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https://github.com/reactos/reactos.git
synced 2024-12-26 17:14:41 +00:00
- Implement RtlInitializeUnicodePrefix and RtlNextUnicodePrefix. The UnicodePrefix package is needed by MUP and NPFS drivers.
- Add some of the splay tree functions/macros to the NDK. svn path=/trunk/; revision=19033
This commit is contained in:
Alex Ionescu
parent
b4fc288d14
commit
ac26f7ca11
3 changed files with 189 additions and 28 deletions
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@ -19,6 +19,13 @@
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typedef PVOID PRTL_HEAP_PARAMETERS;
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typedef struct _RTL_SPLAY_LINKS
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{
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struct _RTL_SPLAY_LINKS *Parent;
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struct _RTL_SPLAY_LINKS *LeftChild;
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struct _RTL_SPLAY_LINKS *RightChild;
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} RTL_SPLAY_LINKS, *PRTL_SPLAY_LINKS;
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#if defined(USE_LPC6432)
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#define LPC_CLIENT_ID CLIENT_ID64
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#define LPC_SIZE_T ULONGLONG
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@ -14,8 +14,68 @@
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#include "extypes.h"
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#include "rtltypes.h"
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/* MACROS ********************************************************************/
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/* FIXME: Eventually move the ones in rtltypes.h here... */
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/*
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* Splay Tree Macros
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*/
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#define RtlIsLeftChild(Links) \
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(RtlLeftChild(RtlParent(Links)) == (PRTL_SPLAY_LINKS)(Links))
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#define RtlIsRoot(Links) \
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(RtlParent(Links) == (PRTL_SPLAY_LINKS)(Links))
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#define RtlLeftChild(Links) \
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(PRTL_SPLAY_LINKS)(Links)->LeftChild
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#define RtlParent(Links) \
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(PRTL_SPLAY_LINKS)(Links)->Parent
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/* PROTOTYPES ****************************************************************/
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/*
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* Splay Tree Functions
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*/
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NTSYSAPI
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PRTL_SPLAY_LINKS
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NTAPI
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RtlSplay(PRTL_SPLAY_LINKS Links);
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NTSYSAPI
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PRTL_SPLAY_LINKS
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NTAPI
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RtlDelete(PRTL_SPLAY_LINKS Links);
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NTSYSAPI
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VOID
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NTAPI
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RtlDeleteNoSplay(
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PRTL_SPLAY_LINKS Links,
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PRTL_SPLAY_LINKS *Root
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);
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NTSYSAPI
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PRTL_SPLAY_LINKS
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NTAPI
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RtlSubtreeSuccessor(PRTL_SPLAY_LINKS Links);
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NTSYSAPI
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PRTL_SPLAY_LINKS
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NTAPI
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RtlSubtreePredecessor(PRTL_SPLAY_LINKS Links);
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NTSYSAPI
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PRTL_SPLAY_LINKS
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NTAPI
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RtlRealSuccessor(PRTL_SPLAY_LINKS Links);
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NTSYSAPI
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PRTL_SPLAY_LINKS
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NTAPI
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RtlRealPredecessor(PRTL_SPLAY_LINKS Links);
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/*
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* Error and Exception Functions
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*/
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@ -2,8 +2,8 @@
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS system libraries
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* PURPOSE: Unicode Prefix implementation
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* FILE: lib/rtl/unicodeprfx.c
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* PROGRAMMER:
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* FILE: lib/rtl/unicodeprefix.c
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* PROGRAMMER: Alex Ionescu (alex@relsoft.net)
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*/
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/* INCLUDES *****************************************************************/
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@ -13,33 +13,62 @@
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#define NDEBUG
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#include <debug.h>
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/*
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* FIXME: Try to find the official names and add to NDK
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* Definitions come from fastfat driver.
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*/
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typedef USHORT NODE_TYPE_CODE;
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#define PFX_NTC_TABLE ((NODE_TYPE_CODE)0x0800)
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#define PFX_NTC_ROOT ((NODE_TYPE_CODE)0x0801)
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#define PFX_NTC_CHILD ((NODE_TYPE_CODE)0x0802)
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#define PFX_NTC_CASE_MATCH ((NODE_TYPE_CODE)0x0803)
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/* FUNCTIONS ***************************************************************/
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/*STATIC*/
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ULONG
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NTAPI
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ComputeUnicodeNameLength(IN PUNICODE_STRING UnicodeName)
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{
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ULONG Chars = UnicodeName->Length / sizeof(WCHAR);
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ULONG i, NamesFound = 1;
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/* Loop the string */
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for (i = 0; i < (Chars - 1); i++)
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{
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/* Check if we found a backslash, meaning another name */
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if (UnicodeName->Buffer[i] == '\\') NamesFound++;
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}
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/* Return the number of names found */
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return NamesFound;
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}
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/*
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* @unimplemented
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*/
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PUNICODE_PREFIX_TABLE_ENTRY
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NTAPI
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RtlFindUnicodePrefix (
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PUNICODE_PREFIX_TABLE PrefixTable,
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RtlFindUnicodePrefix(PUNICODE_PREFIX_TABLE PrefixTable,
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PUNICODE_STRING FullName,
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ULONG CaseInsensitiveIndex
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)
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ULONG CaseInsensitiveIndex)
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{
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UNIMPLEMENTED;
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return 0;
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}
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/*
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* @unimplemented
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* @implemented
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*/
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VOID
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NTAPI
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RtlInitializeUnicodePrefix (
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PUNICODE_PREFIX_TABLE PrefixTable
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)
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RtlInitializeUnicodePrefix(PUNICODE_PREFIX_TABLE PrefixTable)
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{
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UNIMPLEMENTED;
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/* Setup the table */
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PrefixTable->NameLength = 0;
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PrefixTable->LastNextEntry = NULL;
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PrefixTable->NodeTypeCode = PFX_NTC_TABLE;
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PrefixTable->NextPrefixTree = (PUNICODE_PREFIX_TABLE_ENTRY)PrefixTable;
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}
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/*
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@ -47,28 +76,95 @@ RtlInitializeUnicodePrefix (
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*/
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BOOLEAN
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NTAPI
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RtlInsertUnicodePrefix (
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PUNICODE_PREFIX_TABLE PrefixTable,
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RtlInsertUnicodePrefix(PUNICODE_PREFIX_TABLE PrefixTable,
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PUNICODE_STRING Prefix,
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PUNICODE_PREFIX_TABLE_ENTRY PrefixTableEntry
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)
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PUNICODE_PREFIX_TABLE_ENTRY PrefixTableEntry)
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{
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/*
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* implementation notes:
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* - get name length (number of names)
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* - init splay links
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* - find a matching tree
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* - if !found, insert a new NTC_ROOT entry and return TRUE;
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* - if found, loop tree and compare strings:
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* if equal, handle casematch/nomatch
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* if greater or lesser equal, then add left/right childs accordingly
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* - splay the tree
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*/
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UNIMPLEMENTED;
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return FALSE;
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}
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/*
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* @unimplemented
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* @implemented
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*/
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PUNICODE_PREFIX_TABLE_ENTRY
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NTAPI
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RtlNextUnicodePrefix (
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PUNICODE_PREFIX_TABLE PrefixTable,
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BOOLEAN Restart
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)
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RtlNextUnicodePrefix(PUNICODE_PREFIX_TABLE PrefixTable,
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BOOLEAN Restart)
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{
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UNIMPLEMENTED;
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return 0;
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PRTL_SPLAY_LINKS SplayLinks;
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PUNICODE_PREFIX_TABLE_ENTRY Entry;
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PUNICODE_PREFIX_TABLE_ENTRY CaseMatchEntry;
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/* We might need this entry 2/3rd of the time, so cache it now */
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CaseMatchEntry = PrefixTable->LastNextEntry->CaseMatch;
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/* Check if this is a restart or if we don't have a last entry */
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if ((Restart) || !(PrefixTable->LastNextEntry))
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{
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/* Get the next entry and validate it */
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Entry = PrefixTable->NextPrefixTree;
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if (Entry->NodeTypeCode == PFX_NTC_TABLE) return NULL;
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/* Now get the Splay Tree Links */
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SplayLinks = &Entry->Links;
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/* Loop until we get the first node in the tree */
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while (RtlLeftChild(SplayLinks)) SplayLinks = RtlLeftChild(SplayLinks);
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/* Get the entry from it */
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Entry = CONTAINING_RECORD(SplayLinks,
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UNICODE_PREFIX_TABLE_ENTRY,
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Links);
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}
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else if (CaseMatchEntry->NodeTypeCode == PFX_NTC_CASE_MATCH)
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{
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/* If the last entry was a Case Match, then return it */
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Entry = CaseMatchEntry;
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}
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else
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{
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/* Find the successor */
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SplayLinks = RtlRealSuccessor(&CaseMatchEntry->Links);
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if (!SplayLinks)
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{
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/* Didn't find one, we'll have to search the tree */
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SplayLinks = &PrefixTable->LastNextEntry->Links;
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/* Get the topmost node (root) */
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while (!RtlIsRoot(SplayLinks)) SplayLinks = RtlParent(SplayLinks);
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Entry = CONTAINING_RECORD(SplayLinks,
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UNICODE_PREFIX_TABLE_ENTRY,
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Links);
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/* Get its tree and make sure somethign is in it */
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Entry = Entry->NextPrefixTree;
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if (Entry->NameLength <= 0) return NULL;
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/* Select these new links and find the first node */
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while (RtlLeftChild(SplayLinks)) SplayLinks = RtlLeftChild(SplayLinks);
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}
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/* Get the entry from it */
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Entry = CONTAINING_RECORD(SplayLinks,
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UNICODE_PREFIX_TABLE_ENTRY,
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Links);
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}
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/* Save this entry as the last one returned, and return it */
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PrefixTable->LastNextEntry = Entry;
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return Entry;
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}
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/*
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@ -76,10 +172,8 @@ RtlNextUnicodePrefix (
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*/
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VOID
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NTAPI
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RtlRemoveUnicodePrefix (
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PUNICODE_PREFIX_TABLE PrefixTable,
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PUNICODE_PREFIX_TABLE_ENTRY PrefixTableEntry
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)
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RtlRemoveUnicodePrefix(PUNICODE_PREFIX_TABLE PrefixTable,
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PUNICODE_PREFIX_TABLE_ENTRY PrefixTableEntry)
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{
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UNIMPLEMENTED;
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}
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