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#include <Library/UefiLib.h>
#include <Library/DebugLib.h>
#include <Library/ShellLib.h>
#include <Library/BaseLib.h>
#include <Library/MemoryAllocationLib.h>
#include "dir.h"
struct dir_list *dirl_alloc(CHAR16 *search_path, CONST UINT64 attr)
{
EFI_STATUS status = EFI_SUCCESS;
EFI_SHELL_FILE_INFO *list_head = NULL, *node = NULL;
UINTN length = 0;
struct dir_list *dl;
status = ShellOpenFileMetaArg(search_path, EFI_FILE_MODE_READ, &list_head);
if(EFI_ERROR(status))
return NULL;
for(node = (EFI_SHELL_FILE_INFO *)GetFirstNode(&list_head->Link);
!IsNull(&list_head->Link, &node->Link);
node = (EFI_SHELL_FILE_INFO *)GetNextNode(&list_head->Link, &node->Link))
{
ASSERT(node != NULL);
ASSERT(node->Info != NULL);
ASSERT((node->Info->Attribute & EFI_FILE_VALID_ATTR) == node->Info->Attribute);
if((node->Info->Attribute & attr) != attr ||
StrCmp(node->FileName, L".") == 0) {
EFI_SHELL_FILE_INFO *tmp;
tmp = (EFI_SHELL_FILE_INFO *)GetPreviousNode(&list_head->Link, &node->Link);
// I have stolen code below in the source code of InternalFreeShellFileInfoNode():
RemoveEntryList(&node->Link);
FreePool((VOID*)node->Info);
FreePool((VOID*)node->FileName);
FreePool((VOID*)node->FullName);
gEfiShellProtocol->CloseFile(node->Handle);
FreePool(node);
node = tmp;
continue;
}
length++;
}
dl = AllocatePool(sizeof(struct dir_list));
if(!dl) {
ShellCloseFileMetaArg(&list_head);
return NULL;
}
dl->list_head = list_head;
dl->len = length;
return dl;
}
VOID dirl_release(struct dir_list *dl)
{
if(dl->list_head)
ShellCloseFileMetaArg(&dl->list_head);
FreePool(dl);
}
struct dir_list *scandir(CONST CHAR16 *search_path, CONST CHAR16 *wildcard,
CONST UINT64 attr)
{
UINTN i, path_size = 0;
CHAR16 *path = NULL;
struct dir_list *list;
path = StrnCatGrow(&path, &path_size, search_path, 0);
if(!path)
return NULL;
i = StrLen(path) - 1;
if(path[i] != L'\\' && path[i] != L'/')
path = StrnCatGrow(&path, &path_size, L"\\", 0);
path = StrnCatGrow(&path, &path_size, wildcard, 0);
if(!path)
return NULL;
PathCleanUpDirectories(path);
list = dirl_alloc(path, attr);
SHELL_FREE_NON_NULL(path);
return list;
}
EFI_SHELL_FILE_INFO *dirl_getn(struct dir_list *dl, UINTN n)
{
UINTN i = 1;
EFI_SHELL_FILE_INFO *list_head, *node;
list_head = dl->list_head;
if(n < 1 || n > dl->len)
return NULL;
node = (EFI_SHELL_FILE_INFO *)GetFirstNode(&list_head->Link);
while(!IsNull(&list_head->Link, &node->Link) && i != n) {
node = (EFI_SHELL_FILE_INFO *)GetNextNode(&list_head->Link, &node->Link);
i++;
}
return node;
}
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