зеркало из https://github.com/mozilla/gecko-dev.git
475 строки
12 KiB
C++
475 строки
12 KiB
C++
/*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is the Mozilla OS/2 libraries.
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*
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* The Initial Developer of the Original Code is John Fairhurst,
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* <john_fairhurst@iname.com>. Portions created by John Fairhurst are
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* Copyright (C) 1998 John Fairhurst. All Rights Reserved.
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*
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* Contributor(s):
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*
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*/
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// This file is #include-d by nsFileSpec.cpp and contains OS/2 specific
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// routines.
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//
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// Let me try & summarise what's going on here:
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//
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// nsFileSpec: "C:\foo\bar\b az.ext"
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//
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// nsFilePath: "/C|/foo/bar/b az.ext"
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//
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// nsFileURL: "file:///C|/foo/bar/b%20az.ext"
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//
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// We don't share the Windoze code 'cos it delves into the Win32 api.
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// When things stabilize, we should push to merge some of the duplicated stuff.
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//
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#define INCL_DOSERRORS
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#define INCL_DOS
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#define INCL_WINWORKPLACE
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#include <os2.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <limits.h>
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#include <ctype.h>
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#include <io.h>
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// General helper routines --------------------------------------------------
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// Takes a "unix path" in the nsFilePath sense, full or relative, and returns
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// the os/2 equivalent.
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//
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// OS/2 [==dos]-style paths are unaffected.
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void nsFileSpecHelpers::UnixToNative( nsSimpleCharString &ioPath)
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{
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if( !ioPath.IsEmpty())
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{
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// Skip any leading slash
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char *c = (char*) ioPath;
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if( '/' == *c)
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{
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nsSimpleCharString tmp = c + 1;
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ioPath = tmp;
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}
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// flip slashes
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for( c = (char*)ioPath; *c; c++)
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if( *c == '/') *c = '\\';
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// do the drive portion
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if( ioPath[1] == '|')
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ioPath[1] = ':';
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// yucky specialcase for drive roots: "H:" is not valid, has to be "H:\"
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if( ioPath[2] == '\0')
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{
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char dl = ioPath[0];
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ioPath = " :\\";
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ioPath[0] = dl;
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}
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}
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}
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// Take a FQPN (os/2-style) and return a "unix path" in the nsFilePath sense
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void nsFileSpecHelpers::NativeToUnix( nsSimpleCharString &ioPath)
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{
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if( !ioPath.IsEmpty())
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{
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// unix path is one character longer
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nsSimpleCharString result( "/");
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result += ioPath;
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// flip slashes
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for( char *c = result; *c; c++)
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if( *c == '\\') *c = '/';
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// colon to pipe
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result[2] = '|';
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ioPath = result;
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}
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}
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// Canonify, make absolute, and check whether directories exist.
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// The path given is a NATIVE path.
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void nsFileSpecHelpers::Canonify( nsSimpleCharString &ioPath, PRBool inMakeDirs)
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{
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PRUint32 lenstr = ioPath.Length();
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if( lenstr)
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{
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char &lastchar = ioPath[lenstr - 1];
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// Strip off any trailing backslash UNLESS it's the backslash that
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// comes after "X:". Note also that "\" is valid. Sheesh.
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//
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if( lastchar == '\\' && (lenstr != 3 || ioPath[1] != ':') && lenstr != 1)
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lastchar = '\0';
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// Canonify path: makes absolute and does the right thing with ".." etc.
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char full_native[ CCHMAXPATH] = "";
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DosQueryPathInfo( (char*) ioPath, FIL_QUERYFULLNAME,
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full_native, CCHMAXPATH);
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ioPath = full_native;
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// if required, make directories.
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if( inMakeDirs)
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{
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nsSimpleCharString unix_path( ioPath);
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nsFileSpecHelpers::NativeToUnix( unix_path);
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nsFileSpecHelpers::MakeAllDirectories( unix_path, 0700 /* hmm */);
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}
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}
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}
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// nsFileSpec <-> nsFilePath ------------------------------------------------
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// We assume that input is valid. Garbage in, garbage out.
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void nsFileSpec::operator = ( const nsFilePath &inPath)
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{
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mPath = (const char*) inPath;
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nsFileSpecHelpers::UnixToNative( mPath);
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}
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void nsFilePath::operator = ( const nsFileSpec &inSpec)
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{
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mPath = inSpec.mPath;
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nsFileSpecHelpers::NativeToUnix(mPath);
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}
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// nsFilePath constructor
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nsFilePath::nsFilePath( const nsFileSpec &inSpec)
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: mPath(0)
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{
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*this = inSpec;
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}
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// nsFileSpec implementation ------------------------------------------
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nsFileSpec::nsFileSpec( const nsFilePath &inPath) : mPath(0)
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{
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*this = inPath;
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}
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void nsFileSpec::SetLeafName( const char *inLeafName)
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{
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mPath.LeafReplace( '\\', inLeafName);
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}
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char *nsFileSpec::GetLeafName() const
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{
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return mPath.GetLeaf( '\\');
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}
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PRBool nsFileSpec::Exists() const
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{
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struct stat st;
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return 0 == stat( mPath, &st);
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}
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// These stat tests are done somewhat verbosely 'cos the VACPP version
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// of sys/stat.h is sadly lacking in #defines.
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PRBool nsFileSpec::IsFile() const
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{
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struct stat st;
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return (0 == stat( mPath, &st)) && (S_IFREG == (st.st_mode & S_IFREG));
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}
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PRBool nsFileSpec::IsDirectory() const
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{
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struct stat st;
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return (0 == stat( mPath, &st)) && (S_IFDIR == (st.st_mode & S_IFDIR));
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}
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// Really should factor out DosQPI() call to an internal GetFS3() method and then use
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// here, in IsDirectory(), IsFile(), GetModDate(), GetFileSize() [and a future IsReadOnly()]
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// and lose the clumsy stat() calls. Exists() too.
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PRBool nsFileSpec::IsHidden() const
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{
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FILESTATUS3 fs3;
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APIRET rc;
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PRBool bHidden = PR_FALSE; // XXX how do I return an error?
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rc = DosQueryPathInfo( mPath, FIL_STANDARD, &fs3, sizeof fs3);
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if( !rc)
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bHidden = fs3.attrFile & FILE_HIDDEN ? PR_TRUE : PR_FALSE;
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return bHidden;
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}
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// On FAT or HPFS there's no such thing as a symlink; it's possible that JFS
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// (new with Warp Server for e-business) does know what they are. Someone
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// with a recent toolkit should check it out, but this will be OK for now.
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PRBool nsFileSpec::IsSymlink() const
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{
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return PR_FALSE;
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}
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nsresult nsFileSpec::ResolveSymlink(PRBool& wasAliased)
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{
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return NS_OK;
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}
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void nsFileSpec::GetModDate( TimeStamp& outStamp) const
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{
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struct stat st;
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if( stat( mPath, &st) == 0)
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outStamp = st.st_mtime;
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else
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outStamp = 0;
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}
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PRUint32 nsFileSpec::GetFileSize() const
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{
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struct stat st;
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PRUint32 size = 0;
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if( stat( mPath, &st) == 0)
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size = (PRUint32) st.st_size;
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return size;
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}
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// Okay, this is a really weird place to put this method!
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// And it ought to return a PRInt64.
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//
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PRInt64 nsFileSpec::GetDiskSpaceAvailable() const
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{
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ULONG ulDriveNo = toupper(mPath[0]) + 1 - 'A';
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FSALLOCATE fsAllocate = { 0 };
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APIRET rc = NO_ERROR;
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PRUint32 cbAvail = UINT_MAX; // XXX copy windows...
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rc = DosQueryFSInfo( ulDriveNo, FSIL_ALLOC,
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&fsAllocate, sizeof fsAllocate);
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if( NO_ERROR == rc)
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{
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// XXX check for overflows and do UINT_MAX if necessary
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cbAvail = fsAllocate.cUnitAvail *
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fsAllocate.cSectorUnit *
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fsAllocate.cbSector;
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}
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PRInt64 int64;
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LL_I2L(int64 , cbAvail);
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return int64;
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}
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void nsFileSpec::GetParent( nsFileSpec &outSpec) const
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{
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outSpec.mPath = mPath;
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char *slash = strrchr( (char *) outSpec.mPath, '\\'); // XXX wrong for dbcs
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if( slash)
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*slash = '\0';
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}
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void nsFileSpec::operator += ( const char *inRelativePath)
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{
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if( !inRelativePath || mPath.IsEmpty())
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return;
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if( mPath[mPath.Length() - 1] == '\\')
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mPath += "x";
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else
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mPath +="\\x";
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// If it's a (unix) relative path, make it native
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nsSimpleCharString relPath = inRelativePath;
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nsFileSpecHelpers::UnixToNative( relPath);
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SetLeafName( relPath);
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}
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void nsFileSpec::CreateDirectory( int /*mode*/)
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{
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// Note that mPath is canonical.
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// This means that all directories above us are meant to exist.
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PR_MkDir( mPath, PR_CREATE_FILE);
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}
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void nsFileSpec::Delete( PRBool inRecursive) const
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{
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// Un-readonly ourselves
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chmod( mPath, S_IREAD | S_IWRITE);
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if( IsDirectory())
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{
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if( inRecursive)
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{
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for( nsDirectoryIterator i(*this, PR_FALSE); i.Exists(); i++)
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{
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nsFileSpec &child = (nsFileSpec &) i;
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child.Delete( inRecursive);
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}
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}
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PR_RmDir( mPath);
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}
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else
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{
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PR_Delete( mPath);
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}
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}
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// XXX what format is this string? Who knows!
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nsresult nsFileSpec::Rename( const char *inNewName)
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{
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nsresult rc = NS_FILE_FAILURE;
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if( inNewName == nsnull)
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rc = NS_ERROR_NULL_POINTER;
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else if( !strchr( inNewName, '/') && !strchr( inNewName, '\\')) // XXX DBCS
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{
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// PR_Rename just calls DosMove() on what you give it.
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char *aLocal = PL_strdup( mPath);
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SetLeafName( inNewName);
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APIRET ret = DosMove( aLocal, (const char*) mPath);
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if( NO_ERROR == ret)
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{
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delete [] aLocal;
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rc = NS_OK;
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}
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else
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{
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#ifdef DEBUG
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printf( "DosMove %s %s returned %d\n", (char*)mPath, aLocal, ret);
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#endif
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mPath = aLocal;
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}
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}
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return rc;
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}
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nsresult nsFileSpec::CopyToDir( const nsFileSpec &inParentDirectory) const
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{
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// Copy the file this filespec represents into the given directory.
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nsresult rc = NS_FILE_FAILURE;
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if( !IsDirectory() && inParentDirectory.IsDirectory())
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{
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char *myLeaf = GetLeafName();
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nsSimpleCharString copyTo( inParentDirectory.GetCString());
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copyTo += "\\";
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copyTo += myLeaf;
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delete [] myLeaf;
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APIRET ret = DosCopy( (const char*) mPath, (const char*) copyTo, DCPY_EXISTING);
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if( NO_ERROR == ret)
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rc = NS_OK;
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#ifdef DEBUG
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else
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printf( "DosCopy %s %s returned %dl\n",
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(const char*) mPath, (const char*) copyTo, ret);
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#endif
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}
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return rc;
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}
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// XXX not sure about the semantics of this method...
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nsresult nsFileSpec::MoveToDir( const nsFileSpec &aParentDirectory)
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{
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// Copy first & then delete self to avoid drive-clashes
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nsresult rc = CopyToDir( aParentDirectory);
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if( NS_SUCCEEDED(rc))
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{
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Delete( PR_FALSE); // XXX why no return code ?
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*this = aParentDirectory + GetLeafName();
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}
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return rc;
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}
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nsresult nsFileSpec::Execute( const char *inArgs) const
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{
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// Running arbitrary programs in OS/2 seems soooo hard: getting a single
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// routine which deals correctly with PM, VIO, DOS & various Win 3.1
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// types would be so nice.
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//
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// The method here looks quite elegant, but makes me shiver with
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// unease: we create a new program object for the program and its
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// parameters, get the shell to open it, and then destroy the object.
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//
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// I can't get either DosStartSession() or WinStartApp() to open
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// all types of thing, including varieties of Win3.1 programs.
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//
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nsresult rc = NS_FILE_FAILURE;
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char setupstring[ CCHMAXPATH * 2];
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sprintf( setupstring, "EXENAME=%s;PARAMETERS=%s;CCVIEW=NO",
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(const char *)mPath, inArgs);
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HOBJECT hObject = WinCreateObject( "WPProgram", "Title", setupstring,
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"<WP_NOWHERE>", CO_UPDATEIFEXISTS);
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if( 0 != hObject)
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{
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// Doing this twice gives focus to the opened object.
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// (no, this doesn't alter the object's settings - there's rather
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// unexpected hackery in wpSetup)
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WinSetObjectData( hObject, "OPEN=DEFAULT");
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WinSetObjectData( hObject, "OPEN=DEFAULT");
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WinDestroyObject( hObject);
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rc = NS_OK;
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}
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return rc;
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}
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// nsDirectoryIterator ------------------------------------------------------
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nsDirectoryIterator::nsDirectoryIterator( const nsFileSpec &aDirectory,
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PRBool resolveSymlinks)
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: mCurrent( aDirectory),
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mDir( nsnull),
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mExists(PR_FALSE),
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mResoveSymLinks(resolveSymlinks)
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{
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mDir = PR_OpenDir( aDirectory);
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mCurrent += "dummy";
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++(*this);
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}
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nsDirectoryIterator::~nsDirectoryIterator()
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{
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if( mDir)
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PR_CloseDir( mDir);
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}
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nsDirectoryIterator &nsDirectoryIterator::operator ++ ()
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{
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mExists = PR_FALSE;
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if( !mDir)
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return *this;
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PRDirEntry *entry = PR_ReadDir( mDir, PR_SKIP_BOTH);
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if( entry)
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{
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mExists = PR_TRUE;
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mCurrent.SetLeafName( entry->name);
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if (mResoveSymLinks)
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{
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PRBool ignore;
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mCurrent.ResolveSymlink(ignore);
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}
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}
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return *this;
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}
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nsDirectoryIterator& nsDirectoryIterator::operator -- ()
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{
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return ++(*this); // can't go backwards without much pain & suffering.
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}
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