| 1 | /* Copyright (C) 1995-1999, 2000, 2001, 2002, 2003, 2004, 2006, 2008, |
| 2 | * 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
| 3 | * |
| 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. |
| 8 | * |
| 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. |
| 13 | * |
| 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 |
| 17 | * 02110-1301 USA |
| 18 | */ |
| 19 | |
| 20 | |
| 21 | \f |
| 22 | #ifdef HAVE_CONFIG_H |
| 23 | # include <config.h> |
| 24 | #endif |
| 25 | |
| 26 | #include <errno.h> |
| 27 | #include <iconv.h> |
| 28 | #include <stdio.h> |
| 29 | #include <assert.h> |
| 30 | |
| 31 | #include <uniconv.h> |
| 32 | #include <unictype.h> |
| 33 | #include <c-strcase.h> |
| 34 | |
| 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" |
| 56 | |
| 57 | #include "libguile/validate.h" |
| 58 | #include "libguile/print.h" |
| 59 | |
| 60 | #include "libguile/private-options.h" |
| 61 | |
| 62 | \f |
| 63 | |
| 64 | /* Character printers. */ |
| 65 | |
| 66 | #define PORT_CONVERSION_HANDLER(port) \ |
| 67 | SCM_PTAB_ENTRY (port)->ilseq_handler |
| 68 | |
| 69 | static size_t display_string (const void *, int, size_t, SCM, |
| 70 | scm_t_string_failed_conversion_handler); |
| 71 | |
| 72 | static int display_character (scm_t_wchar, SCM, |
| 73 | scm_t_string_failed_conversion_handler); |
| 74 | |
| 75 | static void write_character (scm_t_wchar, SCM, int); |
| 76 | |
| 77 | static void write_character_escaped (scm_t_wchar, int, SCM); |
| 78 | |
| 79 | \f |
| 80 | |
| 81 | /* {Names of immediate symbols} |
| 82 | * |
| 83 | * This table must agree with the declarations in scm.h: {Immediate Symbols}. |
| 84 | */ |
| 85 | |
| 86 | /* This table must agree with the list of flags in tags.h. */ |
| 87 | static const char *iflagnames[] = |
| 88 | { |
| 89 | "#f", |
| 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>", |
| 92 | "()", |
| 93 | "#t", |
| 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>", |
| 97 | "#<unspecified>", |
| 98 | "#<undefined>", |
| 99 | "#<eof>", |
| 100 | |
| 101 | /* Unbound slot marker for GOOPS. For internal use in GOOPS only. */ |
| 102 | "#<unbound>", |
| 103 | }; |
| 104 | |
| 105 | SCM_SYMBOL (sym_reader, "reader"); |
| 106 | |
| 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'." }, |
| 118 | { 0 }, |
| 119 | }; |
| 120 | |
| 121 | SCM_DEFINE (scm_print_options, "print-options-interface", 0, 1, 0, |
| 122 | (SCM setting), |
| 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 |
| 128 | { |
| 129 | SCM ans = scm_options (setting, |
| 130 | scm_print_opts, |
| 131 | FUNC_NAME); |
| 132 | return ans; |
| 133 | } |
| 134 | #undef FUNC_NAME |
| 135 | |
| 136 | \f |
| 137 | /* {Printing of Scheme Objects} |
| 138 | */ |
| 139 | |
| 140 | /* Detection of circular references. |
| 141 | * |
| 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). |
| 145 | */ |
| 146 | #define PUSH_REF(pstate, obj) \ |
| 147 | do \ |
| 148 | { \ |
| 149 | PSTATE_STACK_SET (pstate, pstate->top, obj); \ |
| 150 | pstate->top++; \ |
| 151 | if (pstate->top == pstate->ceiling) \ |
| 152 | grow_ref_stack (pstate); \ |
| 153 | } while(0) |
| 154 | |
| 155 | #define ENTER_NESTED_DATA(pstate, obj, label) \ |
| 156 | do \ |
| 157 | { \ |
| 158 | register unsigned long i; \ |
| 159 | for (i = 0; i < pstate->top; ++i) \ |
| 160 | if (scm_is_eq (PSTATE_STACK_REF (pstate, i), (obj))) \ |
| 161 | goto label; \ |
| 162 | if (pstate->fancyp) \ |
| 163 | { \ |
| 164 | if (pstate->top - pstate->list_offset >= pstate->level) \ |
| 165 | { \ |
| 166 | scm_putc ('#', port); \ |
| 167 | return; \ |
| 168 | } \ |
| 169 | } \ |
| 170 | PUSH_REF(pstate, obj); \ |
| 171 | } while(0) |
| 172 | |
| 173 | #define EXIT_NESTED_DATA(pstate) \ |
| 174 | do \ |
| 175 | { \ |
| 176 | --pstate->top; \ |
| 177 | PSTATE_STACK_SET (pstate, pstate->top, SCM_UNDEFINED); \ |
| 178 | } \ |
| 179 | while (0) |
| 180 | |
| 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; |
| 184 | |
| 185 | #ifdef GUILE_DEBUG /* Used for debugging purposes */ |
| 186 | |
| 187 | SCM_DEFINE (scm_current_pstate, "current-pstate", 0, 0, 0, |
| 188 | (), |
| 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 |
| 193 | { |
| 194 | if (!scm_is_null (print_state_pool)) |
| 195 | return SCM_CAR (print_state_pool); |
| 196 | else |
| 197 | return SCM_BOOL_F; |
| 198 | } |
| 199 | #undef FUNC_NAME |
| 200 | |
| 201 | #endif |
| 202 | |
| 203 | #define PSTATE_SIZE 50L |
| 204 | |
| 205 | static SCM |
| 206 | make_print_state (void) |
| 207 | { |
| 208 | SCM print_state |
| 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; |
| 214 | return print_state; |
| 215 | } |
| 216 | |
| 217 | SCM |
| 218 | scm_make_print_state () |
| 219 | { |
| 220 | SCM answer = SCM_BOOL_F; |
| 221 | |
| 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)) |
| 225 | { |
| 226 | answer = SCM_CAR (print_state_pool); |
| 227 | print_state_pool = SCM_CDR (print_state_pool); |
| 228 | } |
| 229 | scm_i_pthread_mutex_unlock (&print_state_mutex); |
| 230 | |
| 231 | return scm_is_false (answer) ? make_print_state () : answer; |
| 232 | } |
| 233 | |
| 234 | void |
| 235 | scm_free_print_state (SCM print_state) |
| 236 | { |
| 237 | SCM handle; |
| 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 |
| 242 | * often. |
| 243 | */ |
| 244 | pstate->fancyp = 0; |
| 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); |
| 251 | } |
| 252 | |
| 253 | SCM |
| 254 | scm_i_port_with_print_state (SCM port, SCM print_state) |
| 255 | { |
| 256 | if (SCM_UNBNDP (print_state)) |
| 257 | { |
| 258 | if (SCM_PORT_WITH_PS_P (port)) |
| 259 | return port; |
| 260 | else |
| 261 | print_state = scm_make_print_state (); |
| 262 | /* port does not need to be coerced since it doesn't have ps */ |
| 263 | } |
| 264 | else |
| 265 | port = SCM_COERCE_OUTPORT (port); |
| 266 | SCM_RETURN_NEWSMOB (scm_tc16_port_with_ps, |
| 267 | SCM_UNPACK (scm_cons (port, print_state))); |
| 268 | } |
| 269 | |
| 270 | static void |
| 271 | grow_ref_stack (scm_print_state *pstate) |
| 272 | { |
| 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); |
| 277 | unsigned long int i; |
| 278 | |
| 279 | for (i = 0; i != old_size; ++i) |
| 280 | SCM_SIMPLE_VECTOR_SET (new_vect, i, SCM_SIMPLE_VECTOR_REF (old_vect, i)); |
| 281 | |
| 282 | pstate->ref_vect = new_vect; |
| 283 | pstate->ceiling = new_size; |
| 284 | } |
| 285 | |
| 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)) |
| 288 | |
| 289 | static void |
| 290 | print_circref (SCM port, scm_print_state *pstate, SCM ref) |
| 291 | { |
| 292 | register long i; |
| 293 | long self = pstate->top - 1; |
| 294 | i = pstate->top - 1; |
| 295 | if (scm_is_pair (PSTATE_STACK_REF (pstate, i))) |
| 296 | { |
| 297 | while (i > 0) |
| 298 | { |
| 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)))) |
| 302 | break; |
| 303 | --i; |
| 304 | } |
| 305 | self = i; |
| 306 | } |
| 307 | for (i = pstate->top - 1; 1; --i) |
| 308 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), ref)) |
| 309 | break; |
| 310 | scm_putc ('#', port); |
| 311 | scm_intprint (i - self, 10, port); |
| 312 | scm_putc ('#', port); |
| 313 | } |
| 314 | |
| 315 | /* Print the name of a symbol. */ |
| 316 | |
| 317 | static int |
| 318 | quote_keywordish_symbols (void) |
| 319 | { |
| 320 | SCM option = SCM_PRINT_KEYWORD_STYLE; |
| 321 | |
| 322 | if (scm_is_false (option)) |
| 323 | return 0; |
| 324 | if (scm_is_eq (option, sym_reader)) |
| 325 | return scm_is_true (SCM_PACK (SCM_KEYWORD_STYLE)); |
| 326 | return 1; |
| 327 | } |
| 328 | |
| 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) |
| 336 | |
| 337 | #define SUBSEQUENT_IDENTIFIER_MASK \ |
| 338 | (INITIAL_IDENTIFIER_MASK \ |
| 339 | | UC_CATEGORY_MASK_Nd | UC_CATEGORY_MASK_Mc | UC_CATEGORY_MASK_Me) |
| 340 | |
| 341 | static int |
| 342 | symbol_has_extended_read_syntax (SCM sym) |
| 343 | { |
| 344 | size_t pos, len = scm_i_symbol_length (sym); |
| 345 | scm_t_wchar c; |
| 346 | |
| 347 | /* The empty symbol. */ |
| 348 | if (len == 0) |
| 349 | return 1; |
| 350 | |
| 351 | c = scm_i_symbol_ref (sym, 0); |
| 352 | |
| 353 | /* Single dot; conflicts with dotted-pair notation. */ |
| 354 | if (len == 1 && c == '.') |
| 355 | return 1; |
| 356 | |
| 357 | /* Other initial-character constraints. */ |
| 358 | if (c == '\'' || c == '`' || c == ',' || c == '"' || c == ';' || c == '#') |
| 359 | return 1; |
| 360 | |
| 361 | /* Keywords can be identified by trailing colons too. */ |
| 362 | if (c == ':' || scm_i_symbol_ref (sym, len - 1) == ':') |
| 363 | return quote_keywordish_symbols (); |
| 364 | |
| 365 | /* Number-ish symbols. */ |
| 366 | if (scm_is_true (scm_i_string_to_number (scm_symbol_to_string (sym), 10))) |
| 367 | return 1; |
| 368 | |
| 369 | /* Other disallowed first characters. */ |
| 370 | if (!uc_is_general_category_withtable (c, INITIAL_IDENTIFIER_MASK)) |
| 371 | return 1; |
| 372 | |
| 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++) |
| 377 | { |
| 378 | c = scm_i_symbol_ref (sym, pos); |
| 379 | if (!uc_is_general_category_withtable (c, SUBSEQUENT_IDENTIFIER_MASK)) |
| 380 | return 1; |
| 381 | else if (c == '"' || c == ';' || c == '#') |
| 382 | return 1; |
| 383 | } |
| 384 | |
| 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | static void |
| 389 | print_normal_symbol (SCM sym, SCM port) |
| 390 | { |
| 391 | scm_display (scm_symbol_to_string (sym), port); |
| 392 | } |
| 393 | |
| 394 | static void |
| 395 | print_extended_symbol (SCM sym, SCM port) |
| 396 | { |
| 397 | size_t pos, len; |
| 398 | scm_t_string_failed_conversion_handler strategy; |
| 399 | |
| 400 | len = scm_i_symbol_length (sym); |
| 401 | strategy = PORT_CONVERSION_HANDLER (port); |
| 402 | |
| 403 | scm_lfwrite ("#{", 2, port); |
| 404 | |
| 405 | for (pos = 0; pos < len; pos++) |
| 406 | { |
| 407 | scm_t_wchar c = scm_i_symbol_ref (sym, pos); |
| 408 | |
| 409 | if (uc_is_general_category_withtable (c, |
| 410 | SUBSEQUENT_IDENTIFIER_MASK |
| 411 | | UC_CATEGORY_MASK_Zs)) |
| 412 | { |
| 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)); |
| 418 | } |
| 419 | else |
| 420 | { |
| 421 | display_string ("\\x", 1, 2, port, iconveh_question_mark); |
| 422 | scm_intprint (c, 16, port); |
| 423 | display_character (';', port, iconveh_question_mark); |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | scm_lfwrite ("}#", 2, port); |
| 428 | } |
| 429 | |
| 430 | /* FIXME: allow R6RS hex escapes instead of #{...}#. */ |
| 431 | void |
| 432 | scm_i_print_symbol_name (SCM sym, SCM port) |
| 433 | { |
| 434 | if (symbol_has_extended_read_syntax (sym)) |
| 435 | print_extended_symbol (sym, port); |
| 436 | else |
| 437 | print_normal_symbol (sym, port); |
| 438 | } |
| 439 | |
| 440 | void |
| 441 | scm_print_symbol_name (const char *str, size_t len, SCM port) |
| 442 | { |
| 443 | SCM symbol = scm_from_locale_symboln (str, len); |
| 444 | scm_i_print_symbol_name (symbol, port); |
| 445 | } |
| 446 | |
| 447 | /* Print generally. Handles both write and display according to PSTATE. |
| 448 | */ |
| 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); |
| 451 | |
| 452 | static void iprin1 (SCM exp, SCM port, scm_print_state *pstate); |
| 453 | |
| 454 | |
| 455 | /* Print a character as an octal or hex escape. */ |
| 456 | #define PRINT_CHAR_ESCAPE(i, port) \ |
| 457 | do \ |
| 458 | { \ |
| 459 | if (!SCM_R6RS_ESCAPES_P) \ |
| 460 | scm_intprint (i, 8, port); \ |
| 461 | else \ |
| 462 | { \ |
| 463 | scm_puts ("x", port); \ |
| 464 | scm_intprint (i, 16, port); \ |
| 465 | } \ |
| 466 | } \ |
| 467 | while (0) |
| 468 | |
| 469 | |
| 470 | void |
| 471 | scm_iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
| 472 | { |
| 473 | if (pstate->fancyp |
| 474 | && scm_is_true (scm_memq (exp, pstate->highlight_objects))) |
| 475 | { |
| 476 | scm_display (SCM_PRINT_HIGHLIGHT_PREFIX, port); |
| 477 | iprin1 (exp, port, pstate); |
| 478 | scm_display (SCM_PRINT_HIGHLIGHT_SUFFIX, port); |
| 479 | } |
| 480 | else |
| 481 | iprin1 (exp, port, pstate); |
| 482 | } |
| 483 | |
| 484 | static void |
| 485 | iprin1 (SCM exp, SCM port, scm_print_state *pstate) |
| 486 | { |
| 487 | switch (SCM_ITAG3 (exp)) |
| 488 | { |
| 489 | case scm_tc3_tc7_1: |
| 490 | case scm_tc3_tc7_2: |
| 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. |
| 494 | */ |
| 495 | scm_ipruk ("immediate", exp, port); |
| 496 | break; |
| 497 | case scm_tc3_int_1: |
| 498 | case scm_tc3_int_2: |
| 499 | scm_intprint (SCM_I_INUM (exp), 10, port); |
| 500 | break; |
| 501 | case scm_tc3_imm24: |
| 502 | if (SCM_CHARP (exp)) |
| 503 | { |
| 504 | if (SCM_WRITINGP (pstate)) |
| 505 | write_character (SCM_CHAR (exp), port, 0); |
| 506 | else |
| 507 | { |
| 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", |
| 512 | port, exp); |
| 513 | } |
| 514 | } |
| 515 | else if (SCM_IFLAGP (exp) |
| 516 | && ((size_t) SCM_IFLAGNUM (exp) < (sizeof iflagnames / sizeof (char *)))) |
| 517 | { |
| 518 | scm_puts (iflagnames [SCM_IFLAGNUM (exp)], port); |
| 519 | } |
| 520 | else |
| 521 | { |
| 522 | /* unknown immediate value */ |
| 523 | scm_ipruk ("immediate", exp, port); |
| 524 | } |
| 525 | break; |
| 526 | case scm_tc3_cons: |
| 527 | switch (SCM_TYP7 (exp)) |
| 528 | { |
| 529 | case scm_tcs_struct: |
| 530 | { |
| 531 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 532 | if (SCM_OBJ_CLASS_FLAGS (exp) & SCM_CLASSF_GOOPS) |
| 533 | { |
| 534 | SCM pwps, print = pstate->writingp ? g_write : g_display; |
| 535 | if (SCM_UNPACK (print) == 0) |
| 536 | goto print_struct; |
| 537 | pwps = scm_i_port_with_print_state (port, pstate->handle); |
| 538 | pstate->revealed = 1; |
| 539 | scm_call_generic_2 (print, exp, pwps); |
| 540 | } |
| 541 | else |
| 542 | { |
| 543 | print_struct: |
| 544 | scm_print_struct (exp, port, pstate); |
| 545 | } |
| 546 | EXIT_NESTED_DATA (pstate); |
| 547 | } |
| 548 | break; |
| 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); |
| 554 | break; |
| 555 | circref: |
| 556 | print_circref (port, pstate, exp); |
| 557 | break; |
| 558 | case scm_tc7_number: |
| 559 | switch SCM_TYP16 (exp) { |
| 560 | case scm_tc16_big: |
| 561 | scm_bigprint (exp, port, pstate); |
| 562 | break; |
| 563 | case scm_tc16_real: |
| 564 | scm_print_real (exp, port, pstate); |
| 565 | break; |
| 566 | case scm_tc16_complex: |
| 567 | scm_print_complex (exp, port, pstate); |
| 568 | break; |
| 569 | case scm_tc16_fraction: |
| 570 | scm_i_print_fraction (exp, port, pstate); |
| 571 | break; |
| 572 | } |
| 573 | break; |
| 574 | case scm_tc7_string: |
| 575 | if (SCM_WRITINGP (pstate)) |
| 576 | { |
| 577 | size_t len, i; |
| 578 | |
| 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); |
| 583 | |
| 584 | display_character ('"', port, iconveh_question_mark); |
| 585 | scm_remember_upto_here_1 (exp); |
| 586 | } |
| 587 | else |
| 588 | { |
| 589 | size_t len, printed; |
| 590 | |
| 591 | len = scm_i_string_length (exp); |
| 592 | printed = display_string (scm_i_string_data (exp), |
| 593 | scm_i_is_narrow_string (exp), |
| 594 | len, port, |
| 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)); |
| 600 | } |
| 601 | |
| 602 | scm_remember_upto_here_1 (exp); |
| 603 | break; |
| 604 | case scm_tc7_symbol: |
| 605 | if (scm_i_symbol_is_interned (exp)) |
| 606 | { |
| 607 | scm_i_print_symbol_name (exp, port); |
| 608 | scm_remember_upto_here_1 (exp); |
| 609 | } |
| 610 | else |
| 611 | { |
| 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); |
| 617 | } |
| 618 | break; |
| 619 | case scm_tc7_variable: |
| 620 | scm_i_variable_print (exp, port, pstate); |
| 621 | break; |
| 622 | case scm_tc7_program: |
| 623 | scm_i_program_print (exp, port, pstate); |
| 624 | break; |
| 625 | case scm_tc7_pointer: |
| 626 | scm_i_pointer_print (exp, port, pstate); |
| 627 | break; |
| 628 | case scm_tc7_hashtable: |
| 629 | scm_i_hashtable_print (exp, port, pstate); |
| 630 | break; |
| 631 | case scm_tc7_fluid: |
| 632 | scm_i_fluid_print (exp, port, pstate); |
| 633 | break; |
| 634 | case scm_tc7_dynamic_state: |
| 635 | scm_i_dynamic_state_print (exp, port, pstate); |
| 636 | break; |
| 637 | case scm_tc7_frame: |
| 638 | scm_i_frame_print (exp, port, pstate); |
| 639 | break; |
| 640 | case scm_tc7_objcode: |
| 641 | scm_i_objcode_print (exp, port, pstate); |
| 642 | break; |
| 643 | case scm_tc7_vm: |
| 644 | scm_i_vm_print (exp, port, pstate); |
| 645 | break; |
| 646 | case scm_tc7_vm_cont: |
| 647 | scm_i_vm_cont_print (exp, port, pstate); |
| 648 | break; |
| 649 | case scm_tc7_prompt: |
| 650 | scm_i_prompt_print (exp, port, pstate); |
| 651 | break; |
| 652 | case scm_tc7_with_fluids: |
| 653 | scm_i_with_fluids_print (exp, port, pstate); |
| 654 | break; |
| 655 | case scm_tc7_array: |
| 656 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 657 | scm_i_print_array (exp, port, pstate); |
| 658 | EXIT_NESTED_DATA (pstate); |
| 659 | break; |
| 660 | case scm_tc7_bytevector: |
| 661 | scm_i_print_bytevector (exp, port, pstate); |
| 662 | break; |
| 663 | case scm_tc7_bitvector: |
| 664 | scm_i_print_bitvector (exp, port, pstate); |
| 665 | break; |
| 666 | case scm_tc7_wvect: |
| 667 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 668 | if (SCM_IS_WHVEC (exp)) |
| 669 | scm_puts ("#wh(", port); |
| 670 | else |
| 671 | scm_puts ("#w(", port); |
| 672 | goto common_vector_printer; |
| 673 | case scm_tc7_vector: |
| 674 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 675 | scm_puts ("#(", port); |
| 676 | common_vector_printer: |
| 677 | { |
| 678 | register long i; |
| 679 | long last = SCM_SIMPLE_VECTOR_LENGTH (exp) - 1; |
| 680 | int cutp = 0; |
| 681 | if (pstate->fancyp |
| 682 | && SCM_SIMPLE_VECTOR_LENGTH (exp) > pstate->length) |
| 683 | { |
| 684 | last = pstate->length - 1; |
| 685 | cutp = 1; |
| 686 | } |
| 687 | if (SCM_I_WVECTP (exp)) |
| 688 | { |
| 689 | /* Elements of weak vectors may not be accessed via the |
| 690 | `SIMPLE_VECTOR_REF ()' macro. */ |
| 691 | for (i = 0; i < last; ++i) |
| 692 | { |
| 693 | scm_iprin1 (scm_c_vector_ref (exp, i), |
| 694 | port, pstate); |
| 695 | scm_putc (' ', port); |
| 696 | } |
| 697 | } |
| 698 | else |
| 699 | { |
| 700 | for (i = 0; i < last; ++i) |
| 701 | { |
| 702 | scm_iprin1 (SCM_SIMPLE_VECTOR_REF (exp, i), port, pstate); |
| 703 | scm_putc (' ', port); |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | if (i == last) |
| 708 | { |
| 709 | /* CHECK_INTS; */ |
| 710 | scm_iprin1 (scm_c_vector_ref (exp, i), port, pstate); |
| 711 | } |
| 712 | if (cutp) |
| 713 | scm_puts (" ...", port); |
| 714 | scm_putc (')', port); |
| 715 | } |
| 716 | EXIT_NESTED_DATA (pstate); |
| 717 | break; |
| 718 | case scm_tc7_port: |
| 719 | { |
| 720 | register long i = SCM_PTOBNUM (exp); |
| 721 | if (i < scm_numptob |
| 722 | && scm_ptobs[i].print |
| 723 | && (scm_ptobs[i].print) (exp, port, pstate)) |
| 724 | break; |
| 725 | goto punk; |
| 726 | } |
| 727 | case scm_tc7_smob: |
| 728 | ENTER_NESTED_DATA (pstate, exp, circref); |
| 729 | SCM_SMOB_DESCRIPTOR (exp).print (exp, port, pstate); |
| 730 | EXIT_NESTED_DATA (pstate); |
| 731 | break; |
| 732 | default: |
| 733 | /* case scm_tcs_closures: */ |
| 734 | punk: |
| 735 | scm_ipruk ("type", exp, port); |
| 736 | } |
| 737 | } |
| 738 | } |
| 739 | |
| 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. |
| 743 | */ |
| 744 | |
| 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. */ |
| 748 | |
| 749 | void |
| 750 | scm_prin1 (SCM exp, SCM port, int writingp) |
| 751 | { |
| 752 | SCM handle = SCM_BOOL_F; /* Will GC protect the handle whilst unlinked */ |
| 753 | SCM pstate_scm; |
| 754 | scm_print_state *pstate; |
| 755 | int old_writingp; |
| 756 | |
| 757 | /* If PORT is a print-state/port pair, use that. Else create a new |
| 758 | print-state. */ |
| 759 | |
| 760 | if (SCM_PORT_WITH_PS_P (port)) |
| 761 | { |
| 762 | pstate_scm = SCM_PORT_WITH_PS_PS (port); |
| 763 | port = SCM_PORT_WITH_PS_PORT (port); |
| 764 | } |
| 765 | else |
| 766 | { |
| 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)) |
| 770 | { |
| 771 | handle = print_state_pool; |
| 772 | print_state_pool = SCM_CDR (print_state_pool); |
| 773 | } |
| 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); |
| 778 | } |
| 779 | |
| 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; |
| 785 | |
| 786 | /* Return print state to pool if it has been created above and |
| 787 | hasn't escaped to Scheme. */ |
| 788 | |
| 789 | if (scm_is_true (handle) && !pstate->revealed) |
| 790 | { |
| 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); |
| 795 | } |
| 796 | } |
| 797 | |
| 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. */ |
| 800 | static size_t |
| 801 | codepoint_to_utf8 (scm_t_wchar ch, scm_t_uint8 utf8[4]) |
| 802 | { |
| 803 | size_t len; |
| 804 | scm_t_uint32 codepoint; |
| 805 | |
| 806 | codepoint = (scm_t_uint32) ch; |
| 807 | |
| 808 | if (codepoint <= 0x7f) |
| 809 | { |
| 810 | len = 1; |
| 811 | utf8[0] = (scm_t_uint8) codepoint; |
| 812 | } |
| 813 | else if (codepoint <= 0x7ffUL) |
| 814 | { |
| 815 | len = 2; |
| 816 | utf8[0] = 0xc0 | (codepoint >> 6); |
| 817 | utf8[1] = 0x80 | (codepoint & 0x3f); |
| 818 | } |
| 819 | else if (codepoint <= 0xffffUL) |
| 820 | { |
| 821 | len = 3; |
| 822 | utf8[0] = 0xe0 | (codepoint >> 12); |
| 823 | utf8[1] = 0x80 | ((codepoint >> 6) & 0x3f); |
| 824 | utf8[2] = 0x80 | (codepoint & 0x3f); |
| 825 | } |
| 826 | else |
| 827 | { |
| 828 | len = 4; |
| 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); |
| 833 | } |
| 834 | |
| 835 | return len; |
| 836 | } |
| 837 | |
| 838 | #define STR_REF(s, x) \ |
| 839 | (narrow_p \ |
| 840 | ? (scm_t_wchar) ((unsigned char *) (s))[x] \ |
| 841 | : ((scm_t_wchar *) (s))[x]) |
| 842 | |
| 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. */ |
| 845 | static size_t |
| 846 | display_string_as_utf8 (const void *str, int narrow_p, size_t len, |
| 847 | SCM port) |
| 848 | { |
| 849 | size_t printed = 0; |
| 850 | |
| 851 | while (len > printed) |
| 852 | { |
| 853 | size_t utf8_len, i; |
| 854 | char *input, utf8_buf[256]; |
| 855 | |
| 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); |
| 859 | i++) |
| 860 | { |
| 861 | utf8_len += codepoint_to_utf8 (STR_REF (str, i), |
| 862 | (scm_t_uint8 *) input); |
| 863 | input = utf8_buf + utf8_len; |
| 864 | } |
| 865 | |
| 866 | /* INPUT was successfully converted, entirely; print the |
| 867 | result. */ |
| 868 | scm_lfwrite (utf8_buf, utf8_len, port); |
| 869 | printed += i - printed; |
| 870 | } |
| 871 | |
| 872 | assert (printed == len); |
| 873 | |
| 874 | return len; |
| 875 | } |
| 876 | |
| 877 | /* Convert STR through PORT's output conversion descriptor and write the |
| 878 | output to PORT. Return the number of codepoints written. */ |
| 879 | static size_t |
| 880 | display_string_using_iconv (const void *str, int narrow_p, size_t len, |
| 881 | SCM port, |
| 882 | scm_t_string_failed_conversion_handler strategy) |
| 883 | { |
| 884 | size_t printed; |
| 885 | scm_t_iconv_descriptors *id; |
| 886 | scm_t_port_internal *pti = SCM_PORT_GET_INTERNAL (port); |
| 887 | |
| 888 | id = scm_i_port_iconv_descriptors (port, SCM_PORT_WRITE); |
| 889 | |
| 890 | if (SCM_UNLIKELY (pti->at_stream_start_for_bom_write && len > 0)) |
| 891 | { |
| 892 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
| 893 | |
| 894 | /* Record that we're no longer at stream start. */ |
| 895 | pti->at_stream_start_for_bom_write = 0; |
| 896 | if (pt->rw_random) |
| 897 | pti->at_stream_start_for_bom_read = 0; |
| 898 | |
| 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); |
| 903 | } |
| 904 | |
| 905 | printed = 0; |
| 906 | |
| 907 | while (len > printed) |
| 908 | { |
| 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]; |
| 913 | size_t offsets[256]; |
| 914 | |
| 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); |
| 918 | i++) |
| 919 | { |
| 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; |
| 924 | } |
| 925 | |
| 926 | input = utf8_buf; |
| 927 | input_left = utf8_len; |
| 928 | |
| 929 | output = encoded_output; |
| 930 | output_left = sizeof (encoded_output); |
| 931 | |
| 932 | done = iconv (id->output_cd, &input, &input_left, |
| 933 | &output, &output_left); |
| 934 | |
| 935 | output_len = sizeof (encoded_output) - output_left; |
| 936 | |
| 937 | if (SCM_UNLIKELY (done == (size_t) -1)) |
| 938 | { |
| 939 | int errno_save = errno; |
| 940 | |
| 941 | /* Reset the `iconv' state. */ |
| 942 | iconv (id->output_cd, NULL, NULL, NULL, NULL); |
| 943 | |
| 944 | /* Print the OUTPUT_LEN bytes successfully converted. */ |
| 945 | scm_lfwrite (encoded_output, output_len, port); |
| 946 | |
| 947 | /* See how many input codepoints these OUTPUT_LEN bytes |
| 948 | corresponds to. */ |
| 949 | codepoints_read = offsets[input - utf8_buf] - printed; |
| 950 | printed += codepoints_read; |
| 951 | |
| 952 | if (errno_save == EILSEQ && |
| 953 | strategy != SCM_FAILED_CONVERSION_ERROR) |
| 954 | { |
| 955 | /* Conversion failed somewhere in INPUT and we want to |
| 956 | escape or substitute the offending input character. */ |
| 957 | |
| 958 | if (strategy == SCM_FAILED_CONVERSION_ESCAPE_SEQUENCE) |
| 959 | { |
| 960 | scm_t_wchar ch; |
| 961 | |
| 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); |
| 965 | } |
| 966 | else |
| 967 | /* STRATEGY is `SCM_FAILED_CONVERSION_QUESTION_MARK'. */ |
| 968 | display_string ("?", 1, 1, port, strategy); |
| 969 | |
| 970 | printed++; |
| 971 | } |
| 972 | else |
| 973 | /* Something bad happened that we can't handle: bail out. */ |
| 974 | break; |
| 975 | } |
| 976 | else |
| 977 | { |
| 978 | /* INPUT was successfully converted, entirely; print the |
| 979 | result. */ |
| 980 | scm_lfwrite (encoded_output, output_len, port); |
| 981 | codepoints_read = i - printed; |
| 982 | printed += codepoints_read; |
| 983 | } |
| 984 | } |
| 985 | |
| 986 | return printed; |
| 987 | } |
| 988 | |
| 989 | #undef STR_REF |
| 990 | |
| 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 |
| 995 | `scm_t_wchar'. */ |
| 996 | static size_t |
| 997 | display_string (const void *str, int narrow_p, |
| 998 | size_t len, SCM port, |
| 999 | scm_t_string_failed_conversion_handler strategy) |
| 1000 | |
| 1001 | { |
| 1002 | scm_t_port_internal *pti; |
| 1003 | |
| 1004 | pti = SCM_PORT_GET_INTERNAL (port); |
| 1005 | |
| 1006 | if (pti->encoding_mode == SCM_PORT_ENCODING_MODE_UTF8) |
| 1007 | return display_string_as_utf8 (str, narrow_p, len, port); |
| 1008 | else |
| 1009 | return display_string_using_iconv (str, narrow_p, len, |
| 1010 | port, strategy); |
| 1011 | } |
| 1012 | |
| 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.) */ |
| 1016 | static int |
| 1017 | display_character (scm_t_wchar ch, SCM port, |
| 1018 | scm_t_string_failed_conversion_handler strategy) |
| 1019 | { |
| 1020 | return display_string (&ch, 0, 1, port, strategy) == 1; |
| 1021 | } |
| 1022 | |
| 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. */ |
| 1026 | static int |
| 1027 | write_combining_character (scm_t_wchar ch, SCM port) |
| 1028 | { |
| 1029 | scm_t_wchar str[2]; |
| 1030 | |
| 1031 | str[0] = SCM_CODEPOINT_DOTTED_CIRCLE; |
| 1032 | str[1] = ch; |
| 1033 | |
| 1034 | return display_string (str, 0, 2, port, iconveh_error) == 2; |
| 1035 | } |
| 1036 | |
| 1037 | /* Write CH to PORT in its escaped form, using the string escape syntax |
| 1038 | if STRING_ESCAPES_P is non-zero. */ |
| 1039 | static void |
| 1040 | write_character_escaped (scm_t_wchar ch, int string_escapes_p, SCM port) |
| 1041 | { |
| 1042 | if (string_escapes_p) |
| 1043 | { |
| 1044 | /* Represent CH using the in-string escape syntax. */ |
| 1045 | |
| 1046 | static const char hex[] = "0123456789abcdef"; |
| 1047 | static const char escapes[7] = "abtnvfr"; |
| 1048 | char buf[9]; |
| 1049 | |
| 1050 | if (ch >= 0x07 && ch <= 0x0D && ch != 0x0A) |
| 1051 | { |
| 1052 | /* Use special escapes for some C0 controls. */ |
| 1053 | buf[0] = '\\'; |
| 1054 | buf[1] = escapes[ch - 0x07]; |
| 1055 | scm_lfwrite (buf, 2, port); |
| 1056 | } |
| 1057 | else if (!SCM_R6RS_ESCAPES_P) |
| 1058 | { |
| 1059 | if (ch <= 0xFF) |
| 1060 | { |
| 1061 | buf[0] = '\\'; |
| 1062 | buf[1] = 'x'; |
| 1063 | buf[2] = hex[ch / 16]; |
| 1064 | buf[3] = hex[ch % 16]; |
| 1065 | scm_lfwrite (buf, 4, port); |
| 1066 | } |
| 1067 | else if (ch <= 0xFFFF) |
| 1068 | { |
| 1069 | buf[0] = '\\'; |
| 1070 | buf[1] = 'u'; |
| 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); |
| 1076 | } |
| 1077 | else if (ch > 0xFFFF) |
| 1078 | { |
| 1079 | buf[0] = '\\'; |
| 1080 | buf[1] = 'U'; |
| 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); |
| 1088 | } |
| 1089 | } |
| 1090 | else |
| 1091 | { |
| 1092 | /* Print an R6RS variable-length hex escape: "\xNNNN;". */ |
| 1093 | scm_t_wchar ch2 = ch; |
| 1094 | |
| 1095 | int i = 8; |
| 1096 | buf[i] = ';'; |
| 1097 | i --; |
| 1098 | if (ch == 0) |
| 1099 | buf[i--] = '0'; |
| 1100 | else |
| 1101 | while (ch2 > 0) |
| 1102 | { |
| 1103 | buf[i] = hex[ch2 & 0xF]; |
| 1104 | ch2 >>= 4; |
| 1105 | i --; |
| 1106 | } |
| 1107 | buf[i] = 'x'; |
| 1108 | i --; |
| 1109 | buf[i] = '\\'; |
| 1110 | scm_lfwrite (buf + i, 9 - i, port); |
| 1111 | } |
| 1112 | } |
| 1113 | else |
| 1114 | { |
| 1115 | /* Represent CH using the character escape syntax. */ |
| 1116 | const char *name; |
| 1117 | |
| 1118 | name = scm_i_charname (SCM_MAKE_CHAR (ch)); |
| 1119 | if (name != NULL) |
| 1120 | scm_puts (name, port); |
| 1121 | else |
| 1122 | PRINT_CHAR_ESCAPE (ch, port); |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 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. */ |
| 1130 | static void |
| 1131 | write_character (scm_t_wchar ch, SCM port, int string_escapes_p) |
| 1132 | { |
| 1133 | int printed = 0; |
| 1134 | scm_t_string_failed_conversion_handler strategy; |
| 1135 | |
| 1136 | strategy = PORT_CONVERSION_HANDLER (port); |
| 1137 | |
| 1138 | if (string_escapes_p) |
| 1139 | { |
| 1140 | /* Check if CH deserves special treatment. */ |
| 1141 | if (ch == '"' || ch == '\\') |
| 1142 | { |
| 1143 | display_character ('\\', port, iconveh_question_mark); |
| 1144 | display_character (ch, port, strategy); |
| 1145 | printed = 1; |
| 1146 | } |
| 1147 | else if (ch == '\n' && SCM_PRINT_ESCAPE_NEWLINES_P) |
| 1148 | { |
| 1149 | display_character ('\\', port, iconveh_question_mark); |
| 1150 | display_character ('n', port, strategy); |
| 1151 | printed = 1; |
| 1152 | } |
| 1153 | else if (ch == ' ' || ch == '\n') |
| 1154 | { |
| 1155 | display_character (ch, port, strategy); |
| 1156 | printed = 1; |
| 1157 | } |
| 1158 | } |
| 1159 | else |
| 1160 | { |
| 1161 | display_string ("#\\", 1, 2, port, iconveh_question_mark); |
| 1162 | |
| 1163 | if (uc_combining_class (ch) != UC_CCC_NR) |
| 1164 | /* Character is a combining character, so attempt to |
| 1165 | pretty-print it. */ |
| 1166 | printed = write_combining_character (ch, port); |
| 1167 | } |
| 1168 | |
| 1169 | if (!printed |
| 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); |
| 1178 | |
| 1179 | if (!printed) |
| 1180 | /* CH isn't graphic or cannot be represented in PORT's encoding. */ |
| 1181 | write_character_escaped (ch, string_escapes_p, port); |
| 1182 | } |
| 1183 | |
| 1184 | /* Display STR to PORT from START inclusive to END exclusive. */ |
| 1185 | void |
| 1186 | scm_i_display_substring (SCM str, size_t start, size_t end, SCM port) |
| 1187 | { |
| 1188 | int narrow_p; |
| 1189 | const char *buf; |
| 1190 | size_t len, printed; |
| 1191 | |
| 1192 | buf = scm_i_string_data (str); |
| 1193 | len = end - start; |
| 1194 | narrow_p = scm_i_is_narrow_string (str); |
| 1195 | buf += start * (narrow_p ? sizeof (char) : sizeof (scm_t_wchar)); |
| 1196 | |
| 1197 | printed = display_string (buf, narrow_p, end - start, port, |
| 1198 | PORT_CONVERSION_HANDLER (port)); |
| 1199 | |
| 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)); |
| 1204 | } |
| 1205 | |
| 1206 | \f |
| 1207 | /* Print an integer. |
| 1208 | */ |
| 1209 | |
| 1210 | void |
| 1211 | scm_intprint (scm_t_intmax n, int radix, SCM port) |
| 1212 | { |
| 1213 | char num_buf[SCM_INTBUFLEN]; |
| 1214 | scm_lfwrite (num_buf, scm_iint2str (n, radix, num_buf), port); |
| 1215 | } |
| 1216 | |
| 1217 | void |
| 1218 | scm_uintprint (scm_t_uintmax n, int radix, SCM port) |
| 1219 | { |
| 1220 | char num_buf[SCM_INTBUFLEN]; |
| 1221 | scm_lfwrite (num_buf, scm_iuint2str (n, radix, num_buf), port); |
| 1222 | } |
| 1223 | |
| 1224 | /* Print an object of unrecognized type. |
| 1225 | */ |
| 1226 | |
| 1227 | void |
| 1228 | scm_ipruk (char *hdr, SCM ptr, SCM port) |
| 1229 | { |
| 1230 | scm_puts ("#<unknown-", port); |
| 1231 | scm_puts (hdr, port); |
| 1232 | if (1) /* (scm_in_heap_p (ptr)) */ /* FIXME */ |
| 1233 | { |
| 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); |
| 1239 | } |
| 1240 | scm_puts (" 0x", port); |
| 1241 | scm_uintprint (SCM_UNPACK (ptr), 16, port); |
| 1242 | scm_putc ('>', port); |
| 1243 | } |
| 1244 | |
| 1245 | |
| 1246 | /* Print a list. |
| 1247 | */ |
| 1248 | void |
| 1249 | scm_iprlist (char *hdr, SCM exp, int tlr, SCM port, scm_print_state *pstate) |
| 1250 | { |
| 1251 | register SCM hare, tortoise; |
| 1252 | long floor = pstate->top - 2; |
| 1253 | scm_puts (hdr, port); |
| 1254 | /* CHECK_INTS; */ |
| 1255 | if (pstate->fancyp) |
| 1256 | goto fancy_printing; |
| 1257 | |
| 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); |
| 1261 | tortoise = exp; |
| 1262 | while (scm_is_pair (hare)) |
| 1263 | { |
| 1264 | if (scm_is_eq (hare, tortoise)) |
| 1265 | goto fancy_printing; |
| 1266 | hare = SCM_CDR (hare); |
| 1267 | if (!scm_is_pair (hare)) |
| 1268 | break; |
| 1269 | hare = SCM_CDR (hare); |
| 1270 | tortoise = SCM_CDR (tortoise); |
| 1271 | } |
| 1272 | |
| 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)) |
| 1276 | { |
| 1277 | register long i; |
| 1278 | |
| 1279 | for (i = floor; i >= 0; --i) |
| 1280 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
| 1281 | goto circref; |
| 1282 | PUSH_REF (pstate, exp); |
| 1283 | scm_putc (' ', port); |
| 1284 | /* CHECK_INTS; */ |
| 1285 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
| 1286 | } |
| 1287 | if (!SCM_NULL_OR_NIL_P (exp)) |
| 1288 | { |
| 1289 | scm_puts (" . ", port); |
| 1290 | scm_iprin1 (exp, port, pstate); |
| 1291 | } |
| 1292 | |
| 1293 | end: |
| 1294 | scm_putc (tlr, port); |
| 1295 | pstate->top = floor + 2; |
| 1296 | return; |
| 1297 | |
| 1298 | fancy_printing: |
| 1299 | { |
| 1300 | long n = pstate->length; |
| 1301 | |
| 1302 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
| 1303 | exp = SCM_CDR (exp); --n; |
| 1304 | for (; scm_is_pair (exp); exp = SCM_CDR (exp)) |
| 1305 | { |
| 1306 | register unsigned long i; |
| 1307 | |
| 1308 | for (i = 0; i < pstate->top; ++i) |
| 1309 | if (scm_is_eq (PSTATE_STACK_REF(pstate, i), exp)) |
| 1310 | goto fancy_circref; |
| 1311 | if (pstate->fancyp) |
| 1312 | { |
| 1313 | if (n == 0) |
| 1314 | { |
| 1315 | scm_puts (" ...", port); |
| 1316 | goto skip_tail; |
| 1317 | } |
| 1318 | else |
| 1319 | --n; |
| 1320 | } |
| 1321 | PUSH_REF(pstate, exp); |
| 1322 | ++pstate->list_offset; |
| 1323 | scm_putc (' ', port); |
| 1324 | /* CHECK_INTS; */ |
| 1325 | scm_iprin1 (SCM_CAR (exp), port, pstate); |
| 1326 | } |
| 1327 | } |
| 1328 | if (!SCM_NULL_OR_NIL_P (exp)) |
| 1329 | { |
| 1330 | scm_puts (" . ", port); |
| 1331 | scm_iprin1 (exp, port, pstate); |
| 1332 | } |
| 1333 | skip_tail: |
| 1334 | pstate->list_offset -= pstate->top - floor - 2; |
| 1335 | goto end; |
| 1336 | |
| 1337 | fancy_circref: |
| 1338 | pstate->list_offset -= pstate->top - floor - 2; |
| 1339 | |
| 1340 | circref: |
| 1341 | scm_puts (" . ", port); |
| 1342 | print_circref (port, pstate, exp); |
| 1343 | goto end; |
| 1344 | } |
| 1345 | |
| 1346 | \f |
| 1347 | |
| 1348 | int |
| 1349 | scm_valid_oport_value_p (SCM val) |
| 1350 | { |
| 1351 | return (SCM_OPOUTPORTP (val) |
| 1352 | || (SCM_PORT_WITH_PS_P (val) |
| 1353 | && SCM_OPOUTPORTP (SCM_PORT_WITH_PS_PORT (val)))); |
| 1354 | } |
| 1355 | |
| 1356 | /* SCM_GPROC(s_write, "write", 1, 1, 0, scm_write, g_write); */ |
| 1357 | |
| 1358 | SCM |
| 1359 | scm_write (SCM obj, SCM port) |
| 1360 | { |
| 1361 | if (SCM_UNBNDP (port)) |
| 1362 | port = scm_current_output_port (); |
| 1363 | |
| 1364 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_write); |
| 1365 | |
| 1366 | scm_prin1 (obj, port, 1); |
| 1367 | return SCM_UNSPECIFIED; |
| 1368 | } |
| 1369 | |
| 1370 | |
| 1371 | /* SCM_GPROC(s_display, "display", 1, 1, 0, scm_display, g_display); */ |
| 1372 | |
| 1373 | SCM |
| 1374 | scm_display (SCM obj, SCM port) |
| 1375 | { |
| 1376 | if (SCM_UNBNDP (port)) |
| 1377 | port = scm_current_output_port (); |
| 1378 | |
| 1379 | SCM_ASSERT (scm_valid_oport_value_p (port), port, SCM_ARG2, s_display); |
| 1380 | |
| 1381 | scm_prin1 (obj, port, 0); |
| 1382 | return SCM_UNSPECIFIED; |
| 1383 | } |
| 1384 | |
| 1385 | |
| 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" |
| 1393 | "@var{args}:\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 |
| 1400 | { |
| 1401 | SCM port, answer = SCM_UNSPECIFIED; |
| 1402 | int fReturnString = 0; |
| 1403 | int writingp; |
| 1404 | size_t start, p, end; |
| 1405 | |
| 1406 | if (scm_is_eq (destination, SCM_BOOL_T)) |
| 1407 | { |
| 1408 | destination = port = scm_current_output_port (); |
| 1409 | } |
| 1410 | else if (scm_is_false (destination)) |
| 1411 | { |
| 1412 | fReturnString = 1; |
| 1413 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
| 1414 | SCM_OPN | SCM_WRTNG, |
| 1415 | FUNC_NAME); |
| 1416 | destination = port; |
| 1417 | } |
| 1418 | else |
| 1419 | { |
| 1420 | SCM_VALIDATE_OPORT_VALUE (1, destination); |
| 1421 | port = SCM_COERCE_OUTPORT (destination); |
| 1422 | } |
| 1423 | SCM_VALIDATE_STRING (2, message); |
| 1424 | SCM_VALIDATE_REST_ARGUMENT (args); |
| 1425 | |
| 1426 | p = 0; |
| 1427 | start = 0; |
| 1428 | end = scm_i_string_length (message); |
| 1429 | for (p = start; p != end; ++p) |
| 1430 | if (scm_i_string_ref (message, p) == '~') |
| 1431 | { |
| 1432 | if (++p == end) |
| 1433 | break; |
| 1434 | |
| 1435 | switch (scm_i_string_ref (message, p)) |
| 1436 | { |
| 1437 | case 'A': case 'a': |
| 1438 | writingp = 0; |
| 1439 | break; |
| 1440 | case 'S': case 's': |
| 1441 | writingp = 1; |
| 1442 | break; |
| 1443 | case '~': |
| 1444 | scm_lfwrite_substr (message, start, p, port); |
| 1445 | start = p + 1; |
| 1446 | continue; |
| 1447 | case '%': |
| 1448 | scm_lfwrite_substr (message, start, p - 1, port); |
| 1449 | scm_newline (port); |
| 1450 | start = p + 1; |
| 1451 | continue; |
| 1452 | default: |
| 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)))); |
| 1455 | |
| 1456 | } |
| 1457 | |
| 1458 | |
| 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)))); |
| 1462 | |
| 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); |
| 1467 | start = p + 1; |
| 1468 | } |
| 1469 | |
| 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))); |
| 1474 | |
| 1475 | if (fReturnString) |
| 1476 | answer = scm_strport_to_string (destination); |
| 1477 | |
| 1478 | return scm_return_first (answer, message); |
| 1479 | } |
| 1480 | #undef FUNC_NAME |
| 1481 | |
| 1482 | |
| 1483 | SCM_DEFINE (scm_newline, "newline", 0, 1, 0, |
| 1484 | (SCM port), |
| 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 |
| 1488 | { |
| 1489 | if (SCM_UNBNDP (port)) |
| 1490 | port = scm_current_output_port (); |
| 1491 | |
| 1492 | SCM_VALIDATE_OPORT_VALUE (1, port); |
| 1493 | |
| 1494 | scm_putc ('\n', SCM_COERCE_OUTPORT (port)); |
| 1495 | return SCM_UNSPECIFIED; |
| 1496 | } |
| 1497 | #undef FUNC_NAME |
| 1498 | |
| 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 |
| 1503 | { |
| 1504 | if (SCM_UNBNDP (port)) |
| 1505 | port = scm_current_output_port (); |
| 1506 | |
| 1507 | SCM_VALIDATE_CHAR (1, chr); |
| 1508 | SCM_VALIDATE_OPORT_VALUE (2, port); |
| 1509 | |
| 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", |
| 1515 | port, chr); |
| 1516 | |
| 1517 | return SCM_UNSPECIFIED; |
| 1518 | } |
| 1519 | #undef FUNC_NAME |
| 1520 | |
| 1521 | \f |
| 1522 | |
| 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. |
| 1529 | */ |
| 1530 | |
| 1531 | scm_t_bits scm_tc16_port_with_ps; |
| 1532 | |
| 1533 | /* Print exactly as the port itself would */ |
| 1534 | |
| 1535 | static int |
| 1536 | port_with_ps_print (SCM obj, SCM port, scm_print_state *pstate) |
| 1537 | { |
| 1538 | obj = SCM_PORT_WITH_PS_PORT (obj); |
| 1539 | return scm_ptobs[SCM_PTOBNUM (obj)].print (obj, port, pstate); |
| 1540 | } |
| 1541 | |
| 1542 | SCM |
| 1543 | scm_printer_apply (SCM proc, SCM exp, SCM port, scm_print_state *pstate) |
| 1544 | { |
| 1545 | pstate->revealed = 1; |
| 1546 | return scm_call_2 (proc, exp, |
| 1547 | scm_i_port_with_print_state (port, pstate->handle)); |
| 1548 | } |
| 1549 | |
| 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 |
| 1557 | { |
| 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); |
| 1562 | } |
| 1563 | #undef FUNC_NAME |
| 1564 | |
| 1565 | SCM_DEFINE (scm_get_print_state, "get-print-state", 1, 0, 0, |
| 1566 | (SCM port), |
| 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 |
| 1570 | { |
| 1571 | if (SCM_PORT_WITH_PS_P (port)) |
| 1572 | return SCM_PORT_WITH_PS_PS (port); |
| 1573 | if (SCM_OUTPUT_PORT_P (port)) |
| 1574 | return SCM_BOOL_F; |
| 1575 | SCM_WRONG_TYPE_ARG (1, port); |
| 1576 | } |
| 1577 | #undef FUNC_NAME |
| 1578 | |
| 1579 | \f |
| 1580 | |
| 1581 | void |
| 1582 | scm_init_print () |
| 1583 | { |
| 1584 | SCM type; |
| 1585 | |
| 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), |
| 1589 | SCM_BOOL_F); |
| 1590 | scm_set_struct_vtable_name_x (type, scm_from_latin1_symbol ("print-state")); |
| 1591 | scm_print_state_vtable = type; |
| 1592 | |
| 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); |
| 1596 | |
| 1597 | #include "libguile/print.x" |
| 1598 | |
| 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); |
| 1605 | } |
| 1606 | |
| 1607 | /* |
| 1608 | Local Variables: |
| 1609 | c-file-style: "gnu" |
| 1610 | End: |
| 1611 | */ |