windows-nt/Source/XPSP1/NT/base/busdrv/acpi/tools/kdext/uparsearg.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 1997 Microsoft Corporation
Module Name:
parsearg.c
Abstract:
Argument Handling
Author:
MikeTs
Environment:
Any
Revision History:
--*/
#include "pch.h"
VOID
ParseProgramInfo(
PUCHAR ProgramName,
PPROGINFO ProgramInfo
)
/*++
Routine Description:
This routine parses program path and module name
Arguments:
ProgramName - The Argv[0] from main()
ProgramInfo - Program Information structure
Return Value:
None
--*/
{
PUCHAR ptr;
ProgramInfo->ProgPath = _strlwr(ProgramName);
ptr = strrchr( ProgramName, '\\' );
if (ptr != NULL) {
*ptr = '\0';
ProgramInfo->ProgName = ptr + 1;
} else {
ProgramInfo->ProgName = ProgramName;
}
ptr = strchr(ProgramInfo->ProgName, '.');
if (ptr != NULL) {
*ptr = '\0';
}
}
ULONG
ParseSwitches(
PULONG ArgumentCount,
PUCHAR **ArgumentList,
PARGTYPE ArgumentArray,
PPROGINFO ProgramInfo
)
/*++
Routine Description:
Parse command line switches
Arguments:
ArgumentCount - Pointer to the number of arguments
ArgumentList - Pointer to the pointer to the list of arguments
ArgumentArray - How to parse the arguments
ProgramInfo - Program Specific structure
Return Value:
ULONG - Success = ARGERR_NONE
--*/
{
PUCHAR argument;
ULONG status = ARGERR_NONE;
if (ProgramInfo->SwitchChars == NULL) {
ProgramInfo->SwitchChars = DEF_SWITCHCHARS;
}
if (ProgramInfo->Separators == NULL) {
ProgramInfo->Separators = DEF_SEPARATORS;
}
for (; *ArgumentCount; (*ArgumentCount)--, (*ArgumentList)++)
{
argument = **ArgumentList;
if (strchr(ProgramInfo->SwitchChars, *argument)) {
argument++;
status = ParseArgSwitch(
&argument,
ArgumentArray,
ProgramInfo
);
if (status != ARGERR_NONE) {
PrintError( status, argument, ProgramInfo );
break;
}
} else {
break;
}
}
return status;
}
ULONG
ParseArgSwitch(
PUCHAR *Argument,
PARGTYPE ArgumentArray,
PPROGINFO ProgramInfo
)
/*++
Routine Description:
Parse a command line switch
Arguments
Argument - Pointer to argument
ArgumentArray - How to handle the argument
ProgramInfo - Program Information Structure
Return Value:
ULONG
--*/
{
BOOL found = FALSE;
PARGTYPE tableEntry;
PUCHAR argumentEnd;
ULONG length = 0;
ULONG status = ARGERR_NONE;
tableEntry = ArgumentArray;
while (tableEntry->ArgID[0]) {
length = strlen(tableEntry->ArgID);
if (tableEntry->ParseFlags & PF_NOI) {
found = (strncmp(tableEntry->ArgID, *Argument, length) == 0);
} else {
found = (_strnicmp(tableEntry->ArgID, *Argument, length) == 0);
}
if (found) {
break;
}
tableEntry++;
}
if (found) {
*Argument += length;
switch (tableEntry->ArgType) {
case AT_STRING:
case AT_NUM:
if (tableEntry->ParseFlags & PF_SEPARATOR)
{
if (**Argument &&
strchr(ProgramInfo->Separators, **Argument)) {
(*Argument)++;
} else {
status = ARGERR_NO_SEPARATOR;
break;
}
}
if (tableEntry->ArgType == AT_STRING) {
*(UCHAR **)tableEntry->ArgData = *Argument;
} else {
*(ULONG *)tableEntry->ArgData = (ULONG)
strtoul(*Argument, &argumentEnd, tableEntry->ArgParam);
if (*Argument == argumentEnd) {
status = ARGERR_INVALID_NUM;
break;
}
*Argument = argumentEnd;
}
if (tableEntry->ArgVerify) {
status = (*tableEntry->ArgVerify)(Argument, tableEntry);
}
break;
case AT_ENABLE:
case AT_DISABLE:
if (tableEntry->ArgType == AT_ENABLE) {
*(ULONG *)tableEntry->ArgData |= tableEntry->ArgParam;
} else {
*(ULONG *)tableEntry->ArgData &= ~tableEntry->ArgParam;
}
if ( tableEntry->ArgVerify) {
status = (*tableEntry->ArgVerify)(Argument, tableEntry);
if (status == ARGERR_NONE) {
break;
}
}
if (**Argument) {
if (strchr(ProgramInfo->SwitchChars, **Argument)) {
(*Argument)++;
}
status = ParseArgSwitch(
Argument,
ArgumentArray,
ProgramInfo
);
}
break;
case AT_ACTION:
if (tableEntry->ParseFlags & PF_SEPARATOR)
{
if (**Argument &&
strchr(ProgramInfo->Separators, **Argument)) {
(*Argument)++;
} else {
status = ARGERR_NO_SEPARATOR;
break;
}
}
#pragma warning(disable: 4055)
status = (*(PFNARG)tableEntry->ArgData)(Argument, tableEntry);
#pragma warning(default: 4055)
break;
}
} else {
status = ARGERR_UNKNOWN_SWITCH;
}
return status;
}
VOID
PrintError(
ULONG ErrorCode,
PUCHAR Argument,
PPROGINFO ProgramInfo
)
/*++
Routine Description:
Print Appropriate Error Message according to error code
Arguments:
ErrorCode - The error which occured
Argument - Argument in Error
ProgramInfo - Program info structure
Return Value:
VOID
--*/
{
switch (ErrorCode) {
case ARGERR_UNKNOWN_SWITCH:
fprintf(
stderr,
"%s: unknown switch \"%s\"\n",
ProgramInfo->ProgName,
Argument
);
break;
case ARGERR_NO_SEPARATOR:
fprintf(
stderr,
"%s: separator missing after the switch char '%c'\n",
ProgramInfo->ProgName,
*(Argument-1)
);
break;
case ARGERR_INVALID_NUM:
fprintf(
stderr,
"%s: invalid numeric switch \"%s\"\n",
ProgramInfo->ProgName,
Argument
);
break;
case ARGERR_INVALID_TAIL:
fprintf(
stderr,
"%s: invalid argument tail \"%s\"\n",
ProgramInfo->ProgName,
Argument
);
}
}