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Diffstat (limited to 'src/core/libs/lib-ui.sh')
| -rw-r--r-- | src/core/libs/lib-ui.sh | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/core/libs/lib-ui.sh b/src/core/libs/lib-ui.sh new file mode 100644 index 0000000..7fc611f --- /dev/null +++ b/src/core/libs/lib-ui.sh @@ -0,0 +1,246 @@ +#!/bin/sh +# TODO: lot's of implementation work still open in this library. especially the dialog stuff + + +# Taken from setup. we store dialog output in a file. TODO: can't we do this with variables? +ANSWER="/tmp/.setup" + + + +### Functions that your code can use. Cli/dialog mode is fully transparant. This library takes care of it ### + + +# ask the user a password. return is stored in $PASSWORD or $<TYPE>_PASSWORD +# $1 type (optional. eg 'svn', 'ssh'). +ask_password () +{ + [ "$var_UI_TYPE" = dia ] && { _dia_ask_password "$@" ; return $? ; } + [ "$var_UI_TYPE" = cli ] && { _cli_ask_password "$@" ; return $? ; } +} + + +# ask a yes/no question. +# $1 question +# returns 0 if response is yes/y (case insensitive). 1 otherwise +# TODO: support for default answer +ask_yesno () +{ + [ -z "$1" ] && die_error "ask_yesno needs a question!" + [ "$var_UI_TYPE" = dia ] && { _dia_ask_yesno "$@" ; return $? ; } + [ "$var_UI_TYPE" = cli ] && { _cli_ask_yesno "$@" ; return $? ; } +} + + +# ask for a string. +# $1 question +# echo's the string the user gave. +# returns 1 if the user cancelled, 0 otherwise +ask_string () +{ + [ -z "$1" ] && die_error "ask_string needs a question!" + [ "$var_UI_TYPE" = dia ] && { _dia_ask_string "$@" ; return $? ; } + [ "$var_UI_TYPE" = cli ] && { _cli_ask_string "$@" ; return $? ; } +} + + +# TODO: we should have a wrapper around this function that keeps trying until the user entered a valid numeric? +# ask for a number. +# $1 question +# $2 lower limit (optional) +# $3 upper limit (optional) +# echo's the number the user said +# returns 1 if the user cancelled or did not enter a numeric, 0 otherwise +ask_number () +{ + [ -z "$1" ] && die_error "ask_number needs a question!" + [ -n "$2" ] && [[ $2 = *[^0-9]* ]] && die_error "ask_number \$2 must be a number! not $2" + [ -n "$3" ] && [[ $3 = *[^0-9]* ]] && die_error "ask_number \$3 must be a number! not $3" + [ "$var_UI_TYPE" = dia ] && { _dia_ask_number "$1" "$2" "$3" ; return $? ; } + [ "$var_UI_TYPE" = cli ] && { _cli_ask_number "$1" "$2" "$3" ; return $? ; } +} + + +# ask the user to choose something +# TODO: exact implementation, which arguments etc? +ask_option () +{ + [ "$var_UI_TYPE" = dia ] && { _dia_ask_option "$@" ; return $? ; } + [ "$var_UI_TYPE" = cli ] && { _cli_ask_option "$@" ; return $? ; } +} + + +# follow the progress of something by showing it's log, updating real-time +# $1 title +# $2 logfile +follow_progress () +{ + [ -z "$1" ] && die_error "follow_progress needs a title!" + [ -z "$2" ] && die_error "follow_progress needs a logfile to follow!" + [ "$var_UI_TYPE" = dia ] && { _dia_follow_progress "$1" "$2" ; return $? ; } + [ "$var_UI_TYPE" = cli ] && { _cli_follow_progress "$1" "$2" ; return $? ; } +} + + +# taken from setup +printk() +{ + case $1 in + "on") echo 4 >/proc/sys/kernel/printk ;; + "off") echo 0 >/proc/sys/kernel/printk ;; + esac +} + + + + + +### Internal functions, supposed to be only used internally in this library ### + + +# DIALOG() taken from setup +# an el-cheapo dialog wrapper +# +# parameters: see dialog(1) +# returns: whatever dialog did +_dia_DIALOG() +{ + dialog --backtitle "$TITLE" --aspect 15 "$@" + return $? +} + + +# geteditor(). taken from original setup code. prepended dia_ because power users just export $EDITOR on the cmdline. +# prompts the user to choose an editor +# sets EDITOR global variable +# +# TODO: clean this up +_dia_get_editor() { + _dia_DIALOG --menu "Select a Text Editor to Use" 10 35 3 \ + "1" "nano (easier)" \ + "2" "vi" 2>$ANSWER + case $(cat $ANSWER) in + "1") EDITOR="nano" ;; + "2") EDITOR="vi" ;; + *) EDITOR="nano" ;; + esac +} + +# TODO: pass disks as argument to decouple backend logic +# Get a list of available disks for use in the "Available disks" dialogs. This +# will print the disks as follows, getting size info from hdparm: +# /dev/sda: 640133 MBytes (640 GB) +# /dev/sdb: 640135 MBytes (640 GB) +_dia_getavaildisks() +{ + # NOTE: to test as non-root, stick in a 'sudo' before the hdparm call + for i in $(finddisks); do echo -n "$i: "; hdparm -I $i | grep -F '1000*1000' | sed "s/.*1000:[ \t]*\(.*\)/\1/"; echo "\n"; done +} + + +# taken from setup code. edited to echo the choice, not perform it +# TODO: also an ugly function +_dia_ask_bootloader() +{ + _dia_DIALOG --colors --menu "Which bootloader would you like to use? Grub is the Arch default.\n\n" \ + 10 65 2 \ + "GRUB" "Use the GRUB bootloader (default)" \ + "None" "\Zb\Z1Warning\Z0\ZB: you must install your own bootloader!" 2>$ANSWER + cat $ANSWER +} + + +_dia_follow_progress () +{ + title=$1 + logfile=$2 + _dia_DIALOG --title "$1" --no-kill --tailboxbg "$2" 18 70 2>$ANSWER +} + + +_dia_ask_yesno () +{ + dialog --yesno "$1" 10 55 # returns 0 for yes, 1 for no +} + + +_cli_ask_password () +{ + if [ -n "$1" ] + then + type_l=`tr '[:upper:]' '[:lower:]' <<< $1` + type_u=`tr '[:lower:]' '[:upper:]' <<< $1` + else + type_l= + type_u= + fi + + echo -n "Enter your $type_l password: " + stty -echo + [ -n "$type_u" ] && read ${type_u}_PASSWORD + [ -z "$type_u" ] && read PASSWORD + stty echo + echo +} + +_cli_ask_yesno () +{ + echo -n "$1 (y/n): " + read answer + answer=`tr '[:upper:]' '[:lower:]' <<< $answer` + if [ "$answer" = y -o "$answer" = yes ] + then + return 0 + else + return 1 + fi +} + + +_cli_ask_string () +{ + echo -n "$@: " + read answ + echo "$answ" + [ -z "$answ" ] && return 1 + return 0 +} + + +_cli_ask_number () +{ + #TODO: i'm not entirely sure this works perfectly. what if user doesnt give anything or wants to abort? + while true + do + str="$1" + [ -n "$2" ] && str2="min $2" + [ -n "$3" ] && str2="$str2 max $3" + [ -n "$str2" ] && str="$str ( $str2 )" + echo "$str" + read answ + if [[ $answ = *[^0-9]* ]] + then + show_warning "$answ is not a number! try again." + else + break + fi + done + echo "$answ" + [ -z "$answ" ] && return 1 + return 0 +} + + +_cli_ask_option () +{ + die_error "_cli_ask_option Not yet implemented" +} + + +_cli_follow_progress () +{ + title=$1 + logfile=$2 + echo "Title: $1" + tail -f $2 +} + |