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7866a09b5b
added append docs from R4RS. * strings.c: Docstring typo fix, + eliminate unneeded IMP tests. Thanks Dirk Hermann! * chars.h: Provide SCM_CHARP, SCM_CHAR, SCM_MAKE_CHAR and deprecate SCM_ICHRP, SCM_ICHR, SCM_MAKICHR. Thanks Dirk Hermann! * *.h, *.c: Use SCM_CHARP, SCM_CHAR, SCM_MAKE_CHAR throughout. Drop use of SCM_P for function prototypes... assume an ANSI C compiler. Thanks Dirk Hermann!
402 lines
12 KiB
C
402 lines
12 KiB
C
/* Copyright (C) 1995,1996,1998 Free Software Foundation, Inc.
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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
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* 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 GUILE 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
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, 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 GUILE, 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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/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
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gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
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#include <stdio.h>
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#include <ctype.h>
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#include "_scm.h"
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#include "scm_validate.h"
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#include "chars.h"
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SCM_DEFINE (scm_char_p, "char?", 1, 0, 0,
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(SCM x),
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"Return #t iff X is a character, else #f.")
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#define FUNC_NAME s_scm_char_p
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{
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return SCM_BOOL(SCM_CHARP(x));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_eq_p, "char=?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is the same character as Y, else #f.")
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#define FUNC_NAME s_scm_char_eq_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(SCM_CHAR(x) == SCM_CHAR(y));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_less_p, "char<?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is less than Y in the Ascii sequence, else #f.")
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#define FUNC_NAME s_scm_char_less_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(SCM_CHAR(x) < SCM_CHAR(y));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_leq_p, "char<=?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is less than or equal to Y in the Ascii sequence, else #f.")
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#define FUNC_NAME s_scm_char_leq_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(SCM_CHAR(x) <= SCM_CHAR(y));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_gr_p, "char>?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is greater than Y in the Ascii sequence, else #f.")
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#define FUNC_NAME s_scm_char_gr_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(SCM_CHAR(x) > SCM_CHAR(y));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_geq_p, "char>=?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is greater than or equal to Y in the Ascii sequence, else #f.")
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#define FUNC_NAME s_scm_char_geq_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(SCM_CHAR(x) >= SCM_CHAR(y));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_ci_eq_p, "char-ci=?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is the same character as Y ignoring case, else #f.")
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#define FUNC_NAME s_scm_char_ci_eq_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(scm_upcase(SCM_CHAR(x))==scm_upcase(SCM_CHAR(y)));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_ci_less_p, "char-ci<?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is less than Y in the Ascii sequence ignoring case, else #f.")
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#define FUNC_NAME s_scm_char_ci_less_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL((scm_upcase(SCM_CHAR(x))) < scm_upcase(SCM_CHAR(y)));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_ci_leq_p, "char-ci<=?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is less than or equal to Y in the Ascii sequence ignoring case, else #f.")
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#define FUNC_NAME s_scm_char_ci_leq_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(scm_upcase(SCM_CHAR(x)) <= scm_upcase(SCM_CHAR(y)));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_ci_gr_p, "char-ci>?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is greater than Y in the Ascii sequence ignoring case, else #f.")
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#define FUNC_NAME s_scm_char_ci_gr_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(scm_upcase(SCM_CHAR(x)) > scm_upcase(SCM_CHAR(y)));
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}
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#undef FUNC_NAME
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SCM_DEFINE1 (scm_char_ci_geq_p, "char-ci>=?", scm_tc7_rpsubr,
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(SCM x, SCM y),
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"Return #t iff X is greater than or equal to Y in the Ascii sequence ignoring case, else #f.")
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#define FUNC_NAME s_scm_char_ci_geq_p
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{
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SCM_VALIDATE_CHAR (1,x);
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SCM_VALIDATE_CHAR (2,y);
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return SCM_BOOL(scm_upcase(SCM_CHAR(x)) >= scm_upcase(SCM_CHAR(y)));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_alphabetic_p, "char-alphabetic?", 1, 0, 0,
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(SCM chr),
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"Return #t iff CHR is alphabetic, else #f.\n"
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"Alphabetic means the same thing as the isalpha C library function.")
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#define FUNC_NAME s_scm_char_alphabetic_p
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{
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SCM_VALIDATE_CHAR (1,chr);
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return SCM_BOOL(isascii(SCM_CHAR(chr)) && isalpha(SCM_CHAR(chr)));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_numeric_p, "char-numeric?", 1, 0, 0,
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(SCM chr),
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"Return #t iff CHR is numeric, else #f.\n"
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"Numeric means the same thing as the isdigit C library function.")
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#define FUNC_NAME s_scm_char_numeric_p
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{
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SCM_VALIDATE_CHAR (1,chr);
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return SCM_BOOL(isascii(SCM_CHAR(chr)) && isdigit(SCM_CHAR(chr)));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_whitespace_p, "char-whitespace?", 1, 0, 0,
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(SCM chr),
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"Return #t iff CHR is whitespace, else #f.\n"
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"Whitespace means the same thing as the isspace C library function.")
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#define FUNC_NAME s_scm_char_whitespace_p
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{
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SCM_VALIDATE_CHAR (1,chr);
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return SCM_BOOL(isascii(SCM_CHAR(chr)) && isspace(SCM_CHAR(chr)));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_upper_case_p, "char-upper-case?", 1, 0, 0,
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(SCM chr),
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"Return #t iff CHR is uppercase, else #f.\n"
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"Uppercase means the same thing as the isupper C library function.")
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#define FUNC_NAME s_scm_char_upper_case_p
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{
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SCM_VALIDATE_CHAR (1,chr);
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return SCM_BOOL(isascii(SCM_CHAR(chr)) && isupper(SCM_CHAR(chr)));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_lower_case_p, "char-lower-case?", 1, 0, 0,
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(SCM chr),
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"Return #t iff CHR is lowercase, else #f.\n"
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"Lowercase means the same thing as the islower C library function.")
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#define FUNC_NAME s_scm_char_lower_case_p
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{
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SCM_VALIDATE_CHAR (1,chr);
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return SCM_BOOL(isascii(SCM_CHAR(chr)) && islower(SCM_CHAR(chr)));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_is_both_p, "char-is-both?", 1, 0, 0,
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(SCM chr),
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"Return #t iff CHR is either uppercase or lowercase, else #f.\n"
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"Uppercase and lowercase are as defined by the isupper and islower\n"
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"C library functions.")
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#define FUNC_NAME s_scm_char_is_both_p
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{
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SCM_VALIDATE_CHAR (1,chr);
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return SCM_BOOL(isascii(SCM_CHAR(chr)) && (isupper(SCM_CHAR(chr)) || islower(SCM_CHAR(chr))));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_to_integer, "char->integer", 1, 0, 0,
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(SCM chr),
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"Return the number corresponding to ordinal position of CHR in the Ascii sequence.")
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#define FUNC_NAME s_scm_char_to_integer
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{
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SCM_VALIDATE_CHAR (1,chr);
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return scm_ulong2num((unsigned long)SCM_CHAR(chr));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_integer_to_char, "integer->char", 1, 0, 0,
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(SCM n),
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"Return the character at position N in the Ascii sequence.")
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#define FUNC_NAME s_scm_integer_to_char
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{
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SCM_VALIDATE_INUM_RANGE (1, n, 0, 256);
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return SCM_MAKE_CHAR (SCM_INUM (n));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_upcase, "char-upcase", 1, 0, 0,
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(SCM chr),
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"Return the uppercase character version of CHR.")
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#define FUNC_NAME s_scm_char_upcase
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{
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SCM_VALIDATE_CHAR (1,chr);
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return SCM_MAKE_CHAR(scm_upcase(SCM_CHAR(chr)));
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_char_downcase, "char-downcase", 1, 0, 0,
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(SCM chr),
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"Return the lowercase character version of CHR.")
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#define FUNC_NAME s_scm_char_downcase
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{
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SCM_VALIDATE_CHAR (1,chr);
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return SCM_MAKE_CHAR(scm_downcase(SCM_CHAR(chr)));
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}
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#undef FUNC_NAME
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static unsigned char scm_upcase_table[SCM_CHAR_CODE_LIMIT];
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static unsigned char scm_downcase_table[SCM_CHAR_CODE_LIMIT];
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static const unsigned char scm_lowers[] = "abcdefghijklmnopqrstuvwxyz";
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static const unsigned char scm_uppers[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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void
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scm_tables_prehistory ()
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{
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int i;
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for (i = 0; i < SCM_CHAR_CODE_LIMIT; i++)
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scm_upcase_table[i] = scm_downcase_table[i] = i;
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for (i = 0; i < (int) (sizeof scm_lowers / sizeof (scm_lowers[0])); i++)
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{
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scm_upcase_table[scm_lowers[i]] = scm_uppers[i];
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scm_downcase_table[scm_uppers[i]] = scm_lowers[i];
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}
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}
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int
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scm_upcase (unsigned int c)
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{
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if (c < sizeof (scm_upcase_table))
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return scm_upcase_table[c];
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else
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return c;
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}
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int
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scm_downcase (unsigned int c)
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{
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if (c < sizeof (scm_downcase_table))
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return scm_downcase_table[c];
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else
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return c;
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}
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#ifdef _DCC
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# define ASCII
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#else
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# if (('\n'=='\025') && (' '=='\100') && ('a'=='\201') && ('A'=='\301'))
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# define EBCDIC
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# endif /* (('\n'=='\025') && (' '=='\100') && ('a'=='\201') && ('A'=='\301')) */
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# if (('\n'=='\012') && (' '=='\040') && ('a'=='\141') && ('A'=='\101'))
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# define ASCII
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# endif /* (('\n'=='\012') && (' '=='\040') && ('a'=='\141') && ('A'=='\101')) */
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#endif /* def _DCC */
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#ifdef EBCDIC
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char *const scm_charnames[] =
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{
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"nul","soh","stx","etx", "pf", "ht", "lc","del",
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0 , 0 ,"smm", "vt", "ff", "cr", "so", "si",
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"dle","dc1","dc2","dc3","res", "nl", "bs", "il",
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"can", "em", "cc", 0 ,"ifs","igs","irs","ius",
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"ds","sos", "fs", 0 ,"byp", "lf","eob","pre",
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0 , 0 , "sm", 0 , 0 ,"enq","ack","bel",
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0 , 0 ,"syn", 0 , "pn", "rs", "uc","eot",
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0 , 0 , 0 , 0 ,"dc4","nak", 0 ,"sub",
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"space", scm_s_newline, "tab", "backspace", "return", "page", "null"};
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const char scm_charnums[] =
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"\000\001\002\003\004\005\006\007\
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\010\011\012\013\014\015\016\017\
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\020\021\022\023\024\025\026\027\
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\030\031\032\033\034\035\036\037\
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\040\041\042\043\044\045\046\047\
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\050\051\052\053\054\055\056\057\
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\060\061\062\063\064\065\066\067\
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\070\071\072\073\074\075\076\077\
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\n\t\b\r\f\0";
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#endif /* def EBCDIC */
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#ifdef ASCII
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char *const scm_charnames[] =
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{
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"nul","soh","stx","etx","eot","enq","ack","bel",
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"bs", "ht", "newline", "vt", "np", "cr", "so", "si",
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"dle","dc1","dc2","dc3","dc4","nak","syn","etb",
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"can", "em","sub","esc", "fs", "gs", "rs", "us",
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"space", "nl", "tab", "backspace", "return", "page", "null", "del"};
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const char scm_charnums[] =
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"\000\001\002\003\004\005\006\007\
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\010\011\012\013\014\015\016\017\
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\020\021\022\023\024\025\026\027\
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\030\031\032\033\034\035\036\037\
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\n\t\b\r\f\0\177";
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#endif /* def ASCII */
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int scm_n_charnames = sizeof (scm_charnames) / sizeof (char *);
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void
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scm_init_chars ()
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{
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#include "chars.x"
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}
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