lastbash-cvs

[Costin S. <cs...@us...>]

Update of /cvsroot/lastbash/lastawk
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv7134

Added Files:
	lastawk 
Log Message:
Added the awk version of the program.


--- NEW FILE: lastawk ---
#!/usr/bin/gawk -f

BEGIN {
	# Enable or disable debugging
	debug = 0

	# Server details
	lastfm["host"] = "ws.audioscrobbler.com"
	lastfm["port"] = "80"
	lastfm["version"] = "0.1"
	lastfm["platform"] = "linux"

	# The playlist
	playlist="playlist.m3u"

	# Login first
	lastfm_connect("cstroie", "00000000000000000000000000000000")

	# Parse the command line
	commandline()
}

function commandline()
{
	if (ARGV[1] == "connect")
	{
		print "Connected to server..."
		print " session: " lastfm["session"]
		print " stream : " lastfm["stream_url"]
		# Create the playlist
		printf("#EXTM3U\r\n") > playlist
		printf("#EXTINF:-1,%s\r\n", "Last.fm") > playlist
		printf("%s\r\n", lastfm["stream_url"]) > playlist
		close(playlist)
	}
	else if (ARGV[1] == "skip")
	{
		print "Next track..."
		lastfm_command("skip")
		show_metadata()
	}
	else if (ARGV[1] == "love")
	{
		print "Track love ;) ..."
		lastfm_command("love")
		show_metadata()
	}
	else if (ARGV[1] == "ban")
	{
		print "Track banned, next one please..."
		lastfm_command("ban")
		show_metadata()
	}
	else if (ARGV[1] == "artist")
	{
		if (ARGV[2] != "")
		{
			print "Similar artists to " ARGV[2]
			lastfm_station("lastfm://artist/" ARGV[2] "/similarartists")
			show_metadata()
		}
		else
			print "Specify the artist too."
	}
	else if (ARGV[1] == "tags")
	{
		if (ARGV[2] != "")
		{
			print "Tune to the next tags: " ARGV[2]
			lastfm_station("lastfm://globaltags/" ARGV[2])
			show_metadata()
		}
		else
			print "Specify the tags too."
	}
	else if (ARGV[1] == "help")
	{
		print "Use the next commands:"
		print " connect"
		print " skip"
		print " love"
		print " ban"
		print " info"
		print " artist <artist>"
		print " tags <tags>"
	}
	else
		show_metadata()
}

function show_metadata()
{
	delete metadata
	lastfm_metadata(metadata)
	if (metadata["streaming"] == "true")
	{
		print " Artist : " metadata["artist"]
		print " Title  : " metadata["track"]
		print " Album  : " metadata["album"]
		print " Cover  : " metadata["albumcover_medium"]
		print " Length : " metadata["trackduration"]
		print " Station: " metadata["station"]
	}
	else
		print "Not streaming."
}

function lastfm_connect(username, password,   url, headers, response)
{
	url = "http://" lastfm["host"] ":" lastfm["port"] \
	    "/radio/handshake.php" \
	    "?version=" lastfm["version"] \
	    "&platform=" lastfm["platform"] \
	    "&username=" username \
	    "&passwordmd5=" password

	http_req(url, headers, response)

	if (debug) for(i in headers)
		print "H> " i ": " headers[i]

	for(i in response)
	{
		if (debug) print "R> " i ": " response[i]
		lastfm[i] = response[i]
	}
}

function lastfm_command(cmd,   url, headers, response)
{
	# Commands are: skip, love, ban, rtp, nortp
	url = "http://" lastfm["base_url"] ":" lastfm["port"] \
	    lastfm["base_path"] \
	    "/control.php" \
	    "?session=" lastfm["session"] \
	    "&command=" cmd

	http_req(url, headers, response)

	if (debug) print "R> response: " response["response"]
}

function lastfm_station(station,   url, headers, response)
{
	url = "http://" lastfm["base_url"] ":" lastfm["port"] \
	    lastfm["base_path"] \
	    "/adjust.php" \
	    "?session=" lastfm["session"] \
	    "&url=" station
	    
	http_req(url, headers, response)

	if (debug) print "R> response: " response["response"]
}

function lastfm_metadata(metadata,   url, headers, response)
{
	url = "http://" lastfm["base_url"] ":" lastfm["port"] \
	    lastfm["base_path"] \
	    "/np.php" \
	    "?session=" lastfm["session"]

	http_req(url, headers, response)

	for(i in response)
	{
		if (debug) print "M> " i ": " response[i]
		metadata[i] = response[i]
	}
}


function http_req(url, headers, response,   mch, service, rsp, rsp_mch)
{
	delete headers
	delete response

	match(url, /http:\/\/([^:/]+)(:?([^/]+))(.*)/, mch)
	service = "/inet/tcp/0/" mch[1] "/" mch[3]

	RS = "\n"
	print "GET " mch[4] " HTTP/1.0\r\n" \
	      "Host: " mch[1] "\r\n" \
	      "\r\n" |& service

	while (service |& getline rsp)
	{
		sub(/\r/, "", rsp)
		if (rsp == "") break
		if (match(rsp, /^([^:]+): *(.+)/, rsp_mch))
			headers[rsp_mch[1]] = rsp_mch[2]
	}

	while (service |& getline rsp)
	{
		sub(/\r/, "", rsp)
		if (rsp == "") break
		if (match(rsp, /^([^=]+)=(.+)/, rsp_mch))
			response[rsp_mch[1]] = rsp_mch[2]
	}

	close(service)
}

# vim: set ft=awk nu nowrap: