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See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # #--------------------------------------------------------------------- #------------------------------ # Themes with 2 values. # # Two-value themes are handled differently to other n-value types of # theme: the first array entry in each theme is generally some unfilled # glyph, denoting an "off" value and the second value is the filled # version of the unfilled glyph and denotes an "on" value. Note that # you can always change the ordering of these values using the 'invert' # command-line option. PKG="byobu" [ -r "$HOME/.byoburc" ] && . "$HOME/.byoburc" [ -z "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="/usr" || export BYOBU_PREFIX . "${BYOBU_PREFIX}/lib/${PKG}/include/common" circles_2=(○ ●) diamonds_2=(◇ ◆) flags_2=(⚐ ⚑) hearts_2=(♡ ♥) squares_2=(◻ ◼) squares_small_2=(◽ ◾) stars_2=(☆ ★) faces_2=(☹ ☺) #------------------------------ # Themes with 4 values. vdots_thick_4=(⣀ ⣤ ⣶ ⣿) vdots_thin_4=(⢀ ⢠ ⢰ ⢸) fractions_4=(¼ ½ ¾ ¹) quadrants_4=(◔ ◑ ◕ ●) shades_4=(░ ▒ ▓ █) #------------------------------ # Themes with 5 values. circles_5=(◦ ○ ◎ ◉ ●) #------------------------------ # Themes with 6 values. dice_6=(⚀ ⚁ ⚂ ⚃ ⚄ ⚅) #------------------------------ # Themes with 8 values. hbars_8=(▏ ▎ ▍ ▌ ▋ ▊ ▉ █) vbars_8=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █) #------------------------------ # Themes with 10 values. circle_number_10=(➀ ➁ ➂ ➃ ➄ ➅ ➆ ➇ ➈ ➉) solid_numbers_a_10=(➊ ➋ ➌ ➍ ➎ ➏ ➐ ➑ ➒ ➓) solid_numbers_b_10=(❶ ❷ ❸ ❹ ❺ ❻ ❼ ❽ ❾ ❿) #------------------------------ # XXX: remember to update if you add new themes above! theme_list=\ ( 'circles_2 diamonds_2 flags_2 hearts_2 squares_2 squares_small_2 stars_2' 'vdots_thick_4 vdots_thin_4 fractions_4 quadrants_4 shades_4' 'circles_5' 'dice_6' 'hbars_8 vbars_8' 'circle_number_10 solid_numbers_a_10 solid_numbers_b_10' ) #------------------------------ default_decimal_places=2 a11y=n a11y_variable=BYOBU_A11Y debug_enabled=n newline= list=n quiet=n invert=n reverse=n script_name=${0##*/} min_default=0 max_default=100 width_default=5 zero_as_space=n theme_default=vbars_8 permissive=n debug() { msg="$*" [ $debug_enabled = y ] && echo "DEBUG: $msg" } error() { msg="$*" echo "ERROR: $msg" >&2 } die() { error "$*" exit 1 } check_a11y() { eval result="\$$a11y_variable" [ ! -z "$result" ] && a11y=y } # return 1 if expression specified is true (no return if false) bc_test() { expr="$*" echo $(echo "if ( $expr ) { print \"1\" }"|bc -l) } assert() { expr="$1" str="$2" debug "assert: expr='$expr'" ret=$(bc_test "$expr") [ ! -z "$ret" ] && return die "$str" } usage() { cat < $script_name [options] $script_name Options: -a : Accessibility mode: only output ASCII. (Also enabled if variable '$a11y_variable' set). -b : Display current value as space if zero, rather than lowest 'value' of theme. -c : Current value of your indicator. -d : Enable debug output. -e : Number of decimal places to use for accessibility mode (default=$default_decimal_places). -h : Show this help. -i : Invert colour scheme (rating themes only). -l : List available themes. If '-t' also specified, show all values for specified theme. -m : Minimum value (default=$min_default). -n : Supress output of newline character. -p : Permissive mode - if current value out of bounds, set it to the nearest bound (min or max). -q : Suppress messages (requires '-t'). -r : Reverse 'direction' of display (rating theme only). -t : Name of theme (default=$theme_default). -u : Specify a user theme (2 or more values). -w : Width of rating theme (default=$width_default). -x : Maximum value (default=$max_default). Examples: # Display character representing 27% using default theme. $script_name 27 # As above. $script_name -c 27 # Example showing floating-point and negative values. $script_name -c 1.100001 -m -5.00234 -x 2.71828 -t dice_6 # Use accessibility mode to display a percentage value # (rounded to nearest percentage) $script_name -m -22.613 -x 5.00212 -c 0.10203 -a -e 0 # Display value using a "rating theme" (displayed left-to-right). $script_name -c 83 -t stars_2 # Display right-to-left inverted "rating theme". $script_name -c 60 -t diamonds_2 -ri # Display all glyphs in 'solid_numbers_a_10' theme. $script_name -l -t solid_numbers_a_10 # Display a user-specified rating theme 10 glyphs wide. $script_name -c 666.321 -m -273.15 -x 1370 -u "· ☢" -w 10 # A multi-element user theme (this prints 'e'). $script_name -c 50 -u "a b c d e f g h i j" Notes: - Arguments of type "" denote an integer value, whereas arguments of type "" denotes either an integer or a floating-point number. - The final '_' in a theme name denotes the number of glyphs in it. - "Rating themes" are those with only 2 values. - The argument to '-u' must contain space-delimited characters. EOT } # this is horribly inefficient - we should probably do some clever # tricks using printf formats to avoid the silly while loop. # Additionally, it is rather similar to show_theme_entry() but was split # out from that in a vain attempt to make the overall logic clearer :) show_rating_theme() { theme="$1" min="$2" max="$3" current="$4" percent="$5" if [ $invert = n ] then on=1 off=0 else on=0 off=1 fi debug "width=$width" debug "percent=$percent" percent_per_glyph=$(echo "scale=4;100/${width}"|bc -l) assert "$percent_per_glyph > 1.0" "width ($width) too great" debug "percent_per_glyph=$percent_per_glyph" debug "glyph_count=$glyph_count" g=$percent_per_glyph i=0 value="" while [ $i -lt $width ] do if [ ! -z "$(bc_test "$g <= $percent")" ] then eval content="\${$theme[${on}]}" else eval content="\${$theme[${off}]}" fi if [ $reverse = n ] then value="${value}${content}" else value="${content}${value}" fi g=$(echo "$g + $percent_per_glyph"|bc -l) i=$((i + 1)) done echo $newline "$value" } show_theme_entry() { theme="$1" min="$2" max="$3" current="$4" debug "theme=$theme" debug "min=$min" debug "max=$max" debug "current=$current" range=$(echo "($max - $min)"|bc -l) quotient=$(echo "scale=4;((${current} - ${min})/${range})"|bc -l) percent=$(echo "$quotient * 100"|bc -l) glyph_count=$(echo $theme|awk -F\_ '{print $NF}') debug "range=$range" debug "quotient=$quotient" debug "percent=$percent" debug "glyph_count=$glyph_count" # just ASCII please if [ $a11y = y ] then [ -z "$decimal_places" ] && decimal_places=$default_decimal_places val=$(echo|awk -v p=$percent -v dp=$decimal_places '{printf("%.*f", dp, p)}') echo $newline "$val" return fi if [ $glyph_count -eq 2 ] then show_rating_theme "$theme" "$min" "$max" "$current" "$percent" return fi percent_per_glyph=$(echo "100/$glyph_count"|bc -l) debug "percent_per_glyph=$percent_per_glyph" assert "$percent_per_glyph > 1.0" "width ($width) too great" # with this scheme, assuming current value is 0-100 and theme has 10 # elements: # # current glyph from theme # # 0-19 1st # 20-29 2nd # 30-39 3rd # : # 90-99 9th # 100 10th i=$(echo|awk \ -v quotient=$quotient \ -v glyph_count=$glyph_count \ '{ x= int( (quotient * glyph_count) ) - 1; x = (x > (glyph_count-1) ? (glyph_count-1) : x); if ( x < 0 ) x = 0; printf("%d", x); }') debug "index=$i" eval content="\${$theme[$i]}" [ ! -z "$(bc_test "$current == 0")" -a $zero_as_space = y ] && content=' ' echo $newline "$content" return } list_theme() { theme="$1" eval content="\${$theme[@]}" echo for c in $content do printf "$c " done echo -e "\n" } list_themes() { for entry in ${theme_list[@]} do for arg in "$entry" do echo "$arg" done done } theme_valid() { theme="$1" [ -z "`list_themes|grep "^${theme}$"`" ] && return 1 return 0 } check_a11y # XXX: the seemingly pointless 'tr' calls translate unicode dashes (look # closely!) into ASCII dashes. This is required since 'bc' borks on # unicode and it is easy to mistakenly pass unicode dashes if you paste # characters from another application, such as a web-browser. while getopts "abc:de:hilm:npqrt:u:w:x:" opt do case "$opt" in a) a11y=y ;; b) zero_as_space=y ;; c) current=$(echo $OPTARG|tr '−' '-') ;; d) debug_enabled=y ;; e) decimal_places=$OPTARG ;; h) usage exit 0 ;; i) invert=y ;; l) list=y ;; m) min=$(echo $OPTARG|tr '−' '-') ;; n) newline=-n ;; p) permissive=y ;; q) quiet=y ;; r) reverse=y ;; t) theme=$OPTARG ;; u) user_theme="$OPTARG" ;; w) width=$OPTARG ;; x) max=$(echo $OPTARG|tr '−' '-') ;; esac done shift $[$OPTIND-1] if [ ! -z "$user_theme" ] then elements=$(echo "$user_theme"|awk '{print NF}') assert "$elements >= 2" "user themes need >= 2 values" # create new theme name="_user_${elements}" eval "$name=($user_theme)" # add it to list theme_list=("${theme_list[@]}" $name) [ -z "$theme" ] && theme=$name fi if [ "$list" = y ] then if [ -z "$theme" ] then list_themes && exit 0 else theme_valid "$theme" || die "invalid theme: $theme" [ "$quiet" = n ] && echo "Listing theme '$theme'" list_theme $theme && exit 0 fi fi [ -z "$min" ] && min=$min_default [ -z "$max" ] && max=$max_default [ -z "$width" ] && width=$width_default assert "$min <= $max" "minimum ($min) > maximum ($max)" assert "$min != $max" "minimum ($min) == maximum" [ -z "$current" -a ! -z "$1" ] && current="$1" if [ -z "$current" ] then error "must specify current value" usage exit 1 fi if [ $permissive = n ] then assert "$current >= $min" "current ($current) < minimum ($min)" assert "$current <= $max" "current ($current) > maximum ($max)" else [ ! -z "$(bc_test "$current < $min")" ] && current=$min [ ! -z "$(bc_test "$current > $max")" ] && current=$max fi [ -z "$theme" ] && theme=$theme_default theme_valid "$theme" || die "invalid theme: $theme" show_theme_entry $theme $min $max $current exit 0