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Add readAsBinaryString and readAsArrayBuffer support

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This commit is contained in:
Braden Shepherdson 2013-03-04 15:11:49 -05:00
parent fb81f3e77e
commit 7187f87eae
1 changed files with 34 additions and 7 deletions
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37
framework/src/org/apache/cordova/FileUtils.java
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@ -136,6 +136,19 @@ public class FileUtils extends CordovaPlugin {
String s = this.readAsDataURL(args.getString(0), start, end); String s = this.readAsDataURL(args.getString(0), start, end);
callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.OK, s)); callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.OK, s));
} }
else if (action.equals("readAsArrayBuffer")) {
int start = 0;
int end = Integer.MAX_VALUE;
if (args.length() >= 2) {
start = args.getInt(1);
}
if (args.length() >= 3) {
end = args.getInt(2);
}
byte[] s = this.readAsBinary(args.getString(0), start, end);
callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.OK, s));
}
else if (action.equals("write")) { else if (action.equals("write")) {
long fileSize = this.write(args.getString(0), args.getString(1), args.getInt(2)); long fileSize = this.write(args.getString(0), args.getString(1), args.getInt(2));
callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.OK, fileSize)); callbackContext.sendPluginResult(new PluginResult(PluginResult.Status.OK, fileSize));
@ -987,13 +1000,14 @@ public class FileUtils extends CordovaPlugin {
} }
/** /**
* Read content of text file and return as base64 encoded data url. * Helper method to read a text file and return its contents as a byte[].
*
* @param filename The name of the file. * @param filename The name of the file.
* @return Contents of file = data:<media type>;base64,<data> * @param start Start position in the file.
* @param end End position to stop at (exclusive).
* @return Contents of the file as a byte[].
* @throws FileNotFoundException, IOException * @throws FileNotFoundException, IOException
*/ */
public String readAsDataURL(String filename, int start, int end) throws FileNotFoundException, IOException { public byte[] readAsBinary(String filename, int start, int end) throws FileNotFoundException, IOException {
int diff = end - start; int diff = end - start;
byte[] bytes = new byte[1000]; byte[] bytes = new byte[1000];
BufferedInputStream bis = new BufferedInputStream(getPathFromUri(filename), 1024); BufferedInputStream bis = new BufferedInputStream(getPathFromUri(filename), 1024);
@ -1009,6 +1023,19 @@ public class FileUtils extends CordovaPlugin {
bos.write(bytes, 0, numRead); bos.write(bytes, 0, numRead);
} }
return bos.toByteArray();
}
/**
* Read content of a file and return as base64 encoded data url.
*
* @param filename The name of the file.
* @param start Start position in the file.
* @param end End position to stop at (exclusive).
* @return Contents of file = data:<media type>;base64,<data>
* @throws FileNotFoundException, IOException
*/
public String readAsDataURL(String filename, int start, int end) throws FileNotFoundException, IOException {
// Determine content type from file name // Determine content type from file name
String contentType = null; String contentType = null;
if (filename.startsWith("content:")) { if (filename.startsWith("content:")) {
@ -1019,7 +1046,7 @@ public class FileUtils extends CordovaPlugin {
contentType = getMimeType(filename); contentType = getMimeType(filename);
} }
byte[] base64 = Base64.encodeBase64(bos.toByteArray()); byte[] base64 = Base64.encodeBase64(readAsBinary(filename, start, end));
String data = "data:" + contentType + ";base64," + new String(base64); String data = "data:" + contentType + ";base64," + new String(base64);
return data; return data;
} }