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