#!/bin/bash
+# Copyright (C) 2006 Andre Noll
+# Licensed under the LGPL, version 3. See COPYING and COPYING.LESSER.
if [[ "$(type -t _gsu_setup)" != "function" ]]; then
gsu_dir=${gsu_dir:-${BASH_SOURCE[0]%/*}}
_gsu_setup
fi
-export GSU_NODE_NAME_PATTERN='[a-zA-Z_]'
+_gsu_node_name_pattern='[a-zA-Z_]'
_get_geometry()
{
result="$y $x"
}
-gsu_infobox()
+_set_dialog_ret()
{
- _get_geometry
- dialog --infobox "$1" $result
-}
-
-gsu_checklist_all_on()
-{
- local header="$1"
- local items="$2"
- local i state opts num=0
-
- _get_geometry
- ops="$result 16"
- for i in $items; do
- let num++
- opts+=" $i $num on"
- done
- result=$(dialog --checklist "$header" $opts 3>&1 1>&2 2>&3 3>&-)
- ret="$?"
-}
-
-gsu_radiolist()
-{
- local header="$1"
- local selected_item="$2"
- local items="$3"
- local i state ops num=0
-
- _get_geometry
- ops="$result 16"
- for i in $items; do
- let num++
- if [[ "$i" == "$selected_item" ]]; then
- state="on"
- else
- state="off"
- fi
- ops+=" $i $num $state"
- done
- result=$(dialog --radiolist "$header" $ops 3>&1 1>&2 2>&3 3>&-)
- ret="$?"
+ local ec="$1"
+
+ case "$ec" in
+ 0) ret=$GSU_SUCCESS;;
+ 1) ret=1;; # cancelled
+ *)
+ result="dialog exit code $ec"
+ ret=-$E_GSU_DIALOG
+ esac
}
+# Open a dialog box which asks the user to input a text
+#
+# Usage: gsu_input_box <text> <init>
+#
+# <text> is displayed above of the input field, which is is preset to <init>.
+# The entered text is returned in $result. On success (user pressed OK)
+# the function returns zero. If the user selected Cancel, the return value is
+# one. On dialog errors, a negative error code is returned.
gsu_inputbox()
{
local g text="$1" init="$2"
_get_geometry
g="$result"
result="$(dialog --inputbox "$text" $g "$init" 3>&1 1>&2 2>&3 3>&-)"
- ret="$?"
+ _set_dialog_ret $?
}
+# Show the given file in a text box
+#
+# Usage: gsu_textbox <path>
+#
+# The box has an OK button which closes the box when activated.
gsu_textbox()
{
- local file="$1"
+ local g file="$1"
_get_geometry
- dialog --textbox "$file" $result
+ g="$result"
+
+ ret=-$E_GSU_DIALOG
+ result='textbox'
+ dialog --textbox "$file" $g
+ _set_dialog_ret $?
}
-# dialog segfaults if message is too long. Hence we always use a temporary file
+# Show a message in a text box
+#
+# Usage: gsu_msgbox <text>
+#
+# This is like gsu_textbox() but the text is passed as a string.
gsu_msgbox()
{
- local tmp="$(mktemp gsu_msgbox.XXXXXXXXXX)"
-
- if (($? != 0)); then
- dialog --msgbox "mktemp error" 0 0
- return
- fi
+ local tmp
+
+ # Some versions of dialog segfault if the text is too long. Hence we
+ # always use a temporary file.
+ gsu_make_tempfile 'gsu_msgbox.XXXXXXXXXX'
+ (($ret < 0)) && return
+ tmp="$result"
+ trap "rm -f $tmp" EXIT
echo "$1" > "$tmp"
gsu_textbox "$tmp"
- rm -f "$tmp"
-}
-
-gsu_cmd_output_box()
-{
- local tmp="$(mktemp)"
-
- if (($? != 0)); then
- dialog --msgbox "mktemp error" 0 0
- return
- fi
- $@ > "$tmp" 2>&1
- echo "exit code: $?" >> "$tmp"
- gsu_textbox "$tmp"
- rm -f "$tmp"
+ rm -f "$tmp" # ignore errors
}
-gsu_yesno()
-{
- local text="$1"
-
- _get_geometry
- dialog --yesno "$text" $result
- ret=$?
- if (($ret == 0)); then
- result="yes"
- elif (($ret == 1)); then
- result="no"
- else
- result=
- fi
-}
-
-gsu_menu()
+_gsu_menu()
{
local header="${1:-root}"
local items="$2"
opts+=" $i $num"
done
result="$(dialog --menu "$gsu_banner_txt ($header)" $opts 3>&1 1>&2 2>&3 3>&-)"
- ret="$?"
+ _set_dialog_ret $?
}
_get_level()
{
- local tmp="${1%%$GSU_NODE_NAME_PATTERN*}"
+ local tmp="${1%%$_gsu_node_name_pattern*}"
result="${#tmp}"
}
_get_subtree()
{
local tree="$1" root="${2%/}"
- local TAB=' '
+ local first TAB=' '
- first="$(grep -n "$TAB\{1,\}$root/" <<< "$tree")"
+ ret=-$E_GSU_MENU_TREE
+ result="subtree grep failed"
+ first="$(grep -n "$TAB\{1,\}$root/" <<< "$tree")" || return
[[ -z "$first" ]] && return
line_num="${first%%:*}"
#echo "line: $line_num, root: $root, indent level: $level"
result="$(sed -e "1,${line_num}d;" <<< "$tree" \
- | sed -e "/^$TAB\{1,$level\}$GSU_NODE_NAME_PATTERN/,\$d" \
+ | sed -e "/^$TAB\{1,$level\}$_gsu_node_name_pattern/,\$d" \
| sed -e "/^$TAB\{$(($level + 2))\}/d")"
- ret="$level"
+ if (($? != 0)); then
+ ret=-$E_GSU_MENU_TREE
+ result="sed command for subtree $root failed"
+ return
+ fi
+ ret=$GSU_SUCCESS
}
_get_root_nodes()
{
local tree="$1" TAB=' '
- result="$(grep "^${TAB}${GSU_NODE_NAME_PATTERN}" <<< "$tree")"
+ result="$(grep "^${TAB}${_gsu_node_name_pattern}" <<< "$tree")"
+ if (($? != 0)); then
+ ret=-$E_GSU_MENU_TREE
+ result="root node grep failed"
+ return
+ fi
+ ret=$GSU_SUCCESS
}
_browse()
local tree="$2" subtree="$3"
while :; do
- gsu_menu "$header" "$subtree"
- (($ret != 0)) && return
- [[ -z "$result" ]] && return
+ _gsu_menu "$header" "$subtree"
+ (($ret < 0)) && return
+ [[ -z "$result" ]] && return # menu was cancelled
if [[ "${result%/}" != "$result" ]]; then
old_header="$header"
header="$result"
_get_subtree "$tree" "$header"
+ (($ret < 0)) && return
_browse "$header" "$tree" "$result"
+ (($ret < 0)) && return
header="$old_header"
continue
fi
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