Adds support for Continous Integration

.gitignore

@@ -1 +1 @@
-/_site
+/_site

.travis.yml

@@ -0,0 +1,14 @@
+language: ruby
+rvm:
+  - 2.1
+python:
+  - 2.7
+install:
+  - sudo pip install html5validator
+  - bundle install
+script:
+  - bundle exec jekyll build
+  - ./script/cibuild
+env:
+  global:
+    - NOKOGIRI_USE_SYSTEM_LIBRARIES=true # speeds up installation of html-proofer

Gemfile

@@ -1,4 +1,3 @@
 source 'https://rubygems.org'
-
 gem 'github-pages'
-gem 'jekyll-redirect-from'
+gem 'html-proofer'

Gemfile.lock

@@ -8,6 +8,7 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
+    addressable (2.3.7)
     blankslate (2.1.2.4)
     celluloid (0.16.0)
       timers (~> 4.0.0)
@@ -16,8 +17,11 @@ GEM
     coffee-script (2.3.0)
       coffee-script-source
       execjs
-    coffee-script-source (1.9.0)
+    coffee-script-source (1.9.1)
     colorator (0.1)
+    colored (1.2)
+    ethon (0.7.3)
+      ffi (>= 1.3.0)
     execjs (2.3.0)
     fast-stemmer (1.0.2)
     ffi (1.9.6)
@@ -47,6 +51,14 @@ GEM
     html-pipeline (1.9.0)
       activesupport (>= 2)
       nokogiri (~> 1.4)
+    html-proofer (2.1.0)
+      addressable (~> 2.3)
+      colored (~> 1.2)
+      mercenary (~> 0.3.2)
+      nokogiri (~> 1.5)
+      parallel (~> 1.3)
+      typhoeus (~> 0.7)
+      yell (~> 2.0)
     i18n (0.7.0)
     jekyll (2.4.0)
       classifier-reborn (~> 2.0)
@@ -95,9 +107,10 @@ GEM
     net-dns (0.8.0)
     nokogiri (1.6.6.2)
       mini_portile (~> 0.6.0)
+    parallel (1.4.0)
     parslet (1.5.0)
       blankslate (~> 2.0)
-    posix-spawn (0.3.9)
+    posix-spawn (0.3.10)
     public_suffix (1.4.6)
     pygments.rb (0.6.1)
       posix-spawn (~> 0.3.6)
@@ -108,20 +121,23 @@ GEM
     rdiscount (2.1.7)
     redcarpet (3.1.2)
     safe_yaml (1.0.4)
-    sass (3.4.11)
+    sass (3.4.13)
     terminal-table (1.4.5)
     thread_safe (0.3.4)
     timers (4.0.1)
       hitimes
     toml (0.1.2)
       parslet (~> 1.5.0)
+    typhoeus (0.7.1)
+      ethon (>= 0.7.1)
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
     yajl-ruby (1.2.1)
+    yell (2.0.5)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   github-pages
-  jekyll-redirect-from
+  html-proofer

_config.yml

@@ -4,4 +4,5 @@ permalink: /blog/:year/:month/:day/:title/
 redcarpet:
   extensions: ['with_toc_data', 'tables']
 gems:
-  - jekyll-redirect-from
+  - jekyll-redirect-from
+exclude: [vendor]

script/cibuild

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+cd "$DIR"
+echo "------------------------------------------------------------------------"
+echo "* Task #1: html5validator"
+./filter-html5validator
+echo
+echo "------------------------------------------------------------------------"
+echo "* Task #2: htmlproof"
+./filter-htmlproof
+echo
+echo "------------------------------------------------------------------------"

script/filter-html5validator

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+cd "$DIR"
+source "$DIR/filter-lib.sh"
+
+filter_errors() {
+  grep -v "Bad value “X-UA-Compatible” for attribute “http-equiv” on element “meta”" #|
+  #grep " error: "
+}
+
+filter_html5validator() {
+  filter_it "$DIR/../_site/" "html5validator --blacklist docs"
+}
+
+filter_html5validator

script/filter-htmlproof

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+
+DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+cd "$DIR"
+source "$DIR/filter-lib.sh"
+
+filter_errors() {
+  grep -v "linking to /docs/stable/elixir/Kernel.html#%7C%3E/2, but %7C%3E/2 does not exist" |
+  grep -vP "internally linking to \/docs\/.*, which does not exist" |
+  grep -vP "trying to find hash of \/docs\/.*, but .* does not exist" |
+
+  filter_more_errors |
+
+  #delete every file hat has no error (that is, anything file that is not follow by a line starting with "  *  ")
+  perl -0777 -pe 's/\- .*\n(?!\s+\*\s+)//g'
+}
+
+filter_more_errors() {
+  perl -CSAD -ne '
+    BEGIN {
+      my $current_file = "";
+    }
+    if ( /^- / ) {
+      $current_file = $_;
+    } elsif ( $current_file =~ /getting_started/ ) {
+      s/\s+\*\s+no favicon specified\n//;
+    }
+    print
+  ' $1
+}
+
+filter_success() {
+  perl -CSAD -pe "s/\|\s+Error:\s+HTML-Proofer found \d+ failures?\!//g" |
+  perl -0777 -CSAD -pe "s/\n{3,}/\n\n/g"
+}
+
+filter_htmlproof() {
+  filter_it "$DIR/../" "bundle exec htmlproof ./_site --file-ignore /docs/ --only-4xx --check-favicon --check-html --check-external-hash"
+}
+
+filter_htmlproof

script/filter-lib.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+TEMP_DIR=$(mktemp -dt "$(basename $0).XXXXXXXXXX")
+
+STDOUT="$TEMP_DIR/htmlproof_stdout"
+STDERR="$TEMP_DIR/htmlproof_stderr"
+STDERR_PRE="$TEMP_DIR/htmlproof_stderr_pre"
+
+clean_temp_files() {
+  rm -rf "$TEMP_DIR" 2> /dev/null
+}
+
+function validate() {
+  local cmd="$1"
+  echo "$cmd" &&
+  $cmd 1>"$STDOUT" 2>"$STDERR_PRE"
+  cat "$STDERR_PRE" | filter_errors >"$STDERR"
+}
+
+filter_success() {
+  perl -0777 -CSAD -pe "s/\n{3,}/\n\n/g"
+}
+
+# filter_it <full_path_dir> <command>
+filter_it() {
+  local dir=$(readlink -f "$1")
+  pushd "$dir" 1> /dev/null
+  pwd
+  validate "$2"
+  errors=$(<"$STDERR")
+  length=${#errors}
+  if [ "$length" -gt 0 ]; then
+    echo "ERROR: Documents are not valid" >&2
+    echo
+    cat "$STDERR" >&2
+    clean_temp_files
+    popd 1> /dev/null
+    return 1
+  else
+    cat "$STDOUT" | filter_success
+    echo
+    echo "OK: Documents successfully validated"
+    cat "$STDERR" >&2
+    clean_temp_files
+    popd 1> /dev/null
+    return 0
+  fi
+}