14552ab56f
* contrib/hbide/ideparseexpr.c
! Fixed to not contain non-ANSI comments.
% Minor optimizations.
! Fixed linearfind() to return incorrect result when called in
case insensitive mode. (not exploited by current code)
% Marked worker functions as static.
+ Using Harbour types HB_BOOL and HB_SIZE. (type usage is still inconsistent)
% Elminiated HB_ISBYREF() call. Not needed.
! Fixed to use hb_strncat() instead of strcat().
! Fixed unsafe '!' oparator usage. (MSVC C++ warning)
; TOFIX: There is still one unsafe strncpy() usage, but I can't fix it.
Anyone?
350 lines
10 KiB
C
350 lines
10 KiB
C
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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*
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* Copyright 2009 Andy Wos
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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/*----------------------------------------------------------------------*/
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/*----------------------------------------------------------------------*/
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/*----------------------------------------------------------------------*/
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/*
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* EkOnkar
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* ( The LORD is ONE )
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*
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* Harbour-Qt IDE
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*
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* Code Forwarded by Andy Wos
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*
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* Pritpal Bedi <pritpal@vouchcac.com>
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* 22Nov2009
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*/
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/*----------------------------------------------------------------------*/
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/*----------------------------------------------------------------------*/
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/*----------------------------------------------------------------------*/
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#include "hbapi.h"
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#include "hbapiitm.h"
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/*----------------------------------------------------------------------*/
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#define MAX_LINE_LEN 2047
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static const char s_good[] = "''_ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890.";
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static const char * s_adouble[] = { "*/", "/*", "//", "->", "::", "||", "++", "--", "**", ":=",
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"<=", ">=", "<>", "!=", "==", "+=", "-=", "*=", "/=", "%=",
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"^=", "&&", "^^", ">>", "<<", "=>", "&=", "|=" };
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static int s_lengood = HB_SIZEOFARRAY( s_good ) - 1;
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static int s_lendouble = HB_SIZEOFARRAY( s_adouble );
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/*----------------------------------------------------------------------*/
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static HB_SIZE linearfind( const char** array, const char* cText, HB_SIZE lenarray, HB_SIZE lentext, HB_BOOL bMatchCase )
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{
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HB_SIZE i;
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if( bMatchCase )
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{
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for( i = 0; i < lenarray; i++ )
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{
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if( strncmp( cText, array[ i ], lentext + 1 ) == 0 )
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return i + 1;
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}
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}
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else
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{
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for( i = 0; i < lenarray; i++ )
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{
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if( hb_strnicmp( cText, array[ i ], lentext + 1 ) == 0 )
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return i + 1;
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}
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}
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return 0;
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}
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/*----------------------------------------------------------------------*/
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static HB_BOOL strempty( const char * string )
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{
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HB_SIZE i = 0;
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while( string[ i ] != 0 )
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{
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if( string[ i++ ] != ' ' )
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return HB_FALSE;
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}
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return HB_TRUE;
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}
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/*----------------------------------------------------------------------*/
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static HB_SIZE atbuff( const char * chars, const char * string, HB_SIZE StartFrom, HB_SIZE Target, HB_SIZE len_chars, HB_SIZE len )
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{
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if( len >= len_chars && StartFrom <= len - len_chars )
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{
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HB_SIZE x;
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HB_SIZE Counter = 0;
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for( x = StartFrom; x <= ( len - len_chars ); x++ )
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{
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if( strncmp( string + x, chars, len_chars ) == 0 )
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{
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if( ++Counter == Target )
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return x + 1;
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}
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}
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}
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return 0;
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}
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/*----------------------------------------------------------------------*/
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static int _GetWord( const char * cText, HB_BOOL lHonorSpacing, char * cWord, int * pnpos )
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{
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int maxlen = strlen( cText );
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int npos = 0;
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int wordlen = 0;
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if( maxlen > 0 )
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{
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char temp;
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char ch;
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char csingle[ 2 ];
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char cdouble[ 3 ];
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csingle[ 1 ] = 0;
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cdouble[ 2 ] = 0;
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ch = cText[ 0 ];
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if( ch == ',' ) /* lists */
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{
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cWord[ wordlen++ ] = ch;
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npos++;
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}
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else /* literals */
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{
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if( ch == '"' || ch == '\'' )
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{
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temp = ch;
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cWord[ wordlen++ ] = ch;
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npos++;
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ch = ' ';
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while( ( npos < maxlen ) && ( ch != temp ) )
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{
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ch = cText[ npos ];
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cWord[ wordlen++ ] = ch;
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npos ++;
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}
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}
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else
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{
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csingle[0] = ch;
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if( atbuff( csingle, s_good, 0, 1, 1, s_lengood ) ) /* ch $ s_good ) // variables, commands, function names */
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{
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while( ( npos < maxlen ) && atbuff( csingle, s_good, 0, 1, 1, s_lengood ) )
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{
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cWord[ wordlen++ ] = ch;
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npos++;
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ch = cText[ npos ];
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csingle[ 0 ] = ch;
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}
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}
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else if( ch == ' ' )
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{
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while( ( npos < maxlen ) && ch == ' ' )
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{
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cWord[ wordlen++ ] = ch;
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npos ++;
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ch = cText[ npos ];
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}
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if( !lHonorSpacing )
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{
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cWord[ 0 ] = ' '; /* reduce spaces to 1 */
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wordlen = 1;
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}
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}
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else /* operators, punctuation */
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{
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cWord[ wordlen++ ]= ch;
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npos ++;
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ch = cText[ npos ];
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if( maxlen > npos )
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{
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cdouble[ 0 ] = cWord[ 0 ];
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cdouble[ 1 ] = ch;
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if( linearfind( s_adouble, cdouble, s_lendouble, 2, HB_TRUE ) ) /* if( (cWord + ch) $ s_adouble) //aScan( s_adouble, cWord + ch ) > 0 */
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{
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cWord[ wordlen++ ] = ch;
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npos ++;
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}
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}
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}
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}
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}
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}
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cWord[ wordlen ] = 0;
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*pnpos = npos;
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return wordlen;
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}
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/*----------------------------------------------------------------------*/
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/*
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* ( c, lHonorSpacing, lInRemark, lUpperKeyWord, lKeepComments, lPRG, lKeepSpaces )
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*/
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HB_FUNC( PARSEXPR )
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{
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const char * c = hb_parcx( 1 );
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HB_BOOL lHonorSpacing = hb_parl( 2 );
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HB_BOOL lInRemark = HB_ISLOG( 3 ) ? hb_parl( 3 ) : HB_FALSE;
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HB_BOOL lKeepComments = HB_ISLOG( 5 ) ? hb_parl( 5 ) : HB_TRUE;
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HB_BOOL bPRG = HB_ISLOG( 6 ) ? hb_parl( 6 ) : HB_TRUE;
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HB_BOOL lKeepSpaces = HB_ISLOG( 7 ) ? hb_parl( 7 ) : HB_TRUE;
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PHB_ITEM aExpr = hb_itemArrayNew( 0 );
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PHB_ITEM element = hb_itemNew( NULL );
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HB_BOOL lFirst = HB_TRUE;
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int lenprocessed = 0;
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int lenwords = 0;
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int wordlen;
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int npos;
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char NextWord[ MAX_LINE_LEN + 1 ];
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NextWord[ 0 ] = 0;
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while( ( wordlen = _GetWord( c, lHonorSpacing, NextWord, &lenprocessed ) ) != 0 )
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{
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c += lenprocessed;
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if( strncmp( NextWord, "*/", 3 ) == 0 ) /* remark end */
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{
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if( lKeepComments )
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{
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lenwords++;
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hb_arrayAdd( aExpr, hb_itemPutC( element, NextWord ) );
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}
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lInRemark = HB_FALSE;
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}
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else if( ( strncmp( NextWord, "/*", 3 ) == 0 ) || lInRemark ) /* remark start */
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{
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lInRemark = ( ( npos = atbuff( "*/", c, 0, 1, 2, strlen( c ) ) ) == 0 );
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if( lInRemark )
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{
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if( lKeepComments )
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{
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hb_strncat( NextWord, c, sizeof( NextWord ) - 1 );
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lenwords++;
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hb_arrayAdd( aExpr, hb_itemPutC( element, NextWord ) );
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}
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break;
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}
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else
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{
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if( lKeepComments )
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{
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strncpy( NextWord + wordlen, c, npos + 1 );
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NextWord[ wordlen + npos + 1 ] = 0;
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lenwords++;
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hb_arrayAdd( aExpr, hb_itemPutC( element, NextWord ) );
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}
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c += ( npos + 1 );
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}
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}
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else if( strncmp( NextWord, "//", 3 ) == 0 || ( bPRG && strncmp( NextWord, "&&", 3 ) == 0 ) ) /* inline remark */
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{
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if( lKeepComments )
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{
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hb_strncat( NextWord, c, sizeof( NextWord ) - 1 );
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lenwords++;
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hb_arrayAdd( aExpr, hb_itemPutC( element, NextWord ) );
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}
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break;
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}
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else if( strncmp( NextWord, "**", 3 ) == 0 && lFirst && bPRG )
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{
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if( lKeepComments )
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{
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hb_strncat( NextWord, c, sizeof( NextWord ) - 1 );
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lenwords++;
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hb_arrayAdd( aExpr, hb_itemPutC( element, NextWord ) );
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}
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break;
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}
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else
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{
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if( lKeepSpaces || ! strempty( NextWord ) )
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{
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lenwords++;
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hb_arrayAdd( aExpr, hb_itemPutC( element, NextWord ) );
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}
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}
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if( ! strempty( NextWord ) )
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lFirst = HB_FALSE;
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}
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if( ! lKeepComments && !( lenwords > 0 ) && hb_arrayGetCPtr( aExpr, lenwords ) )
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hb_arraySize( aExpr, lenwords );
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hb_storl( lInRemark, 3 );
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hb_itemRelease( element );
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hb_itemReturnRelease( aExpr );
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}
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/*----------------------------------------------------------------------*/
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