2010-11-11
Recently, I've been playing around with web.py, a simple yet very powerful web framework for writing web applications using python, and I thought I would share my first test of web.py that goes beyond "hello world". I discussed this briefly on Episode 13 of Frostcast
what it do
In a nutshell, the code will produce a browseable list of directories and audio files.
When run, the code will start a web server on port 8080 that dynamically displays the list of directories and files. Clicking on a link to an audio file will cause the audio file to be played on the server machine using sap. One could easily use any command line audio player of their choice in place of sap; such as mplayer.
Enter the Python
#import some stuff
import web
import subprocess
import os
import urllib
#show the errors as a lot of debug info
web.internalerror = web.debugerror
#what URL do we need to handle?
urls = ("/","list",
"/list/(.*)","list",
"/play/(.*)","play",
"/stop","stop",
)
#what extensions do my audio files have?
good_extensions = (".mp3",".ogg")
#create the app
app = web.application(urls, globals(),True)
#where is the music?
music_dir = "/storage/music/"
class stop:
def GET(self):
#kill sap
subprocess.call("killall sap",shell=True)
#redirect to list
raise web.seeother("/")
class play:
def GET(self,asset):
#kill sap
subprocess.call("killall sap",shell=True)
#launch the sap
f = music_dir+asset
#return f
command = "sap \"%s\"" % (f)
print command
subprocess.Popen(command,shell=True )
#recdirect to list
raise web.seeother("/")
class list:
def GET(self,dir=None):
body=""
dir_list=""
file_list=""
short_path_prefix=""
#determine which directory we should look in
if dir!=None:
short_path_prefix=dir+"/"
parse_dir = music_dir+short_path_prefix
#if this directory exists, we need to show some shit
if os.path.exists(parse_dir):
body+="<b>%s</b> <a href='/stop'>stop</a><br>" % (parse_dir)
#get the dir contents
dirlist = os.listdir( parse_dir )
#I like things in alphabetical order
dirlist.sort()
for asset in dirlist:
asset_full_path = parse_dir+"/"+asset
asset_short_path= short_path_prefix+asset
if os.path.isdir( asset_full_path ):
encoded_path = urllib.pathname2url(asset_short_path);
dir_list+="<a href='/list/%s'>%s</a><br>" % (encoded_path,asset)
else:
#check the extension
(f,e) = os.path.splitext(asset)
#TODO: make this case insensitive
if e in good_extensions:
encoded_path = urllib.pathname2url(asset_short_path);
file_list+="<a href='/play/%s'>%s</a><br>" % (encoded_path,asset)
else:
body+="%s doesn't exist" % (parse_dir)
#add the links to directories and files
body+=dir_list
body+=file_list
return "<html><title>Music Browser</title><body>%s</body></html>" % body
if __name__ == "__main__":
app.run()
import web
import subprocess
import os
import urllib
#show the errors as a lot of debug info
web.internalerror = web.debugerror
#what URL do we need to handle?
urls = ("/","list",
"/list/(.*)","list",
"/play/(.*)","play",
"/stop","stop",
)
#what extensions do my audio files have?
good_extensions = (".mp3",".ogg")
#create the app
app = web.application(urls, globals(),True)
#where is the music?
music_dir = "/storage/music/"
class stop:
def GET(self):
#kill sap
subprocess.call("killall sap",shell=True)
#redirect to list
raise web.seeother("/")
class play:
def GET(self,asset):
#kill sap
subprocess.call("killall sap",shell=True)
#launch the sap
f = music_dir+asset
#return f
command = "sap \"%s\"" % (f)
print command
subprocess.Popen(command,shell=True )
#recdirect to list
raise web.seeother("/")
class list:
def GET(self,dir=None):
body=""
dir_list=""
file_list=""
short_path_prefix=""
#determine which directory we should look in
if dir!=None:
short_path_prefix=dir+"/"
parse_dir = music_dir+short_path_prefix
#if this directory exists, we need to show some shit
if os.path.exists(parse_dir):
body+="<b>%s</b> <a href='/stop'>stop</a><br>" % (parse_dir)
#get the dir contents
dirlist = os.listdir( parse_dir )
#I like things in alphabetical order
dirlist.sort()
for asset in dirlist:
asset_full_path = parse_dir+"/"+asset
asset_short_path= short_path_prefix+asset
if os.path.isdir( asset_full_path ):
encoded_path = urllib.pathname2url(asset_short_path);
dir_list+="<a href='/list/%s'>%s</a><br>" % (encoded_path,asset)
else:
#check the extension
(f,e) = os.path.splitext(asset)
#TODO: make this case insensitive
if e in good_extensions:
encoded_path = urllib.pathname2url(asset_short_path);
file_list+="<a href='/play/%s'>%s</a><br>" % (encoded_path,asset)
else:
body+="%s doesn't exist" % (parse_dir)
#add the links to directories and files
body+=dir_list
body+=file_list
return "<html><title>Music Browser</title><body>%s</body></html>" % body
if __name__ == "__main__":
app.run()
Give it a go
- save the code http://www.jezra.net/downloads/blogcode/audio_browser.tgz
- edit line 19 to point to a directory of audio files
- run the code with python
- point your browser to http://localhost:8080
- email me to let me know what went wrong
- ?
- Did you remember to install web.py?
Moving Forward
Welcome to "Shot of Code", this is only the start of the code. So where can this go? AKA, what would I like this to do. Well I can think of a few things.
- a web interface for playing videos on my media machine. This will require some some way to send commands to Mplayer for play, pause, fast-forward, etc.
- a web front end to a command line audcatcher (sorry, I couldn't resist).
- recreate shnerkel with a web interface.
The reason that all of my code ideas are audio or video related is because I want to be able to control my media machine with a web interface and not have to SSH into the machine to control media playback.
Now quit reading, and go sweeten that sauce!
jezra
- Tags:
Tags:
2019
2016
September
June
May
April
March
2015
September
August
May
April
March
February
January
2014
December
- Tubular Music Thingy Part 2
- Beaglebone console output and a faster boot
- Tubular Music Thingy (part 1)
- get and speak the weather
- Getreel youtube-dl wrapper
November
August
July
June
May
April
February
January
2013
December
November
October
September
August
July
June
May
April
March
February
January
2012
December
November
October
September
August
July
- Two hours with the Archos 43
- HTML5 for a specific platform? I prefer to develop native apps
- a bit of dev talk about MuttonChop media player
May
- case for my status server
- my tiny todo list and some ruby
- The Camp Mug (almost) Test
- 2012 Tizen Developers Conference in San Francisco
- Freedom Jar is Full
- Web UI speed up using HTML5 Server Sent Events
- LEDs, BeagleBone, and my ToDo List
- a case for the BeagleBone
April
March
- fixing the car mirror
- Basic HTTP server in Vala using GIO Sockets
- sewing up a bling thing
- Trip to Austin
- convert hexadecimal string to an integer with Vala
February
January
2011
December
November
October
- Training for 2012: Wuggling
- ABC tune grabber/converter
- A trip to Lancaster
- a new media playing machine
September
- Don't turn Tizen into WebOS
- making some chili sauce
- grumpy kid
- beer network improvement
- Ripping my DVD collection
August
July
- ruby script to search files in a directory for a string
- Pacific Pinball Museum Mission
- A Tale of Two Mugs
- shishi odoshi prototype
June
May
April
March
- file downloader in Node.js that handles redirects
- Travelling Far Part II
- python shell-fm web interface
- not quite a letter to cherrypal
- Audio playing class in Ruby with Gstreamer
- A quick fix
February
- my resized images using Ruby and Imagemagick
- one pound of coffee
- noise-canceling headphones that actually work
- updating my dynamic IP DNS information with Ruby
- Hello World in Ruby
January
2010
December
November
- Bacon Apple Cider
- clawhammer sudo modprobe
- a web.py introduction
- The Skillet
- banjer strap on the cheap
October
- The Letter to Dell
- Linux Outlaws episode 170
- Not the 2010 Petaluma Whiskerino
- Monte Rio
- a new power switch
September
August
July
- the coffee cup review
- seriously, that thing is garbage
- keeping a GTK TextView cursor in view
- A tale of three sticker
June
- minimize/close to system tray in Python GTK
- A markdown editor/viewer in Python
- Red Phone Mumble Test
- Saturday Sassafrass
- A Friday Frolic
- Toshiba laptop review
May
- Google no longer uses Microsoft
- regarding Heybuddy and python stuff
- I'm calling you!
- heybuddy identi.ca client
- making a change holder thing
- Did I win? Yes and No.
- photograph sticker
April
- share this on facebook
- the damn computer died
- kilt alteration
- audcast streamer in vala with gstreamer, gtk and webkit
March
- The Mullet Adventure
- A Letter to the California State Legislature
- will dogfooding the frenzy leave me bitter?
- basic sitemap file maker in Python
- rock and rolling down the street
February
January
2009
December
- Time to Celebrate
- game of life : Vala, SDL
- game of life : python, clutter
- networked timed text-to-speech goodness
- battery status in a screen session
- Bright Bike
- turning gears
November
- incremental screenshot namer wrapper
- a nice little feature/bug
- drawing circles
- broken VHS fixed
- cloudy phone number finder
October
- network quitter fixer
- the hot sauce experiment
- non-delivered emails sent to AOL domains
- GIMP mathmap experiment results
- tri-force tuna gift
September
- leave early, take your time, enjoy the solitude
- N37°49'8 W122°28'48
- rotary phone computer interface in action
- python script to play the latest version of an audio broadcast
August
- rotary phone computer input device
- server log spam from Microsoft?
- creating a CAPTCHA
- hello HTML 5! a simple audio player
July
- How does that increase security?
- getting familiar with GWT, a porting experiment.
- You're Not Carnival Personnel!
- "disable" a web app's buttons using javascript and css
- litterbugs and jaywalkers
June
- a basic web-app with pyjamas
- shell script to aid in compiling Vala projects
- Banjo part 4: she's finished
- Accent Characters in Linux with Xorg
- Terminal emulator part deux!
May
- Community
- Terminal Emulator in Vala using GTK and VTE
- Where is the MPAA on this one?
- pyclutter stage fullscreen hack
- Banjo part 3
April
March
- from necessity comes something
- If you build it, they will spam
- writing blogging software ( using data from blogspot )
February
January
2008
December
- From WBEZ Chicago......
- Simple Switch Input to Enter a Command
- perplexing ponderence, pertaining penguin presents
November
- baby steps: the evolution my feature-free PHP framework
- ruining a perfectly good lamp?
- thank you bazaar
- quick not-so-little bikey bag
- Vala musings : int to string, packages, and starting with main
October
September
- my motor vehicle warranty is about to expire? really?
- Bike Trailer Part 2
- getting dandy with a hair pretty
- a not so elegant fixer up
August
June
May
- use python and gstreamer to get the tags of an audio file
- trials with gstreamer, pygst, and goom visualization
- Gaarrrrrrrrr!
- more pyclutter: get a move on - behaviourpath
- scrollwheel css div Internet Explorer 7 problem fixed
- Hello World using pyclutter - a half assed tutorial
April
I played a bit with mplayer control from bash scripts a few weeks ago and a combination of mplayer's 'slave=yes' and 'input=file=/path/to/fifo' options makes it pretty easy to control mplayer by sending commands like 'echo "play" > /path/to/fifo'