system76-edk2/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/Edit.c

/** @file
  Main file for Edit shell Debug1 function.

  (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>
  Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved. <BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "UefiShellDebug1CommandsLib.h"
#include "TextEditor.h"

/**
  Function for 'edit' command.

  @param[in] ImageHandle  Handle to the Image (NULL if Internal).
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).
**/
SHELL_STATUS
EFIAPI
ShellCommandRunEdit (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS          Status;
  CHAR16              *Buffer;
  CHAR16              *ProblemParam;
  SHELL_STATUS        ShellStatus;
  LIST_ENTRY          *Package;
  CONST CHAR16        *Cwd;
  CHAR16              *Nfs;
  CHAR16              *Spot;
  CONST CHAR16        *TempParam;
//  SHELL_FILE_HANDLE   TempHandle;

  Buffer      = NULL;
  ShellStatus = SHELL_SUCCESS;
  Nfs         = NULL;

  //
  // initialize the shell lib (we must be in non-auto-init...)
  //
  Status = ShellInitialize();
  ASSERT_EFI_ERROR(Status);

  Status = CommandInit();
  ASSERT_EFI_ERROR(Status);

  //
  // parse the command line
  //
  Status = ShellCommandLineParse (EmptyParamList, &Package, &ProblemParam, TRUE);
  if (EFI_ERROR(Status)) {
    if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellDebug1HiiHandle, L"edit", ProblemParam);
      FreePool(ProblemParam);
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      ASSERT(FALSE);
    }
  } else {
    if (ShellCommandLineGetCount(Package) > 2) {
      ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellDebug1HiiHandle, L"edit");
      ShellStatus = SHELL_INVALID_PARAMETER;
    } else {
      Cwd = gEfiShellProtocol->GetCurDir(NULL);
      if (Cwd == NULL) {
        Cwd = ShellGetEnvironmentVariable(L"path");
        if (Cwd != NULL) {
          Nfs = StrnCatGrow(&Nfs, NULL, Cwd+3, 0);
          if (Nfs != NULL) {
            Spot = StrStr(Nfs, L";");
            if (Spot != NULL) {
              *Spot = CHAR_NULL;
            }
            Spot = StrStr(Nfs, L"\\");
            if (Spot != NULL) {
              Spot[1] = CHAR_NULL;
            }
            gEfiShellProtocol->SetCurDir(NULL, Nfs);
            FreePool(Nfs);
          }
        }
      }

      Status = MainEditorInit ();

      if (EFI_ERROR (Status)) {
        gST->ConOut->ClearScreen (gST->ConOut);
        gST->ConOut->EnableCursor (gST->ConOut, TRUE);
        ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_EDIT_MAIN_INIT_FAILED), gShellDebug1HiiHandle);
      } else {
        MainEditorBackup ();

        //
        // if editor launched with file named
        //
        if (ShellCommandLineGetCount(Package) == 2) {
          TempParam = ShellCommandLineGetRawValue(Package, 1);
          ASSERT(TempParam != NULL);
          FileBufferSetFileName (TempParam);
//          if (EFI_ERROR(ShellFileExists(MainEditor.FileBuffer->FileName))) {
//            Status = ShellOpenFileByName(MainEditor.FileBuffer->FileName, &TempHandle, EFI_FILE_MODE_CREATE|EFI_FILE_MODE_READ|EFI_FILE_MODE_WRITE, 0);
//            if (!EFI_ERROR(Status)) {
//              ShellCloseFile(&TempHandle);
//            }
//          }
        }

        Status = FileBufferRead (MainEditor.FileBuffer->FileName, FALSE);
        if (!EFI_ERROR (Status)) {
          MainEditorRefresh ();

          Status = MainEditorKeyInput ();
        }

        if (Status != EFI_OUT_OF_RESOURCES) {
          //
          // back up the status string
          //
          Buffer = CatSPrint (NULL, L"%s", StatusBarGetString());
        }

        MainEditorCleanup ();

        //
        // print editor exit code on screen
        //
        if (Status == EFI_SUCCESS) {
        } else if (Status == EFI_OUT_OF_RESOURCES) {
          ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_GEN_OUT_MEM), gShellDebug1HiiHandle, L"edit");
        } else {
          if (Buffer != NULL) {
            if (StrCmp (Buffer, L"") != 0) {
              //
              // print out the status string
              //
              ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_EDIT_MAIN_BUFFER), gShellDebug1HiiHandle, Buffer);
            } else {
              ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_EDIT_MAIN_UNKNOWN_EDITOR_ERR), gShellDebug1HiiHandle);
            }
          } else {
            ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN(STR_EDIT_MAIN_UNKNOWN_EDITOR_ERR), gShellDebug1HiiHandle);
          }
        }

        if (Status != EFI_OUT_OF_RESOURCES) {
          SHELL_FREE_NON_NULL (Buffer);
        }
      }
    }
    ShellCommandLineFreeVarList (Package);
  }
  return ShellStatus;
}