1 files changed, 136 insertions, 0 deletions
diff --git a/include/error.sh b/include/error.sh
new file mode 100644
index 0000000..dd0ddce
--- /dev/null
+++ b/include/error.sh
@@ -0,0 +1,136 @@
+#!/bin/bash
+
+_E_WIDTH=15
+_E_COUNT=0
+_E_FLAGS=0
+_E_FLAGS_STR=""
+
+_E_FLAG_FAILURE=1
+_E_FLAG_EXIT_STANDARD=2
+_E_FLAG_EXIT_NONSTANDARD=4
+_E_FLAG_EXIT_SIGNALED=8
+_E_FLAG_EXIT_PEBKAC=16
+_E_FLAG_HALT_AND_CATCH_FIRE=32
+_E_FLAG_BAD_ARGUMENT=64
+_E_FLAG_BAD_RETVAL=128
+_E_FLAG_BAD_PACKAGE=256
+_E_FLAG_RES4=512
+_E_FLAG_RES5=1024
+_E_FLAG_RES6=2048
+_E_FLAG_RES7=4096
+_E_FLAG_RES8=8192
+_E_FLAG_RES9=16384
+_E_FLAG_INTERNAL=32768
+#_E_FLAG_UNUSED=65536
+
+function error_mask_report
+{
+    local flags=$1
+
+    for (( i=${_E_WIDTH}; i>=0; i-- ))
+    do
+        (( mask = flags & ( 1 << i ) ))
+        case $mask in
+            $_E_FLAG_FAILURE)
+                echo "Script failed."
+            ;;
+            $_E_FLAG_EXIT_STANDARD)
+                echo "Normal exit."
+            ;;
+            $_E_FLAG_EXIT_NONSTANDARD)
+                echo "Non-standard exit."
+            ;;
+            $_E_FLAG_EXIT_SIGNALED)
+                echo "Recievied signal."
+            ;;
+            $_E_FLAG_EXIT_PEBCAC)
+                echo "Problem exists between keyboard and chair."
+            ;;
+            $_E_FLAG_HALT_AND_CATCH_FIRE)
+                echo "A fatal error occurred."
+            ;;
+            $_E_FLAG_BAD_ARGUMENT)
+                echo "Bad argument."
+            ;;
+            $_E_FLAG_BAD_RETVAL)
+                echo "An external program exited abnormally."
+            ;;
+            $_E_FLAG_BAD_PACKAGE)
+                echo "A package failed to build."
+            ;;
+            $_E_FLAG_RES4)
+                echo "Reserved"
+            ;;
+            $_E_FLAG_RES5)
+                echo "Reserved"
+            ;;
+            $_E_FLAG_RES6)
+                echo "Reserved"
+            ;;
+            $_E_FLAG_RES7)
+                echo "Reserved"
+            ;;
+            $_E_FLAG_RES8)
+                echo "Reserved"
+            ;;
+            $_E_FLAG_RES9)
+                echo "Reserved"
+            ;;
+            $_E_FLAG_INTERNAL)
+                echo "Error handler experienced an internal error."
+            ;;
+            *)
+
+            ;;
+        esac
+    done
+}
+
+function error_report
+{
+    local flags=`error_mask_string`
+    printf "Error count: %16s\n" $_E_COUNT
+    printf "Error mask:  %16s\n" $_E_FLAGS
+    printf "Error flags: %16s\n" $flags
+    echo "Error message(s):"
+    while read line
+    do
+        echo "* $line"
+    done< <(error_mask_report $_E_FLAGS)
+}
+
+function error_set
+{
+    local flag=$1
+    if [[ -z $flag ]]; then
+        echo "error.sh: Unable to set error flag: '$flag'"
+        flag=$_E_FLAG_INTERNAL
+    fi
+    (( _E_FLAGS |= $flag ))
+    (( _E_COUNT++ ))
+    #echo "Error flag modified: $_E_FLAGS_STR"
+}
+
+function error_mask_string
+{
+    declare -a -i bits
+    local flags=$_E_FLAGS
+    local output=""
+
+    for i in $(seq 0 $_E_WIDTH)
+    do
+        (( bits[i] = 0 ))
+        (( bit = flags >> i ))
+        if (( flags & ( 1 << i ) )); then
+            (( bits[i] = 1 ))
+        fi
+    done
+    
+    for (( x=${_E_WIDTH}; x>=0; x-- ))
+    do
+        output+=$(( bits[x] ))
+    done
+
+    echo $output
+}
+