w_scan_start.sh

dvb在linux下搜索电台的源代码

#!/bin/sh
#######################################################
# w_scan start script
# 20060812 wirbel (handygewinnspiel AET gmx D*T de)
#
# - 20060812: first version
# - 20060822: many improvements
# cu@vdr-portal
#
#######################################################

umask 022
export PATH="$(pwd):/bin:/usr/bin:/sbin:/usr/sbin"
DATE="$(date +%Y)$(date +%m)$(date +%d)" # $DATE == "YYYYMMDD", i.e. 20060710
W_SCAN=$(which w_scan 2>/dev/null)
UDEVSTART=$(which udevstart)
SCRIPT_VERSION="20080105"
W_SCAN_VERSION=$($W_SCAN -V 2>&1)


# Width of the Screen
COLUMNS=$(stty size)
COLUMNS=${COLUMNS##* }
if [ "$COLUMNS" = "0" ]; then
	COLUMNS=80;
fi

# Measurements for positioning result messages
COL=$(($COLUMNS - 12))
WCOL=$(($COLUMNS - 30))

# Set Cursur Position Commands, used via echo -e
SET_COL="\\033[${COL}G"
SET_WCOL="\\033[${WCOL}G"
CURS_UP="\\033[A"

# Set color commands, used via echo -e
NORMAL="\\033[40;39m"
SUCCESS="\\033[40;32m"
WARNING="\\033[40;33m"
FAILURE="\\033[40;31m"

echo_ok()
{
	echo -e "$CURS_UP$SET_COL"["$SUCCESS""    OK    ""$NORMAL"]
}

echo_failure()
{
	echo -e "$CURS_UP$SET_COL"["$FAILURE""  FAILED  ""$NORMAL"]
}

echo_warning()
{
	echo -e "$CURS_UP$SET_WCOL$@$SET_COL"["$WARNING""   WARN   ""$NORMAL"]
}

echo_yes()
{
	echo -e "$CURS_UP$SET_COL"["$SUCCESS""    YES   ""$NORMAL"]
}

echo_no()
{
	echo -e "$CURS_UP$SET_COL"["$SUCCESS""    NO    ""$NORMAL"]
}

echo_loaded()
{
	echo -e "$CURS_UP$SET_COL"["$SUCCESS""  LOADED  ""$NORMAL"]
}

echo_not_loaded()
{
	echo -e "$CURS_UP$SET_COL"["$FAILURE""NOT LOADED""$NORMAL"]
}

print_error_msg()
{
	echo -e -n $FAILURE
	echo "****************************************************************"
	echo "* FAILURE. Something doesn't work here,                        *"
	echo "* last command gives me an error.. :-(                         *"
	echo "*                                                              *"
	echo "* Press Enter to continue..                                    *"
	echo "****************************************************************"
	echo -e -n $NORMAL && tput sgr0
	read ENTER
	echo -e -n $NORMAL
}

CheckBinary()
{
	if [ -d $1 ];	then
		echo -e -n $FAILURE
		echo "Checking binary $1.."
		echo "$1 is a directory, not a binary. Cannot continue - EXITING."
		echo -e -n $NORMAL
		tput sgr0 && clear && exit -1
	fi
	if [ ! -f $1 ];	then
		echo -e -n $FAILURE
		echo "Checking binary $1.."
		echo "$1 is not a valid file or not found. Cannot continue - EXITING."
		echo -e -n $NORMAL
		tput sgr0 && clear && exit -1
	fi
	if [ ! -s $1 ];	then
		echo -e -n $FAILURE
		echo "Checking binary $1 (file size).."
		echo "$1 is not a valid file (zero size!!). Cannot continue - EXITING."
		echo -e -n $NORMAL
		tput sgr0 && clear && exit -1
	fi
	if [ ! -x $1 ]; then
		echo -e -n $FAILURE
		echo "Checking permissions of binary $1 .."
		echo "$1 is not executable. Check permissions! Cannot continue - EXITING."
		echo -e -n $NORMAL
		tput sgr0 && clear && exit -1
	fi
}

CheckVersions()
{
	if [ "$W_SCAN_VERSION" != "$SCRIPT_VERSION" ]; then
		echo -e -n $FAILURE
		echo "Using $W_SCAN"
		echo "w_scan is version $W_SCAN_VERSION."
		echo "This start script is version $SCRIPT_VERSION."
		echo "Both of them _must_ have the same version."
		echo "Cannot continue - EXITING."
		echo -e -n $NORMAL
		tput sgr0 && clear && exit -1
	fi
}

eval_retval()
{
	errval=$?
	if [ $errval = 0 ]; then
		print_status success
	else
		print_status failure
	fi
	return 0
}

print_status()
{
        if [ $# = 0 ]; then
                echo "Usage: $0 {success|warning|failure}"
                return 1
        fi
        case "$1" in
                success)
                        echo_ok
                ;;
                warning)
                        case "$2" in
                                running)
                                        echo_warning "Already running"
                                ;;
                                not_running)
                                        echo_warning "Not running"
                                ;;
                                not_available)
                                        echo_warning "Not available"
                                ;;
                        esac
                ;;
                failure)
                        echo_failure
                ;;
        esac
}

function Greeting ()
{
	clear
	echo -e -n $SUCCESS
	echo "=============================================================================="
	echo -e "THIS IS THE ""\\033[44m"" W_SCAN START SCRIPT ""\\033[40m$SUCCESS"" (see http://free.pages.at/wirbel4vdr)"
	echo ""
	echo "It will try the following:"
	echo ""
	echo "   step 1) checks wether vdr is running and if so, try to stop it"
	echo "   step 2) check wether your dvb driver is loaded and if not, load it"
	echo "   step 3) do a channel scan and create a vdr channels.conf"
	echo "   step 4) ask you, wether your vdr should be restarted"
	echo ""
	echo "PRESS ANY KEY TO CONTINUE OR CTRL+C TO EXIT"
	echo "=============================================================================="
	echo -e -n $NORMAL && tput sgr0
	read
	echo -e -n $NORMAL
}



function StopVDR ()
{
  echo "Checking wether Video Disk Recorder software is stopped..."
  if [ "$(ps -A | grep vdr)" != "" ]; then
	echo_no
	echo -e -n $FAILURE
	echo "****************************************************************"
	echo "*                                                              *"
	echo "* W_SCAN CANNOT CONTINUE WHILE VDR IS RUNNING.                 *"
	echo "* Should I try to stop vdr for you? [y/n]                      *"
	echo "*                                                              *"
	echo "****************************************************************"
	echo -e -n $NORMAL && tput sgr0
	read RESPONSE
	echo -e -n $NORMAL
	if [ "$RESPONSE" != "y" ]; then
		echo "OKAY. Exiting w_scan start script."
		sleep 2
		tput sgr0 && clear && exit -1
        else
		clear
		stopped=false
		echo "Trying to stop vdr..."
		echo "Checking for ct-vdr style startscript.."
		if [ -e /etc/init.d/vdr ]; then			# c't-vdr
			echo_yes
			$(/etc/init.d/vdr stop)
			stopped=true
		else
			echo_no
		fi
		if [ $stopped == false ]; then
			echo "Checking for linvdr style startscript.."
			if [ -e /etc/init.d/runvdr ]; then		# linvdr
				echo_yes
				$(/etc/init.d/runvdr stop)
				$(/etc/init.d/runvdr loaddriver)
			else
				echo_no
			fi
		fi
		if [ $stopped == false ]; then
			echo "Checking for runvdr in /usr/local/bin.."
			if [ -e /usr/local/bin/runvdr ]; then		# -|-
				echo_yes
				echo "   Checking wether /usr/local/bin/runvdr knows 'stop'..."
				VAR="$(cat /usr/local/bin/runvdr | grep 'stop)')"
				if [ "$VAR" != "" ]; then
					echo_yes
					$(/usr/local/bin/runvdr stop)
				else
					echo_no
				fi
			else
				echo_no
			fi
		fi
		if [ $stopped == false ]; then
			echo "Checking for runvdr in /usr/bin.."
			if [ -e /usr/bin/runvdr ]; then			# -|-
				echo_yes
				echo "   Checking wether this /usr/bin/runvdr knows 'stop'..."
				VAR="$(cat /usr/bin/vdr | grep 'stop)')"
				if [ "$VAR" != "" ]; then
					echo_yes
					$(/usr/bin/runvdr stop)
				else
					echo_no
				fi
			else
				echo_no
			fi
		fi
		if [ $stopped == false ]; then
			if [ "$(ps -A | grep vdr)" != "" ]; then 	# last Chance, but unusual system anyway..
				echo "No stop script found - using killall.."
				KILLALL=$(which killall)
				$($KILLALL -9 vdr 2>&1 > /dev/null)
				$($KILLALL -9 runvdr 2>&1 > /dev/null)
				sleep 6
				if [ "$(ps -A | grep vdr)" != "" ]; then 	# we should re-check here
			    		echo_failure
			    		echo "VDR is running and cannot be stopped - giving up."
			    		tput sgr0 && clear && exit -1
					else
			    		echo_ok
				fi			
			fi
		fi
	fi
  else
  	echo_ok
  fi
}


function StartVDR ()
{
    echo -e -n $SUCCESS
    echo "****************************************************************"
    echo "*                                                              *"
    echo "* All is done now.                                             *"
    echo "* Should I try to restart vdr for you? [y/n]                   *"
    echo "*                                                              *"
    echo "****************************************************************"
    echo -e -n $NORMAL && tput sgr0
    read RESPONSE
    echo -e -n $NORMAL
	if [ "$RESPONSE" != "y" ]; then
		echo -n -e "\\033[1;34m"
		echo ""
		echo "Okay, restarting vdr skipped."
		echo "GOODBYE! Exiting now."
		echo ""
		echo -e -n $NORMAL
		tput sgr0 && clear && exit 0
        else
		started=false
		if [ -e /etc/init.d/vdr ]; then			# c't-vdr
			/etc/init.d/vdr start
			started=true
		fi
		if [ $started == false ]; then
			if [ -e /etc/init.d/runvdr ]; then		# linvdr
				/etc/init.d/runvdr start
				started=true	
			fi
		fi
		if [ $started == false ]; then
			if [ -e /usr/local/bin/runvdr ]; then		# -|-
				echo  "   Checking wether /usr/local/bin/runvdr knows 'start'.."
				VAR="$(cat /usr/local/bin/runvdr | grep 'start)')"
				if [ "$VAR" != "" ]; then
					echo_yes
					/usr/local/bin/runvdr start
					started=true
				else
					echo_no
				fi
			fi
		fi
		if [ $started == true ]; then
			if [ -e /usr/bin/runvdr ]; then			# -|-
				echo "   Checking wether this /usr/bin/runvdr knows 'start'..."
				VAR="$(cat /usr/bin/runvdr | grep 'start)')"
				if [ "$VAR" != "" ]; then
					echo_yes
					/usr/bin/runvdr start
					started=true
				else
					echo_no
				fi

			fi
		fi
		echo -n -e "\\033[1;34m"
		echo ""
		echo "On most systems vdr should run now - if not, reboot."
		echo "GOODBYE! Exiting now."
		echo ""
		echo -e -n $NORMAL
	fi
}


function LoadDriver ()
{
	# debug messages to stdout [true/false]
	DEBUG_LOADDRIVER=false

	# <SPACE> separated lists