Allow multiple pdf files to be converted

README.md

@@ -2,6 +2,11 @@
 
 A nodejs module for converting pdf into image file
 
+## Dependencies
+- GraphicsMagick
+
+Note: Windows users, please be sure GraphicsMagick and Ghostscript are installed (see https://stackoverflow.com/questions/18733695/cimg-error-gm-exe-is-not-recognized-as-an-internal-or-external-command/45783910#45783910 for details) - then it works fine on Windows.
+
 ## Installation
 ```
   $ [sudo] npm install pdf2img
@@ -21,7 +26,8 @@ pdf2img.setOptions({
   size: 1024,                                 // default 1024
   density: 600,                               // default 600
   outputdir: __dirname + path.sep + 'output', // output folder, default null (if null given, then it will create folder name same as file name)
-  outputname: 'test'                          // output file name, dafault null (if null given, then it will create image name same as input name)
+  outputname: 'test',                         // output file name, dafault null (if null given, then it will create image name same as input name)
+  page: null                                  // convert selected page, default null (if null given, then it will convert all pages)
 });
 
 pdf2img.convert(input, function(err, info) {
@@ -49,11 +55,6 @@ It will return array of splitted and converted image files.
        path: '/output/test_3.jpg' } ] }
 ```
 
-Note that pdf2img will split and convert all pages.
-
-## To Do
-* Convert selected pages
-
 ## Maintainer
 [Fitra Aditya][0]
 

lib/pdf2img.js

@@ -16,11 +16,11 @@ var options = {
 var Pdf2Img = function() {};
 
 Pdf2Img.prototype.setOptions = function(opts) {
-  options.type = opts.type || options.type;
-  options.size = opts.size || options.size;
-  options.density = opts.density || options.density;
-  options.outputdir = opts.outputdir || options.outputdir;
-  options.outputname = opts.outputname || options.outputname;
+  options.type = opts.type != null || opts.type != 'undefined' ? opts.type : options.type;
+  options.size = opts.size != null || opts.size != 'undefined' ? opts.size : options.size;
+  options.density = opts.density != null || opts.density != 'undefined' ? opts.density : options.density;
+  options.outputdir = opts.outputdir != null || opts.outputdir != 'undefined' ? opts.outputdir : options.outputdir;
+  options.outputname = opts.outputname != null || opts.outputname != 'undefined' ? opts.outputname : options.outputname;
 };
 
 Pdf2Img.prototype.convert = function(input, callbackreturn) {
@@ -166,4 +166,31 @@ var isFileExists = function(path) {
   }
 }
 
+
+// Convert list of pdf files, 1st argument is array of pdf files, 2nd argument need to pass opts object to set options variable
+Pdf2Img.prototype.convertList = function(arr, opts, callbackreturn) {
+  async.eachSeries(arr, function(file, callback) {
+    Pdf2Img.prototype.setOptions(opts);
+    Pdf2Img.prototype.convert(file, function(err, info) {
+      if(err) {
+        return callback({
+          error: 'Unable to convert file ' + file,
+          message: err
+        }, null);
+      } else {
+        callback(null, info);
+      }
+    });
+  }, function(err) {
+      if(err) {
+        return callbackreturn({
+          error: 'Unable to convert everything on array',
+          message: err,
+        }, null);
+      } else {
+        callbackreturn(null, 'All files have been converted');
+      }
+    });
+};
+
 module.exports = new Pdf2Img;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "pdf2img",
-  "version": "0.2.0",
+  "version": "0.5.0",
   "description": "A nodejs module for converting pdf into image",
   "author": "Fitra Aditya <[email protected]>",
   "license": "MIT",

test/index.js

@@ -51,6 +51,40 @@ describe('Split and convert pdf into images', function() {
       }
     });
   });
+  it ('Create jpg file only for given page', function(done) {
+    this.timeout(100000);
+    pdf2img.setOptions({ type: 'jpg', page: 1 });
+    pdf2img.convert(input, function(err, info) {
+      if (info.result !== 'success') {
+        info.result.should.equal('success');
+        done();
+      } else {
+        info.message.length.should.equal(1)
+        var file = info.message[0];
+        file.page.should.equal(1);
+        file.name.should.equal('test_1.jpg');
+        isFileExists(file.path).should.to.be.true;
+        done();
+      }
+    });
+  });
+  it ('Create png file only for given page', function(done) {
+    this.timeout(100000);
+    pdf2img.setOptions({ type: 'png', page: 2 });
+    pdf2img.convert(input, function(err, info) {
+      if (info.result !== 'success') {
+        info.result.should.equal('success');
+        done();
+      } else {
+        info.message.length.should.equal(1)
+        var file = info.message[0];
+        file.page.should.equal(2);
+        file.name.should.equal('test_2.png');
+        isFileExists(file.path).should.to.be.true;
+        done();
+      }
+    });
+  });
 });
 
 var isFileExists = function(path) {