From a8bddf3df1c82ff3267b2b4b742930aee85e0012 Mon Sep 17 00:00:00 2001
From: KrumpetPirate <travis.neeley@gmail.com>
Date: Thu, 5 Jan 2017 18:29:37 -0600
Subject: [PATCH] Added .authcode support and fixed README

---
 .gitignore  |  1 +
 AAXtoMP3.sh | 47 +++++++++++++++++++++++++++++++++--------------
 README.md   | 22 ++++++++++++----------
 3 files changed, 46 insertions(+), 24 deletions(-)

diff --git a/.gitignore b/.gitignore
index f481853..71a9d6a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 ACTIVATION
+.authcode
diff --git a/AAXtoMP3.sh b/AAXtoMP3.sh
index 351f628..a81aabf 100755
--- a/AAXtoMP3.sh
+++ b/AAXtoMP3.sh
@@ -4,6 +4,12 @@ set -o errexit -o noclobber -o nounset -o pipefail
 
 codec=libmp3lame
 extension=mp3
+mode=chaptered
+
+if [ "$#" -eq 0 ]; then
+        echo "Usage: bash AAXtoMP3.sh [--flac] [--single] AUTHCODE {FILES}"
+        exit 1
+fi
 
 if [[ "$1" = '--flac' ]]
 then
@@ -12,8 +18,18 @@ then
     shift
 fi
 
-auth_code=$1
-shift
+if [[ "$1" == '--single' ]]
+then
+    mode=single
+    shift
+fi
+
+if [ ! -f .authcode ]; then
+    auth_code=$1
+    shift
+else
+    auth_code=`head -1 .authcode`
+fi
 
 debug() {
     echo "$(date "+%F %T%z") ${1}"
@@ -56,19 +72,22 @@ do
 
     debug "Created ${full_file_path}."
 
-    debug "Extracting chapter files from ${full_file_path}..."
+    if [ "${mode}" == "chaptered" ]; then
+        debug "Extracting chapter files from ${full_file_path}..."
 
-    while read -r -u9 first _ _ start _ end
-    do
-        if [[ "${first}" = "Chapter" ]]
-        then
-            read -r -u9 _
-            read -r -u9 _ _ chapter
-            chapter_file="${output_directory}/${title} - ${chapter}.${extension}"
-            ffmpeg -loglevel error -stats -i "${full_file_path}" -ss "${start%?}" -to "${end}" -codec:a copy "${chapter_file}"
-        fi
-    done 9< "$metadata_file"
-    debug "Done creating chapters. Single file and chaptered files contained in ${output_directory}."
+        while read -r -u9 first _ _ start _ end
+        do
+            if [[ "${first}" = "Chapter" ]]
+            then
+                read -r -u9 _
+                read -r -u9 _ _ chapter
+                chapter_file="${output_directory}/${title} - ${chapter}.${extension}"
+                ffmpeg -loglevel error -stats -i "${full_file_path}" -ss "${start%?}" -to "${end}" -codec:a copy "${chapter_file}"
+            fi
+        done 9< "$metadata_file"
+        rm ${full_file_path}
+        debug "Done creating chapters. Chaptered files contained in ${output_directory}."
+    fi
 
     cover_path="${output_directory}/cover.jpg"
     debug "Extracting cover into ${cover_path}..."
diff --git a/README.md b/README.md
index 0073b16..122848b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # AAXtoMP3
 The purpose of this software is to convert AAX files to a more common MP3 format
-through a basic perl script frontend to FFMPEG.
+through a basic bash script frontend to FFMPEG.
 
 Audible uses this file format to maintain DRM restrictions on their audio
 books and if you download your book through your library it will be
@@ -12,10 +12,6 @@ your **personal** Audible account. The purpose of this software is to
 create a method for you to download and store your books just in case
 Audible fails for some reason.
 
-I recently converted this script to bash instead of perl. Something about more people knowing bash or something rather.
-Additionally I put some work into creating chaptered files as well as the mp3 version. A directory of structure GENRE/WRITER/TITLE
-will contain the large mp3 as well as chaptered mp3s extracted from the AAX file metadata.
-
 TODO: Automatically fix the MP3 tags on the generated audio files. For now I use easytag which seems to work okay.
 
 ## Setup
@@ -25,7 +21,6 @@ can obtain this string from a tool like [audible-activator](https://github.com/i
 
 ## Requirements
 * bash 4.3.42 or later tested
-* ~~perl version 5.22.0 or later~~ (Converted the script to bash for greater readability!)
 * ffmpeg version 2.8.3 or later
 * libmp3lame (came from lame package on Arch, not sure where else this is stored)
 
@@ -36,12 +31,19 @@ bash AAXtoMP3.sh <AUTHCODE> {INPUT_FILES}
 * AUTHCODE: **your** Audible auth code (it won't correctly decode otherwise) (required)
 * Everything else is considered an input file, useful for batching!
 
-Tested on Linux with the above requirements. No effort will be made to
-port this work to any other operating system, though it may work fine. Want a Windows/
-OSX port? You'll have to fork the work.
+You can also convert the output to FLAC encoding instead of MP3 by doing the following *in order*
+```
+bash AAXtoMP3.sh --flac <AUTHCODE> {INPUT_FILES}
+```
+Additionally, if you have a .authcode file available in the current working directory, it will read the first line of
+that line and treat it like your auth_code. For example here is the full usage with a
+.authcode file available:
+```
+bash AAXtoMP3.sh [--flac] [--single] {FILES}
+```
 
 ## Anti-Piracy Notice
-Note that this project does NOT ‘crack’ the DRM. It simplys allows the user to
+Note that this project does NOT ‘crack’ the DRM. It simply allows the user to
 use their own encryption key (fetched from Audible servers) to decrypt the
 audiobook in the same manner that the official audiobook playing software does.