642 lines
15 KiB
C
642 lines
15 KiB
C
/*
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* Infparse.c - Setup.inf parsing code.
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* Clark Cyr, Mike Colee, Todd Laney
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* Copyright (C) Microsoft, 1989
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* March 15, 1989
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*
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* Modification History:
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*
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* 3/15/89 CC Clark wrote this code for control Panel. This is windows
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* code.
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*
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* 3/20/89 MC Decided this code would work for Dos and windows portion
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* of setup. take out windows specifc stuff like local alloc's
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* and dialog stuff. Replace it with standard C run time calls.
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*
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* 3/24/89 Toddla TOTAL rewrite! nothing is the same any more.
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*
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* 6/29/89 MC fixed getprofilestring func to not strip quotes if more
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* than one field exists.
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*/
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#include <windows.h>
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#include <mmsystem.h>
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#include <string.h>
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#include <stdlib.h>
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#include "drivers.h"
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#include "sulib.h"
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/*** hack. to avoid realloc problems we make READ_BUFSIZE
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as big as the inf file, thus avoiding any reallocs */
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#define READ_BUFSIZE 27000 /* size of inf buffer */
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#define TMP_BUFSIZE 1024 /* size of temp reads */
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#define EOF 0x1A
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#define ISEOL(c) ((c) == '\n' || (c) == '\r' || (c) == '\0' || (c) == EOF)
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#define ISSEP(c) ((c) == '=' || (c) == ',')
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#define ISWHITE(c) ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) == '\r')
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#define ISNOISE(c) ((c) == '"')
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#define QUOTE '"'
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#define EQUAL '='
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PINF pinfDefault = NULL;
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static LPSTR pBuf;
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static PINF pInf;
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static UINT iBuf;
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static UINT iInf;
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/* Globaly used pointers to non-translatable text strings. */
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extern TCHAR *pszPATH;
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/* Local prototypes */
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BOOL multifields(PINF);
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static TCHAR GETC(int fh)
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{
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register UINT n;
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if (!pBuf)
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return EOF;
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n = iBuf % TMP_BUFSIZE;
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if (n == 0)
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{
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_lread(fh,pBuf,TMP_BUFSIZE);
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}
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iBuf++;
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return pBuf[n];
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}
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static void PUTC(TCHAR c)
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{
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if (!pInf)
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return;
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pInf[iInf++] = c;
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}
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static void MODIFYC(TCHAR c)
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{
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if (!pInf)
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return;
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pInf[iInf++ - 1] = c;
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}
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static TCHAR LASTC(void) {
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if (!pInf) return ' ';
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if (iInf == 0) {
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return ' ';
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}
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return pInf[iInf - 1];
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}
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/* int infLoadFile() Load a entire INF file into memory
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* comments are removed, each line is terminated
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* by a \0 each section is terminated by a \0\0
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* ONLY spaces inside of " " are preserved
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* the end of file is marked with a ^Z
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*
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* RETURNS: A pointer to a block of memory containg file, NULL if failure
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*
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*/
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PINF infLoadFile(int fh)
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{
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UINT len;
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TCHAR c;
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BOOL fQuote = FALSE;
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BOOL inSectionName = FALSE;
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if (fh == -1)
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return NULL;
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len = (UINT)_llseek(fh,0L,SEEK_END);
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_llseek(fh,0L,SEEK_SET);
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iBuf = 0;
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iInf = 0;
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pBuf = ALLOC(TMP_BUFSIZE); // temp buffer
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if (!pBuf)
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return NULL;
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pInf = FALLOC(len*sizeof(TCHAR)); // destination, at least as big as file
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if (!pInf) {
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FREE((HANDLE)pBuf);
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return NULL;
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}
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while (iBuf < len)
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{
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c = GETC(fh);
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loop:
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if (iBuf >= len)
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break;
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switch (c)
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{
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case TEXT('['):
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inSectionName = TRUE;
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PUTC(c);
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break;
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case TEXT(']'):
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if (inSectionName) {
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if (LASTC() == TEXT(' ')) {
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MODIFYC(c);
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} else {
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PUTC(c);
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}
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inSectionName = FALSE;
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} else {
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PUTC(c);
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}
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break;
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case TEXT('\r'): /* ignore '\r' */
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break;
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case TEXT('\n'):
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for (; ISWHITE(c); c = GETC(fh))
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;
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if (c != TEXT(';'))
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PUTC(0); /* all lines end in a \0 */
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if (c == TEXT('[')) {
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PUTC(0); /* all sections end with \0\0 */
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}
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fQuote = FALSE;
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goto loop;
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break;
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case TEXT('\t'):
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case TEXT(' '):
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if (inSectionName) {
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if (LASTC() != TEXT(' ') && LASTC() != TEXT(']'))
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PUTC(TEXT(' '));
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} else {
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if (fQuote)
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PUTC(c);
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}
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break;
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case TEXT('"'):
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fQuote = !fQuote;
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PUTC(c);
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break;
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case TEXT(';'):
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for (; !ISEOL(c); c = GETC(fh))
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;
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goto loop;
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break;
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default:
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PUTC(c);
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break;
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}
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}
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PUTC(0);
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PUTC(0);
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PUTC(EOF);
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FREE((HANDLE)pBuf);
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// try to shrink this block
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// just leave pInf it's original size. don't bother shrinking it
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return pInf;
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}
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/* PINF FAR PASCAL infOpen()
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* PARAMETERS
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* szInf - path to inf file to open and load
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*
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* RETURNS: A pointer to the parsed inf file if successful,
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* Null pointer in the case of failure.
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*
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* ENTER:
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* EXIT: To caller
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*/
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PINF infOpen(LPTSTR szInf)
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{
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TCHAR szBuf[MAX_PATH];
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int fh;
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PINF pinf;
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fh = -1;
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if (szInf == NULL)
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szInf = szSetupInf;
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/*
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* Next try to open passed parameter as is. For Dos half.
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*/
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if (fh == -1)
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{
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fh = HandleToUlong(CreateFile(szInf, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL));
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}
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/*
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* Next try destination path\system32. for win half.
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*/
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if (fh == -1) {
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lstrcpy(szBuf, szSetupPath);
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catpath(szBuf, TEXT("system32"));
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catpath(szBuf, szInf);
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fh = HandleToUlong(CreateFile(szBuf, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL));
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}
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/*
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* Next try destination path. for initial setup.
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*/
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if (fh == -1) {
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lstrcpy(szBuf, szSetupPath);
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catpath(szBuf, szInf);
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fh = HandleToUlong(CreateFile(szBuf, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL));
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}
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if (fh != -1)
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{
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pinf = infLoadFile(fh);
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_lclose(fh);
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if (pinf && !pinfDefault)
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pinfDefault = pinf;
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return pinf;
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}
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return NULL;
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}
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/* void FAR PASCAL infClose(PINF pinf)
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*
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* ENTER:
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* EXIT: To caller
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*/
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void infClose(PINF pinf)
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{
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if (pinf == NULL)
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pinf = pinfDefault;
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if (pinf != NULL)
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{
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FFREE(pinf);
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if (pinf == pinfDefault)
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pinfDefault = NULL;
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}
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}
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/* FindSection locates a section in Setup.Inf. Sections are
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* assumed to be delimited by a '[' as the first
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* character on a line.
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*
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* Arguments: pInf Pointer to SETUP.INF buffer
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* pszSect LPTSTR to section name
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*
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* Return: UINT file position of the first line in the section
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* 0 if section not found
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*/
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UINT_PTR FindSection(PINF pInf, LPTSTR pszSect)
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{
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BOOL fFound = FALSE;
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int nLen = lstrlen(pszSect);
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PINF pch;
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if (!pInf)
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return 0;
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pch = pInf;
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while (!fFound && *pch != EOF)
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{
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if (*pch++ == TEXT('['))
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{
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fFound = !_wcsnicmp(pszSect, pch, nLen) && pch[nLen] == TEXT(']');
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}
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/*
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* go to the next line, dont forget to skip over \0 and \0\0
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*/
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while (*pch != EOF && *pch != TEXT('\0'))
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pch++;
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while (*pch == 0)
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pch++;
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}
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return((fFound && *pch != TEXT('[') && *pch != EOF) ? pch - pInf : 0);
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}
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/* TCHAR* fnGetDataString(npszData,szDataStr)
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*
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* Called by functions that read sections of information from setup.inf
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* to obtain strings that are set equal to keywords. Example:
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*
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* welcome=("Hello There")
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*
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* This function will return a pointer to the null terminated string
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* "Hello There".
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*
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* ENTRY:
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*
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* npszData : pointer to entire section taken from setup.inf
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* npszDataStr : pointer to key word to look for (welcome in example above.)
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*
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* EXIT: returns pointer to string if successful, NULL if failure.
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*
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*/
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BOOL fnGetDataString(PINF npszData, LPTSTR szDataStr, LPTSTR szBuf)
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{
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int len = lstrlen(szDataStr);
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while (npszData)
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{
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if (!_wcsnicmp(npszData,szDataStr,len)) // looking for correct prof.
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{
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npszData += len; // found !, look past prof str.
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while (ISWHITE(*npszData)) // pull out the garbage.
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npszData++;
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if (*npszData == EQUAL) // Now we have what were looking for !
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{
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npszData++;
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if (!multifields(npszData) )
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{
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while (ISWHITE(*npszData) || ISNOISE(*npszData))
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npszData++;
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while (*npszData)
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*szBuf++ = *npszData++;
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/*
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* remove trailing spaces, and those pesky ()'s
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*/
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while (ISWHITE(szBuf[-1]) || ISNOISE(szBuf[-1]))
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szBuf--;
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*szBuf = 0;
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return TRUE;
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}
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else
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{
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while (*npszData)
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*szBuf++ = *npszData++;
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*szBuf = TEXT('\0');
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return TRUE;
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}
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}
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}
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npszData = infNextLine(npszData);
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}
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*szBuf = 0;
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return FALSE;
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}
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/* PINF FAR PASCAL infSetDefault(pinf)
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*
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* Sets the default INF file
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*
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* ENTRY:
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* pinf : inf file to be new default
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*
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* EXIT: returns old default
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*
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*/
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PINF infSetDefault(PINF pinf)
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{
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PINF pinfT;
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pinfT = pinfDefault;
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pinfDefault = pinf;
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return pinfT;
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}
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/* PINF FAR PASCAL infFindSection(pinf,szSection)
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*
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* Reads a entire section into memory and returns a pointer to it
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*
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* ENTRY:
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* pinf : inf file to search for section
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* szSection : section name to read
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*
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* EXIT: returns pointer to section, NULL if error
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*
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*/
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PINF infFindSection(PINF pinf, LPTSTR szSection)
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{
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UINT_PTR pos;
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if (pinf == NULL)
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pinf = pinfDefault;
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pos = FindSection(pinf, szSection);
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return pos ? pinf + pos : NULL;
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}
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/* BOOL FAR PASCAL infGetProfileString(szSection,szItem,szBuf)
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*
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* Reads a single string from a section in SETUP.INF
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*
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* [section]
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* item = string
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*
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* ENTRY:
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* szSection : pointer to section name to read.
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* szItem : pointer to item name to read
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* szBuf : pointer to a buffer to hold result
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*
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* EXIT: returns TRUE if successful, FALSE if failure.
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*
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*/
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BOOL infGetProfileString(PINF pinf, LPTSTR szSection,LPTSTR szItem,LPTSTR szBuf)
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{
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PINF pSection;
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pSection = infFindSection(pinf,szSection);
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if (pSection )
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return fnGetDataString(pSection,szItem,szBuf);
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else
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*szBuf = 0;
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return FALSE;
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}
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/* BOOL FAR PASCAL infParseField(szData,n,szBuf)
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*
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* Given a line from SETUP.INF, will extract the nth field from the string
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* fields are assumed separated by comma's. Leading and trailing spaces
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* are removed.
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*
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* ENTRY:
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*
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* szData : pointer to line from SETUP.INF
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* n : field to extract. ( 1 based )
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* 0 is field before a '=' sign
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* szBuf : pointer to buffer to hold extracted field
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*
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* EXIT: returns TRUE if successful, FALSE if failure.
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*
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*/
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BOOL infParseField(PINF szData, int n, LPTSTR szBuf)
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{
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BOOL fQuote = FALSE;
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PINF pch;
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LPTSTR ptr;
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if (!szData || !szBuf)
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return FALSE;
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/*
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* find the first separator
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*/
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for (pch=szData; *pch && !ISSEP(*pch); pch++) {
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if ( *pch == QUOTE )
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fQuote = !fQuote;
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}
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if (n == 0 && *pch != TEXT('='))
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return FALSE;
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if (n > 0 && *pch == TEXT('=') && !fQuote)
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szData = ++pch;
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/*
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* locate the nth comma, that is not inside of quotes
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*/
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fQuote = FALSE;
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while (n > 1)
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{
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while (*szData)
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{
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if (!fQuote && ISSEP(*szData))
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break;
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if (*szData == QUOTE)
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fQuote = !fQuote;
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szData++;
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}
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if (!*szData) {
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szBuf[0] = 0; // make szBuf empty
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return FALSE;
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}
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szData++;
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n--;
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}
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/*
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* now copy the field to szBuf
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*/
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while (ISWHITE(*szData))
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szData++;
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fQuote = FALSE;
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ptr = szBuf; // fill output buffer with this
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while (*szData)
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{
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if (*szData == QUOTE)
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fQuote = !fQuote;
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else if (!fQuote && ISSEP(*szData))
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break;
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else
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*ptr++ = *szData;
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szData++;
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}
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/*
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* remove trailing spaces, and those pesky ()'s
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*/
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while ((ptr > szBuf) && (ISWHITE(ptr[-1]) || ISNOISE(ptr[-1])))
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ptr--;
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*ptr = 0;
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return TRUE;
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}
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/* BOOL multifields(LPTSTR npszData);
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*
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* Given a line line from mmdriver.inf that was after a profile
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* string this function will determine if that line has more than one
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* field. ie. Fields are seperated by commas that are NOT contained between
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* quotes.
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*
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* ENYRY:
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*
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* npszData : a line from setup.inf Example "xyz adapter",1:foobar.drv
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*
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* EXIT: This function will return TRUE if the line containes more than
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* one field, ie the function would return TRUE for the example line
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* shown above.
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*
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*/
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BOOL multifields(PINF npszData)
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{
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BOOL fQuote = FALSE;
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while (*npszData)
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{
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if (!fQuote && ISSEP(*npszData))
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return TRUE;
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if (*npszData == QUOTE)
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fQuote = !fQuote;
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npszData++;
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}
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return FALSE;
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}
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/* LPTSTR FAR PASCAL infNextLine(sz)
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*
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* Given a line from SETUP.INF, advance to the next line. will skip past the
|
|
* ending NULL character checking for end of buffer \0\0
|
|
*
|
|
* ENTRY:
|
|
*
|
|
* sz : pointer to line from a SETUP.INF section
|
|
*
|
|
* EXIT: returns pointer to next line if successful, NULL if failure.
|
|
*
|
|
*/
|
|
PINF infNextLine(PINF pinf)
|
|
{
|
|
if (!pinf)
|
|
return NULL;
|
|
|
|
while (*pinf != 0 || *(pinf + 1) == TEXT(' '))
|
|
pinf++;
|
|
|
|
return *++pinf ? pinf : NULL;
|
|
}
|
|
|
|
/* int FAR PASCAL infLineCount(pinf)
|
|
*
|
|
* Given a section from SETUP.INF, returns the number of lines in the section
|
|
*
|
|
* ENTRY:
|
|
*
|
|
* pinf : pointer to a section from SETUP.INF
|
|
*
|
|
* EXIT: returns line count
|
|
*
|
|
*/
|
|
int infLineCount(PINF pinf)
|
|
{
|
|
int n = 0;
|
|
|
|
for (n=0; pinf; pinf = infNextLine(pinf))
|
|
n++;
|
|
|
|
return n;
|
|
}
|