nsFileSpecWin.cpp@ 1

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1	/* -- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -- */
2	/* *** BEGIN LICENSE BLOCK ***
3	* Version: MPL 1.1/GPL 2.0/LGPL 2.1
4	*
5	* The contents of this file are subject to the Mozilla Public License Version
6	* 1.1 (the "License"); you may not use this file except in compliance with
7	* the License. You may obtain a copy of the License at
8	* http://www.mozilla.org/MPL/
9	*
10	* Software distributed under the License is distributed on an "AS IS" basis,
11	* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12	* for the specific language governing rights and limitations under the
13	* License.
14	*
15	* The Original Code is mozilla.org code.
16	*
17	* The Initial Developer of the Original Code is
18	* Netscape Communications Corporation.
19	* Portions created by the Initial Developer are Copyright (C) 1998
20	* the Initial Developer. All Rights Reserved.
21	*
22	* Contributor(s):
23	*
24	* Alternatively, the contents of this file may be used under the terms of
25	* either of the GNU General Public License Version 2 or later (the "GPL"),
26	* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27	* in which case the provisions of the GPL or the LGPL are applicable instead
28	* of those above. If you wish to allow use of your version of this file only
29	* under the terms of either the GPL or the LGPL, and not to allow others to
30	* use your version of this file under the terms of the MPL, indicate your
31	* decision by deleting the provisions above and replace them with the notice
32	* and other provisions required by the GPL or the LGPL. If you do not delete
33	* the provisions above, a recipient may use your version of this file under
34	* the terms of any one of the MPL, the GPL or the LGPL.
35	*
36	* *** END LICENSE BLOCK *** */
37
38	// This file is included by nsFileSpec.cp, and includes the Windows-specific
39	// implementations.
40
41	#include <sys/stat.h>
42	#include <direct.h>
43	#include <limits.h>
44	#include <stdlib.h>
45	#include "prio.h"
46	#include "nsError.h"
47
48	#include <windows.h>
49
50	#if (_MSC_VER == 1100) \|\| defined(__GNUC__)
51	#define INITGUID
52	#include <objbase.h>
53	DEFINE_OLEGUID(IID_IPersistFile, 0x0000010BL, 0, 0);
54	#endif
55
56	#include <shlobj.h>
57	#include <shellapi.h>
58	#include <shlguid.h>
59
60	#ifdef UNICODE
61	#define CreateDirectoryW CreateDirectory
62	#else
63	#define CreateDirectoryA CreateDirectory
64	#endif
65
66	//----------------------------------------------------------------------------------------
67	void nsFileSpecHelpers::Canonify(nsSimpleCharString& ioPath, PRBool inMakeDirs)
68	// Canonify, make absolute, and check whether directories exist. This
69	// takes a (possibly relative) native path and converts it into a
70	// fully qualified native path.
71	//----------------------------------------------------------------------------------------
72	{
73	if (ioPath.IsEmpty())
74	return;
75
76	NS_ASSERTION(strchr((const char*)ioPath, '/') == 0,
77	"This smells like a Unix path. Native path expected! "
78	"Please fix.");
79	if (inMakeDirs)
80	{
81	const int mode = 0755;
82	nsSimpleCharString unixStylePath = ioPath;
83	nsFileSpecHelpers::NativeToUnix(unixStylePath);
84	nsFileSpecHelpers::MakeAllDirectories((const char*)unixStylePath, mode);
85	}
86	char buffer[_MAX_PATH];
87	errno = 0;
88	*buffer = '\0';
89	char* canonicalPath = _fullpath(buffer, ioPath, _MAX_PATH);
90
91	if (canonicalPath)
92	{
93	NS_ASSERTION( canonicalPath[0] != '\0', "Uh oh...couldn't convert" );
94	if (canonicalPath[0] == '\0')
95	return;
96	}
97	ioPath = canonicalPath;
98	} // nsFileSpecHelpers::Canonify
99
100	//----------------------------------------------------------------------------------------
101	void nsFileSpecHelpers::UnixToNative(nsSimpleCharString& ioPath)
102	// This just does string manipulation. It doesn't check reality, or canonify, or
103	// anything
104	//----------------------------------------------------------------------------------------
105	{
106	// Allow for relative or absolute. We can do this in place, because the
107	// native path is never longer.
108
109	if (ioPath.IsEmpty())
110	return;
111
112	// Strip initial slash for an absolute path
113	char* src = (char*)ioPath;
114	if (*src == '/') {
115	if (!src[1]) {
116	// allocate new string by copying from ioPath[1]
117	nsSimpleCharString temp = src + 1;
118	ioPath = temp;
119	return;
120	}
121	// Since it was an absolute path, check for the drive letter
122	char* colonPointer = src + 2;
123	if (strstr(src, "\|/") == colonPointer)
124	*colonPointer = ':';
125	// allocate new string by copying from ioPath[1]
126	nsSimpleCharString temp = src + 1;
127	ioPath = temp;
128	}
129
130	// Convert '/' to '\'. (Must check EVERY character: consider UNC path
131	// case.)
132	for (src = (char)ioPath; src; ++src)
133	{
134	if (*src == '/')
135	*src = '\\';
136	}
137
138	} // nsFileSpecHelpers::UnixToNative
139
140	//----------------------------------------------------------------------------------------
141	void nsFileSpecHelpers::NativeToUnix(nsSimpleCharString& ioPath)
142	// This just does string manipulation. It doesn't check reality, or canonify, or
143	// anything. The unix path is longer, so we can't do it in place.
144	//----------------------------------------------------------------------------------------
145	{
146	if (ioPath.IsEmpty())
147	return;
148
149	// Convert the drive-letter separator, if present
150	nsSimpleCharString temp("/");
151
152	char* cp = (char*)ioPath + 1;
153	if (strstr(cp, ":\\") == cp)
154	*cp = '\|'; // absolute path
155	else
156	if (cp[0] == '\\') // unc path
157	cp--;
158	else
159	temp[0] = '\0'; // relative path
160
161	// Convert '\' to '/'
162	for (; *cp; cp++)
163	{
164	if(IsDBCSLeadByte(cp) && (cp+1) != nsnull)
165	{
166	cp++;
167	continue;
168	}
169	if (*cp == '\\')
170	*cp = '/';
171	}
172	// Add the slash in front.
173	temp += ioPath;
174	ioPath = temp;
175	}
176
177	//----------------------------------------------------------------------------------------
178	nsFileSpec::nsFileSpec(const nsFilePath& inPath)
179	//----------------------------------------------------------------------------------------
180	{
181	// NS_ASSERTION(0, "nsFileSpec is unsupported - use nsIFile!");
182	*this = inPath;
183	}
184
185	//----------------------------------------------------------------------------------------
186	void nsFileSpec::operator = (const nsFilePath& inPath)
187	//----------------------------------------------------------------------------------------
188	{
189	mPath = (const char*)inPath;
190	nsFileSpecHelpers::UnixToNative(mPath);
191	mError = NS_OK;
192	} // nsFileSpec::operator =
193
194	//----------------------------------------------------------------------------------------
195	nsFilePath::nsFilePath(const nsFileSpec& inSpec)
196	//----------------------------------------------------------------------------------------
197	{
198	*this = inSpec;
199	} // nsFilePath::nsFilePath
200
201	//----------------------------------------------------------------------------------------
202	void nsFilePath::operator = (const nsFileSpec& inSpec)
203	//----------------------------------------------------------------------------------------
204	{
205	mPath = inSpec.mPath;
206	nsFileSpecHelpers::NativeToUnix(mPath);
207	} // nsFilePath::operator =
208
209	//----------------------------------------------------------------------------------------
210	void nsFileSpec::SetLeafName(const char* inLeafName)
211	//----------------------------------------------------------------------------------------
212	{
213	NS_ASSERTION(inLeafName, "Attempt to SetLeafName with a null string");
214	mPath.LeafReplace('\\', inLeafName);
215	} // nsFileSpec::SetLeafName
216
217	//----------------------------------------------------------------------------------------
218	char* nsFileSpec::GetLeafName() const
219	//----------------------------------------------------------------------------------------
220	{
221	return mPath.GetLeaf('\\');
222	} // nsFileSpec::GetLeafName
223
224	//----------------------------------------------------------------------------------------
225	PRBool nsFileSpec::Exists() const
226	//----------------------------------------------------------------------------------------
227	{
228	struct stat st;
229	return !mPath.IsEmpty() && 0 == stat(nsNSPRPath(*this), &st);
230	} // nsFileSpec::Exists
231
232	//----------------------------------------------------------------------------------------
233	void nsFileSpec::GetModDate(TimeStamp& outStamp) const
234	//----------------------------------------------------------------------------------------
235	{
236	struct stat st;
237	if (!mPath.IsEmpty() && stat(nsNSPRPath(*this), &st) == 0)
238	outStamp = st.st_mtime;
239	else
240	outStamp = 0;
241	} // nsFileSpec::GetModDate
242
243	//----------------------------------------------------------------------------------------
244	PRUint32 nsFileSpec::GetFileSize() const
245	//----------------------------------------------------------------------------------------
246	{
247	struct stat st;
248	if (!mPath.IsEmpty() && stat(nsNSPRPath(*this), &st) == 0)
249	return (PRUint32)st.st_size;
250	return 0;
251	} // nsFileSpec::GetFileSize
252
253	//----------------------------------------------------------------------------------------
254	PRBool nsFileSpec::IsFile() const
255	//----------------------------------------------------------------------------------------
256	{
257	struct stat st;
258	return !mPath.IsEmpty() && 0 == stat(nsNSPRPath(*this), &st) && (_S_IFREG & st.st_mode);
259	} // nsFileSpec::IsFile
260
261	//----------------------------------------------------------------------------------------
262	PRBool nsFileSpec::IsDirectory() const
263	//----------------------------------------------------------------------------------------
264	{
265	struct stat st;
266	return !mPath.IsEmpty() && 0 == stat(nsNSPRPath(*this), &st) && (_S_IFDIR & st.st_mode);
267	} // nsFileSpec::IsDirectory
268
269	//----------------------------------------------------------------------------------------
270	PRBool nsFileSpec::IsHidden() const
271	//----------------------------------------------------------------------------------------
272	{
273	PRBool hidden = PR_FALSE;
274	if (!mPath.IsEmpty())
275	{
276	DWORD attr = GetFileAttributes(mPath);
277	if (FILE_ATTRIBUTE_HIDDEN & attr)
278	hidden = PR_TRUE;
279	}
280	return hidden;
281	}
282	// nsFileSpec::IsHidden
283
284	//----------------------------------------------------------------------------------------
285	PRBool nsFileSpec::IsSymlink() const
286	//----------------------------------------------------------------------------------------
287	{
288	HRESULT hres;
289	IShellLink* psl;
290
291	PRBool isSymlink = PR_FALSE;
292
293	CoInitialize(NULL);
294	// Get a pointer to the IShellLink interface.
295	hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (void**)&psl);
296	if (SUCCEEDED(hres))
297	{
298	IPersistFile* ppf;
299
300	// Get a pointer to the IPersistFile interface.
301	hres = psl->QueryInterface(IID_IPersistFile, (void**)&ppf);
302
303	if (SUCCEEDED(hres))
304	{
305	WCHAR wsz[MAX_PATH];
306	// Ensure that the string is Unicode.
307	MultiByteToWideChar(CP_ACP, 0, mPath, -1, wsz, MAX_PATH);
308
309	// Load the shortcut.
310	hres = ppf->Load(wsz, STGM_READ);
311	if (SUCCEEDED(hres))
312	{
313	isSymlink = PR_TRUE;
314	}
315
316	// Release the pointer to the IPersistFile interface.
317	ppf->Release();
318	}
319
320	// Release the pointer to the IShellLink interface.
321	psl->Release();
322	}
323
324	CoUninitialize();
325
326	return isSymlink;
327	}
328
329
330	//----------------------------------------------------------------------------------------
331	nsresult nsFileSpec::ResolveSymlink(PRBool& wasSymlink)
332	//----------------------------------------------------------------------------------------
333	{
334	wasSymlink = PR_FALSE; // assume failure
335
336	if (Exists())
337	return NS_OK;
338
339
340	HRESULT hres;
341	IShellLink* psl;
342
343	CoInitialize(NULL);
344
345	// Get a pointer to the IShellLink interface.
346	hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER, IID_IShellLink, (void**)&psl);
347	if (SUCCEEDED(hres))
348	{
349	IPersistFile* ppf;
350
351	// Get a pointer to the IPersistFile interface.
352	hres = psl->QueryInterface(IID_IPersistFile, (void**)&ppf);
353
354	if (SUCCEEDED(hres))
355	{
356	WCHAR wsz[MAX_PATH];
357	// Ensure that the string is Unicode.
358	MultiByteToWideChar(CP_ACP, 0, mPath, -1, wsz, MAX_PATH);
359
360	// Load the shortcut.
361	hres = ppf->Load(wsz, STGM_READ);
362	if (SUCCEEDED(hres))
363	{
364	wasSymlink = PR_TRUE;
365
366	// Resolve the link.
367	hres = psl->Resolve(nsnull, SLR_NO_UI );
368	if (SUCCEEDED(hres))
369	{
370	char szGotPath[MAX_PATH];
371	WIN32_FIND_DATA wfd;
372
373	// Get the path to the link target.
374	hres = psl->GetPath( szGotPath, MAX_PATH, &wfd, SLGP_UNCPRIORITY );
375
376	if (SUCCEEDED(hres))
377	{
378	// Here we modify the nsFileSpec;
379	mPath = szGotPath;
380	mError = NS_OK;
381	}
382	}
383	}
384	else {
385	// It wasn't a shortcut. Oh well. Leave it like it was.
386	hres = 0;
387	}
388
389	// Release the pointer to the IPersistFile interface.
390	ppf->Release();
391	}
392	// Release the pointer to the IShellLink interface.
393	psl->Release();
394	}
395
396	CoUninitialize();
397
398	if (SUCCEEDED(hres))
399	return NS_OK;
400
401	return NS_FILE_FAILURE;
402	}
403
404
405
406	//----------------------------------------------------------------------------------------
407	void nsFileSpec::GetParent(nsFileSpec& outSpec) const
408	//----------------------------------------------------------------------------------------
409	{
410	outSpec.mPath = mPath;
411	char* chars = (char*)outSpec.mPath;
412	chars[outSpec.mPath.Length() - 1] = '\0'; // avoid trailing separator, if any
413	char* cp = strrchr(chars, '\\');
414	if (cp++)
415	outSpec.mPath.SetLength(cp - chars); // truncate.
416	} // nsFileSpec::GetParent
417
418	//----------------------------------------------------------------------------------------
419	void nsFileSpec::operator += (const char* inRelativePath)
420	//----------------------------------------------------------------------------------------
421	{
422	NS_ASSERTION(inRelativePath, "Attempt to do += with a null string");
423
424	if (!inRelativePath \|\| mPath.IsEmpty())
425	return;
426
427	if (mPath[mPath.Length() - 1] == '\\')
428	mPath += "x";
429	else
430	mPath += "\\x";
431
432	// If it's a (unix) relative path, make it native
433	nsSimpleCharString dosPath = inRelativePath;
434	nsFileSpecHelpers::UnixToNative(dosPath);
435	SetLeafName(dosPath);
436	} // nsFileSpec::operator +=
437
438	//----------------------------------------------------------------------------------------
439	void nsFileSpec::CreateDirectory(int /mode/)
440	//----------------------------------------------------------------------------------------
441	{
442	// Note that mPath is canonical!
443	if (!mPath.IsEmpty())
444	mkdir(nsNSPRPath(*this));
445	} // nsFileSpec::CreateDirectory
446
447	//----------------------------------------------------------------------------------------
448	void nsFileSpec::Delete(PRBool inRecursive) const
449	//----------------------------------------------------------------------------------------
450	{
451	if (IsDirectory())
452	{
453	if (inRecursive)
454	{
455	for (nsDirectoryIterator i(*this, PR_FALSE); i.Exists(); i++)
456	{
457	nsFileSpec& child = (nsFileSpec&)i;
458	child.Delete(inRecursive);
459	}
460	}
461	rmdir(nsNSPRPath(*this));
462	}
463	else if (!mPath.IsEmpty())
464	{
465	remove(nsNSPRPath(*this));
466	}
467	} // nsFileSpec::Delete
468
469
470	//----------------------------------------------------------------------------------------
471	void nsFileSpec::RecursiveCopy(nsFileSpec newDir) const
472	//----------------------------------------------------------------------------------------
473	{
474	if (IsDirectory())
475	{
476	if (!(newDir.Exists()))
477	{
478	newDir.CreateDirectory();
479	}
480
481	for (nsDirectoryIterator i(*this, PR_FALSE); i.Exists(); i++)
482	{
483	nsFileSpec& child = (nsFileSpec&)i;
484
485	if (child.IsDirectory())
486	{
487	nsFileSpec tmpDirSpec(newDir);
488
489	char *leafname = child.GetLeafName();
490	tmpDirSpec += leafname;
491	nsCRT::free(leafname);
492
493	child.RecursiveCopy(tmpDirSpec);
494	}
495	else
496	{
497	child.RecursiveCopy(newDir);
498	}
499	}
500	}
501	else if (!mPath.IsEmpty())
502	{
503	nsFileSpec& filePath = (nsFileSpec&) *this;
504
505	if (!(newDir.Exists()))
506	{
507	newDir.CreateDirectory();
508	}
509
510	filePath.CopyToDir(newDir);
511	}
512	} // nsFileSpec::RecursiveCopy
513
514	//----------------------------------------------------------------------------------------
515	nsresult
516	nsFileSpec::Truncate(PRInt32 aNewFileLength) const
517	//----------------------------------------------------------------------------------------
518	{
519	DWORD status;
520	HANDLE hFile;
521
522	// Leave it to Microsoft to open an existing file with a function
523	// named "CreateFile".
524	hFile = CreateFile(mPath,
525	GENERIC_WRITE,
526	FILE_SHARE_READ,
527	NULL,
528	OPEN_EXISTING,
529	FILE_ATTRIBUTE_NORMAL,
530	NULL);
531	if (hFile == INVALID_HANDLE_VALUE)
532	return NS_FILE_FAILURE;
533
534	// Seek to new, desired end of file
535	status = SetFilePointer(hFile, aNewFileLength, NULL, FILE_BEGIN);
536	if (status == 0xffffffff)
537	goto error;
538
539	// Truncate file at current cursor position
540	if (!SetEndOfFile(hFile))
541	goto error;
542
543	if (!CloseHandle(hFile))
544	return NS_FILE_FAILURE;
545
546	return NS_OK;
547
548	error:
549	CloseHandle(hFile);
550	return NS_FILE_FAILURE;
551
552	} // nsFileSpec::Truncate
553
554	//----------------------------------------------------------------------------------------
555	nsresult nsFileSpec::Rename(const char* inNewName)
556	//----------------------------------------------------------------------------------------
557	{
558	NS_ASSERTION(inNewName, "Attempt to Rename with a null string");
559
560	// This function should not be used to move a file on disk.
561	if (strchr(inNewName, '/'))
562	return NS_FILE_FAILURE;
563
564	char* oldPath = nsCRT::strdup(mPath);
565
566	SetLeafName(inNewName);
567
568	if (PR_Rename(oldPath, mPath) != NS_OK)
569	{
570	// Could not rename, set back to the original.
571	mPath = oldPath;
572	return NS_FILE_FAILURE;
573	}
574
575	nsCRT::free(oldPath);
576
577	return NS_OK;
578	} // nsFileSpec::Rename
579
580	//----------------------------------------------------------------------------------------
581	nsresult nsFileSpec::CopyToDir(const nsFileSpec& inParentDirectory) const
582	//----------------------------------------------------------------------------------------
583	{
584	// We can only copy into a directory, and (for now) can not copy entire directories
585	if (inParentDirectory.IsDirectory() && (! IsDirectory() ) )
586	{
587	char *leafname = GetLeafName();
588	nsSimpleCharString destPath(inParentDirectory.GetCString());
589	destPath += "\\";
590	destPath += leafname;
591	nsCRT::free(leafname);
592
593	// CopyFile returns non-zero if succeeds
594	int copyOK = CopyFile(GetCString(), destPath, PR_TRUE);
595	if (copyOK)
596	return NS_OK;
597	}
598	return NS_FILE_FAILURE;
599	} // nsFileSpec::CopyToDir
600
601	//----------------------------------------------------------------------------------------
602	nsresult nsFileSpec::MoveToDir(const nsFileSpec& inNewParentDirectory)
603	//----------------------------------------------------------------------------------------
604	{
605	// We can only copy into a directory, and (for now) can not copy entire directories
606	if (inNewParentDirectory.IsDirectory() && (! IsDirectory() ) )
607	{
608	char *leafname = GetLeafName();
609	nsSimpleCharString destPath(inNewParentDirectory.GetCString());
610	destPath += "\\";
611	destPath += leafname;
612	nsCRT::free(leafname);
613
614	// MoveFile returns non-zero if succeeds
615	int copyOK = MoveFile(GetCString(), destPath);
616
617	if (copyOK)
618	{
619	*this = inNewParentDirectory + GetLeafName();
620	return NS_OK;
621	}
622
623	}
624	return NS_FILE_FAILURE;
625	} // nsFileSpec::MoveToDir
626
627	//----------------------------------------------------------------------------------------
628	nsresult nsFileSpec::Execute(const char* inArgs ) const
629	//----------------------------------------------------------------------------------------
630	{
631	if (!IsDirectory())
632	{
633	nsSimpleCharString fileNameWithArgs = "\"";
634	fileNameWithArgs += mPath + "\" " + inArgs;
635	int execResult = WinExec( fileNameWithArgs, SW_NORMAL );
636	if (execResult > 31)
637	return NS_OK;
638	}
639	return NS_FILE_FAILURE;
640	} // nsFileSpec::Execute
641
642
643	//----------------------------------------------------------------------------------------
644	PRInt64 nsFileSpec::GetDiskSpaceAvailable() const
645	//----------------------------------------------------------------------------------------
646	{
647	PRInt64 int64;
648
649	LL_I2L(int64 , LONG_MAX);
650
651	char aDrive[_MAX_DRIVE + 2];
652	_splitpath( (const char*)mPath, aDrive, NULL, NULL, NULL);
653
654	if (aDrive[0] == '\0')
655	{
656	// The back end is always trying to pass us paths that look
657	// like /c\|/netscape/mail. See if we've got one of them
658	if (mPath.Length() > 2 && mPath[0] == '/' && mPath[2] == '\|')
659	{
660	aDrive[0] = mPath[1];
661	aDrive[1] = ':';
662	aDrive[2] = '\0';
663	}
664	else
665	{
666	// Return bogus large number and hope for the best
667	return int64;
668	}
669	}
670
671	strcat(aDrive, "\\");
672
673	// Check disk space
674	DWORD dwSecPerClus, dwBytesPerSec, dwFreeClus, dwTotalClus;
675	ULARGE_INTEGER liFreeBytesAvailableToCaller, liTotalNumberOfBytes, liTotalNumberOfFreeBytes;
676	double nBytes = 0;
677
678	BOOL (WINAPI* getDiskFreeSpaceExA)(LPCTSTR lpDirectoryName,
679	PULARGE_INTEGER lpFreeBytesAvailableToCaller,
680	PULARGE_INTEGER lpTotalNumberOfBytes,
681	PULARGE_INTEGER lpTotalNumberOfFreeBytes) = NULL;
682
683	HINSTANCE hInst = LoadLibrary("KERNEL32.DLL");
684	NS_ASSERTION(hInst != NULL, "COULD NOT LOAD KERNEL32.DLL");
685	if (hInst != NULL)
686	{
687	getDiskFreeSpaceExA = (BOOL (WINAPI*)(LPCTSTR lpDirectoryName,
688	PULARGE_INTEGER lpFreeBytesAvailableToCaller,
689	PULARGE_INTEGER lpTotalNumberOfBytes,
690	PULARGE_INTEGER lpTotalNumberOfFreeBytes))
691	GetProcAddress(hInst, "GetDiskFreeSpaceExA");
692	FreeLibrary(hInst);
693	}
694
695	if (getDiskFreeSpaceExA && (*getDiskFreeSpaceExA)(aDrive,
696	&liFreeBytesAvailableToCaller,
697	&liTotalNumberOfBytes,
698	&liTotalNumberOfFreeBytes))
699	{
700	nBytes = (double)(signed __int64)liFreeBytesAvailableToCaller.QuadPart;
701	}
702	else if ( GetDiskFreeSpace(aDrive, &dwSecPerClus, &dwBytesPerSec, &dwFreeClus, &dwTotalClus))
703	{
704	nBytes = (double)dwFreeClus(double)dwSecPerClus(double) dwBytesPerSec;
705	}
706	return (PRInt64)nBytes;
707	}
708
709
710
711	//========================================================================================
712	// nsDirectoryIterator
713	//========================================================================================
714
715	//----------------------------------------------------------------------------------------
716	nsDirectoryIterator::nsDirectoryIterator(const nsFileSpec& inDirectory, PRBool resolveSymlink)
717	//----------------------------------------------------------------------------------------
718	: mCurrent(inDirectory)
719	, mDir(nsnull)
720	, mStarting(inDirectory)
721	, mExists(PR_FALSE)
722	, mResoveSymLinks(resolveSymlink)
723	{
724	mDir = PR_OpenDir(inDirectory);
725	mCurrent += "dummy";
726	mStarting += "dummy";
727	++(*this);
728	} // nsDirectoryIterator::nsDirectoryIterator
729
730	//----------------------------------------------------------------------------------------
731	nsDirectoryIterator::~nsDirectoryIterator()
732	//----------------------------------------------------------------------------------------
733	{
734	if (mDir)
735	PR_CloseDir(mDir);
736	} // nsDirectoryIterator::nsDirectoryIterator
737
738	//----------------------------------------------------------------------------------------
739	nsDirectoryIterator& nsDirectoryIterator::operator ++ ()
740	//----------------------------------------------------------------------------------------
741	{
742	mExists = PR_FALSE;
743	if (!mDir)
744	return *this;
745	PRDirEntry* entry = PR_ReadDir(mDir, PR_SKIP_BOTH); // Ignore '.' && '..'
746	if (entry)
747	{
748	mExists = PR_TRUE;
749	mCurrent = mStarting;
750	mCurrent.SetLeafName(entry->name);
751	if (mResoveSymLinks)
752	{
753	PRBool ignore;
754	mCurrent.ResolveSymlink(ignore);
755	}
756	}
757	return *this;
758	} // nsDirectoryIterator::operator ++
759
760	//----------------------------------------------------------------------------------------
761	nsDirectoryIterator& nsDirectoryIterator::operator -- ()
762	//----------------------------------------------------------------------------------------
763	{
764	return ++(*this); // can't do it backwards.
765	} // nsDirectoryIterator::operator --
766

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source: vbox/trunk/src/libs/xpcom18a4/xpcom/obsolete/nsFileSpecWin.cpp@ 1

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