From 61026973046b4afa6b57d01f33df7910695f3300 Mon Sep 17 00:00:00 2001
From: Philip Wittamore <philip@wittamore.com>
Date: Sun, 18 May 2025 15:08:02 +0200
Subject: update

---
 pb_colour | 61 ++++++++++++++++++++++++++++++++++++++-----------------------
 1 file changed, 38 insertions(+), 23 deletions(-)

(limited to 'pb_colour')

diff --git a/pb_colour b/pb_colour
index 0012205..5fe6240 100755
--- a/pb_colour
+++ b/pb_colour
@@ -1,49 +1,64 @@
 #!/usr/bin/env bash
 
-#--- 256 colour functions 
-# requires pb_number
+#--- 88/256 colour functions 
 # usage:
 #   source ./pb
 #   printf %b "$(pb_bg 196)$(pb_fg 254) RED $(pb_nc)\n"
 
-pb_nc() {
+pb_ctest() {
 
-  if [ -z "$TERM" ] || (($(tput colors) != 256)); then
-    return 1
+  if [ -z "$TERM" ] ; then
+    return 0
+  fi
+  
+  case $1 in '' | *[!0-9]* ) return 0;; esac
+
+  local x
+  x=$(tput colors)
+
+  if [ -z "$1" ] || (("$1" > "$x")) ; then
+    return 0
   fi
 
-  printf '\033[0;0m';
-  return 0	
+  return 1
 }
 
-pb_fg() {
+pb_terminfo() {
+  local x
+  x=$(tput colors)
+  echo "TERM = $TERM : $x colours supported"	
+}
+
+pb_nc() {
 
-  if [ -z "$TERM" ] || (($(tput colors) != 256)); then
+  if eval pb_ctest ; then
+    printf '\033[0;0m'
+    return 0
+  else
     return 1
-  fi
+  fi  	
+}
 
-  if [ -z "$1" ] || (("$1" > 255)) || ! pb_isuint "$1" ; then
+pb_fg() {
+
+  if eval pb_ctest ; then
+    printf %s "\033[38;5;$1m"
+    return 0
+  else
     return 1
   fi
 
-  printf %s "\033[38;5;$1m"
-  return 0
-
 }
 
 pb_bg() {
 
-  if [ -z "$TERM" ] || (($(tput colors) != 256)); then
+  if eval pb_ctest ; then
+    printf %s "\033[48;5;$1m"
+    return 0
+  else
     return 1
   fi
 
-  if [ -z "$1" ] || (("$1" > 255)) || ! pb_isuint "$1" ; then
-    return 1
-  fi
-
-  printf %s "\033[48;5;$1m"
-  return 0
-
 }    
 
 pb_ef() {
@@ -65,7 +80,7 @@ pb_ef() {
 	    return 0
 	    ;;
 	    
-	  "underscore")
+	  "underline")
 	    printf %s "\033[4m"
 	    return 0
 	    ;;
-- 
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