From b0570036716c1a46c7dfc19526666bd5675e666d Mon Sep 17 00:00:00 2001
From: Mark Woolrich <woolrich@fmrib.ox.ac.uk>
Date: Fri, 9 Aug 2002 13:51:16 +0000
Subject: [PATCH] Initial revision
---
log.cc | 91 ++++++++++++++++++++++++++
log.h | 198 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 289 insertions(+)
create mode 100644 log.cc
create mode 100644 log.h
diff --git a/log.cc b/log.cc
new file mode 100644
index 0000000..40ce561
--- /dev/null
+++ b/log.cc
@@ -0,0 +1,91 @@
+/* log.cc
+
+ Mark Woolrich, FMRIB Image Analysis Group
+
+ Copyright (C) 1999-2000 University of Oxford */
+
+/* CCOPYRIGHT */
+
+#include "log.h"
+
+namespace Utilities {
+
+ Logger* LogSingleton::logger = NULL;
+ int LogSingleton::count = 0;
+
+ void Logger::makeDir(const string& pdirname, const string& plogfilename, bool pstream_to_logfile, bool pstream_to_cout)
+ {
+ if(logEstablished)
+ {
+ logfileout.close();
+ }
+
+ dir = pdirname;
+ logfilename = plogfilename;
+ stream_to_logfile = pstream_to_logfile;
+ stream_to_cout = pstream_to_cout;
+
+ // make directory to place results into:
+ // keep adding "+" until directory is made:
+ int count = 0;
+ while(true)
+ {
+ if(count >= 20)
+ {
+ string s("Cannot create directory " + dir);
+ throw Exception(s.c_str());
+ }
+
+ int ret = system(("mkdir "+ dir + " 2>/dev/null").c_str());
+ if(ret == 0)
+ {
+ break;
+ }
+ dir = dir + "+";
+ count++;
+ }
+
+ // setup logfile
+ if(stream_to_logfile)
+ {
+ logfileout.open((dir + "/" + logfilename).c_str(), ios::out);
+ if(logfileout.bad())
+ {
+ throw Exception(string(string("Unable to setup logfile ")+logfilename+string(" in directory ")+dir).c_str());
+ }
+ }
+
+ logEstablished = true;
+ }
+
+ void Logger::setDir(const string& pdirname, const string& plogfilename, bool pstream_to_logfile, bool pstream_to_cout)
+ {
+ if(logEstablished)
+ {
+ logfileout.close();
+ }
+
+ dir = pdirname;
+ logfilename = plogfilename;
+ stream_to_logfile = pstream_to_logfile;
+ stream_to_cout = pstream_to_cout;
+
+ // setup logfile
+ if(stream_to_logfile)
+ {
+ logfileout.open((dir + "/" + logfilename).c_str(), ios::out);
+ if(logfileout.bad())
+ {
+ throw Exception(string(string("Unable to setup logfile ")+logfilename+string(" in directory ")+dir).c_str());
+ }
+ }
+
+ logEstablished = true;
+ }
+}
+
+
+
+
+
+
diff --git a/log.h b/log.h
new file mode 100644
index 0000000..6661af7
--- /dev/null
+++ b/log.h
@@ -0,0 +1,198 @@
+/* log.h
+
+ Mark Woolrich, FMRIB Image Analysis Group
+
+ Copyright (C) 1999-2000 University of Oxford */
+
+/* CCOPYRIGHT */
+
+#if !defined(log_h)
+#define log_h
+
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <strstream>
+#include "newmatap.h"
+#include "newmatio.h"
+
+// for the Exception class:
+using namespace NEWMAT;
+
+namespace Utilities{
+
+ template<class t> string tostring(const t obj)
+ {
+ char strc[100];
+ ostrstream str(strc,100);
+ str << obj << '\0';
+ return string(strc);
+ }
+
+ class Logger;
+
+ template<class t> Logger& operator<<(Logger& log, const t& obj)
+ {
+ if(log.stream_to_logfile)
+ log.logfileout << obj;
+
+ if(log.stream_to_cout)
+ cout << obj;
+
+ return log;
+ }
+
+ class Logger
+ {
+ public:
+ Logger():logEstablished(false) {}
+
+ Logger(const string& pdirname, const string& plogfilename = "logfile", bool pstream_to_logfile = true, bool pstream_to_cout = false, bool makedir = true):logEstablished(false)
+ {
+ if(makedir)
+ makeDir(pdirname, plogfilename, pstream_to_logfile, pstream_to_cout);
+ else
+ setDir(pdirname, plogfilename, pstream_to_logfile, pstream_to_cout);
+ }
+
+ ~Logger() { logfileout.close(); }
+
+ /** Need to call makeDir or setDir before Logger can be used */
+
+ /** Makes a directory to place results into:
+ keeps adding "+" to pdirname until unique directory is made. */
+ /** The stream_to* variables define the streaming behaviour */
+ void makeDir(const string& pdirname, const string& plogfilename = "logfile", bool pstream_to_logfile = true, bool pstream_to_cout = false);
+
+ /** Sets an existing directory to place results into. */
+ /** The stream_to* variables define the streaming behaviour */
+ void setDir(const string& pdirname, const string& plogfilename = "logfile", bool pstream_to_logfile = true, bool pstream_to_cout = false);
+
+ /** Closes old logfile buffer and attempts to open new one with name specified and sets streaming to logfile on */
+ void setLogFile(const string& plogfilename);
+
+ const string& getDir() const { if(!logEstablished)throw Exception("Log not setup");return dir; }
+
+ const string& getLogFileName() const { if(!logEstablished)throw Exception("Log not setup");return logfilename; }
+
+ /** returns passed in filename appended onto the end of the dir name */
+ const string appendDir(const string& filename) const;
+
+ /** allows streaming into cout and/or logfile depending upon the */
+ /** stream_to_cout and stream_to_logfile respectively */
+ /** use like a normal ostream, e.g. log.str() << "hello" << endl */
+ /** NOTE: can simply stream straight to Log instead, e.g. log << "hello" << endl */
+ Logger& str();
+
+ /** sets whether or not you stream to cout */
+ void set_stream_to_cout(bool in = true) { stream_to_cout = in; }
+
+ /** sets whether or not you stream to logfile */
+ void set_stream_to_logfile(bool in = true) {
+ if(!stream_to_logfile && in)
+ {
+ if(logfileout.bad())
+ {
+ cerr << "Warning: Unable to stream to logfile " << logfilename << ". Need to have called log.setLogFile. Therefore, no streaming to logfile will be performed" << endl;
+ }
+ }
+ else stream_to_logfile = in;
+ }
+
+ private:
+
+ const Logger& operator=(Logger&);
+ Logger(Logger&);
+
+ string dir;
+ ofstream logfileout;
+ string logfilename;
+
+ bool logEstablished;
+
+ bool stream_to_logfile;
+ bool stream_to_cout;
+
+ template<class t>
+ friend Logger& operator<<(Logger& log, const t& obj);
+ };
+
+ class LogSingleton
+ {
+ public:
+
+ static Logger& getInstance();
+
+ ~LogSingleton() { delete logger; }
+
+ /** hacked in utility provides a global counter for general use: */
+ static int counter() { return count++; }
+
+ private:
+ LogSingleton() {}
+
+ const LogSingleton& operator=(LogSingleton&);
+ LogSingleton(LogSingleton&);
+
+ static Logger* logger;
+
+ static int count;
+
+ };
+
+ typedef LogSingleton Log;
+
+ inline Logger& LogSingleton::getInstance(){
+ if(logger == NULL)
+ logger = new Logger();
+
+ return *logger;
+ }
+
+ inline void Logger::setLogFile(const string& plogfilename) {
+
+ if(!logEstablished)
+ {
+ throw Exception("Log not setup");
+ }
+
+ logfileout.close();
+
+ logfilename = plogfilename;
+
+ // setup logfile
+ logfileout.open((dir + "/" + logfilename).c_str(), ios::out);
+ if(logfileout.bad())
+ {
+ throw Exception(string(string("Unable to setup logfile ")+logfilename+string(" in directory ")+dir).c_str());
+ }
+
+ stream_to_logfile = true;
+
+ logEstablished = true;
+ }
+
+ inline Logger& Logger::str() {
+
+ if(!logEstablished)
+ {
+ throw Exception("Log not setup");
+ }
+
+ return *this;
+ }
+
+ inline const string Logger::appendDir(const string& filename) const {
+
+ if(!logEstablished)
+ {
+ throw Exception("Log not setup");
+ }
+
+ return dir + "/" + filename;
+ }
+
+}
+
+#endif
+
--
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