Add pipeline to outline svg as png

2 files changed, 24 insertions, 1 deletions

diff --git a/lib/utils/fs.js b/lib/utils/fs.js
index 2fa6ff9..7745448 100644
--- a/lib/utils/fs.js
+++ b/lib/utils/fs.js
@@ -1,6 +1,7 @@
 var fs = require('graceful-fs');
 var mkdirp = require('mkdirp');
 var destroy = require('destroy');
+var tmp = require('tmp');
 
 var Promise = require('./promise');
 
@@ -52,6 +53,11 @@ function fileExists(filename) {
     return d.promise;
 }
 
+// Generate temporary file
+function genTmpFile(opts) {
+    return Promise.nfcall(tmp.file, opts)
+        .get(0);
+}
 
 module.exports = {
     exists: fileExists,
@@ -62,5 +68,6 @@ module.exports = {
     statSync: fs.statSync,
     readdir: Promise.nfbind(fs.readdir),
     writeStream: writeStream,
-    copy: copyFile
+    copy: copyFile,
+    tmpFile: genTmpFile
 };
diff --git a/lib/utils/images.js b/lib/utils/images.js
index 3ba0f1f..45bc0b0 100644
--- a/lib/utils/images.js
+++ b/lib/utils/images.js
@@ -2,6 +2,7 @@ var fs = require('fs');
 
 var Promise = require('./promise');
 var command = require('./command');
+var fs = require('./fs');
 var error = require('./error');
 
 // Convert a svg file to a pmg
@@ -21,7 +22,22 @@ function convertSVGToPNG(source, dest, options) {
     });
 }
 
+// Convert a svg buffer to a png file
+function convertSVGBufferToPNG(buf, dest) {
+    // Create a temporary SVG file to convert
+    return fs.tmpFile({
+        postfix: '.svg'
+    })
+    .then(function(tmpSvg) {
+        return fs.writeFile(tmpSvg, buf)
+        .then(function() {
+            return convertSVGToPNG(tmpSvg, dest);
+        });
+    });
+}
+
 module.exports = {
     convertSVGToPNG: convertSVGToPNG,
+    convertSVGBufferToPNG: convertSVGBufferToPNG,
     INVALID: ['.svg']
 };
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