initial checkin - NOT PART OF BUILD
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jband%netscape.com
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a5f2a18401
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/* -*- 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
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* provisions of the GPL are applicable instead of those above.
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* If you wish to allow use of your version of this file only
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* under the terms of the GPL and not to allow others to use your
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* version of this file under the NPL, indicate your decision by
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* deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this
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* file under either the NPL or the GPL.
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*/
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/* Class to manage lookup of static names in a table. */
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#include "nsString.h"
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#include "nsStaticNameTable.h"
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nsStaticCaseInsensitiveNameTable::nsStaticCaseInsensitiveNameTable()
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: mNameArray(nsnull), mNameTable(nsnull), mCount(0)
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{
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MOZ_COUNT_CTOR(nsStaticCaseInsensitiveNameTable);
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}
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nsStaticCaseInsensitiveNameTable::~nsStaticCaseInsensitiveNameTable()
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{
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delete [] mNameArray;
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delete mNameTable;
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MOZ_COUNT_DTOR(nsStaticCaseInsensitiveNameTable);
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}
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PRBool
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nsStaticCaseInsensitiveNameTable::Init(const char* Names[], PRInt32 Count)
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{
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NS_ASSERTION(!mNameArray, "double Init");
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NS_ASSERTION(!mNameTable, "double Init");
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NS_ASSERTION(Names, "null name table");
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NS_ASSERTION(Count, "0 count");
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mCount = Count;
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mNameArray = new nsCString[Count];
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// XXX best bucket count heuristic?
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mNameTable = new nsHashtable(Count<16 ? Count : Count<128 ? Count/4 : 128);
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if (!mNameArray || !mNameTable) {
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return PR_FALSE;
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}
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for (PRInt32 index = 0; index < Count; ++index) {
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char* raw = (char*) Names[index];
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PRUint32 len = nsCRT::strlen(raw);
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nsStr* str = NS_STATIC_CAST(nsStr*, &mNameArray[index]);
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#ifdef DEBUG
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{
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// verify invarients of contents
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nsCAutoString temp1(raw);
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nsCAutoString temp2(raw);
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temp1.ToLowerCase();
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NS_ASSERTION(temp1.Equals(temp2), "upper case char in table");
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}
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#endif
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nsStr::Initialize(*str, raw, len, len, eOneByte, PR_FALSE);
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nsCStringKey key(raw, len, nsCStringKey::NEVER_OWN);
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mNameTable->Put(&key, (void*)(index+1)); // to make 0 != nsnull
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}
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return PR_TRUE;
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}
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inline PRInt32
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LookupLowercasedKeyword(const nsCString& aLowercasedKeyword,
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nsHashtable* aTable)
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{
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nsCStringKey key(aLowercasedKeyword);
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void* val = aTable->Get(&key);
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return val ? ((PRInt32)val) - 1 :
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nsStaticCaseInsensitiveNameTable::NOT_FOUND;
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}
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PRInt32
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nsStaticCaseInsensitiveNameTable::Lookup(const nsCString& aName)
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{
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NS_ASSERTION(mNameArray, "not inited");
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NS_ASSERTION(mNameTable, "not inited");
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NS_ASSERTION(mCount, "not inited");
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nsCAutoString strLower;
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aName.ToLowerCase(strLower);
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return LookupLowercasedKeyword(strLower, mNameTable);
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}
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PRInt32
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nsStaticCaseInsensitiveNameTable::Lookup(const nsString& aName)
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{
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NS_ASSERTION(mNameArray, "not inited");
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NS_ASSERTION(mNameTable, "not inited");
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NS_ASSERTION(mCount, "not inited");
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nsCAutoString strLower;
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strLower.AssignWithConversion(aName);
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strLower.ToLowerCase();
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return LookupLowercasedKeyword(strLower, mNameTable);
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}
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const nsCString&
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nsStaticCaseInsensitiveNameTable::GetStringValue(PRInt32 index)
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{
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NS_ASSERTION(mNameArray, "not inited");
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NS_ASSERTION(mNameTable, "not inited");
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NS_ASSERTION(mCount, "not inited");
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if ((NOT_FOUND < index) && (index < mCount)) {
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return mNameArray[index];
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} else {
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return mNullStr;
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}
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}
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@ -0,0 +1,79 @@
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/* -*- 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
|
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express oqr
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the
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* terms of the GNU Public License (the "GPL"), in which case the
|
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* provisions of the GPL are applicable instead of those above.
|
||||
* If you wish to allow use of your version of this file only
|
||||
* under the terms of the GPL and not to allow others to use your
|
||||
* version of this file under the NPL, indicate your decision by
|
||||
* deleting the provisions above and replace them with the notice
|
||||
* and other provisions required by the GPL. If you do not delete
|
||||
* the provisions above, a recipient may use your version of this
|
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* file under either the NPL or the GPL.
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||||
*/
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/* Classes to manage lookup of static names in a table. */
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#ifndef nsStaticNameTable_h___
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#define nsStaticNameTable_h___
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#include "nsHashtable.h"
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/* This class supports case insensitve lookup.
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*
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* It differs from atom tables:
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* - It supports case insensitive lookup.
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* - It has minimal footprint by not copying the string table.
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* - It does no locking.
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* - It returns zero based indexes and const nsCSring& as required by its
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* callers in the parser.
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* - It is not an xpcom interface - meant for fast lookup in static tables.
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*
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* ***REQUIREMENTS***
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* - It *requires* that all entries in the table be lowewcase only.
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* - It *requires* that the table of strings be in memory that lives at least
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* as long as this table object - typically a static string array.
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*/
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class NS_COM nsStaticCaseInsensitiveNameTable
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{
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public:
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enum { NOT_FOUND = -1 };
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PRBool Init(const char* Names[], PRInt32 Count);
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PRInt32 Lookup(const nsCString& aName);
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PRInt32 Lookup(const nsString& aName);
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const nsCString& GetStringValue(PRInt32 index);
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PRBool IsNullString(const nsCString& s) {return s == mNullStr;}
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nsStaticCaseInsensitiveNameTable();
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~nsStaticCaseInsensitiveNameTable();
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private:
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nsCString* mNameArray;
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nsHashtable* mNameTable;
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PRInt32 mCount;
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nsCString mNullStr;
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};
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#endif /* nsStaticNameTable_h___ */
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