//----------------------------------------------------------------------------------------
nsresult nsFileSpec::Rename(const char* inNewName)
//----------------------------------------------------------------------------------------
{
NS_ASSERTION(inNewName, "Attempt to Rename with a null string");
// This function should not be used to move a file on disk.
if (mPath.IsEmpty() || strchr(inNewName, '/'))
return NS_FILE_FAILURE;
char* oldPath = nsCRT::strdup(mPath);
SetLeafName(inNewName);
if (PR_Rename(oldPath, mPath) != NS_OK)
{
// Could not rename, set back to the original.
mPath = oldPath;
nsCRT::free(oldPath);
return NS_FILE_FAILURE;
}
nsCRT::free(oldPath);
return NS_OK;
} // nsFileSpec::Rename
//----------------------------------------------------------------------------------------
void nsFileSpec::MakeUnique()
//----------------------------------------------------------------------------------------
{
if (!Exists())
return;
char* leafName = GetLeafName();
if (!leafName)
return;
char* lastDot = strrchr(leafName, '.');
char* suffix = "";
if (lastDot)
{
suffix = nsCRT::strdup(lastDot); // include '.'
*lastDot = '\0'; // strip suffix and dot.
}
const int kMaxRootLength
= nsFileSpecHelpers::kMaxCoreLeafNameLength - strlen(suffix) - 1;
if ((int)strlen(leafName) > (int)kMaxRootLength)
leafName[kMaxRootLength] = '\0';
for (short indx = 1; indx < 1000 && Exists(); indx++)
{
// start with "Picture-1.jpg" after "Picture.jpg" exists
char newName[nsFileSpecHelpers::kMaxFilenameLength + 1];
sprintf(newName, "%s-%d%s", leafName, indx, suffix);
SetLeafName(newName);
}
if (*suffix)
nsCRT::free(suffix);
nsCRT::free(leafName);
} // nsFileSpec::MakeUnique
//----------------------------------------------------------------------------------------
nsresult nsFileSpec::ResolveSymlink(PRBool& wasAliased)
//----------------------------------------------------------------------------------------
{
wasAliased = PR_FALSE;
char resolvedPath[MAXPATHLEN];
int charCount = readlink(mPath, (char*)&resolvedPath, MAXPATHLEN);
if (0 < charCount)
{
if (MAXPATHLEN > charCount)
resolvedPath[charCount] = '\0';
wasAliased = PR_TRUE;
/* if it's not an absolute path,
replace the leaf with what got resolved */
if (resolvedPath[0] != '/') {
SetLeafName(resolvedPath);
}
else {
mPath = (char*)&resolvedPath;
}
char* canonicalPath = realpath((const char *)mPath, resolvedPath);
NS_ASSERTION(canonicalPath, "realpath failed");
if (canonicalPath) {
mPath = (char*)&resolvedPath;
}
else {
return NS_ERROR_FAILURE;
}
}
return NS_OK;
} // nsFileSpec::ResolveSymlink
//----------------------------------------------------------------------------------------
void nsFileSpec::MakeUnique(const char* inSuggestedLeafName)
//----------------------------------------------------------------------------------------
{
if (inSuggestedLeafName && *inSuggestedLeafName)
SetLeafName(inSuggestedLeafName);
MakeUnique();
} // nsFileSpec::MakeUnique
//----------------------------------------------------------------------------------------
void nsFileSpec::operator += (const char* inRelativePath)
//----------------------------------------------------------------------------------------
{
if (!inRelativePath || mPath.IsEmpty())
return;
char endChar = mPath[(int)(strlen(mPath) - 1)];
if (endChar == '/')
mPath += "x";
else
mPath += "/x";
SetLeafName(inRelativePath);
} // nsFileSpec::operator +=
//----------------------------------------------------------------------------------------
void nsFileSpec::operator += (const char* inRelativePath)
//----------------------------------------------------------------------------------------
{
NS_ASSERTION(inRelativePath, "Attempt to do += with a null string");
if (!inRelativePath || mPath.IsEmpty())
return;
char endChar = mPath[(int)(strlen(mPath) - 1)];
if (endChar == '/')
mPath += "x";
else
mPath += "/x";
SetLeafName(inRelativePath);
} // nsFileSpec::operator +=
//----------------------------------------------------------------------------------------
void nsFileSpec::operator += (const char* inRelativePath)
//----------------------------------------------------------------------------------------
{
NS_ASSERTION(inRelativePath, "Attempt to do += with a null string");
if (!inRelativePath || mPath.IsEmpty())
return;
if (mPath[mPath.Length() - 1] == '\\')
mPath += "x";
else
mPath += "\\x";
// If it's a (unix) relative path, make it native
nsSimpleCharString dosPath = inRelativePath;
nsFileSpecHelpers::UnixToNative(dosPath);
SetLeafName(dosPath);
} // nsFileSpec::operator +=
//----------------------------------------------------------------------------------------
nsresult nsFileSpec::ResolveSymlink(PRBool& wasAliased)
//----------------------------------------------------------------------------------------
{
wasAliased = PR_FALSE;
char resolvedPath[MAXPATHLEN];
int charCount = readlink(mPath, (char*)&resolvedPath, MAXPATHLEN);
if (0 < charCount)
{
if (MAXPATHLEN > charCount)
resolvedPath[charCount] = '\0';
wasAliased = PR_TRUE;
/* if it's not an absolute path,
replace the leaf with what got resolved */
if (resolvedPath[0] != '/') {
SetLeafName(resolvedPath);
}
else {
mPath = (char*)resolvedPath;
}
BEntry e((const char *)mPath, true); // traverse symlink
BPath p;
status_t err;
err = e.GetPath(&p);
NS_ASSERTION(err == B_OK, "realpath failed");
const char* canonicalPath = p.Path();
if(err == B_OK)
mPath = (char*)canonicalPath;
else
return NS_ERROR_FAILURE;
}
return NS_OK;
} // nsFileSpec::ResolveSymlink
NS_IMETHODIMP
nsLocalFile::CreateUnique(uint32_t aType, uint32_t aAttributes)
{
nsresult rv;
bool longName;
#ifdef XP_WIN
nsAutoString pathName, leafName, rootName, suffix;
rv = GetPath(pathName);
#else
nsAutoCString pathName, leafName, rootName, suffix;
rv = GetNativePath(pathName);
#endif
if (NS_FAILED(rv)) {
return rv;
}
longName = (pathName.Length() + kMaxSequenceNumberLength >
kMaxFilenameLength);
if (!longName) {
rv = Create(aType, aAttributes);
if (rv != NS_ERROR_FILE_ALREADY_EXISTS) {
return rv;
}
}
#ifdef XP_WIN
rv = GetLeafName(leafName);
if (NS_FAILED(rv)) {
return rv;
}
const int32_t lastDot = leafName.RFindChar(char16_t('.'));
#else
rv = GetNativeLeafName(leafName);
if (NS_FAILED(rv)) {
return rv;
}
const int32_t lastDot = leafName.RFindChar('.');
#endif
if (lastDot == kNotFound) {
rootName = leafName;
} else {
suffix = Substring(leafName, lastDot); // include '.'
rootName = Substring(leafName, 0, lastDot); // strip suffix and dot
}
if (longName) {
int32_t maxRootLength = (kMaxFilenameLength -
(pathName.Length() - leafName.Length()) -
suffix.Length() - kMaxSequenceNumberLength);
// We cannot create an item inside a directory whose name is too long.
// Also, ensure that at least one character remains after we truncate
// the root name, as we don't want to end up with an empty leaf name.
if (maxRootLength < 2) {
return NS_ERROR_FILE_UNRECOGNIZED_PATH;
}
#ifdef XP_WIN
// ensure that we don't cut the name in mid-UTF16-character
rootName.SetLength(NS_IS_LOW_SURROGATE(rootName[maxRootLength]) ?
maxRootLength - 1 : maxRootLength);
SetLeafName(rootName + suffix);
#else
if (NS_IsNativeUTF8()) {
// ensure that we don't cut the name in mid-UTF8-character
// (assume the name is valid UTF8 to begin with)
while (UTF8traits::isInSeq(rootName[maxRootLength])) {
--maxRootLength;
}
// Another check to avoid ending up with an empty leaf name.
if (maxRootLength == 0 && suffix.IsEmpty()) {
return NS_ERROR_FILE_UNRECOGNIZED_PATH;
}
}
rootName.SetLength(maxRootLength);
SetNativeLeafName(rootName + suffix);
#endif
nsresult rv = Create(aType, aAttributes);
if (rv != NS_ERROR_FILE_ALREADY_EXISTS) {
return rv;
}
}
for (int indx = 1; indx < 10000; ++indx) {
// start with "Picture-1.jpg" after "Picture.jpg" exists
#ifdef XP_WIN
SetLeafName(rootName +
NS_ConvertASCIItoUTF16(nsPrintfCString("-%d", indx)) +
suffix);
#else
SetNativeLeafName(rootName + nsPrintfCString("-%d", indx) + suffix);
#endif
rv = Create(aType, aAttributes);
if (NS_SUCCEEDED(rv) || rv != NS_ERROR_FILE_ALREADY_EXISTS) {
return rv;
}
}
// The disk is full, sort of
return NS_ERROR_FILE_TOO_BIG;
}
