From:	"Juan Manuel Guerrero" <ST001906 AT HRZ1 DOT HRZ DOT TU-Darmstadt DOT De>
Organization:	Darmstadt University of Technology
To:	djgpp-workers AT delorie DOT com
Date:	Wed, 21 Feb 2001 23:32:19 +0200
MIME-Version:	1.0
Subject:	GNU/Borland-compatibility gettext patch for DJGPP's cvs tree
X-mailer:	Pegasus Mail for Windows (v2.54DE)
Message-ID:	<2A629D41D12@HRZ1.hrz.tu-darmstadt.de>
Reply-To:	djgpp-workers AT delorie DOT com

This is a patch for DJGPP's cvs tree.
It is needed to resolve the name conflict existing between GNU gettext()
and Borland-compatibility gettext(). To solve this conflict, Borland-
compatibility gettext() must be renamed.
In conio.[ch] I have renamed gettext to _conio_gettext.
In conio.h I have added same minor code that will check if libintl.h has
also been included. In this case, gettext from conio.h will **only** be
available as _conio_gettext. In the case that both headers, conio.h and
libintl.h, have been included by the same source file, the gettext keyword
will always make reference to GNU gettext() and Borland-compatibility
gettext() will only be available as _conio_gettext().

This has the following concequences for the user:
1) The user wants to use BORLAND-compatibility gettext from conio.h only.
   In this case the user must include conio.h in the source file and the
   gettext keyword makes *always* reference to BORLAND-compatibility gettext.
   There are no user visible changes at all.
2) The user wants to use GNU gettext from libintl.h only.
   In this case the user must include libintl.h in the source file and the
   gettext keyword makes *always* reference to GNU gettext.
   There are no user visible changes at all.
3) The user wants to use both gettext functions in the same source file.
   In this case both headers, libintl.h and conio.h, must be included in the
   source file and the keyword gettext makes **always** reference to
   GNU gettext and **never** to BORLAND-compatibility gettext.
   To use the BORLAND-compatibility gettext in this case the user must use
   the keyword: _conio_gettext instead of gettext.

Regards,
Guerrero, Juan Manuel


diff -acprNC5 djgpp.orig/include/conio.h djgpp/include/conio.h
*** djgpp.orig/include/conio.h	Wed Feb 21 12:40:52 2001
--- djgpp/include/conio.h	Wed Feb 21 22:58:34 2001
*************** enum COLORS {
*** 62,79 ****
  
  void    blinkvideo(void);
  char *  cgets(char *_str); 
  void    clreol(void);
  void    clrscr(void);
  int     _conio_kbhit(void); /* checks for ungetch char */
  int     cprintf(const char *_format, ...) __attribute__((format(printf,1,2)));
  int     cputs(const char *_str);
  int     cscanf(const char *_format, ...) __attribute__((format(scanf,1,2)));
  void    delline(void);
  int     getch(void);
  int     getche(void);
- int     gettext(int _left, int _top, int _right, int _bottom, void *_destin);
  void    gettextinfo(struct text_info *_r);
  void    gotoxy(int _x, int _y);
  void    gppconio_init(void);
  void    highvideo(void);
  void    insline(void);
--- 62,79 ----
  
  void    blinkvideo(void);
  char *  cgets(char *_str); 
  void    clreol(void);
  void    clrscr(void);
+ int     _conio_gettext(int _left, int _top, int _right, int _bottom, void *_destin);
  int     _conio_kbhit(void); /* checks for ungetch char */
  int     cprintf(const char *_format, ...) __attribute__((format(printf,1,2)));
  int     cputs(const char *_str);
  int     cscanf(const char *_format, ...) __attribute__((format(scanf,1,2)));
  void    delline(void);
  int     getch(void);
  int     getche(void);
  void    gettextinfo(struct text_info *_r);
  void    gotoxy(int _x, int _y);
  void    gppconio_init(void);
  void    highvideo(void);
  void    insline(void);
*************** void    window(int _left, int _top, int 
*** 96,105 ****
--- 96,115 ----
  
  #define kbhit _conio_kbhit /* Who ever includes gppconio.h probably
                                also wants _conio_kbhit and not kbhit
                                from libc */
  
+ /* This is to resolve the name clash between
+    gettext from conio.h and gettext from libintl.h.
+    IMPORTANT:
+    If both headers are included, gettext from libintl.h
+    takes ALWAYS precedence over gettext from conio.h. */
+ #ifndef __LIBINTL_H_INCLUDED__
+ # undef  gettext
+ # define gettext _conio_gettext
+ #endif
+ 
  #endif /* !_POSIX_SOURCE */
  #endif /* !__STRICT_ANSI__ */
  #endif /* !__dj_ENFORCE_ANSI_FREESTANDING */
  
  #ifndef __dj_ENFORCE_FUNCTION_CALLS
diff -acprNC5 djgpp.orig/src/libc/pc_hw/co80/conio.c djgpp/src/libc/pc_hw/co80/conio.c
*** djgpp.orig/src/libc/pc_hw/co80/conio.c	Wed Feb 21 12:39:04 2001
--- djgpp/src/libc/pc_hw/co80/conio.c	Wed Feb 21 23:02:24 2001
*************** puttext(int c, int r, int c2, int r2, vo
*** 88,98 ****
    }
    return 1;
  }
  
  int
! gettext(int c, int r, int c2, int r2, void *buf)
  {
    short *cbuf = (short *)buf;
    /* we should check for valid parameters, and maybe return 0 */
    r--, r2--, c--, c2--;
    for (; r <= r2; r++)
--- 88,98 ----
    }
    return 1;
  }
  
  int
! _conio_gettext(int c, int r, int c2, int r2, void *buf)
  {
    short *cbuf = (short *)buf;
    /* we should check for valid parameters, and maybe return 0 */
    r--, r2--, c--, c2--;
    for (; r <= r2; r++)
*************** cscanf(const char *fmt, ...)
*** 729,739 ****
  int
  movetext(int left, int top, int right, int bottom, int dleft, int dtop)
  {
    char    *buf = alloca((right - left + 1) * (bottom - top + 1) * 2);
    
!   gettext(left, top, right, bottom, buf);
    puttext(dleft, dtop, dleft + right - left, dtop + bottom - top, buf);
    return 1;
  }
  
  static void
--- 729,739 ----
  int
  movetext(int left, int top, int right, int bottom, int dleft, int dtop)
  {
    char    *buf = alloca((right - left + 1) * (bottom - top + 1) * 2);
    
!   _conio_gettext(left, top, right, bottom, buf);
    puttext(dleft, dtop, dleft + right - left, dtop + bottom - top, buf);
    return 1;
  }
  
  static void
diff -acprNC5 djgpp.orig/src/libc/pc_hw/co80/conio.txh djgpp/src/libc/pc_hw/co80/conio.txh
*** djgpp.orig/src/libc/pc_hw/co80/conio.txh	Wed Feb 21 12:39:24 2001
--- djgpp/src/libc/pc_hw/co80/conio.txh	Wed Feb 21 23:05:26 2001
*************** The line the cursor is on is deleted; li
*** 243,252 ****
--- 243,274 ----
  @subheading Portability
  
  @portability !ansi, !posix
  
  @c ----------------------------------------------------------------------
+ @node _conio_gettext, conio
+ @subheading Syntax
+ 
+ @example
+ #include <conio.h>
+ 
+ int     _conio_gettext(int _left, int _top, int _right, int _bottom, void *_destin);
+ @end example
+ 
+ @subheading Description
+ 
+ Retrieve a block of screen characters into a buffer.
+ 
+ @subheading Return Value
+ 
+ 1
+ 
+ @subheading Portability
+ 
+ @portability !ansi, !posix
+ 
+ @c ----------------------------------------------------------------------
  @node gettext, conio
  @subheading Syntax
  
  @example
  #include <conio.h>
*************** int     gettext(int _left, int _top, int
*** 256,265 ****
--- 278,297 ----
  @end example
  
  @subheading Description
  
  Retrieve a block of screen characters into a buffer.
+ @code{gettext} is a macro defined in @code{conio.h} that will expand
+ into @ref{_conio_gettext}. This is needed to resolve the name conflict
+ existing between the @code{gettext} function from @code{libintl.a}
+ defined in @code{libintl.h} and this one defined in @code{conio.h}.
+ If you want to use both @code{gettext} functions in the same source file
+ you must use @ref{_conio_gettext} to get the @code{gettext} function from
+ @code{conio.h}.
+ This means that if both headers are included in the same source file the
+ @code{gettext} keyword will always make reference to the @code{gettext}
+ function from @code{libintl.h}.
  
  @subheading Return Value
  
  1
  

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