style(lib): color log, err and fatal outputs if T0_COLOR is true

lib.sh

@@ -15,16 +15,20 @@
 # used to check this file has been sourced
 export LIB_LOADED=true
 
-# ANSI escape codes for specific colors
-export LIB_COLOR_PASS="\e[7;38;05;242m PASS \e[0m"      # deprecated in favor of LIB_GREEN_PASS
-export LIB_COLOR_FAIL="\e[2;7;38;05;197;47m FAIL \e[0m" # deprecated in favor of LIB_RED_FAIL
-export LIB_GREEN_PASS="\e[7;38;05;242m PASS \e[0m"
-export LIB_RED_FAIL="\e[2;7;38;05;197;47m FAIL \e[0m"
-
 # ANSI escape codes for visual formatting
 export LIB_VISUAL_END="\e[0m"
 export LIB_FORMAT_DIM="\e[2m"
+
+# ANSI escape codes for specific colors
 export LIB_COLOR_DARK_GRAY="\e[38;05;8m"
+export LIB_COLOR_RED="\e[38;05;124m"
+export LIB_COLOR_RED_BRIGHT="\e[38;05;197m"
+
+# ANSI escape codes for specific text
+export LIB_COLOR_PASS="\e[7;38;05;242m PASS \e[0m"      # deprecated in favor of LIB_TEXT_PASS_GREEN
+export LIB_COLOR_FAIL="\e[2;7;38;05;197;47m FAIL \e[0m" # deprecated in favor of LIB_TEXT_FAIL_RED
+export LIB_TEXT_PASS_GREEN="\e[7;38;05;242m PASS \e[0m"
+export LIB_TEXT_FAIL_RED="\e[2;7;38;05;197;47m FAIL \e[0m"
 
 # on most systems, sed is GNU sed
 export SED="sed"
@@ -69,11 +73,16 @@ msgln() {
 }
 
 # Description: Log a message with INFO level and line number
+# Globals    : T0_COLOR (env) colored output if "true"
 # Args       : Any
 # STDERR     : INFO (pizza.sh:34) message + \n
 # Example    : log $LINENO pizza order received
 log() {
-  __log INFO "$@"
+  if [ "${T0_COLOR:-}" == "true" ]; then
+    __log "${LIB_COLOR_DARK_GRAY}INFO" "$@" "${LIB_VISUAL_END}"
+  else
+    __log INFO "$@"
+  fi
 }
 
 # Description: Log a message with DEBUG level and line number
@@ -94,15 +103,23 @@ debug() {
 # STDERR     : ERROR (pizza.sh:34) message + \n
 # Example    : err $LINENO oven temperature too high
 err() {
-  __log ERROR "$@"
+  if [ "${T0_COLOR:-}" == "true" ]; then
+    __log "${LIB_COLOR_RED}ERROR" "$@" "${LIB_VISUAL_END}"
+  else
+    __log ERROR "$@"
+  fi
 }
 
 # Description: Calls err with args, then exits with status 1
 # Args       : Any
 # STDERR     : FATAL (pizza.sh:34) message + \n
 # Example    : fatal $LINENO we've run out of cheese
 fatal() {
-  __log FATAL "$@"
+  if [ "${T0_COLOR:-}" == "true" ]; then
+    __log "${LIB_COLOR_RED_BRIGHT}FATAL" "$@" "${LIB_VISUAL_END}"
+  else
+    __log FATAL "$@"
+  fi
   exit 1
 }