mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-29 21:25:35 +00:00
748 lines
21 KiB
C++
748 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla 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/MPL/
|
|
*
|
|
* 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 the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Pierre Phaneuf <pp@ludusdesign.com>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
#include "nsID.h"
|
|
#include "nsCRT.h"
|
|
#include "nsReadableUtils.h"
|
|
#include "nsIInputStream.h"
|
|
#include "nsUnicharInputStream.h"
|
|
#include "pratom.h"
|
|
#include "nsEnumeratorUtils.h"
|
|
#include "nsReadableUtils.h"
|
|
#include "nsPrintfCString.h"
|
|
#include "nsDependentString.h"
|
|
|
|
#define PL_ARENA_CONST_ALIGN_MASK 3
|
|
#include "nsPersistentProperties.h"
|
|
#include "nsIProperties.h"
|
|
#include "nsISupportsArray.h"
|
|
#include "nsProperties.h"
|
|
|
|
struct PropertyTableEntry : public PLDHashEntryHdr
|
|
{
|
|
// both of these are arena-allocated
|
|
const char *mKey;
|
|
const PRUnichar *mValue;
|
|
};
|
|
|
|
static PRUnichar*
|
|
ArenaStrdup(const nsAFlatString& aString, PLArenaPool* aArena)
|
|
{
|
|
void *mem;
|
|
// add one to include the null terminator
|
|
PRInt32 len = (aString.Length()+1) * sizeof(PRUnichar);
|
|
PL_ARENA_ALLOCATE(mem, aArena, len);
|
|
NS_ASSERTION(mem, "Couldn't allocate space!\n");
|
|
if (mem) {
|
|
memcpy(mem, aString.get(), len);
|
|
}
|
|
return static_cast<PRUnichar*>(mem);
|
|
}
|
|
|
|
static char*
|
|
ArenaStrdup(const nsAFlatCString& aString, PLArenaPool* aArena)
|
|
{
|
|
void *mem;
|
|
// add one to include the null terminator
|
|
PRInt32 len = (aString.Length()+1) * sizeof(char);
|
|
PL_ARENA_ALLOCATE(mem, aArena, len);
|
|
NS_ASSERTION(mem, "Couldn't allocate space!\n");
|
|
if (mem)
|
|
memcpy(mem, aString.get(), len);
|
|
return static_cast<char*>(mem);
|
|
}
|
|
|
|
static const struct PLDHashTableOps property_HashTableOps = {
|
|
PL_DHashAllocTable,
|
|
PL_DHashFreeTable,
|
|
PL_DHashStringKey,
|
|
PL_DHashMatchStringKey,
|
|
PL_DHashMoveEntryStub,
|
|
PL_DHashClearEntryStub,
|
|
PL_DHashFinalizeStub,
|
|
nsnull,
|
|
};
|
|
|
|
//
|
|
// parser stuff
|
|
//
|
|
enum EParserState {
|
|
eParserState_AwaitingKey,
|
|
eParserState_Key,
|
|
eParserState_AwaitingValue,
|
|
eParserState_Value,
|
|
eParserState_Comment
|
|
};
|
|
|
|
enum EParserSpecial {
|
|
eParserSpecial_None, // not parsing a special character
|
|
eParserSpecial_Escaped, // awaiting a special character
|
|
eParserSpecial_Unicode // parsing a \Uxxx value
|
|
};
|
|
|
|
class nsPropertiesParser
|
|
{
|
|
public:
|
|
nsPropertiesParser(nsIPersistentProperties* aProps) :
|
|
mHaveMultiLine(PR_FALSE), mState(eParserState_AwaitingKey),
|
|
mProps(aProps) {}
|
|
|
|
void FinishValueState(nsAString& aOldValue) {
|
|
static const char trimThese[] = " \t";
|
|
mKey.Trim(trimThese, PR_FALSE, PR_TRUE);
|
|
|
|
// This is really ugly hack but it should be fast
|
|
PRUnichar backup_char;
|
|
if (mMinLength)
|
|
{
|
|
backup_char = mValue[mMinLength-1];
|
|
mValue.SetCharAt('x', mMinLength-1);
|
|
}
|
|
mValue.Trim(trimThese, PR_FALSE, PR_TRUE);
|
|
if (mMinLength)
|
|
mValue.SetCharAt(backup_char, mMinLength-1);
|
|
|
|
mProps->SetStringProperty(NS_ConvertUTF16toUTF8(mKey), mValue, aOldValue);
|
|
mSpecialState = eParserSpecial_None;
|
|
WaitForKey();
|
|
}
|
|
|
|
EParserState GetState() { return mState; }
|
|
|
|
static NS_METHOD SegmentWriter(nsIUnicharInputStream* aStream,
|
|
void* aClosure,
|
|
const PRUnichar *aFromSegment,
|
|
PRUint32 aToOffset,
|
|
PRUint32 aCount,
|
|
PRUint32 *aWriteCount);
|
|
|
|
nsresult ParseBuffer(const PRUnichar* aBuffer, PRUint32 aBufferLength);
|
|
|
|
private:
|
|
PRBool ParseValueCharacter(
|
|
PRUnichar c, // character that is just being parsed
|
|
const PRUnichar* cur, // pointer to character c in the buffer
|
|
const PRUnichar* &tokenStart, // string copying is done in blocks as big as
|
|
// possible, tokenStart points to the beginning
|
|
// of this block
|
|
nsAString& oldValue); // when duplicate property is found, new value
|
|
// is stored into hashtable and the old one is
|
|
// placed in this variable
|
|
|
|
void WaitForKey() {
|
|
mState = eParserState_AwaitingKey;
|
|
}
|
|
|
|
void EnterKeyState() {
|
|
mKey.Truncate();
|
|
mState = eParserState_Key;
|
|
}
|
|
|
|
void WaitForValue() {
|
|
mState = eParserState_AwaitingValue;
|
|
}
|
|
|
|
void EnterValueState() {
|
|
mValue.Truncate();
|
|
mMinLength = 0;
|
|
mState = eParserState_Value;
|
|
mSpecialState = eParserSpecial_None;
|
|
}
|
|
|
|
void EnterCommentState() {
|
|
mState = eParserState_Comment;
|
|
}
|
|
|
|
nsAutoString mKey;
|
|
nsAutoString mValue;
|
|
|
|
PRUint32 mUnicodeValuesRead; // should be 4!
|
|
PRUnichar mUnicodeValue; // currently parsed unicode value
|
|
PRBool mHaveMultiLine; // is TRUE when last processed characters form
|
|
// any of following sequences:
|
|
// - "\\\r"
|
|
// - "\\\n"
|
|
// - "\\\r\n"
|
|
// - any sequence above followed by any
|
|
// combination of ' ' and '\t'
|
|
PRBool mMultiLineCanSkipN; // TRUE if "\\\r" was detected
|
|
PRUint32 mMinLength; // limit right trimming at the end to not trim
|
|
// escaped whitespaces
|
|
EParserState mState;
|
|
// if we see a '\' then we enter this special state
|
|
EParserSpecial mSpecialState;
|
|
nsIPersistentProperties* mProps;
|
|
};
|
|
|
|
inline PRBool IsWhiteSpace(PRUnichar aChar)
|
|
{
|
|
return (aChar == ' ') || (aChar == '\t') ||
|
|
(aChar == '\r') || (aChar == '\n');
|
|
}
|
|
|
|
inline PRBool IsEOL(PRUnichar aChar)
|
|
{
|
|
return (aChar == '\r') || (aChar == '\n');
|
|
}
|
|
|
|
|
|
PRBool nsPropertiesParser::ParseValueCharacter(
|
|
PRUnichar c, const PRUnichar* cur, const PRUnichar* &tokenStart,
|
|
nsAString& oldValue)
|
|
{
|
|
switch (mSpecialState) {
|
|
|
|
// the normal state - look for special characters
|
|
case eParserSpecial_None:
|
|
switch (c) {
|
|
case '\\':
|
|
if (mHaveMultiLine)
|
|
// there is nothing to append to mValue yet
|
|
mHaveMultiLine = PR_FALSE;
|
|
else
|
|
mValue += Substring(tokenStart, cur);
|
|
|
|
mSpecialState = eParserSpecial_Escaped;
|
|
break;
|
|
|
|
case '\n':
|
|
// if we detected multiline and got only "\\\r" ignore next "\n" if any
|
|
if (mHaveMultiLine && mMultiLineCanSkipN) {
|
|
// but don't allow another '\n' to be skipped
|
|
mMultiLineCanSkipN = PR_FALSE;
|
|
// Now there is nothing to append to the mValue since we are skipping
|
|
// whitespaces at the beginning of the new line of the multiline
|
|
// property. Set tokenStart properly to ensure that nothing is appended
|
|
// if we find regular line-end or the end of the buffer.
|
|
tokenStart = cur+1;
|
|
break;
|
|
}
|
|
// no break
|
|
|
|
case '\r':
|
|
// we're done! We have a key and value
|
|
mValue += Substring(tokenStart, cur);
|
|
FinishValueState(oldValue);
|
|
mHaveMultiLine = PR_FALSE;
|
|
break;
|
|
|
|
default:
|
|
// there is nothing to do with normal characters,
|
|
// but handle multilines correctly
|
|
if (mHaveMultiLine) {
|
|
if (c == ' ' || c == '\t') {
|
|
// don't allow another '\n' to be skipped
|
|
mMultiLineCanSkipN = PR_FALSE;
|
|
// Now there is nothing to append to the mValue since we are skipping
|
|
// whitespaces at the beginning of the new line of the multiline
|
|
// property. Set tokenStart properly to ensure that nothing is appended
|
|
// if we find regular line-end or the end of the buffer.
|
|
tokenStart = cur+1;
|
|
break;
|
|
}
|
|
mHaveMultiLine = PR_FALSE;
|
|
tokenStart = cur;
|
|
}
|
|
break; // from switch on (c)
|
|
}
|
|
break; // from switch on (mSpecialState)
|
|
|
|
// saw a \ character, so parse the character after that
|
|
case eParserSpecial_Escaped:
|
|
// probably want to start parsing at the next token
|
|
// other characters, like 'u' might override this
|
|
tokenStart = cur+1;
|
|
mSpecialState = eParserSpecial_None;
|
|
|
|
switch (c) {
|
|
|
|
// the easy characters - \t, \n, and so forth
|
|
case 't':
|
|
mValue += PRUnichar('\t');
|
|
mMinLength = mValue.Length();
|
|
break;
|
|
case 'n':
|
|
mValue += PRUnichar('\n');
|
|
mMinLength = mValue.Length();
|
|
break;
|
|
case 'r':
|
|
mValue += PRUnichar('\r');
|
|
mMinLength = mValue.Length();
|
|
break;
|
|
case '\\':
|
|
mValue += PRUnichar('\\');
|
|
break;
|
|
|
|
// switch to unicode mode!
|
|
case 'u':
|
|
case 'U':
|
|
mSpecialState = eParserSpecial_Unicode;
|
|
mUnicodeValuesRead = 0;
|
|
mUnicodeValue = 0;
|
|
break;
|
|
|
|
// a \ immediately followed by a newline means we're going multiline
|
|
case '\r':
|
|
case '\n':
|
|
mHaveMultiLine = PR_TRUE;
|
|
mMultiLineCanSkipN = (c == '\r');
|
|
mSpecialState = eParserSpecial_None;
|
|
break;
|
|
|
|
default:
|
|
// don't recognize the character, so just append it
|
|
mValue += c;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
// we're in the middle of parsing a 4-character unicode value
|
|
// like \u5f39
|
|
case eParserSpecial_Unicode:
|
|
|
|
if(('0' <= c) && (c <= '9'))
|
|
mUnicodeValue =
|
|
(mUnicodeValue << 4) | (c - '0');
|
|
else if(('a' <= c) && (c <= 'f'))
|
|
mUnicodeValue =
|
|
(mUnicodeValue << 4) | (c - 'a' + 0x0a);
|
|
else if(('A' <= c) && (c <= 'F'))
|
|
mUnicodeValue =
|
|
(mUnicodeValue << 4) | (c - 'A' + 0x0a);
|
|
else {
|
|
// non-hex character. Append what we have, and move on.
|
|
mValue += mUnicodeValue;
|
|
mMinLength = mValue.Length();
|
|
mSpecialState = eParserSpecial_None;
|
|
|
|
// leave tokenStart at this unknown character, so it gets appended
|
|
tokenStart = cur;
|
|
|
|
// ensure parsing this non-hex character again
|
|
return PR_FALSE;
|
|
}
|
|
|
|
if (++mUnicodeValuesRead >= 4) {
|
|
tokenStart = cur+1;
|
|
mSpecialState = eParserSpecial_None;
|
|
mValue += mUnicodeValue;
|
|
mMinLength = mValue.Length();
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return PR_TRUE;
|
|
}
|
|
|
|
NS_METHOD nsPropertiesParser::SegmentWriter(nsIUnicharInputStream* aStream,
|
|
void* aClosure,
|
|
const PRUnichar *aFromSegment,
|
|
PRUint32 aToOffset,
|
|
PRUint32 aCount,
|
|
PRUint32 *aWriteCount)
|
|
{
|
|
nsPropertiesParser *parser =
|
|
static_cast<nsPropertiesParser *>(aClosure);
|
|
|
|
parser->ParseBuffer(aFromSegment, aCount);
|
|
|
|
*aWriteCount = aCount;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsPropertiesParser::ParseBuffer(const PRUnichar* aBuffer,
|
|
PRUint32 aBufferLength)
|
|
{
|
|
const PRUnichar* cur = aBuffer;
|
|
const PRUnichar* end = aBuffer + aBufferLength;
|
|
|
|
// points to the start/end of the current key or value
|
|
const PRUnichar* tokenStart = nsnull;
|
|
|
|
// if we're in the middle of parsing a key or value, make sure
|
|
// the current token points to the beginning of the current buffer
|
|
if (mState == eParserState_Key ||
|
|
mState == eParserState_Value) {
|
|
tokenStart = aBuffer;
|
|
}
|
|
|
|
nsAutoString oldValue;
|
|
|
|
while (cur != end) {
|
|
|
|
PRUnichar c = *cur;
|
|
|
|
switch (mState) {
|
|
case eParserState_AwaitingKey:
|
|
if (c == '#' || c == '!')
|
|
EnterCommentState();
|
|
|
|
else if (!IsWhiteSpace(c)) {
|
|
// not a comment, not whitespace, we must have found a key!
|
|
EnterKeyState();
|
|
tokenStart = cur;
|
|
}
|
|
break;
|
|
|
|
case eParserState_Key:
|
|
if (c == '=' || c == ':') {
|
|
mKey += Substring(tokenStart, cur);
|
|
WaitForValue();
|
|
}
|
|
break;
|
|
|
|
case eParserState_AwaitingValue:
|
|
if (IsEOL(c)) {
|
|
// no value at all! mimic the normal value-ending
|
|
EnterValueState();
|
|
FinishValueState(oldValue);
|
|
}
|
|
|
|
// ignore white space leading up to the value
|
|
else if (!IsWhiteSpace(c)) {
|
|
tokenStart = cur;
|
|
EnterValueState();
|
|
|
|
// make sure to handle this first character
|
|
if (ParseValueCharacter(c, cur, tokenStart, oldValue))
|
|
cur++;
|
|
// If the character isn't consumed, don't do cur++ and parse
|
|
// the character again. This can happen f.e. for char 'X' in sequence
|
|
// "\u00X". This character can be control character and must be
|
|
// processed again.
|
|
continue;
|
|
}
|
|
break;
|
|
|
|
case eParserState_Value:
|
|
if (ParseValueCharacter(c, cur, tokenStart, oldValue))
|
|
cur++;
|
|
// See few lines above for reason of doing this
|
|
continue;
|
|
|
|
case eParserState_Comment:
|
|
// stay in this state till we hit EOL
|
|
if (c == '\r' || c== '\n')
|
|
WaitForKey();
|
|
break;
|
|
}
|
|
|
|
// finally, advance to the next character
|
|
cur++;
|
|
}
|
|
|
|
// if we're still parsing the value and are in eParserSpecial_None, then
|
|
// append whatever we have..
|
|
if (mState == eParserState_Value && tokenStart &&
|
|
mSpecialState == eParserSpecial_None) {
|
|
mValue += Substring(tokenStart, cur);
|
|
}
|
|
// if we're still parsing the key, then append whatever we have..
|
|
else if (mState == eParserState_Key && tokenStart) {
|
|
mKey += Substring(tokenStart, cur);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsPersistentProperties::nsPersistentProperties()
|
|
: mIn(nsnull)
|
|
{
|
|
mSubclass = static_cast<nsIPersistentProperties*>(this);
|
|
mTable.ops = nsnull;
|
|
PL_INIT_ARENA_POOL(&mArena, "PersistentPropertyArena", 2048);
|
|
}
|
|
|
|
nsPersistentProperties::~nsPersistentProperties()
|
|
{
|
|
PL_FinishArenaPool(&mArena);
|
|
if (mTable.ops)
|
|
PL_DHashTableFinish(&mTable);
|
|
}
|
|
|
|
nsresult
|
|
nsPersistentProperties::Init()
|
|
{
|
|
if (!PL_DHashTableInit(&mTable, &property_HashTableOps, nsnull,
|
|
sizeof(PropertyTableEntry), 20)) {
|
|
mTable.ops = nsnull;
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_METHOD
|
|
nsPersistentProperties::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
|
|
{
|
|
if (aOuter)
|
|
return NS_ERROR_NO_AGGREGATION;
|
|
nsPersistentProperties* props = new nsPersistentProperties();
|
|
if (props == nsnull)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
NS_ADDREF(props);
|
|
nsresult rv = props->Init();
|
|
if (NS_SUCCEEDED(rv))
|
|
rv = props->QueryInterface(aIID, aResult);
|
|
|
|
NS_RELEASE(props);
|
|
return rv;
|
|
}
|
|
|
|
NS_IMPL_THREADSAFE_ISUPPORTS2(nsPersistentProperties, nsIPersistentProperties, nsIProperties)
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::Load(nsIInputStream *aIn)
|
|
{
|
|
nsresult rv = nsSimpleUnicharStreamFactory::GetInstance()->
|
|
CreateInstanceFromUTF8Stream(aIn, getter_AddRefs(mIn));
|
|
|
|
if (rv != NS_OK) {
|
|
NS_WARNING("Error creating UnicharInputStream");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
nsPropertiesParser parser(mSubclass);
|
|
|
|
PRUint32 nProcessed;
|
|
// If this 4096 is changed to some other value, make sure to adjust
|
|
// the bug121341.properties test file accordingly.
|
|
while (NS_SUCCEEDED(rv = mIn->ReadSegments(nsPropertiesParser::SegmentWriter, &parser, 4096, &nProcessed)) &&
|
|
nProcessed != 0);
|
|
mIn = nsnull;
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// We may have an unprocessed value at this point
|
|
// if the last line did not have a proper line ending.
|
|
if (parser.GetState() == eParserState_Value) {
|
|
nsAutoString oldValue;
|
|
parser.FinishValueState(oldValue);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::SetStringProperty(const nsACString& aKey,
|
|
const nsAString& aNewValue,
|
|
nsAString& aOldValue)
|
|
{
|
|
const nsAFlatCString& flatKey = PromiseFlatCString(aKey);
|
|
PropertyTableEntry *entry =
|
|
static_cast<PropertyTableEntry*>
|
|
(PL_DHashTableOperate(&mTable, flatKey.get(), PL_DHASH_ADD));
|
|
|
|
if (entry->mKey) {
|
|
aOldValue = entry->mValue;
|
|
NS_WARNING(nsPrintfCString(aKey.Length() + 30,
|
|
"the property %s already exists\n",
|
|
flatKey.get()).get());
|
|
}
|
|
|
|
entry->mKey = ArenaStrdup(flatKey, &mArena);
|
|
entry->mValue = ArenaStrdup(PromiseFlatString(aNewValue), &mArena);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::Save(nsIOutputStream* aOut, const nsACString& aHeader)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::Subclass(nsIPersistentProperties* aSubclass)
|
|
{
|
|
if (aSubclass) {
|
|
mSubclass = aSubclass;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::GetStringProperty(const nsACString& aKey,
|
|
nsAString& aValue)
|
|
{
|
|
const nsAFlatCString& flatKey = PromiseFlatCString(aKey);
|
|
|
|
PropertyTableEntry *entry =
|
|
static_cast<PropertyTableEntry*>
|
|
(PL_DHashTableOperate(&mTable, flatKey.get(), PL_DHASH_LOOKUP));
|
|
|
|
if (PL_DHASH_ENTRY_IS_FREE(entry))
|
|
return NS_ERROR_FAILURE;
|
|
|
|
aValue = entry->mValue;
|
|
return NS_OK;
|
|
}
|
|
|
|
static PLDHashOperator
|
|
AddElemToArray(PLDHashTable* table, PLDHashEntryHdr *hdr,
|
|
PRUint32 i, void *arg)
|
|
{
|
|
nsISupportsArray *propArray = (nsISupportsArray *) arg;
|
|
PropertyTableEntry* entry =
|
|
static_cast<PropertyTableEntry*>(hdr);
|
|
|
|
nsPropertyElement *element =
|
|
new nsPropertyElement(nsDependentCString(entry->mKey),
|
|
nsDependentString(entry->mValue));
|
|
if (!element)
|
|
return PL_DHASH_STOP;
|
|
|
|
propArray->InsertElementAt(element, i);
|
|
|
|
return PL_DHASH_NEXT;
|
|
}
|
|
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::Enumerate(nsISimpleEnumerator** aResult)
|
|
{
|
|
nsCOMPtr<nsISupportsArray> propArray;
|
|
nsresult rv = NS_NewISupportsArray(getter_AddRefs(propArray));
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// We know the necessary size; we can avoid growing it while adding elements
|
|
if (!propArray->SizeTo(mTable.entryCount))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// Step through hash entries populating a transient array
|
|
PRUint32 n =
|
|
PL_DHashTableEnumerate(&mTable, AddElemToArray, (void *)propArray);
|
|
if (n < mTable.entryCount)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
return NS_NewArrayEnumerator(aResult, propArray);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// XXX Some day we'll unify the nsIPersistentProperties interface with
|
|
// nsIProperties, but until now...
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::Get(const char* prop, const nsIID & uuid, void* *result)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::Set(const char* prop, nsISupports* value)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::Undefine(const char* prop)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::Has(const char* prop, PRBool *result)
|
|
{
|
|
PropertyTableEntry *entry =
|
|
static_cast<PropertyTableEntry*>
|
|
(PL_DHashTableOperate(&mTable, prop, PL_DHASH_LOOKUP));
|
|
|
|
*result = (entry && PL_DHASH_ENTRY_IS_BUSY(entry));
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPersistentProperties::GetKeys(PRUint32 *count, char ***keys)
|
|
{
|
|
return NS_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// PropertyElement
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
NS_METHOD
|
|
nsPropertyElement::Create(nsISupports *aOuter, REFNSIID aIID, void **aResult)
|
|
{
|
|
if (aOuter)
|
|
return NS_ERROR_NO_AGGREGATION;
|
|
nsPropertyElement* propElem = new nsPropertyElement();
|
|
if (propElem == nsnull)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
NS_ADDREF(propElem);
|
|
nsresult rv = propElem->QueryInterface(aIID, aResult);
|
|
NS_RELEASE(propElem);
|
|
return rv;
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS1(nsPropertyElement, nsIPropertyElement)
|
|
|
|
NS_IMETHODIMP
|
|
nsPropertyElement::GetKey(nsACString& aReturnKey)
|
|
{
|
|
aReturnKey = mKey;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPropertyElement::GetValue(nsAString& aReturnValue)
|
|
{
|
|
aReturnValue = mValue;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPropertyElement::SetKey(const nsACString& aKey)
|
|
{
|
|
mKey = aKey;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsPropertyElement::SetValue(const nsAString& aValue)
|
|
{
|
|
mValue = aValue;
|
|
return NS_OK;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|