%s

/*--------------------------------------------------------*/ /* page.c 08-aug-1997/bets */ /* */ /* 30-jul-1998/bets added stuff for travis' preprocessor */ /*--------------------------------------------------------*/ #include #include #include #include #include #include "page.h" #define BLKSIZE 100 /*--------------------------------------------------------*/ /* page_begin */ /*--------------------------------------------------------*/ void page_begin( char *title ) { fprintf( stdout,"Content-type: text/html\n\n" ); if ( title == NULL ) { fprintf( stdout,"\n" ); } else { fprintf( stdout, "%s\n", title ); } } /* end of page_begin() */ /*--------------------------------------------------------*/ /* page_end */ /*--------------------------------------------------------*/ void page_end() { fprintf( stdout,"\n" ); } /* end of page_end() */ /*--------------------------------------------------------*/ /* page_error */ /*--------------------------------------------------------*/ void page_error( char *fmt, ... ) { va_list args; fprintf( stdout,"Content-type: text/plain\n\n" ); va_start( args,fmt ); vfprintf( stdout,fmt,args ); va_end( args ); exit( 1 ); } /* end of page_error() */ /*--------------------------------------------------------*/ /* page_preprocessor Jul 14 98 phase */ /* */ /* 30-jul-1998/bets generalized, integrated into tools */ /* */ /* This function opens an HTML file and outputs it to */ /* stdout. When special keywords are found, denoted by */ /* KEYWORD_CHAR's on both sides of the reference, */ /* they are replaced with the actual values passed to */ /* this routine. */ /* */ /* For example, if KEYWORD_CHAR is '#', then #user# gets */ /* replaced. */ /* */ /* Note that the HTML file may have a KEYWORD_CHAR as part*/ /* of its content and not surrounding a keyword. In case */ /* this happens, if a blank is read before a second */ /* KEYWORD_CHAR, then the keyword is abandoned. */ /* */ /* Note that this routine does not start or end a page, */ /* so the calling routine should do so before and after */ /* this routine is invoked. */ /* */ /* If an error is encountered, a message is output to */ /* stdout in html

 style and the routine returns 0. */
/* If all is well, the routine returns 1.                 */
/*--------------------------------------------------------*/
int page_preprocessor(
		      char *htmlfile,
		      int   npairs,
		      PAIR *pairs
		      ) {
  char *keyword;
  int   keysize;
  FILE *in;
  int   i, state;
  unsigned int k;

  /* open html file for input */
  in = fopen( htmlfile,"r" );

  /* trap file i/o error */
  if ( in == NULL ) {
    fprintf( stdout,"PagePreprocessorException: error occurred reading file [%s] ",htmlfile );
    return( 0 );
  }
  
  /* initialize */
  if (( keyword = (char *)malloc( BLKSIZE * sizeof( char )))
      == NULL ) {
    fprintf( stdout,"PagePreprocessorException: out of memory" );
    return( 0 );
  }
  keysize = BLKSIZE;

  /* read in html file */
  state = 0;
  while (( k = fgetc( in )) != EOF ) {
    
    switch ( state ) {
    case 0:
      /* at start of reading keyword */
      if ( k == KEYWORD_CHAR ) {
	i = 0;
	state = 1;
      }
      else {
	fputc( k,stdout );
      }
      break;
    case 1:
      /* in middle of reading keyword */
      if ( k == KEYWORD_CHAR ) { /* end of keyword found */
	keyword[i] = '\0';
	/* substitute for keyword */
	fprintf( stdout,"%s",page_substitute( keyword,
					      npairs,
					      pairs ));
	/* blank out old value of keyword */
	strcpy( keyword,"" );
	i = 0;
	state = 0;
      }
      else if ( k == ' ' ) { /* blank means this isn't
				really a keyword; the 
				character was used for
				something else */
	/* output text collected so far */
	keyword[i] = '\0';
	fprintf( stdout,"%c%s ",KEYWORD_CHAR,keyword );
	/* blank out old value of keyword */
	strcpy( keyword,"" );
	i = 0;
	state = 0;
      }
      else {
	keyword[i] = (char)k;
	i++;
	if ( i >= keysize ) {
	  keysize += BLKSIZE;
	  if (( keyword = 
		(char *)realloc( keyword,
				 keysize*sizeof(char))) ==
	      NULL ) {
	    fprintf( stdout,"PagePreprocessorException: out of memory" );
	    return( 0 );
	  }
	}
      }
      break;
    }
  }
  fclose( in );

  return( 1 );

} /* end of page_preprocessor() */



/*--------------------------------------------------------*/
/* page_substitute                                        */
/* this routine returns the value to substitute for the   */
/* keyword from the argument array of keyword/value pairs.*/
/* if the keyword is not found, the routine returns the   */
/* keyword argument itself.                               */
/*--------------------------------------------------------*/
char *page_substitute( 
		      char *keyword,
		      int   npairs,
		      PAIR *pairs
		      ) {
  int i;
  for ( i=0; i