feat: Allow passing options to nomnoml-cli

.gitignore

@@ -3,3 +3,4 @@ coverage
 node_modules
 npm-debug.log
 test/piracy.png
+test/piracy.svg

Gruntfile.js

@@ -15,10 +15,18 @@ module.exports = function (grunt) {
     },
 
     nomnoml: {
-      task: {
+      png: {
         files: {
           'test/piracy.png': ['test/piracy.nomnoml']
         }
+      },
+      svg: {
+        options: {
+          format: 'svg'
+        },
+        files: {
+          'test/piracy.svg': ['test/piracy.nomnoml']
+        }
       }
     },
 

README.md

@@ -52,16 +52,22 @@ grunt.initConfig({
       }
     },
     all: {
+      options: { format: 'svg' },
       src: ['doc/images/*.nomnoml']
       dest: 'dist/doc/images'
     }
   }
 });
 ```
+
 The configuration consists of key-value pairs with the output image path
 as a key pointing to the nomnoml input file.  If you specify more source
 files by wildcards, the destination should be a directory; the source file
-extension wil lbe replaced by "png" in the output file name.
+extension will be replaced by "png" or other one depending on the format
+in the output file name.
+
+The `options` can contain one or more options supported by the [nomnoml-cli API].
+For example, `format` can be `png` (default), `jpg`, `svg` or `pdf`.
 
 Then, load the plugin:
 
@@ -103,3 +109,4 @@ Licensed under the MIT license.
 [Getting Gtarted]: https://github.com/gruntjs/grunt/wiki/Getting-started
 [nomnoml]: http://www.nomnoml.com/
 [nomnoml-cli]: https://github.com/prantlf/nomnoml-cli
+[nomnoml-cli API]: https://github.com/prantlf/nomnoml-cli#programmatic-usage

tasks/nomnoml.js

@@ -12,39 +12,43 @@ const generateDiagram = require('nomnoml-cli');
 const { join, parse, dirname } = require('path');
 
 module.exports = function (grunt) {
-  function processDiagram(fileSrc, fileDest) {
+  function processDiagram(fileSrc, fileDest, options) {
     try {
       grunt.log.subhead('Processing diagram "' + fileSrc + '"');
-      return generateDiagram({
+      return generateDiagram(Object.assign({
         inputFile: fileSrc,
         output: fileDest
-      });
+      }, options));
     } catch (error) {
       grunt.log.error(error);
       grunt.fail.warn('Processing diagram "' + fileSrc + '" failed\n');
     }
   }
 
   grunt.registerMultiTask('nomnoml', "Generate images from nomnoml diagram sources", function () {
-    var done = this.async(),
-        promises = this.files.map(function (file) {
-          // If multiple source files are specified, the destination
-          // path should point to a directory
-          var single = file.orig.src.length === 1 &&
-                !file.orig.src.some(function (src) {
-                  return src.indexOf('*') >= 0 || src.indexOf('?') >= 0;
-                }),
-              promises = file.src.map(function (src) {
-                // If the destination is a directory, use the source file name
-                // with the '.png' extension
-                const dest = single ? file.dest : join(file.dest, parse(src).name + '.png');
-                const dir = dirname(dest);
-                grunt.file.mkdir(dir);
-                return processDiagram(src, dest);
-              });
-          return Promise.all(promises);
+    const done = this.async();
+    const options = this.options({});
+    let { format = 'png' } = options;
+    format = format.toLowerCase();
+    const promises = this.files.map(function (file) {
+      // If multiple source files are specified, the destination
+      // path should point to a directory
+      const single = file.orig.src.length === 1 &&
+        !file.orig.src.some(function (src) {
+          return src.indexOf('*') >= 0 || src.indexOf('?') >= 0;
         });
-    Promise.all(promises)
-     .then(done);
+      const promises = file.src.map(function (src) {
+        // If the destination is a directory, use the source file name
+        // with the '.png' or format-dependent extension
+        const dest = single ? file.dest : join(file.dest, parse(src).name + '.' + format);
+        const dir = dirname(dest);
+        grunt.file.mkdir(dir);
+        return processDiagram(src, dest, options);
+      });
+      return Promise.all(promises);
+    });
+    Promise
+      .all(promises)
+      .then(done);
   });
 };

test/nomnoml_test.js

@@ -4,9 +4,14 @@ const { statSync } = require('fs');
 const { join } = require('path');
 
 exports.nomnoml = {
-  task: function (test) {
-    var output = statSync(join(__dirname, 'piracy.png'));
+  png: function (test) {
+    const output = statSync(join(__dirname, 'piracy.png'));
     test.ok(output.isFile() && output.size > 0, 'creates a PNG file');
     test.done();
+  },
+  svg: function (test) {
+    const output = statSync(join(__dirname, 'piracy.svg'));
+    test.ok(output.isFile() && output.size > 0, 'creates a SVG file');
+    test.done();
   }
 };