[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 },
};

SCM_PROC (s_print_options, "print-options", 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_change_options (new_values,
				scm_print_opts,
				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 (PRINT_PROCNAMES)
	    {
	      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, 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
	92	scm_option scm_print_opts[] = {
	93	{ SCM_OPTION_BOOLEAN, "procnames", 0 },
	94	};
	95
	96	SCM_PROC (s_print_options, "print-options", 0, 1, 0, scm_print_options);
	97	#ifdef __STDC__
	98	SCM
	99	scm_print_options (SCM new_values)
	100	#else
	101	SCM
	102	scm_print_options (new_values)
	103	SCM new_values;
	104	#endif
	105	{
	106	SCM ans = scm_change_options (new_values,
	107	scm_print_opts,
	108	N_PRINT_OPTIONS,
	109	s_print_options);
	110	return ans;
	111	}
	112	#endif
	113
0f2d19dd JB	114	\f
	115	/* {Printing of Scheme Objects}
	116	*/
	117
	118	/* Print generally. Handles both write and display according to WRITING.
	119	*/
	120	#ifdef __STDC__
	121	void
	122	scm_iprin1 (SCM exp, SCM port, int writing)
	123	#else
	124	void
	125	scm_iprin1 (exp, port, writing)
	126	SCM exp;
	127	SCM port;
	128	int writing;
	129	#endif
	130	{
	131	register long i;
	132	taloop:
	133	switch (7 & (int) exp)
	134	{
	135	case 2:
	136	case 6:
	137	scm_intprint (SCM_INUM (exp), 10, port);
	138	break;
	139	case 4:
	140	if (SCM_ICHRP (exp))
	141	{
	142	i = SCM_ICHR (exp);
	143	scm_put_wchar (i, port, writing);
	144
	145	}
	146	else if ( SCM_IFLAGP (exp)
	147	&& (SCM_ISYMNUM (exp) < (sizeof scm_isymnames / sizeof (char *))))
	148	scm_gen_puts (scm_regular_string, SCM_ISYMSCM_CHARS (exp), port);
	149	else if (SCM_ILOCP (exp))
	150	{
	151	scm_gen_puts (scm_regular_string, "#@", port);
	152	scm_intprint ((long) SCM_IFRAME (exp), 10, port);
	153	scm_gen_putc (SCM_ICDRP (exp) ? '-' : '+', port);
	154	scm_intprint ((long) SCM_IDIST (exp), 10, port);
	155	}
	156	else
	157	goto idef;
	158	break;
	159	case 1:
	160	/* gloc */
	161	scm_gen_puts (scm_regular_string, "#@", port);
	162	exp = SCM_CAR (exp - 1);
	163	goto taloop;
	164	default:
	165	idef:
	166	scm_ipruk ("immediate", exp, port);
	167	break;
	168	case 0:
	169	switch (SCM_TYP7 (exp))
	170	{
	171	case scm_tcs_cons_gloc:
	172
	173	if (SCM_CDR (SCM_CAR (exp) - 1L) == 0)
	174	{
	175	scm_gen_write (scm_regular_string, "#<struct ", (scm_sizet) 9, port);
	176	scm_intprint(exp, 16, port);
	177	scm_gen_putc ('>', port);
178	break;
179	}
180
181	case scm_tcs_cons_imcar:
182	case scm_tcs_cons_nimcar:
183	scm_iprlist ("(", exp, ')', port, writing);
184	break;
185	case scm_tcs_closures:
186	#ifdef DEBUG_EXTENSIONS
187	if (PRINT_PROCNAMES)
188	{
189	SCM name;
190	name = scm_procedure_property (exp, scm_i_name);
191	scm_gen_puts (scm_regular_string, "#<procedure", port);
192	if (SCM_NFALSEP (name))
193	{
194	scm_gen_putc (' ', port);
195	/* FIXME */
196	scm_gen_puts (scm_regular_string, SCM_CHARS (name), port);
197	}
198	scm_gen_putc ('>', port);
199	}
200	else
201	#endif
202	{
203	exp = SCM_CODE (exp);
204	scm_iprlist ("#<CLOSURE ", exp, '>', port, writing);
205	}
206	break;
207	case scm_tc7_mb_string:
208	case scm_tc7_mb_substring:
209	scm_print_mb_string (exp, port, writing);
210	break;
211	case scm_tc7_substring:
212	case scm_tc7_string:
213	if (writing)
214	{
215	scm_gen_putc ('\"', port);
216	for (i = 0; i < SCM_ROLENGTH (exp); ++i)
217	switch (SCM_ROCHARS (exp)[i])
218	{
219	case '\"':
220	case '\\':
221	scm_gen_putc ('\\', port);
222	default:
223	scm_gen_putc (SCM_ROCHARS (exp)[i], port);
224	}
225	scm_gen_putc ('\"', port);
226	break;
227	}
228	else
229	scm_gen_write (scm_regular_string, SCM_ROCHARS (exp),
230	(scm_sizet) SCM_ROLENGTH (exp),
231	port);
232	break;
233	case scm_tcs_symbols:
234	if (SCM_MB_STRINGP (exp))
235	{
236	scm_print_mb_symbol (exp, port);
237	break;
238	}
239	else
240	{
241	int pos;
242	int end;
243	int len;
244	char * str;
245	int weird;
246	int maybe_weird;
247	int mw_pos;
248
249	len = SCM_LENGTH (exp);
250	str = SCM_CHARS (exp);
251	scm_remember (&exp);
252	pos = 0;
253	weird = 0;
254	maybe_weird = 0;
255
256	if (len == 0)
257	scm_gen_write (scm_regular_string, "#{}#", 4, port);
258
259	for (end = pos; end < len; ++end)
260	switch (str[end])
261	{
262	#ifdef BRACKETS_AS_PARENS
263	case '[':
264	case ']':
265	#endif
266	case '(':
267	case ')':
268	case '\"':
269	case ';':
270	case SCM_WHITE_SPACES:
271	case SCM_LINE_INCREMENTORS:
272	weird_handler:
273	if (maybe_weird)
274	{
275	end = mw_pos;
276	maybe_weird = 0;
277	}
278	if (!weird)
279	{
280	scm_gen_write (scm_regular_string, "#{", 2, port);
281	weird = 1;
282	}
283	if (pos < end)
284	{
285	scm_gen_write (scm_regular_string, str + pos, end - pos, port);
286	}
287	{
288	char buf[2];
289	buf[0] = '\\';
290	buf[1] = str[end];
291	scm_gen_write (scm_regular_string, buf, 2, port);
292	}
293	pos = end + 1;
294	break;
295	case '\\':
296	if (weird)
297	goto weird_handler;
298	if (!maybe_weird)
299	{
300	maybe_weird = 1;
301	mw_pos = pos;
302	}
303	break;
304	case '}':
305	case '#':
306	if (weird)
307	goto weird_handler;
308	break;
309	default:
310	break;
311	}
312	if (pos < end)
313	scm_gen_write (scm_regular_string, str + pos, end - pos, port);
314	if (weird)
315	scm_gen_write (scm_regular_string, "}#", 2, port);
316	break;
317	}
318	case scm_tc7_wvect:
319	if (SCM_IS_WHVEC (exp))
320	scm_gen_puts (scm_regular_string, "#wh(", port);
321	else
322	scm_gen_puts (scm_regular_string, "#w(", port);
323	goto common_vector_printer;
324
325	case scm_tc7_vector:
326	scm_gen_puts (scm_regular_string, "#(", port);
327	common_vector_printer:
328	for (i = 0; i + 1 < SCM_LENGTH (exp); ++i)
329	{
330	/* CHECK_INTS; */
331	scm_iprin1 (SCM_VELTS (exp)[i], port, writing);
332	scm_gen_putc (' ', port);
333	}
334	if (i < SCM_LENGTH (exp))
335	{
336	/* CHECK_INTS; */
337	scm_iprin1 (SCM_VELTS (exp)[i], port, writing);
338	}
339	scm_gen_putc (')', port);
340	break;
341	case scm_tc7_bvect:
342	case scm_tc7_byvect:
343	case scm_tc7_svect:
344	case scm_tc7_ivect:
345	case scm_tc7_uvect:
346	case scm_tc7_fvect:
347	case scm_tc7_dvect:
348	case scm_tc7_cvect:
349	#ifdef LONGLONGS
350	case scm_tc7_llvect:
351	#endif
352	scm_raprin1 (exp, port, writing);
353	break;
354	case scm_tcs_subrs:
355	scm_gen_puts (scm_regular_string, "#<primitive-procedure ", port);
356	scm_gen_puts ((SCM_MB_STRINGP (SCM_SNAME(exp))
357	? scm_mb_string
358	: scm_regular_string),
359	SCM_CHARS (SCM_SNAME (exp)), port);
360	scm_gen_putc ('>', port);
361	break;
362	#ifdef CCLO
363	case scm_tc7_cclo:
364	scm_gen_puts (scm_regular_string, "#<compiled-closure ", port);
365	scm_iprin1 (SCM_CCLO_SUBR (exp), port, writing);
366	scm_gen_putc ('>', port);
367	break;
368	#endif
369	case scm_tc7_contin:
370	scm_gen_puts (scm_regular_string, "#<continuation ", port);
371	scm_intprint (SCM_LENGTH (exp), 10, port);
372	scm_gen_puts (scm_regular_string, " @ ", port);
373	scm_intprint ((long) SCM_CHARS (exp), 16, port);
374	scm_gen_putc ('>', port);
375	break;
376	case scm_tc7_port:
377	i = SCM_PTOBNUM (exp);
378	if (i < scm_numptob && scm_ptobs[i].print && (scm_ptobs[i].print) (exp, port, writing))
379	break;
380	goto punk;
381	case scm_tc7_smob:
382	i = SCM_SMOBNUM (exp);
383	if (i < scm_numsmob && scm_smobs[i].print
384	&& (scm_smobs[i].print) (exp, port, writing))
385	break;
386	goto punk;
387	default:
388	punk:scm_ipruk ("type", exp, port);
389	}
390	}
391	}
392
393
394	/* Print an integer.
395	*/
396	#ifdef __STDC__
397	void
398	scm_intprint (long n, int radix, SCM port)
399	#else
400	void
401	scm_intprint (n, radix, port)
402	long n;
403	int radix;
404	SCM port;
405	#endif
406	{
407	char num_buf[SCM_INTBUFLEN];
408	scm_gen_write (scm_regular_string, num_buf, scm_iint2str (n, radix, num_buf), port);
409	}
410
411	/* Print an object of unrecognized type.
412	*/
413	#ifdef __STDC__
414	void
415	scm_ipruk (char *hdr, SCM ptr, SCM port)
416	#else
417	void
418	scm_ipruk (hdr, ptr, port)
419	char *hdr;
420	SCM ptr;
421	SCM port;
422	#endif
423	{
424	scm_gen_puts (scm_regular_string, "#<unknown-", port);
425	scm_gen_puts (scm_regular_string, hdr, port);
426	if (SCM_CELLP (ptr))
427	{
428	scm_gen_puts (scm_regular_string, " (0x", port);
429	scm_intprint (SCM_CAR (ptr), 16, port);
430	scm_gen_puts (scm_regular_string, " . 0x", port);
431	scm_intprint (SCM_CDR (ptr), 16, port);
432	scm_gen_puts (scm_regular_string, ") @", port);
433	}
434	scm_gen_puts (scm_regular_string, " 0x", port);
435	scm_intprint (ptr, 16, port);
436	scm_gen_putc ('>', port);
437	}
438
439	/* Print a list.
440	*/
441	#ifdef __STDC__
442	void
443	scm_iprlist (char *hdr, SCM exp, char tlr, SCM port, int writing)
444	#else
445	void
446	scm_iprlist (hdr, exp, tlr, port, writing)
447	char *hdr;
448	SCM exp;
449	char tlr;
450	SCM port;
451	int writing;
452	#endif
453	{
454	scm_gen_puts (scm_regular_string, hdr, port);
455	/* CHECK_INTS; */
456	scm_iprin1 (SCM_CAR (exp), port, writing);
457	exp = SCM_CDR (exp);
458	for (; SCM_NIMP (exp); exp = SCM_CDR (exp))
459	{
460	if (SCM_NECONSP (exp))
461	break;
462	scm_gen_putc (' ', port);
463	/* CHECK_INTS; */
464	scm_iprin1 (SCM_CAR (exp), port, writing);
465	}
466	if (SCM_NNULLP (exp))
467	{
468	scm_gen_puts (scm_regular_string, " . ", port);
469	scm_iprin1 (exp, port, writing);
470	}
471	scm_gen_putc (tlr, port);
472	}
473
474	\f
475
476	SCM_PROC(s_write, "write", 1, 1, 0, scm_write);
477	#ifdef __STDC__
478	SCM
479	scm_write (SCM obj, SCM port)
480	#else
481	SCM
482	scm_write (obj, port)
483	SCM obj;
484	SCM port;
485	#endif
486	{
487	if (SCM_UNBNDP (port))
488	port = scm_cur_outp;
489	else
490	SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_write);
491	scm_iprin1 (obj, port, 1);
492	#ifdef HAVE_PIPE
493	# ifdef EPIPE
494	if (EPIPE == errno)
495	scm_close_port (port);
496	# endif
497	#endif
498	return SCM_UNSPECIFIED;
499	}
500
501
502	SCM_PROC(s_display, "display", 1, 1, 0, scm_display);
503	#ifdef __STDC__
504	SCM
505	scm_display (SCM obj, SCM port)
506	#else
507	SCM
508	scm_display (obj, port)
509	SCM obj;
510	SCM port;
511	#endif
512	{
513	if (SCM_UNBNDP (port))
514	port = scm_cur_outp;
515	else
516	SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_display);
517	scm_iprin1 (obj, port, 0);
518	#ifdef HAVE_PIPE
519	# ifdef EPIPE
520	if (EPIPE == errno)
521	scm_close_port (port);
522	# endif
523	#endif
524	return SCM_UNSPECIFIED;
525	}
526
527	SCM_PROC(s_newline, "newline", 0, 1, 0, scm_newline);
528	#ifdef __STDC__
529	SCM
530	scm_newline(SCM port)
531	#else
532	SCM
533	scm_newline (port)
534	SCM port;
535	#endif
536	{
537	if (SCM_UNBNDP (port))
538	port = scm_cur_outp;
539	else
540	SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG1, s_newline);
541	scm_gen_putc ('\n', port);
542	#ifdef HAVE_PIPE
543	# ifdef EPIPE
544	if (EPIPE == errno)
545	scm_close_port (port);
546	else
547	# endif
548	#endif
549	if (port == scm_cur_outp)
550	scm_fflush (port);
551	return SCM_UNSPECIFIED;
552	}
553
554	SCM_PROC(s_write_char, "write-char", 1, 1, 0, scm_write_char);
555	#ifdef __STDC__
556	SCM
557	scm_write_char (SCM chr, SCM port)
558	#else
559	SCM
560	scm_write_char (chr, port)
561	SCM chr;
562	SCM port;
563	#endif
564	{
565	if (SCM_UNBNDP (port))
566	port = scm_cur_outp;
567	else
568	SCM_ASSERT (SCM_NIMP (port) && SCM_OPOUTPORTP (port), port, SCM_ARG2, s_write_char);
569	SCM_ASSERT (SCM_ICHRP (chr), chr, SCM_ARG1, s_write_char);
570	scm_gen_putc ((int) SCM_ICHR (chr), port);
571	#ifdef HAVE_PIPE
572	# ifdef EPIPE
573	if (EPIPE == errno)
574	scm_close_port (port);
575	# endif
576	#endif
577	return SCM_UNSPECIFIED;
578	}
579
580
581	\f
582
583	#ifdef __STDC__
584	void
585	scm_init_print (void)
586	#else
587	void
588	scm_init_print ()
589	#endif
590	{
e6e4c9af MD	591	#ifdef DEBUG_EXTENSIONS
	592	scm_init_opts (scm_print_options, scm_print_opts, N_PRINT_OPTIONS);
	593	#endif
0f2d19dd JB	594	#include "print.x"
	595	}
	596