1 /* Copyright (C) 1995-1999, 2000, 2001, 2002, 2003, 2004, 2006, 2008,
2 * 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public License
6 * as published by the Free Software Foundation; either version 3 of
7 * the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
33 #include <c-strcase.h>
35 #include "libguile/_scm.h"
36 #include "libguile/chars.h"
37 #include "libguile/continuations.h"
38 #include "libguile/smob.h"
39 #include "libguile/control.h"
40 #include "libguile/eval.h"
41 #include "libguile/macros.h"
42 #include "libguile/procprop.h"
43 #include "libguile/read.h"
44 #include "libguile/weaks.h"
45 #include "libguile/programs.h"
46 #include "libguile/alist.h"
47 #include "libguile/struct.h"
48 #include "libguile/ports.h"
49 #include "libguile/ports-internal.h"
50 #include "libguile/root.h"
51 #include "libguile/strings.h"
52 #include "libguile/strports.h"
53 #include "libguile/vectors.h"
54 #include "libguile/numbers.h"
55 #include "libguile/vm.h"
57 #include "libguile/validate.h"
58 #include "libguile/print.h"
60 #include "libguile/private-options.h"
64 /* Character printers. */
66 #define PORT_CONVERSION_HANDLER(port) \
67 SCM_PTAB_ENTRY (port)->ilseq_handler
69 static size_t display_string (const void *, int, size_t, SCM
,
70 scm_t_string_failed_conversion_handler
);
72 static int display_character (scm_t_wchar
, SCM
,
73 scm_t_string_failed_conversion_handler
);
75 static void write_character (scm_t_wchar
, SCM
, int);
77 static void write_character_escaped (scm_t_wchar
, int, SCM
);
81 /* {Names of immediate symbols}
83 * This table must agree with the declarations in scm.h: {Immediate Symbols}.
86 /* This table must agree with the list of flags in tags.h. */
87 static const char *iflagnames
[] =
90 "#nil", /* Elisp nil value. Should print from elisp as symbol `nil'. */
91 "#<XXX UNUSED LISP FALSE -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>",
94 "#<XXX UNUSED BOOLEAN 0 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>",
95 "#<XXX UNUSED BOOLEAN 1 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>",
96 "#<XXX UNUSED BOOLEAN 2 -- DO NOT USE -- SHOULD NEVER BE SEEN XXX>",
101 /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */
105 SCM_SYMBOL (sym_reader
, "reader");
107 scm_t_option scm_print_opts
[] = {
108 { SCM_OPTION_SCM
, "highlight-prefix", (scm_t_bits
)SCM_BOOL_F_BITS
,
109 "The string to print before highlighted values." },
110 { SCM_OPTION_SCM
, "highlight-suffix", (scm_t_bits
)SCM_BOOL_F_BITS
,
111 "The string to print after highlighted values." },
112 { SCM_OPTION_SCM
, "quote-keywordish-symbols", (scm_t_bits
)SCM_BOOL_F_BITS
,
113 "How to print symbols that have a colon as their first or last character. "
114 "The value '#f' does not quote the colons; '#t' quotes them; "
115 "'reader' quotes them when the reader option 'keywords' is not '#f'." },
116 { SCM_OPTION_BOOLEAN
, "escape-newlines", 1,
117 "Render newlines as \\n when printing using `write'." },
121 SCM_DEFINE (scm_print_options
, "print-options-interface", 0, 1, 0,
123 "Option interface for the print options. Instead of using\n"
124 "this procedure directly, use the procedures\n"
125 "@code{print-enable}, @code{print-disable}, @code{print-set!}\n"
126 "and @code{print-options}.")
127 #define FUNC_NAME s_scm_print_options
129 SCM ans
= scm_options (setting
,
137 /* {Printing of Scheme Objects}
140 /* Detection of circular references.
142 * Due to other constraints in the implementation, this code has bad
143 * time complexity (O (depth * N)), The printer code can be
144 * rewritten to be O(N).
146 #define PUSH_REF(pstate, obj) \
149 PSTATE_STACK_SET (pstate, pstate->top, obj); \
151 if (pstate->top == pstate->ceiling) \
152 grow_ref_stack (pstate); \
155 #define ENTER_NESTED_DATA(pstate, obj, label) \
158 register unsigned long i; \
159 for (i = 0; i < pstate->top; ++i) \
160 if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \
162 if (pstate->fancyp) \
164 if (pstate->top - pstate->list_offset >= pstate->level) \
166 scm_putc ('#', port); \
170 PUSH_REF(pstate, obj); \
173 #define EXIT_NESTED_DATA(pstate) \
177 PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \
181 SCM scm_print_state_vtable
= SCM_BOOL_F
;
182 static SCM print_state_pool
= SCM_EOL
;
183 scm_i_pthread_mutex_t print_state_mutex
= SCM_I_PTHREAD_MUTEX_INITIALIZER
;
185 #ifdef GUILE_DEBUG /* Used for debugging purposes */
187 SCM_DEFINE (scm_current_pstate
, "current-pstate", 0, 0, 0,
189 "Return the current-pstate -- the car of the\n"
190 "@code{print_state_pool}. @code{current-pstate} is only\n"
191 "included in @code{--enable-guile-debug} builds.")
192 #define FUNC_NAME s_scm_current_pstate
194 if (!scm_is_null (print_state_pool
))
195 return SCM_CAR (print_state_pool
);
203 #define PSTATE_SIZE 50L
206 make_print_state (void)
209 = scm_make_struct (scm_print_state_vtable
, SCM_INUM0
, SCM_EOL
);
210 scm_print_state
*pstate
= SCM_PRINT_STATE (print_state
);
211 pstate
->ref_vect
= scm_c_make_vector (PSTATE_SIZE
, SCM_UNDEFINED
);
212 pstate
->ceiling
= SCM_SIMPLE_VECTOR_LENGTH (pstate
->ref_vect
);
213 pstate
->highlight_objects
= SCM_EOL
;
218 scm_make_print_state ()
220 SCM answer
= SCM_BOOL_F
;
222 /* First try to allocate a print state from the pool */
223 scm_i_pthread_mutex_lock (&print_state_mutex
);
224 if (!scm_is_null (print_state_pool
))
226 answer
= SCM_CAR (print_state_pool
);
227 print_state_pool
= SCM_CDR (print_state_pool
);
229 scm_i_pthread_mutex_unlock (&print_state_mutex
);
231 return scm_is_false (answer
) ? make_print_state () : answer
;
235 scm_free_print_state (SCM print_state
)
238 scm_print_state
*pstate
= SCM_PRINT_STATE (print_state
);
239 /* Cleanup before returning print state to pool.
240 * It is better to do it here. Doing it in scm_prin1
241 * would cost more since that function is called much more
245 pstate
->revealed
= 0;
246 pstate
->highlight_objects
= SCM_EOL
;
247 scm_i_pthread_mutex_lock (&print_state_mutex
);
248 handle
= scm_cons (print_state
, print_state_pool
);
249 print_state_pool
= handle
;
250 scm_i_pthread_mutex_unlock (&print_state_mutex
);
254 scm_i_port_with_print_state (SCM port
, SCM print_state
)
256 if (SCM_UNBNDP (print_state
))
258 if (SCM_PORT_WITH_PS_P (port
))
261 print_state
= scm_make_print_state ();
262 /* port does not need to be coerced since it doesn't have ps */
265 port
= SCM_COERCE_OUTPORT (port
);
266 SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps
,
267 SCM_UNPACK (scm_cons (port
, print_state
)));
271 grow_ref_stack (scm_print_state
*pstate
)
273 SCM old_vect
= pstate
->ref_vect
;
274 size_t old_size
= SCM_SIMPLE_VECTOR_LENGTH (old_vect
);
275 size_t new_size
= 2 * pstate
->ceiling
;
276 SCM new_vect
= scm_c_make_vector (new_size
, SCM_UNDEFINED
);
279 for (i
= 0; i
!= old_size
; ++i
)
280 SCM_SIMPLE_VECTOR_SET (new_vect
, i
, SCM_SIMPLE_VECTOR_REF (old_vect
, i
));
282 pstate
->ref_vect
= new_vect
;
283 pstate
->ceiling
= new_size
;
286 #define PSTATE_STACK_REF(p,i) SCM_SIMPLE_VECTOR_REF((p)->ref_vect, (i))
287 #define PSTATE_STACK_SET(p,i,v) SCM_SIMPLE_VECTOR_SET((p)->ref_vect, (i), (v))
290 print_circref (SCM port
, scm_print_state
*pstate
, SCM ref
)
293 long self
= pstate
->top
- 1;
295 if (scm_is_pair (PSTATE_STACK_REF (pstate
, i
)))
299 if (!scm_is_pair (PSTATE_STACK_REF (pstate
, i
-1))
300 || !scm_is_eq (SCM_CDR (PSTATE_STACK_REF (pstate
, i
-1)),
301 SCM_CDR (PSTATE_STACK_REF (pstate
, i
))))
307 for (i
= pstate
->top
- 1; 1; --i
)
308 if (scm_is_eq (PSTATE_STACK_REF(pstate
, i
), ref
))
310 scm_putc ('#', port
);
311 scm_intprint (i
- self
, 10, port
);
312 scm_putc ('#', port
);
315 /* Print the name of a symbol. */
318 quote_keywordish_symbols (void)
320 SCM option
= SCM_PRINT_KEYWORD_STYLE
;
322 if (scm_is_false (option
))
324 if (scm_is_eq (option
, sym_reader
))
325 return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE
));
329 #define INITIAL_IDENTIFIER_MASK \
330 (UC_CATEGORY_MASK_Lu | UC_CATEGORY_MASK_Ll | UC_CATEGORY_MASK_Lt \
331 | UC_CATEGORY_MASK_Lm | UC_CATEGORY_MASK_Lo | UC_CATEGORY_MASK_Mn \
332 | UC_CATEGORY_MASK_Nl | UC_CATEGORY_MASK_No | UC_CATEGORY_MASK_Pd \
333 | UC_CATEGORY_MASK_Pc | UC_CATEGORY_MASK_Po | UC_CATEGORY_MASK_Sc \
334 | UC_CATEGORY_MASK_Sm | UC_CATEGORY_MASK_Sk | UC_CATEGORY_MASK_So \
335 | UC_CATEGORY_MASK_Co)
337 #define SUBSEQUENT_IDENTIFIER_MASK \
338 (INITIAL_IDENTIFIER_MASK \
339 | UC_CATEGORY_MASK_Nd | UC_CATEGORY_MASK_Mc | UC_CATEGORY_MASK_Me)
342 symbol_has_extended_read_syntax (SCM sym
)
344 size_t pos
, len
= scm_i_symbol_length (sym
);
347 /* The empty symbol. */
351 c
= scm_i_symbol_ref (sym
, 0);
353 /* Single dot; conflicts with dotted-pair notation. */
354 if (len
== 1 && c
== '.')
357 /* Other initial-character constraints. */
358 if (c
== '\'' || c
== '`' || c
== ',' || c
== '"' || c
== ';' || c
== '#')
361 /* Keywords can be identified by trailing colons too. */
362 if (c
== ':' || scm_i_symbol_ref (sym
, len
- 1) == ':')
363 return quote_keywordish_symbols ();
365 /* Number-ish symbols. */
366 if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym
), 10)))
369 /* Other disallowed first characters. */
370 if (!uc_is_general_category_withtable (c
, INITIAL_IDENTIFIER_MASK
))
373 /* Otherwise, any character that's in the identifier category mask is
374 fine to pass through as-is, provided it's not one of the ASCII
375 delimiters like `;'. */
376 for (pos
= 1; pos
< len
; pos
++)
378 c
= scm_i_symbol_ref (sym
, pos
);
379 if (!uc_is_general_category_withtable (c
, SUBSEQUENT_IDENTIFIER_MASK
))
381 else if (c
== '"' || c
== ';' || c
== '#')
389 print_normal_symbol (SCM sym
, SCM port
)
391 scm_display (scm_symbol_to_string (sym
), port
);
395 print_extended_symbol (SCM sym
, SCM port
)
398 scm_t_string_failed_conversion_handler strategy
;
400 len
= scm_i_symbol_length (sym
);
401 strategy
= PORT_CONVERSION_HANDLER (port
);
403 scm_lfwrite ("#{", 2, port
);
405 for (pos
= 0; pos
< len
; pos
++)
407 scm_t_wchar c
= scm_i_symbol_ref (sym
, pos
);
409 if (uc_is_general_category_withtable (c
,
410 SUBSEQUENT_IDENTIFIER_MASK
411 | UC_CATEGORY_MASK_Zs
))
413 if (!display_character (c
, port
, strategy
)
414 || (c
== '\\' && !display_character (c
, port
, strategy
)))
415 scm_encoding_error ("print_extended_symbol", errno
,
416 "cannot convert to output locale",
417 port
, SCM_MAKE_CHAR (c
));
421 display_string ("\\x", 1, 2, port
, iconveh_question_mark
);
422 scm_intprint (c
, 16, port
);
423 display_character (';', port
, iconveh_question_mark
);
427 scm_lfwrite ("}#", 2, port
);
430 /* FIXME: allow R6RS hex escapes instead of #{...}#. */
432 scm_i_print_symbol_name (SCM sym
, SCM port
)
434 if (symbol_has_extended_read_syntax (sym
))
435 print_extended_symbol (sym
, port
);
437 print_normal_symbol (sym
, port
);
441 scm_print_symbol_name (const char *str
, size_t len
, SCM port
)
443 SCM symbol
= scm_from_locale_symboln (str
, len
);
444 scm_i_print_symbol_name (symbol
, port
);
447 /* Print generally. Handles both write and display according to PSTATE.
449 SCM_GPROC(s_write
, "write", 1, 1, 0, scm_write
, g_write
);
450 SCM_GPROC(s_display
, "display", 1, 1, 0, scm_display
, g_display
);
452 static void iprin1 (SCM exp
, SCM port
, scm_print_state
*pstate
);
455 /* Print a character as an octal or hex escape. */
456 #define PRINT_CHAR_ESCAPE(i, port) \
459 if (!SCM_R6RS_ESCAPES_P) \
460 scm_intprint (i, 8, port); \
463 scm_puts ("x", port); \
464 scm_intprint (i, 16, port); \
471 scm_iprin1 (SCM exp
, SCM port
, scm_print_state
*pstate
)
474 && scm_is_true (scm_memq (exp
, pstate
->highlight_objects
)))
476 scm_display (SCM_PRINT_HIGHLIGHT_PREFIX
, port
);
477 iprin1 (exp
, port
, pstate
);
478 scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX
, port
);
481 iprin1 (exp
, port
, pstate
);
485 iprin1 (SCM exp
, SCM port
, scm_print_state
*pstate
)
487 switch (SCM_ITAG3 (exp
))
491 /* These tc3 tags should never occur in an immediate value. They are
492 * only used in cell types of non-immediates, i. e. the value returned
493 * by SCM_CELL_TYPE (exp) can use these tags.
495 scm_ipruk ("immediate", exp
, port
);
499 scm_intprint (SCM_I_INUM (exp
), 10, port
);
504 if (SCM_WRITINGP (pstate
))
505 write_character (SCM_CHAR (exp
), port
, 0);
508 if (!display_character (SCM_CHAR (exp
), port
,
509 PORT_CONVERSION_HANDLER (port
)))
510 scm_encoding_error (__func__
, errno
,
511 "cannot convert to output locale",
515 else if (SCM_IFLAGP (exp
)
516 && ((size_t) SCM_IFLAGNUM (exp
) < (sizeof iflagnames
/ sizeof (char *))))
518 scm_puts (iflagnames
[SCM_IFLAGNUM (exp
)], port
);
522 /* unknown immediate value */
523 scm_ipruk ("immediate", exp
, port
);
527 switch (SCM_TYP7 (exp
))
531 ENTER_NESTED_DATA (pstate
, exp
, circref
);
532 if (SCM_OBJ_CLASS_FLAGS (exp
) & SCM_CLASSF_GOOPS
)
534 SCM pwps
, print
= pstate
->writingp
? g_write
: g_display
;
535 if (SCM_UNPACK (print
) == 0)
537 pwps
= scm_i_port_with_print_state (port
, pstate
->handle
);
538 pstate
->revealed
= 1;
539 scm_call_generic_2 (print
, exp
, pwps
);
544 scm_print_struct (exp
, port
, pstate
);
546 EXIT_NESTED_DATA (pstate
);
549 case scm_tcs_cons_imcar
:
550 case scm_tcs_cons_nimcar
:
551 ENTER_NESTED_DATA (pstate
, exp
, circref
);
552 scm_iprlist ("(", exp
, ')', port
, pstate
);
553 EXIT_NESTED_DATA (pstate
);
556 print_circref (port
, pstate
, exp
);
559 switch SCM_TYP16 (exp
) {
561 scm_bigprint (exp
, port
, pstate
);
564 scm_print_real (exp
, port
, pstate
);
566 case scm_tc16_complex
:
567 scm_print_complex (exp
, port
, pstate
);
569 case scm_tc16_fraction
:
570 scm_i_print_fraction (exp
, port
, pstate
);
575 if (SCM_WRITINGP (pstate
))
579 display_character ('"', port
, iconveh_question_mark
);
580 len
= scm_i_string_length (exp
);
581 for (i
= 0; i
< len
; ++i
)
582 write_character (scm_i_string_ref (exp
, i
), port
, 1);
584 display_character ('"', port
, iconveh_question_mark
);
585 scm_remember_upto_here_1 (exp
);
591 len
= scm_i_string_length (exp
);
592 printed
= display_string (scm_i_string_data (exp
),
593 scm_i_is_narrow_string (exp
),
595 PORT_CONVERSION_HANDLER (port
));
596 if (SCM_UNLIKELY (printed
< len
))
597 scm_encoding_error (__func__
, errno
,
598 "cannot convert to output locale",
599 port
, scm_c_string_ref (exp
, printed
));
602 scm_remember_upto_here_1 (exp
);
605 if (scm_i_symbol_is_interned (exp
))
607 scm_i_print_symbol_name (exp
, port
);
608 scm_remember_upto_here_1 (exp
);
612 scm_puts ("#<uninterned-symbol ", port
);
613 scm_i_print_symbol_name (exp
, port
);
614 scm_putc (' ', port
);
615 scm_uintprint (SCM_UNPACK (exp
), 16, port
);
616 scm_putc ('>', port
);
619 case scm_tc7_variable
:
620 scm_i_variable_print (exp
, port
, pstate
);
622 case scm_tc7_program
:
623 scm_i_program_print (exp
, port
, pstate
);
625 case scm_tc7_pointer
:
626 scm_i_pointer_print (exp
, port
, pstate
);
628 case scm_tc7_hashtable
:
629 scm_i_hashtable_print (exp
, port
, pstate
);
632 scm_i_fluid_print (exp
, port
, pstate
);
634 case scm_tc7_dynamic_state
:
635 scm_i_dynamic_state_print (exp
, port
, pstate
);
638 scm_i_frame_print (exp
, port
, pstate
);
640 case scm_tc7_objcode
:
641 scm_i_objcode_print (exp
, port
, pstate
);
644 scm_i_vm_print (exp
, port
, pstate
);
646 case scm_tc7_vm_cont
:
647 scm_i_vm_cont_print (exp
, port
, pstate
);
650 scm_i_prompt_print (exp
, port
, pstate
);
652 case scm_tc7_with_fluids
:
653 scm_i_with_fluids_print (exp
, port
, pstate
);
656 ENTER_NESTED_DATA (pstate
, exp
, circref
);
657 scm_i_print_array (exp
, port
, pstate
);
658 EXIT_NESTED_DATA (pstate
);
660 case scm_tc7_bytevector
:
661 scm_i_print_bytevector (exp
, port
, pstate
);
663 case scm_tc7_bitvector
:
664 scm_i_print_bitvector (exp
, port
, pstate
);
667 ENTER_NESTED_DATA (pstate
, exp
, circref
);
668 if (SCM_IS_WHVEC (exp
))
669 scm_puts ("#wh(", port
);
671 scm_puts ("#w(", port
);
672 goto common_vector_printer
;
674 ENTER_NESTED_DATA (pstate
, exp
, circref
);
675 scm_puts ("#(", port
);
676 common_vector_printer
:
679 long last
= SCM_SIMPLE_VECTOR_LENGTH (exp
) - 1;
682 && SCM_SIMPLE_VECTOR_LENGTH (exp
) > pstate
->length
)
684 last
= pstate
->length
- 1;
687 if (SCM_I_WVECTP (exp
))
689 /* Elements of weak vectors may not be accessed via the
690 `SIMPLE_VECTOR_REF ()' macro. */
691 for (i
= 0; i
< last
; ++i
)
693 scm_iprin1 (scm_c_vector_ref (exp
, i
),
695 scm_putc (' ', port
);
700 for (i
= 0; i
< last
; ++i
)
702 scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp
, i
), port
, pstate
);
703 scm_putc (' ', port
);
710 scm_iprin1 (scm_c_vector_ref (exp
, i
), port
, pstate
);
713 scm_puts (" ...", port
);
714 scm_putc (')', port
);
716 EXIT_NESTED_DATA (pstate
);
720 register long i
= SCM_PTOBNUM (exp
);
722 && scm_ptobs
[i
].print
723 && (scm_ptobs
[i
].print
) (exp
, port
, pstate
))
728 ENTER_NESTED_DATA (pstate
, exp
, circref
);
729 SCM_SMOB_DESCRIPTOR (exp
).print (exp
, port
, pstate
);
730 EXIT_NESTED_DATA (pstate
);
733 /* case scm_tcs_closures: */
735 scm_ipruk ("type", exp
, port
);
740 /* Print states are necessary for circular reference safe printing.
741 * They are also expensive to allocate. Therefore print states are
742 * kept in a pool so that they can be reused.
745 /* The PORT argument can also be a print-state/port pair, which will
746 * then be used instead of allocating a new print state. This is
747 * useful for continuing a chain of print calls from Scheme. */
750 scm_prin1 (SCM exp
, SCM port
, int writingp
)
752 SCM handle
= SCM_BOOL_F
; /* Will GC protect the handle whilst unlinked */
754 scm_print_state
*pstate
;
757 /* If PORT is a print-state/port pair, use that. Else create a new
760 if (SCM_PORT_WITH_PS_P (port
))
762 pstate_scm
= SCM_PORT_WITH_PS_PS (port
);
763 port
= SCM_PORT_WITH_PS_PORT (port
);
767 /* First try to allocate a print state from the pool */
768 scm_i_pthread_mutex_lock (&print_state_mutex
);
769 if (!scm_is_null (print_state_pool
))
771 handle
= print_state_pool
;
772 print_state_pool
= SCM_CDR (print_state_pool
);
774 scm_i_pthread_mutex_unlock (&print_state_mutex
);
775 if (scm_is_false (handle
))
776 handle
= scm_list_1 (make_print_state ());
777 pstate_scm
= SCM_CAR (handle
);
780 pstate
= SCM_PRINT_STATE (pstate_scm
);
781 old_writingp
= pstate
->writingp
;
782 pstate
->writingp
= writingp
;
783 scm_iprin1 (exp
, port
, pstate
);
784 pstate
->writingp
= old_writingp
;
786 /* Return print state to pool if it has been created above and
787 hasn't escaped to Scheme. */
789 if (scm_is_true (handle
) && !pstate
->revealed
)
791 scm_i_pthread_mutex_lock (&print_state_mutex
);
792 SCM_SETCDR (handle
, print_state_pool
);
793 print_state_pool
= handle
;
794 scm_i_pthread_mutex_unlock (&print_state_mutex
);
798 /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return
799 the number of bytes of the UTF-8-encoded string. */
801 codepoint_to_utf8 (scm_t_wchar ch
, scm_t_uint8 utf8
[4])
804 scm_t_uint32 codepoint
;
806 codepoint
= (scm_t_uint32
) ch
;
808 if (codepoint
<= 0x7f)
811 utf8
[0] = (scm_t_uint8
) codepoint
;
813 else if (codepoint
<= 0x7ffUL
)
816 utf8
[0] = 0xc0 | (codepoint
>> 6);
817 utf8
[1] = 0x80 | (codepoint
& 0x3f);
819 else if (codepoint
<= 0xffffUL
)
822 utf8
[0] = 0xe0 | (codepoint
>> 12);
823 utf8
[1] = 0x80 | ((codepoint
>> 6) & 0x3f);
824 utf8
[2] = 0x80 | (codepoint
& 0x3f);
829 utf8
[0] = 0xf0 | (codepoint
>> 18);
830 utf8
[1] = 0x80 | ((codepoint
>> 12) & 0x3f);
831 utf8
[2] = 0x80 | ((codepoint
>> 6) & 0x3f);
832 utf8
[3] = 0x80 | (codepoint
& 0x3f);
838 #define STR_REF(s, x) \
840 ? (scm_t_wchar) ((unsigned char *) (s))[x] \
841 : ((scm_t_wchar *) (s))[x])
843 /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is
844 narrow if NARROW_P is true, wide otherwise. Return LEN. */
846 display_string_as_utf8 (const void *str
, int narrow_p
, size_t len
,
851 while (len
> printed
)
854 char *input
, utf8_buf
[256];
856 /* Convert STR to UTF-8. */
857 for (i
= printed
, utf8_len
= 0, input
= utf8_buf
;
858 i
< len
&& utf8_len
+ 4 < sizeof (utf8_buf
);
861 utf8_len
+= codepoint_to_utf8 (STR_REF (str
, i
),
862 (scm_t_uint8
*) input
);
863 input
= utf8_buf
+ utf8_len
;
866 /* INPUT was successfully converted, entirely; print the
868 scm_lfwrite (utf8_buf
, utf8_len
, port
);
869 printed
+= i
- printed
;
872 assert (printed
== len
);
877 /* Convert STR through PORT's output conversion descriptor and write the
878 output to PORT. Return the number of codepoints written. */
880 display_string_using_iconv (const void *str
, int narrow_p
, size_t len
,
882 scm_t_string_failed_conversion_handler strategy
)
885 scm_t_iconv_descriptors
*id
;
886 scm_t_port_internal
*pti
= SCM_PORT_GET_INTERNAL (port
);
888 id
= scm_i_port_iconv_descriptors (port
, SCM_PORT_WRITE
);
890 if (SCM_UNLIKELY (pti
->at_stream_start_for_bom_write
&& len
> 0))
892 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
894 /* Record that we're no longer at stream start. */
895 pti
->at_stream_start_for_bom_write
= 0;
897 pti
->at_stream_start_for_bom_read
= 0;
899 /* Write a BOM if appropriate. */
900 if (SCM_UNLIKELY (c_strcasecmp(pt
->encoding
, "UTF-16") == 0
901 || c_strcasecmp(pt
->encoding
, "UTF-32") == 0))
902 display_character (SCM_UNICODE_BOM
, port
, iconveh_error
);
907 while (len
> printed
)
909 size_t done
, utf8_len
, input_left
, output_left
, i
;
910 size_t codepoints_read
, output_len
;
911 char *input
, *output
;
912 char utf8_buf
[256], encoded_output
[256];
915 /* Convert STR to UTF-8. */
916 for (i
= printed
, utf8_len
= 0, input
= utf8_buf
;
917 i
< len
&& utf8_len
+ 4 < sizeof (utf8_buf
);
920 offsets
[utf8_len
] = i
;
921 utf8_len
+= codepoint_to_utf8 (STR_REF (str
, i
),
922 (scm_t_uint8
*) input
);
923 input
= utf8_buf
+ utf8_len
;
927 input_left
= utf8_len
;
929 output
= encoded_output
;
930 output_left
= sizeof (encoded_output
);
932 done
= iconv (id
->output_cd
, &input
, &input_left
,
933 &output
, &output_left
);
935 output_len
= sizeof (encoded_output
) - output_left
;
937 if (SCM_UNLIKELY (done
== (size_t) -1))
939 int errno_save
= errno
;
941 /* Reset the `iconv' state. */
942 iconv (id
->output_cd
, NULL
, NULL
, NULL
, NULL
);
944 /* Print the OUTPUT_LEN bytes successfully converted. */
945 scm_lfwrite (encoded_output
, output_len
, port
);
947 /* See how many input codepoints these OUTPUT_LEN bytes
949 codepoints_read
= offsets
[input
- utf8_buf
] - printed
;
950 printed
+= codepoints_read
;
952 if (errno_save
== EILSEQ
&&
953 strategy
!= SCM_FAILED_CONVERSION_ERROR
)
955 /* Conversion failed somewhere in INPUT and we want to
956 escape or substitute the offending input character. */
958 if (strategy
== SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE
)
962 /* Find CH, the offending codepoint, and escape it. */
963 ch
= STR_REF (str
, offsets
[input
- utf8_buf
]);
964 write_character_escaped (ch
, 1, port
);
967 /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */
968 display_string ("?", 1, 1, port
, strategy
);
973 /* Something bad happened that we can't handle: bail out. */
978 /* INPUT was successfully converted, entirely; print the
980 scm_lfwrite (encoded_output
, output_len
, port
);
981 codepoints_read
= i
- printed
;
982 printed
+= codepoints_read
;
991 /* Display the LEN codepoints in STR to PORT according to STRATEGY;
992 return the number of codepoints successfully displayed. If NARROW_P,
993 then STR is interpreted as a sequence of `char', denoting a Latin-1
994 string; otherwise it's interpreted as a sequence of
997 display_string (const void *str
, int narrow_p
,
998 size_t len
, SCM port
,
999 scm_t_string_failed_conversion_handler strategy
)
1002 scm_t_port_internal
*pti
;
1004 pti
= SCM_PORT_GET_INTERNAL (port
);
1006 if (pti
->encoding_mode
== SCM_PORT_ENCODING_MODE_UTF8
)
1007 return display_string_as_utf8 (str
, narrow_p
, len
, port
);
1009 return display_string_using_iconv (str
, narrow_p
, len
,
1013 /* Attempt to display CH to PORT according to STRATEGY. Return non-zero
1014 if CH was successfully displayed, zero otherwise (e.g., if it was not
1015 representable in PORT's encoding.) */
1017 display_character (scm_t_wchar ch
, SCM port
,
1018 scm_t_string_failed_conversion_handler strategy
)
1020 return display_string (&ch
, 0, 1, port
, strategy
) == 1;
1023 /* Attempt to pretty-print CH, a combining character, to PORT. Return
1024 zero upon failure, non-zero otherwise. The idea is to print CH above
1025 a dotted circle to make it more visible. */
1027 write_combining_character (scm_t_wchar ch
, SCM port
)
1031 str
[0] = SCM_CODEPOINT_DOTTED_CIRCLE
;
1034 return display_string (str
, 0, 2, port
, iconveh_error
) == 2;
1037 /* Write CH to PORT in its escaped form, using the string escape syntax
1038 if STRING_ESCAPES_P is non-zero. */
1040 write_character_escaped (scm_t_wchar ch
, int string_escapes_p
, SCM port
)
1042 if (string_escapes_p
)
1044 /* Represent CH using the in-string escape syntax. */
1046 static const char hex
[] = "0123456789abcdef";
1047 static const char escapes
[7] = "abtnvfr";
1050 if (ch
>= 0x07 && ch
<= 0x0D && ch
!= 0x0A)
1052 /* Use special escapes for some C0 controls. */
1054 buf
[1] = escapes
[ch
- 0x07];
1055 scm_lfwrite (buf
, 2, port
);
1057 else if (!SCM_R6RS_ESCAPES_P
)
1063 buf
[2] = hex
[ch
/ 16];
1064 buf
[3] = hex
[ch
% 16];
1065 scm_lfwrite (buf
, 4, port
);
1067 else if (ch
<= 0xFFFF)
1071 buf
[2] = hex
[(ch
& 0xF000) >> 12];
1072 buf
[3] = hex
[(ch
& 0xF00) >> 8];
1073 buf
[4] = hex
[(ch
& 0xF0) >> 4];
1074 buf
[5] = hex
[(ch
& 0xF)];
1075 scm_lfwrite (buf
, 6, port
);
1077 else if (ch
> 0xFFFF)
1081 buf
[2] = hex
[(ch
& 0xF00000) >> 20];
1082 buf
[3] = hex
[(ch
& 0xF0000) >> 16];
1083 buf
[4] = hex
[(ch
& 0xF000) >> 12];
1084 buf
[5] = hex
[(ch
& 0xF00) >> 8];
1085 buf
[6] = hex
[(ch
& 0xF0) >> 4];
1086 buf
[7] = hex
[(ch
& 0xF)];
1087 scm_lfwrite (buf
, 8, port
);
1092 /* Print an R6RS variable-length hex escape: "\xNNNN;". */
1093 scm_t_wchar ch2
= ch
;
1103 buf
[i
] = hex
[ch2
& 0xF];
1110 scm_lfwrite (buf
+ i
, 9 - i
, port
);
1115 /* Represent CH using the character escape syntax. */
1118 name
= scm_i_charname (SCM_MAKE_CHAR (ch
));
1120 scm_puts (name
, port
);
1122 PRINT_CHAR_ESCAPE (ch
, port
);
1126 /* Write CH to PORT, escaping it if it's non-graphic or not
1127 representable in PORT's encoding. If STRING_ESCAPES_P is true and CH
1128 needs to be escaped, it is escaped using the in-string escape syntax;
1129 otherwise the character escape syntax is used. */
1131 write_character (scm_t_wchar ch
, SCM port
, int string_escapes_p
)
1134 scm_t_string_failed_conversion_handler strategy
;
1136 strategy
= PORT_CONVERSION_HANDLER (port
);
1138 if (string_escapes_p
)
1140 /* Check if CH deserves special treatment. */
1141 if (ch
== '"' || ch
== '\\')
1143 display_character ('\\', port
, iconveh_question_mark
);
1144 display_character (ch
, port
, strategy
);
1147 else if (ch
== '\n' && SCM_PRINT_ESCAPE_NEWLINES_P
)
1149 display_character ('\\', port
, iconveh_question_mark
);
1150 display_character ('n', port
, strategy
);
1153 else if (ch
== ' ' || ch
== '\n')
1155 display_character (ch
, port
, strategy
);
1161 display_string ("#\\", 1, 2, port
, iconveh_question_mark
);
1163 if (uc_combining_class (ch
) != UC_CCC_NR
)
1164 /* Character is a combining character, so attempt to
1166 printed
= write_combining_character (ch
, port
);
1170 && uc_is_general_category_withtable (ch
,
1171 UC_CATEGORY_MASK_L
|
1172 UC_CATEGORY_MASK_M
|
1173 UC_CATEGORY_MASK_N
|
1174 UC_CATEGORY_MASK_P
|
1175 UC_CATEGORY_MASK_S
))
1176 /* CH is graphic; attempt to display it. */
1177 printed
= display_character (ch
, port
, iconveh_error
);
1180 /* CH isn't graphic or cannot be represented in PORT's encoding. */
1181 write_character_escaped (ch
, string_escapes_p
, port
);
1184 /* Display STR to PORT from START inclusive to END exclusive. */
1186 scm_i_display_substring (SCM str
, size_t start
, size_t end
, SCM port
)
1190 size_t len
, printed
;
1192 buf
= scm_i_string_data (str
);
1194 narrow_p
= scm_i_is_narrow_string (str
);
1195 buf
+= start
* (narrow_p
? sizeof (char) : sizeof (scm_t_wchar
));
1197 printed
= display_string (buf
, narrow_p
, end
- start
, port
,
1198 PORT_CONVERSION_HANDLER (port
));
1200 if (SCM_UNLIKELY (printed
< len
))
1201 scm_encoding_error (__func__
, errno
,
1202 "cannot convert to output locale",
1203 port
, scm_c_string_ref (str
, printed
+ start
));
1207 /* Print an integer.
1211 scm_intprint (scm_t_intmax n
, int radix
, SCM port
)
1213 char num_buf
[SCM_INTBUFLEN
];
1214 scm_lfwrite (num_buf
, scm_iint2str (n
, radix
, num_buf
), port
);
1218 scm_uintprint (scm_t_uintmax n
, int radix
, SCM port
)
1220 char num_buf
[SCM_INTBUFLEN
];
1221 scm_lfwrite (num_buf
, scm_iuint2str (n
, radix
, num_buf
), port
);
1224 /* Print an object of unrecognized type.
1228 scm_ipruk (char *hdr
, SCM ptr
, SCM port
)
1230 scm_puts ("#<unknown-", port
);
1231 scm_puts (hdr
, port
);
1232 if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */
1234 scm_puts (" (0x", port
);
1235 scm_uintprint (SCM_CELL_WORD_0 (ptr
), 16, port
);
1236 scm_puts (" . 0x", port
);
1237 scm_uintprint (SCM_CELL_WORD_1 (ptr
), 16, port
);
1238 scm_puts (") @", port
);
1240 scm_puts (" 0x", port
);
1241 scm_uintprint (SCM_UNPACK (ptr
), 16, port
);
1242 scm_putc ('>', port
);
1249 scm_iprlist (char *hdr
, SCM exp
, int tlr
, SCM port
, scm_print_state
*pstate
)
1251 register SCM hare
, tortoise
;
1252 long floor
= pstate
->top
- 2;
1253 scm_puts (hdr
, port
);
1256 goto fancy_printing
;
1258 /* Run a hare and tortoise so that total time complexity will be
1259 O(depth * N) instead of O(N^2). */
1260 hare
= SCM_CDR (exp
);
1262 while (scm_is_pair (hare
))
1264 if (scm_is_eq (hare
, tortoise
))
1265 goto fancy_printing
;
1266 hare
= SCM_CDR (hare
);
1267 if (!scm_is_pair (hare
))
1269 hare
= SCM_CDR (hare
);
1270 tortoise
= SCM_CDR (tortoise
);
1273 /* No cdr cycles intrinsic to this list */
1274 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
1275 for (exp
= SCM_CDR (exp
); scm_is_pair (exp
); exp
= SCM_CDR (exp
))
1279 for (i
= floor
; i
>= 0; --i
)
1280 if (scm_is_eq (PSTATE_STACK_REF(pstate
, i
), exp
))
1282 PUSH_REF (pstate
, exp
);
1283 scm_putc (' ', port
);
1285 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
1287 if (!SCM_NULL_OR_NIL_P (exp
))
1289 scm_puts (" . ", port
);
1290 scm_iprin1 (exp
, port
, pstate
);
1294 scm_putc (tlr
, port
);
1295 pstate
->top
= floor
+ 2;
1300 long n
= pstate
->length
;
1302 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
1303 exp
= SCM_CDR (exp
); --n
;
1304 for (; scm_is_pair (exp
); exp
= SCM_CDR (exp
))
1306 register unsigned long i
;
1308 for (i
= 0; i
< pstate
->top
; ++i
)
1309 if (scm_is_eq (PSTATE_STACK_REF(pstate
, i
), exp
))
1315 scm_puts (" ...", port
);
1321 PUSH_REF(pstate
, exp
);
1322 ++pstate
->list_offset
;
1323 scm_putc (' ', port
);
1325 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
1328 if (!SCM_NULL_OR_NIL_P (exp
))
1330 scm_puts (" . ", port
);
1331 scm_iprin1 (exp
, port
, pstate
);
1334 pstate
->list_offset
-= pstate
->top
- floor
- 2;
1338 pstate
->list_offset
-= pstate
->top
- floor
- 2;
1341 scm_puts (" . ", port
);
1342 print_circref (port
, pstate
, exp
);
1349 scm_valid_oport_value_p (SCM val
)
1351 return (SCM_OPOUTPORTP (val
)
1352 || (SCM_PORT_WITH_PS_P (val
)
1353 && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val
))));
1356 /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */
1359 scm_write (SCM obj
, SCM port
)
1361 if (SCM_UNBNDP (port
))
1362 port
= scm_current_output_port ();
1364 SCM_ASSERT (scm_valid_oport_value_p (port
), port
, SCM_ARG2
, s_write
);
1366 scm_prin1 (obj
, port
, 1);
1367 return SCM_UNSPECIFIED
;
1371 /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */
1374 scm_display (SCM obj
, SCM port
)
1376 if (SCM_UNBNDP (port
))
1377 port
= scm_current_output_port ();
1379 SCM_ASSERT (scm_valid_oport_value_p (port
), port
, SCM_ARG2
, s_display
);
1381 scm_prin1 (obj
, port
, 0);
1382 return SCM_UNSPECIFIED
;
1386 SCM_DEFINE (scm_simple_format
, "simple-format", 2, 0, 1,
1387 (SCM destination
, SCM message
, SCM args
),
1388 "Write @var{message} to @var{destination}, defaulting to\n"
1389 "the current output port.\n"
1390 "@var{message} can contain @code{~A} (was @code{%s}) and\n"
1391 "@code{~S} (was @code{%S}) escapes. When printed,\n"
1392 "the escapes are replaced with corresponding members of\n"
1394 "@code{~A} formats using @code{display} and @code{~S} formats\n"
1395 "using @code{write}.\n"
1396 "If @var{destination} is @code{#t}, then use the current output\n"
1397 "port, if @var{destination} is @code{#f}, then return a string\n"
1398 "containing the formatted text. Does not add a trailing newline.")
1399 #define FUNC_NAME s_scm_simple_format
1401 SCM port
, answer
= SCM_UNSPECIFIED
;
1402 int fReturnString
= 0;
1404 size_t start
, p
, end
;
1406 if (scm_is_eq (destination
, SCM_BOOL_T
))
1408 destination
= port
= scm_current_output_port ();
1410 else if (scm_is_false (destination
))
1413 port
= scm_mkstrport (SCM_INUM0
, SCM_BOOL_F
,
1414 SCM_OPN
| SCM_WRTNG
,
1420 SCM_VALIDATE_OPORT_VALUE (1, destination
);
1421 port
= SCM_COERCE_OUTPORT (destination
);
1423 SCM_VALIDATE_STRING (2, message
);
1424 SCM_VALIDATE_REST_ARGUMENT (args
);
1428 end
= scm_i_string_length (message
);
1429 for (p
= start
; p
!= end
; ++p
)
1430 if (scm_i_string_ref (message
, p
) == '~')
1435 switch (scm_i_string_ref (message
, p
))
1444 scm_lfwrite_substr (message
, start
, p
, port
);
1448 scm_lfwrite_substr (message
, start
, p
- 1, port
);
1453 SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead",
1454 scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message
, p
))));
1459 if (!scm_is_pair (args
))
1460 SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A",
1461 scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message
, p
))));
1463 scm_lfwrite_substr (message
, start
, p
- 1, port
);
1464 /* we pass destination here */
1465 scm_prin1 (SCM_CAR (args
), destination
, writingp
);
1466 args
= SCM_CDR (args
);
1470 scm_lfwrite_substr (message
, start
, p
, port
);
1471 if (!scm_is_eq (args
, SCM_EOL
))
1472 SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments",
1473 scm_list_1 (scm_length (args
)));
1476 answer
= scm_strport_to_string (destination
);
1478 return scm_return_first (answer
, message
);
1483 SCM_DEFINE (scm_newline
, "newline", 0, 1, 0,
1485 "Send a newline to @var{port}.\n"
1486 "If @var{port} is omitted, send to the current output port.")
1487 #define FUNC_NAME s_scm_newline
1489 if (SCM_UNBNDP (port
))
1490 port
= scm_current_output_port ();
1492 SCM_VALIDATE_OPORT_VALUE (1, port
);
1494 scm_putc ('\n', SCM_COERCE_OUTPORT (port
));
1495 return SCM_UNSPECIFIED
;
1499 SCM_DEFINE (scm_write_char
, "write-char", 1, 1, 0,
1500 (SCM chr
, SCM port
),
1501 "Send character @var{chr} to @var{port}.")
1502 #define FUNC_NAME s_scm_write_char
1504 if (SCM_UNBNDP (port
))
1505 port
= scm_current_output_port ();
1507 SCM_VALIDATE_CHAR (1, chr
);
1508 SCM_VALIDATE_OPORT_VALUE (2, port
);
1510 port
= SCM_COERCE_OUTPORT (port
);
1511 if (!display_character (SCM_CHAR (chr
), port
,
1512 PORT_CONVERSION_HANDLER (port
)))
1513 scm_encoding_error (__func__
, errno
,
1514 "cannot convert to output locale",
1517 return SCM_UNSPECIFIED
;
1523 /* Call back to Scheme code to do the printing of special objects
1524 * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob
1525 * containing PORT and PSTATE. This object can be used as the port for
1526 * display/write etc to continue the current print chain. The REVEALED
1527 * field of PSTATE is set to true to indicate that the print state has
1528 * escaped to Scheme and thus has to be freed by the GC.
1531 scm_t_bits scm_tc16_port_with_ps
;
1533 /* Print exactly as the port itself would */
1536 port_with_ps_print (SCM obj
, SCM port
, scm_print_state
*pstate
)
1538 obj
= SCM_PORT_WITH_PS_PORT (obj
);
1539 return scm_ptobs
[SCM_PTOBNUM (obj
)].print (obj
, port
, pstate
);
1543 scm_printer_apply (SCM proc
, SCM exp
, SCM port
, scm_print_state
*pstate
)
1545 pstate
->revealed
= 1;
1546 return scm_call_2 (proc
, exp
,
1547 scm_i_port_with_print_state (port
, pstate
->handle
));
1550 SCM_DEFINE (scm_port_with_print_state
, "port-with-print-state", 1, 1, 0,
1551 (SCM port
, SCM pstate
),
1552 "Create a new port which behaves like @var{port}, but with an\n"
1553 "included print state @var{pstate}. @var{pstate} is optional.\n"
1554 "If @var{pstate} isn't supplied and @var{port} already has\n"
1555 "a print state, the old print state is reused.")
1556 #define FUNC_NAME s_scm_port_with_print_state
1558 SCM_VALIDATE_OPORT_VALUE (1, port
);
1559 if (!SCM_UNBNDP (pstate
))
1560 SCM_VALIDATE_PRINTSTATE (2, pstate
);
1561 return scm_i_port_with_print_state (port
, pstate
);
1565 SCM_DEFINE (scm_get_print_state
, "get-print-state", 1, 0, 0,
1567 "Return the print state of the port @var{port}. If @var{port}\n"
1568 "has no associated print state, @code{#f} is returned.")
1569 #define FUNC_NAME s_scm_get_print_state
1571 if (SCM_PORT_WITH_PS_P (port
))
1572 return SCM_PORT_WITH_PS_PS (port
);
1573 if (SCM_OUTPUT_PORT_P (port
))
1575 SCM_WRONG_TYPE_ARG (1, port
);
1586 scm_gc_register_root (&print_state_pool
);
1587 scm_gc_register_root (&scm_print_state_vtable
);
1588 type
= scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT
),
1590 scm_set_struct_vtable_name_x (type
, scm_from_latin1_symbol ("print-state"));
1591 scm_print_state_vtable
= type
;
1593 /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */
1594 scm_tc16_port_with_ps
= scm_make_smob_type (0, 0);
1595 scm_set_smob_print (scm_tc16_port_with_ps
, port_with_ps_print
);
1597 #include "libguile/print.x"
1599 scm_init_opts (scm_print_options
, scm_print_opts
);
1600 scm_print_opts
[SCM_PRINT_HIGHLIGHT_PREFIX_I
].val
=
1601 SCM_UNPACK (scm_from_locale_string ("{"));
1602 scm_print_opts
[SCM_PRINT_HIGHLIGHT_SUFFIX_I
].val
=
1603 SCM_UNPACK (scm_from_locale_string ("}"));
1604 scm_print_opts
[SCM_PRINT_KEYWORD_STYLE_I
].val
= SCM_UNPACK (sym_reader
);