421 lines
11 KiB
C
421 lines
11 KiB
C
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/*++
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Copyright (c) 1993 Microsoft Corporation
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Module Name:
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spstring.c
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Abstract:
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This module contains functions to manipulate strings.
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These functions would ordinarily be performed by C Runtime routines
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except that we want to avoid linking this device driver with
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the kernel crt.
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Author:
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Ted Miller (tedm) 15-Jan-1994
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Revision History:
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--*/
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#include "spprecmp.h"
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#pragma hdrstop
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VOID
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SpStringToUpper(
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IN PWSTR String
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)
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{
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for( ; *String; String++) {
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*String = SpToUpper(*String);
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}
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}
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VOID
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SpStringToLower(
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IN PWSTR String
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)
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{
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for( ; *String; String++) {
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*String = SpToLower(*String);
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}
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}
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PWCHAR
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SpFindCharFromListInString(
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PWSTR String,
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PWSTR CharList
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)
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{
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PWSTR wcset;
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while(*String) {
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for(wcset=CharList; *wcset; wcset++) {
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if(*wcset == *String) {
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return(String);
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}
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}
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String++;
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}
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return(NULL);
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}
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unsigned
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SpMultiByteStringToUnsigned(
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IN PUCHAR String,
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OUT PUCHAR *CharThatStoppedScan OPTIONAL
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)
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{
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unsigned accum = 0;
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while(*String) {
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if(isdigit(*String)) {
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accum *= 10;
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accum += *String - '0';
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}
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String++;
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}
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if(CharThatStoppedScan) {
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*CharThatStoppedScan = String;
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}
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return(accum);
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}
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LONG
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SpStringToLong(
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IN PWSTR String,
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OUT PWCHAR *EndOfValue,
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IN unsigned Radix
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)
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{
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PWSTR p;
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BOOLEAN Negative;
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LONG Accum,v;
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WCHAR HighestDigitAllowed,HighestLetterAllowed;
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WCHAR c;
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//
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// Validate radix, 0 or 2-36.
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//
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if((Radix == 1) || (Radix > 36)) {
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if(EndOfValue) {
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*EndOfValue = String;
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}
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return(0);
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}
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p = String;
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//
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// Skip whitespace.
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//
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while(SpIsSpace(*p)) {
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p++;
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}
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//
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// First char may be a plus or minus.
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//
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Negative = FALSE;
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if(*p == L'-') {
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Negative = TRUE;
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p++;
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} else {
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if(*p == L'+') {
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p++;
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}
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}
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if(!Radix) {
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if(*p == L'0') {
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//
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// Octal number
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//
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Radix = 8;
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p++;
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if((*p == L'x') || (*p == L'X')) {
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//
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// hex number
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//
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Radix = 16;
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p++;
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}
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} else {
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Radix = 10;
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}
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}
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HighestDigitAllowed = (Radix < 10) ? L'0'+(WCHAR)(Radix-1) : L'9';
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HighestLetterAllowed = (Radix > 10) ? L'A'+(WCHAR)(Radix-11) : 0;
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Accum = 0;
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while(1) {
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c = *p;
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if((c >= L'0') && (c <= HighestDigitAllowed)) {
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v = c - L'0';
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} else {
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c = SpToUpper(c);
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if((c >= L'A') && (c <= HighestLetterAllowed)) {
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v = c - L'A' + 10;
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} else {
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break;
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}
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}
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Accum *= Radix;
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Accum += v;
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p++;
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}
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if(EndOfValue) {
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*EndOfValue = p;
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}
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return(Negative ? (0-Accum) : Accum);
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}
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PWCHAR
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SpConvertMultiSzStrToWstr(
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IN PCHAR Source,
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IN ULONG Length
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)
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{
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NTSTATUS status;
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PCHAR s, sourceEnd;
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PWCHAR dest, d;
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ANSI_STRING ansiString;
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UNICODE_STRING unicodeString;
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if (Length <= 2) {
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return NULL;
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}
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#if DBG
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for (s = Source; *s != '\0'; s += strlen(s) + 1) {
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}
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ASSERT(Length == (ULONG)(s - Source) + 1);
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#endif
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dest = SpMemAlloc(Length * sizeof(WCHAR));
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if (dest) {
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s = Source;
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for (sourceEnd = s + Length, d = dest;
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s < sourceEnd && *s != '\0';
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s += strlen(s) + 1) {
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RtlInitAnsiString(&ansiString, s);
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status = RtlAnsiStringToUnicodeString(&unicodeString, &ansiString, TRUE);
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if (!NT_SUCCESS(status)) {
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SpMemFree(dest);
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return NULL;
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}
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RtlCopyMemory(d, unicodeString.Buffer, unicodeString.Length + sizeof(UNICODE_NULL));
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d += (unicodeString.Length + sizeof(UNICODE_NULL)) / sizeof(WCHAR);
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RtlFreeUnicodeString(&unicodeString);
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}
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if (s < sourceEnd) {
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*d = UNICODE_NULL;
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}
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}
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return dest;
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}
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PCHAR
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SpConvertMultiSzWstrToStr(
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IN PWCHAR Source,
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IN ULONG Length
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)
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{
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NTSTATUS status;
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PWCHAR s, sourceEnd;
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PCHAR dest, d;
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ANSI_STRING ansiString;
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UNICODE_STRING unicodeString;
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if (Length <= 2) {
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return NULL;
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}
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#if DBG
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for (s = Source; *s != UNICODE_NULL; s += wcslen(s) + 1) {
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}
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ASSERT(Length == (ULONG)(s - Source) + 1);
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#endif
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dest = SpMemAlloc(Length * sizeof(CHAR));
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if (dest) {
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s = Source;
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for (sourceEnd = s + Length, d = dest;
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s < sourceEnd && *s != UNICODE_NULL;
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s += wcslen(s) + 1) {
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RtlInitUnicodeString(&unicodeString, s);
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status = RtlUnicodeStringToAnsiString(&ansiString, &unicodeString, TRUE);
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if (!NT_SUCCESS(status)) {
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SpMemFree(dest);
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return NULL;
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}
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RtlCopyMemory(d, ansiString.Buffer, ansiString.Length + 1);
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d += ansiString.Length + 1;
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RtlFreeAnsiString(&ansiString);
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}
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if (s < sourceEnd) {
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*d = '\0';
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}
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}
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return dest;
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}
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UCHAR _SpCharTypes[CTSIZE] = {
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_SP_NONE, /* 00 (NUL) */
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_SP_NONE, /* 01 (SOH) */
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_SP_NONE, /* 02 (STX) */
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_SP_NONE, /* 03 (ETX) */
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_SP_NONE, /* 04 (EOT) */
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_SP_NONE, /* 05 (ENQ) */
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_SP_NONE, /* 06 (ACK) */
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_SP_NONE, /* 07 (BEL) */
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_SP_NONE, /* 08 (BS) */
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_SP_SPACE, /* 09 (HT) */
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_SP_SPACE, /* 0A (LF) */
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_SP_SPACE, /* 0B (VT) */
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_SP_SPACE, /* 0C (FF) */
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_SP_SPACE, /* 0D (CR) */
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_SP_NONE, /* 0E (SI) */
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_SP_NONE, /* 0F (SO) */
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_SP_NONE, /* 10 (DLE) */
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_SP_NONE, /* 11 (DC1) */
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_SP_NONE, /* 12 (DC2) */
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_SP_NONE, /* 13 (DC3) */
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_SP_NONE, /* 14 (DC4) */
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_SP_NONE, /* 15 (NAK) */
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_SP_NONE, /* 16 (SYN) */
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_SP_NONE, /* 17 (ETB) */
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_SP_NONE, /* 18 (CAN) */
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_SP_NONE, /* 19 (EM) */
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_SP_NONE, /* 1A (SUB) */
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_SP_NONE, /* 1B (ESC) */
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_SP_NONE, /* 1C (FS) */
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_SP_NONE, /* 1D (GS) */
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_SP_NONE, /* 1E (RS) */
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_SP_NONE, /* 1F (US) */
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_SP_SPACE, /* 20 SPACE */
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_SP_NONE, /* 21 ! */
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_SP_NONE, /* 22 " */
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_SP_NONE, /* 23 # */
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_SP_NONE, /* 24 $ */
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_SP_NONE, /* 25 % */
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_SP_NONE, /* 26 & */
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_SP_NONE, /* 27 ' */
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_SP_NONE, /* 28 ( */
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_SP_NONE, /* 29 ) */
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_SP_NONE, /* 2A * */
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_SP_NONE, /* 2B + */
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_SP_NONE, /* 2C , */
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_SP_NONE, /* 2D - */
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_SP_NONE, /* 2E . */
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_SP_NONE, /* 2F / */
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_SP_DIGIT + _SP_XDIGIT, /* 30 0 */
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_SP_DIGIT + _SP_XDIGIT, /* 31 1 */
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_SP_DIGIT + _SP_XDIGIT, /* 32 2 */
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_SP_DIGIT + _SP_XDIGIT, /* 33 3 */
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_SP_DIGIT + _SP_XDIGIT, /* 34 4 */
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_SP_DIGIT + _SP_XDIGIT, /* 35 5 */
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_SP_DIGIT + _SP_XDIGIT, /* 36 6 */
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_SP_DIGIT + _SP_XDIGIT, /* 37 7 */
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_SP_DIGIT + _SP_XDIGIT, /* 38 8 */
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_SP_DIGIT + _SP_XDIGIT, /* 39 9 */
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_SP_NONE, /* 3A : */
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_SP_NONE, /* 3B ; */
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_SP_NONE, /* 3C < */
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_SP_NONE, /* 3D = */
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_SP_NONE, /* 3E > */
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_SP_NONE, /* 3F ? */
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_SP_NONE, /* 40 @ */
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_SP_UPPER + _SP_XDIGIT, /* 41 A */
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_SP_UPPER + _SP_XDIGIT, /* 42 B */
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_SP_UPPER + _SP_XDIGIT, /* 43 C */
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_SP_UPPER + _SP_XDIGIT, /* 44 D */
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_SP_UPPER + _SP_XDIGIT, /* 45 E */
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_SP_UPPER + _SP_XDIGIT, /* 46 F */
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_SP_UPPER, /* 47 G */
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_SP_UPPER, /* 48 H */
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_SP_UPPER, /* 49 I */
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_SP_UPPER, /* 4A J */
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_SP_UPPER, /* 4B K */
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_SP_UPPER, /* 4C L */
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_SP_UPPER, /* 4D M */
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_SP_UPPER, /* 4E N */
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_SP_UPPER, /* 4F O */
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_SP_UPPER, /* 50 P */
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_SP_UPPER, /* 51 Q */
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_SP_UPPER, /* 52 R */
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_SP_UPPER, /* 53 S */
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_SP_UPPER, /* 54 T */
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_SP_UPPER, /* 55 U */
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_SP_UPPER, /* 56 V */
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_SP_UPPER, /* 57 W */
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_SP_UPPER, /* 58 X */
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_SP_UPPER, /* 59 Y */
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_SP_UPPER, /* 5A Z */
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_SP_NONE, /* 5B [ */
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_SP_NONE, /* 5C \ */
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_SP_NONE, /* 5D ] */
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_SP_NONE, /* 5E ^ */
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_SP_NONE, /* 5F _ */
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_SP_NONE, /* 60 ` */
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_SP_LOWER + _SP_XDIGIT, /* 61 a */
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_SP_LOWER + _SP_XDIGIT, /* 62 b */
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_SP_LOWER + _SP_XDIGIT, /* 63 c */
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_SP_LOWER + _SP_XDIGIT, /* 64 d */
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_SP_LOWER + _SP_XDIGIT, /* 65 e */
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_SP_LOWER + _SP_XDIGIT, /* 66 f */
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_SP_LOWER, /* 67 g */
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_SP_LOWER, /* 68 h */
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_SP_LOWER, /* 69 i */
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|
_SP_LOWER, /* 6A j */
|
||
|
|
_SP_LOWER, /* 6B k */
|
||
|
|
_SP_LOWER, /* 6C l */
|
||
|
|
_SP_LOWER, /* 6D m */
|
||
|
|
_SP_LOWER, /* 6E n */
|
||
|
|
_SP_LOWER, /* 6F o */
|
||
|
|
_SP_LOWER, /* 70 p */
|
||
|
|
_SP_LOWER, /* 71 q */
|
||
|
|
_SP_LOWER, /* 72 r */
|
||
|
|
_SP_LOWER, /* 73 s */
|
||
|
|
_SP_LOWER, /* 74 t */
|
||
|
|
_SP_LOWER, /* 75 u */
|
||
|
|
_SP_LOWER, /* 76 v */
|
||
|
|
_SP_LOWER, /* 77 w */
|
||
|
|
_SP_LOWER, /* 78 x */
|
||
|
|
_SP_LOWER, /* 79 y */
|
||
|
|
_SP_LOWER /* 7A z */
|
||
|
|
};
|