Initial commit of source

lib/output.sh

@@ -0,0 +1,95 @@
+#!/usr/bin/env bash
+
+_prettytable_char_top_left="┌"
+_prettytable_char_horizontal="─"
+_prettytable_char_vertical="│"
+_prettytable_char_bottom_left="└"
+_prettytable_char_bottom_right="┘"
+_prettytable_char_top_right="┐"
+_prettytable_char_vertical_horizontal_left="├"
+_prettytable_char_vertical_horizontal_right="┤"
+_prettytable_char_vertical_horizontal_top="┬"
+_prettytable_char_vertical_horizontal_bottom="┴"
+_prettytable_char_vertical_horizontal="┼"
+
+
+# Escape codes
+
+# Default colors
+_prettytable_color_blue="0;34"
+_prettytable_color_green="0;32"
+_prettytable_color_cyan="0;36"
+_prettytable_color_red="0;31"
+_prettytable_color_purple="0;35"
+_prettytable_color_yellow="0;33"
+_prettytable_color_gray="1;30"
+_prettytable_color_light_blue="1;34"
+_prettytable_color_light_green="1;32"
+_prettytable_color_light_cyan="1;36"
+_prettytable_color_light_red="1;31"
+_prettytable_color_light_purple="1;35"
+_prettytable_color_light_yellow="1;33"
+_prettytable_color_light_gray="0;37"
+
+# Somewhat special colors
+_prettytable_color_black="0;30"
+_prettytable_color_white="1;37"
+_prettytable_color_none="0"
+
+function _prettytable_prettify_lines() {
+    cat - | sed -e "s@^@${_prettytable_char_vertical}@;s@\$@	@;s@	@	${_prettytable_char_vertical}@g"
+}
+
+function _prettytable_fix_border_lines() {
+    cat - | sed -e "1s@ @${_prettytable_char_horizontal}@g;3s@ @${_prettytable_char_horizontal}@g;\$s@ @${_prettytable_char_horizontal}@g"
+}
+
+function _prettytable_colorize_lines() {
+    local color="$1"
+    local range="$2"
+    local ansicolor="$(eval "echo \${_prettytable_color_${color}}")"
+
+    cat - | sed -e "${range}s@\\([^${_prettytable_char_vertical}]\\{1,\\}\\)@"$'\E'"[${ansicolor}m\1"$'\E'"[${_prettytable_color_none}m@g"
+}
+
+function prettytable() {
+    local cols="${1}"
+    local color="${2:-none}"
+    local input="$(cat -)"
+    local header="$(echo -e "${input}"|head -n1)"
+    local body="$(echo -e "${input}"|tail -n+2)"
+    {
+        # Top border
+        echo -n "${_prettytable_char_top_left}"
+        for i in $(seq 2 ${cols}); do
+            echo -ne "\t${_prettytable_char_vertical_horizontal_top}"
+        done
+        echo -e "\t${_prettytable_char_top_right}"
+
+        echo -e "${header}" | _prettytable_prettify_lines
+
+        # Header/Body delimiter
+        echo -n "${_prettytable_char_vertical_horizontal_left}"
+        for i in $(seq 2 ${cols}); do
+            echo -ne "\t${_prettytable_char_vertical_horizontal}"
+        done
+        echo -e "\t${_prettytable_char_vertical_horizontal_right}"
+
+        echo -e "${body}" | _prettytable_prettify_lines
+
+        # Bottom border
+        echo -n "${_prettytable_char_bottom_left}"
+        for i in $(seq 2 ${cols}); do
+            echo -ne "\t${_prettytable_char_vertical_horizontal_bottom}"
+        done
+        echo -e "\t${_prettytable_char_bottom_right}"
+    } | column -t -s $'\t' | _prettytable_fix_border_lines | _prettytable_colorize_lines "${color}" "2"
+}
+
+table_output() {
+  local n_cols=$#
+  {  
+    printf "$(join_by "\t" "$@")\n"
+    cat -
+  } | prettytable "$n_cols" "${TABLE_HEADER_COLOR:-gray}"
+}