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gecko-dev/xpcom/io/nsLocalFileCommon.cpp

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1999 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nsIServiceManager.h"
#ifndef XPCOM_STANDALONE
#include "nsIPlatformCharset.h"
#include "nsICharsetConverterManager.h"
#include "nsIUnicodeEncoder.h"
#include "nsIUnicodeDecoder.h"
#include "nsIUnicodeEncoder.h"
#include "nsIUnicodeDecoder.h"
#endif /* XPCOM_STANDALONE */
#include "nsFileSpec.h" // evil ftang hack
#include "nsLocalFile.h" // includes platform-specific headers
#include "nsString.h"
#include "nsCOMPtr.h"
class nsFSStringConversion {
public:
static void CleanUp();
static nsresult UCSToNewFS( const PRUnichar* aIn, char** aOut);
static nsresult FSToNewUCS( const char* aIn, PRUnichar** aOut);
private:
static nsresult PrepareFSCharset();
static nsresult PrepareEncoder();
static nsresult PrepareDecoder();
static nsString* mFSCharset;
#ifndef XPCOM_STANDALONE
static nsIUnicodeEncoder* mEncoder;
static nsIUnicodeDecoder* mDecoder;
#endif /* XPCOM_STANDALONE */
};
nsString* nsFSStringConversion::mFSCharset = nsnull;
#ifndef XPCOM_STANDALONE
nsIUnicodeEncoder* nsFSStringConversion::mEncoder = nsnull;
nsIUnicodeDecoder* nsFSStringConversion::mDecoder = nsnull;
#endif /* XPCOM_STANDALONE */
#define GET_UCS( func , arg) \
{ \
char* tmp; \
nsresult res; \
if(NS_SUCCEEDED(res = (func)(&tmp))) { \
if(NS_SUCCEEDED(res = nsFSStringConversion::FSToNewUCS(tmp, (arg)))){ \
nsMemory::Free(tmp); \
} \
} \
return res; \
}
#define VOID_SET_UCS( func , arg, assertion_msg) \
{ \
char* tmp; \
nsresult res; \
if(NS_SUCCEEDED(res = nsFSStringConversion::UCSToNewFS((arg), &tmp))) { \
(func)(tmp); \
nsMemory::Free(tmp); \
} \
NS_ASSERTION(NS_SUCCEEDED(res), assertion_msg); \
}
#define SET_UCS( func , arg) \
{ \
char* tmp; \
nsresult res; \
if(NS_SUCCEEDED(res = nsFSStringConversion::UCSToNewFS((arg), &tmp))) { \
res = (func)(tmp); \
nsMemory::Free(tmp); \
} \
return res; \
}
#define SET_UCS_2ARGS_2( func , arg1, arg2) \
{ \
char* tmp; \
nsresult res; \
if(NS_SUCCEEDED(res = nsFSStringConversion::UCSToNewFS((arg2), &tmp))){ \
res = (func)(arg1, tmp); \
nsMemory::Free(tmp); \
} \
return res; \
}
#define SET_UCS_2ARGS_1( func , path, followLinks, result) \
{ \
char* tmp; \
nsresult res; \
if(NS_SUCCEEDED(res = nsFSStringConversion::UCSToNewFS((path), &tmp))){ \
res = (func)(tmp, followLinks, result); \
nsMemory::Free(tmp); \
} \
return res; \
}
void
nsFSStringConversion::CleanUp()
{
#ifndef XPCOM_STANDALONE
NS_IF_RELEASE(mEncoder);
NS_IF_RELEASE(mDecoder);
#endif /* XPCOM_STANDALONE */
}
/* static */ nsresult
nsFSStringConversion::PrepareFSCharset()
{
nsresult res = NS_ERROR_NOT_IMPLEMENTED;
#ifndef XPCOM_STANDALONE
res = NS_OK;
if(!mFSCharset)
{
// lazy eval of the file system charset
NS_WITH_SERVICE(nsIPlatformCharset, pcharset, NS_PLATFORMCHARSET_CONTRACTID, &res);
if (NS_SUCCEEDED(res) && !pcharset) res = NS_ERROR_NULL_POINTER;
if (NS_SUCCEEDED(res)) {
mFSCharset = new nsString();
if (!mFSCharset)
res = NS_ERROR_OUT_OF_MEMORY;
}
if(NS_SUCCEEDED(res)) {
res = pcharset->GetCharset(kPlatformCharsetSel_FileName, *mFSCharset);
}
if (NS_FAILED(res)) {
NS_WARNING("cannot get platform charset");
}
}
#endif /* XPCOM_STANDALONE */
return res;
}
/* static */ nsresult
nsFSStringConversion::PrepareEncoder()
{
nsresult res = NS_ERROR_NOT_IMPLEMENTED;
#ifndef XPCOM_STANDALONE
res = NS_OK;
if(! mEncoder)
{
res = PrepareFSCharset();
if(NS_SUCCEEDED(res)) {
NS_WITH_SERVICE(nsICharsetConverterManager,
ucmgr, NS_CHARSETCONVERTERMANAGER_CONTRACTID, &res);
NS_ASSERTION((NS_SUCCEEDED(res) && ucmgr),
"cannot get charset converter manager ");
if(NS_SUCCEEDED(res) && ucmgr)
res = ucmgr->GetUnicodeEncoder( mFSCharset, &mEncoder);
NS_ASSERTION((NS_SUCCEEDED(res) && mEncoder),
"cannot find the unicode encoder");
}
}
#endif /* XPCOM_STANDALONE */
return res;
}
/* static */ nsresult
nsFSStringConversion::PrepareDecoder()
{
nsresult res = NS_ERROR_NOT_IMPLEMENTED;
#ifndef XPCOM_STANDALONE
res = NS_OK;
if(! mDecoder)
{
res = PrepareFSCharset();
if(NS_SUCCEEDED(res)) {
NS_WITH_SERVICE(nsICharsetConverterManager,
ucmgr, NS_CHARSETCONVERTERMANAGER_CONTRACTID, &res);
NS_ASSERTION((NS_SUCCEEDED(res) && ucmgr),
"cannot get charset converter manager ");
if(NS_SUCCEEDED(res) && ucmgr)
res = ucmgr->GetUnicodeDecoder( mFSCharset, &mDecoder);
NS_ASSERTION((NS_SUCCEEDED(res) && mDecoder),
"cannot find the unicode decoder");
}
}
#endif /* XPCOM_STANDALONE */
return res;
}
/* static */ nsresult
nsFSStringConversion::UCSToNewFS( const PRUnichar* aIn, char** aOut)
{
nsresult res = NS_ERROR_NOT_IMPLEMENTED;
#ifndef XPCOM_STANDALONE
res = PrepareEncoder();
if(NS_SUCCEEDED(res))
{
PRInt32 inLength = nsCRT::strlen(aIn);
PRInt32 outLength;
res= mEncoder->GetMaxLength(aIn, inLength,&outLength);
if(NS_SUCCEEDED(res)) {
*aOut = (char*)nsMemory::Alloc(outLength+1);
if(nsnull != aOut) {
res = mEncoder->Convert(aIn, &inLength, *aOut, &outLength);
if(NS_SUCCEEDED(res)) {
(*aOut)[outLength] = '\0';
} else {
nsMemory::Free(*aOut);
aOut = nsnull;
}
} else {
res = NS_ERROR_OUT_OF_MEMORY;
}
}
}
#endif /* XPCOM_STANDALONE */
return res;
}
/* static */ nsresult
nsFSStringConversion::FSToNewUCS( const char* aIn, PRUnichar** aOut)
{
nsresult res = NS_ERROR_NOT_IMPLEMENTED;
#ifndef XPCOM_STANDALONE
res = PrepareDecoder();
if(NS_SUCCEEDED(res))
{
PRInt32 inLength = nsCRT::strlen(aIn);
PRInt32 outLength;
res= mDecoder->GetMaxLength(aIn, inLength,&outLength);
if(NS_SUCCEEDED(res)) {
*aOut = (PRUnichar*)nsMemory::Alloc(2*(outLength+1));
if(nsnull != aOut) {
res = mDecoder->Convert(aIn, &inLength, *aOut, &outLength);
if(NS_SUCCEEDED(res)) {
(*aOut)[outLength] = '\0';
} else {
nsMemory::Free(*aOut);
aOut = nsnull;
}
} else {
res = NS_ERROR_OUT_OF_MEMORY;
}
}
}
#endif /* XPCOM_STANDALONE */
return res;
}
void NS_StartupLocalFile()
{
}
void NS_ShutdownLocalFile()
{
#ifndef XPCOM_STANDALONE
nsFSStringConversion::CleanUp();
#endif /* XPCOM_STANDALONE */
}
// Unicode interface Wrapper
NS_IMETHODIMP
nsLocalFile::InitWithUnicodePath(const PRUnichar *filePath)
{
SET_UCS(InitWithPath, filePath);
}
NS_IMETHODIMP
nsLocalFile::AppendUnicode(const PRUnichar *node)
{
SET_UCS( Append , node);
}
NS_IMETHODIMP
nsLocalFile::AppendRelativeUnicodePath(const PRUnichar *node)
{
SET_UCS( AppendRelativePath , node);
}
NS_IMETHODIMP
nsLocalFile::GetUnicodeLeafName(PRUnichar **aLeafName)
{
GET_UCS(GetLeafName, aLeafName);
}
NS_IMETHODIMP
nsLocalFile::SetUnicodeLeafName(const PRUnichar * aLeafName)
{
SET_UCS( SetLeafName , aLeafName);
}
NS_IMETHODIMP
nsLocalFile::GetUnicodePath(PRUnichar **_retval)
{
GET_UCS(GetPath, _retval);
}
NS_IMETHODIMP
nsLocalFile::CopyToUnicode(nsIFile *newParentDir, const PRUnichar *newName)
{
SET_UCS_2ARGS_2( CopyTo , newParentDir, newName);
}
NS_IMETHODIMP
nsLocalFile::CopyToFollowingLinksUnicode(nsIFile *newParentDir, const PRUnichar *newName)
{
SET_UCS_2ARGS_2( CopyToFollowingLinks , newParentDir, newName);
}
NS_IMETHODIMP
nsLocalFile::MoveToUnicode(nsIFile *newParentDir, const PRUnichar *newName)
{
SET_UCS_2ARGS_2( MoveTo , newParentDir, newName);
}
NS_IMETHODIMP
nsLocalFile::GetUnicodeTarget(PRUnichar **_retval)
{
GET_UCS(GetTarget, _retval);
}
nsresult
NS_NewUnicodeLocalFile(const PRUnichar* path, PRBool followLinks, nsILocalFile* *result)
{
SET_UCS_2ARGS_1( NS_NewLocalFile, path, followLinks, result)
}
// should work on Macintosh, Unix, and Win32.
#define kMaxFilenameLength 31
NS_IMETHODIMP
nsLocalFile::CreateUnique(const char* suggestedName, PRUint32 type, PRUint32 attributes)
{
nsresult rv = Create(type, attributes);
if (NS_SUCCEEDED(rv)) return NS_OK;
if (rv != NS_ERROR_FILE_ALREADY_EXISTS) return rv;
char* leafName;
rv = GetLeafName(&leafName);
if (NS_FAILED(rv)) return rv;
char* lastDot = strrchr(leafName, '.');
char suffix[kMaxFilenameLength + 1] = "";
if (lastDot)
{
strncpy(suffix, lastDot, kMaxFilenameLength); // include '.'
suffix[kMaxFilenameLength] = 0; // make sure it's null terminated
*lastDot = '\0'; // strip suffix and dot.
}
// 27 should work on Macintosh, Unix, and Win32.
const int maxRootLength = 27 - nsCRT::strlen(suffix) - 1;
if ((int)nsCRT::strlen(leafName) > (int)maxRootLength)
leafName[maxRootLength] = '\0';
for (short indx = 1; indx < 10000; indx++)
{
// start with "Picture-1.jpg" after "Picture.jpg" exists
char newName[kMaxFilenameLength + 1];
sprintf(newName, "%s-%d%s", leafName, indx, suffix);
SetLeafName(newName);
rv = Create(type, attributes);
if (NS_SUCCEEDED(rv) || rv != NS_ERROR_FILE_ALREADY_EXISTS)
{
nsMemory::Free(leafName);
return rv;
}
}
nsMemory::Free(leafName);
// The disk is full, sort of
return NS_ERROR_FILE_TOO_BIG;
}
// E_V_I_L Below! E_V_I_L Below! E_V_I_L Below! E_V_I_L Below!
// FTANG need to move this crap out of here. Mixing nsFileSpec here is
// E_V_I_L
// ==================================================================
// nsFileSpec stuff . put here untill nsFileSpec get obsoleted
// ==================================================================
void nsFileSpec::operator = (const nsString& inNativePath)
{
char* tmp;
nsresult res;
if(NS_SUCCEEDED(res = nsFSStringConversion::UCSToNewFS((inNativePath.GetUnicode()), &tmp))) {
*this = tmp;
nsMemory::Free(tmp);
}
mError = res;
NS_ASSERTION(NS_SUCCEEDED(res), "nsFileSpec = filed");
}
nsFileSpec nsFileSpec::operator + (const nsString& inRelativeUnixPath) const
{
nsFileSpec resultSpec;
char* tmp;
nsresult res;
if(NS_SUCCEEDED(res = nsFSStringConversion::UCSToNewFS((inRelativeUnixPath.GetUnicode()), &tmp))) {
resultSpec = *this;
resultSpec += tmp;
nsMemory::Free(tmp);
}
NS_ASSERTION(NS_SUCCEEDED(res), "nsFileSpec + filed");
return resultSpec;
}
void nsFileSpec::operator += (const nsString& inRelativeUnixPath)
{
char* tmp;
nsresult res;
if(NS_SUCCEEDED(res = nsFSStringConversion::UCSToNewFS((inRelativeUnixPath.GetUnicode()), &tmp))) {
*this += tmp;
nsMemory::Free(tmp);
}
mError = res;
NS_ASSERTION(NS_SUCCEEDED(res), "nsFileSpec + filed");
}
void nsFileSpec::SetLeafName (const nsString& inLeafName)
{
VOID_SET_UCS( SetLeafName , inLeafName.GetUnicode(),"nsFileSpec::SetLeafName failed");
}
void nsFileSpec::MakeUnique(const nsString& inSuggestedLeafName)
{
VOID_SET_UCS( MakeUnique,inSuggestedLeafName.GetUnicode(),"nsFileSpec::MakeUnique failed");
}
nsresult nsFileSpec::Rename(const nsString& inNewName)
{
SET_UCS( Rename , inNewName.GetUnicode());
}
nsresult nsFileSpec::Execute(const nsString& args) const
{
SET_UCS( Execute , args.GetUnicode());
}
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