go back to polling for windows, corrected windows console usage

svn path=/trunk/kdesupport/qca/; revision=645946

include/QtCrypto/qpipe.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2003-2006  Justin Karneges <justin@affinix.com>
+ * Copyright (C) 2003-2007  Justin Karneges <justin@affinix.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -36,6 +36,8 @@
 
 #ifdef QPIPE_SECURE
 # include <QtCrypto>
+#else
+# define QCA_EXPORT
 #endif
 
 // defs adapted qprocess_p.h
@@ -48,6 +50,10 @@ typedef int Q_PIPE_ID;
 #define INVALID_Q_PIPE_ID -1
 #endif
 
+// Note: for Windows console, I/O must be in UTF-8.  Reads are guaranteed to
+//   to completely decode (no partial characters).  Likewise, writes must
+//   not contain partial characters.
+
 namespace QCA {
 
 // unbuffered direct pipe
@@ -55,7 +61,12 @@ class QCA_EXPORT QPipeDevice : public QObject
 {
 	Q_OBJECT
 public:
-	enum Type { Read, Write };
+	enum Type
+	{
+		Read,
+		Write
+	};
+
 	QPipeDevice(QObject *parent = 0);
 	~QPipeDevice();
 
@@ -75,6 +86,7 @@ public:
 	int bytesAvailable() const;            // bytes available to read
 	int read(char *data, int maxsize);     // return number read, 0 = EOF, -1 = error
 	int write(const char *data, int size); // return number taken, ptr must stay valid. -1 on error
+	int writeResult(int *written) const;   // 0 = success (wrote all), -1 = error (see written)
 
 signals:
 	void notify();                         // can read or can write, depending on type
@@ -90,7 +102,12 @@ class QCA_EXPORT QPipeEnd : public QObject
 {
 	Q_OBJECT
 public:
-	enum Error { ErrorEOF, ErrorBroken };
+	enum Error
+	{
+		ErrorEOF,
+		ErrorBroken
+	};
+
 	QPipeEnd(QObject *parent = 0);
 	~QPipeEnd();