diff options
Diffstat (limited to 'ShellPkg/Library/UefiShellLevel1CommandsLib/If.c')
| -rw-r--r-- | ShellPkg/Library/UefiShellLevel1CommandsLib/If.c | 962 |
1 files changed, 962 insertions, 0 deletions
diff --git a/ShellPkg/Library/UefiShellLevel1CommandsLib/If.c b/ShellPkg/Library/UefiShellLevel1CommandsLib/If.c new file mode 100644 index 0000000000..3376329622 --- /dev/null +++ b/ShellPkg/Library/UefiShellLevel1CommandsLib/If.c @@ -0,0 +1,962 @@ +/** @file
+ Main file for If and else shell level 1 function.
+
+ Copyright (c) 2009 - 2010, 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 "UefiShellLevel1CommandsLib.h"
+#include <Library/PrintLib.h>
+
+
+
+
+typedef enum {
+ END_TAG_OR,
+ END_TAG_AND,
+ END_TAG_THEN,
+ END_TAG_MAX
+} END_TAG_TYPE;
+
+typedef enum {
+ OPERATOR_GT,
+ OPERATOR_LT,
+ OPERATOR_EQ,
+ OPERATOR_NE,
+ OPERATOR_GE,
+ OPERATOR_LE,
+ OPERATOR_UGT,
+ OPERATOR_ULT,
+ OPERATOR_UGE,
+ OPERATOR_ULE,
+ OPERATOR_MAX
+} BIN_OPERATOR_TYPE;
+
+BOOLEAN
+EFIAPI
+IsNextFragment (
+ IN CONST CHAR16 **Statement,
+ IN CONST CHAR16 *Fragment
+ )
+{
+ CHAR16 *Tester;
+
+ Tester = NULL;
+
+ Tester = StrnCatGrow(&Tester, NULL, *Statement, StrLen(Fragment));
+ ASSERT(Tester != NULL);
+ Tester[StrLen(Fragment)] = CHAR_NULL;
+ if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ (CHAR16*)Fragment,
+ Tester) == 0) {
+ //
+ // increment the string pointer to the end of what we found and then chop off spaces...
+ //
+ *Statement+=StrLen(Fragment);
+ while (*Statement[0] == L' ') {
+ *Statement++;
+ }
+ FreePool(Tester);
+ return (TRUE);
+ }
+ FreePool(Tester);
+ return (FALSE);
+}
+
+BOOLEAN
+EFIAPI
+IsValidProfile (
+ IN CONST CHAR16 *String
+ )
+{
+ CONST CHAR16 *ProfilesString;
+ CONST CHAR16 *TempLocation;
+
+ ProfilesString = ShellGetEnvironmentVariable(L"profiles");
+ TempLocation = StrStr(ProfilesString, String);
+ if ((TempLocation != NULL) && (*(TempLocation-1) == L';') && (*(TempLocation+StrLen(String)) == L';')) {
+ return (TRUE);
+ }
+ return (FALSE);
+}
+
+BOOLEAN
+EFIAPI
+TestOperation (
+ IN CONST CHAR16 *Compare1,
+ IN CONST CHAR16 *Compare2,
+ IN CONST BIN_OPERATOR_TYPE BinOp,
+ IN CONST BOOLEAN CaseInsensitive,
+ IN CONST BOOLEAN ForceStringCompare
+ )
+{
+ INTN Cmp1;
+ INTN Cmp2;
+
+ //
+ // "Compare1 BinOp Compare2"
+ //
+ switch (BinOp) {
+ case OPERATOR_UGT:
+ case OPERATOR_GT:
+ if (ForceStringCompare || !ShellIsHexOrDecimalNumber(Compare1, FALSE, FALSE) || !ShellIsHexOrDecimalNumber(Compare2, FALSE, FALSE)) {
+ //
+ // string compare
+ //
+ if ((CaseInsensitive && StringNoCaseCompare(&Compare1, &Compare2) > 0) || (StringCompare(&Compare1, &Compare2) > 0)) {
+ return (TRUE);
+ }
+ } else {
+ //
+ // numeric compare
+ //
+ if (Compare1[0] == L'-') {
+ Cmp1 = 0 - (INTN)StrDecimalToUintn(Compare1+1);
+ } else {
+ Cmp1 = (INTN)StrDecimalToUintn(Compare1);
+ }
+ if (Compare2[0] == L'-') {
+ Cmp2 = 0 - (INTN)StrDecimalToUintn(Compare2+1);
+ } else {
+ Cmp2 = (INTN)StrDecimalToUintn(Compare2);
+ }
+ if (BinOp == OPERATOR_GT) {
+ if (Cmp1 > Cmp2) {
+ return (TRUE);
+ }
+ } else {
+ if ((UINTN)Cmp1 > (UINTN)Cmp2) {
+ return (TRUE);
+ }
+ }
+ }
+ return (FALSE);
+ break;
+ case OPERATOR_ULT:
+ case OPERATOR_LT:
+ if (ForceStringCompare || !ShellIsHexOrDecimalNumber(Compare1, FALSE, FALSE) || !ShellIsHexOrDecimalNumber(Compare2, FALSE, FALSE)) {
+ //
+ // string compare
+ //
+ if ((CaseInsensitive && StringNoCaseCompare(&Compare1, &Compare2) < 0) || (StringCompare(&Compare1, &Compare2) < 0)) {
+ return (TRUE);
+ }
+ } else {
+ //
+ // numeric compare
+ //
+ if (Compare1[0] == L'-') {
+ Cmp1 = 0 - (INTN)StrDecimalToUintn(Compare1+1);
+ } else {
+ Cmp1 = (INTN)StrDecimalToUintn(Compare1);
+ }
+ if (Compare2[0] == L'-') {
+ Cmp2 = 0 - (INTN)StrDecimalToUintn(Compare2+1);
+ } else {
+ Cmp2 = (INTN)StrDecimalToUintn(Compare2);
+ }
+ if (BinOp == OPERATOR_LT) {
+ if (Cmp1 < Cmp2) {
+ return (TRUE);
+ }
+ } else {
+ if ((UINTN)Cmp1 < (UINTN)Cmp2) {
+ return (TRUE);
+ }
+ }
+
+ }
+ return (FALSE);
+ break;
+ case OPERATOR_EQ:
+ if (ForceStringCompare || !ShellIsHexOrDecimalNumber(Compare1, FALSE, FALSE) || !ShellIsHexOrDecimalNumber(Compare2, FALSE, FALSE)) {
+ //
+ // string compare
+ //
+ if ((CaseInsensitive && StringNoCaseCompare(&Compare1, &Compare2) == 0) || (StringCompare(&Compare1, &Compare2) == 0)) {
+ return (TRUE);
+ }
+ } else {
+ //
+ // numeric compare
+ //
+ if (Compare1[0] == L'-') {
+ Cmp1 = 0 - (INTN)ShellStrToUintn(Compare1+1);
+ } else {
+ Cmp1 = (INTN)ShellStrToUintn(Compare1);
+ }
+ if (Compare2[0] == L'-') {
+ Cmp2 = 0 - (INTN)ShellStrToUintn(Compare2+1);
+ } else {
+ Cmp2 = (INTN)ShellStrToUintn(Compare2);
+ }
+ if (Cmp1 == Cmp2) {
+ return (TRUE);
+ }
+ }
+ return (FALSE);
+ break;
+ case OPERATOR_NE:
+ if (ForceStringCompare || !ShellIsHexOrDecimalNumber(Compare1, FALSE, FALSE) || !ShellIsHexOrDecimalNumber(Compare2, FALSE, FALSE)) {
+ //
+ // string compare
+ //
+ if ((CaseInsensitive && StringNoCaseCompare(&Compare1, &Compare2) != 0) || (StringCompare(&Compare1, &Compare2) != 0)) {
+ return (TRUE);
+ }
+ } else {
+ //
+ // numeric compare
+ //
+ if (Compare1[0] == L'-') {
+ Cmp1 = 0 - (INTN)StrDecimalToUintn(Compare1+1);
+ } else {
+ Cmp1 = (INTN)StrDecimalToUintn(Compare1);
+ }
+ if (Compare2[0] == L'-') {
+ Cmp2 = 0 - (INTN)StrDecimalToUintn(Compare2+1);
+ } else {
+ Cmp2 = (INTN)StrDecimalToUintn(Compare2);
+ }
+ if (Cmp1 != Cmp2) {
+ return (TRUE);
+ }
+ }
+ return (FALSE);
+ break;
+ case OPERATOR_UGE:
+ case OPERATOR_GE:
+ if (ForceStringCompare || !ShellIsHexOrDecimalNumber(Compare1, FALSE, FALSE) || !ShellIsHexOrDecimalNumber(Compare2, FALSE, FALSE)) {
+ //
+ // string compare
+ //
+ if ((CaseInsensitive && StringNoCaseCompare(&Compare1, &Compare2) >= 0) || (StringCompare(&Compare1, &Compare2) >= 0)) {
+ return (TRUE);
+ }
+ } else {
+ //
+ // numeric compare
+ //
+ if (Compare1[0] == L'-') {
+ Cmp1 = 0 - (INTN)StrDecimalToUintn(Compare1+1);
+ } else {
+ Cmp1 = (INTN)StrDecimalToUintn(Compare1);
+ }
+ if (Compare2[0] == L'-') {
+ Cmp2 = 0 - (INTN)StrDecimalToUintn(Compare2+1);
+ } else {
+ Cmp2 = (INTN)StrDecimalToUintn(Compare2);
+ }
+ if (BinOp == OPERATOR_GE) {
+ if (Cmp1 >= Cmp2) {
+ return (TRUE);
+ }
+ } else {
+ if ((UINTN)Cmp1 >= (UINTN)Cmp2) {
+ return (TRUE);
+ }
+ }
+ }
+ return (FALSE);
+ break;
+ case OPERATOR_LE:
+ case OPERATOR_ULE:
+ if (ForceStringCompare || !ShellIsHexOrDecimalNumber(Compare1, FALSE, FALSE) || !ShellIsHexOrDecimalNumber(Compare2, FALSE, FALSE)) {
+ //
+ // string compare
+ //
+ if ((CaseInsensitive && StringNoCaseCompare(&Compare1, &Compare2) <= 0) || (StringCompare(&Compare1, &Compare2) <= 0)) {
+ return (TRUE);
+ }
+ } else {
+ //
+ // numeric compare
+ //
+ if (Compare1[0] == L'-') {
+ Cmp1 = 0 - (INTN)StrDecimalToUintn(Compare1+1);
+ } else {
+ Cmp1 = (INTN)StrDecimalToUintn(Compare1);
+ }
+ if (Compare2[0] == L'-') {
+ Cmp2 = 0 - (INTN)StrDecimalToUintn(Compare2+1);
+ } else {
+ Cmp2 = (INTN)StrDecimalToUintn(Compare2);
+ }
+ if (BinOp == OPERATOR_LE) {
+ if (Cmp1 <= Cmp2) {
+ return (TRUE);
+ }
+ } else {
+ if ((UINTN)Cmp1 <= (UINTN)Cmp2) {
+ return (TRUE);
+ }
+ }
+ }
+ return (FALSE);
+ break;
+ }
+ ASSERT(FALSE);
+ return (FALSE);
+}
+
+EFI_STATUS
+EFIAPI
+ProcessStatement (
+ IN OUT BOOLEAN *PassingState,
+ IN UINTN StartParameterNumber,
+ IN UINTN EndParameterNumber,
+ IN CONST END_TAG_TYPE OperatorToUse,
+ IN CONST BOOLEAN CaseInsensitive,
+ IN CONST BOOLEAN ForceStringCompare
+ )
+{
+ EFI_STATUS Status;
+ BOOLEAN OperationResult;
+ BOOLEAN NotPresent;
+ CHAR16 *StatementWalker;
+ BIN_OPERATOR_TYPE BinOp;
+ CHAR16 *Compare1;
+ CHAR16 *Compare2;
+ CHAR16 HexString[20];
+ CHAR16 *TempSpot;
+
+ ASSERT((END_TAG_TYPE)OperatorToUse != END_TAG_THEN);
+
+ Status = EFI_SUCCESS;
+ BinOp = OPERATOR_MAX;
+ OperationResult = FALSE;
+ StatementWalker = gEfiShellParametersProtocol->Argv[StartParameterNumber];
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"not")) {
+ NotPresent = TRUE;
+ StatementWalker = gEfiShellParametersProtocol->Argv[++StartParameterNumber];
+ } else {
+ NotPresent = FALSE;
+ }
+
+ //
+ // now check for 'boolfunc' operators
+ //
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"isint")) {
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && StatementWalker[StrLen(StatementWalker)-1] == L')') {
+ StatementWalker[StrLen(StatementWalker)-1] = CHAR_NULL;
+ OperationResult = ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE);
+ } else {
+ Status = EFI_INVALID_PARAMETER;
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"isint");
+ }
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"exists") || IsNextFragment((CONST CHAR16**)(&StatementWalker), L"exist")) {
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && StatementWalker[StrLen(StatementWalker)-1] == L')') {
+ StatementWalker[StrLen(StatementWalker)-1] = CHAR_NULL;
+ //
+ // is what remains a file in CWD???
+ //
+ OperationResult = (BOOLEAN)(ShellFileExists(StatementWalker)==EFI_SUCCESS);
+ } else if (StatementWalker[0] == CHAR_NULL && StartParameterNumber+1 == EndParameterNumber) {
+ OperationResult = (BOOLEAN)(ShellFileExists(gEfiShellParametersProtocol->Argv[++StartParameterNumber])==EFI_SUCCESS);
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"exist(s)");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"available")) {
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && StatementWalker[StrLen(StatementWalker)-1] == L')') {
+ StatementWalker[StrLen(StatementWalker)-1] = CHAR_NULL;
+ //
+ // is what remains a file in the CWD or path???
+ //
+ OperationResult = (BOOLEAN)(ShellIsFileInPath(StatementWalker)==EFI_SUCCESS);
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"available");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"profile")) {
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && StatementWalker[StrLen(StatementWalker)-1] == L')') {
+ //
+ // Chop off that ')'
+ //
+ StatementWalker[StrLen(StatementWalker)-1] = CHAR_NULL;
+ OperationResult = IsValidProfile(StatementWalker);
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"profile");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else if (StartParameterNumber+1 >= EndParameterNumber) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, gEfiShellParametersProtocol->Argv[StartParameterNumber]);
+ Status = EFI_INVALID_PARAMETER;
+ } else {
+ //
+ // must be 'item binop item' style
+ //
+ Compare1 = NULL;
+ Compare2 = NULL;
+ BinOp = OPERATOR_MAX;
+
+ //
+ // get the first item
+ //
+ StatementWalker = gEfiShellParametersProtocol->Argv[StartParameterNumber];
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"efierror")) {
+ TempSpot = StrStr(StatementWalker, L")");
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ *TempSpot = CHAR_NULL;
+ if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
+ UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT);
+ ASSERT(Compare1 == NULL);
+ Compare1 = StrnCatGrow(&Compare1, NULL, HexString, 0);
+ StatementWalker += StrLen(StatementWalker) + 1;
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"efierror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"efierror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"pierror")) {
+ TempSpot = StrStr(StatementWalker, L")");
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ *TempSpot = CHAR_NULL;
+ if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
+ UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT|(MAX_BIT>>2));
+ ASSERT(Compare1 == NULL);
+ Compare1 = StrnCatGrow(&Compare1, NULL, HexString, 0);
+ StatementWalker += StrLen(StatementWalker) + 1;
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"pierror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"pierror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"oemerror")) {
+ TempSpot = StrStr(StatementWalker, L")");
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ TempSpot = CHAR_NULL;
+ if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
+ UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT|(MAX_BIT>>1));
+ ASSERT(Compare1 == NULL);
+ Compare1 = StrnCatGrow(&Compare1, NULL, HexString, 0);
+ StatementWalker += StrLen(StatementWalker) + 1;
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"oemerror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"oemerror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else {
+ ASSERT(Compare1 == NULL);
+ if (EndParameterNumber - StartParameterNumber > 2) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_STARTING), gShellLevel1HiiHandle, gEfiShellParametersProtocol->Argv[StartParameterNumber+2]);
+ Status = EFI_INVALID_PARAMETER;
+ } else {
+ //
+ // must be a raw string
+ //
+ Compare1 = StrnCatGrow(&Compare1, NULL, StatementWalker, 0);
+ }
+ }
+
+ //
+ // get the operator
+ //
+ ASSERT(StartParameterNumber+1<EndParameterNumber);
+ StatementWalker = gEfiShellParametersProtocol->Argv[StartParameterNumber+1];
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"gt")) {
+ BinOp = OPERATOR_GT;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"lt")) {
+ BinOp = OPERATOR_LT;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"eq")) {
+ BinOp = OPERATOR_EQ;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ne")) {
+ BinOp = OPERATOR_NE;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ge")) {
+ BinOp = OPERATOR_GE;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"le")) {
+ BinOp = OPERATOR_LE;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"==")) {
+ BinOp = OPERATOR_EQ;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ugt")) {
+ BinOp = OPERATOR_UGT;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ult")) {
+ BinOp = OPERATOR_ULT;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"uge")) {
+ BinOp = OPERATOR_UGE;
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"ule")) {
+ BinOp = OPERATOR_ULE;
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_INVALID_BINOP), gShellLevel1HiiHandle, StatementWalker);
+ Status = EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // get the second item
+ //
+ ASSERT(StartParameterNumber+2<=EndParameterNumber);
+ StatementWalker = gEfiShellParametersProtocol->Argv[StartParameterNumber+2];
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"efierror")) {
+ TempSpot = StrStr(StatementWalker, L")");
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ TempSpot = CHAR_NULL;
+ if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
+ UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT);
+ ASSERT(Compare2 == NULL);
+ Compare2 = StrnCatGrow(&Compare2, NULL, HexString, 0);
+ StatementWalker += StrLen(StatementWalker) + 1;
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"efierror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"efierror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ //
+ // can this be collapsed into the above?
+ //
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"pierror")) {
+ TempSpot = StrStr(StatementWalker, L")");
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ TempSpot = CHAR_NULL;
+ if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
+ UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT|(MAX_BIT>>2));
+ ASSERT(Compare2 == NULL);
+ Compare2 = StrnCatGrow(&Compare2, NULL, HexString, 0);
+ StatementWalker += StrLen(StatementWalker) + 1;
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"pierror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"pierror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"oemerror")) {
+ TempSpot = StrStr(StatementWalker, L")");
+ if (IsNextFragment((CONST CHAR16**)(&StatementWalker), L"(") && TempSpot != NULL) {
+ TempSpot = CHAR_NULL;
+ if (ShellIsHexOrDecimalNumber(StatementWalker, FALSE, FALSE)) {
+ UnicodeSPrint(HexString, sizeof(HexString), L"0x%x", ShellStrToUintn(StatementWalker)|MAX_BIT|(MAX_BIT>>1));
+ ASSERT(Compare2 == NULL);
+ Compare2 = StrnCatGrow(&Compare2, NULL, HexString, 0);
+ StatementWalker += StrLen(StatementWalker) + 1;
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"oemerror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_IN), gShellLevel1HiiHandle, L"oemerror");
+ Status = EFI_INVALID_PARAMETER;
+ }
+ } else {
+ //
+ // must be a raw string
+ //
+ ASSERT(Compare2 == NULL);
+ Compare2 = StrnCatGrow(&Compare2, NULL, StatementWalker, 0);
+ }
+
+ if (Compare1 != NULL && Compare2 != NULL && BinOp != OPERATOR_MAX) {
+ OperationResult = TestOperation(Compare1, Compare2, BinOp, CaseInsensitive, ForceStringCompare);
+ }
+
+ SHELL_FREE_NON_NULL(Compare1);
+ SHELL_FREE_NON_NULL(Compare2);
+ }
+
+ //
+ // done processing do result...
+ //
+
+ if (!EFI_ERROR(Status)) {
+ if (NotPresent) {
+ OperationResult = (BOOLEAN)(!OperationResult);
+ }
+ switch(OperatorToUse) {
+ case END_TAG_OR:
+ *PassingState = (BOOLEAN)(*PassingState || OperationResult);
+ break;
+ case END_TAG_AND:
+ *PassingState = (BOOLEAN)(*PassingState && OperationResult);
+ break;
+ case END_TAG_MAX:
+ *PassingState = (BOOLEAN)(OperationResult);
+ break;
+ default:
+ ASSERT(FALSE);
+ }
+ }
+ return (Status);
+}
+
+BOOLEAN
+EFIAPI
+BuildNextStatement (
+ IN UINTN ParameterNumber,
+ OUT UINTN *EndParameter,
+ OUT END_TAG_TYPE *EndTag
+ )
+{
+ CHAR16 *Buffer;
+ UINTN BufferSize;
+
+ *EndTag = END_TAG_MAX;
+
+ for(Buffer = NULL, BufferSize = 0
+ ; ParameterNumber < gEfiShellParametersProtocol->Argc
+ ; ParameterNumber++
+ ) {
+ if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[ParameterNumber],
+ L"or") == 0) {
+ *EndParameter = ParameterNumber - 1;
+ *EndTag = END_TAG_OR;
+ break;
+ } else if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[ParameterNumber],
+ L"and") == 0) {
+ *EndParameter = ParameterNumber - 1;
+ *EndTag = END_TAG_AND;
+ break;
+ } else if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[ParameterNumber],
+ L"then") == 0) {
+ *EndParameter = ParameterNumber - 1;
+ *EndTag = END_TAG_THEN;
+ break;
+ }
+ }
+ if (*EndTag == END_TAG_MAX) {
+ return (FALSE);
+ }
+ return (TRUE);
+}
+
+BOOLEAN
+EFIAPI
+MoveToTagSpecial (
+ IN SCRIPT_FILE *ScriptFile
+ )
+{
+ SCRIPT_COMMAND_LIST *CommandNode;
+ BOOLEAN Found;
+ UINTN TargetCount;
+ CHAR16 *CommandName;
+ CHAR16 *CommandWalker;
+ CHAR16 *TempLocation;
+
+ TargetCount = 1;
+ Found = FALSE;
+
+ if (ScriptFile == NULL) {
+ return FALSE;
+ }
+
+ for (CommandNode = (SCRIPT_COMMAND_LIST *)GetNextNode(&ScriptFile->CommandList, &ScriptFile->CurrentCommand->Link), Found = FALSE
+ ; !IsNull(&ScriptFile->CommandList, &CommandNode->Link) && !Found
+ ; CommandNode = (SCRIPT_COMMAND_LIST *)GetNextNode(&ScriptFile->CommandList, &CommandNode->Link)
+ ){
+
+ //
+ // get just the first part of the command line...
+ //
+ CommandName = NULL;
+ CommandName = StrnCatGrow(&CommandName, NULL, CommandNode->Cl, 0);
+ CommandWalker = CommandName;
+ while (CommandWalker[0] == L' ') {
+ CommandWalker++;
+ }
+ TempLocation = StrStr(CommandWalker, L" ");
+
+ if (TempLocation != NULL) {
+ *TempLocation = CHAR_NULL;
+ }
+
+ //
+ // did we find a nested item ?
+ //
+ if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ (CHAR16*)CommandWalker,
+ L"If") == 0) {
+ TargetCount++;
+ } else if (TargetCount == 1 && gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ (CHAR16*)CommandWalker,
+ (CHAR16*)L"else") == 0) {
+ //
+ // else can only decrement the last part... not an nested if
+ // hence the TargetCount compare added
+ //
+ TargetCount--;
+ } else if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ (CHAR16*)CommandWalker,
+ (CHAR16*)L"endif") == 0) {
+ TargetCount--;
+ }
+ if (TargetCount == 0) {
+ ScriptFile->CurrentCommand = (SCRIPT_COMMAND_LIST *)GetNextNode(&ScriptFile->CommandList, &CommandNode->Link);
+ Found = TRUE;
+ }
+
+ //
+ // Free the memory for this loop...
+ //
+ SHELL_FREE_NON_NULL(CommandName);
+ }
+ return (Found);
+}
+
+EFI_STATUS
+EFIAPI
+PerformResultOperation (
+ IN CONST BOOLEAN Result
+ )
+{
+ if (Result || MoveToTagSpecial(ShellCommandGetCurrentScriptFile())) {
+ return (EFI_SUCCESS);
+ }
+ return (EFI_NOT_FOUND);
+}
+
+/**
+ Function for 'if' 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
+ShellCommandRunIf (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ SHELL_STATUS ShellStatus;
+ BOOLEAN CaseInsensitive;
+ BOOLEAN ForceString;
+ UINTN CurrentParameter;
+ UINTN EndParameter;
+ BOOLEAN CurrentValue;
+ END_TAG_TYPE Ending;
+ END_TAG_TYPE PreviousEnding;
+
+
+ Status = CommandInit();
+ ASSERT_EFI_ERROR(Status);
+
+ if (!gEfiShellProtocol->BatchIsActive()) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_NO_SCRIPT), gShellLevel1HiiHandle, L"If");
+ return (SHELL_UNSUPPORTED);
+ }
+
+ if (gEfiShellParametersProtocol->Argc < 3) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel1HiiHandle);
+ return (SHELL_INVALID_PARAMETER);
+ }
+
+ //
+ // Make sure that an End exists.
+ //
+ if (!MoveToTag(GetNextNode, L"endif", L"if", NULL, ShellCommandGetCurrentScriptFile(), TRUE, TRUE, FALSE)) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_NO_MATCHING), gShellLevel1HiiHandle, L"EnfIf", L"If", ShellCommandGetCurrentScriptFile()->CurrentCommand->Line);
+ return (SHELL_DEVICE_ERROR);
+ }
+
+ //
+ // initialize the shell lib (we must be in non-auto-init...)
+ //
+ Status = ShellInitialize();
+ ASSERT_EFI_ERROR(Status);
+
+ CurrentParameter = 1;
+ EndParameter = 0;
+
+ if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[1],
+ L"/i") == 0 ||
+ gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[2],
+ L"/i") == 0 ||
+ (gEfiShellParametersProtocol->Argc > 3 && gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[3],
+ L"/i") == 0)) {
+ CaseInsensitive = TRUE;
+ CurrentParameter++;
+ } else {
+ CaseInsensitive = FALSE;
+ }
+ if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[1],
+ L"/s") == 0 ||
+ gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[2],
+ L"/s") == 0 ||
+ (gEfiShellParametersProtocol->Argc > 3 && gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[3],
+ L"/s") == 0)) {
+ ForceString = TRUE;
+ CurrentParameter++;
+ } else {
+ ForceString = FALSE;
+ }
+
+ for ( ShellStatus = SHELL_SUCCESS, CurrentValue = FALSE, Ending = END_TAG_MAX
+ ; CurrentParameter < gEfiShellParametersProtocol->Argc && ShellStatus == SHELL_SUCCESS
+ ; CurrentParameter++) {
+ if (gUnicodeCollation->StriColl(
+ gUnicodeCollation,
+ gEfiShellParametersProtocol->Argv[CurrentParameter],
+ L"then") == 0) {
+ //
+ // we are at the then
+ //
+ if (CurrentParameter+1 != gEfiShellParametersProtocol->Argc) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_TEXT_AFTER_THEN), gShellLevel1HiiHandle);
+ ShellStatus = SHELL_INVALID_PARAMETER;
+ } else {
+ Status = PerformResultOperation(CurrentValue);
+ if (EFI_ERROR(Status)) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_AFTER_BAD), gShellLevel1HiiHandle, gEfiShellParametersProtocol->Argv[CurrentParameter]);
+ ShellStatus = SHELL_INVALID_PARAMETER;
+ }
+ }
+ } else {
+ PreviousEnding = Ending;
+ //
+ // build up the next statement for analysis
+ //
+ if (!BuildNextStatement(CurrentParameter, &EndParameter, &Ending)) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_NO_MATCHING), gShellLevel1HiiHandle, L"Then", L"If", ShellCommandGetCurrentScriptFile()->CurrentCommand->Line);
+ ShellStatus = SHELL_INVALID_PARAMETER;
+ } else {
+ //
+ // Analyze the statement
+ //
+ Status = ProcessStatement(&CurrentValue, CurrentParameter, EndParameter, PreviousEnding, CaseInsensitive, ForceString);
+ if (EFI_ERROR(Status)) {
+// ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_STARTING), gShellLevel1HiiHandle, gEfiShellParametersProtocol->Argv[CurrentParameter]);
+ ShellStatus = SHELL_INVALID_PARAMETER;
+ } else {
+ //
+ // Optomize to get out of the loop early...
+ //
+ if ((Ending == END_TAG_OR && CurrentValue) || (Ending == END_TAG_AND && !CurrentValue)) {
+ Status = PerformResultOperation(CurrentValue);
+ if (EFI_ERROR(Status)) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_AFTER_BAD), gShellLevel1HiiHandle, gEfiShellParametersProtocol->Argv[CurrentParameter]);
+ ShellStatus = SHELL_INVALID_PARAMETER;
+ }
+ break;
+ }
+ }
+ }
+ if (ShellStatus == SHELL_SUCCESS){
+ CurrentParameter = EndParameter;
+ //
+ // Skip over the or or and parameter.
+ //
+ if (Ending == END_TAG_OR || Ending == END_TAG_AND) {
+ CurrentParameter++;
+ }
+ }
+ }
+ }
+ return (ShellStatus);
+}
+
+/**
+ Function for 'else' 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
+ShellCommandRunElse (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ ASSERT_EFI_ERROR(CommandInit());
+
+ if (gEfiShellParametersProtocol->Argc > 1) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel1HiiHandle);
+ return (SHELL_INVALID_PARAMETER);
+ }
+
+ if (!gEfiShellProtocol->BatchIsActive()) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_NO_SCRIPT), gShellLevel1HiiHandle, L"Else");
+ return (SHELL_UNSUPPORTED);
+ }
+
+
+ if (!MoveToTag(GetPreviousNode, L"if", L"endif", NULL, ShellCommandGetCurrentScriptFile(), FALSE, TRUE, FALSE)) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_NO_MATCHING), gShellLevel1HiiHandle, L"If", L"Else", ShellCommandGetCurrentScriptFile()->CurrentCommand->Line);
+ return (SHELL_DEVICE_ERROR);
+ }
+ if (!MoveToTag(GetPreviousNode, L"if", L"else", NULL, ShellCommandGetCurrentScriptFile(), FALSE, TRUE, FALSE)) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_NO_MATCHING), gShellLevel1HiiHandle, L"If", L"Else", ShellCommandGetCurrentScriptFile()->CurrentCommand->Line);
+ return (SHELL_DEVICE_ERROR);
+ }
+
+ if (!MoveToTag(GetNextNode, L"endif", L"if", NULL, ShellCommandGetCurrentScriptFile(), FALSE, FALSE, FALSE)) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_NO_MATCHING), gShellLevel1HiiHandle, L"EndIf", "Else", ShellCommandGetCurrentScriptFile()->CurrentCommand->Line);
+ return (SHELL_DEVICE_ERROR);
+ }
+
+ return (SHELL_SUCCESS);
+}
+
+/**
+ Function for 'endif' 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
+ShellCommandRunEndIf (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ ASSERT_EFI_ERROR(CommandInit());
+
+ if (gEfiShellParametersProtocol->Argc > 1) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_MANY), gShellLevel1HiiHandle);
+ return (SHELL_INVALID_PARAMETER);
+ }
+
+ if (!gEfiShellProtocol->BatchIsActive()) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_NO_SCRIPT), gShellLevel1HiiHandle, L"Endif");
+ return (SHELL_UNSUPPORTED);
+ }
+
+ if (!MoveToTag(GetPreviousNode, L"if", L"endif", NULL, ShellCommandGetCurrentScriptFile(), FALSE, TRUE, FALSE)) {
+ ShellPrintHiiEx(-1, -1, NULL, STRING_TOKEN (STR_SYNTAX_NO_MATCHING), gShellLevel1HiiHandle, L"If", L"EndIf", ShellCommandGetCurrentScriptFile()->CurrentCommand->Line);
+ return (SHELL_DEVICE_ERROR);
+ }
+
+ return (SHELL_SUCCESS);
+}
|