Convert svg images to png in ebook

1 files changed, 20 insertions, 2 deletions

diff --git a/lib/utils/fs.js b/lib/utils/fs.js
index 8d8c189..e434953 100644
--- a/lib/utils/fs.js
+++ b/lib/utils/fs.js
@@ -43,9 +43,27 @@ var fsUtils = {
     },
     existsSync: fs.existsSync.bind(fs),
     readFileSync: fs.readFileSync.bind(fs),
-    clean: cleanFolder
+    clean: cleanFolder,
+    getUniqueFilename: getUniqueFilename
 }
 
+// Find a filename available
+function getUniqueFilename(base) {
+    var ext = path.extname(base);
+    base = path.join(path.dirname(base), path.basename(base, ext));
+
+    var filename = base+ext;
+
+    var i = 0;
+    while (1) {
+        if (!fs.existsSync(filename)) break;
+        filename = base+"_"+i+ext;
+        i = i + 1;
+    }
+
+    return filename;
+};
+
 
 // List files in a directory
 function listFiles(root, options) {
@@ -112,7 +130,7 @@ function cleanFolder(root) {
                 var _file = path.join(root, file);
 
                 d.notify({
-                    i: i,
+                    i: i+1,
                     count: files.length,
                     file: _file
                 });