Merge pull request #223 from APIs-guru/master

Add option to specify max line width.

README.md

@@ -177,6 +177,7 @@ options:
 - `schema` _(default: `DEFAULT_SAFE_SCHEMA`)_ specifies a schema to use.
 - `sortKeys` _(default: `false`)_ - if `true`, sort keys when dumping YAML. If a
   function, use the function to sort the keys.
+- `lineWidth` _(default: `80`)_ - set max line width.
 
 styles:
 

lib/js-yaml/dumper.js

@@ -115,6 +115,7 @@ function State(options) {
   this.flowLevel   = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']);
   this.styleMap    = compileStyleMap(this.schema, options['styles'] || null);
   this.sortKeys    = options['sortKeys'] || false;
+  this.lineWidth    = options['lineWidth'] || 80;
 
   this.implicitTypes = this.schema.compiledImplicit;
   this.explicitTypes = this.schema.compiledExplicit;
@@ -256,7 +257,13 @@ function writeScalar(state, object, level, iskey) {
   longestLine = 0;
 
   indent = state.indent * level;
-  max = 80;
+  max = state.lineWidth;
+  if (max === -1) {
+    // Replace -1 with biggest ingeger number according to
+    // http://ecma262-5.com/ELS5_HTML.htm#Section_8.5
+    max = 9007199254740991;
+  }
+
   if (indent < 40) {
     max -= indent;
   } else {