libguile/strings.h

   1 /* classes: h_files */
   2
   3 #ifndef STRINGSH
   4 #define STRINGSH
   5 /*      Copyright (C) 1995,1996,1997,1998, 2000 Free Software Foundation, Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2, or (at your option)
  10  * any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this software; see the file COPYING.  If not, write to
  19  * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20  * Boston, MA 02111-1307 USA
  21  *
  22  * As a special exception, the Free Software Foundation gives permission
  23  * for additional uses of the text contained in its release of GUILE.
  24  *
  25  * The exception is that, if you link the GUILE library with other files
  26  * to produce an executable, this does not by itself cause the
  27  * resulting executable to be covered by the GNU General Public License.
  28  * Your use of that executable is in no way restricted on account of
  29  * linking the GUILE library code into it.
  30  *
  31  * This exception does not however invalidate any other reasons why
  32  * the executable file might be covered by the GNU General Public License.
  33  *
  34  * This exception applies only to the code released by the
  35  * Free Software Foundation under the name GUILE.  If you copy
  36  * code from other Free Software Foundation releases into a copy of
  37  * GUILE, as the General Public License permits, the exception does
  38  * not apply to the code that you add in this way.  To avoid misleading
  39  * anyone as to the status of such modified files, you must delete
  40  * this exception notice from them.
  41  *
  42  * If you write modifications of your own for GUILE, it is your choice
  43  * whether to permit this exception to apply to your modifications.
  44  * If you do not wish that, delete this exception notice.  */
  45
  46 /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
  47    gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
  48 \f
  49
  50 #include "libguile/__scm.h"
  51
  52 \f
  53
  54 #define SCM_STRINGP(x) (SCM_NIMP (x) && (SCM_TYP7S (x) == scm_tc7_string))
  55 #if (SCM_DEBUG_DEPRECATED == 1)
  56 #define SCM_STRING_UCHARS(x) ((unsigned char *) (SCM_CELL_WORD_1 (x)))
  57 #define SCM_STRING_CHARS(x) ((char *) (SCM_CELL_WORD_1 (x)))
  58 #endif
  59 #define SCM_SET_STRING_CHARS(s, c) (SCM_SET_CELL_WORD_1 ((s), (c)))
  60 #define SCM_STRING_MAX_LENGTH ((1L << 24) - 1)
  61 #define SCM_STRING_LENGTH(x) (((unsigned long) SCM_CELL_WORD_0 (x)) >> 8)
  62 #define SCM_SET_STRING_LENGTH(s, l) (SCM_SET_CELL_WORD_0 ((s), ((l) << 8) + scm_tc7_string))
  63
  64 #define SCM_STRING_COERCE_0TERMINATION_X(x) \
  65   { if (SCM_NIMP (x) && (SCM_TYP7 (x) == scm_tc7_substring)) \
  66       x = scm_makfromstr (SCM_STRING_CHARS (x), SCM_STRING_LENGTH (x), 0); }
  67
  68 \f
  69
  70 extern SCM scm_string_p (SCM x);
  71 extern SCM scm_read_only_string_p (SCM x);
  72 extern SCM scm_string (SCM chrs);
  73 extern SCM scm_makstr (long len, int);
  74 extern SCM scm_makfromstrs (int argc, char **argv);
  75 extern SCM scm_take_str (char *s, int len);
  76 extern SCM scm_take0str (char *s);
  77 extern SCM scm_makfromstr (const char *src, scm_sizet len, int);
  78 extern SCM scm_makfrom0str (const char *src);
  79 extern SCM scm_makfrom0str_opt (const char *src);
  80 extern SCM scm_make_string (SCM k, SCM chr);
  81 extern SCM scm_string_length (SCM str);
  82 extern SCM scm_string_ref (SCM str, SCM k);
  83 extern SCM scm_string_set_x (SCM str, SCM k, SCM chr);
  84 extern SCM scm_substring (SCM str, SCM start, SCM end);
  85 extern SCM scm_string_append (SCM args);
  86 extern void scm_init_strings (void);
  87
  88 \f
  89
  90 #if (SCM_DEBUG_DEPRECATED == 0)
  91
  92 #define SCM_SLOPPY_STRINGP(x) (SCM_STRINGP(x))
  93 #define SCM_NSTRINGP(x) (!SCM_STRINGP(x))
  94 #define SCM_RWSTRINGP(x) (SCM_NIMP (x) && (SCM_TYP7 (x) == scm_tc7_string))
  95 #define SCM_NRWSTRINGP(x) (! SCM_RWSTRINGP (x))
  96 #define SCM_STRING_UCHARS(x) \
  97   ((SCM_TYP7 (x) == scm_tc7_substring) \
  98      ? (unsigned char *) SCM_CELL_WORD_1 (SCM_CDDR (x)) + SCM_INUM (SCM_CADR (x)) \
  99      : (unsigned char *) SCM_CELL_WORD_1 (x))
 100 #define SCM_STRING_CHARS(x) \
 101   ((SCM_TYP7 (x) == scm_tc7_substring) \
 102      ? (char *) SCM_CELL_WORD_1 (SCM_CDDR (x)) + SCM_INUM (SCM_CADR (x)) \
 103      : (char *) SCM_CELL_WORD_1 (x))
 104 extern SCM scm_make_shared_substring (SCM str, SCM frm, SCM to);
 105
 106 #endif  /* SCM_DEBUG_DEPRECATED == 0 */
 107
 108 #endif  /* STRINGSH */
 109
 110 /*
 111   Local Variables:
 112   c-file-style: "gnu"
 113   End:
 114 */