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windows-nt/Source/XPSP1/NT/base/boot/lib/parseini.c

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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
parseini.c
Abstract:
This module implements functions to parse a .INI file
Author:
John Vert (jvert) 7-Oct-1993
Revision History:
John Vert (jvert) 7-Oct-1993 - largely lifted from splib\spinf.c
--*/
#include "parseini.h"
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#define SpFree(x)
// what follows was alpar.h
//
// EXPORTED BY THE PARSER AND USED BY BOTH THE PARSER AND
// THE INF HANDLING COMPONENTS
//
// typedefs exported
//
typedef struct _value {
struct _value *pNext;
PCHAR pName;
#ifdef UNICODE
PWCHAR pNameW;
#endif
} VALUE, *PVALUE;
#define NUMBER_OF_INTERNAL_VALUES 10
typedef struct _line {
struct _line *pNext;
PCHAR pName;
PCHAR InternalValues[NUMBER_OF_INTERNAL_VALUES];
#ifdef UNICODE
PWCHAR pNameW;
PWCHAR InternalValuesW[NUMBER_OF_INTERNAL_VALUES];
#endif
PVALUE pFirstExternalValue;
} LINE, *PLINE;
typedef struct _section {
struct _section *pNext;
PCHAR pName;
#ifdef UNICODE
PWCHAR pNameW;
#endif
PLINE pLine;
} SECTION, *PSECTION;
typedef struct _inf {
PSECTION pSection;
} INF, *PINF;
//
// Routines exported
//
PVOID
ParseInfBuffer(
PCHAR INFFile,
PCHAR Buffer,
ULONG Size,
PULONG ErrorLine
);
//
// DEFINES USED FOR THE PARSER INTERNALLY
//
//
// typedefs used
//
typedef enum _tokentype {
TOK_EOF,
TOK_EOL,
TOK_LBRACE,
TOK_RBRACE,
TOK_STRING,
TOK_EQUAL,
TOK_COMMA,
TOK_ERRPARSE,
TOK_ERRNOMEM
} TOKENTYPE, *PTOKENTTYPE;
typedef struct _token {
TOKENTYPE Type;
PCHAR pValue;
} TOKEN, *PTOKEN;
//
// Routine defines
//
ARC_STATUS
SpAppendSection(
IN PCHAR pSectionName
#ifdef UNICODE
, IN PWCHAR pSectionNameW
#endif
);
ARC_STATUS
SpAppendLine(
IN PCHAR pLineKey
#ifdef UNICODE
, IN PWCHAR pLineKeyW
#endif
);
ARC_STATUS
SpAppendValue(
IN PCHAR pValueString
#ifdef UNICODE
, IN PWCHAR pValueStringW
#endif
);
TOKEN
SpGetToken(
IN OUT PCHAR *Stream,
IN PCHAR MaxStream
);
// Global added to provide INF filename for friendly error messages.
PCHAR pchINFName = NULL;
// what follows was alinf.c
//
// Internal Routine Declarations for freeing inf structure members
//
VOID
FreeSectionList (
IN PSECTION pSection
);
VOID
FreeLineList (
IN PLINE pLine
);
VOID
FreeValueList (
IN PVALUE pValue
);
//
// Internal Routine declarations for searching in the INF structures
//
PCHAR
SearchValueInLine(
IN PLINE pLine,
IN ULONG ValueIndex
);
PLINE
SearchLineInSectionByKey(
IN PSECTION pSection,
IN PCHAR Key,
OUT PULONG pOrdinal OPTIONAL
);
PLINE
SearchLineInSectionByIndex(
IN PSECTION pSection,
IN ULONG LineIndex
);
PSECTION
SearchSectionByName(
IN PINF pINF,
IN PCHAR SectionName
);
PCHAR
ProcessForStringSubs(
IN PINF pInf,
IN PCHAR String
);
#ifdef UNICODE
PWCHAR
SearchValueInLineW(
IN PLINE pLine,
IN ULONG ValueIndex
);
PWCHAR
ProcessForStringSubsW(
IN PINF pInf,
IN PWCHAR String
);
#endif
//
// ROUTINE DEFINITIONS
//
PCHAR
SlGetIniValue(
IN PVOID InfHandle,
IN PCHAR SectionName,
IN PCHAR KeyName,
IN PCHAR Default
)
/*++
Routine Description:
Searches an INF handle for a given section/key value.
Arguments:
InfHandle - Supplies a handle returned by SlInitIniFile.
SectionName - Supplies the name of the section to search
KeyName - Supplies the name of the key whose value should be returned.
Default - Supplies the default setting, returned if the specified key
is not found.
Return Value:
Pointer to the value of the key, if the key is found
Default, if the key is not found.
--*/
{
PCHAR Value;
Value = SlGetSectionKeyIndex(InfHandle,
SectionName,
KeyName,
0);
if (Value==NULL) {
Value = Default;
}
return(Value);
}
#ifdef UNICODE
PWCHAR
SlGetIniValueW(
IN PVOID InfHandle,
IN PCHAR SectionName,
IN PCHAR KeyName,
IN PWCHAR Default
)
/*++
Routine Description:
Searches an INF handle for a given section/key value.
Arguments:
InfHandle - Supplies a handle returned by SlInitIniFile.
SectionName - Supplies the name of the section to search
KeyName - Supplies the name of the key whose value should be returned.
Default - Supplies the default setting, returned if the specified key
is not found.
Return Value:
Pointer to the value of the key, if the key is found
Default, if the key is not found.
--*/
{
PWCHAR Value;
Value = SlGetSectionKeyIndexW(InfHandle,
SectionName,
KeyName,
0);
if (Value==NULL) {
Value = Default;
}
return(Value);
}
#endif
//
// returns a handle to use for further inf parsing
//
ARC_STATUS
SlInitIniFile(
IN PCHAR DevicePath,
IN ULONG DeviceId,
IN PCHAR INFFile,
OUT PVOID *pINFHandle,
OUT PVOID *pINFBuffer OPTIONAL,
OUT PULONG INFBufferSize OPTIONAL,
OUT PULONG ErrorLine
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
ARC_STATUS Status;
ULONG DeviceID,FileID;
PCHAR Buffer;
ULONG Size, SizeRead;
FILE_INFORMATION FileInfo;
ULONG PageCount;
ULONG ActualBase;
*ErrorLine = (ULONG)(-1);
//
// If required, open the device
//
if(DevicePath) {
Status = ArcOpen(DevicePath,ArcOpenReadOnly,&DeviceID);
if (Status != ESUCCESS) {
return( Status );
}
} else {
DeviceID = DeviceId;
}
//
// Open the file
//
Status = BlOpen(DeviceID,INFFile,ArcOpenReadOnly,&FileID);
if (Status != ESUCCESS) {
// We report better error messages elsewhere
// SlMessageBox(SL_FILE_LOAD_FAILED,INFFile,Status);
pchINFName = NULL;
goto xx0;
} else {
pchINFName = INFFile;
}
//
// find out size of INF file
//
Status = BlGetFileInformation(FileID, &FileInfo);
if (Status != ESUCCESS) {
BlClose(FileID);
goto xx0;
}
Size = FileInfo.EndingAddress.LowPart;
//
// Allocate a descriptor large enough to hold the entire file.
// On x86 this has an unfortunate tendency to slam txtsetup.sif
// into a free block at 1MB, which means the kernel can't be
// loaded (it's linked for 0x100000 without relocations).
// On x86 this has an unfortunate tendency to slam txtsetup.sif
// into a free block at 1MB, which means the kernel can't be
// loaded (it's linked for 0x100000 without relocations).
//
// (tedm) we're also seeing a similar problem on alphas now
// because txtsetup.sif has grown too large, so this code has been
// made non-conditional.
//
{
PageCount = (ULONG)(ROUND_TO_PAGES(Size) >> PAGE_SHIFT);
Status = BlAllocateDescriptor(LoaderOsloaderHeap,
0,
PageCount,
&ActualBase);
}
if (Status != ESUCCESS) {
BlClose(FileID);
goto xx0;
}
Buffer = (PCHAR)(KSEG0_BASE | (ActualBase << PAGE_SHIFT));
//
// read the file in
//
Status = BlRead(FileID, Buffer, Size, &SizeRead);
if (Status != ESUCCESS) {
BlClose(FileID);
goto xx0;
}
if ( pINFBuffer != NULL ) {
*pINFBuffer = Buffer;
*INFBufferSize = SizeRead;
}
//
// parse the file
//
if((*pINFHandle = ParseInfBuffer(INFFile, Buffer, SizeRead, ErrorLine)) == (PVOID)NULL) {
Status = EBADF;
} else {
Status = ESUCCESS;
}
//
// Clean up and return
//
BlClose(FileID);
xx0:
if(DevicePath) {
ArcClose(DeviceID);
}
return( Status );
}
//
// frees an INF Buffer
//
ARC_STATUS
SpFreeINFBuffer (
IN PVOID INFHandle
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PINF pINF;
//
// Valid INF Handle?
//
if (INFHandle == (PVOID)NULL) {
return ESUCCESS;
}
//
// cast the buffer into an INF structure
//
pINF = (PINF)INFHandle;
FreeSectionList(pINF->pSection);
//
// free the inf structure too
//
SpFree(pINF);
return( ESUCCESS );
}
VOID
FreeSectionList (
IN PSECTION pSection
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSECTION Next;
while(pSection) {
Next = pSection->pNext;
FreeLineList(pSection->pLine);
if(pSection->pName) {
SpFree(pSection->pName);
}
#ifdef UNICODE
if(pSection->pNameW) {
SpFree(pSection->pNameW);
}
#endif
SpFree(pSection);
pSection = Next;
}
}
VOID
FreeLineList (
IN PLINE pLine
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PLINE Next;
while(pLine) {
Next = pLine->pNext;
FreeValueList(pLine->pFirstExternalValue);
if(pLine->pName) {
SpFree(pLine->pName);
}
#ifdef UNICODE
if(pLine->pNameW) {
SpFree(pLine->pNameW);
}
#endif
SpFree(pLine);
pLine = Next;
}
}
VOID
FreeValueList (
IN PVALUE pValue
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PVALUE Next;
while(pValue) {
Next = pValue->pNext;
if(pValue->pName) {
SpFree(pValue->pName);
}
#ifdef UNICODE
if(pValue->pNameW) {
SpFree(pValue->pNameW);
}
#endif
SpFree(pValue);
pValue = Next;
}
}
//
// searches for the existance of a particular section
//
BOOLEAN
SpSearchINFSection (
IN PVOID INFHandle,
IN PCHAR SectionName
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSECTION pSection;
//
// if search for section fails return false
//
if ((pSection = SearchSectionByName(
(PINF)INFHandle,
SectionName
)) == (PSECTION)NULL) {
return( FALSE );
}
//
// else return true
//
return( TRUE );
}
//
// given section name, line number and index return the value.
//
PCHAR
SlGetSectionLineIndex (
IN PVOID INFHandle,
IN PCHAR SectionName,
IN ULONG LineIndex,
IN ULONG ValueIndex
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSECTION pSection;
PLINE pLine;
PCHAR pName;
if((pSection = SearchSectionByName(
(PINF)INFHandle,
SectionName
))
== (PSECTION)NULL)
return((PCHAR)NULL);
if((pLine = SearchLineInSectionByIndex(
pSection,
LineIndex
))
== (PLINE)NULL)
return((PCHAR)NULL);
if((pName = SearchValueInLine(
pLine,
ValueIndex
))
== (PCHAR)NULL)
return((PCHAR)NULL);
return(ProcessForStringSubs(INFHandle,pName));
}
#ifdef UNICODE
//
// given section name, line number and index return the value.
//
PWCHAR
SlGetSectionLineIndexW (
IN PVOID INFHandle,
IN PCHAR SectionName,
IN ULONG LineIndex,
IN ULONG ValueIndex
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSECTION pSection;
PLINE pLine;
PWCHAR pName;
if((pSection = SearchSectionByName(
(PINF)INFHandle,
SectionName
))
== (PSECTION)NULL)
return((PWCHAR)NULL);
if((pLine = SearchLineInSectionByIndex(
pSection,
LineIndex
))
== (PLINE)NULL)
return((PWCHAR)NULL);
if((pName = SearchValueInLineW(
pLine,
ValueIndex
))
== (PWCHAR)NULL)
return((PWCHAR)NULL);
return(ProcessForStringSubsW(INFHandle,pName));
}
#endif
BOOLEAN
SpGetSectionKeyExists (
IN PVOID INFHandle,
IN PCHAR SectionName,
IN PCHAR Key
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSECTION pSection;
if((pSection = SearchSectionByName(
(PINF)INFHandle,
SectionName
))
== (PSECTION)NULL) {
return( FALSE );
}
if (SearchLineInSectionByKey(pSection, Key, NULL) == (PLINE)NULL) {
return( FALSE );
}
return( TRUE );
}
PCHAR
SlGetKeyName(
IN PVOID INFHandle,
IN PCHAR SectionName,
IN ULONG LineIndex
)
{
PSECTION pSection;
PLINE pLine;
pSection = SearchSectionByName((PINF)INFHandle,SectionName);
if(pSection == NULL) {
return(NULL);
}
pLine = SearchLineInSectionByIndex(pSection,LineIndex);
if(pLine == NULL) {
return(NULL);
}
return(pLine->pName);
}
#ifdef UNICODE
PWCHAR
SlGetKeyNameW(
IN PVOID INFHandle,
IN PCHAR SectionName,
IN ULONG LineIndex
)
{
PSECTION pSection;
PLINE pLine;
pSection = SearchSectionByName((PINF)INFHandle,SectionName);
if(pSection == NULL) {
return(NULL);
}
pLine = SearchLineInSectionByIndex(pSection,LineIndex);
if(pLine == NULL) {
return(NULL);
}
return(pLine->pNameW);
}
#endif
//
// given section name and key, return (0-based) ordinal for this entry
// (returns -1 on error)
//
ULONG
SlGetSectionKeyOrdinal(
IN PVOID INFHandle,
IN PCHAR SectionName,
IN PCHAR Key
)
{
PSECTION pSection;
PLINE pLine;
ULONG Ordinal;
pSection = SearchSectionByName(
(PINF)INFHandle,
SectionName
);
pLine = SearchLineInSectionByKey(
pSection,
Key,
&Ordinal
);
if(pLine == (PLINE)NULL) {
return (ULONG)-1;
} else {
return Ordinal;
}
}
//
// given section name, key and index return the value
//
PCHAR
SlGetSectionKeyIndex (
IN PVOID INFHandle,
IN PCHAR SectionName,
IN PCHAR Key,
IN ULONG ValueIndex
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSECTION pSection;
PLINE pLine;
PCHAR pName;
if((pSection = SearchSectionByName(
(PINF)INFHandle,
SectionName
))
== (PSECTION)NULL)
return((PCHAR)NULL);
if((pLine = SearchLineInSectionByKey(
pSection,
Key,
NULL
))
== (PLINE)NULL)
return((PCHAR)NULL);
if((pName = SearchValueInLine(
pLine,
ValueIndex
))
== (PCHAR)NULL)
return((PCHAR)NULL);
return(ProcessForStringSubs(INFHandle,pName));
}
#ifdef UNICODE
//
// given section name, key and index return the value
//
PWCHAR
SlGetSectionKeyIndexW (
IN PVOID INFHandle,
IN PCHAR SectionName,
IN PCHAR Key,
IN ULONG ValueIndex
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSECTION pSection;
PLINE pLine;
PWCHAR pName;
if((pSection = SearchSectionByName(
(PINF)INFHandle,
SectionName
))
== (PSECTION)NULL)
return((PWCHAR)NULL);
if((pLine = SearchLineInSectionByKey(
pSection,
Key,
NULL
))
== (PLINE)NULL)
return((PWCHAR)NULL);
if((pName = SearchValueInLineW(
pLine,
ValueIndex
))
== (PWCHAR)NULL)
return((PWCHAR)NULL);
return(ProcessForStringSubsW(INFHandle,pName));
}
#endif
ULONG
SlCountLinesInSection(
IN PVOID INFHandle,
IN PCHAR SectionName
)
{
PSECTION pSection;
PLINE pLine;
ULONG Count;
if((pSection = SearchSectionByName((PINF)INFHandle,SectionName)) == NULL) {
return((ULONG)(-1));
}
for(pLine = pSection->pLine, Count = 0;
pLine;
pLine = pLine->pNext, Count++
);
return(Count);
}
PCHAR
SearchValueInLine(
IN PLINE pLine,
IN ULONG ValueIndex
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PVALUE pValue;
ULONG i;
if (pLine == (PLINE)NULL)
return ((PCHAR)NULL);
if (ValueIndex < NUMBER_OF_INTERNAL_VALUES) {
return pLine->InternalValues[ValueIndex];
}
pValue = pLine->pFirstExternalValue;
for (i = NUMBER_OF_INTERNAL_VALUES;
i < ValueIndex && ((pValue = pValue->pNext) != (PVALUE)NULL);
i++)
;
return (PCHAR)((pValue != NULL) ? pValue->pName : NULL);
}
#ifdef UNICODE
PWCHAR
SearchValueInLineW(
IN PLINE pLine,
IN ULONG ValueIndex
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PVALUE pValue;
ULONG i;
if (pLine == (PLINE)NULL)
return ((PWCHAR)NULL);
if (ValueIndex < NUMBER_OF_INTERNAL_VALUES) {
return pLine->InternalValuesW[ValueIndex];
}
pValue = pLine->pFirstExternalValue;
for (i = NUMBER_OF_INTERNAL_VALUES;
i < ValueIndex && ((pValue = pValue->pNext) != (PVALUE)NULL);
i++)
;
return (PWCHAR)((pValue != NULL) ? pValue->pNameW : NULL);
}
#endif
PLINE
SearchLineInSectionByKey(
IN PSECTION pSection,
IN PCHAR Key,
OUT PULONG pOrdinal OPTIONAL
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PLINE pLine;
ULONG LineOrdinal;
if (pSection == (PSECTION)NULL || Key == (PCHAR)NULL) {
return ((PLINE)NULL);
}
pLine = pSection->pLine;
LineOrdinal = 0;
while ((pLine != (PLINE)NULL) && (pLine->pName == NULL || _stricmp(pLine->pName, Key))) {
pLine = pLine->pNext;
LineOrdinal++;
}
if(pLine && pOrdinal) {
*pOrdinal = LineOrdinal;
}
return pLine;
}
PLINE
SearchLineInSectionByIndex(
IN PSECTION pSection,
IN ULONG LineIndex
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PLINE pLine;
ULONG i;
//
// Validate the parameters passed in
//
if (pSection == (PSECTION)NULL) {
return ((PLINE)NULL);
}
//
// find the start of the line list in the section passed in
//
pLine = pSection->pLine;
//
// traverse down the current line list to the LineIndex th line
//
for (i = 0; i < LineIndex && ((pLine = pLine->pNext) != (PLINE)NULL); i++) {
;
}
//
// return the Line found
//
return pLine;
}
PSECTION
SearchSectionByName(
IN PINF pINF,
IN PCHAR SectionName
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSECTION pSection;
//
// validate the parameters passed in
//
if (pINF == (PINF)NULL || SectionName == (PCHAR)NULL) {
return ((PSECTION)NULL);
}
//
// find the section list
//
pSection = pINF->pSection;
//
// traverse down the section list searching each section for the section
// name mentioned
//
while ((pSection != (PSECTION)NULL) && _stricmp(pSection->pName, SectionName)) {
pSection = pSection->pNext;
}
//
// return the section at which we stopped (either NULL or the section
// which was found
//
return pSection;
}
PCHAR
ProcessForStringSubs(
IN PINF pInf,
IN PCHAR String
)
{
unsigned Len;
PCHAR ReturnString;
PSECTION pSection;
PLINE pLine;
//
// Assume no substitution necessary.
//
ReturnString = String;
//
// If it starts and ends with % then look it up in the
// strings section. Note the initial check before doing a
// strlen, to preserve performance in the 99% case where
// there is no substitution.
//
if((String[0] == '%') && ((Len = strlen(String)) > 2) && (String[Len-1] == '%')) {
for(pSection = pInf->pSection; pSection; pSection=pSection->pNext) {
if(pSection->pName && !_stricmp(pSection->pName,"Strings")) {
break;
}
}
if(pSection) {
for(pLine = pSection->pLine; pLine; pLine=pLine->pNext) {
if(pLine->pName
&& !_strnicmp(pLine->pName,String+1,Len-2)
&& (pLine->pName[Len-2] == 0))
{
break;
}
}
if(pLine && pLine->InternalValues[0]) {
ReturnString = pLine->InternalValues[0];
}
}
}
return(ReturnString);
}
#ifdef UNICODE
PWCHAR
ProcessForStringSubsW(
IN PINF pInf,
IN PWCHAR String
)
{
unsigned Len;
PWCHAR ReturnString;
PSECTION pSection;
PLINE pLine;
//
// Assume no substitution necessary.
//
ReturnString = String;
//
// If it starts and ends with % then look it up in the
// strings section. Note the initial check before doing a
// strlen, to preserve performance in the 99% case where
// there is no substitution.
//
if((String[0] == L'%') && ((Len = wcslen(String)) > 2) && (String[Len-1] == L'%')) {
for(pSection = pInf->pSection; pSection; pSection=pSection->pNext) {
if(pSection->pName && !_stricmp(pSection->pName,"Strings")) {
break;
}
}
if(pSection) {
for(pLine = pSection->pLine; pLine; pLine=pLine->pNext) {
if(pLine->pName
&& !_tcsnicmp(pLine->pNameW,String+1,Len-2)
&& (pLine->pName[Len-2] == 0))
{
break;
}
}
if(pLine && pLine->InternalValuesW[0]) {
ReturnString = pLine->InternalValuesW[0];
}
}
}
return(ReturnString);
}
#endif
// what follows was alparse.c
//
// Globals used to make building the lists easier
//
PINF pINF;
PSECTION pSectionRecord;
PLINE pLineRecord;
PVALUE pValueRecord;
PCHAR * pInternalValue;
PCHAR * pLastInternalValue;
#ifdef UNICODE
PWCHAR * pInternalValueW;
PWCHAR * pLastInternalValueW;
#endif
//
// Globals used by the token parser
//
// string terminators are the whitespace characters (isspace: space, tab,
// linefeed, formfeed, vertical tab, carriage return) or the chars given below
CHAR StringTerminators[] = "[]=,\t \"\n\f\v\r";
PCHAR QStringTerminators = StringTerminators+6;
PCHAR EmptyValue;
#define STRING_HEAP_SIZE 1024
ULONG_PTR StringHeapFree = 0;
ULONG_PTR StringHeapLimit = 0;
#if 0 && DBG
#define HEAP_SIZE(_size) (((_size) + BL_GRANULARITY - 1) & ~(BL_GRANULARITY - 1))
#define MAX(_a,_b) (((_a) > (_b)) ? (_a) : (_b))
#define MIN(_a,_b) (((_a) < (_b)) ? (_a) : (_b))
ULONG nStrings = 0;
ULONG maxString = 0;
ULONG bytesStrings = 0;
ULONG wasteStrings = 0;
ULONG stringsWithNLength[12] = {0};
VOID
GetStatistics (
PINF pINF
)
{
ULONG nSections = 0;
ULONG nLines = 0;
ULONG nValues = 0;
ULONG maxLinesPerSection = 0;
ULONG maxValuesPerLine = 0;
ULONG maxValuesPerSection = 0;
ULONG bytesSections = 0;
ULONG bytesLines = 0;
ULONG bytesValues = 0;
ULONG sectionsWithNLines[12] = {0};
ULONG linesWithNValues[12] = {0};
ULONG sectionsWithNValues[12] = {0};
ULONG linesThisSection;
ULONG valuesThisLine;
ULONG valuesThisSection;
PSECTION section;
PLINE line;
PVALUE value;
ULONG i;
section = pINF->pSection;
while ( section != NULL ) {
nSections++;
bytesSections += HEAP_SIZE(sizeof(SECTION));
linesThisSection = 0;
valuesThisSection = 0;
line = section->pLine;
while ( line != NULL ) {
linesThisSection++;
bytesLines += HEAP_SIZE(sizeof(LINE));
valuesThisLine = 0;
for ( i = 0; i < NUMBER_OF_INTERNAL_VALUES; i++ ) {
if ( line->InternalValues[i] != NULL ) {
valuesThisLine++;
}
}
value = line->pFirstExternalValue;
while ( value != NULL ) {
valuesThisLine++;
bytesValues += HEAP_SIZE(sizeof(VALUE));
value = value->pNext;
}
nValues += valuesThisLine;
valuesThisSection += valuesThisLine;
maxValuesPerLine = MAX(maxValuesPerLine, valuesThisLine);
linesWithNValues[MIN(valuesThisLine,11)]++;
line = line->pNext;
}
nLines += linesThisSection;
maxLinesPerSection = MAX(maxLinesPerSection, linesThisSection);
sectionsWithNLines[MIN(linesThisSection,11)]++;
maxValuesPerSection = MAX(maxValuesPerSection, valuesThisSection);
sectionsWithNValues[MIN(valuesThisSection,11)]++;
section = section->pNext;
}
DbgPrint( "Number of sections = %d\n", nSections );
DbgPrint( "Bytes in sections = %d\n", bytesSections );
DbgPrint( "\n" );
DbgPrint( "Number of lines = %d\n", nLines );
DbgPrint( "Bytes in lines = %d\n", bytesLines );
DbgPrint( "\n" );
DbgPrint( "Number of values = %d\n", nValues );
DbgPrint( "Bytes in values = %d\n", bytesValues );
DbgPrint( "\n" );
DbgPrint( "Max lines/section = %d\n", maxLinesPerSection );
DbgPrint( "Max values/line = %d\n", maxValuesPerLine );
DbgPrint( "Max values/section = %d\n", maxValuesPerSection );
DbgPrint( "\n" );
DbgPrint( "Number of strings = %d\n", nStrings );
DbgPrint( "Bytes in strings = %d\n", bytesStrings );
DbgPrint( "Wasted bytes in strings = %d\n", wasteStrings + (StringHeapLimit - StringHeapFree) );
DbgPrint( "Longest string = %d\n", maxString );
DbgPrint( "\n" );
DbgPrint( "Sections with N lines =" );
for ( i = 0; i < 12; i++ ) {
DbgPrint( " %5d", sectionsWithNLines[i] );
}
DbgPrint( "\n" );
DbgPrint( "Sections with N values =" );
for ( i = 0; i < 12; i++ ) {
DbgPrint( " %5d", sectionsWithNValues[i] );
}
DbgPrint( "\n" );
DbgPrint( "Lines with N values =" );
for ( i = 0; i < 12; i++ ) {
DbgPrint( " %5d", linesWithNValues[i] );
}
DbgPrint( "\n" );
DbgPrint( "String with length N =" );
for ( i = 0; i < 12; i++ ) {
DbgPrint( " %5d", stringsWithNLength[i] );
}
DbgPrint( "\n" );
DbgBreakPoint();
}
#endif // DBG
//
// Main parser routine
//
PVOID
ParseInfBuffer(
PCHAR INFFile,
PCHAR Buffer,
ULONG Size,
PULONG ErrorLine
)
/*++
Routine Description:
Given a character buffer containing the INF file, this routine parses
the INF into an internal form with Section records, Line records and
Value records.
Arguments:
Buffer - contains to ptr to a buffer containing the INF file
Size - contains the size of the buffer.
ErrorLine - if a parse error occurs, this variable receives the line
number of the line containing the error.
Return Value:
PVOID - INF handle ptr to be used in subsequent INF calls.
--*/
{
PCHAR Stream, MaxStream, pchSectionName = NULL, pchValue = NULL;
ULONG State, InfLine;
TOKEN Token;
BOOLEAN Done;
BOOLEAN Error;
ARC_STATUS ErrorCode;
//
// Initialise the globals
//
pINF = (PINF)NULL;
pSectionRecord = (PSECTION)NULL;
pLineRecord = (PLINE)NULL;
pValueRecord = (PVALUE)NULL;
pInternalValue = NULL;
pLastInternalValue = NULL;
#ifdef UNICODE
pInternalValueW = NULL;
pLastInternalValueW = NULL;
#endif
//
// Need EmptyValue to point at a nul character
//
EmptyValue = StringTerminators + strlen(StringTerminators);
//
// Get INF record
//
if ((pINF = (PINF)BlAllocateHeap(sizeof(INF))) == NULL) {
SlNoMemoryError();
return NULL;
}
pINF->pSection = NULL;
//
// Set initial state
//
State = 1;
InfLine = 1;
Stream = Buffer;
MaxStream = Buffer + Size;
Done = FALSE;
Error = FALSE;
//
// Enter token processing loop
//
while (!Done) {
Token = SpGetToken(&Stream, MaxStream);
switch (State) {
//
// STATE1: Start of file, this state remains till first
// section is found
// Valid Tokens: TOK_EOL, TOK_EOF, TOK_LBRACE
case 1:
switch (Token.Type) {
case TOK_EOL:
break;
case TOK_EOF:
Done = TRUE;
break;
case TOK_LBRACE:
State = 2;
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
//
// STATE 2: Section LBRACE has been received, expecting STRING
//
// Valid Tokens: TOK_STRING
//
case 2:
switch (Token.Type) {
case TOK_STRING:
State = 3;
pchSectionName = Token.pValue;
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
//
// STATE 3: Section Name received, expecting RBRACE
//
// Valid Tokens: TOK_RBRACE
//
case 3:
switch (Token.Type) {
case TOK_RBRACE:
State = 4;
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
//
// STATE 4: Section Definition Complete, expecting EOL
//
// Valid Tokens: TOK_EOL, TOK_EOF
//
case 4:
switch (Token.Type) {
case TOK_EOL:
if ((ErrorCode = SpAppendSection(
pchSectionName
#ifdef UNICODE
,SlCopyStringAW(pchSectionName)
#endif
)) != ESUCCESS) {
Error = Done = TRUE;
} else {
pchSectionName = NULL;
State = 5;
}
break;
case TOK_EOF:
if ((ErrorCode = SpAppendSection(
pchSectionName
#ifdef UNICODE
,SlCopyStringAW(pchSectionName)
#endif
)) != ESUCCESS)
Error = Done = TRUE;
else {
pchSectionName = NULL;
Done = TRUE;
}
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
break;
}
break;
//
// STATE 5: Expecting Section Lines
//
// Valid Tokens: TOK_EOL, TOK_EOF, TOK_STRING, TOK_LBRACE
//
case 5:
switch (Token.Type) {
case TOK_EOL:
break;
case TOK_EOF:
Done = TRUE;
break;
case TOK_STRING:
pchValue = Token.pValue;
State = 6;
break;
case TOK_LBRACE:
State = 2;
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
//
// STATE 6: String returned, not sure whether it is key or value
//
// Valid Tokens: TOK_EOL, TOK_EOF, TOK_COMMA, TOK_EQUAL
//
case 6:
switch (Token.Type) {
case TOK_EOL:
if ( (ErrorCode = SpAppendLine(
NULL
#ifdef UNICODE
,NULL
#endif
)) != ESUCCESS ||
(ErrorCode = SpAppendValue(
pchValue
#ifdef UNICODE
,SlCopyStringAW(pchValue)
#endif
)) !=ESUCCESS )
Error = Done = TRUE;
else {
pchValue = NULL;
State = 5;
}
break;
case TOK_EOF:
if ( (ErrorCode = SpAppendLine(
NULL
#ifdef UNICODE
,NULL
#endif
)) != ESUCCESS ||
(ErrorCode = SpAppendValue(
pchValue
#ifdef UNICODE
,SlCopyStringAW(pchValue)
#endif
)) !=ESUCCESS )
Error = Done = TRUE;
else {
pchValue = NULL;
Done = TRUE;
}
break;
case TOK_COMMA:
if ( (ErrorCode = SpAppendLine(
NULL
#ifdef UNICODE
,NULL
#endif
)) != ESUCCESS ||
(ErrorCode = SpAppendValue(
pchValue
#ifdef UNICODE
,SlCopyStringAW(pchValue)
#endif
)) !=ESUCCESS )
Error = Done = TRUE;
else {
pchValue = NULL;
State = 7;
}
break;
case TOK_EQUAL:
if ( (ErrorCode = SpAppendLine(
pchValue
#ifdef UNICODE
,SlCopyStringAW(pchValue)
#endif
)) !=ESUCCESS)
Error = Done = TRUE;
else {
pchValue = NULL;
State = 8;
}
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
//
// STATE 7: Comma received, Expecting another string
//
// Valid Tokens: TOK_STRING TOK_COMMA
// A comma means we have an empty value.
//
case 7:
switch (Token.Type) {
case TOK_COMMA:
Token.pValue = EmptyValue;
if ((ErrorCode = SpAppendValue(
Token.pValue
#ifdef UNICODE
,SlCopyStringAW(Token.pValue)
#endif
)) != ESUCCESS) {
Error = Done = TRUE;
}
//
// State stays at 7 because we are expecting a string
//
break;
case TOK_STRING:
if ((ErrorCode = SpAppendValue(
Token.pValue
#ifdef UNICODE
,SlCopyStringAW(Token.pValue)
#endif
)) != ESUCCESS)
Error = Done = TRUE;
else
State = 9;
break;
case TOK_EOL:
case TOK_EOF:
Token.pValue = EmptyValue;
if ((ErrorCode = SpAppendValue(
Token.pValue
#ifdef UNICODE
,SlCopyStringAW(Token.pValue)
#endif
)) != ESUCCESS)
Error = Done = TRUE;
else
State = 9;
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
//
// STATE 8: Equal received, Expecting another string
// If none, assume there is a single empty string on the RHS
//
// Valid Tokens: TOK_STRING, TOK_EOL, TOK_EOF
//
case 8:
switch (Token.Type) {
case TOK_EOF:
Token.pValue = EmptyValue;
if((ErrorCode = SpAppendValue(
Token.pValue
#ifdef UNICODE
,SlCopyStringAW(Token.pValue)
#endif
)) != ESUCCESS) {
Error = TRUE;
}
Done = TRUE;
break;
case TOK_EOL:
Token.pValue = EmptyValue;
if((ErrorCode = SpAppendValue(
Token.pValue
#ifdef UNICODE
,SlCopyStringAW(Token.pValue)
#endif
)) != ESUCCESS) {
Error = TRUE;
Done = TRUE;
} else {
State = 5;
}
break;
case TOK_STRING:
if ((ErrorCode = SpAppendValue(
Token.pValue
#ifdef UNICODE
,SlCopyStringAW(Token.pValue)
#endif
)) != ESUCCESS)
Error = Done = TRUE;
else
State = 9;
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
//
// STATE 9: String received after equal, value string
//
// Valid Tokens: TOK_EOL, TOK_EOF, TOK_COMMA
//
case 9:
switch (Token.Type) {
case TOK_EOL:
State = 5;
break;
case TOK_EOF:
Done = TRUE;
break;
case TOK_COMMA:
State = 7;
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
//
// STATE 10: Value string definitely received
//
// Valid Tokens: TOK_EOL, TOK_EOF, TOK_COMMA
//
case 10:
switch (Token.Type) {
case TOK_EOL:
State =5;
break;
case TOK_EOF:
Done = TRUE;
break;
case TOK_COMMA:
State = 7;
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
SlBadInfLineError(InfLine, INFFile);
break;
}
break;
default:
Error = Done = TRUE;
ErrorCode = EINVAL;
break;
} // end switch(State)
if (Error) {
switch (ErrorCode) {
case EINVAL:
*ErrorLine = InfLine;
break;
case ENOMEM:
SlBadInfLineError(InfLine, INFFile);
break;
default:
break;
}
ErrorCode = SpFreeINFBuffer((PVOID)pINF);
if (pchSectionName != (PCHAR)NULL) {
SpFree(pchSectionName);
}
if (pchValue != (PCHAR)NULL) {
SpFree(pchValue);
}
pINF = (PINF)NULL;
}
else {
//
// Keep track of line numbers so that we can display Errors
//
if (Token.Type == TOK_EOL)
InfLine++;
}
} // End while
#if 0 && DBG
GetStatistics(pINF);
#endif
return((PVOID)pINF);
}
ARC_STATUS
SpAppendSection(
IN PCHAR pSectionName
#ifdef UNICODE
, IN PWCHAR pSectionNameW
#endif
)
/*++
Routine Description:
This appends a new section to the section list in the current INF.
All further lines and values pertain to this new section, so it resets
the line list and value lists too.
Arguments:
pSectionName - Name of the new section. ( [SectionName] )
Return Value:
ESUCCESS - if successful.
ENOMEM - if memory allocation failed.
EINVAL - if invalid parameters passed in or the INF buffer not
initialised
--*/
{
PSECTION pNewSection;
//
// Check to see if INF initialised and the parameter passed in is valid
//
if (pINF == (PINF)NULL || pSectionName == (PCHAR)NULL) {
if(pchINFName) {
SlFriendlyError(
EINVAL,
pchINFName,
__LINE__,
__FILE__
);
} else {
SlError(EINVAL);
}
return EINVAL;
}
//
// See if we already have a section by this name. If so we want
// to merge sections.
//
for(pNewSection=pINF->pSection; pNewSection; pNewSection=pNewSection->pNext) {
if(pNewSection->pName && !_stricmp(pNewSection->pName,pSectionName)) {
break;
}
}
if(pNewSection) {
//
// Set pLineRecord to point to the list line currently in the section.
//
for(pLineRecord = pNewSection->pLine;
pLineRecord && pLineRecord->pNext;
pLineRecord = pLineRecord->pNext)
;
} else {
//
// Allocate memory for the new section
//
if ((pNewSection = (PSECTION)BlAllocateHeap(sizeof(SECTION))) == (PSECTION)NULL) {
SlNoMemoryError();
return ENOMEM;
}
//
// initialise the new section
//
pNewSection->pNext = NULL;
pNewSection->pLine = NULL;
pNewSection->pName = pSectionName;
#ifdef UNICODE
pNewSection->pNameW = pSectionNameW;
#endif
//
// link it in
//
pNewSection->pNext = pINF->pSection;
pINF->pSection = pNewSection;
//
// reset the current line record
//
pLineRecord = NULL;
}
pSectionRecord = pNewSection;
pValueRecord = NULL;
pInternalValue = NULL;
pLastInternalValue = NULL;
#ifdef UNICODE
pInternalValueW = NULL;
pLastInternalValueW = NULL;
#endif
return ESUCCESS;
}
ARC_STATUS
SpAppendLine(
IN PCHAR pLineKey
#ifdef UNICODE
, IN PWCHAR pLineKeyW
#endif
)
/*++
Routine Description:
This appends a new line to the line list in the current section.
All further values pertain to this new line, so it resets
the value list too.
Arguments:
pLineKey - Key to be used for the current line, this could be NULL.
Return Value:
ESUCCESS - if successful.
ENOMEM - if memory allocation failed.
EINVAL - if invalid parameters passed in or current section not
initialised
--*/
{
PLINE pNewLine;
ULONG i;
//
// Check to see if current section initialised
//
if (pSectionRecord == (PSECTION)NULL) {
if(pchINFName) {
SlFriendlyError(
EINVAL,
pchINFName,
__LINE__,
__FILE__
);
} else {
SlError(EINVAL);
}
return EINVAL;
}
//
// Allocate memory for the new Line
//
if ((pNewLine = (PLINE)BlAllocateHeap(sizeof(LINE))) == (PLINE)NULL) {
SlNoMemoryError();
return ENOMEM;
}
//
// Link it in
//
pNewLine->pNext = (PLINE)NULL;
for ( i = 0; i < NUMBER_OF_INTERNAL_VALUES; i++ ) {
pNewLine->InternalValues[i] = NULL;
#ifdef UNICODE
pNewLine->InternalValuesW[i] = NULL;
#endif
}
pNewLine->pFirstExternalValue = (PVALUE)NULL;
pNewLine->pName = pLineKey;
#ifdef UNICODE
pNewLine->pNameW = pLineKeyW;
#endif
if (pLineRecord == (PLINE)NULL) {
pSectionRecord->pLine = pNewLine;
}
else {
pLineRecord->pNext = pNewLine;
}
pLineRecord = pNewLine;
//
// Reset the current value record
//
pValueRecord = (PVALUE)NULL;
pInternalValue = &pNewLine->InternalValues[0];
pLastInternalValue = &pNewLine->InternalValues[NUMBER_OF_INTERNAL_VALUES];
#ifdef UNICODE
pInternalValueW = &pNewLine->InternalValuesW[0];
pLastInternalValueW = &pNewLine->InternalValuesW[NUMBER_OF_INTERNAL_VALUES];
#endif
return ESUCCESS;
}
ARC_STATUS
SpAppendValue(
IN PCHAR pValueString
#ifdef UNICODE
, IN PWCHAR pValueStringW
#endif
)
/*++
Routine Description:
This appends a new value to the value list in the current line.
Arguments:
pValueString - The value string to be added.
Return Value:
ESUCCESS - if successful.
ENOMEM - if memory allocation failed.
EINVAL - if invalid parameters passed in or current line not
initialised.
--*/
{
PVALUE pNewValue;
//
// Check to see if current line record has been initialised and
// the parameter passed in is valid
//
if (pLineRecord == (PLINE)NULL || pValueString == (PCHAR)NULL) {
if(pchINFName) {
SlFriendlyError(
EINVAL,
pchINFName,
__LINE__,
__FILE__
);
} else {
SlError(EINVAL);
}
return EINVAL;
}
if (pInternalValue != NULL) {
*pInternalValue++ = pValueString;
if (pInternalValue >= pLastInternalValue) {
pInternalValue = NULL;
}
#ifdef UNICODE
*pInternalValueW++ = pValueStringW;
if (pInternalValueW >= pLastInternalValueW) {
pInternalValueW = NULL;
}
#endif
return ESUCCESS;
}
//
// Allocate memory for the new value record
//
if ((pNewValue = (PVALUE)BlAllocateHeap(sizeof(VALUE))) == (PVALUE)NULL) {
SlNoMemoryError();
return ENOMEM;
}
//
// Link it in.
//
pNewValue->pNext = (PVALUE)NULL;
pNewValue->pName = pValueString;
#ifdef UNICODE
pNewValue->pNameW = pValueStringW;
#endif
if (pValueRecord == (PVALUE)NULL)
pLineRecord->pFirstExternalValue = pNewValue;
else
pValueRecord->pNext = pNewValue;
pValueRecord = pNewValue;
return ESUCCESS;
}
PVOID
SpAllocateStringHeap (
IN ULONG Size
)
/*++
Routine Description:
This routine allocates memory from the OS loader heap.
Arguments:
Size - Supplies the size of block required in bytes.
Return Value:
If a free block of memory of the specified size is available, then
the address of the block is returned. Otherwise, NULL is returned.
--*/
{
PVOID HeapBlock;
ULONG_PTR Block;
if (Size >= STRING_HEAP_SIZE) {
return BlAllocateHeap(Size);
}
if ((StringHeapFree + Size) >= StringHeapLimit) {
#if 0 && DBG
wasteStrings += (StringHeapLimit - StringHeapFree);
#endif
HeapBlock = BlAllocateHeap( STRING_HEAP_SIZE );
if ( HeapBlock == NULL ) {
return NULL;
}
StringHeapFree = (ULONG_PTR)HeapBlock;
StringHeapLimit = StringHeapFree + STRING_HEAP_SIZE;
}
Block = StringHeapFree;
StringHeapFree += Size;
#if 0 && DBG
nStrings++;
bytesStrings += Size;
stringsWithNLength[MIN(Size,11)]++;
maxString = MAX(maxString, Size);
#endif
return (PVOID)Block;
}
TOKEN
SpGetToken(
IN OUT PCHAR *Stream,
IN PCHAR MaxStream
)
/*++
Routine Description:
This function returns the Next token from the configuration stream.
Arguments:
Stream - Supplies the address of the configuration stream. Returns
the address of where to start looking for tokens within the
stream.
MaxStream - Supplies the address of the last character in the stream.
Return Value:
TOKEN - Returns the next token
--*/
{
PCHAR pch, pchStart, pchNew;
ULONG Length;
TOKEN Token;
//
// Skip whitespace (except for eol)
//
pch = *Stream;
while (pch < MaxStream && *pch != '\n' && isspace(*pch))
pch++;
//
// Check for comments and remove them
//
if (pch < MaxStream &&
((*pch == '#') ||
(*pch == ';') ||
(*pch == '/' && pch+1 < MaxStream && *(pch+1) =='/')))
while (pch < MaxStream && *pch != '\n')
pch++;
//
// Check to see if EOF has been reached, set the token to the right
// value
//
if ((pch >= MaxStream) || (*pch == 26)) {
*Stream = pch;
Token.Type = TOK_EOF;
Token.pValue = NULL;
return Token;
}
switch (*pch) {
case '[' :
pch++;
Token.Type = TOK_LBRACE;
Token.pValue = NULL;
break;
case ']' :
pch++;
Token.Type = TOK_RBRACE;
Token.pValue = NULL;
break;
case '=' :
pch++;
Token.Type = TOK_EQUAL;
Token.pValue = NULL;
break;
case ',' :
pch++;
Token.Type = TOK_COMMA;
Token.pValue = NULL;
break;
case '\n' :
pch++;
Token.Type = TOK_EOL;
Token.pValue = NULL;
break;
case '\"':
pch++;
//
// determine quoted string
//
pchStart = pch;
while (pch < MaxStream && (strchr(QStringTerminators,*pch) == NULL)) {
pch++;
}
if (pch >=MaxStream || *pch != '\"') {
Token.Type = TOK_ERRPARSE;
Token.pValue = NULL;
} else {
//
// We require a quoted string to end with a double-quote.
// (If the string ended with anything else, the if() above
// would not have let us into the else clause.) The quote
// character is irrelevent, however, and can be overwritten.
// So we'll save some heap and use the string in-place.
// No need to make a copy.
//
// Note that this alters the image of txtsetup.sif we pass
// to setupdd.sys. Thus the inf parser in setupdd.sys must
// be able to treat a nul character as if it were a terminating
// double quote.
//
*pch++ = 0;
Token.Type = TOK_STRING;
Token.pValue = pchStart;
}
break;
default:
//
// determine regular string
//
pchStart = pch;
while (pch < MaxStream && (strchr(StringTerminators,*pch) == NULL)) {
pch++;
}
if (pch == pchStart) {
pch++;
Token.Type = TOK_ERRPARSE;
Token.pValue = NULL;
}
else {
Length = (ULONG)(pch - pchStart);
if ((pchNew = SpAllocateStringHeap(Length + 1)) == NULL) {
Token.Type = TOK_ERRNOMEM;
Token.pValue = NULL;
}
else {
strncpy(pchNew, pchStart, Length);
pchNew[Length] = 0;
Token.Type = TOK_STRING;
Token.pValue = pchNew;
}
}
break;
}
*Stream = pch;
return (Token);
}
PCHAR
SlSearchSection(
IN PCHAR SectionName,
IN PCHAR TargetName
)
/*++
Routine Description:
Searches a section in the INF file to match a name from the ARC identifier
with the canonical shortname.
If a string starts with *, then use strstr to find it in the node's id
string, else use stricmp.
[Map.Computer]
msjazz_up = *Jazz
desksta1_up = "DESKTECH-ARCStation I"
pica61_up = "PICA-61"
duo_mp = *Duo
[Map.Computer]
DECjensen = "DEC-20Jensen"
DECjensen = "DEC-10Jensen"
Arguments:
SectionName - Supplies the name of the section ("Map.Computer")
TargetName - Supplies the ARC string to be matched ("DEC-20Jensen")
Return Value:
NULL - No match was found.
PCHAR - Pointer to the canonical shortname of the device.
--*/
{
ULONG i;
PCHAR SearchName;
//
// Enumerate the entries in the section. If the 0 value
// begins with a *, then see if the system name contains the string that
// follows. Otherwise, do a case-insensitive compare on the name.
//
for (i=0;;i++) {
SearchName = SlGetSectionLineIndex(InfFile,
SectionName,
i,
0);
if (SearchName==NULL) {
//
// we have enumerated the entire section without finding a match,
// return failure.
//
return(NULL);
}
if (SearchName[0]=='*') {
if (strstr(TargetName,SearchName+1) != 0) {
//
// we have a match
//
break;
}
} else {
if (_stricmp(TargetName, SearchName) == 0) {
//
// we have a match
//
break;
}
}
}
//
// i is the index into the section of the short machine name
//
return(SlGetKeyName(InfFile,
SectionName,
i));
}
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