[bpt/guile.git] / libguile / print.c

/*	Copyright (C) 1995,1996 Free Software Foundation, Inc.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this software; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * As a special exception, the Free Software Foundation gives permission
 * for additional uses of the text contained in its release of GUILE.
 *
 * The exception is that, if you link the GUILE library with other files
 * to produce an executable, this does not by itself cause the
 * resulting executable to be covered by the GNU General Public License.
 * Your use of that executable is in no way restricted on account of
 * linking the GUILE library code into it.
 *
 * This exception does not however invalidate any other reasons why
 * the executable file might be covered by the GNU General Public License.
 *
 * This exception applies only to the code released by the
 * Free Software Foundation under the name GUILE.  If you copy
 * code from other Free Software Foundation releases into a copy of
 * GUILE, as the General Public License permits, the exception does
 * not apply to the code that you add in this way.  To avoid misleading
 * anyone as to the status of such modified files, you must delete
 * this exception notice from them.
 *
 * If you write modifications of your own for GUILE, it is your choice
 * whether to permit this exception to apply to your modifications.
 * If you do not wish that, delete this exception notice.  
 */
\f

#include <stdio.h>
#include "_scm.h"

\f

\f

/* {Names of immediate symbols}
 * 
 * This table must agree with the declarations in scm.h: {Immediate Symbols}.
 */

char *scm_isymnames[] =
{
  /* This table must agree with the declarations */
  "#@and",
  "#@begin",
  "#@case",
  "#@cond",
  "#@do",
  "#@if",
  "#@lambda",
  "#@let",
  "#@let*",
  "#@letrec",
  "#@or",
  "#@quote",
  "#@set!",
  "#@define",
#if 0
  "#@literal-variable-ref",
  "#@literal-variable-set!",
#endif
  "#@apply",
  "#@call-with-current-continuation",

 /* user visible ISYMS */
 /* other keywords */
 /* Flags */

  "#f",
  "#t",
  "#<undefined>",
  "#<eof>",
  "()",
  "#<unspecified>"
};

#ifdef DEBUG_EXTENSIONS
scm_option scm_print_opts[] = {
  { SCM_OPTION_BOOLEAN, "procnames", 0,
    "Print names instead of closures." },
  { SCM_OPTION_SCM, "closure-hook", SCM_BOOL_F,
    "Procedure used to print closures." }
};

SCM_PROC (s_print_options, "print-options-interface", 0, 1, 0, scm_print_options);
#ifdef __STDC__
SCM
scm_print_options (SCM new_values)
#else
SCM
scm_print_options (new_values)
     SCM new_values;
#endif
{
  SCM ans = scm_options (new_values,
			 scm_print_opts,
			 SCM_N_PRINT_OPTIONS,
			 s_print_options);
  return ans;
}
#endif

\f
/* {Printing of Scheme Objects}
 */

/* Print generally.  Handles both write and display according to WRITING.
 */
#ifdef __STDC__
void 
scm_iprin1 (SCM exp, SCM port, int writing)
#else
void 
scm_iprin1 (exp, port, writing)
     SCM exp;
     SCM port;
     int writing;
#endif
{
  register long i;
taloop:
  switch (7 & (int) exp)
    {
    case 2:
    case 6:
      scm_intprint (SCM_INUM (exp), 10, port);
      break;
    case 4:
      if (SCM_ICHRP (exp))
	{
	  i = SCM_ICHR (exp);
	  scm_put_wchar (i, port, writing);

	}
      else if (   SCM_IFLAGP (exp)
	       && (SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *))))
	  scm_gen_puts (scm_regular_string, SCM_ISYMSCM_CHARS (exp), port);
      else if (SCM_ILOCP (exp))
	{
	  scm_gen_puts (scm_regular_string, "#@", port);
	  scm_intprint ((long) SCM_IFRAME (exp), 10, port);
	  scm_gen_putc (SCM_ICDRP (exp) ? '-' : '+', port);
	  scm_intprint ((long) SCM_IDIST (exp), 10, port);
	}
      else
	goto idef;
      break;
    case 1:
      /* gloc */
      scm_gen_puts (scm_regular_string, "#@", port);
      exp = SCM_CAR (exp - 1);
      goto taloop;
    default:
    idef:
      scm_ipruk ("immediate", exp, port);
      break;
    case 0:
      switch (SCM_TYP7 (exp))
	{
	case scm_tcs_cons_gloc:

	  if (SCM_CDR (SCM_CAR (exp) - 1L) == 0)
	    {
	      scm_gen_write (scm_regular_string, "#<struct ", (scm_sizet) 9, port);
	      scm_intprint(exp, 16, port);
	      scm_gen_putc ('>', port);
	      break;
	    }

	case scm_tcs_cons_imcar:
	case scm_tcs_cons_nimcar:
	  scm_iprlist ("(", exp, ')', port, writing);
	  break;
	case scm_tcs_closures:
#ifdef DEBUG_EXTENSIONS
	  if (SCM_PRINT_PROCNAMES_P)
	    {
	      SCM name;
	      name = scm_procedure_property (exp, scm_i_name);
	      scm_gen_puts (scm_regular_string, "#<procedure", port);
	      if (SCM_NFALSEP (name))
		{
		  scm_gen_putc (' ', port);
		  /* FIXME */
		  scm_gen_puts (scm_regular_string, SCM_CHARS (name), port);
		}
	      scm_gen_putc ('>', port);
	    }
	  else
#endif
	    {
	      exp = SCM_CODE (exp);
	      scm_iprlist ("#<CLOSURE ", exp, '>', port, writing);
	    }
	  break;
	case scm_tc7_mb_string:
	case scm_tc7_mb_substring:
	  scm_print_mb_string (exp, port, writing);
	  break;
	case scm_tc7_substring:
	case scm_tc7_string:
	  if (writing)
	    {
	      scm_gen_putc ('\"', port);
	      for (i = 0; i < SCM_ROLENGTH (exp); ++i)
		switch (SCM_ROCHARS (exp)[i])
		  {
		  case '\"':
		  case '\\':
		    scm_gen_putc ('\\', port);
		  default:
		    scm_gen_putc (SCM_ROCHARS (exp)[i], port);
		  }
	      scm_gen_putc ('\"', port);
	      break;
	    }
	  else
	    scm_gen_write (scm_regular_string, SCM_ROCHARS (exp),
			   (scm_sizet) SCM_ROLENGTH (exp),
			   port);
	  break;
	case scm_tcs_symbols:
	  if (SCM_MB_STRINGP (exp))
	    {
	      scm_print_mb_symbol (exp, port);
	      break;
	    }
	  else
	    {
	      int pos;
	      int end;
	      int len;
	      char * str;
	      int weird;
	      int maybe_weird;
	      int mw_pos;

	      len = SCM_LENGTH (exp);
	      str = SCM_CHARS (exp);
	      scm_remember (&exp);
	      pos = 0;
	      weird = 0;
	      maybe_weird = 0;

	      if (len == 0)
		scm_gen_write (scm_regular_string, "#{}#", 4, port);

	      for (end = pos; end < len; ++end)
		switch (str[end])
		  {
#ifdef BRACKETS_AS_PARENS
		  case '[':
		  case ']':
#endif
		  case '(':
		  case ')':
		  case '\"':
		  case ';':
		  case SCM_WHITE_SPACES:
		  case SCM_LINE_INCREMENTORS:
		  weird_handler:
		    if (maybe_weird)
		      {
			end = mw_pos;
			maybe_weird = 0;
		      }
		    if (!weird)
		      {
			scm_gen_write (scm_regular_string, "#{", 2, port);
			weird = 1;
		      }
		    if (pos < end)
		      {
			scm_gen_write (scm_regular_string, str + pos, end - pos, port);
		      }
		    {
		      char buf[2];
		      buf[0] = '\\';
		      buf[1] = str[end];
		      scm_gen_write (scm_regular_string, buf, 2, port);
		    }
		    pos = end + 1;
		    break;
		  case '\\':
		    if (weird)
		      goto weird_handler;
		    if (!maybe_weird)
		      {
			maybe_weird = 1;
			mw_pos = pos;
		      }
		    break;
		  case '}':
		  case '#':
		    if (weird)
		      goto weird_handler;
		    break;
		  default:
		    break;
		  }
	      if (pos < end)
		scm_gen_write (scm_regular_string, str + pos, end - pos, port);
	      if (weird)
		scm_gen_write (scm_regular_string, "}#", 2, port);
	      break;
	    }
	case scm_tc7_wvect:
	  if (SCM_IS_WHVEC (exp))
	    scm_gen_puts (scm_regular_string, "#wh(", port);
	  else
	    scm_gen_puts (scm_regular_string, "#w(", port);
	  goto common_vector_printer;

	case scm_tc7_vector:
	  scm_gen_puts (scm_regular_string, "#(", port);
	common_vector_printer:
	  for (i = 0; i + 1 < SCM_LENGTH (exp); ++i)
	    {
	      /* CHECK_INTS; */
	      scm_iprin1 (SCM_VELTS (exp)[i], port, writing);
	      scm_gen_putc (' ', port);
	    }
	  if (i < SCM_LENGTH (exp))
	    {
	      /* CHECK_INTS; */
	      scm_iprin1 (SCM_VELTS (exp)[i], port, writing);
	    }
	  scm_gen_putc (')', port);
	  break;
	case scm_tc7_bvect:
	case scm_tc7_byvect:
	case scm_tc7_svect:
	case scm_tc7_ivect:
	case scm_tc7_uvect:
	case scm_tc7_fvect:
	case scm_tc7_dvect:
	case scm_tc7_cvect:
#ifdef LONGLONGS
	case scm_tc7_llvect:
#endif
	  scm_raprin1 (exp, port, writing);
	  break;
	case scm_tcs_subrs:
	  scm_gen_puts (scm_regular_string, "#<primitive-procedure ", port);
	  scm_gen_puts ((SCM_MB_STRINGP (SCM_SNAME(exp))
			 ? scm_mb_string
			 : scm_regular_string),
			SCM_CHARS (SCM_SNAME (exp)), port);
	  scm_gen_putc ('>', port);
	  break;
#ifdef CCLO
	case scm_tc7_cclo:
	  scm_gen_puts (scm_regular_string, "#<compiled-closure ", port);
	  scm_iprin1 (SCM_CCLO_SUBR (exp), port, writing);
	  scm_gen_putc ('>', port);
	  break;
#endif
	case scm_tc7_contin:
	  scm_gen_puts (scm_regular_string, "#<continuation ", port);
	  scm_intprint (SCM_LENGTH (exp), 10, port);
	  scm_gen_puts (scm_regular_string, " @ ", port);
	  scm_intprint ((long) SCM_CHARS (exp), 16, port);
	  scm_gen_putc ('>', port);
	  break;
	case scm_tc7_port:
	  i = SCM_PTOBNUM (exp);
	  if (i < scm_numptob && scm_ptobs[i].print && (scm_ptobs[i].print) (exp, port, writing))
	    break;
	  goto punk;
	case scm_tc7_smob:
	  i = SCM_SMOBNUM (exp);
	  if (i < scm_numsmob && scm_smobs[i].print
	      && (scm_smobs[i].print) (exp, port, writing))
	    break;
	  goto punk;
	default:
	punk:scm_ipruk ("type", exp, port);
	}
    }
}


/* Print an integer.
 */
#ifdef __STDC__
void 
scm_intprint (long n, int radix, SCM port)
#else
void 
scm_intprint (n, radix, port)
     long n;
     int radix;
     SCM port;
#endif
{
  char num_buf[SCM_INTBUFLEN];
  scm_gen_write (scm_regular_string, num_buf, scm_iint2str (n, radix, num_buf), port);
}

/* Print an object of unrecognized type.
 */
#ifdef __STDC__
void 
scm_ipruk (char *hdr, SCM ptr, SCM port)
#else
void 
scm_ipruk (hdr, ptr, port)
     char *hdr;
     SCM ptr;
     SCM port;
#endif
{
  scm_gen_puts (scm_regular_string, "#<unknown-", port);
  scm_gen_puts (scm_regular_string, hdr, port);
  if (SCM_CELLP (ptr))
    {
      scm_gen_puts (scm_regular_string, " (0x", port);
      scm_intprint (SCM_CAR (ptr), 16, port);
      scm_gen_puts (scm_regular_string, " . 0x", port);
      scm_intprint (SCM_CDR (ptr), 16, port);
      scm_gen_puts (scm_regular_string, ") @", port);
    }
  scm_gen_puts (scm_regular_string, " 0x", port);
  scm_intprint (ptr, 16, port);
  scm_gen_putc ('>', port);
}

/* Print a list.
 */
#ifdef __STDC__
void 
scm_iprlist (char *hdr, SCM exp, char tlr, SCM port, int writing)
#else
void 
scm_iprlist (hdr, exp, tlr, port, writing)
     char *hdr;
     SCM exp;
     char tlr;
     SCM port;
     int writing;
#endif
{
  scm_gen_puts (scm_regular_string, hdr, port);
  /* CHECK_INTS; */
  scm_iprin1 (SCM_CAR (exp), port, writing);
  exp = SCM_CDR (exp);
  for (; SCM_NIMP (exp); exp = SCM_CDR (exp))
    {
      if (SCM_NECONSP (exp))
	break;
      scm_gen_putc (' ', port);
      /* CHECK_INTS; */
      scm_iprin1 (SCM_CAR (exp), port, writing);
    }
  if (SCM_NNULLP (exp))
    {
      scm_gen_puts (scm_regular_string, " . ", port);
      scm_iprin1 (exp, port, writing);
    }
  scm_gen_putc (tlr, port);
}

\f

SCM_PROC(s_write, "write", 1, 1, 0, scm_write);
#ifdef __STDC__
SCM 
scm_write (SCM obj, SCM port)
#else
SCM 
scm_write (obj, port)
     SCM obj;
     SCM port;
#endif
{
  if (SCM_UNBNDP (port))
    port = scm_cur_outp;
  else
    SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_write);
  scm_iprin1 (obj, port, 1);
#ifdef HAVE_PIPE
# ifdef EPIPE
  if (EPIPE == errno)
    scm_close_port (port);
# endif
#endif
  return SCM_UNSPECIFIED;
}


SCM_PROC(s_display, "display", 1, 1, 0, scm_display);
#ifdef __STDC__
SCM 
scm_display (SCM obj, SCM port)
#else
SCM 
scm_display (obj, port)
     SCM obj;
     SCM port;
#endif
{
  if (SCM_UNBNDP (port))
    port = scm_cur_outp;
  else
    SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_display);
  scm_iprin1 (obj, port, 0);
#ifdef HAVE_PIPE
# ifdef EPIPE
  if (EPIPE == errno)
    scm_close_port (port);
# endif
#endif
  return SCM_UNSPECIFIED;
}

SCM_PROC(s_newline, "newline", 0, 1, 0, scm_newline);
#ifdef __STDC__
SCM
scm_newline(SCM port)
#else
SCM 
scm_newline (port)
     SCM port;
#endif
{
  if (SCM_UNBNDP (port))
 port = scm_cur_outp;
  else
    SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_newline);
  scm_gen_putc ('\n', port);
#ifdef HAVE_PIPE
# ifdef EPIPE
  if (EPIPE == errno)
    scm_close_port (port);
  else
# endif
#endif
  if (port == scm_cur_outp)
    scm_fflush (port);
  return SCM_UNSPECIFIED;
}

SCM_PROC(s_write_char, "write-char", 1, 1, 0, scm_write_char);
#ifdef __STDC__
SCM 
scm_write_char (SCM chr, SCM port)
#else
SCM 
scm_write_char (chr, port)
     SCM chr;
     SCM port;
#endif
{
  if (SCM_UNBNDP (port))
 port = scm_cur_outp;
  else
    SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_write_char);
  SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG1, s_write_char);
  scm_gen_putc ((int) SCM_ICHR (chr), port);
#ifdef HAVE_PIPE
# ifdef EPIPE
  if (EPIPE == errno)
    scm_close_port (port);
# endif
#endif
  return SCM_UNSPECIFIED;
}


\f

#ifdef __STDC__
void
scm_init_print (void)
#else
void
scm_init_print ()
#endif
{
#ifdef DEBUG_EXTENSIONS
  scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS);
#endif
#include "print.x"
}
Commit	Line	Data
0f2d19dd JB	1	/* Copyright (C) 1995,1996 Free Software Foundation, Inc.
	2	*
	3	* This program is free software; you can redistribute it and/or modify
	4	* it under the terms of the GNU General Public License as published by
	5	* the Free Software Foundation; either version 2, or (at your option)
	6	* any later version.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*
	13	* You should have received a copy of the GNU General Public License
	14	* along with this software; see the file COPYING. If not, write to
	15	* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
	16	*
	17	* As a special exception, the Free Software Foundation gives permission
	18	* for additional uses of the text contained in its release of GUILE.
	19	*
	20	* The exception is that, if you link the GUILE library with other files
	21	* to produce an executable, this does not by itself cause the
	22	* resulting executable to be covered by the GNU General Public License.
	23	* Your use of that executable is in no way restricted on account of
	24	* linking the GUILE library code into it.
	25	*
	26	* This exception does not however invalidate any other reasons why
	27	* the executable file might be covered by the GNU General Public License.
	28	*
	29	* This exception applies only to the code released by the
	30	* Free Software Foundation under the name GUILE. If you copy
	31	* code from other Free Software Foundation releases into a copy of
	32	* GUILE, as the General Public License permits, the exception does
	33	* not apply to the code that you add in this way. To avoid misleading
	34	* anyone as to the status of such modified files, you must delete
	35	* this exception notice from them.
	36	*
	37	* If you write modifications of your own for GUILE, it is your choice
	38	* whether to permit this exception to apply to your modifications.
	39	* If you do not wish that, delete this exception notice.
	40	*/
	41	\f
	42
	43	#include <stdio.h>
	44	#include "_scm.h"
	45
	46	\f
	47
	48	\f
	49
	50	/* {Names of immediate symbols}
	51	*
	52	* This table must agree with the declarations in scm.h: {Immediate Symbols}.
	53	*/
	54
	55	char *scm_isymnames[] =
	56	{
	57	/* This table must agree with the declarations */
	58	"#@and",
	59	"#@begin",
	60	"#@case",
	61	"#@cond",
	62	"#@do",
	63	"#@if",
	64	"#@lambda",
65	"#@let",
66	"#@let*",
67	"#@letrec",
68	"#@or",
69	"#@quote",
70	"#@set!",
71	"#@define",
72	#if 0
73	"#@literal-variable-ref",
74	"#@literal-variable-set!",
75	#endif
76	"#@apply",
77	"#@call-with-current-continuation",
78
79	/* user visible ISYMS */
80	/* other keywords */
81	/* Flags */
82
83	"#f",
84	"#t",
85	"#<undefined>",
86	"#<eof>",
87	"()",
88	"#<unspecified>"
89	};
90
e6e4c9af MD	91	#ifdef DEBUG_EXTENSIONS
e6e4c9af MD	92	scm_option scm_print_opts[] = {
b7ff98dd MD	93	{ SCM_OPTION_BOOLEAN, "procnames", 0,
	94	"Print names instead of closures." },
	95	{ SCM_OPTION_SCM, "closure-hook", SCM_BOOL_F,
	96	"Procedure used to print closures." }
e6e4c9af MD	97	};
e6e4c9af MD	98
b7ff98dd	99	SCM_PROC (s_print_options, "print-options-interface", 0, 1, 0, scm_print_options);
e6e4c9af MD	100	#ifdef __STDC__
	101	SCM
	102	scm_print_options (SCM new_values)
	103	#else
	104	SCM
	105	scm_print_options (new_values)
	106	SCM new_values;
	107	#endif
	108	{
b7ff98dd MD	109	SCM ans = scm_options (new_values,
	110	scm_print_opts,
	111	SCM_N_PRINT_OPTIONS,
	112	s_print_options);
e6e4c9af MD	113	return ans;
	114	}
	115	#endif
	116
0f2d19dd JB	117	\f
	118	/* {Printing of Scheme Objects}
	119	*/
	120
	121	/* Print generally. Handles both write and display according to WRITING.
	122	*/
	123	#ifdef __STDC__
	124	void
	125	scm_iprin1 (SCM exp, SCM port, int writing)
	126	#else
	127	void
	128	scm_iprin1 (exp, port, writing)
	129	SCM exp;
	130	SCM port;
	131	int writing;
	132	#endif
	133	{
	134	register long i;
	135	taloop:
	136	switch (7 & (int) exp)
	137	{
	138	case 2:
	139	case 6:
	140	scm_intprint (SCM_INUM (exp), 10, port);
	141	break;
	142	case 4:
	143	if (SCM_ICHRP (exp))
	144	{
	145	i = SCM_ICHR (exp);
	146	scm_put_wchar (i, port, writing);
	147
	148	}
	149	else if ( SCM_IFLAGP (exp)
	150	&& (SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *))))
	151	scm_gen_puts (scm_regular_string, SCM_ISYMSCM_CHARS (exp), port);
	152	else if (SCM_ILOCP (exp))
	153	{
	154	scm_gen_puts (scm_regular_string, "#@", port);
	155	scm_intprint ((long) SCM_IFRAME (exp), 10, port);
	156	scm_gen_putc (SCM_ICDRP (exp) ? '-' : '+', port);
	157	scm_intprint ((long) SCM_IDIST (exp), 10, port);
	158	}
	159	else
	160	goto idef;
	161	break;
	162	case 1:
	163	/* gloc */
	164	scm_gen_puts (scm_regular_string, "#@", port);
	165	exp = SCM_CAR (exp - 1);
	166	goto taloop;
	167	default:
	168	idef:
	169	scm_ipruk ("immediate", exp, port);
	170	break;
	171	case 0:
	172	switch (SCM_TYP7 (exp))
	173	{
	174	case scm_tcs_cons_gloc:
	175
	176	if (SCM_CDR (SCM_CAR (exp) - 1L) == 0)
	177	{
	178	scm_gen_write (scm_regular_string, "#<struct ", (scm_sizet) 9, port);
	179	scm_intprint(exp, 16, port);
	180	scm_gen_putc ('>', port);
181	break;
182	}
183
184	case scm_tcs_cons_imcar:
185	case scm_tcs_cons_nimcar:
186	scm_iprlist ("(", exp, ')', port, writing);
187	break;
188	case scm_tcs_closures:
189	#ifdef DEBUG_EXTENSIONS
b7ff98dd	190	if (SCM_PRINT_PROCNAMES_P)
0f2d19dd JB	191	{
	192	SCM name;
	193	name = scm_procedure_property (exp, scm_i_name);
	194	scm_gen_puts (scm_regular_string, "#<procedure", port);
	195	if (SCM_NFALSEP (name))
	196	{
	197	scm_gen_putc (' ', port);
	198	/* FIXME */
	199	scm_gen_puts (scm_regular_string, SCM_CHARS (name), port);
	200	}
	201	scm_gen_putc ('>', port);
	202	}
	203	else
	204	#endif
	205	{
	206	exp = SCM_CODE (exp);
	207	scm_iprlist ("#<CLOSURE ", exp, '>', port, writing);
	208	}
	209	break;
	210	case scm_tc7_mb_string:
	211	case scm_tc7_mb_substring:
	212	scm_print_mb_string (exp, port, writing);
	213	break;
	214	case scm_tc7_substring:
	215	case scm_tc7_string:
	216	if (writing)
	217	{
	218	scm_gen_putc ('\"', port);
	219	for (i = 0; i < SCM_ROLENGTH (exp); ++i)
	220	switch (SCM_ROCHARS (exp)[i])
	221	{
	222	case '\"':
	223	case '\\':
	224	scm_gen_putc ('\\', port);
	225	default:
	226	scm_gen_putc (SCM_ROCHARS (exp)[i], port);
	227	}
	228	scm_gen_putc ('\"', port);
	229	break;
	230	}
	231	else
	232	scm_gen_write (scm_regular_string, SCM_ROCHARS (exp),
	233	(scm_sizet) SCM_ROLENGTH (exp),
	234	port);
	235	break;
	236	case scm_tcs_symbols:
	237	if (SCM_MB_STRINGP (exp))
	238	{
	239	scm_print_mb_symbol (exp, port);
	240	break;
	241	}
	242	else
	243	{
	244	int pos;
	245	int end;
	246	int len;
	247	char * str;
	248	int weird;
	249	int maybe_weird;
	250	int mw_pos;
	251
	252	len = SCM_LENGTH (exp);
	253	str = SCM_CHARS (exp);
	254	scm_remember (&exp);
255	pos = 0;
256	weird = 0;
257	maybe_weird = 0;
258
259	if (len == 0)
260	scm_gen_write (scm_regular_string, "#{}#", 4, port);
261
262	for (end = pos; end < len; ++end)
263	switch (str[end])
264	{
265	#ifdef BRACKETS_AS_PARENS
266	case '[':
267	case ']':
268	#endif
269	case '(':
270	case ')':
271	case '\"':
272	case ';':
273	case SCM_WHITE_SPACES:
274	case SCM_LINE_INCREMENTORS:
275	weird_handler:
276	if (maybe_weird)
277	{
278	end = mw_pos;
279	maybe_weird = 0;
280	}
281	if (!weird)
282	{
283	scm_gen_write (scm_regular_string, "#{", 2, port);
284	weird = 1;
285	}
286	if (pos < end)
287	{
288	scm_gen_write (scm_regular_string, str + pos, end - pos, port);
289	}
290	{
291	char buf[2];
292	buf[0] = '\\';
293	buf[1] = str[end];
294	scm_gen_write (scm_regular_string, buf, 2, port);
295	}
296	pos = end + 1;
297	break;
298	case '\\':
299	if (weird)
300	goto weird_handler;
301	if (!maybe_weird)
302	{
303	maybe_weird = 1;
304	mw_pos = pos;
305	}
306	break;
307	case '}':
308	case '#':
309	if (weird)
310	goto weird_handler;
311	break;
312	default:
313	break;
314	}
315	if (pos < end)
316	scm_gen_write (scm_regular_string, str + pos, end - pos, port);
317	if (weird)
318	scm_gen_write (scm_regular_string, "}#", 2, port);
319	break;
320	}
321	case scm_tc7_wvect:
322	if (SCM_IS_WHVEC (exp))
323	scm_gen_puts (scm_regular_string, "#wh(", port);
324	else
325	scm_gen_puts (scm_regular_string, "#w(", port);
326	goto common_vector_printer;
327
328	case scm_tc7_vector:
329	scm_gen_puts (scm_regular_string, "#(", port);
330	common_vector_printer:
331	for (i = 0; i + 1 < SCM_LENGTH (exp); ++i)
332	{
333	/* CHECK_INTS; */
334	scm_iprin1 (SCM_VELTS (exp)[i], port, writing);
335	scm_gen_putc (' ', port);
336	}
337	if (i < SCM_LENGTH (exp))
338	{
339	/* CHECK_INTS; */
340	scm_iprin1 (SCM_VELTS (exp)[i], port, writing);
341	}
342	scm_gen_putc (')', port);
343	break;
344	case scm_tc7_bvect:
345	case scm_tc7_byvect:
346	case scm_tc7_svect:
347	case scm_tc7_ivect:
348	case scm_tc7_uvect:
349	case scm_tc7_fvect:
350	case scm_tc7_dvect:
351	case scm_tc7_cvect:
352	#ifdef LONGLONGS
353	case scm_tc7_llvect:
354	#endif
355	scm_raprin1 (exp, port, writing);
356	break;
357	case scm_tcs_subrs:
358	scm_gen_puts (scm_regular_string, "#<primitive-procedure ", port);
359	scm_gen_puts ((SCM_MB_STRINGP (SCM_SNAME(exp))
360	? scm_mb_string
361	: scm_regular_string),
362	SCM_CHARS (SCM_SNAME (exp)), port);
363	scm_gen_putc ('>', port);
364	break;
365	#ifdef CCLO
366	case scm_tc7_cclo:
367	scm_gen_puts (scm_regular_string, "#<compiled-closure ", port);
368	scm_iprin1 (SCM_CCLO_SUBR (exp), port, writing);
369	scm_gen_putc ('>', port);
370	break;
371	#endif
372	case scm_tc7_contin:
373	scm_gen_puts (scm_regular_string, "#<continuation ", port);
374	scm_intprint (SCM_LENGTH (exp), 10, port);
375	scm_gen_puts (scm_regular_string, " @ ", port);
376	scm_intprint ((long) SCM_CHARS (exp), 16, port);
377	scm_gen_putc ('>', port);
378	break;
379	case scm_tc7_port:
380	i = SCM_PTOBNUM (exp);
381	if (i < scm_numptob && scm_ptobs[i].print && (scm_ptobs[i].print) (exp, port, writing))
382	break;
383	goto punk;
384	case scm_tc7_smob:
385	i = SCM_SMOBNUM (exp);
386	if (i < scm_numsmob && scm_smobs[i].print
387	&& (scm_smobs[i].print) (exp, port, writing))
388	break;
389	goto punk;
390	default:
391	punk:scm_ipruk ("type", exp, port);
392	}
393	}
394	}
395
396
397	/* Print an integer.
398	*/
399	#ifdef __STDC__
400	void
401	scm_intprint (long n, int radix, SCM port)
402	#else
403	void
404	scm_intprint (n, radix, port)
405	long n;
406	int radix;
407	SCM port;
408	#endif
409	{
410	char num_buf[SCM_INTBUFLEN];
411	scm_gen_write (scm_regular_string, num_buf, scm_iint2str (n, radix, num_buf), port);
412	}
413
414	/* Print an object of unrecognized type.
415	*/
416	#ifdef __STDC__
417	void
418	scm_ipruk (char *hdr, SCM ptr, SCM port)
419	#else
420	void
421	scm_ipruk (hdr, ptr, port)
422	char *hdr;
423	SCM ptr;
424	SCM port;
425	#endif
426	{
427	scm_gen_puts (scm_regular_string, "#<unknown-", port);
428	scm_gen_puts (scm_regular_string, hdr, port);
429	if (SCM_CELLP (ptr))
430	{
431	scm_gen_puts (scm_regular_string, " (0x", port);
432	scm_intprint (SCM_CAR (ptr), 16, port);
433	scm_gen_puts (scm_regular_string, " . 0x", port);
434	scm_intprint (SCM_CDR (ptr), 16, port);
435	scm_gen_puts (scm_regular_string, ") @", port);
436	}
437	scm_gen_puts (scm_regular_string, " 0x", port);
438	scm_intprint (ptr, 16, port);
439	scm_gen_putc ('>', port);
440	}
441
442	/* Print a list.
443	*/
444	#ifdef __STDC__
445	void
446	scm_iprlist (char *hdr, SCM exp, char tlr, SCM port, int writing)
447	#else
448	void
449	scm_iprlist (hdr, exp, tlr, port, writing)
450	char *hdr;
451	SCM exp;
452	char tlr;
453	SCM port;
454	int writing;
455	#endif
456	{
457	scm_gen_puts (scm_regular_string, hdr, port);
458	/* CHECK_INTS; */
459	scm_iprin1 (SCM_CAR (exp), port, writing);
460	exp = SCM_CDR (exp);
461	for (; SCM_NIMP (exp); exp = SCM_CDR (exp))
462	{
463	if (SCM_NECONSP (exp))
464	break;
465	scm_gen_putc (' ', port);
466	/* CHECK_INTS; */
467	scm_iprin1 (SCM_CAR (exp), port, writing);
468	}
469	if (SCM_NNULLP (exp))
470	{
471	scm_gen_puts (scm_regular_string, " . ", port);
472	scm_iprin1 (exp, port, writing);
473	}
474	scm_gen_putc (tlr, port);
475	}
476
477	\f
478
479	SCM_PROC(s_write, "write", 1, 1, 0, scm_write);
480	#ifdef __STDC__
481	SCM
482	scm_write (SCM obj, SCM port)
483	#else
484	SCM
485	scm_write (obj, port)
486	SCM obj;
487	SCM port;
488	#endif
489	{
490	if (SCM_UNBNDP (port))
491	port = scm_cur_outp;
492	else
493	SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_write);
494	scm_iprin1 (obj, port, 1);
495	#ifdef HAVE_PIPE
496	# ifdef EPIPE
497	if (EPIPE == errno)
498	scm_close_port (port);
499	# endif
500	#endif
501	return SCM_UNSPECIFIED;
502	}
503
504
505	SCM_PROC(s_display, "display", 1, 1, 0, scm_display);
506	#ifdef __STDC__
507	SCM
508	scm_display (SCM obj, SCM port)
509	#else
510	SCM
511	scm_display (obj, port)
512	SCM obj;
513	SCM port;
514	#endif
515	{
516	if (SCM_UNBNDP (port))
517	port = scm_cur_outp;
518	else
519	SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_display);
520	scm_iprin1 (obj, port, 0);
521	#ifdef HAVE_PIPE
522	# ifdef EPIPE
523	if (EPIPE == errno)
524	scm_close_port (port);
525	# endif
526	#endif
527	return SCM_UNSPECIFIED;
528	}
529
530	SCM_PROC(s_newline, "newline", 0, 1, 0, scm_newline);
531	#ifdef __STDC__
532	SCM
533	scm_newline(SCM port)
534	#else
535	SCM
536	scm_newline (port)
537	SCM port;
538	#endif
539	{
540	if (SCM_UNBNDP (port))
541	port = scm_cur_outp;
542	else
543	SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_newline);
544	scm_gen_putc ('\n', port);
545	#ifdef HAVE_PIPE
546	# ifdef EPIPE
547	if (EPIPE == errno)
548	scm_close_port (port);
549	else
550	# endif
551	#endif
552	if (port == scm_cur_outp)
553	scm_fflush (port);
554	return SCM_UNSPECIFIED;
555	}
556
557	SCM_PROC(s_write_char, "write-char", 1, 1, 0, scm_write_char);
558	#ifdef __STDC__
559	SCM
560	scm_write_char (SCM chr, SCM port)
561	#else
562	SCM
563	scm_write_char (chr, port)
564	SCM chr;
565	SCM port;
566	#endif
567	{
568	if (SCM_UNBNDP (port))
569	port = scm_cur_outp;
570	else
571	SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_write_char);
572	SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG1, s_write_char);
573	scm_gen_putc ((int) SCM_ICHR (chr), port);
574	#ifdef HAVE_PIPE
575	# ifdef EPIPE
576	if (EPIPE == errno)
577	scm_close_port (port);
578	# endif
579	#endif
580	return SCM_UNSPECIFIED;
581	}
582
583
584	\f
585
586	#ifdef __STDC__
587	void
588	scm_init_print (void)
589	#else
590	void
591	scm_init_print ()
592	#endif
593	{
e6e4c9af	594	#ifdef DEBUG_EXTENSIONS
b7ff98dd	595	scm_init_opts (scm_print_options, scm_print_opts, SCM_N_PRINT_OPTIONS);
e6e4c9af	596	#endif
0f2d19dd JB	597	#include "print.x"
	598	}
	599