Improve font helpers.

Log a warning on incorrect use.

src/cli/error.js

@@ -197,6 +197,9 @@ Error-handling routines for HackMyResume.
 
       case HMSTATUS.invalidHelperUse:
         msg = printf( M2C( this.msgs.invalidHelperUse.msg ), ex.helper );
+        if( ex.error ) {
+          msg += printf( '\n--> ' + M2C( this.msgs.invalidParamCount.msg ), ex.expected );
+        }
         quit = false;
         etype = 'warning';
         break;

src/cli/msg.yml

@@ -14,7 +14,7 @@ events:
       - Merging **%s**
       - " onto **%s**"
   applyTheme:
-    msg: Applying **%s** theme (%s format%s)
+    msg: Applying **%s** theme (**%s** format%s)
   afterBuild:
     msg:
       - "The **%s** theme says:"
@@ -81,7 +81,7 @@ errors:
   parseError:
     msg: Invalid or corrupt JSON on line %s column %s.
   invalidHelperUse:
-    msg: Warning: Invalid use of the **%s** theme helper.
+    msg: "**Warning**: Incorrect use of the **%s** theme helper."
   fileSaveError:
     msg: An error occurred while writing %s to disk: %s.
   mixedMerge:
@@ -92,3 +92,5 @@ errors:
     msg: "An error occurred during template compilation."
   themeLoad:
     msg: "Applying **%s** theme (? formats)"
+  invalidParamCount:
+    msg: "Invalid number of parameters. Expected: **%s**."

src/core/status-codes.js

@@ -29,7 +29,8 @@ Status codes for HackMyResume.
     mixedMerge: 19,
     invokeTemplate: 20,
     compileTemplate: 21,
-    themeLoad: 22
+    themeLoad: 22,
+    invalidParamCount: 23
   };
 
 }());

src/helpers/generic-helpers.js

@@ -79,15 +79,29 @@ Generic template helper definitions for HackMyResume / FluentCV.
     provided key.
     @param key {String} A named style from the "fonts" section of the theme's
     theme.json file. For example: 'default' or 'heading1'.
+    @param defFont {String} The font to use if the specified key isn't present.
+    Can be any valid font-face name such as 'Helvetica Neue' or 'Calibri'.
     */
-    fontFace: function( key ) {
-      if( key && key.trim() && GenericHelpers.theme.fonts ) {
-        var fontSpec = GenericHelpers.theme.fonts[ key ];
-        if( fontSpec )
-          return String.is( fontSpec ) ? fontSpec : fontSpec[0];
+    fontFace: function( key, defFont ) {
+
+      var ret = '';
+      if( arguments.length !== 3 ) { // key, defFont, and the HandleBars options
+        _reportError( HMSTATUS.invalidHelperUse, {
+          helper: 'fontFace', error: HMSTATUS.invalidParamCount, expected: 2
+        });
       }
+      else if( !GenericHelpers.theme.fonts ) {
+        ret = defFont;
+      }
+      else {
+        var fontSpec = GenericHelpers.theme.fonts[ key ];
+        if( !fontSpec )
           _reportError( HMSTATUS.invalidHelperUse, { helper: 'fontFace' } );
-      return '';
+        else
+          ret = String.is( fontSpec ) ? fontSpec : fontSpec[0];
+      }
+
+      return ret;
     },
 
     /**
@@ -95,19 +109,35 @@ Generic template helper definitions for HackMyResume / FluentCV.
     provided key.
     @param key {String} A named style from the "fonts" section of the theme's
     theme.json file. For example: 'default' or 'heading1'.
+    @param defFont {String} The font to use if the specified key isn't present.
+    Can be any valid font-face name such as 'Helvetica Neue' or 'Calibri'.
     */
-    fontList: function( key ) {
+    fontList: function( key, defFontList, sep ) {
       var ret = '';
+      if( !_.contains( [3,4], arguments.length ) ) {
+        _reportError( HMSTATUS.invalidHelperUse, {
+          helper: 'fontList', error: HMSTATUS.invalidParamCount, expected: [2,3]
+        });
+      }
+      else if( !GenericHelpers.theme.fonts ) {
+        ret = defFontList;
+      }
+      else {
         var fontSpec = GenericHelpers.theme.fonts[ key ];
-      if( _.isArray( fontSpec ) ) {
+        if( !fontSpec ) {
+          _reportError( HMSTATUS.invalidHelperUse, { helper: 'fontFace' } );
+        }
+        else if( _.isArray( fontSpec ) ) {
           fontSpec = fontSpec.map( function(ff) {
             return "'" + ff + "'";
           });
-        ret = fontSpec.join(', ');
+          ret = fontSpec.join( sep === undefined ? ', ' : (sep || '') );
         }
         else if( _.isString( fontSpec )) {
           ret = fontSpec;
         }
+      }
+
       return ret;
     },