/** @file
Main file for Parse shell level 2 function.
Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "UefiShellLevel2CommandsLib.h"
/**
Do the actual parsing of the file. the file should be SFO output from a
shell command or a similar format.
@param[in] FileName The filename to open.
@param[in] TableName The name of the table to find.
@param[in] ColumnIndex The column number to get.
@param[in] TableNameInstance Which instance of the table to get (row).
@param[in] ShellCommandInstance Which instance of the command to get.
@retval SHELL_NOT_FOUND The requested instance was not found.
@retval SHELL_SUCCESS The operation was successful.
**/
SHELL_STATUS
EFIAPI
PerformParsing(
IN CONST CHAR16 *FileName,
IN CONST CHAR16 *TableName,
IN CONST UINTN ColumnIndex,
IN CONST UINTN TableNameInstance,
IN CONST UINTN ShellCommandInstance
)
{
SHELL_FILE_HANDLE FileHandle;
EFI_STATUS Status;
BOOLEAN Ascii;
UINTN LoopVariable;
UINTN ColumnLoop;
CHAR16 *TempLine;
CHAR16 *ColumnPointer;
SHELL_STATUS ShellStatus;
CHAR16 *TempSpot;
ASSERT(FileName != NULL);
ASSERT(TableName != NULL);
ShellStatus = SHELL_SUCCESS;
Status = ShellOpenFileByName(FileName, &FileHandle, EFI_FILE_MODE_READ, 0);
if (EFI_ERROR(Status)) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_FILE_OPEN_FAIL), gShellLevel2HiiHandle, FileName);
ShellStatus = SHELL_NOT_FOUND;
} else {
for (LoopVariable = 0 ; LoopVariable < ShellCommandInstance && !ShellFileHandleEof(FileHandle);) {
TempLine = ShellFileHandleReturnLine(FileHandle, &Ascii);
if (TempLine == NULL) {
break;
}
if (StrStr(TempLine, L"ShellCommand, \"") == TempLine) {
LoopVariable++;
}
SHELL_FREE_NON_NULL(TempLine);
}
if (LoopVariable == ShellCommandInstance) {
LoopVariable = 0;
while(1) {
TempLine = ShellFileHandleReturnLine(FileHandle, &Ascii);
if ( TempLine == NULL
|| *TempLine == CHAR_NULL
|| StrStr(TempLine, L"ShellCommand, \"") == TempLine
){
SHELL_FREE_NON_NULL(TempLine);
break;
}
if (StrStr(TempLine, TableName) == TempLine) {
LoopVariable++;
}
if ( LoopVariable == TableNameInstance
|| (TableNameInstance == (UINTN)-1 && StrStr(TempLine, TableName) == TempLine)
){
for (ColumnLoop = 1, ColumnPointer = TempLine; ColumnLoop < ColumnIndex && ColumnPointer != NULL && *ColumnPointer != CHAR_NULL; ColumnLoop++) {
ColumnPointer = StrStr(ColumnPointer, L",");
if (ColumnPointer != NULL && *ColumnPointer != CHAR_NULL){
ColumnPointer++;
}
}
if (ColumnLoop == ColumnIndex) {
ASSERT(ColumnPointer != NULL);
TempSpot = StrStr(ColumnPointer, L",");
if (TempSpot != NULL) {
*TempSpot = CHAR_NULL;
}
while (ColumnPointer != NULL && *ColumnPointer != CHAR_NULL && ColumnPointer[0] == L' '){
ColumnPointer++;
}
if (ColumnPointer != NULL && *ColumnPointer != CHAR_NULL && ColumnPointer[0] == L'\"'){
ColumnPointer++;
}
if (ColumnPointer != NULL && *ColumnPointer != CHAR_NULL && ColumnPointer[StrLen(ColumnPointer)-1] == L'\"'){
ColumnPointer[StrLen(ColumnPointer)-1] = CHAR_NULL;
}
ShellPrintEx(-1, -1, L"%s\r\n", ColumnPointer);
}
}
SHELL_FREE_NON_NULL(TempLine);
}
}
}
return (ShellStatus);
}
STATIC CONST SHELL_PARAM_ITEM ParamList[] = {
{L"-i", TypeValue},
{L"-s", TypeValue},
{NULL, TypeMax}
};
/**
Function for 'parse' 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
ShellCommandRunParse (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
LIST_ENTRY *Package;
CHAR16 *ProblemParam;
CONST CHAR16 *FileName;
CONST CHAR16 *TableName;
CONST CHAR16 *ColumnString;
SHELL_STATUS ShellStatus;
UINTN ShellCommandInstance;
UINTN TableNameInstance;
ShellStatus = SHELL_SUCCESS;
ProblemParam = NULL;
//
// initialize the shell lib (we must be in non-auto-init...)
//
Status = ShellInitialize();
ASSERT_EFI_ERROR(Status);
//
// parse the command line
//
Status = ShellCommandLineParse (ParamList, &Package, &ProblemParam, TRUE);
if (EFI_ERROR(Status)) {
if (Status == EFI_VOLUME_CORRUPTED && ProblemParam != NULL) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_PROBLEM), gShellLevel2HiiHandle, ProblemParam);
FreePool(ProblemParam);
ShellStatus = SHELL_INVALID_PARAMETER;
} else {
ASSERT(FALSE);
}
} else {
if (ShellCommandLineGetCount(Package) < 4) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel2HiiHandle);
ShellStatus = SHELL_INVALID_PARAMETER;
} else if (ShellCommandLineGetCount(Package) > 4) {
ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel2HiiHandle);
ShellStatus = SHELL_INVALID_PARAMETER;
} else {
FileName = ShellCommandLineGetRawValue(Package, 1);
TableName = ShellCommandLineGetRawValue(Package, 2);
ColumnString = ShellCommandLineGetRawValue(Package, 3);
if (ShellCommandLineGetValue(Package, L"-i") == NULL) {
TableNameInstance = (UINTN)-1;
} else {
TableNameInstance = ShellStrToUintn(ShellCommandLineGetValue(Package, L"-i"));
}
if (ShellCommandLineGetValue(Package, L"-s") == NULL) {
ShellCommandInstance = 1;
} else {
ShellCommandInstance = ShellStrToUintn(ShellCommandLineGetValue(Package, L"-s"));
}
ShellStatus = PerformParsing(FileName, TableName, ShellStrToUintn(ColumnString), TableNameInstance, ShellCommandInstance);
}
}
//
// free the command line package
//
ShellCommandLineFreeVarList (Package);
return (ShellStatus);
}