amarok-svn.sh

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#!/bin/bash

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# Amarok-svn
# ============
# This script installs the current development (SVN) version of Amarok on your computer.
# If you've run it once, and then run it again, it will update your version of Amarok and only compile the new files.
#
# Made by Jocke "Firetech" Andersson.
# Idea and inspiration from a small script by Greg "oggb4mp3" Meyer.
# # # # # # # # # # # # # # # # # # # # # #   # # # # #   # # #   # #   # #   # #   #   #

echo
echo "Amarok-svn (Version 3.2.1)"
echo "============================"
echo

## Define global variables
LANG="C" #Make outputs in English, like the script itself.
RCFILE="amarok-svnrc" #Settings file, will end up in '`kde-config --localprefix`/share/config/'.
C_STEP="1" #The current step of the installation process
S_STEPS="11" #Number of steps in the installation process
TMP_FILES="" #Will be filled with URLs to temporary files

## Define functions
function Dialog {
  kdialog --icon "amarok" --title "Amarok-svn$KDTITLE" "$@"
}

function RemoveTemp {
  rm -f $TMP_FILES
}

function Error {
  RemoveTemp
  echo
  echo -e "ERROR: $1"
  if [ "$2" != "--no-dialog" ]; then
    Dialog --error "$1"
  fi
  exit 1 #Exit with error
}

function ReadConfig {
  kreadconfig --file "$RCFILE" --group Settings --key "$1"
}

function WriteConfig {
  kwriteconfig --file "$RCFILE" --group Settings --key "$1" "$2"
}

function CheckBinary {
  if [ ! -x "`which $1`" ]; then #check if $1 is in $PATH and can be executed
    ERROR_TEXT="Amarok-svn requires $1, which wasn't found in your \$PATH!"
    if [ "$2" ]; then
      ERROR_TEXT="$ERROR_TEXT ($2)"
    fi 
    Error "$ERROR_TEXT" $3
  fi
}

function FlagUsage {
  echo "Usage: $0 [options] [builddir]"
  echo
  echo "Amarok-svn installs the current development (SVN) version of Amarok on your computer."
  echo
  echo "Options:"
  echo -e "  -r, --reset\t\tAsk for settings again."
  echo -e "  -s, --select-server\tAsk which SVN server to use. (Only needed if you want to use your SVN account.)"
  echo -e "  -c, --clean\t\tClean the source tree before compiling Amarok."
  echo -e "  -h, --help\t\tShow this message."
  echo
  echo "Arguments:"
  echo -e "  builddir\t\tDownload and build Amarok in this directory. Default is '[your current dir]/amarok-svn'."
  echo
  echo "Notes:"
  echo "  * Options can NOT be fused together! (I.E. You can't use '-cr', you have to use '-c -r'.)"
  echo "  * Amarok-svn will download the Amarok sources directly into the folder you choose, without creating any subdirectory!"
  echo
  exit 1
}

function Clean {
  unsermake clean
  if [ "$?" != "0" ]; then #If the command didn't finish successfully
    Error "Failed to clean the source tree!"
  fi
}

function Compile {
  COMP_START=`date +%s`
  #Run unsermake twice because of some files that gets forgotten sometimes
  #(We don't want to compile as root in unsermake install, and it doesn't hurt)
  unsermake && unsermake
  if [ "$?" = "0" ]; then #If the command did finish successfully
    echo
    #stopwatch.
    let COMP_TIME=`date +%s`-COMP_START
    let COMP_M=COMP_TIME/60
    let COMP_S=COMP_TIME%60
    echo "Compilation successful after $COMP_M minute(s) and $COMP_S second(s)."
  else
    echo
    if [ "$CLEAN_BUILD" = "0" ]; then
      echo "Compilation Failed!"
      Dialog --warningyesno "Compilation failed!\nSometimes, a clean rebuild can fix this.\nDo you want to retry compiling with a clean source tree?\nIf you answer No, Amarok-svn will exit."
      if [ "$?" = "0" ]; then #If user said yes
        echo "Retrying with a clean source tree."
        CLEAN_BUILD="1"
        Clean
        Compile
      else
        Error "Compilation failed! Amarok was NOT installed/updated."
      fi
    else
      Error "Compilation failed! Amarok was NOT installed/updated."
    fi
  fi
}

## Handle --flags
# set default values
RESET_CONF="0"
CLEAN_BUILD="0"
SELECT_SERVER="0"
BUILD_DIR="`pwd`/amarok-svn"
# read flags values
BUILD_DIR_SET="0"
for flag; do
  case "$flag" in
    -r|--reset)
      RESET_CONF="1"
      ;;
    -c|--clean)
      CLEAN_BUILD="1"
      let S_STEPS=S_STEPS+1
      ;;
    -s|--select-server)
      SELECT_SERVER="1"
      ;;
    -h|--help)
      FlagUsage
      ;;
    -*)
      echo "Unknown option '$flag'."
      echo
      echo "---------------------- ---- --- -- -- -- - -"
      echo
      FlagUsage
      ;;
    *)
      if [ "$BUILD_DIR_SET" = "0" ]; then
        BUILD_DIR="$flag"
        BUILD_DIR_SET="1"
      else
        echo "Excessive argument: '$flag'."
        echo
        echo "---------------------- ---- --- -- -- -- - -"
        echo
        FlagUsage
      fi
      ;;
  esac
done

## Check requirements
CheckBinary kdialog "" --no-dialog
CheckBinary svn "Version 1.1 or newer is needed."
CheckBinary kde-config "kde-config sometimes falls out of the \$PATH for some reason."
CheckBinary kreadconfig
CheckBinary kwriteconfig

## Check the build directory
if [ -e "$BUILD_DIR" -a ! -f "$BUILD_DIR/.amarok-svn-dir" ]; then #if directory exist and isn't watermarked
  if [ -d "$BUILD_DIR" ]; then
    Dialog --warningyesno "The directory you choosed to build in ($BUILD_DIR) already exists, and it wasn't detected as an Amarok-svn directory.\nFiles in this directory can possibly be overwritten by the Amarok-svn procedures.\nDo you want to use this directory anyway?"
    if [ "$?" != "0" ]; then #If the user said no, exit.
      exit 1
    fi
  else
    Error "The build directory you have chosen exists, but it's not a directory!"
  fi
fi

## Check if user is root
if [ "`id -u`" = "0" ]; then #if user is root
  Dialog --warningcontinuecancel "You are running Amarok-svn as root! This is not required, and generally not a good idea.\n(Amarok-svn will get root privileges by itself when needed, see the settings for details.)\nAre you sure you want to continue anyway?" --dontagain $RCFILE:root_warning
  if [ "$?" != "0" ]; then #If the user said cancel.
    exit 1
  fi
fi


## Settings
if [ -s "`kde-config --localprefix`/share/config/$RCFILE" -a "$RESET_CONF" != "1" ]; then #If the settings exists and the user doesn't want to change them.

  GET_LANG="`ReadConfig get_lang`"
  if  [ -z "$GET_LANG" ]; then #Save default value if empty
    GET_LANG="en_US"
    WriteConfig get_lang "$GET_LANG"
  fi
  CONF_FLAGS_RAW="`ReadConfig conf_flags`"
  CONF_FLAGS=""
  for flag in $CONF_FLAGS_RAW; do
    CONF_FLAGS="$CONF_FLAGS `echo $flag | sed -e \"s/__/--/\"`"
  done
  HOW_ROOT="`ReadConfig how_root`"
  if  [ -z "$HOW_ROOT" ]; then #Save default value if empty
    HOW_ROOT="kdesu"
    WriteConfig how_root "$HOW_ROOT"
  fi
  USE_ID="`ReadConfig use_id`"
  if  [ -z "$USE_ID" ]; then #Save default value if empty
    USE_ID="0"
    WriteConfig use_id "$USE_ID"
  fi

else

  ## Language
  AUTO_LANG="`kreadconfig --group Locale --key Language | sed -re \"s/:.+//\"`"
  if [ "$AUTO_LANG" != "" ]; then #Generally, if the user is running KDE
    Dialog --yesno "I detected that you are running KDE with language '$AUTO_LANG'.\nIf this is correct (and you want it that way), I will download localization and documentation for Amarok in that language.\nDo you want this language?"
  fi
  if [ "$?" = "0" -a "$AUTO_LANG" != "" ]; then #If the user said yes, and is running KDE...
    GET_LANG="$AUTO_LANG"
  else
    Dialog --msgbox "Which language do you want to download localization and documentation for?\nA list of available languages is available at http://websvn.kde.org/trunk/l10n/ (It is CaSe sensitive!)\nIf you want to use the default language (American English), either leave this empty or set it to 'en_US' (it's not in the list above).\n(Click Ok to get to the input box.)"
    GET_LANG="`Dialog --inputbox \"Specify language to download localization and documentation for\"`"
  fi
  if  [ -z "$GET_LANG" ]; then
    GET_LANG="en_US"
  fi
  WriteConfig get_lang "$GET_LANG"

  ## ./configure flags
  Dialog --yesno "Do you want to use any extra configuration options (in addition to '--prefix=`kde-config --prefix` --enable-debug=full')?\nNo extra options is the default, and that works fine.\n(For a list of available flags, say yes and enter 'help' (CaSe insensitive) in the box, then wait for Amarok-svn to get to the configuration step (step 8).)"
  if [ "$?" = "0" ]; then #If the user said yes
    CONF_FLAGS_RAW="`Dialog --inputbox \"Specify extra configuration options to use\"`"
    if [ "`echo $CONF_FLAGS_RAW | tr A-Z a-z`" != "help" ]; then
      CONF_FLAGS=""
      CONF_FLAGS_SAVE=""
      for flag in $CONF_FLAGS_RAW; do
        if [ "$flag" != "--help" ]; then
          CONF_FLAGS="$CONF_FLAGS $flag"
          CONF_FLAGS_SAVE="$CONF_FLAGS_SAVE `echo $flag | sed -e \"s/--/__/\"`"
        fi
      done
      WriteConfig conf_flags "$CONF_FLAGS_SAVE"
    else
      CONF_HELP="true"
    fi
  fi

  ## What to use to get root privileges for installation?
  HOW_ROOT="`kdialog --radiolist \"How do you want Amarok-svn to get root privileges for the install/uninstall commands?\" kdesu \"With  'kdesu' (default, choose this if unsure)\" on sudo \"With 'sudo'\" off \"su -c\" \"With 'su -c'\" off`"
  if [ -z "$HOW_ROOT" ]; then #Fallback if the user pressed cancel
    HOW_ROOT="kdesu"
  fi
  WriteConfig how_root "$HOW_ROOT"

  USE_ID="0" #Assume default answer
  Dialog --yesno "Do you want to use build ID?\nThis feature is generally not needed, and often makes the compiling time longer.\nIf you use it, you can tell from the About box in Amarok when your revision was compiled.\nDefault answer is No, you can get this information from other places."
  if [ "$?" = "0" ]; then #If the user said yes
    USE_ID="1"
  fi
  WriteConfig use_id "$USE_ID"
fi

if [ "$SELECT_SERVER" = "1" ]; then #SVN server selection
  WriteConfig svn_server "`kdialog --title \"$KD_TITLE\" --inputbox \"Specify which SVN server you want to use. Default is 'svn://anonsvn.kde.org'.\"`"
fi

SVN_SERVER="`ReadConfig svn_server`"
if  [ -z "$SVN_SERVER" ]; then #Save default value if empty
  SVN_SERVER="svn://anonsvn.kde.org"
  WriteConfig svn_server "$SVN_SERVER"
fi

## Start the installation process and show the settings
INST_START=`date +%s`
echo "Used configuration"
echo "--------------------"
echo  "(Use --help to get information on how to change it.)"
echo 

echo -e "SVN server:\t\t\t\t\t$SVN_SERVER"
echo -e "Language for localization and documentation:\t$GET_LANG"
if [ "$CONF_HELP" != "true" -a "`echo $CONF_FLAGS`" ]; then
  echo -e "Extra configuration options:\t\t\t`echo $CONF_FLAGS`" #`echo ...` strips the preceeding space.
fi
echo -e "Command for getting root privileges:\t\t$HOW_ROOT"
echo -en "Build ID:\t\t\t\t\t"
if [ "$USE_ID" = "1" ]; then
  echo "On"
else
  echo "Off"
fi
echo -e "Build directory:\t\t\t\t$BUILD_DIR"
echo -ne "Clean source tree:\t\t\t\t"
if [ "$CLEAN_BUILD" = "1" ]; then
  echo "On"
else
  echo "Off"