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gecko-dev/lib/libaddr/abfile.cpp

1873 строки
50 KiB
C++
Исходник Обычный вид История

Adding libaddr as part of Normandy merge
1998-06-23 01:46:46 +04:00
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
/* file: abfile.cpp
** Most portions closely derive from public domain IronDoc code and interfaces.
**
** Changes:
** <1> 06Feb1998 first implementation
** <0> 23Dec1997 first interface draft
*/
#ifndef _ABTABLE_
#include "abtable.h"
#endif
#ifndef _ABMODEL_
#include "abmodel.h"
#endif
/*3456789_123456789_123456789_123456789_123456789_123456789_123456789_12345678*/
/* ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- */
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
static const char* ab_File_kClassName /*i*/ = "ab_File";
#endif /* end AB_CONFIG_TRACE_orDEBUG_orPRINT*/
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
static const char* AB_File_kClassName /*i*/ = "AB_File";
#endif /* end AB_CONFIG_TRACE_orDEBUG_orPRINT*/
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
static const char* ab_StdioFile_kClassName /*i*/ = "ab_StdioFile";
#endif /* end AB_CONFIG_TRACE_orDEBUG_orPRINT*/
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
static const char* ab_Stream_kClassName /*i*/ = "ab_Stream";
#endif /* end AB_CONFIG_TRACE_orDEBUG_orPRINT*/
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
static const char* ab_StringFile_kClassName /*i*/ = "ab_StringFile";
#endif /* end AB_CONFIG_TRACE_orDEBUG_orPRINT*/
/*=============================================================================
* ab_File: abstract file interface
*/
// ````` ````` ````` ````` ````` ````` ````` `````
// virtual ab_Object methods
static const char* ab_File_k_empty_string = ""; // for null or empty filename
ab_File::~ab_File() /*i*/
{
AB_ASSERT(mFile_Name==ab_File_k_empty_string);
}
char* ab_File::ObjectAsString(ab_Env* ev, char* outXmlBuf) const /*i*/
{
AB_USED_PARAMS_1(ev);
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
char fileFlags[ 5 ];
fileFlags[ 0 ] = (FileFrozen())? 'F' : 'f';
fileFlags[ 1 ] = (FileDoTrace())? 'T' : 't';
fileFlags[ 2 ] = (FileIoOpen())? 'O' : 'o';
fileFlags[ 3 ] = (FileActive())? 'A' : 'a';
fileFlags[ 4 ] = '\0';
const char* name = (mFile_Name)? mFile_Name : "<nil>";
XP_SPRINTF(outXmlBuf,
"<ab:file:str me=\"^%lX\" flags=\"%.4s\" fn=\"%.96s\" rc=\"%lu\" a=\"%.9s\" u=\"%.9s\"/>",
(long) this, // me=\"^%lX\"
fileFlags, // flags=\"%.4s\"
name, // fn=\"%.96s\"
(unsigned long) mObject_RefCount, // rc=\"%lu\"
this->GetObjectAccessAsString(), // ac=\"%.9s\"
this->GetObjectUsageAsString() // us=\"%.9s\"
);
#else
*outXmlBuf = 0; /* empty string */
#endif /*AB_CONFIG_TRACE_orDEBUG_orPRINT*/
return outXmlBuf;
}
// ````` ````` ````` ````` ````` ````` ````` `````
// non-poly ab_File methods
ab_File::ab_File(const ab_Usage& inUsage) /*i*/
: ab_Object(inUsage),
mFile_Frozen( 0 ),
mFile_DoTrace( 0 ),
mFile_IoOpen( 0 ),
mFile_Active( 0 ),
mFile_Name( ab_File_k_empty_string ),
mFile_FormatHint( ab_File_kUnknownFormat )
{
}
void ab_File::CloseFile(ab_Env* ev) /*i*/
{
ab_File_BeginMethod(this, ev, ab_File_kClassName, "CloseFile")
this->ChangeFileName(ev, ab_File_k_empty_string);
ab_File_EndMethod(this, ev)
}
ab_File_eFormat ab_File::GuessFileFormat(ab_Env* ev) /*i*/
{
ab_File_eFormat outFormat = ab_File_kUnknownFormat;
ab_File_BeginMethod(this, ev, ab_File_kClassName, "GuessFileFormat")
ev->NewAbookFault(AB_Env_kFaultMethodStubOnly);
ab_File_EndMethod(this, ev)
return outFormat;
}
void ab_File::ChangeFileName(ab_Env* ev, const char* inFileName) /*i*/
// inFileName can be nil (which has the same effect as passing "")
{
ab_File_BeginMethod(this, ev, ab_File_kClassName, "ChangeFileName")
if ( !inFileName )
inFileName = ab_File_k_empty_string;
#ifdef AB_CONFIG_TRACE
if ( this->FileDoTrace() && ev->DoTrace() )
ev->Trace("<ab:file:change:name from=\"%.96s\" to=\".96s\"/>",
mFile_Name, inFileName);
#endif /*AB_CONFIG_TRACE*/
char* name = (char*) mFile_Name; // cast away const in case free occurs
if ( name && name != ab_File_k_empty_string )
ev->FreeString(name);
if ( *inFileName )
mFile_Name = ev->CopyString(inFileName);
else
mFile_Name = ab_File_k_empty_string;
ab_File_EndMethod(this, ev)
}
void ab_File::NewFileDownFault(ab_Env* ev) const /*i*/
// call NewFileDownFault() when either IsOpenAndActiveFile()
// is false, or when IsOpenActiveAndMutableFile() is false.
{
ab_File_BeginMethod(this, ev, ab_File_kClassName, "NewFileDownFault")
#ifdef AB_CONFIG_TRACE
if ( this->FileDoTrace() && ev->DoTrace() )
this->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
if ( this->IsOpenObject() )
{
if ( this->FileActive() )
{
if ( this->FileFrozen() )
{
ev->NewAbookFault(ab_File_kFaultFrozen);
}
else ev->NewAbookFault(ab_File_kFaultDownUnknown);
}
else ev->NewAbookFault(ab_File_kFaultNotActive);
}
else ev->NewAbookFault(ab_File_kFaultNotOpen);
ab_File_EndMethod(this, ev)
}
void ab_File::NewFileErrnoFault(ab_Env* ev) const /*i*/
// call NewFileErrnoFault() to convert std C errno into AB fault
{
ab_error_uid faultCode = (ab_error_uid) errno; // capture first thing
ab_File_BeginMethod(this, ev, ab_File_kClassName, "NewFileErrnoFault")
#ifdef AB_CONFIG_TRACE
if ( this->FileDoTrace() && ev->DoTrace() )
this->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
if ( !faultCode ) // errno is unexpectedly equal to zero?
faultCode = ab_File_kFaultZeroErrno;
ev->NewFault(faultCode, /*space*/ AB_Fault_kErrnoSpace);
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` newlines ````` ````` ````` `````
#ifdef XP_MAC
static const char* ab_File_kNewlines =
"\015\015\015\015\015\015\015\015\015\015\015\015\015\015\015\015";
# define ab_File_kNewlinesCount 16
#else
# if defined(XP_WIN) || defined(XP_OS2)
static const char* ab_File_kNewlines =
"\015\012\015\012\015\012\015\012\015\012\015\012\015\012\015\012";
# define ab_File_kNewlinesCount 8
# else
# ifdef XP_UNIX
static const char* ab_File_kNewlines =
"\012\012\012\012\012\012\012\012\012\012\012\012\012\012\012\012";
# define ab_File_kNewlinesCount 16
# endif /* XP_UNIX */
# endif /* XP_WIN */
#endif /* XP_MAC */
void // (close copy of IronDoc's FeStdioFile_WriteNewlines() )
ab_File::WriteNewlines(ab_Env* ev, ab_num inNewlines) /*i*/
{
while ( inNewlines && ev->Good() ) // more newlines to write?
{
ab_u4 quantum = inNewlines;
if ( quantum > ab_File_kNewlinesCount )
quantum = ab_File_kNewlinesCount;
this->Write(ev, ab_File_kNewlines, quantum * ab_kNewlineSize);
inNewlines -= quantum;
}
}
/*=============================================================================
* ab_StdioFile: concrete file using standard C file io
*/
// ````` ````` ````` ````` ````` ````` ````` `````
// virtual ab_File methods
ab_pos ab_StdioFile::Length(ab_Env* ev) const /*i*/
{
ab_pos outPos = 0;
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "Length")
if ( this->IsOpenAndActiveFile() )
{
FILE* file = (FILE*) mStdioFile_File;
if ( file )
{
long start = XP_FileTell(file);
if ( start >= 0 )
{
long fore = XP_FileSeek(file, 0, SEEK_END);
if ( fore >= 0 )
{
long eof = XP_FileTell(file);
if ( eof >= 0 )
{
long back = XP_FileSeek(file, start, SEEK_SET);
if ( back >= 0 )
outPos = eof;
else
this->new_stdio_file_fault(ev);
}
else this->new_stdio_file_fault(ev);
}
else this->new_stdio_file_fault(ev);
}
else this->new_stdio_file_fault(ev);
}
else ev->NewAbookFault(ab_File_kFaultMissingIo);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outPos;
}
ab_pos ab_StdioFile::Tell(ab_Env* ev) const /*i*/
{
ab_pos outPos = 0;
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "Tell")
if ( this->IsOpenAndActiveFile() )
{
FILE* file = (FILE*) mStdioFile_File;
if ( file )
{
long where = XP_FileTell(file);
if ( where >= 0 )
outPos = where;
else
this->new_stdio_file_fault(ev);
}
else ev->NewAbookFault(ab_File_kFaultMissingIo);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outPos;
}
ab_num ab_StdioFile::Read(ab_Env* ev, void* outBuf, ab_num inSize) /*i*/
{
ab_num outCount = 0;
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "Read")
if ( this->IsOpenAndActiveFile() )
{
FILE* file = (FILE*) mStdioFile_File;
if ( file )
{
long count = XP_FileRead(outBuf, inSize, file);
if ( count >= 0 )
{
outCount = (ab_num) count;
}
else this->new_stdio_file_fault(ev);
}
else ev->NewAbookFault(ab_File_kFaultMissingIo);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outCount;
}
ab_pos ab_StdioFile::Seek(ab_Env* ev, ab_pos inPos) /*i*/
{
ab_pos outPos = 0;
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "Seek")
if ( this->IsOpenOrClosingObject() && this->FileActive() )
{
FILE* file = (FILE*) mStdioFile_File;
if ( file )
{
long where = XP_FileSeek(file, inPos, SEEK_SET);
if ( where >= 0 )
outPos = inPos;
else
this->new_stdio_file_fault(ev);
}
else ev->NewAbookFault(ab_File_kFaultMissingIo);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outPos;
}
ab_num ab_StdioFile::Write(ab_Env* ev, const void* inBuf, ab_num inSize) /*i*/
{
ab_num outCount = 0;
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "Write")
if ( this->IsOpenActiveAndMutableFile() )
{
FILE* file = (FILE*) mStdioFile_File;
if ( file )
{
if ( fwrite(inBuf, 1, inSize, file) >= 0 )
outCount = inSize;
else
this->new_stdio_file_fault(ev);
}
else ev->NewAbookFault(ab_File_kFaultMissingIo);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outCount;
}
void ab_StdioFile::Flush(ab_Env* ev) /*i*/
{
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "Flush")
if ( this->IsOpenOrClosingObject() && this->FileActive() )
{
FILE* file = (FILE*) mStdioFile_File;
if ( file )
{
XP_FileFlush(file);
}
else ev->NewAbookFault(ab_File_kFaultMissingIo);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` ````` ````` ````` `````
// virtual ab_Object methods
char* ab_StdioFile::ObjectAsString(ab_Env* ev, char* outXmlBuf) const /*i*/
{
AB_USED_PARAMS_1(ev);
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
const char* name = (mFile_Name)? mFile_Name : "<nil>";
XP_SPRINTF(outXmlBuf,
"<ab:stdio:file:str me=\"^%lX\" sf=\"^%lX\" fn=\"%.96s\" rc=\"%lu\" a=\"%.9s\" u=\"%.9s\"/>",
(long) this, // me=\"^%lX\"
(long) mStdioFile_File, // sf=\"^%lX\"
name, // fn=\"%.96s\"
(unsigned long) mObject_RefCount, // rc=\"%lu\"
this->GetObjectAccessAsString(), // ac=\"%.9s\"
this->GetObjectUsageAsString() // us=\"%.9s\"
);
#else
*outXmlBuf = 0; /* empty string */
#endif /*AB_CONFIG_TRACE_orDEBUG_orPRINT*/
return outXmlBuf;
}
void ab_StdioFile::CloseObject(ab_Env* ev) /*i*/
{
if ( this->IsOpenObject() )
{
this->MarkClosing();
this->CloseStdioFile(ev);
this->MarkShut();
}
}
void ab_StdioFile::PrintObject(ab_Env* ev, ab_Printer* ioPrinter) const /*i*/
{
#ifdef AB_CONFIG_PRINT
ioPrinter->PutString(ev, "<ab:stdio:file>");
char xmlBuf[ ab_Object_kXmlBufSize + 2 ];
if ( this->IsOpenObject() )
{
ioPrinter->PushDepth(ev); // indent all objects in the list
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev, this->ab_File::ObjectAsString(ev, xmlBuf));
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev, this->ObjectAsString(ev, xmlBuf));
ioPrinter->PopDepth(ev); // stop indentation
}
else // use ab_Object::ObjectAsString() for non-objects:
{
ioPrinter->PutString(ev, this->ab_Object::ObjectAsString(ev, xmlBuf));
}
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev, "</ab:stdio:file>");
#endif /*AB_CONFIG_PRINT*/
}
ab_StdioFile::~ab_StdioFile() /*i*/
{
AB_ASSERT(mStdioFile_File==0);
}
// ````` ````` ````` ````` ````` ````` ````` `````
// protected non-poly ab_StdioFile methods
void ab_StdioFile::new_stdio_file_fault(ab_Env* ev) const
{
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName,
"new_stdio_file_fault")
FILE* file = (FILE*) mStdioFile_File;
#if defined(AB_CONFIG_DEBUG) || defined(AB_CONFIG_TRACE)
if ( file && ferror(file) != errno )
{
long fe = ferror(file);
long e = errno;
#if defined(AB_CONFIG_TRACE) && !defined(AB_CONFIG_DEBUG)
if ( this->DoTrace() && ev->DoTrace() )
ev->Trace(ev, "ferror(f)=%ld errno=%ld", fe, e);
#endif /* debug but not trace */
ev->Break("ferror(f)=%ld errno=%ld", fe, e);
}
#endif /*AB_CONFIG_DEBUG or AB_CONFIG_TRACE*/
if ( !errno && file )
errno = ferror(file);
this->NewFileErrnoFault(ev);
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` ````` ````` ````` `````
// public non-poly ab_StdioFile methods
ab_StdioFile::ab_StdioFile(const ab_Usage& inUsage) /*i*/
: ab_File(inUsage),
mStdioFile_File( 0 )
{
}
ab_StdioFile::ab_StdioFile(ab_Env* ev, const ab_Usage& inUsage, /*i*/
const char* inName, const char* inMode)
// calls OpenStdio() after construction
: ab_File(inUsage),
mStdioFile_File( 0 )
{
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName,
ab_StdioFile_kClassName)
if ( ev->Good() )
{
this->OpenStdio(ev, inName, inMode);
}
ab_File_EndMethod(this, ev)
}
ab_StdioFile::ab_StdioFile(ab_Env* ev, const ab_Usage& inUsage, /*i*/
void* ioFile, const char* inName, ab_bool inFrozen)
// calls UseStdio() after construction
: ab_File(inUsage),
mStdioFile_File( 0 )
{
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName,
ab_StdioFile_kClassName)
if ( ev->Good() )
{
this->UseStdio(ev, ioFile, inName, inFrozen);
}
ab_File_EndMethod(this, ev)
}
// ````` ````` globals for GetLogStdioFile() ````` `````
char ab_StdioFile_g_log_file_name[ 32 ];
FILE* ab_StdioFile_g_log_file = 0;
ab_StdioFile* ab_StdioFile_g_log_stdio_file = 0;
/*static*/
ab_StdioFile* ab_StdioFile::GetLogStdioFile(ab_Env* ev) /*i*/
// return the standard log file used by ab_StdioFile for each session.
{
// (static file methods must the Env method macros:)
ab_Env_BeginMethod(ev, ab_StdioFile_kClassName, "GetLogStdioFile")
if ( !ab_StdioFile_g_log_stdio_file )
{
FILE* file = ab_StdioFile_g_log_file;
if ( !file )
{
time_t now; time(&now);
char* fileName = ab_StdioFile_g_log_file_name;
XP_SPRINTF(fileName, "ab.%lX.log", (long) now);
file = fopen(fileName, "a+");
if ( file )
ab_StdioFile_g_log_file = file;
else
{
ab_error_uid faultCode = (ab_error_uid) errno;
if ( !faultCode ) // errno is unexpectedly equal to zero?
faultCode = ab_File_kFaultZeroErrno;
ev->NewFault(faultCode, /*space*/ AB_Fault_kErrnoSpace);
}
}
if ( file )
{
char* fileName = ab_StdioFile_g_log_file_name;
ab_bool frozen = AB_kFalse;
ab_StdioFile* stdioFile = new(*ev)
ab_StdioFile(ev, ab_Usage::kHeap, file, fileName, frozen);
if ( stdioFile )
{
ab_StdioFile_g_log_stdio_file = stdioFile;
stdioFile->AcquireObject(ev);
}
}
else
{
ab_error_uid faultCode = (ab_error_uid) errno;
if ( !faultCode ) // errno is unexpectedly equal to zero?
faultCode = ab_File_kFaultZeroErrno;
ev->NewFault(faultCode, /*space*/ AB_Fault_kErrnoSpace);
}
}
ab_Env_EndMethod(ev)
return ab_StdioFile_g_log_stdio_file;
}
void ab_StdioFile::CloseStdioFile(ab_Env* ev) /*i*/
{
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "CloseStdioFile")
if ( mStdioFile_File && this->FileActive() && this->FileIoOpen() )
{
this->CloseStdio(ev);
}
mStdioFile_File = 0;
this->CloseFile(ev);
ab_File_EndMethod(this, ev)
}
void ab_StdioFile::OpenStdio(ab_Env* ev, const char* inName, /*i*/
const char* inMode)
// Open a new FILE with name inName, using mode flags from inMode.
{
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "OpenStdio")
if ( ev->Good() )
{
if ( !inMode )
inMode = "";
ab_bool frozen = (*inMode == 'r'); // cursory attempt to note readonly
if ( this->IsOpenObject() )
{
if ( !this->FileActive() )
{
this->SetFileIoOpen(AB_kFalse);
if ( inName && *inName )
{
this->ChangeFileName(ev, inName);
if ( ev->Good() )
{
FILE* file = fopen(inName, inMode);
if ( file )
{
mStdioFile_File = file;
this->SetFileActive(AB_kTrue);
this->SetFileIoOpen(AB_kTrue);
this->SetFileFrozen(frozen);
}
else
this->new_stdio_file_fault(ev);
}
}
else ev->NewAbookFault(ab_File_kFaultNoFileName);
}
else ev->NewAbookFault(ab_File_kFaultAlreadyActive);
}
else this->NewFileDownFault(ev);
}
ab_File_EndMethod(this, ev)
}
void ab_StdioFile::UseStdio(ab_Env* ev, void* ioFile, /*i*/
const char* inName, ab_bool inFrozen)
// Use an existing file, like stdin/stdout/stderr, which should not
// have the io stream closed when the file is closed. The ioFile
// parameter must actually be of type FILE (but we don't want to make
// this header file include the stdio.h header file).
{
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "UseStdio")
if ( ev->Good() )
{
if ( this->IsOpenObject() )
{
if ( !this->FileActive() )
{
if ( ioFile )
{
this->SetFileIoOpen(AB_kFalse);
this->ChangeFileName(ev, inName);
if ( ev->Good() )
{
mStdioFile_File = ioFile;
this->SetFileActive(AB_kTrue);
this->SetFileFrozen(inFrozen);
}
}
else ev->NewAbookFault(ab_File_kFaultNullOpaqueParameter);
}
else ev->NewAbookFault(ab_File_kFaultAlreadyActive);
}
else this->NewFileDownFault(ev);
}
ab_File_EndMethod(this, ev)
}
void ab_StdioFile::CloseStdio(ab_Env* ev) /*i*/
// Close the stream io if both and FileActive() and FileIoOpen(), but
// this does not close this instances (like CloseStdioFile() does).
// If stream io was made active by means of calling UseStdio(),
// then this method does little beyond marking the stream inactive
// because FileIoOpen() is false.
{
ab_File_BeginMethod(this, ev, ab_StdioFile_kClassName, "CloseStdio")
if ( mStdioFile_File && this->FileActive() && this->FileIoOpen() )
{
FILE* file = (FILE*) mStdioFile_File;
if ( XP_FileClose(file) < 0 )
this->new_stdio_file_fault(ev);
mStdioFile_File = 0;
this->SetFileActive(AB_kFalse);
this->SetFileIoOpen(AB_kFalse);
}
ab_File_EndMethod(this, ev)
}
/*=============================================================================
* ab_Stream: buffered file i/o
*/
// ````` ````` ````` ````` ````` ````` ````` `````
// virtual ab_File methods
ab_pos ab_Stream::Length(ab_Env* ev) const /*i*/
{
ab_pos outPos = 0;
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "Length")
ab_File* file = mStream_ContentFile;
if ( this->IsOpenAndActiveFile() && file )
{
ab_pos contentEof = file->Length(ev);
if ( mStream_WriteEnd ) // this stream supports writing?
{
// the local buffer might have buffered content past content eof
if ( ev->Good() ) // no error happened during Length() above?
{
ab_u1* at = mStream_At;
ab_u1* buf = mStream_Buf;
if ( at >= buf ) // expected cursor order?
{
ab_pos localContent = mStream_BufPos + (at - buf);
if ( localContent > contentEof ) // buffered past eof?
contentEof = localContent; // return new logical eof
outPos = contentEof;
}
else ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
}
}
else
outPos = contentEof; // frozen files get length from content file
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outPos;
}
ab_pos ab_Stream::Tell(ab_Env* ev) const /*i*/
{
ab_pos outPos = 0;
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "Tell")
ab_File* file = mStream_ContentFile;
if ( this->IsOpenAndActiveFile() && file )
{
ab_u1* buf = mStream_Buf;
ab_u1* at = mStream_At;
ab_u1* readEnd = mStream_ReadEnd; // nonzero only if readonly
ab_u1* writeEnd = mStream_WriteEnd; // nonzero only if writeonly
if ( writeEnd )
{
if ( buf && at >= buf && at <= writeEnd )
{
outPos = mStream_BufPos + (at - buf);
}
else ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
}
else if ( readEnd )
{
if ( buf && at >= buf && at <= readEnd )
{
outPos = mStream_BufPos + (at - buf);
}
else ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
}
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outPos;
}
ab_num ab_Stream::Read(ab_Env* ev, void* outBuf, ab_num inSize)
{
// First we satisfy the request from buffered bytes, if any. Then
// if additional bytes are needed, we satisfy these by direct reads
// from the content file without any local buffering (but we still need
// to adjust the buffer position to reflect the current i/o point).
ab_pos outActual = 0;
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "Read")
ab_File* file = mStream_ContentFile;
if ( this->IsOpenAndActiveFile() && file )
{
ab_u1* end = mStream_ReadEnd; // byte after last buffered byte
if ( end ) // file is open for read access?
{
if ( inSize ) // caller wants any output?
{
ab_u1* sink = (ab_u1*) outBuf; // where we plan to write bytes
if ( sink ) // caller passed good buffer address?
{
ab_u1* at = mStream_At;
ab_u1* buf = mStream_Buf;
if ( at >= buf && at <= end ) // expected cursor order?
{
ab_num remaining = end - at; // bytes left in buffer
ab_num quantum = inSize; // number of bytes to copy
if ( quantum > remaining ) // more than buffer content?
quantum = remaining; // restrict to buffered bytes
if ( quantum ) // any bytes left in the buffer?
{
AB_MEMCPY(sink, at, quantum); // from buffer bytes
at += quantum; // advance past read bytes
mStream_At = at;
outActual += quantum; // this much copied so far
sink += quantum; // in case we need to copy more
inSize -= quantum; // filled this much of request
mStream_HitEof = AB_kFalse;
}
if ( inSize ) // we still need to read more content?
{
// We need to read more bytes directly from the
// content file, without local buffering. We have
// exhausted the local buffer, so we need to show
// it is now empty, and adjust the current buf pos.
ab_num posDelta = (at - buf); // old buf content
mStream_BufPos += posDelta; // past now empty buf
mStream_At = mStream_ReadEnd = buf; // empty buffer
file->Seek(ev, mStream_BufPos); // set file pos
if ( ev->Good() ) // no seek error?
{
ab_num actual = file->Read(ev, sink, inSize);
if ( ev->Good() ) // no read error?
{
if ( actual )
{
outActual += actual;
mStream_BufPos += actual;
mStream_HitEof = AB_kFalse;
}
else if ( !outActual )
mStream_HitEof = AB_kTrue;
}
}
}
}
else ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
}
else ev->NewAbookFault(ab_File_kFaultNullBuffer);
}
}
else ev->NewAbookFault(ab_File_kFaultCantReadSink);
}
else this->NewFileDownFault(ev);
if ( ev->Bad() )
outActual = 0;
ab_File_EndMethod(this, ev)
return outActual;
}
ab_pos ab_Stream::Seek(ab_Env* ev, ab_pos inPos)
{
ab_pos outPos = 0;
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "Seek")
ab_File* file = mStream_ContentFile;
if ( this->IsOpenOrClosingObject() && this->FileActive() && file )
{
ab_u1* at = mStream_At; // current position in buffer
ab_u1* buf = mStream_Buf; // beginning of buffer
ab_u1* readEnd = mStream_ReadEnd; // nonzero only if readonly
ab_u1* writeEnd = mStream_WriteEnd; // nonzero only if writeonly
if ( writeEnd ) // file is mutable/writeonly?
{
if ( mStream_Dirty ) // need to commit buffer changes?
this->Flush(ev);
if ( ev->Good() ) // no errors during flush or earlier?
{
if ( at == buf ) // expected post flush cursor value?
{
if ( mStream_BufPos != inPos ) // need to change pos?
{
ab_pos eof = file->Length(ev);
if ( ev->Good() ) // no errors getting length?
{
if ( inPos <= eof ) // acceptable new position?
{
mStream_BufPos = inPos; // new stream position
outPos = inPos;
}
else ev->NewAbookFault(ab_File_kFaultPosBeyondEof);
}
}
}
else ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
}
}
else if ( readEnd ) // file is frozen/readonly?
{
if ( at >= buf && at <= readEnd ) // expected cursor order?
{
ab_pos eof = file->Length(ev);
if ( ev->Good() ) // no errors getting length?
{
if ( inPos <= eof ) // acceptable new position?
{
outPos = inPos;
mStream_BufPos = inPos; // new stream position
mStream_At = mStream_ReadEnd = buf; // empty buffer
if ( inPos == eof ) // notice eof reached?
mStream_HitEof = AB_kTrue;
}
else ev->NewAbookFault(ab_File_kFaultPosBeyondEof);
}
}
else ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
}
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outPos;
}
ab_num ab_Stream::Write(ab_Env* ev, const void* inBuf, ab_num inSize)
{
ab_num outActual = 0;
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "Write")
ab_File* file = mStream_ContentFile;
if ( this->IsOpenActiveAndMutableFile() && file )
{
ab_u1* end = mStream_WriteEnd; // byte after last buffered byte
if ( end ) // file is open for write access?
{
if ( inSize ) // caller provided any input?
{
const ab_u1* source = (const ab_u1*) inBuf; // from where
if ( source ) // caller passed good buffer address?
{
ab_u1* at = mStream_At;
ab_u1* buf = mStream_Buf;
if ( at >= buf && at <= end ) // expected cursor order?
{
ab_num space = end - at; // space left in buffer
ab_num quantum = inSize; // number of bytes to write
if ( quantum > space ) // more than buffer size?
quantum = space; // restrict to avail space
if ( quantum ) // any space left in the buffer?
{
mStream_Dirty = AB_kTrue; // to ensure later flush
AB_MEMCPY(at, source, quantum); // into buffer
mStream_At += quantum; // advance past written bytes
outActual += quantum; // this much written so far
source += quantum; // in case we need to write more
inSize -= quantum; // filled this much of request
}
if ( inSize ) // we still need to write more content?
{
// We need to write more bytes directly to the
// content file, without local buffering. We have
// exhausted the local buffer, so we need to flush
// it and empty it, and adjust the current buf pos.
// After flushing, if the rest of the write fits
// inside the buffer, we will put bytes into the
// buffer rather than write them to content file.
if ( mStream_Dirty )
this->Flush(ev); // will update mStream_BufPos
at = mStream_At;
if ( at < buf || at > end ) // bad cursor?
ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
if ( ev->Good() ) // no errors?
{
space = end - at; // space left in buffer
if ( space > inSize ) // write to buffer?
{
mStream_Dirty = AB_kTrue; // ensure flush
AB_MEMCPY(at, source, inSize); // copy
mStream_At += inSize; // past written bytes
outActual += inSize; // this much written
}
else // directly to content file instead
{
file->Seek(ev, mStream_BufPos); // set pos
if ( ev->Good() ) // no seek error?
{
ab_num actual =
file->Write(ev, source, inSize);
if ( ev->Good() ) // no write error?
{
outActual += actual;
mStream_BufPos += actual;
}
}
}
}
}
}
else ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
}
else ev->NewAbookFault(ab_File_kFaultNullBuffer);
}
}
else ev->NewAbookFault(ab_File_kFaultCantWriteSource);
}
else this->NewFileDownFault(ev);
if ( ev->Bad() )
outActual = 0;
ab_File_EndMethod(this, ev)
return outActual;
}
void ab_Stream::Flush(ab_Env* ev)
{
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "Flush")
ab_File* file = mStream_ContentFile;
if ( this->IsOpenOrClosingObject() && this->FileActive() && file )
{
if ( mStream_Dirty )
this->spill_buf(ev);
file->Flush(ev);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
}
void ab_Stream::spill_buf(ab_Env* ev)
{
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "spill_buf")
ab_File* file = mStream_ContentFile;
if ( this->IsOpenOrClosingObject() && this->FileActive() && file )
{
ab_u1* buf = mStream_Buf;
if ( mStream_Dirty )
{
ab_u1* at = mStream_At;
if ( at >= buf && at <= mStream_WriteEnd ) // order?
{
ab_num count = at - buf; // the number of bytes buffered
if ( count ) // anything to write to the string?
{
if ( count > mStream_BufSize ) // no more than max?
{
count = mStream_BufSize;
mStream_WriteEnd = buf + mStream_BufSize;
ev->NewAbookFault(ab_String_kFaultBadCursorFields);
}
if ( ev->Good() )
{
file->Seek(ev, mStream_BufPos);
if ( ev->Good() )
{
file->Write(ev, buf, count);
if ( ev->Good() )
{
mStream_BufPos += count; // past bytes written
mStream_At = buf; // reset buffer cursor
mStream_Dirty = AB_kFalse;
}
}
}
}
}
else ev->NewAbookFault(ab_File_kFaultBadCursorOrder);
}
else
{
#ifdef AB_CONFIG_TRACE
this->TraceObject(ev);
#endif /*AB_CONFIG_TRACE*/
#ifdef AB_CONFIG_DEBUG
ev->Break("<ab:stream:spill:not:dirty me=\"^%lX\"/>", (long) this);
#endif /*AB_CONFIG_DEBUG*/
}
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` ````` ````` ````` `````
// virtual ab_Object methods
char* ab_Stream::ObjectAsString(ab_Env* ev, char* outXmlBuf) const
{
AB_USED_PARAMS_1(ev);
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
XP_SPRINTF(outXmlBuf,
"<ab:stream:str me=\"^%lX\" cf=\"^%lX\" buf=\"^%lX\" bs=\"%lu\" rc=\"%lu\" a=\"%.9s\" u=\"%.9s\"/>",
(long) this, // me=\"^%lX\"
(long) mStream_ContentFile, // cf=\"^%lX\"
(long) mStream_Buf, // buf=\"^%lX\"
(long) mStream_BufSize, // bs=\"%lu\"
(unsigned long) mObject_RefCount, // rc=\"%lu\"
this->GetObjectAccessAsString(), // ac=\"%.9s\"
this->GetObjectUsageAsString() // us=\"%.9s\"
);
#else
*outXmlBuf = 0; /* empty string */
#endif /*AB_CONFIG_TRACE_orDEBUG_orPRINT*/
return outXmlBuf;
}
void ab_Stream::CloseObject(ab_Env* ev)
{
if ( this->IsOpenObject() )
{
this->MarkClosing();
this->CloseStream(ev);
this->MarkShut();
}
}
void ab_Stream::PrintObject(ab_Env* ev, ab_Printer* ioPrinter) const
{
#ifdef AB_CONFIG_PRINT
ioPrinter->PutString(ev, "<ab:stream>");
char xmlBuf[ ab_Object_kXmlBufSize + 2 ];
if ( this->IsOpenObject() )
{
ioPrinter->PushDepth(ev); // indent all objects in the list
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev, this->ObjectAsString(ev, xmlBuf));
if ( mStream_ContentFile )
{
ioPrinter->NewlineIndent(ev, /*count*/ 1);
mStream_ContentFile->PrintObject(ev, ioPrinter);
}
if ( mStream_Buf && ev->mEnv_BeVerbose && !ev->mEnv_BeConcise )
{
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->Hex(ev, mStream_Buf, mStream_BufSize, /*pos*/ 0);
}
ioPrinter->PopDepth(ev); // stop indentation
}
else // use ab_Object::ObjectAsString() for non-objects:
{
ioPrinter->PutString(ev, this->ab_Object::ObjectAsString(ev, xmlBuf));
}
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev, "</ab:stream>");
#else /*AB_CONFIG_PRINT*/
AB_USED_PARAMS_2(ev,ioPrinter);
#endif /*AB_CONFIG_PRINT*/
}
ab_Stream::~ab_Stream()
{
AB_ASSERT(mStream_Buf==0);
AB_ASSERT(mStream_ContentFile==0);
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
ab_Object* obj = mStream_ContentFile;
if ( obj )
obj->ObjectNotReleasedPanic(ab_Stream_kClassName);
#endif /*AB_CONFIG_TRACE_orDEBUG_orPRINT*/
}
void ab_Stream::PutString(ab_Env* ev, const char* inString) /*i*/
{
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "PutString")
if ( inString )
{
ab_num length = AB_STRLEN(inString);
if ( length && ev->Good() ) // any bytes to write?
{
this->Write(ev, inString, length);
}
}
ab_File_EndMethod(this, ev)
}
void ab_Stream::PutStringThenNewline(ab_Env* ev, const char* inString) /*i*/
{
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "PutStringThenNewline")
if ( inString )
{
ab_num length = AB_STRLEN(inString);
if ( length && ev->Good() ) // any bytes to write?
{
this->Write(ev, inString, length);
if ( ev->Good() )
this->WriteNewlines(ev, /*count*/ 1);
}
}
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` ````` ````` ````` `````
// protected non-poly ab_Stream methods (for char io)
int ab_Stream::fill_getc(ab_Env* ev) /*i*/
{
int c = EOF;
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "fill_getc")
ab_File* file = mStream_ContentFile;
if ( this->IsOpenAndActiveFile() && file )
{
ab_u1* buf = mStream_Buf;
ab_u1* end = mStream_ReadEnd; // beyond buf after earlier read
if ( end > buf ) // any earlier read bytes buffered?
{
mStream_BufPos += ( end - buf ); // advance past old read
}
if ( ev->Good() ) // no errors yet?
{
file->Seek(ev, mStream_BufPos); // set file pos
if ( ev->Good() ) // no seek error?
{
ab_num actual = file->Read(ev, buf, mStream_BufSize);
if ( ev->Good() ) // no read errors?
{
if ( actual > mStream_BufSize ) // more than asked for??
actual = mStream_BufSize;
mStream_At = buf;
mStream_ReadEnd = buf + actual;
if ( actual ) // any bytes actually read?
{
c = *mStream_At++; // return first byte from buffer
mStream_HitEof = AB_kFalse;
}
else
mStream_HitEof = AB_kTrue;
}
}
}
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return c;
}
void ab_Stream::spill_putc(ab_Env* ev, int c) /*i*/
{
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "spill_putc")
this->spill_buf(ev);
if ( ev->Good() && mStream_At < mStream_WriteEnd )
this->Putc(ev, c);
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` ````` ````` ````` `````
// non-poly ab_Stream methods
ab_Stream::ab_Stream(ab_Env* ev, const ab_Usage& inUsage, /*i*/
ab_File* ioContentFile, ab_num inBufSize, ab_bool inFrozen)
: ab_File(inUsage),
mStream_At( 0 ),
mStream_ReadEnd( 0 ), // logical end of read buffered content
mStream_WriteEnd( 0 ), // physical end of buffer
mStream_ContentFile( 0 ),
mStream_Buf( 0 ),
mStream_BufSize( inBufSize ),
mStream_BufPos( 0 ),
mStream_Dirty( AB_kFalse ),
mStream_HitEof( AB_kFalse )
{
if ( ev->Good() )
{
if ( inBufSize < ab_Stream_kMinBufSize )
mStream_BufSize = inBufSize = ab_Stream_kMinBufSize;
else if ( inBufSize > ab_Stream_kMaxBufSize )
mStream_BufSize = inBufSize = ab_Stream_kMaxBufSize;
if ( ioContentFile )
{
if ( ioContentFile->FileFrozen() ) // forced to be readonly?
inFrozen = AB_kTrue; // override the input value
if ( ioContentFile->AcquireObject(ev) )
{
mStream_ContentFile = ioContentFile;
ab_u1* buf = (ab_u1*) ev->HeapAlloc(inBufSize);
if ( buf )
{
mStream_At = mStream_Buf = buf;
if ( !inFrozen )
{
// physical buffer end never moves:
mStream_WriteEnd = buf + inBufSize;
}
else
mStream_WriteEnd = 0; // no writing is allowed
if ( inFrozen )
{
// logical buffer end starts at Buf with no content:
mStream_ReadEnd = buf;
this->SetFileFrozen(inFrozen);
}
else
mStream_ReadEnd = 0; // no reading is allowed
this->SetFileActive(AB_kTrue);
this->SetFileIoOpen(AB_kTrue);
}
}
}
else ev->NewAbookFault(ab_Object_kFaultNullObjectParameter);
}
}
void ab_Stream::CloseStream(ab_Env* ev) /*i*/
{
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "CloseStream")
if ( this->FileActive() && mStream_ContentFile && mStream_WriteEnd )
{
if ( mStream_Dirty ) // need to commit buffer changes?
this->Flush(ev); // also flushes the content file
}
ab_Object* obj = mStream_ContentFile;
if ( obj )
{
mStream_ContentFile = 0;
obj->ReleaseObject(ev);
}
void* buf = mStream_Buf;
if ( buf )
{
mStream_Buf = 0;
ev->HeapFree(buf);
}
this->CloseFile(ev);
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` ````` ````` ````` `````
// ````` ````` stdio type methods ````` `````
void ab_Stream::Printf(ab_Env* ev, const char* inFormat, ...) /*i*/
{
ab_File_BeginMethod(this, ev, ab_Stream_kClassName, "Printf")
char buf[ ab_Stream_kPrintBufSize + 2 ];
va_list args;
va_start(args,inFormat);
PR_vsnprintf(buf, ab_Stream_kPrintBufSize, inFormat, args);
va_end(args);
this->PutString(ev, buf);
ab_File_EndMethod(this, ev)
}
// ````` ````` high level i/o operations ````` `````
void ab_Stream::GetDoubleNewlineDelimitedRecord(ab_Env* ev, /*i*/
ab_String* outString)
// GetDoubleNewlineDelimitedRecord() reads a "record" from the stream
// that is intended to correspond to an ldif record in a file being
// imported into an address book. Such records are delimited by two
// (or more) empty lines, where all lines separated by only a single
// empty line are considered part of the record. The record is written
// to outString which grows as necessary to hold the record. (This
// string is first emptied with ab_String::TruncateStringLength(), so
// the string should not be a nonempty static readonly string. The
// same string can easily be used in successive calls to this method
// to avoid any more memory management than it needed.)
//
// Let LF, CR, and BL denote bytes 0xA, 0xD, and 0x20 respectively.
// This method collapses sequences of LF and CR to a single LF because
// this is what ldif parsing code expects to separate lines in each
// ldif record.
//
// UNLIKE the original spec, BLANKS ARE NOT REMOVED, because leading
// blanks are significant to continued line parsing in ldif format.
//
// Counting the number of empty lines
// encountered is made more complex by the need to make the process
// cross platform, where a line-end on various platforms might be a
// single LF or CR, or a combined CRLF. Additionally, ldif files were
// once erroneously written with line-ends composed of CRCRLF, so this
// should count as a single line as well. Otherwise, this method will
// consider two empty lines encountered (thus ending the record) when
// enough LF's and CR's are seen to account for two lines on some
// platform or another. Once either LF or CR is seen, all instances
// of LF, CR, and BL will be consumed from the input stream, but only a
// single LF will be written to the output record string. While this
// white space is being parsed and discarded, the loop decides whether
// more than one line is being seen, which ends the record when true.
//
// This method is intended to be a more efficient way to parse groups
// of lines from an input file than by parsing individual lines which
// then get concatenated together. The performance difference might
// matter for large ldif files, especially when more than one pass must
// be performed on the same input file.
//
// When this method returns, the current file position should point to
// either eof (end of file) or the first byte of the next record.
{
ab_File_BeginMethod(this, ev, ab_Stream_kClassName,
"GetDoubleNewlineDelimitedRecord")
if ( outString->TruncateStringLength(ev, /*len*/ 0) ) // string trimmed?
{
ab_StringSink sink(ev, outString);
if ( ev->Good() )
{
register int c;
while ( (c = this->Getc(ev)) != EOF && ev->Good() )
{
if ( c == 0xA || c == 0xD )
{
sink.Putc(ev, 0xA);
if ( this->consuming_white_space_ends_record(ev, c) )
break; // end while loop at end of record
}
else
sink.Putc(ev, c);
}
if ( ev->Good() )
sink.FlushStringSink(ev);
}
}
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` ````` ````` ````` `````
// protected non-poly high-level support utilities
ab_bool ab_Stream::consuming_white_space_ends_record(ab_Env* ev, /*i*/
register int c)
// Consume the rest of the line ending after a leading 0xA or 0xD
// which is passed in as the value of input argument c. Analyze the
// consumed white space as per the description of public method
// GetDoubleNewlineDelimitedRecord(), and return true if more than
// one line-ending is detected which signals end of record.
//
// UNLIKE the original spec, BLANKS ARE NOT REMOVED, because leading
// blanks are significant to continued line parsing in ldif format.
{
ab_bool outMultipleLineEnds = AB_kFalse;
ab_File_BeginMethod(this, ev, ab_Stream_kClassName,
"consuming_white_space_ends_record")
ab_num countLF = (ab_num) (c == 0xA); // total LF's seen
ab_num countCR = (ab_num) (c == 0xD); // total CR's seen
ab_num countWS = 0; // total other white space seen
while ( (c = this->Getc(ev)) != EOF )
{
if ( ev->Good() ) // no read errors?
{
if ( c == 0xA ) // LF ?
{
++countLF;
}
else if ( c == 0xD ) // CR ?
{
++countCR;
}
// KEEP THE BLANKS because they affect continued line parsing:
// else if ( XP_IS_SPACE(c) ) // other white space?
// {
// ++countWS; // the value of this is currently unused
// }
else // non-white space
{
this->Ungetc(c); // put back non-(LF or CR) characters
break; // end while loop after non-space is seen
}
}
else
{
if ( c != 0xA && c != 0xD && !XP_IS_SPACE(c) )
this->Ungetc(c); // put back non-white space characters
break; // end while loop after any error occurs
}
}
// the following calculation must show CRCRLF as a single line end:
outMultipleLineEnds =
(
( countLF > 1 ) || // more than one LF
( countCR > 2 && countLF ) || // more than just CRCRLF
( !countLF && countCR > 1 ) // no LF, but multiple CR
);
ab_File_EndMethod(this, ev)
return outMultipleLineEnds;
}
/* ===== ===== ===== ===== ab_StringFile ===== ===== ===== ===== */
// ````` ````` ````` ````` ````` ````` ````` `````
// virtual ab_File methods
ab_pos ab_StringFile::Length(ab_Env* ev) const /*i*/
{
ab_pos outLength = 0;
ab_File_BeginMethod(this, ev, ab_StringFile_kClassName, "Length")
if ( this->IsOpenAndActiveFile() && mStringFile_String )
{
outLength = mStringFile_String->GetStringLength();
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outLength;
}
ab_pos ab_StringFile::Tell(ab_Env* ev) const /*i*/
{
ab_pos outTell = 0;
ab_File_BeginMethod(this, ev, ab_StringFile_kClassName, "Tell")
if ( this->IsOpenAndActiveFile() )
{
outTell = mStringFile_Pos;
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outTell;
}
ab_num ab_StringFile::Read(ab_Env* ev, void* outBuf, ab_num inSize) /*i*/
{
ab_num outRead = 0;
ab_File_BeginMethod(this, ev, ab_StringFile_kClassName, "Read")
ab_String* string = mStringFile_String;
if ( this->IsOpenAndActiveFile() && string )
{
ab_pos pos = mStringFile_Pos;
ab_num length = string->GetStringLength();
if ( pos < length ) // any bytes left to read?
{
ab_num remaining = length - pos;
if ( inSize > remaining ) // more bytes requested than remain?
inSize = remaining; // read no more than are left in string
if ( inSize ) // anything to copy?
{
if ( outBuf ) // buffer to receive output?
{
const char* source = string->GetStringContent() + pos;
AB_MEMCPY(outBuf, source, inSize);
mStringFile_Pos += inSize; // advance beyond bytes read
outRead = inSize;
}
else ev->NewAbookFault(ab_File_kFaultNullBuffer);
}
}
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outRead;
}
ab_pos ab_StringFile::Seek(ab_Env* ev, ab_pos inPos) /*i*/
{
ab_pos outSeek = 0;
ab_File_BeginMethod(this, ev, ab_StringFile_kClassName, "Seek")
if ( this->IsOpenOrClosingObject() && this->FileActive() && mStringFile_String )
{
if ( inPos <= mStringFile_String->GetStringLength() )
{
mStringFile_Pos = inPos;
outSeek = inPos;
}
else ev->NewAbookFault(ab_File_kFaultPosBeyondEof);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outSeek;
}
ab_num ab_StringFile::Write(ab_Env* ev, const void* inBuf, ab_num inSize) /*i*/
{
ab_num outWrite = 0;
ab_File_BeginMethod(this, ev, ab_StringFile_kClassName, "Write")
ab_String* string = mStringFile_String;
if ( this->IsOpenActiveAndMutableFile() && string )
{
if ( !this->FileFrozen() ) // file modification allowed?
{
ab_pos pos = mStringFile_Pos;
if ( inSize ) // anything to write?
{
if ( inBuf ) // buffer to provide input?
{
const char* buf = (const char*) inBuf; // void* to char*
if ( string->PutBlockContent(ev, buf, inSize, pos) )
{
mStringFile_Pos += inSize; // go past bytes written
outWrite = inSize;
}
}
else ev->NewAbookFault(ab_File_kFaultNullBuffer);
}
}
else ev->NewAbookFault(ab_File_kFaultFrozen);
}
else this->NewFileDownFault(ev);
ab_File_EndMethod(this, ev)
return outWrite;
}
void ab_StringFile::Flush(ab_Env* ev) /*i*/
{
ab_File_BeginMethod(this, ev, ab_StringFile_kClassName, "Flush")
AB_USED_PARAMS_1(ev);
// do nothing since the string does not need flushing
ab_File_EndMethod(this, ev)
}
// ````` ````` ````` ````` ````` ````` ````` `````
// virtual ab_Object methods
char* ab_StringFile::ObjectAsString(ab_Env* ev, /*i*/
char* outXmlBuf) const
{
AB_USED_PARAMS_1(ev);
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
XP_SPRINTF(outXmlBuf,
"<ab:sting:file:str me=\"^%lX\" sf=\"^%lX\" pos=\"#%lX\" rc=\"%lu\" a=\"%.9s\" u=\"%.9s\"/>",
(long) this, // me=\"^%lX\"
(long) mStringFile_String, // sf=\"^%lX\"
(long) mStringFile_Pos, // pos=\"^%lX\"
(unsigned long) mObject_RefCount, // rc=\"%lu\"
this->GetObjectAccessAsString(), // ac=\"%.9s\"
this->GetObjectUsageAsString() // us=\"%.9s\"
);
#else
*outXmlBuf = 0; /* empty string */
#endif /*AB_CONFIG_TRACE_orDEBUG_orPRINT*/
return outXmlBuf;
}
void ab_StringFile::CloseObject(ab_Env* ev) /*i*/
{
if ( this->IsOpenObject() )
{
this->MarkClosing();
this->CloseStringFile(ev);
this->MarkShut();
}
}
void ab_StringFile::PrintObject(ab_Env* ev, ab_Printer* ioPrinter) const /*i*/
{
#ifdef AB_CONFIG_PRINT
ioPrinter->PutString(ev, "<ab:string:file>");
char xmlBuf[ ab_Object_kXmlBufSize + 2 ];
if ( this->IsOpenObject() )
{
ioPrinter->PushDepth(ev); // indent all objects in the list
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev, this->ObjectAsString(ev, xmlBuf));
if ( mStringFile_String )
{
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev,
mStringFile_String->ObjectAsString(ev, xmlBuf));
}
ioPrinter->PopDepth(ev); // stop indentation
}
else // use ab_Object::ObjectAsString() for non-objects:
{
ioPrinter->PutString(ev, this->ab_Object::ObjectAsString(ev, xmlBuf));
}
ioPrinter->NewlineIndent(ev, /*count*/ 1);
ioPrinter->PutString(ev, "</ab:string:file>");
#else /*AB_CONFIG_PRINT*/
AB_USED_PARAMS_2(ev,ioPrinter);
#endif /*AB_CONFIG_PRINT*/
}
ab_StringFile::~ab_StringFile() /*i*/
{
AB_ASSERT(mStringFile_String==0);
#if AB_CONFIG_TRACE_orDEBUG_orPRINT
ab_Object* obj = mStringFile_String;
if ( obj )
obj->ObjectNotReleasedPanic(ab_StringFile_kClassName);
#endif /*AB_CONFIG_TRACE_orDEBUG_orPRINT*/
}
// ````` ````` ````` ````` ````` ````` ````` `````
// non-poly ab_StringFile methods
ab_StringFile::ab_StringFile(ab_Env* ev, const ab_Usage& inUsage, /*i*/
ab_String* ioString)
: ab_File(inUsage),
mStringFile_String( 0 ),
mStringFile_Pos( 0 )
{
if ( ev->Good() )
{
if ( ioString )
{
if ( ioString->AcquireObject(ev) )
{
if ( ioString->IsStringReadOnly() ) // string is readonly?
this->SetFileFrozen(AB_kTrue); // file is readonly too
mStringFile_String = ioString;
this->SetFileActive(AB_kTrue);
this->SetFileIoOpen(AB_kTrue);
}
}
else ev->NewAbookFault(ab_Object_kFaultNullObjectParameter);
}
}
ab_StringFile::ab_StringFile(ab_Env* ev, const ab_Usage& inUsage, /*i*/
const char* inBytes)
: ab_File(inUsage),
mStringFile_String( 0 ),
mStringFile_Pos( 0 )
{
if ( ev->Good() )
{
ab_String* newString = new(*ev)
ab_String(ev, ab_Usage::kHeap, inBytes);
if ( newString )
{
if ( ev->Good() )
{
this->SetFileFrozen(AB_kTrue); // string and file are readonly
mStringFile_String = newString;
this->SetFileActive(AB_kTrue);
this->SetFileIoOpen(AB_kTrue);
}
else
newString->ReleaseObject(ev);
}
}
}
void ab_StringFile::CloseStringFile(ab_Env* ev) /*i*/
{
ab_File_BeginMethod(this, ev, ab_StringFile_kClassName, "CloseStringFile")
ab_Object* obj = mStringFile_String;
if ( obj )
{
mStringFile_String = 0;
obj->ReleaseObject(ev);
}
this->SetFileActive(AB_kFalse);
this->SetFileIoOpen(AB_kFalse);
ab_File_EndMethod(this, ev)
}
/* ````` ````` ````` C APIs ````` ````` ````` */
/* ````` file refcounting ````` */
AB_API_IMPL(ab_ref_count) /* abstore.cpp */
AB_File_Acquire(AB_File* self, AB_Env* cev) /*i*/
{
ab_ref_count outCount = 0;
ab_Env* ev = ab_Env::AsThis(cev);
ab_Env_BeginMethod(ev, AB_File_kClassName, "Acquire")
outCount = ((ab_File*) self)->AcquireObject(ev);
ab_Env_EndMethod(ev)
return outCount;
}
AB_API_IMPL(ab_ref_count) /* abstore.cpp */
AB_File_Release(AB_File* self, AB_Env* cev) /*i*/
{
ab_ref_count outCount = 0;
ab_Env* ev = ab_Env::AsThis(cev);
ab_Env_BeginMethod(ev, AB_File_kClassName, "Release")
outCount = ((ab_File*) self)->ReleaseObject(ev);
ab_Env_EndMethod(ev)
return outCount;
}