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 scm_encoding_error ("print_extended_symbol", errno
,
415 "cannot convert to output locale",
416 port
, SCM_MAKE_CHAR (c
));
420 display_string ("\\x", 1, 2, port
, iconveh_question_mark
);
421 scm_intprint (c
, 16, port
);
422 display_character (';', port
, iconveh_question_mark
);
426 scm_lfwrite ("}#", 2, port
);
429 /* FIXME: allow R6RS hex escapes instead of #{...}#. */
431 scm_i_print_symbol_name (SCM sym
, SCM port
)
433 if (symbol_has_extended_read_syntax (sym
))
434 print_extended_symbol (sym
, port
);
436 print_normal_symbol (sym
, port
);
440 scm_print_symbol_name (const char *str
, size_t len
, SCM port
)
442 SCM symbol
= scm_from_locale_symboln (str
, len
);
443 scm_i_print_symbol_name (symbol
, port
);
446 /* Print generally. Handles both write and display according to PSTATE.
448 SCM_GPROC(s_write
, "write", 1, 1, 0, scm_write
, g_write
);
449 SCM_GPROC(s_display
, "display", 1, 1, 0, scm_display
, g_display
);
451 static void iprin1 (SCM exp
, SCM port
, scm_print_state
*pstate
);
454 /* Print a character as an octal or hex escape. */
455 #define PRINT_CHAR_ESCAPE(i, port) \
458 if (!SCM_R6RS_ESCAPES_P) \
459 scm_intprint (i, 8, port); \
462 scm_puts ("x", port); \
463 scm_intprint (i, 16, port); \
470 scm_iprin1 (SCM exp
, SCM port
, scm_print_state
*pstate
)
473 && scm_is_true (scm_memq (exp
, pstate
->highlight_objects
)))
475 scm_display (SCM_PRINT_HIGHLIGHT_PREFIX
, port
);
476 iprin1 (exp
, port
, pstate
);
477 scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX
, port
);
480 iprin1 (exp
, port
, pstate
);
484 iprin1 (SCM exp
, SCM port
, scm_print_state
*pstate
)
486 switch (SCM_ITAG3 (exp
))
490 /* These tc3 tags should never occur in an immediate value. They are
491 * only used in cell types of non-immediates, i. e. the value returned
492 * by SCM_CELL_TYPE (exp) can use these tags.
494 scm_ipruk ("immediate", exp
, port
);
498 scm_intprint (SCM_I_INUM (exp
), 10, port
);
503 if (SCM_WRITINGP (pstate
))
504 write_character (SCM_CHAR (exp
), port
, 0);
507 if (!display_character (SCM_CHAR (exp
), port
,
508 PORT_CONVERSION_HANDLER (port
)))
509 scm_encoding_error (__func__
, errno
,
510 "cannot convert to output locale",
514 else if (SCM_IFLAGP (exp
)
515 && ((size_t) SCM_IFLAGNUM (exp
) < (sizeof iflagnames
/ sizeof (char *))))
517 scm_puts (iflagnames
[SCM_IFLAGNUM (exp
)], port
);
521 /* unknown immediate value */
522 scm_ipruk ("immediate", exp
, port
);
526 switch (SCM_TYP7 (exp
))
530 ENTER_NESTED_DATA (pstate
, exp
, circref
);
531 if (SCM_OBJ_CLASS_FLAGS (exp
) & SCM_CLASSF_GOOPS
)
533 SCM pwps
, print
= pstate
->writingp
? g_write
: g_display
;
534 if (SCM_UNPACK (print
) == 0)
536 pwps
= scm_i_port_with_print_state (port
, pstate
->handle
);
537 pstate
->revealed
= 1;
538 scm_call_generic_2 (print
, exp
, pwps
);
543 scm_print_struct (exp
, port
, pstate
);
545 EXIT_NESTED_DATA (pstate
);
548 case scm_tcs_cons_imcar
:
549 case scm_tcs_cons_nimcar
:
550 ENTER_NESTED_DATA (pstate
, exp
, circref
);
551 scm_iprlist ("(", exp
, ')', port
, pstate
);
552 EXIT_NESTED_DATA (pstate
);
555 print_circref (port
, pstate
, exp
);
558 switch SCM_TYP16 (exp
) {
560 scm_bigprint (exp
, port
, pstate
);
563 scm_print_real (exp
, port
, pstate
);
565 case scm_tc16_complex
:
566 scm_print_complex (exp
, port
, pstate
);
568 case scm_tc16_fraction
:
569 scm_i_print_fraction (exp
, port
, pstate
);
574 if (SCM_WRITINGP (pstate
))
578 display_character ('"', port
, iconveh_question_mark
);
579 len
= scm_i_string_length (exp
);
580 for (i
= 0; i
< len
; ++i
)
581 write_character (scm_i_string_ref (exp
, i
), port
, 1);
583 display_character ('"', port
, iconveh_question_mark
);
584 scm_remember_upto_here_1 (exp
);
590 len
= scm_i_string_length (exp
);
591 printed
= display_string (scm_i_string_data (exp
),
592 scm_i_is_narrow_string (exp
),
594 PORT_CONVERSION_HANDLER (port
));
595 if (SCM_UNLIKELY (printed
< len
))
596 scm_encoding_error (__func__
, errno
,
597 "cannot convert to output locale",
598 port
, scm_c_string_ref (exp
, printed
));
601 scm_remember_upto_here_1 (exp
);
604 if (scm_i_symbol_is_interned (exp
))
606 scm_i_print_symbol_name (exp
, port
);
607 scm_remember_upto_here_1 (exp
);
611 scm_puts ("#<uninterned-symbol ", port
);
612 scm_i_print_symbol_name (exp
, port
);
613 scm_putc (' ', port
);
614 scm_uintprint (SCM_UNPACK (exp
), 16, port
);
615 scm_putc ('>', port
);
618 case scm_tc7_variable
:
619 scm_i_variable_print (exp
, port
, pstate
);
621 case scm_tc7_program
:
622 scm_i_program_print (exp
, port
, pstate
);
624 case scm_tc7_pointer
:
625 scm_i_pointer_print (exp
, port
, pstate
);
627 case scm_tc7_hashtable
:
628 scm_i_hashtable_print (exp
, port
, pstate
);
631 scm_i_fluid_print (exp
, port
, pstate
);
633 case scm_tc7_dynamic_state
:
634 scm_i_dynamic_state_print (exp
, port
, pstate
);
637 scm_i_frame_print (exp
, port
, pstate
);
639 case scm_tc7_objcode
:
640 scm_i_objcode_print (exp
, port
, pstate
);
643 scm_i_vm_print (exp
, port
, pstate
);
645 case scm_tc7_vm_cont
:
646 scm_i_vm_cont_print (exp
, port
, pstate
);
649 scm_i_prompt_print (exp
, port
, pstate
);
651 case scm_tc7_with_fluids
:
652 scm_i_with_fluids_print (exp
, port
, pstate
);
655 ENTER_NESTED_DATA (pstate
, exp
, circref
);
656 scm_i_print_array (exp
, port
, pstate
);
657 EXIT_NESTED_DATA (pstate
);
659 case scm_tc7_bytevector
:
660 scm_i_print_bytevector (exp
, port
, pstate
);
662 case scm_tc7_bitvector
:
663 scm_i_print_bitvector (exp
, port
, pstate
);
666 ENTER_NESTED_DATA (pstate
, exp
, circref
);
667 if (SCM_IS_WHVEC (exp
))
668 scm_puts ("#wh(", port
);
670 scm_puts ("#w(", port
);
671 goto common_vector_printer
;
673 ENTER_NESTED_DATA (pstate
, exp
, circref
);
674 scm_puts ("#(", port
);
675 common_vector_printer
:
678 long last
= SCM_SIMPLE_VECTOR_LENGTH (exp
) - 1;
681 && SCM_SIMPLE_VECTOR_LENGTH (exp
) > pstate
->length
)
683 last
= pstate
->length
- 1;
686 if (SCM_I_WVECTP (exp
))
688 /* Elements of weak vectors may not be accessed via the
689 `SIMPLE_VECTOR_REF ()' macro. */
690 for (i
= 0; i
< last
; ++i
)
692 scm_iprin1 (scm_c_vector_ref (exp
, i
),
694 scm_putc (' ', port
);
699 for (i
= 0; i
< last
; ++i
)
701 scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp
, i
), port
, pstate
);
702 scm_putc (' ', port
);
709 scm_iprin1 (scm_c_vector_ref (exp
, i
), port
, pstate
);
712 scm_puts (" ...", port
);
713 scm_putc (')', port
);
715 EXIT_NESTED_DATA (pstate
);
719 register long i
= SCM_PTOBNUM (exp
);
721 && scm_ptobs
[i
].print
722 && (scm_ptobs
[i
].print
) (exp
, port
, pstate
))
727 ENTER_NESTED_DATA (pstate
, exp
, circref
);
728 SCM_SMOB_DESCRIPTOR (exp
).print (exp
, port
, pstate
);
729 EXIT_NESTED_DATA (pstate
);
732 /* case scm_tcs_closures: */
734 scm_ipruk ("type", exp
, port
);
739 /* Print states are necessary for circular reference safe printing.
740 * They are also expensive to allocate. Therefore print states are
741 * kept in a pool so that they can be reused.
744 /* The PORT argument can also be a print-state/port pair, which will
745 * then be used instead of allocating a new print state. This is
746 * useful for continuing a chain of print calls from Scheme. */
749 scm_prin1 (SCM exp
, SCM port
, int writingp
)
751 SCM handle
= SCM_BOOL_F
; /* Will GC protect the handle whilst unlinked */
753 scm_print_state
*pstate
;
756 /* If PORT is a print-state/port pair, use that. Else create a new
759 if (SCM_PORT_WITH_PS_P (port
))
761 pstate_scm
= SCM_PORT_WITH_PS_PS (port
);
762 port
= SCM_PORT_WITH_PS_PORT (port
);
766 /* First try to allocate a print state from the pool */
767 scm_i_pthread_mutex_lock (&print_state_mutex
);
768 if (!scm_is_null (print_state_pool
))
770 handle
= print_state_pool
;
771 print_state_pool
= SCM_CDR (print_state_pool
);
773 scm_i_pthread_mutex_unlock (&print_state_mutex
);
774 if (scm_is_false (handle
))
775 handle
= scm_list_1 (make_print_state ());
776 pstate_scm
= SCM_CAR (handle
);
779 pstate
= SCM_PRINT_STATE (pstate_scm
);
780 old_writingp
= pstate
->writingp
;
781 pstate
->writingp
= writingp
;
782 scm_iprin1 (exp
, port
, pstate
);
783 pstate
->writingp
= old_writingp
;
785 /* Return print state to pool if it has been created above and
786 hasn't escaped to Scheme. */
788 if (scm_is_true (handle
) && !pstate
->revealed
)
790 scm_i_pthread_mutex_lock (&print_state_mutex
);
791 SCM_SETCDR (handle
, print_state_pool
);
792 print_state_pool
= handle
;
793 scm_i_pthread_mutex_unlock (&print_state_mutex
);
797 /* Convert codepoint CH to UTF-8 and store the result in UTF8. Return
798 the number of bytes of the UTF-8-encoded string. */
800 codepoint_to_utf8 (scm_t_wchar ch
, scm_t_uint8 utf8
[4])
803 scm_t_uint32 codepoint
;
805 codepoint
= (scm_t_uint32
) ch
;
807 if (codepoint
<= 0x7f)
810 utf8
[0] = (scm_t_uint8
) codepoint
;
812 else if (codepoint
<= 0x7ffUL
)
815 utf8
[0] = 0xc0 | (codepoint
>> 6);
816 utf8
[1] = 0x80 | (codepoint
& 0x3f);
818 else if (codepoint
<= 0xffffUL
)
821 utf8
[0] = 0xe0 | (codepoint
>> 12);
822 utf8
[1] = 0x80 | ((codepoint
>> 6) & 0x3f);
823 utf8
[2] = 0x80 | (codepoint
& 0x3f);
828 utf8
[0] = 0xf0 | (codepoint
>> 18);
829 utf8
[1] = 0x80 | ((codepoint
>> 12) & 0x3f);
830 utf8
[2] = 0x80 | ((codepoint
>> 6) & 0x3f);
831 utf8
[3] = 0x80 | (codepoint
& 0x3f);
837 #define STR_REF(s, x) \
839 ? (scm_t_wchar) ((unsigned char *) (s))[x] \
840 : ((scm_t_wchar *) (s))[x])
842 /* Write STR to PORT as UTF-8. STR is a LEN-codepoint string; it is
843 narrow if NARROW_P is true, wide otherwise. Return LEN. */
845 display_string_as_utf8 (const void *str
, int narrow_p
, size_t len
,
850 while (len
> printed
)
853 char *input
, utf8_buf
[256];
855 /* Convert STR to UTF-8. */
856 for (i
= printed
, utf8_len
= 0, input
= utf8_buf
;
857 i
< len
&& utf8_len
+ 4 < sizeof (utf8_buf
);
860 utf8_len
+= codepoint_to_utf8 (STR_REF (str
, i
),
861 (scm_t_uint8
*) input
);
862 input
= utf8_buf
+ utf8_len
;
865 /* INPUT was successfully converted, entirely; print the
867 scm_lfwrite (utf8_buf
, utf8_len
, port
);
868 printed
+= i
- printed
;
871 assert (printed
== len
);
876 /* Convert STR through PORT's output conversion descriptor and write the
877 output to PORT. Return the number of codepoints written. */
879 display_string_using_iconv (const void *str
, int narrow_p
, size_t len
,
881 scm_t_string_failed_conversion_handler strategy
)
884 scm_t_iconv_descriptors
*id
;
885 scm_t_port_internal
*pti
= SCM_PORT_GET_INTERNAL (port
);
887 id
= scm_i_port_iconv_descriptors (port
, SCM_PORT_WRITE
);
889 if (SCM_UNLIKELY (pti
->at_stream_start_for_bom_write
&& len
> 0))
891 scm_t_port
*pt
= SCM_PTAB_ENTRY (port
);
893 /* Record that we're no longer at stream start. */
894 pti
->at_stream_start_for_bom_write
= 0;
896 pti
->at_stream_start_for_bom_read
= 0;
898 /* Write a BOM if appropriate. */
899 if (SCM_UNLIKELY (c_strcasecmp(pt
->encoding
, "UTF-16") == 0
900 || c_strcasecmp(pt
->encoding
, "UTF-32") == 0))
901 display_character (SCM_UNICODE_BOM
, port
, iconveh_error
);
906 while (len
> printed
)
908 size_t done
, utf8_len
, input_left
, output_left
, i
;
909 size_t codepoints_read
, output_len
;
910 char *input
, *output
;
911 char utf8_buf
[256], encoded_output
[256];
914 /* Convert STR to UTF-8. */
915 for (i
= printed
, utf8_len
= 0, input
= utf8_buf
;
916 i
< len
&& utf8_len
+ 4 < sizeof (utf8_buf
);
919 offsets
[utf8_len
] = i
;
920 utf8_len
+= codepoint_to_utf8 (STR_REF (str
, i
),
921 (scm_t_uint8
*) input
);
922 input
= utf8_buf
+ utf8_len
;
926 input_left
= utf8_len
;
928 output
= encoded_output
;
929 output_left
= sizeof (encoded_output
);
931 done
= iconv (id
->output_cd
, &input
, &input_left
,
932 &output
, &output_left
);
934 output_len
= sizeof (encoded_output
) - output_left
;
936 if (SCM_UNLIKELY (done
== (size_t) -1))
938 int errno_save
= errno
;
940 /* Reset the `iconv' state. */
941 iconv (id
->output_cd
, NULL
, NULL
, NULL
, NULL
);
943 /* Print the OUTPUT_LEN bytes successfully converted. */
944 scm_lfwrite (encoded_output
, output_len
, port
);
946 /* See how many input codepoints these OUTPUT_LEN bytes
948 codepoints_read
= offsets
[input
- utf8_buf
] - printed
;
949 printed
+= codepoints_read
;
951 if (errno_save
== EILSEQ
&&
952 strategy
!= SCM_FAILED_CONVERSION_ERROR
)
954 /* Conversion failed somewhere in INPUT and we want to
955 escape or substitute the offending input character. */
957 if (strategy
== SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE
)
961 /* Find CH, the offending codepoint, and escape it. */
962 ch
= STR_REF (str
, offsets
[input
- utf8_buf
]);
963 write_character_escaped (ch
, 1, port
);
966 /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */
967 display_string ("?", 1, 1, port
, strategy
);
972 /* Something bad happened that we can't handle: bail out. */
977 /* INPUT was successfully converted, entirely; print the
979 scm_lfwrite (encoded_output
, output_len
, port
);
980 codepoints_read
= i
- printed
;
981 printed
+= codepoints_read
;
990 /* Display the LEN codepoints in STR to PORT according to STRATEGY;
991 return the number of codepoints successfully displayed. If NARROW_P,
992 then STR is interpreted as a sequence of `char', denoting a Latin-1
993 string; otherwise it's interpreted as a sequence of
996 display_string (const void *str
, int narrow_p
,
997 size_t len
, SCM port
,
998 scm_t_string_failed_conversion_handler strategy
)
1001 scm_t_port_internal
*pti
;
1003 pti
= SCM_PORT_GET_INTERNAL (port
);
1005 if (pti
->encoding_mode
== SCM_PORT_ENCODING_MODE_UTF8
)
1006 return display_string_as_utf8 (str
, narrow_p
, len
, port
);
1008 return display_string_using_iconv (str
, narrow_p
, len
,
1012 /* Attempt to display CH to PORT according to STRATEGY. Return non-zero
1013 if CH was successfully displayed, zero otherwise (e.g., if it was not
1014 representable in PORT's encoding.) */
1016 display_character (scm_t_wchar ch
, SCM port
,
1017 scm_t_string_failed_conversion_handler strategy
)
1019 return display_string (&ch
, 0, 1, port
, strategy
) == 1;
1022 /* Attempt to pretty-print CH, a combining character, to PORT. Return
1023 zero upon failure, non-zero otherwise. The idea is to print CH above
1024 a dotted circle to make it more visible. */
1026 write_combining_character (scm_t_wchar ch
, SCM port
)
1030 str
[0] = SCM_CODEPOINT_DOTTED_CIRCLE
;
1033 return display_string (str
, 0, 2, port
, iconveh_error
) == 2;
1036 /* Write CH to PORT in its escaped form, using the string escape syntax
1037 if STRING_ESCAPES_P is non-zero. */
1039 write_character_escaped (scm_t_wchar ch
, int string_escapes_p
, SCM port
)
1041 if (string_escapes_p
)
1043 /* Represent CH using the in-string escape syntax. */
1045 static const char hex
[] = "0123456789abcdef";
1046 static const char escapes
[7] = "abtnvfr";
1049 if (ch
>= 0x07 && ch
<= 0x0D && ch
!= 0x0A)
1051 /* Use special escapes for some C0 controls. */
1053 buf
[1] = escapes
[ch
- 0x07];
1054 scm_lfwrite (buf
, 2, port
);
1056 else if (!SCM_R6RS_ESCAPES_P
)
1062 buf
[2] = hex
[ch
/ 16];
1063 buf
[3] = hex
[ch
% 16];
1064 scm_lfwrite (buf
, 4, port
);
1066 else if (ch
<= 0xFFFF)
1070 buf
[2] = hex
[(ch
& 0xF000) >> 12];
1071 buf
[3] = hex
[(ch
& 0xF00) >> 8];
1072 buf
[4] = hex
[(ch
& 0xF0) >> 4];
1073 buf
[5] = hex
[(ch
& 0xF)];
1074 scm_lfwrite (buf
, 6, port
);
1076 else if (ch
> 0xFFFF)
1080 buf
[2] = hex
[(ch
& 0xF00000) >> 20];
1081 buf
[3] = hex
[(ch
& 0xF0000) >> 16];
1082 buf
[4] = hex
[(ch
& 0xF000) >> 12];
1083 buf
[5] = hex
[(ch
& 0xF00) >> 8];
1084 buf
[6] = hex
[(ch
& 0xF0) >> 4];
1085 buf
[7] = hex
[(ch
& 0xF)];
1086 scm_lfwrite (buf
, 8, port
);
1091 /* Print an R6RS variable-length hex escape: "\xNNNN;". */
1092 scm_t_wchar ch2
= ch
;
1102 buf
[i
] = hex
[ch2
& 0xF];
1109 scm_lfwrite (buf
+ i
, 9 - i
, port
);
1114 /* Represent CH using the character escape syntax. */
1117 name
= scm_i_charname (SCM_MAKE_CHAR (ch
));
1119 scm_puts (name
, port
);
1121 PRINT_CHAR_ESCAPE (ch
, port
);
1125 /* Write CH to PORT, escaping it if it's non-graphic or not
1126 representable in PORT's encoding. If STRING_ESCAPES_P is true and CH
1127 needs to be escaped, it is escaped using the in-string escape syntax;
1128 otherwise the character escape syntax is used. */
1130 write_character (scm_t_wchar ch
, SCM port
, int string_escapes_p
)
1133 scm_t_string_failed_conversion_handler strategy
;
1135 strategy
= PORT_CONVERSION_HANDLER (port
);
1137 if (string_escapes_p
)
1139 /* Check if CH deserves special treatment. */
1140 if (ch
== '"' || ch
== '\\')
1142 display_character ('\\', port
, iconveh_question_mark
);
1143 display_character (ch
, port
, strategy
);
1146 else if (ch
== '\n' && SCM_PRINT_ESCAPE_NEWLINES_P
)
1148 display_character ('\\', port
, iconveh_question_mark
);
1149 display_character ('n', port
, strategy
);
1152 else if (ch
== ' ' || ch
== '\n')
1154 display_character (ch
, port
, strategy
);
1160 display_string ("#\\", 1, 2, port
, iconveh_question_mark
);
1162 if (uc_combining_class (ch
) != UC_CCC_NR
)
1163 /* Character is a combining character, so attempt to
1165 printed
= write_combining_character (ch
, port
);
1169 && uc_is_general_category_withtable (ch
,
1170 UC_CATEGORY_MASK_L
|
1171 UC_CATEGORY_MASK_M
|
1172 UC_CATEGORY_MASK_N
|
1173 UC_CATEGORY_MASK_P
|
1174 UC_CATEGORY_MASK_S
))
1175 /* CH is graphic; attempt to display it. */
1176 printed
= display_character (ch
, port
, iconveh_error
);
1179 /* CH isn't graphic or cannot be represented in PORT's encoding. */
1180 write_character_escaped (ch
, string_escapes_p
, port
);
1183 /* Display STR to PORT from START inclusive to END exclusive. */
1185 scm_i_display_substring (SCM str
, size_t start
, size_t end
, SCM port
)
1189 size_t len
, printed
;
1191 buf
= scm_i_string_data (str
);
1193 narrow_p
= scm_i_is_narrow_string (str
);
1194 buf
+= start
* (narrow_p
? sizeof (char) : sizeof (scm_t_wchar
));
1196 printed
= display_string (buf
, narrow_p
, end
- start
, port
,
1197 PORT_CONVERSION_HANDLER (port
));
1199 if (SCM_UNLIKELY (printed
< len
))
1200 scm_encoding_error (__func__
, errno
,
1201 "cannot convert to output locale",
1202 port
, scm_c_string_ref (str
, printed
+ start
));
1206 /* Print an integer.
1210 scm_intprint (scm_t_intmax n
, int radix
, SCM port
)
1212 char num_buf
[SCM_INTBUFLEN
];
1213 scm_lfwrite (num_buf
, scm_iint2str (n
, radix
, num_buf
), port
);
1217 scm_uintprint (scm_t_uintmax n
, int radix
, SCM port
)
1219 char num_buf
[SCM_INTBUFLEN
];
1220 scm_lfwrite (num_buf
, scm_iuint2str (n
, radix
, num_buf
), port
);
1223 /* Print an object of unrecognized type.
1227 scm_ipruk (char *hdr
, SCM ptr
, SCM port
)
1229 scm_puts ("#<unknown-", port
);
1230 scm_puts (hdr
, port
);
1231 if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */
1233 scm_puts (" (0x", port
);
1234 scm_uintprint (SCM_CELL_WORD_0 (ptr
), 16, port
);
1235 scm_puts (" . 0x", port
);
1236 scm_uintprint (SCM_CELL_WORD_1 (ptr
), 16, port
);
1237 scm_puts (") @", port
);
1239 scm_puts (" 0x", port
);
1240 scm_uintprint (SCM_UNPACK (ptr
), 16, port
);
1241 scm_putc ('>', port
);
1248 scm_iprlist (char *hdr
, SCM exp
, int tlr
, SCM port
, scm_print_state
*pstate
)
1250 register SCM hare
, tortoise
;
1251 long floor
= pstate
->top
- 2;
1252 scm_puts (hdr
, port
);
1255 goto fancy_printing
;
1257 /* Run a hare and tortoise so that total time complexity will be
1258 O(depth * N) instead of O(N^2). */
1259 hare
= SCM_CDR (exp
);
1261 while (scm_is_pair (hare
))
1263 if (scm_is_eq (hare
, tortoise
))
1264 goto fancy_printing
;
1265 hare
= SCM_CDR (hare
);
1266 if (!scm_is_pair (hare
))
1268 hare
= SCM_CDR (hare
);
1269 tortoise
= SCM_CDR (tortoise
);
1272 /* No cdr cycles intrinsic to this list */
1273 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
1274 for (exp
= SCM_CDR (exp
); scm_is_pair (exp
); exp
= SCM_CDR (exp
))
1278 for (i
= floor
; i
>= 0; --i
)
1279 if (scm_is_eq (PSTATE_STACK_REF(pstate
, i
), exp
))
1281 PUSH_REF (pstate
, exp
);
1282 scm_putc (' ', port
);
1284 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
1286 if (!SCM_NULL_OR_NIL_P (exp
))
1288 scm_puts (" . ", port
);
1289 scm_iprin1 (exp
, port
, pstate
);
1293 scm_putc (tlr
, port
);
1294 pstate
->top
= floor
+ 2;
1299 long n
= pstate
->length
;
1301 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
1302 exp
= SCM_CDR (exp
); --n
;
1303 for (; scm_is_pair (exp
); exp
= SCM_CDR (exp
))
1305 register unsigned long i
;
1307 for (i
= 0; i
< pstate
->top
; ++i
)
1308 if (scm_is_eq (PSTATE_STACK_REF(pstate
, i
), exp
))
1314 scm_puts (" ...", port
);
1320 PUSH_REF(pstate
, exp
);
1321 ++pstate
->list_offset
;
1322 scm_putc (' ', port
);
1324 scm_iprin1 (SCM_CAR (exp
), port
, pstate
);
1327 if (!SCM_NULL_OR_NIL_P (exp
))
1329 scm_puts (" . ", port
);
1330 scm_iprin1 (exp
, port
, pstate
);
1333 pstate
->list_offset
-= pstate
->top
- floor
- 2;
1337 pstate
->list_offset
-= pstate
->top
- floor
- 2;
1340 scm_puts (" . ", port
);
1341 print_circref (port
, pstate
, exp
);
1348 scm_valid_oport_value_p (SCM val
)
1350 return (SCM_OPOUTPORTP (val
)
1351 || (SCM_PORT_WITH_PS_P (val
)
1352 && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val
))));
1355 /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */
1358 scm_write (SCM obj
, SCM port
)
1360 if (SCM_UNBNDP (port
))
1361 port
= scm_current_output_port ();
1363 SCM_ASSERT (scm_valid_oport_value_p (port
), port
, SCM_ARG2
, s_write
);
1365 scm_prin1 (obj
, port
, 1);
1366 return SCM_UNSPECIFIED
;
1370 /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */
1373 scm_display (SCM obj
, SCM port
)
1375 if (SCM_UNBNDP (port
))
1376 port
= scm_current_output_port ();
1378 SCM_ASSERT (scm_valid_oport_value_p (port
), port
, SCM_ARG2
, s_display
);
1380 scm_prin1 (obj
, port
, 0);
1381 return SCM_UNSPECIFIED
;
1385 SCM_DEFINE (scm_simple_format
, "simple-format", 2, 0, 1,
1386 (SCM destination
, SCM message
, SCM args
),
1387 "Write @var{message} to @var{destination}, defaulting to\n"
1388 "the current output port.\n"
1389 "@var{message} can contain @code{~A} (was @code{%s}) and\n"
1390 "@code{~S} (was @code{%S}) escapes. When printed,\n"
1391 "the escapes are replaced with corresponding members of\n"
1393 "@code{~A} formats using @code{display} and @code{~S} formats\n"
1394 "using @code{write}.\n"
1395 "If @var{destination} is @code{#t}, then use the current output\n"
1396 "port, if @var{destination} is @code{#f}, then return a string\n"
1397 "containing the formatted text. Does not add a trailing newline.")
1398 #define FUNC_NAME s_scm_simple_format
1400 SCM port
, answer
= SCM_UNSPECIFIED
;
1401 int fReturnString
= 0;
1403 size_t start
, p
, end
;
1405 if (scm_is_eq (destination
, SCM_BOOL_T
))
1407 destination
= port
= scm_current_output_port ();
1409 else if (scm_is_false (destination
))
1412 port
= scm_mkstrport (SCM_INUM0
, SCM_BOOL_F
,
1413 SCM_OPN
| SCM_WRTNG
,
1419 SCM_VALIDATE_OPORT_VALUE (1, destination
);
1420 port
= SCM_COERCE_OUTPORT (destination
);
1422 SCM_VALIDATE_STRING (2, message
);
1423 SCM_VALIDATE_REST_ARGUMENT (args
);
1427 end
= scm_i_string_length (message
);
1428 for (p
= start
; p
!= end
; ++p
)
1429 if (scm_i_string_ref (message
, p
) == '~')
1434 switch (scm_i_string_ref (message
, p
))
1443 scm_lfwrite_substr (message
, start
, p
, port
);
1447 scm_lfwrite_substr (message
, start
, p
- 1, port
);
1452 SCM_MISC_ERROR ("FORMAT: Unsupported format option ~~~A - use (ice-9 format) instead",
1453 scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message
, p
))));
1458 if (!scm_is_pair (args
))
1459 SCM_MISC_ERROR ("FORMAT: Missing argument for ~~~A",
1460 scm_list_1 (SCM_MAKE_CHAR (scm_i_string_ref (message
, p
))));
1462 scm_lfwrite_substr (message
, start
, p
- 1, port
);
1463 /* we pass destination here */
1464 scm_prin1 (SCM_CAR (args
), destination
, writingp
);
1465 args
= SCM_CDR (args
);
1469 scm_lfwrite_substr (message
, start
, p
, port
);
1470 if (!scm_is_eq (args
, SCM_EOL
))
1471 SCM_MISC_ERROR ("FORMAT: ~A superfluous arguments",
1472 scm_list_1 (scm_length (args
)));
1475 answer
= scm_strport_to_string (destination
);
1477 return scm_return_first (answer
, message
);
1482 SCM_DEFINE (scm_newline
, "newline", 0, 1, 0,
1484 "Send a newline to @var{port}.\n"
1485 "If @var{port} is omitted, send to the current output port.")
1486 #define FUNC_NAME s_scm_newline
1488 if (SCM_UNBNDP (port
))
1489 port
= scm_current_output_port ();
1491 SCM_VALIDATE_OPORT_VALUE (1, port
);
1493 scm_putc ('\n', SCM_COERCE_OUTPORT (port
));
1494 return SCM_UNSPECIFIED
;
1498 SCM_DEFINE (scm_write_char
, "write-char", 1, 1, 0,
1499 (SCM chr
, SCM port
),
1500 "Send character @var{chr} to @var{port}.")
1501 #define FUNC_NAME s_scm_write_char
1503 if (SCM_UNBNDP (port
))
1504 port
= scm_current_output_port ();
1506 SCM_VALIDATE_CHAR (1, chr
);
1507 SCM_VALIDATE_OPORT_VALUE (2, port
);
1509 port
= SCM_COERCE_OUTPORT (port
);
1510 if (!display_character (SCM_CHAR (chr
), port
,
1511 PORT_CONVERSION_HANDLER (port
)))
1512 scm_encoding_error (__func__
, errno
,
1513 "cannot convert to output locale",
1516 return SCM_UNSPECIFIED
;
1522 /* Call back to Scheme code to do the printing of special objects
1523 * (like structs). SCM_PRINTER_APPLY applies PROC to EXP and a smob
1524 * containing PORT and PSTATE. This object can be used as the port for
1525 * display/write etc to continue the current print chain. The REVEALED
1526 * field of PSTATE is set to true to indicate that the print state has
1527 * escaped to Scheme and thus has to be freed by the GC.
1530 scm_t_bits scm_tc16_port_with_ps
;
1532 /* Print exactly as the port itself would */
1535 port_with_ps_print (SCM obj
, SCM port
, scm_print_state
*pstate
)
1537 obj
= SCM_PORT_WITH_PS_PORT (obj
);
1538 return scm_ptobs
[SCM_PTOBNUM (obj
)].print (obj
, port
, pstate
);
1542 scm_printer_apply (SCM proc
, SCM exp
, SCM port
, scm_print_state
*pstate
)
1544 pstate
->revealed
= 1;
1545 return scm_call_2 (proc
, exp
,
1546 scm_i_port_with_print_state (port
, pstate
->handle
));
1549 SCM_DEFINE (scm_port_with_print_state
, "port-with-print-state", 1, 1, 0,
1550 (SCM port
, SCM pstate
),
1551 "Create a new port which behaves like @var{port}, but with an\n"
1552 "included print state @var{pstate}. @var{pstate} is optional.\n"
1553 "If @var{pstate} isn't supplied and @var{port} already has\n"
1554 "a print state, the old print state is reused.")
1555 #define FUNC_NAME s_scm_port_with_print_state
1557 SCM_VALIDATE_OPORT_VALUE (1, port
);
1558 if (!SCM_UNBNDP (pstate
))
1559 SCM_VALIDATE_PRINTSTATE (2, pstate
);
1560 return scm_i_port_with_print_state (port
, pstate
);
1564 SCM_DEFINE (scm_get_print_state
, "get-print-state", 1, 0, 0,
1566 "Return the print state of the port @var{port}. If @var{port}\n"
1567 "has no associated print state, @code{#f} is returned.")
1568 #define FUNC_NAME s_scm_get_print_state
1570 if (SCM_PORT_WITH_PS_P (port
))
1571 return SCM_PORT_WITH_PS_PS (port
);
1572 if (SCM_OUTPUT_PORT_P (port
))
1574 SCM_WRONG_TYPE_ARG (1, port
);
1585 scm_gc_register_root (&print_state_pool
);
1586 scm_gc_register_root (&scm_print_state_vtable
);
1587 type
= scm_make_vtable (scm_from_locale_string (SCM_PRINT_STATE_LAYOUT
),
1589 scm_set_struct_vtable_name_x (type
, scm_from_latin1_symbol ("print-state"));
1590 scm_print_state_vtable
= type
;
1592 /* Don't want to bind a wrapper class in GOOPS, so pass 0 as arg1. */
1593 scm_tc16_port_with_ps
= scm_make_smob_type (0, 0);
1594 scm_set_smob_print (scm_tc16_port_with_ps
, port_with_ps_print
);
1596 #include "libguile/print.x"
1598 scm_init_opts (scm_print_options
, scm_print_opts
);
1599 scm_print_opts
[SCM_PRINT_HIGHLIGHT_PREFIX_I
].val
=
1600 SCM_UNPACK (scm_from_locale_string ("{"));
1601 scm_print_opts
[SCM_PRINT_HIGHLIGHT_SUFFIX_I
].val
=
1602 SCM_UNPACK (scm_from_locale_string ("}"));
1603 scm_print_opts
[SCM_PRINT_KEYWORD_STYLE_I
].val
= SCM_UNPACK (sym_reader
);