//****************************************************************************// Copyright (C) 2001,2002  PEAK System-Technik GmbH//// linux@peak-system.com // www.peak-system.com//// This program is free software; you can redistribute it and/or modify// it under the terms of the GNU General Public License as published by// the Free Software Foundation; either version 2 of the License, or// (at your option) any later version.//// This program is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the// GNU General Public License for more details.//// You should have received a copy of the GNU General Public License// along with this program; if not, write to the Free Software// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.//// Maintainer(s): Klaus Hitschler (klaus.hitschler@gmx.de)//****************************************************************************//****************************************************************************//// parser.cpp - parses the input file and put the messages into a list//// $Log: parser.cpp,v $// Revision 1.3  2003/03/02 10:58:08  klaus// merged USB thread into main path//// Revision 1.2.2.1  2003/02/23 17:50:42  klaus// adapted to gcc 3.2//// Revision 1.2  2002/01/30 20:54:27  klaus// simple source file header change//// Revision 1.1  2002/01/13 18:26:42  klaus// first release//////****************************************************************************//****************************************************************************// INCLUDES#include <cstdio>#include <cstdlib>#include <cerrno>#include <string>#include <iostream>#include <fstream>#include <ctype.h>#include <libpcan.h>#include <src/parser.h>//****************************************************************************// DEFINES//****************************************************************************// GLOBALS//****************************************************************************// LOCALS//****************************************************************************// CODE //----------------------------------------------------------------------------// construct and destructparser::parser(void){  m_szFileName = NULL;  m_nLastError = 0;}parser::parser(const char *filename){  m_szFileName = filename;  m_nLastError = 0;}parser::~parser(void){}//----------------------------------------------------------------------------// skip blanks and tabsvoid parser::skip_blanks(char **ptr){  // remove blanks or tabs  while ((**ptr == ' ') || (**ptr == '\t'))     (*ptr)++; }//----------------------------------------------------------------------------// skip blanks, return 0 if the 1st non-blank char is not '\n'int parser::skip_blanks_and_test_for_CR(char **ptr){  // remove blanks or tabs  skip_blanks(ptr);    if (**ptr == '\n')    return -1;  else    return 0;}//----------------------------------------------------------------------------// extract a number, either hex or decimal from a stringint parser::scan_unsigned_number(char **ptr, __u32 *dwResult){  char *p = *ptr;    *dwResult = strtoul(p, ptr, 0);     if (p != *ptr)    return 0;      return ERANGE;}//----------------------------------------------------------------------------// extract a char from a stringchar parser::scan_char(char **ptr){  return *(*ptr)++;}  //----------------------------------------------------------------------------// parses a message commandint parser::parse_input_message(char *buffer, TPCANMsg *Message){  char *ptr = buffer;  __u32 dwLen;  __u32 dwDat;  int i;  int err = EINVAL;    // remove leading blanks  skip_blanks(&ptr);    // search for 'm' or 'r' to distinguish between message or remote transmit requests  Message->MSGTYPE  = 0;   switch (scan_char(&ptr))  {    case 'm':  break; // normal message    case 'r':  Message->MSGTYPE |= MSGTYPE_RTR; break; // rtr message    default:   goto reject;  }  if (skip_blanks_and_test_for_CR(&ptr)) // no CR allowed here    goto reject;     // read message type  switch (scan_char(&ptr))  {    case 's': break;    case 'e': Message->MSGTYPE |= MSGTYPE_EXTENDED; break;        default:  goto reject;  }  if (skip_blanks_and_test_for_CR(&ptr))    goto reject;    // read CAN-ID  if ((err = scan_unsigned_number(&ptr, &Message->ID)))    goto reject;  if (Message->MSGTYPE & MSGTYPE_EXTENDED)  {    if (Message->ID > 0x3fffffff)      goto reject;  }  else  {    if (Message->ID > 2047)      goto reject;  }  if (skip_blanks_and_test_for_CR(&ptr))    goto reject;    //read datalength  if ((err = scan_unsigned_number(&ptr, &dwLen)))    goto reject;  if (dwLen > 8)    goto reject;    Message->LEN = (__u8)dwLen;        // read data elements up to message len  i = 0;  while (i < dwLen)  {    if (skip_blanks_and_test_for_CR(&ptr))    goto reject;        if ((err = scan_unsigned_number(&ptr, &dwDat)))      goto reject;    if (dwDat > 255)      goto reject;    	  Message->DATA[i] = (__u8)dwDat;    	  	  i++;   }     return 0;     reject:  return err;}//----------------------------------------------------------------------------// returns the last errorint parser::nGetLastError(void){  int error = m_nLastError;    m_nLastError = 0;  return error;}//----------------------------------------------------------------------------// set the filenamevoid parser::setFileName(const char *filename){  m_szFileName = filename;}  //----------------------------------------------------------------------------// returns the list of messagesstd::list<TPCANMsg> *parser::Messages(void){  std::list<TPCANMsg> *_local = &m_List;  std::string    str;    std::ifstream  input(m_szFileName);  TPCANMsg       Message;   if (!input)  {    m_nLastError = errno;    return NULL;  }        while (!input.eof() && !input.fail())  {    getline(input, str);        if (!parse_input_message(const_cast<char *>(str.c_str()), &Message))      m_List.push_back(Message);  }    if (!input.eof() && input.fail())  {    m_nLastError = errno;    _local = NULL;  }    input.close();    	#if 0 //------------- print out message, begin ----------------  {    list<TPCANMsg>::iterator iter;    int i;        for (iter = m_List.begin(); iter != m_List.end(); iter++)    {         i = 0;        	    printf("%s: 0x%08x 0x%02x %d . ",	      "transmitest", iter->ID, iter->MSGTYPE, iter->LEN);	    	    while (i++ < iter->LEN)	      printf("0x%02x ", iter->DATA[i]);	    		  printf("\n");  		}  }	#endif //------------- print out message, end -----------------             return _local; }