зеркало из https://github.com/mozilla/gecko-dev.git
367 строки
12 KiB
C++
367 строки
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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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 "nsError.h"
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//----------------------------------------------------------------------------------------
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void nsFileSpecHelpers::Canonify(char*& 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)
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return;
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if (inMakeDirs)
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{
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const mode_t mode = 0700;
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nsFileSpecHelpers::MakeAllDirectories(ioPath, mode);
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}
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char buffer[MAXPATHLEN];
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errno = 0;
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*buffer = '\0';
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char* canonicalPath = realpath(ioPath, buffer);
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if (!canonicalPath)
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{
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// Linux's realpath() is pathetically buggy. If the reason for the nil
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// result is just that the leaf does not exist, strip the leaf off,
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// process that, and then add the leaf back.
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char* allButLeaf = nsFileSpecHelpers::StringDup(ioPath);
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if (!allButLeaf)
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return;
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char* lastSeparator = strrchr(allButLeaf, '/');
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if (lastSeparator)
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{
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*lastSeparator = '\0';
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canonicalPath = realpath(allButLeaf, buffer);
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strcat(buffer, "/");
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// Add back the leaf
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strcat(buffer, ++lastSeparator);
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}
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delete [] allButLeaf;
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}
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if (!canonicalPath && *ioPath != '/' && !inMakeDirs)
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{
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// Well, if it's a relative path, hack it ourselves.
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canonicalPath = realpath(".", buffer);
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if (canonicalPath)
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{
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strcat(canonicalPath, "/");
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strcat(canonicalPath, ioPath);
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}
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}
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if (canonicalPath)
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nsFileSpecHelpers::StringAssign(ioPath, canonicalPath);
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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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nsFileSpecHelpers::LeafReplace(mPath, '/', 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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return nsFileSpecHelpers::GetLeaf(mPath, '/');
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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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struct stat st;
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return 0 == stat(mPath, &st);
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} // nsFileSpec::Exists
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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 0 == stat(mPath, &st) && 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 0 == stat(mPath, &st) && S_ISDIR(st.st_mode);
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} // nsFileSpec::IsDirectory
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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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nsFileSpecHelpers::StringAssign(outSpec.mPath, mPath);
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char* cp = strrchr(outSpec.mPath, '/');
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if (cp)
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*cp = '\0';
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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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if (!inRelativePath || !mPath)
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return;
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char endChar = mPath[strlen(mPath) - 1];
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if (endChar == '/')
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nsFileSpecHelpers::ReallocCat(mPath, "x");
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else
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nsFileSpecHelpers::ReallocCat(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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mkdir(mPath, mode);
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} // nsFileSpec::CreateDirectory
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//----------------------------------------------------------------------------------------
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void nsFileSpec::Delete(PRBool inRecursive)
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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); 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
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remove(mPath);
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} // nsFileSpec::Delete
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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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// This function should not be used to move a file on disk.
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if (strchr(inNewName, '/'))
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return NS_FILE_FAILURE;
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if (PR_Rename(mPath, inNewName) != 0)
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{
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return NS_FILE_FAILURE;
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}
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SetLeafName(inNewName);
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return NS_OK;
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} // nsFileSpec::Rename
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static int CrudeFileCopy(const char* in, const char* out)
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{
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struct stat in_stat;
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int stat_result = -1;
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char buf [1024];
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FILE *ifp, *ofp;
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int rbytes, wbytes;
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if (!in || !out)
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return -1;
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stat_result = stat (in, &in_stat);
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ifp = fopen (in, "r");
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if (!ifp)
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{
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return -1;
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}
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ofp = fopen (out, "w");
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if (!ofp)
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{
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fclose (ifp);
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return -1;
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}
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while ((rbytes = fread (buf, 1, sizeof(buf), ifp)) > 0)
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{
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while (rbytes > 0)
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{
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if ( (wbytes = fwrite (buf, 1, rbytes, ofp)) < 0 )
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{
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fclose (ofp);
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fclose (ifp);
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unlink(out);
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return -1;
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}
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rbytes -= wbytes;
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}
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}
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fclose (ofp);
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fclose (ifp);
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if (stat_result == 0)
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{
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chmod (out, in_stat.st_mode & 0777);
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}
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return 0;
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} // nsFileSpec::Rename
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//----------------------------------------------------------------------------------------
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nsresult nsFileSpec::Copy(const nsFileSpec& inParentDirectory) const
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//----------------------------------------------------------------------------------------
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{
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// We can only copy into a directory, and (for now) can not copy entire directories
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nsresult result = NS_FILE_FAILURE;
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if (inParentDirectory.IsDirectory() && (! IsDirectory() ) )
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{
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char *leafname = GetLeafName();
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char* destPath = nsFileSpecHelpers::StringDup(inParentDirectory, ( strlen(inParentDirectory) + 1 + strlen(leafname) ) );
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strcat(destPath, "/");
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strcat(destPath, leafname);
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delete [] leafname;
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result = NS_FILE_RESULT(CrudeFileCopy(*this, destPath));
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delete [] destPath;
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}
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return result;
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} // nsFileSpec::Copy
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//----------------------------------------------------------------------------------------
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nsresult nsFileSpec::Move(const nsFileSpec& inNewParentDirectory) const
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//----------------------------------------------------------------------------------------
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{
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// We can only copy into a directory, and (for now) can not copy entire directories
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nsresult result = NS_FILE_FAILURE;
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if (inNewParentDirectory.IsDirectory() && (! IsDirectory() ) )
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{
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char *leafname = GetLeafName();
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char* destPath
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= nsFileSpecHelpers::StringDup(
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inNewParentDirectory,
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strlen(inNewParentDirectory) + 1 + strlen(leafname));
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strcat(destPath, "/");
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strcat(destPath, leafname);
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delete [] leafname;
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result = NS_FILE_RESULT(CrudeFileCopy(*this, destPath));
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if (result == NS_OK)
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{
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// cast to fix const-ness
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((nsFileSpec*)this)->Delete(PR_FALSE);
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}
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delete [] destPath;
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}
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return result;
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}
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//----------------------------------------------------------------------------------------
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nsresult nsFileSpec::Execute(const char* inArgs ) const
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//----------------------------------------------------------------------------------------
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{
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nsresult result = NS_FILE_FAILURE;
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if (! IsDirectory())
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{
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char* fileNameWithArgs
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= nsFileSpecHelpers::StringDup(mPath, strlen(mPath) + 1 + strlen(inArgs));
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strcat(fileNameWithArgs, " ");
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strcat(fileNameWithArgs, inArgs);
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result = NS_FILE_RESULT(system(fileNameWithArgs));
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delete [] fileNameWithArgs;
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}
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return result;
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} // nsFileSpec::Execute
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//========================================================================================
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// nsDirectoryIterator
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//========================================================================================
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//----------------------------------------------------------------------------------------
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nsDirectoryIterator::nsDirectoryIterator(
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const nsFileSpec& inDirectory
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, int inIterateDirection)
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//----------------------------------------------------------------------------------------
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: mCurrent(inDirectory)
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, mDir(nsnull)
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, mExists(PR_FALSE)
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{
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mCurrent += "sysygy"; // prepare the path for SetLeafName
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mDir = opendir((const char*)nsFilePath(inDirectory));
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++(*this);
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} // nsDirectoryIterator::nsDirectoryIterator
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//----------------------------------------------------------------------------------------
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nsDirectoryIterator::~nsDirectoryIterator()
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//----------------------------------------------------------------------------------------
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{
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if (mDir)
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closedir(mDir);
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} // nsDirectoryIterator::nsDirectoryIterator
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//----------------------------------------------------------------------------------------
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nsDirectoryIterator& nsDirectoryIterator::operator ++ ()
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//----------------------------------------------------------------------------------------
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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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char* dot = ".";
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char* dotdot = "..";
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struct dirent* entry = readdir(mDir);
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if (entry && strcmp(entry->d_name, dot) == 0)
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entry = readdir(mDir);
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if (entry && strcmp(entry->d_name, dotdot) == 0)
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entry = readdir(mDir);
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if (entry)
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{
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mExists = PR_TRUE;
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mCurrent.SetLeafName(entry->d_name);
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}
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return *this;
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} // nsDirectoryIterator::operator ++
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//----------------------------------------------------------------------------------------
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nsDirectoryIterator& nsDirectoryIterator::operator -- ()
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//----------------------------------------------------------------------------------------
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{
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return ++(*this); // can't do it backwards.
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} // nsDirectoryIterator::operator --
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