working on pvget (missing files)

2012-10-10 15:14:32 +02:00
parent 92d4a64391
commit 2db0594709
2 changed files with 272 additions and 0 deletions
@@ -0,0 +1,218 @@
+#include "pvutils.h"
+
+#include <iostream>
+
+#include <string>
+#include <ostream>
+#include <sstream>
+#include <iomanip>
+#include <stdexcept>
+
+using namespace std;
+using namespace std::tr1;
+using namespace epics::pvData;
+using namespace epics::pvAccess;
+
+RequesterImpl::RequesterImpl(String const & requesterName) :
+		m_requesterName(requesterName)
+{
+}
+
+String RequesterImpl::getRequesterName()
+{
+	return "RequesterImpl";
+}
+
+void RequesterImpl::message(String const & message, MessageType messageType)
+{
+	std::cout << "[" << getRequesterName() << "] message(" << message << ", " << getMessageTypeName(messageType) << ")" << std::endl;
+}
+
+
+char separator = ' ';
+void terseSeparator(char c)
+{
+	separator = c;
+}
+
+std::ostream& terse(std::ostream& o, PVField::shared_pointer const & pv)
+{
+    Type type = pv->getField()->getType();
+    switch (type)
+    {
+    case scalar:
+    	o << *(pv.get());
+    	return o;
+    case structure:
+    	return terseStructure(o, static_pointer_cast<PVStructure>(pv));
+    	break;
+    case scalarArray:
+    	return terseScalarArray(o, static_pointer_cast<PVScalarArray>(pv));
+    	break;
+    case structureArray:
+    	return terseStructureArray(o, static_pointer_cast<PVStructureArray>(pv));
+    	break;
+    default:
+    	throw logic_error("unknown Field type: " + type);
+    }
+}
+
+std::ostream& terseStructure(std::ostream& o, PVStructure::shared_pointer const & pvStructure)
+{
+    PVFieldPtrArray fieldsData = pvStructure->getPVFields();
+	size_t length = pvStructure->getStructure()->getNumberFields();
+	bool first = true;
+	for (size_t i = 0; i < length; i++) {
+		if (first)
+			first = false;
+		else
+			o << separator;
+
+		terse(o, fieldsData[i]);
+	}
+	return o;
+}
+
+std::ostream& terseScalarArray(std::ostream& o, PVScalarArray::shared_pointer const & pvArray)
+{
+    size_t length = pvArray->getLength();
+    if (length<=0)
+    {
+    	o << '0';
+    	return o;
+    }
+    o << length << separator;
+
+    bool first = true;
+    for (size_t i = 0; i < length; i++) {
+		if (first)
+			first = false;
+		else
+			o << separator;
+
+		pvArray->dumpValue(o, i);
+    }
+    return o;
+
+    // avoid brackets
+    /*
+	o << *(pvArray.get());
+	return o;
+	*/
+}
+
+std::ostream& terseStructureArray(std::ostream& o, PVStructureArray::shared_pointer const & pvArray)
+{
+    size_t length = pvArray->getLength();
+    if (length<=0)
+    {
+    	o << '0';
+    	return o;
+    }
+    o << length << separator;
+
+    StructureArrayData data = StructureArrayData();
+    pvArray->get(0, length, data);
+    bool first = true;
+    for (size_t i = 0; i < length; i++) {
+		if (first)
+			first = false;
+		else
+			o << separator;
+
+		terseStructure(o, data.data[i]);
+    }
+    return o;
+}
+
+
+
+
+
+
+
+
+
+
+
+/* Converts a hex character to its integer value */
+char from_hex(char ch) {
+  return isdigit(ch) ? ch - '0' : tolower(ch) - 'a' + 10;
+}
+
+/* Converts an integer value to its hex character*/
+char to_hex(char code) {
+  static char hex[] = "0123456789abcdef";
+  return hex[code & 15];
+}
+
+/* Returns a url-encoded version of str */
+/* IMPORTANT: be sure to free() the returned string after use */
+char *url_encode(const char *str) {
+  const char *pstr = str;
+  char *buf = (char*)malloc(strlen(str) * 3 + 1), *pbuf = buf;
+  bool firstEquals = true;
+  while (*pstr) {
+    if (isalnum(*pstr) || *pstr == '-' || *pstr == '_' || *pstr == '.' || *pstr == '~') 
+      *pbuf++ = *pstr;
+    else if (*pstr == ' ') 
+      *pbuf++ = '+';
+    else if (*pstr == '=' && firstEquals)
+    { 
+      firstEquals = false;
+      *pbuf++ = '=';
+    }
+    else 
+      *pbuf++ = '%', *pbuf++ = to_hex(*pstr >> 4), *pbuf++ = to_hex(*pstr & 15);
+    pstr++;
+  }
+  *pbuf = '\0';
+  return buf;
+}
+
+
+
+String ChannelRequesterImpl::getRequesterName()
+{
+	return "ChannelRequesterImpl";
+};
+
+void ChannelRequesterImpl::message(String const & message, MessageType messageType)
+{
+	std::cerr << "[" << getRequesterName() << "] message(" << message << ", " << getMessageTypeName(messageType) << ")" << std::endl;
+}
+
+void ChannelRequesterImpl::channelCreated(const epics::pvData::Status& status, Channel::shared_pointer const & channel)
+{
+	if (status.isSuccess())
+	{
+		// show warning
+		if (!status.isOK())
+		{
+			std::cerr << "[" << channel->getChannelName() << "] channel create: " << status.toString() << std::endl;
+		}
+	}
+	else
+	{
+		std::cerr << "[" << channel->getChannelName() << "] failed to create a channel: " << status.toString() << std::endl;
+	}
+}
+
+void ChannelRequesterImpl::channelStateChange(Channel::shared_pointer const & /*channel*/, Channel::ConnectionState connectionState)
+{
+	if (connectionState == Channel::CONNECTED)
+	{
+		m_event.signal();
+	}
+	/*
+	else if (connectionState != Channel::DESTROYED)
+	{
+		std::cout << "[" << channel->getChannelName() << "] channel state change: "  << Channel::ConnectionStateNames[connectionState] << std::endl;
+	}
+	*/
+}
+    
+bool ChannelRequesterImpl::waitUntilConnected(double timeOut)
+{
+	return m_event.wait(timeOut);
+}
@@ -0,0 +1,54 @@
+#include <pv/event.h>
+#include <pv/pvData.h>
+#include <pv/pvAccess.h>
+
+/// terse mode functions
+void convertStructure(epics::pvData::StringBuilder buffer, epics::pvData::PVStructure *data, int notFirst);
+void convertArray(epics::pvData::StringBuilder buffer, epics::pvData::PVScalarArray * pv, int notFirst);
+void convertStructureArray(epics::pvData::StringBuilder buffer, epics::pvData::PVStructureArray * pvdata, int notFirst);
+
+void terseSeparator(char c);
+std::ostream& terse(std::ostream& o, epics::pvData::PVField::shared_pointer const & pv);
+std::ostream& terseStructure(std::ostream& o, epics::pvData::PVStructure::shared_pointer const & pvStructure);
+std::ostream& terseScalarArray(std::ostream& o, epics::pvData::PVScalarArray::shared_pointer const & pvArray);
+std::ostream& terseStructureArray(std::ostream& o, epics::pvData::PVStructureArray::shared_pointer const & pvArray);
+
+
+/* Converts a hex character to its integer value */
+char from_hex(char ch);
+
+/* Converts an integer value to its hex character*/
+char to_hex(char code);
+
+/* Returns a url-encoded version of str */
+/* IMPORTANT: be sure to free() the returned string after use */
+char *url_encode(const char *str);
+
+
+class RequesterImpl :
+	public epics::pvData::Requester
+{
+    public:
+	    RequesterImpl(epics::pvData::String const & requesterName);
+        virtual epics::pvData::String getRequesterName();
+        virtual void message(epics::pvData::String const & message, epics::pvData::MessageType messageType);
+
+    private:
+        epics::pvData::String m_requesterName;
+};
+
+class ChannelRequesterImpl :
+    public epics::pvAccess::ChannelRequester
+{
+    private:
+        epics::pvData::Event m_event;
+    
+    public:
+        virtual epics::pvData::String getRequesterName();
+        virtual void message(epics::pvData::String const & message, epics::pvData::MessageType messageType);
+    
+        virtual void channelCreated(const epics::pvData::Status& status, epics::pvAccess::Channel::shared_pointer const & channel);
+        virtual void channelStateChange(epics::pvAccess::Channel::shared_pointer const & channel, epics::pvAccess::Channel::ConnectionState connectionState);
+    
+        bool waitUntilConnected(double timeOut);
+};