command line interface with #import support

.gitignore

@@ -3,3 +3,4 @@ nomnoml.sublime-workspace
 node_modules/
 
 output.*
+nomnoml-0.1.0.tgz

dist/nomnoml-cli.js

@@ -0,0 +1,41 @@
+#! /usr/bin/env node
+var fs = require('fs')
+var nomnoml = require('./nomnoml.js')
+
+var args = process.argv
+
+if (args[2] == '--help' || args.length == 2){
+  console.log(`
+  Load source file and send rendered svg to stdout
+
+  nomnoml <source_file>
+
+  Load source file and save rendered svg to <output_file>
+  
+  nomnoml <source_file> <output_file>
+
+  Third parameter overrides the import depth limit
+  that protects us from recursive imports
+
+  nomnoml <source_file> <output_file> <max_import_chain_length>`)
+  return
+}
+
+var maxImportChainLength = args[4] || 10
+
+var svg = nomnoml.renderSvg(preprocessFile(args[2], 0))
+if (args[3]){
+  fs.writeFileSync(args[3], svg)
+}
+else {
+  console.log(svg)
+}
+
+function preprocessFile(filepath, depth){
+  if (depth > maxImportChainLength)
+    throw Error('max_import_chain_length exceeded')
+  var source = fs.readFileSync(filepath, {encoding:'utf8'})
+  return source.replace(/#import: *(.*)/g, function (a, file) {
+    return preprocessFile(file, depth+1)
+  })
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "nomnoml",
-  "version": "0.0.4",
+  "version": "0.1.0",
   "description": "The sassy UML renderer that generates diagrams from text",
   "homepage": "http://www.nomnoml.com",
   "author": "Daniel Kallin <daniel.kallin@gmail.com>",
@@ -9,7 +9,7 @@
     "uml"
   ],
   "main": "dist/nomnoml.js",
-  "files": ["dist/nomnoml.js"],
+  "files": ["dist/nomnoml.js", "dist/nomnoml-cli.js"],
   "dependencies": {
     "lodash": "~3.7.0",
     "dagre": "0.4.x"
@@ -30,5 +30,8 @@
   },
   "bugs": {
     "url": "https://github.com/skanaar/nomnoml/issues"
+  },
+  "bin": {
+    "nomnoml": "dist/nomnoml-cli.js"
   }
 }