зеркало из https://github.com/mozilla/pjs.git
778 строки
26 KiB
C++
778 строки
26 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* 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" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Henry Sobotka <sobotka@axess.com>
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* William Bonnet <wbonnet@on-x.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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// This file is included by nsFileSpec.cpp, and includes the Unix-specific
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// implementations.
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <errno.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <limits.h>
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#include "xpcom-private.h"
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#include "nsError.h"
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#include "prio.h" /* for PR_Rename */
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#include "nsTArray.h"
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#if defined(_SCO_DS)
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#define _SVID3 /* for statvfs.h */
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#endif
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#ifdef HAVE_SYS_STATVFS_H
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#include <sys/statvfs.h>
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#endif
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#ifdef HAVE_SYS_VFS_H
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#include <sys/vfs.h>
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#endif
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#ifdef HAVE_SYS_STATFS_H
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#include <sys/statfs.h>
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#endif
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#ifdef HAVE_SYS_MOUNT_H
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#include <sys/mount.h>
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#undef Free
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#endif
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#ifdef HAVE_STATVFS
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#define STATFS statvfs
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#else
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#define STATFS statfs
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#endif
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#ifndef MAXPATHLEN
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#define MAXPATHLEN 1024 /* Guessing this is okay. Works for SCO. */
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#endif
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#if defined(__QNX__)
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#include <unix.h> /* for realpath */
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#define f_bavail f_bfree
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extern "C" int truncate(const char *, off_t);
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#endif
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#if defined(SUNOS4)
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extern "C" int statfs(char *, struct statfs *);
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#endif
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#if defined(OSF1)
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extern "C" int statvfs(const char *, struct statvfs *);
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#endif
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#ifdef XP_MACOSX
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static void CopyUTF8toUTF16NFC(const nsACString& aSrc, nsAString& aResult);
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#endif
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//----------------------------------------------------------------------------------------
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void nsFileSpecHelpers::Canonify(nsSimpleCharString& ioPath, PRBool inMakeDirs)
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// Canonify, make absolute, and check whether directories exist
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//----------------------------------------------------------------------------------------
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{
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if (ioPath.IsEmpty())
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return;
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if (inMakeDirs)
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{
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const mode_t mode = 0755;
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nsFileSpecHelpers::MakeAllDirectories((const char*)ioPath, mode);
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}
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errno = 0; // needed?
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if (ioPath[0] != '/')
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{
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// the ioPath that was passed in is relative. We must cat it to the cwd.
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char buffer[MAXPATHLEN];
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(void) getcwd(buffer, MAXPATHLEN);
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strcat(buffer, "/");
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strcat(buffer, ioPath);
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ioPath = buffer;
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}
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} // nsFileSpecHelpers::Canonify
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//----------------------------------------------------------------------------------------
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void nsFileSpec::SetLeafName(const char* inLeafName)
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//----------------------------------------------------------------------------------------
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{
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mPath.LeafReplace('/', inLeafName);
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} // nsFileSpec::SetLeafName
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//----------------------------------------------------------------------------------------
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char* nsFileSpec::GetLeafName() const
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//----------------------------------------------------------------------------------------
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{
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#ifndef XP_MACOSX
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return mPath.GetLeaf('/');
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#else
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char *name = mPath.GetLeaf('/');
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if (!name || !*name)
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return name;
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nsAutoString nameInNFC;
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CopyUTF8toUTF16NFC(nsDependentCString(name), nameInNFC);
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nsCRT::free(name);
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return nsCRT::strdup(NS_ConvertUTF16toUTF8(nameInNFC).get());
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#endif
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} // nsFileSpec::GetLeafName
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//----------------------------------------------------------------------------------------
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PRBool nsFileSpec::Exists() const
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//----------------------------------------------------------------------------------------
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{
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return !mPath.IsEmpty() && 0 == access(mPath, F_OK);
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} // nsFileSpec::Exists
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//----------------------------------------------------------------------------------------
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void nsFileSpec::GetModDate(TimeStamp& outStamp) const
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//----------------------------------------------------------------------------------------
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{
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struct stat st;
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if (!mPath.IsEmpty() && 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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} // nsFileSpec::GetModDate
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//----------------------------------------------------------------------------------------
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PRUint32 nsFileSpec::GetFileSize() const
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//----------------------------------------------------------------------------------------
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{
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struct stat st;
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if (!mPath.IsEmpty() && stat(mPath, &st) == 0)
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return (PRUint32)st.st_size;
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return 0;
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} // nsFileSpec::GetFileSize
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//----------------------------------------------------------------------------------------
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PRBool nsFileSpec::IsFile() const
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//----------------------------------------------------------------------------------------
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{
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struct stat st;
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return !mPath.IsEmpty() && stat(mPath, &st) == 0 && S_ISREG(st.st_mode);
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} // nsFileSpec::IsFile
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//----------------------------------------------------------------------------------------
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PRBool nsFileSpec::IsDirectory() const
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//----------------------------------------------------------------------------------------
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{
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struct stat st;
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return !mPath.IsEmpty() && 0 == stat(mPath, &st) && S_ISDIR(st.st_mode);
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} // nsFileSpec::IsDirectory
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//----------------------------------------------------------------------------------------
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PRBool nsFileSpec::IsHidden() const
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//----------------------------------------------------------------------------------------
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{
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PRBool hidden = PR_FALSE;
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char *leafname = GetLeafName();
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if (nsnull != leafname)
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{
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// rjc: don't return ".", "..", or any file/directory that begins with a "."
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/* if ((!strcmp(leafname, ".")) || (!strcmp(leafname, ".."))) */
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if (leafname[0] == '.')
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{
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hidden = PR_TRUE;
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}
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nsCRT::free(leafname);
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}
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return hidden;
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} // nsFileSpec::IsHidden
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//----------------------------------------------------------------------------------------
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PRBool nsFileSpec::IsSymlink() const
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//----------------------------------------------------------------------------------------
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{
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struct stat st;
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if (!mPath.IsEmpty() && stat(mPath, &st) == 0 && S_ISLNK(st.st_mode))
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return PR_TRUE;
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return PR_FALSE;
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} // nsFileSpec::IsSymlink
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//----------------------------------------------------------------------------------------
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nsresult nsFileSpec::ResolveSymlink(PRBool& wasAliased)
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//----------------------------------------------------------------------------------------
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{
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wasAliased = PR_FALSE;
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char resolvedPath[MAXPATHLEN];
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int charCount = readlink(mPath, (char*)&resolvedPath, MAXPATHLEN);
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if (0 < charCount)
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{
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if (MAXPATHLEN > charCount)
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resolvedPath[charCount] = '\0';
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wasAliased = PR_TRUE;
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/* if it's not an absolute path,
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replace the leaf with what got resolved */
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if (resolvedPath[0] != '/') {
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SetLeafName(resolvedPath);
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}
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else {
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mPath = (char*)&resolvedPath;
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}
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char* canonicalPath = realpath((const char *)mPath, resolvedPath);
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NS_ASSERTION(canonicalPath, "realpath failed");
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if (canonicalPath) {
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mPath = (char*)&resolvedPath;
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}
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else {
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return NS_ERROR_FAILURE;
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}
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}
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return NS_OK;
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} // nsFileSpec::ResolveSymlink
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//----------------------------------------------------------------------------------------
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void nsFileSpec::GetParent(nsFileSpec& outSpec) const
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//----------------------------------------------------------------------------------------
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{
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outSpec.mPath = mPath;
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char* chars = (char*)outSpec.mPath;
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chars[outSpec.mPath.Length() - 1] = '\0'; // avoid trailing separator, if any
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char* cp = strrchr(chars, '/');
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if (cp++)
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outSpec.mPath.SetLength(cp - chars); // truncate.
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} // nsFileSpec::GetParent
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//----------------------------------------------------------------------------------------
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void nsFileSpec::operator += (const char* inRelativePath)
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//----------------------------------------------------------------------------------------
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{
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NS_ASSERTION(inRelativePath, "Attempt to do += with a null string");
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if (!inRelativePath || mPath.IsEmpty())
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return;
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char endChar = mPath[(int)(strlen(mPath) - 1)];
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if (endChar == '/')
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mPath += "x";
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else
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mPath += "/x";
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SetLeafName(inRelativePath);
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} // nsFileSpec::operator +=
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//----------------------------------------------------------------------------------------
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void nsFileSpec::CreateDirectory(int mode)
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//----------------------------------------------------------------------------------------
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{
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// Note that mPath is canonical!
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if (mPath.IsEmpty())
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return;
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mkdir(mPath, mode);
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} // nsFileSpec::CreateDirectory
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//----------------------------------------------------------------------------------------
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void nsFileSpec::Delete(PRBool inRecursive) const
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// To check if this worked, call Exists() afterwards, see?
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//----------------------------------------------------------------------------------------
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{
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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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rmdir(mPath);
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}
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else if (!mPath.IsEmpty())
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remove(mPath);
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} // nsFileSpec::Delete
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//----------------------------------------------------------------------------------------
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void nsFileSpec::RecursiveCopy(nsFileSpec newDir) const
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//----------------------------------------------------------------------------------------
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{
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if (IsDirectory())
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{
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if (!(newDir.Exists()))
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{
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newDir.CreateDirectory();
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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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if (child.IsDirectory())
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{
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nsFileSpec tmpDirSpec(newDir);
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char *leafname = child.GetLeafName();
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tmpDirSpec += leafname;
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nsCRT::free(leafname);
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child.RecursiveCopy(tmpDirSpec);
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}
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else
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{
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child.RecursiveCopy(newDir);
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}
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}
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}
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else if (!mPath.IsEmpty())
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{
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nsFileSpec& filePath = (nsFileSpec&) *this;
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if (!(newDir.Exists()))
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{
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newDir.CreateDirectory();
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}
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filePath.CopyToDir(newDir);
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}
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} // nsFileSpec::RecursiveCopy
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//----------------------------------------------------------------------------------------
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nsresult nsFileSpec::Truncate(PRInt32 offset) const
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//----------------------------------------------------------------------------------------
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{
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char* Path = nsCRT::strdup(mPath);
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int rv = truncate(Path, offset) ;
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nsCRT::free(Path) ;
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if(!rv)
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return NS_OK ;
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else
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return NS_ERROR_FAILURE ;
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} // nsFileSpec::Truncate
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//----------------------------------------------------------------------------------------
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nsresult nsFileSpec::Rename(const char* inNewName)
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//----------------------------------------------------------------------------------------
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{
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NS_ASSERTION(inNewName, "Attempt to Rename with a null string");
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// This function should not be used to move a file on disk.
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if (mPath.IsEmpty() || strchr(inNewName, '/'))
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return NS_FILE_FAILURE;
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char* oldPath = nsCRT::strdup(mPath);
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SetLeafName(inNewName);
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if (PR_Rename(oldPath, mPath) != NS_OK)
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{
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// Could not rename, set back to the original.
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mPath = oldPath;
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nsCRT::free(oldPath);
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return NS_FILE_FAILURE;
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}
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nsCRT::free(oldPath);
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return NS_OK;
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} // nsFileSpec::Rename
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//----------------------------------------------------------------------------------------
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static int CrudeFileCopy_DoCopy(PRFileDesc * pFileDescIn, PRFileDesc * pFileDescOut, char * pBuf, long bufferSize)
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//----------------------------------------------------------------------------------------
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{
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PRInt32 rbytes, wbytes; // Number of bytes read and written in copy loop
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// Copy loop
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//
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// If EOF is reached and no data is available, PR_Read returns 0. A negative
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// return value means an error occured
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rbytes = PR_Read(pFileDescIn, pBuf, bufferSize);
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if (rbytes < 0) // Test if read was unsuccessfull
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{ // Error case
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return -1; // Return an error
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}
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while (rbytes > 0) // While there is data to copy
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{
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// Data buffer size is only 1K ! fwrite function is able to write it in
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// one call. According to the man page fwrite returns a number of elements
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// written if an error occured. Thus there is no need to handle this case
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// as a normal case. Written data cannot be smaller than rbytes.
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wbytes = PR_Write(pFileDescOut, pBuf, rbytes); // Copy data to output file
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if (wbytes != rbytes) // Test if all data was written
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{ // No this an error
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return -1; // Return an error
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}
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// Write is done, we try to get more data
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rbytes = PR_Read(pFileDescIn, pBuf, bufferSize);
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if (rbytes < 0) // Test if read was unsuccessful
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{ // Error case
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return -1; // Return an error
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}
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}
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return 0; // Still here ? ok so it worked :)
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} // nsFileSpec::CrudeFileCopy_DoCopy
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//----------------------------------------------------------------------------------------
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static int CrudeFileCopy(const char* in, const char* out)
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//----------------------------------------------------------------------------------------
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{
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char buf[1024]; // Used as buffer for the copy loop
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PRInt32 rbytes, wbytes; // Number of bytes read and written in copy loop
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struct stat in_stat; // Stores informations from the stat syscall
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int stat_result = -1, ret;
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PRFileDesc * pFileDescIn, * pFileDescOut; // Src and dest pointers
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// Check if the pointers to filenames are valid
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NS_ASSERTION(in && out, "CrudeFileCopy should be called with pointers to filenames...");
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// Check if the pointers are the same, if so, no need to copy A to A
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if (in == out)
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return 0;
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// Check if content of the pointers are the sames, if so, no need to copy A to A
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if (strcmp(in,out) == 0)
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return 0;
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// Retrieve the 'in' file attributes
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stat_result = stat(in, &in_stat);
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if(stat_result != 0)
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{
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// test if stat failed, it can happen if the file does not exist, is not
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// readable or is not available ( can happen with NFS mounts )
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return -1; // Return an error
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}
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// Open the input file for binary read
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pFileDescIn = PR_Open(in, PR_RDONLY, 0444);
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if (pFileDescIn == 0)
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{
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return -1; // Open failed, return an error
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}
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// Open the output file for binary write
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pFileDescOut = PR_Open(out, PR_WRONLY | PR_CREATE_FILE, 0600);
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if (pFileDescOut == 0)
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{
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// Open failed, need to close input file, then return an error
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PR_Close(pFileDescOut); // Close the output file
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return -1; // Open failed, return an error
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}
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// Copy the data
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if (CrudeFileCopy_DoCopy(pFileDescIn, pFileDescOut, buf, sizeof(buf)) != 0)
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{ // Error case
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PR_Close(pFileDescOut); // Close output file
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PR_Close(pFileDescIn); // Close input file
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PR_Delete(out); // Destroy output file
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return -1; // Return an error
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}
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// There is no need for error handling here. This should have worked, but even
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// if it fails, the data are now copied to destination, thus there is no need
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// for the function to fail on the input file error
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PR_Close(pFileDescIn);
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// It is better to call fsync and test return code before exiting to be sure
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// data are actually written on disk. Data loss can happen with NFS mounts
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if (PR_Sync(pFileDescOut) != PR_SUCCESS)
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{ // Test if the fsync function succeeded
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PR_Close(pFileDescOut); // Close output file
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PR_Delete(out); // Destroy output file
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return -1; // Return an error
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}
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// Copy is done, close both file
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if (PR_Close(pFileDescOut) != PR_SUCCESS) // Close output file
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{ // Output file was not closed :(
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PR_Delete(out); // Destroy output file
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return -1; // Return an error
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}
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ret = chmod(out, in_stat.st_mode & 0777); // Set the new file file mode
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if (ret != 0) // Test if the chmod function succeeded
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{
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PR_Delete(out); // Destroy output file
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return -1; // Return an error
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}
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return 0; // Still here ? ok so it worked :)
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} // nsFileSpec::CrudeFileCopy
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//----------------------------------------------------------------------------------------
|
|
nsresult nsFileSpec::CopyToDir(const nsFileSpec& inParentDirectory) const
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
// We can only copy into a directory, and (for now) can not copy entire directories
|
|
nsresult result = NS_FILE_FAILURE;
|
|
|
|
if (inParentDirectory.IsDirectory() && (! IsDirectory() ) )
|
|
{
|
|
char *leafname = GetLeafName();
|
|
nsSimpleCharString destPath(inParentDirectory.GetCString());
|
|
destPath += "/";
|
|
destPath += leafname;
|
|
nsCRT::free(leafname);
|
|
result = NS_FILE_RESULT(CrudeFileCopy(GetCString(), destPath));
|
|
}
|
|
return result;
|
|
} // nsFileSpec::CopyToDir
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
nsresult nsFileSpec::MoveToDir(const nsFileSpec& inNewParentDirectory)
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
// We can only copy into a directory, and (for now) can not copy entire directories
|
|
nsresult result = NS_FILE_FAILURE;
|
|
|
|
if (inNewParentDirectory.IsDirectory() && !IsDirectory())
|
|
{
|
|
char *leafname = GetLeafName();
|
|
nsSimpleCharString destPath(inNewParentDirectory.GetCString());
|
|
destPath += "/";
|
|
destPath += leafname;
|
|
nsCRT::free(leafname);
|
|
|
|
result = NS_FILE_RESULT(CrudeFileCopy(GetCString(), (const char*)destPath));
|
|
if (result == NS_OK)
|
|
{
|
|
// cast to fix const-ness
|
|
((nsFileSpec*)this)->Delete(PR_FALSE);
|
|
|
|
*this = inNewParentDirectory + GetLeafName();
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
nsresult nsFileSpec::Execute(const char* inArgs ) const
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
nsresult result = NS_FILE_FAILURE;
|
|
|
|
if (!mPath.IsEmpty() && !IsDirectory())
|
|
{
|
|
nsSimpleCharString fileNameWithArgs = mPath + " " + inArgs;
|
|
result = NS_FILE_RESULT(system(fileNameWithArgs));
|
|
}
|
|
|
|
return result;
|
|
|
|
} // nsFileSpec::Execute
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
PRInt64 nsFileSpec::GetDiskSpaceAvailable() const
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
PRInt64 bytes; /* XXX dougt needs to fix this */
|
|
LL_I2L(bytes , LONG_MAX); // initialize to all the space in the world?
|
|
|
|
|
|
#if defined(HAVE_SYS_STATFS_H) || defined(HAVE_SYS_STATVFS_H)
|
|
|
|
char curdir [MAXPATHLEN];
|
|
if (mPath.IsEmpty())
|
|
{
|
|
(void) getcwd(curdir, MAXPATHLEN);
|
|
if (!curdir)
|
|
return bytes; /* hope for the best as we did in cheddar */
|
|
}
|
|
else
|
|
sprintf(curdir, "%.200s", (const char*)mPath);
|
|
|
|
struct STATFS fs_buf;
|
|
#if defined(__QNX__) && !defined(HAVE_STATVFS) /* Maybe this should be handled differently? */
|
|
if (STATFS(curdir, &fs_buf, 0, 0) < 0)
|
|
#else
|
|
if (STATFS(curdir, &fs_buf) < 0)
|
|
#endif
|
|
return bytes; /* hope for the best as we did in cheddar */
|
|
|
|
#ifdef DEBUG_DISK_SPACE
|
|
printf("DiskSpaceAvailable: %d bytes\n",
|
|
fs_buf.f_bsize * (fs_buf.f_bavail - 1));
|
|
#endif
|
|
|
|
PRInt64 bsize,bavail;
|
|
LL_I2L( bsize, fs_buf.f_bsize );
|
|
LL_I2L( bavail, fs_buf.f_bavail - 1 );
|
|
LL_MUL( bytes, bsize, bavail );
|
|
return bytes;
|
|
|
|
#else
|
|
/*
|
|
** This platform doesn't have statfs or statvfs, so we don't have much
|
|
** choice but to "hope for the best as we did in cheddar".
|
|
*/
|
|
return bytes;
|
|
#endif /* HAVE_SYS_STATFS_H or HAVE_SYS_STATVFS_H */
|
|
|
|
} // nsFileSpec::GetDiskSpace()
|
|
|
|
//========================================================================================
|
|
// nsDirectoryIterator
|
|
//========================================================================================
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
nsDirectoryIterator::nsDirectoryIterator(const nsFileSpec& inDirectory, PRBool resolveSymLinks)
|
|
//----------------------------------------------------------------------------------------
|
|
: mCurrent(inDirectory)
|
|
, mExists(PR_FALSE)
|
|
, mResoveSymLinks(resolveSymLinks)
|
|
, mStarting(inDirectory)
|
|
, mDir(nsnull)
|
|
|
|
{
|
|
mStarting += "sysygy"; // save off the starting directory
|
|
mCurrent += "sysygy"; // prepare the path for SetLeafName
|
|
mDir = opendir((const char*)nsFilePath(inDirectory));
|
|
++(*this);
|
|
} // nsDirectoryIterator::nsDirectoryIterator
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
nsDirectoryIterator::~nsDirectoryIterator()
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
if (mDir)
|
|
closedir(mDir);
|
|
} // nsDirectoryIterator::nsDirectoryIterator
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
nsDirectoryIterator& nsDirectoryIterator::operator ++ ()
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
mExists = PR_FALSE;
|
|
if (!mDir)
|
|
return *this;
|
|
const char dot[] = ".";
|
|
const char dotdot[] = "..";
|
|
struct dirent* entry = readdir(mDir);
|
|
if (entry && strcmp(entry->d_name, dot) == 0)
|
|
entry = readdir(mDir);
|
|
if (entry && strcmp(entry->d_name, dotdot) == 0)
|
|
entry = readdir(mDir);
|
|
if (entry)
|
|
{
|
|
mExists = PR_TRUE;
|
|
mCurrent = mStarting; // restore mCurrent to be the starting directory. ResolveSymlink() may have taken us to another directory
|
|
mCurrent.SetLeafName(entry->d_name);
|
|
if (mResoveSymLinks)
|
|
{
|
|
PRBool ignore;
|
|
mCurrent.ResolveSymlink(ignore);
|
|
}
|
|
}
|
|
return *this;
|
|
} // nsDirectoryIterator::operator ++
|
|
|
|
//----------------------------------------------------------------------------------------
|
|
nsDirectoryIterator& nsDirectoryIterator::operator -- ()
|
|
//----------------------------------------------------------------------------------------
|
|
{
|
|
return ++(*this); // can't do it backwards.
|
|
} // nsDirectoryIterator::operator --
|
|
|
|
// Convert a UTF-8 string to a UTF-16 string while normalizing to
|
|
// Normalization Form C (composed Unicode). We need this because
|
|
// Mac OS X file system uses NFD (Normalization Form D : decomposed Unicode)
|
|
// while most other OS', server-side programs usually expect NFC.
|
|
|
|
#ifdef XP_MACOSX
|
|
typedef void (*UnicodeNormalizer) (CFMutableStringRef, CFStringNormalizationForm);
|
|
static void CopyUTF8toUTF16NFC(const nsACString& aSrc, nsAString& aResult)
|
|
{
|
|
static PRBool sChecked = PR_FALSE;
|
|
static UnicodeNormalizer sUnicodeNormalizer = NULL;
|
|
|
|
// CFStringNormalize was not introduced until Mac OS 10.2
|
|
if (!sChecked) {
|
|
CFBundleRef carbonBundle =
|
|
CFBundleGetBundleWithIdentifier(CFSTR("com.apple.Carbon"));
|
|
if (carbonBundle)
|
|
sUnicodeNormalizer = (UnicodeNormalizer)
|
|
::CFBundleGetFunctionPointerForName(carbonBundle,
|
|
CFSTR("CFStringNormalize"));
|
|
sChecked = PR_TRUE;
|
|
}
|
|
|
|
if (!sUnicodeNormalizer) { // OS X 10.1 or earlier
|
|
CopyUTF8toUTF16(aSrc, aResult);
|
|
return;
|
|
}
|
|
|
|
const nsAFlatCString &inFlatSrc = PromiseFlatCString(aSrc);
|
|
|
|
// The number of 16bit code units in a UTF-16 string will never be
|
|
// larger than the number of bytes in the corresponding UTF-8 string.
|
|
CFMutableStringRef inStr =
|
|
::CFStringCreateMutable(NULL, inFlatSrc.Length());
|
|
|
|
if (!inStr) {
|
|
CopyUTF8toUTF16(aSrc, aResult);
|
|
return;
|
|
}
|
|
|
|
::CFStringAppendCString(inStr, inFlatSrc.get(), kCFStringEncodingUTF8);
|
|
|
|
sUnicodeNormalizer(inStr, kCFStringNormalizationFormC);
|
|
|
|
CFIndex length = CFStringGetLength(inStr);
|
|
const UniChar* chars = CFStringGetCharactersPtr(inStr);
|
|
|
|
if (chars)
|
|
aResult.Assign(chars, length);
|
|
else {
|
|
nsAutoTArray<UniChar, 512> buffer;
|
|
if (buffer.SetLength(length)) {
|
|
CFStringGetCharacters(inStr, CFRangeMake(0, length), buffer.Elements());
|
|
aResult.Assign(buffer.Elements(), length);
|
|
}
|
|
else
|
|
CopyUTF8toUTF16(aSrc, aResult);
|
|
}
|
|
CFRelease(inStr);
|
|
}
|
|
#endif
|