reactos/base/setup/lib/genlist.c
Hermès Bélusca-Maïto 3a19ee6a96
[SETUPLIB][USETUP] Introduce a 'SetupLib' library. CORE-13544
- Create the beginnings of a "setuplib" library, whose aim is to be shared between the (currently existing) 1st-stage text-mode installer, and the (future) 1st-stage GUI installer.
- Finish to split the GenList and PartList codes into their UI part, which remain in usetup, and their algorithmic part, which go into setuplib.
- Move SetMountedDeviceValue into the PartList module.
- Split the FileSystem list code into its UI and the algorithmic part (which goes into setuplib under the name fsutil.c).
  * The algo part is meant to be able to manage the filesystems available on the running system, similarly to what is mostly done (in scattered form) in fmifs, format, chkdsk / autochk codes...
    It also manages the partition filesystem recognition, using OS routines.
  * The UI part manages the FS list as it appears on screen, showing only the possible FSes that can be used to format the selected partition (a bit similar to what we do in the shell32's drive.c, etc...).
- Adapt the calling code to these changes.
- Remove some "host" code that was dating back from the dark old times.

svn path=/branches/setup_improvements/; revision=74570
svn path=/branches/setup_improvements/; revision=74659
2018-05-27 20:18:50 +02:00

183 lines
3.9 KiB
C

/*
* PROJECT: ReactOS Setup Library
* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
* PURPOSE: Generic list functions
* COPYRIGHT: Copyright 2004-2018 Eric Kohl
* Copyright 2008-2018 Christoph von Wittich <christoph at reactos.org>
*/
/* INCLUDES *****************************************************************/
#include "precomp.h"
#include "genlist.h"
#define NDEBUG
#include <debug.h>
/* FUNCTIONS ****************************************************************/
PGENERIC_LIST
CreateGenericList(VOID)
{
PGENERIC_LIST List;
List = (PGENERIC_LIST)RtlAllocateHeap(ProcessHeap,
0,
sizeof(GENERIC_LIST));
if (List == NULL)
return NULL;
InitializeListHead(&List->ListHead);
List->NumOfEntries = 0;
List->CurrentEntry = NULL;
List->BackupEntry = NULL;
return List;
}
VOID
DestroyGenericList(
IN OUT PGENERIC_LIST List,
IN BOOLEAN FreeUserData)
{
PGENERIC_LIST_ENTRY ListEntry;
PLIST_ENTRY Entry;
/* Release list entries */
while (!IsListEmpty(&List->ListHead))
{
Entry = RemoveHeadList(&List->ListHead);
ListEntry = CONTAINING_RECORD(Entry, GENERIC_LIST_ENTRY, Entry);
/* Release user data */
if (FreeUserData && ListEntry->UserData != NULL)
RtlFreeHeap(ProcessHeap, 0, ListEntry->UserData);
/* Release list entry */
RtlFreeHeap(ProcessHeap, 0, ListEntry);
}
/* Release list head */
RtlFreeHeap(ProcessHeap, 0, List);
}
BOOLEAN
AppendGenericListEntry(
IN OUT PGENERIC_LIST List,
IN PCHAR Text,
IN PVOID UserData,
IN BOOLEAN Current)
{
PGENERIC_LIST_ENTRY Entry;
Entry = (PGENERIC_LIST_ENTRY)RtlAllocateHeap(ProcessHeap,
0,
sizeof(GENERIC_LIST_ENTRY) + strlen(Text));
if (Entry == NULL)
return FALSE;
strcpy (Entry->Text, Text);
Entry->List = List;
Entry->UserData = UserData;
InsertTailList(&List->ListHead, &Entry->Entry);
List->NumOfEntries++;
if (Current || List->CurrentEntry == NULL)
{
List->CurrentEntry = Entry;
}
return TRUE;
}
VOID
SetCurrentListEntry(
IN PGENERIC_LIST List,
IN PGENERIC_LIST_ENTRY Entry)
{
if (Entry->List != List)
return;
List->CurrentEntry = Entry;
}
PGENERIC_LIST_ENTRY
GetCurrentListEntry(
IN PGENERIC_LIST List)
{
return List->CurrentEntry;
}
PGENERIC_LIST_ENTRY
GetFirstListEntry(
IN PGENERIC_LIST List)
{
PLIST_ENTRY Entry = List->ListHead.Flink;
if (Entry == &List->ListHead)
return NULL;
return CONTAINING_RECORD(Entry, GENERIC_LIST_ENTRY, Entry);
}
PGENERIC_LIST_ENTRY
GetNextListEntry(
IN PGENERIC_LIST_ENTRY Entry)
{
PLIST_ENTRY Next = Entry->Entry.Flink;
if (Next == &Entry->List->ListHead)
return NULL;
return CONTAINING_RECORD(Next, GENERIC_LIST_ENTRY, Entry);
}
PVOID
GetListEntryUserData(
IN PGENERIC_LIST_ENTRY Entry)
{
return Entry->UserData;
}
LPCSTR
GetListEntryText(
IN PGENERIC_LIST_ENTRY Entry)
{
return Entry->Text;
}
ULONG
GetNumberOfListEntries(
IN PGENERIC_LIST List)
{
return List->NumOfEntries;
}
VOID
SaveGenericListState(
IN PGENERIC_LIST List)
{
List->BackupEntry = List->CurrentEntry;
}
VOID
RestoreGenericListState(
IN PGENERIC_LIST List)
{
List->CurrentEntry = List->BackupEntry;
}
BOOLEAN
GenericListHasSingleEntry(
IN PGENERIC_LIST List)
{
if (!IsListEmpty(&List->ListHead) && List->ListHead.Flink == List->ListHead.Blink)
return TRUE;
/* if both list head pointers (which normally point to the first and last list member, respectively)
point to the same entry then it means that there's just a single thing in there, otherwise... false! */
return FALSE;
}
/* EOF */