add proper logging function

linac.build

@@ -3,7 +3,9 @@ ReadConfiguration
 CreateFiles
 InitCheck
 Clean
-DebugPrint
+Log
+LogTerm
+LogFile
 ProcessBuildFile
 BuildProject
 InitProject

src/BuildProject

@@ -14,18 +14,18 @@ BuildProject() {
   arg="${arg#?}"
   case "$arg" in
     d )
-      DebugPrint "Debug build enabled."
-      DebugPrint "Args are $*"
-      DebugPrint "Arg is $arg"
+      Log debug "Debug build enabled."
+      Log debug "Args are $*"
+      Log debug "Arg is $arg"
       for ((i=0;i<"${#files[*]}";i++));do
         find "${files[$i]}" -type f -print0 | xargs -0 cat;
       done >> "${config[build_path]}""$name"
       ;;   
 
     * )
-      DebugPrint "Stripped build enabled."
-      DebugPrint "Args are $*"
-      DebugPrint "Arg is $arg"
+      Log debug "Stripped build enabled."
+      Log debug "Args are $*"
+      Log debug "Arg is $arg"
       for ((i=0;i<"${#files[*]}";i++));do
         grep -Ehrv '^\s*\#' "${files[$i]}";
       done >> "${config[build_path]}""$name"

src/Configure

@@ -3,9 +3,12 @@ Configure() {
   config=(
     [config_path]="config"
     [config_file]="linac.conf"
+    [verbosity]="error"
+    [log_level]="info"
+    [log_path]="/tmp"
+    [log_file]="linac.log"
     [src_path]="src/"
     [build_path]="build/"
     [debug_enabled]="false"
   )
-#  echo ${config[build_path]}
 }

src/Log

@@ -0,0 +1,4 @@
+Log() {
+  LogTerm "$1" "$2"
+  LogFile "$1" "$2"
+}

src/LogFile

@@ -0,0 +1,19 @@
+LogFile() {
+  local file_log_type="${1^^}"
+  local file_log_message="$2"
+
+  local log_level="${config[log_level]^^}"
+
+  DoLogFile() {
+    echo "[$(date '+%d/%b/%Y:%H:%M:%S.%3N')] ${file_log_type} - ${FUNCNAME[3]}: $file_log_message" >> "${config[log_path]}/${config[log_file]}"
+  }
+
+  case $file_log_type in
+    DEBUG  ) if [[ "$log_level" = @(DEBUG) ]]; then DoLogFile; fi;;
+    INFO   ) if [[ "$log_level" = @(DEBUG|INFO) ]]; then DoLogFile; fi;;
+    WARN   ) if [[ "$log_level" = @(DEBUG|INFO|WARN) ]]; then DoLogFile; fi;;
+    ERROR  ) if [[ "$log_level" = @(DEBUG|INFO|WARN|ERROR) ]]; then DoLogFile; fi;;
+    CONFIG ) if [[ "$log_level" != @(NONE) ]]; then DoLogFile; fi;;
+    *      ) if [[ "$log_level" = @(DEBUG) ]]; then DoLogFile; Log debug "Invalid file log type '$file_log_type' in context '${FUNCNAME[2]}'"; fi;;
+  esac
+}

src/LogTerm

@@ -0,0 +1,19 @@
+LogTerm() {
+  local term_log_type="${1^^}"
+  local term_log_message="$2"
+
+  local verbosity="${config[verbosity]^^}"
+
+  DoLogTerm() {
+    echo "$term_log_type - $term_log_message"
+  }
+
+  case $term_log_type in
+    DEBUG  ) if [[ "$verbosity" = @(DEBUG) ]]; then DoLogTerm; fi;;
+    INFO   ) if [[ "$verbosity" = @(DEBUG|INFO) ]]; then DoLogTerm; fi;;
+    WARN   ) if [[ "$verbosity" = @(DEBUG|INFO|WARN) ]]; then DoLogTerm; fi;;
+    ERROR  ) if [[ "$verbosity" = @(DEBUG|INFO|WARN|ERROR) ]]; then DoLogTerm; fi;;
+    CONFIG ) if [[ "$verbosity" = @(DEBUG|INFO) ]]; then DoLogTerm; fi;;
+    *      ) if [[ "$verbosity" = @(DEBUG) ]]; then DoLogTerm; Log debug "Invalid term log type '$term_log_type' in context '${FUNCNAME[2]}'"; fi;;
+  esac
+}

src/Main

@@ -1,6 +1,8 @@
 Main() {
+  PrintInfo
+  Configure
+  ReadConfiguration
   SubCommand "$@"
 }
 
-PrintInfo
 Main "$@"

src/SubCommand

@@ -18,12 +18,10 @@ SubCommand() {
        fi
       ;;
     * )
-      Configure
-      ReadConfiguration
-      DebugPrint "Args are $*"
+      Log debug "Args are $*"
       shift
-      DebugPrint "Shifted args"
-      DebugPrint "Args are $*"
+      Log debug "Shifted args"
+      Log debug "Args are $*"
       if ! command -v Sub"${subcommand^}" > /dev/null; then
         echo "Error: '$subcommand' is not a known command."
         echo "       Run 'linac help' for a list of known commands."