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290 lines
14 KiB
C
290 lines
14 KiB
C
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// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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// % Project : GUSI - Grand Unified Socket Interface
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// % File : GUSIConfig.nw - Configuration settings
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// % Author : Matthias Neeracher
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// % Language : C++
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// %
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// % $Log: GUSIConfig.h,v $
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// % Revision 1.1 2001/03/11 22:33:34 sgehani%netscape.com
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// % First Checked In.
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// %
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// % Revision 1.18 2001/01/22 04:31:11 neeri
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// % Last minute changes for 2.1.5
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// %
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// % Revision 1.17 2001/01/17 08:40:17 neeri
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// % Prevent inlining of overridable functions
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// %
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// % Revision 1.16 2000/05/23 06:54:39 neeri
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// % Improve formatting, update to latest universal headers
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// %
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// % Revision 1.15 2000/03/15 07:10:29 neeri
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// % Fix suffix searching code
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// %
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// % Revision 1.14 2000/03/06 06:24:34 neeri
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// % Fix plausibility tests for A5
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// %
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// % Revision 1.13 1999/09/26 03:56:44 neeri
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// % Sanity check for A5
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// %
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// % Revision 1.12 1999/08/26 05:44:59 neeri
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// % Fixes for literate edition of source code
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// %
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// % Revision 1.11 1999/06/28 05:57:03 neeri
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// % Support SIGINT generation
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// %
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// % Revision 1.10 1999/05/29 06:26:41 neeri
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// % Fixed header guards
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// %
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// % Revision 1.9 1999/03/29 09:51:28 neeri
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// % New configuration system with support for hardcoded configurations.
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// %
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// % Revision 1.8 1999/03/17 09:05:05 neeri
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// % Added GUSITimer, expanded docs
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// %
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// % Revision 1.7 1998/10/11 16:45:10 neeri
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// % Ready to release 2.0a2
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// %
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// % Revision 1.6 1998/08/01 21:32:01 neeri
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// % About ready for 2.0a1
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// %
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// % Revision 1.5 1998/01/25 20:53:52 neeri
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// % Engine implemented, except for signals & scheduling
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// %
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// % Revision 1.4 1997/11/13 21:12:10 neeri
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// % Fall 1997
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// %
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// % Revision 1.3 1996/11/24 13:00:27 neeri
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// % Fix comment leaders
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// %
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// % Revision 1.2 1996/11/24 12:52:06 neeri
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// % Added GUSIPipeSockets
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// %
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// % Revision 1.1.1.1 1996/11/03 02:43:32 neeri
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// % Imported into CVS
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// %
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// %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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//
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// \chapter{GUSI Configuration settings}
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//
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// GUSI stores its global configuration settings in the [[GUSIConfiguration]]
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// singleton class. To create the instance, GUSI calls the [[GUSISetupConfig]]
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// hook.
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//
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// <GUSIConfig.h>=
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#ifndef _GUSIConfig_
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#define _GUSIConfig_
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#ifdef GUSI_SOURCE
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#include "GUSIFileSpec.h"
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#include <ConditionalMacros.h>
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#if PRAGMA_STRUCT_ALIGN
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#pragma options align=native
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#endif
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// \section{Definition of configuration settings}
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//
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// The GUSIConfiguration has a single instance with read only access, accessible
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// with the static [[Instance]] member function.
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//
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// <Definition of class [[GUSIConfiguration]]>=
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class GUSIConfiguration {
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public:
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enum { kNoResource = -1, kDefaultResourceID = 10240 };
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static GUSIConfiguration * Instance();
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static GUSIConfiguration * CreateInstance(short resourceID = kDefaultResourceID);
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// To determine the file type and creator of a newly created file, we first try
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// to match one of the [[FileSuffix]] suffices.
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//
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// <Type and creator rules for newly created files>=
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struct FileSuffix {
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char suffix[4];
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OSType suffType;
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OSType suffCreator;
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};
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short fNumSuffices;
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FileSuffix * fSuffices;
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void ConfigureSuffices(short numSuffices, FileSuffix * suffices);
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// If none of the suffices matches, we apply the default type and creator. These
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// rules are applied with [[SetDefaultFType]].
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//
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// <Type and creator rules for newly created files>=
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OSType fDefaultType;
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OSType fDefaultCreator;
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void ConfigureDefaultTypeCreator(OSType defaultType, OSType defaultCreator);
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void SetDefaultFType(const GUSIFileSpec & name) const;
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// To simplify Macintosh friendly ports of simple, I/O bound programs it is
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// possible to specify automatic yielding on read() and write() calls.
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// [[AutoSpin]] will spin a cursor and/or yield the CPU if desired.
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//
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// <Automatic cursor spin>=
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bool fAutoSpin;
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void ConfigureAutoSpin(bool autoSpin);
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void AutoSpin() const;
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// GUSI applications can crash hard if QuickDraw is not initialized. Therefore, we
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// offer to initialize it automatically with the [[fAutoInitGraf]] feature.
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//
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// <Automatic initialization of QuickDraw>=
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bool fAutoInitGraf;
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void ConfigureAutoInitGraf(bool autoInitGraf);
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void AutoInitGraf();
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// Due to the organization of a UNIX filesystem, it is fairly easy to find
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// out how many subdirectories a given directory has, since the [[nlink]] field of
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// its inode will automatically contain the number of subdirectories[[+2]]. Therefore,
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// some UNIX derived code depends on this behaviour. When [[fAccurateStat]] is set,
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// GUSI emulates this behaviour, but be warned that this makes [[stat]] on
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// directories a much more expensive operation. If [[fAccurateStat]] is not set,
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// stat() gives the total number of entries in the directory[[+2]] as a conservative
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// estimate.
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//
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// <Various flags>=
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bool fAccurateStat;
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void ConfigureAccurateStat(bool accurateState);
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// The [[fSigPipe]] feature causes a signal [[SIGPIPE]] to be raised if an attempt
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// is made to write to a broken pipe.
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//
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// <Various flags>=
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bool fSigPipe;
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void ConfigureSigPipe(bool sigPipe);
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void BrokenPipe();
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// The [[fSigInt]] feature causes a signal [[SIGINT]] to be raised if the user presses
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// command-period.
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//
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// <Various flags>=
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bool fSigInt;
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void ConfigureSigInt(bool sigInt);
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void CheckInterrupt();
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// If [[fSharedOpen]] is set, open() opens files with shared read/write permission.
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//
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// <Various flags>=
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bool fSharedOpen;
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void ConfigureSharedOpen(bool sharedOpen);
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// If [[fHandleAppleEvents]] is set, GUSI automatically handles AppleEvents in its
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// event handling routine.
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//
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// <Various flags>=
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bool fHandleAppleEvents;
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void ConfigureHandleAppleEvents(bool handleAppleEvents);
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protected:
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GUSIConfiguration(short resourceID = kDefaultResourceID);
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private:
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// \section{Implementation of configuration settings}
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//
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// The sole instance of [[GUSIConfiguration]] is created on demand.
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//
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// <Privatissima of [[GUSIConfiguration]]>=
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static GUSIConfiguration * sInstance;
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// [[ConfigureSuffices]] sets up the suffix table.
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//
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// <Privatissima of [[GUSIConfiguration]]>=
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bool fWeOwnSuffices;
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// [[AutoSpin]] tests the flag inline, but performs the actual spinning out of
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// line.
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//
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// <Privatissima of [[GUSIConfiguration]]>=
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void DoAutoSpin() const;
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// [[AutoInitGraf]] works rather similarly to [[AutoSpin]].
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//
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// <Privatissima of [[GUSIConfiguration]]>=
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void DoAutoInitGraf();
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// [[CheckInterrupt]] raises a [[SIGINT]] signal if desired.
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//
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// <Privatissima of [[GUSIConfiguration]]>=
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bool CmdPeriod(const EventRecord * event);
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};
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#if PRAGMA_STRUCT_ALIGN
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#pragma options align=reset
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#endif
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// To create the sole instance of [[GUSIConfiguration]], we call [[GUSISetupConfig]]
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// which has to call [[GUSIConfiguration::CreateInstance]].
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//
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// <Definition of [[GUSISetupConfig]] hook>=
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#ifdef __MRC__
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#pragma noinline_func GUSISetupConfig
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#endif
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extern "C" void GUSISetupConfig();
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline GUSIConfiguration * GUSIConfiguration::Instance()
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{
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if (!sInstance)
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GUSISetupConfig();
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if (!sInstance)
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sInstance = new GUSIConfiguration();
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return sInstance;
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}
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inline GUSIConfiguration * GUSIConfiguration::CreateInstance(short resourceID)
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{
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if (!sInstance)
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sInstance = new GUSIConfiguration(resourceID);
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return sInstance;
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}
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline void GUSIConfiguration::ConfigureDefaultTypeCreator(OSType defaultType, OSType defaultCreator)
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{
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fDefaultType = defaultType;
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fDefaultCreator = defaultCreator;
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}
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline void GUSIConfiguration::ConfigureAutoSpin(bool autoSpin)
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{
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fAutoSpin = autoSpin;
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}
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline void GUSIConfiguration::AutoSpin() const
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{
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if (fAutoSpin)
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DoAutoSpin();
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}
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline void GUSIConfiguration::ConfigureAutoInitGraf(bool autoInitGraf)
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{
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fAutoInitGraf = autoInitGraf;
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}
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline void GUSIConfiguration::AutoInitGraf()
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{
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if (fAutoInitGraf)
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DoAutoInitGraf();
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}
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline void GUSIConfiguration::ConfigureSigPipe(bool sigPipe)
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{
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fSigPipe = sigPipe;
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}
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline void GUSIConfiguration::ConfigureSigInt(bool sigInt)
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{
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fSigInt = sigInt;
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}
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// <Inline member functions for class [[GUSIConfiguration]]>=
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inline void GUSIConfiguration::ConfigureAccurateStat(bool accurateStat)
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{
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fAccurateStat = accurateStat;
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}
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inline void GUSIConfiguration::ConfigureSharedOpen(bool sharedOpen)
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{
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fSharedOpen = sharedOpen;
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}
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#endif /* GUSI_SOURCE */
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#endif /* _GUSIConfig_ */
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