Moved source into separate src directory due to popular request

[GpsPrune.git] / src / tim / prune / function / gpsies / FormPoster.java

diff --git a/src/tim/prune/function/gpsies/FormPoster.java b/src/tim/prune/function/gpsies/FormPoster.java
new file mode 100644 (file)
index 0000000..5939e63
--- /dev/null
+++ b/src/tim/prune/function/gpsies/FormPoster.java
@@ -0,0 +1,162 @@
+package tim.prune.function.gpsies;\r
+\r
+import java.net.HttpURLConnection;\r
+import java.net.URLConnection;\r
+import java.net.URL;\r
+import java.io.IOException;\r
+import java.io.InputStream;\r
+import java.util.Random;\r
+import java.io.OutputStream;\r
+\r
+/**\r
+ * Taken from the Client HTTP Request class at com.myjavatools.web\r
+ * and subsequently simplified and modified\r
+ * @author Vlad Patryshev\r
+ */\r
+public class FormPoster\r
+{\r
+       private URLConnection _connection = null;\r
+       private OutputStream _os = null;\r
+       private static final Random RANDOM_GEN = new Random();\r
+       private static final String BOUNDARY = "---------------------------"\r
+               + randomString() + randomString() + randomString();\r
+\r
+\r
+       /** Connect (if not already connected) */\r
+       protected void connect() throws IOException {\r
+               if (_os == null) _os = _connection.getOutputStream();\r
+       }\r
+\r
+       /** Write a single character */\r
+       protected void write(char c) throws IOException {\r
+               connect();\r
+               _os.write(c);\r
+       }\r
+\r
+       /** Write a string */\r
+       protected void write(String s) throws IOException {\r
+               connect();\r
+               _os.write(s.getBytes());\r
+       }\r
+\r
+       /** Write a -r-n newline sequence */\r
+       protected void newline() throws IOException {\r
+               write("\r\n");\r
+       }\r
+\r
+       /** Write a string followed by a newline */\r
+       protected void writeln(String s) throws IOException {\r
+               write(s);\r
+               newline();\r
+       }\r
+\r
+       /** Generate a random alphanumeric string */\r
+       private static String randomString() {\r
+               return Long.toString(RANDOM_GEN.nextLong(), 36);\r
+       }\r
+\r
+       /** Write a boundary marker */\r
+       private void boundary() throws IOException {\r
+               write("--");\r
+               write(BOUNDARY);\r
+       }\r
+\r
+\r
+       /**\r
+        * Creates a new multipart POST HTTP request for a specified URL\r
+        * @param url the URL to send request to\r
+        * @throws IOException\r
+        */\r
+       public FormPoster(URL inUrl) throws IOException\r
+       {\r
+               _connection = inUrl.openConnection();\r
+               _connection.setDoOutput(true);\r
+               _connection.setRequestProperty("Content-Type",\r
+                       "multipart/form-data; boundary=" + BOUNDARY);\r
+       }\r
+\r
+       /** Write a header with the given name */\r
+       private void writeName(String inName) throws IOException\r
+       {\r
+               newline();\r
+               write("Content-Disposition: form-data; name=\"");\r
+               write(inName);\r
+               write('"');\r
+       }\r
+\r
+       /**\r
+        * adds a string parameter to the request\r
+        * @param name parameter name\r
+        * @param value parameter value\r
+        * @throws IOException\r
+        */\r
+       public void setParameter(String inName, String inValue) throws IOException\r
+       {\r
+               boundary();\r
+               writeName(inName);\r
+               newline(); newline();\r
+               writeln(inValue);\r
+       }\r
+\r
+       /** Pipe the contents of the input stream to the output stream */\r
+       private static void pipe(InputStream in, OutputStream out) throws IOException\r
+       {\r
+               byte[] buf = new byte[500000];\r
+               int nread;\r
+               synchronized (in) {\r
+                       while((nread = in.read(buf, 0, buf.length)) >= 0) {\r
+                               out.write(buf, 0, nread);\r
+                       }\r
+               }\r
+               out.flush();\r
+               buf = null;\r
+       }\r
+\r
+       /**\r
+        * adds a file parameter to the request\r
+        * @param inName parameter name\r
+        * @param inFilename the name of the file\r
+        * @param inStream input stream to read the contents of the file from\r
+        * @throws IOException\r
+        */\r
+       public void setParameter(String inName, String inFilename, InputStream inStream) throws IOException\r
+       {\r
+               boundary();\r
+               writeName(inName);\r
+               write("; filename=\"");\r
+               write(inFilename);\r
+               write('"');\r
+               newline();\r
+               write("Content-Type: ");\r
+               String type = URLConnection.guessContentTypeFromName(inFilename);\r
+               if (type == null) {type = "application/octet-stream";}\r
+               writeln(type);\r
+               newline();\r
+               pipe(inStream, _os);\r
+               newline();\r
+       }\r
+\r
+       /**\r
+        * posts the requests to the server\r
+        * @return input stream with the server response\r
+        * @throws IOException\r
+        */\r
+       public InputStream post() throws IOException\r
+       {\r
+               boundary();\r
+               writeln("--");\r
+               _os.close();\r
+               return _connection.getInputStream();\r
+       }\r
+\r
+       /**\r
+        * @return the HTTP response code, 200 for success or -1 if not available\r
+        */\r
+       public int getResponseCode() throws IOException\r
+       {\r
+               if (_connection != null && _connection instanceof HttpURLConnection) {\r
+                       return ((HttpURLConnection) _connection).getResponseCode();\r
+               }\r
+               return -1;\r
+       }\r
+}\r