
+ size_t i = 0;
+
+ /* Try to close the final punctuation sign in this same line;
+ * if we managed to close it outside of the URL, that means that it's
+ * not part of the URL. If it closes inside the URL, that means it
+ * is part of the URL.
+ *
+ * Examples:
+ *
+ * foo http://www.pokemon.com/Pikachu_(Electric) bar
+ * => http://www.pokemon.com/Pikachu_(Electric)
+ *
+ * foo (http://www.pokemon.com/Pikachu_(Electric)) bar
+ * => http://www.pokemon.com/Pikachu_(Electric)
+ *
+ * foo http://www.pokemon.com/Pikachu_(Electric)) bar
+ * => http://www.pokemon.com/Pikachu_(Electric))
+ *
+ * (foo http://www.pokemon.com/Pikachu_(Electric)) bar
+ * => foo http://www.pokemon.com/Pikachu_(Electric)
+ */
+
+ while (i < link_end) {
+ if (data[i] == copen)
+ opening++;
+ else if (data[i] == cclose)
+ closing++;
+
+ i++;
+ }
+
+ if (closing != opening)
+ link_end--;
+ }
+
+ return link_end;
+}
+
+static size_t
+check_domain(uint8_t *data, size_t size, int allow_short)
+{
+ size_t i, np = 0;
+
+ if (!isalnum(data[0]))
+ return 0;
+
+ for (i = 1; i < size - 1; ++i) {
+ if (data[i] == '.') np++;
+ else if (!isalnum(data[i]) && data[i] != '-') break;
+ }
+
+ if (allow_short) {
+ /* We don't need a valid domain in the strict sense (with
+ * least one dot; so just make sure it's composed of valid
+ * domain characters and return the length of the the valid
+ * sequence. */
+ return i;
+ } else {
+ /* a valid domain needs to have at least a dot.
+ * that's as far as we get */
+ return np ? i : 0;
+ }
+}
+
+size_t
+sd_autolink__www(
+ size_t *rewind_p,
+ struct buf *link,
+ uint8_t *data,
+ size_t max_rewind,
+ size_t size,
+ unsigned int flags)
+{
+ size_t link_end;
+
+ if (max_rewind > 0 && !ispunct(data[-1]) && !isspace(data[-1]))
+ return 0;
+
+ if (size < 4 || memcmp(data, "www.", strlen("www.")) != 0)
+ return 0;
+
+ link_end = check_domain(data, size, 0);
+
+ if (link_end == 0)
+ return 0;
+
+ while (link_end < size && !isspace(data[link_end]))
+ link_end++;
+
+ link_end = autolink_delim(data, link_end, max_rewind, size);
+
+ if (link_end == 0)
+ return 0;
+
+ bufput(link, data, link_end);
+ *rewind_p = 0;
+
+ return (int)link_end;
+}
+
+size_t
+sd_autolink__email(
+ size_t *rewind_p,
+ struct buf *link,
+ uint8_t *data,
+ size_t max_rewind,
+ size_t size,
+ unsigned int flags)
+{
+ size_t link_end, rewind;
+ int nb = 0, np = 0;
+
+ for (rewind = 0; rewind < max_rewind; ++rewind) {
+ uint8_t c = data[-rewind - 1];
+
+ if (isalnum(c))
+ continue;
+
+ if (strchr(".+-_", c) != NULL)
+ continue;
+
+ break;
+ }
+
+ if (rewind == 0)
+ return 0;
+
+ for (link_end = 0; link_end < size; ++link_end) {
+ uint8_t c = data[link_end];
+
+ if (isalnum(c))
+ continue;
+
+ if (c == '@')
+ nb++;
+ else if (c == '.' && link_end < size - 1)
+ np++;
+ else if (c != '-' && c != '_')
+ break;
+ }
+
+ if (link_end < 2 || nb != 1 || np == 0)
+ return 0;
+
+ link_end = autolink_delim(data, link_end, max_rewind, size);
+
+ if (link_end == 0)
+ return 0;
+
+ bufput(link, data - rewind, link_end + rewind);
+ *rewind_p = rewind;
+
+ return link_end;
+}
+
+size_t
+sd_autolink__url(
+ size_t *rewind_p,
+ struct buf *link,
+ uint8_t *data,
+ size_t max_rewind,
+ size_t size,
+ unsigned int flags)
+{
+ size_t link_end, rewind = 0, domain_len;
+
+ if (size < 4 || data[1] != '/' || data[2] != '/')
+ return 0;
+
+ while (rewind < max_rewind && isalpha(data[-rewind - 1]))
+ rewind++;
+
+ if (!sd_autolink_issafe(data - rewind, size + rewind))
+ return 0;
+
+ link_end = strlen("://");
+
+ domain_len = check_domain(
+ data + link_end,
+ size - link_end,
+ flags & SD_AUTOLINK_SHORT_DOMAINS);
+
+ if (domain_len == 0)
+ return 0;
+
+ link_end += domain_len;
+ while (link_end < size && !isspace(data[link_end]))
+ link_end++;
+
+ link_end = autolink_delim(data, link_end, max_rewind, size);
+
+ if (link_end == 0)
+ return 0;
+
+ bufput(link, data - rewind, link_end + rewind);
+ *rewind_p = rewind;
+
+ return link_end;
+}
+
Oops, something went wrong.

0 comments on commit 27616ac

Please sign in to comment.