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