| 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001,2002, 2003, 2005, 2006, 2009, 2010, 2011 Free Software Foundation, Inc. |
| 2 | * |
| 3 | * This library is free software; you can redistribute it and/or |
| 4 | * modify it under the terms of the GNU Lesser General Public License |
| 5 | * as published by the Free Software Foundation; either version 3 of |
| 6 | * the License, or (at your option) any later version. |
| 7 | * |
| 8 | * This library is distributed in the hope that it will be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * Lesser General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU Lesser General Public |
| 14 | * License along with this library; if not, write to the Free Software |
| 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 16 | * 02110-1301 USA |
| 17 | */ |
| 18 | |
| 19 | |
| 20 | \f |
| 21 | |
| 22 | #ifdef HAVE_CONFIG_H |
| 23 | # include <config.h> |
| 24 | #endif |
| 25 | |
| 26 | #include "libguile/_scm.h" |
| 27 | |
| 28 | #include <stdio.h> |
| 29 | #ifdef HAVE_UNISTD_H |
| 30 | #include <unistd.h> |
| 31 | #endif |
| 32 | |
| 33 | #include "libguile/bytevectors.h" |
| 34 | #include "libguile/eval.h" |
| 35 | #include "libguile/ports.h" |
| 36 | #include "libguile/read.h" |
| 37 | #include "libguile/root.h" |
| 38 | #include "libguile/strings.h" |
| 39 | #include "libguile/modules.h" |
| 40 | #include "libguile/validate.h" |
| 41 | #include "libguile/deprecation.h" |
| 42 | #include "libguile/srfi-4.h" |
| 43 | |
| 44 | #include "libguile/strports.h" |
| 45 | |
| 46 | #ifdef HAVE_STRING_H |
| 47 | #include <string.h> |
| 48 | #endif |
| 49 | |
| 50 | \f |
| 51 | |
| 52 | /* {Ports - string ports} |
| 53 | * |
| 54 | */ |
| 55 | |
| 56 | /* NOTES: |
| 57 | |
| 58 | write_buf/write_end point to the ends of the allocated bytevector. |
| 59 | read_buf/read_end in principle point to the part of the bytevector which |
| 60 | has been written to, but this is only updated after a flush. |
| 61 | read_pos and write_pos in principle should be equal, but this is only true |
| 62 | when rw_active is SCM_PORT_NEITHER. |
| 63 | |
| 64 | ENHANCE-ME - output blocks: |
| 65 | |
| 66 | The current code keeps an output string as a single block. That means |
| 67 | when the size is increased the entire old contents must be copied. It'd |
| 68 | be more efficient to begin a new block when the old one is full, so |
| 69 | there's no re-copying of previous data. |
| 70 | |
| 71 | To make seeking efficient, keeping the pieces in a vector might be best, |
| 72 | though appending is probably the most common operation. The size of each |
| 73 | block could be progressively increased, so the bigger the string the |
| 74 | bigger the blocks. |
| 75 | |
| 76 | When `get-output-string' is called the blocks have to be coalesced into a |
| 77 | string, the result could be kept as a single big block. If blocks were |
| 78 | strings then `get-output-string' could notice when there's just one and |
| 79 | return that with a copy-on-write (though repeated calls to |
| 80 | `get-output-string' are probably unlikely). |
| 81 | |
| 82 | Another possibility would be to extend the port mechanism to let SCM |
| 83 | strings come through directly from `display' and friends. That way if a |
| 84 | big string is written it can be kept as a copy-on-write, saving time |
| 85 | copying and maybe saving some space. */ |
| 86 | |
| 87 | |
| 88 | scm_t_bits scm_tc16_strport; |
| 89 | |
| 90 | |
| 91 | static int |
| 92 | stfill_buffer (SCM port) |
| 93 | { |
| 94 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
| 95 | |
| 96 | if (pt->read_pos >= pt->read_end) |
| 97 | return EOF; |
| 98 | else |
| 99 | return scm_return_first_int (*pt->read_pos, port); |
| 100 | } |
| 101 | |
| 102 | /* Change the size of a port's bytevector to NEW_SIZE. This doesn't |
| 103 | change `read_buf_size'. */ |
| 104 | static void |
| 105 | st_resize_port (scm_t_port *pt, scm_t_off new_size) |
| 106 | { |
| 107 | SCM old_stream = SCM_PACK (pt->stream); |
| 108 | const signed char *src = SCM_BYTEVECTOR_CONTENTS (old_stream); |
| 109 | SCM new_stream = scm_c_make_bytevector (new_size); |
| 110 | signed char *dst = SCM_BYTEVECTOR_CONTENTS (new_stream); |
| 111 | unsigned long int old_size = SCM_BYTEVECTOR_LENGTH (old_stream); |
| 112 | unsigned long int min_size = min (old_size, new_size); |
| 113 | |
| 114 | scm_t_off index = pt->write_pos - pt->write_buf; |
| 115 | |
| 116 | pt->write_buf_size = new_size; |
| 117 | |
| 118 | memcpy (dst, src, min_size); |
| 119 | |
| 120 | scm_remember_upto_here_1 (old_stream); |
| 121 | |
| 122 | /* reset buffer. */ |
| 123 | { |
| 124 | pt->stream = SCM_UNPACK (new_stream); |
| 125 | pt->read_buf = pt->write_buf = (unsigned char *)dst; |
| 126 | pt->read_pos = pt->write_pos = pt->write_buf + index; |
| 127 | pt->write_end = pt->write_buf + pt->write_buf_size; |
| 128 | pt->read_end = pt->read_buf + pt->read_buf_size; |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | /* Ensure that `write_pos' < `write_end' by enlarging the buffer when |
| 133 | necessary. Update `read_buf' to account for written chars. The |
| 134 | buffer is enlarged geometrically. */ |
| 135 | static void |
| 136 | st_flush (SCM port) |
| 137 | { |
| 138 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
| 139 | |
| 140 | if (pt->write_pos == pt->write_end) |
| 141 | st_resize_port (pt, pt->write_buf_size * 2); |
| 142 | |
| 143 | pt->read_pos = pt->write_pos; |
| 144 | if (pt->read_pos > pt->read_end) |
| 145 | { |
| 146 | pt->read_end = (unsigned char *) pt->read_pos; |
| 147 | pt->read_buf_size = pt->read_end - pt->read_buf; |
| 148 | } |
| 149 | pt->rw_active = SCM_PORT_NEITHER; |
| 150 | } |
| 151 | |
| 152 | static void |
| 153 | st_write (SCM port, const void *data, size_t size) |
| 154 | { |
| 155 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
| 156 | const char *input = (char *) data; |
| 157 | |
| 158 | while (size > 0) |
| 159 | { |
| 160 | int space = pt->write_end - pt->write_pos; |
| 161 | int write_len = (size > space) ? space : size; |
| 162 | |
| 163 | memcpy ((char *) pt->write_pos, input, write_len); |
| 164 | pt->write_pos += write_len; |
| 165 | size -= write_len; |
| 166 | input += write_len; |
| 167 | if (write_len == space) |
| 168 | st_flush (port); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | static void |
| 173 | st_end_input (SCM port, int offset) |
| 174 | { |
| 175 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
| 176 | |
| 177 | if (pt->read_pos - pt->read_buf < offset) |
| 178 | scm_misc_error ("st_end_input", "negative position", SCM_EOL); |
| 179 | |
| 180 | pt->write_pos = (unsigned char *) (pt->read_pos = pt->read_pos - offset); |
| 181 | pt->rw_active = SCM_PORT_NEITHER; |
| 182 | } |
| 183 | |
| 184 | static scm_t_off |
| 185 | st_seek (SCM port, scm_t_off offset, int whence) |
| 186 | { |
| 187 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
| 188 | scm_t_off target; |
| 189 | |
| 190 | if (pt->rw_active == SCM_PORT_READ && offset == 0 && whence == SEEK_CUR) |
| 191 | /* special case to avoid disturbing the unread-char buffer. */ |
| 192 | { |
| 193 | if (pt->read_buf == pt->putback_buf) |
| 194 | { |
| 195 | target = pt->saved_read_pos - pt->saved_read_buf |
| 196 | - (pt->read_end - pt->read_pos); |
| 197 | } |
| 198 | else |
| 199 | { |
| 200 | target = pt->read_pos - pt->read_buf; |
| 201 | } |
| 202 | } |
| 203 | else |
| 204 | /* all other cases. */ |
| 205 | { |
| 206 | if (pt->rw_active == SCM_PORT_WRITE) |
| 207 | st_flush (port); |
| 208 | |
| 209 | if (pt->rw_active == SCM_PORT_READ) |
| 210 | scm_end_input_unlocked (port); |
| 211 | |
| 212 | switch (whence) |
| 213 | { |
| 214 | case SEEK_CUR: |
| 215 | target = pt->read_pos - pt->read_buf + offset; |
| 216 | break; |
| 217 | case SEEK_END: |
| 218 | target = pt->read_end - pt->read_buf + offset; |
| 219 | break; |
| 220 | default: /* SEEK_SET */ |
| 221 | target = offset; |
| 222 | break; |
| 223 | } |
| 224 | |
| 225 | if (target < 0) |
| 226 | scm_misc_error ("st_seek", "negative offset", SCM_EOL); |
| 227 | |
| 228 | if (target >= pt->write_buf_size) |
| 229 | { |
| 230 | if (!(SCM_CELL_WORD_0 (port) & SCM_WRTNG)) |
| 231 | { |
| 232 | if (target > pt->write_buf_size) |
| 233 | { |
| 234 | scm_misc_error ("st_seek", |
| 235 | "seek past end of read-only strport", |
| 236 | SCM_EOL); |
| 237 | } |
| 238 | } |
| 239 | else if (target == pt->write_buf_size) |
| 240 | st_resize_port (pt, target * 2); |
| 241 | } |
| 242 | pt->read_pos = pt->write_pos = pt->read_buf + target; |
| 243 | if (pt->read_pos > pt->read_end) |
| 244 | { |
| 245 | pt->read_end = (unsigned char *) pt->read_pos; |
| 246 | pt->read_buf_size = pt->read_end - pt->read_buf; |
| 247 | } |
| 248 | } |
| 249 | return target; |
| 250 | } |
| 251 | |
| 252 | static void |
| 253 | st_truncate (SCM port, scm_t_off length) |
| 254 | { |
| 255 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
| 256 | |
| 257 | if (length > pt->write_buf_size) |
| 258 | st_resize_port (pt, length); |
| 259 | |
| 260 | pt->read_buf_size = length; |
| 261 | pt->read_end = pt->read_buf + length; |
| 262 | if (pt->read_pos > pt->read_end) |
| 263 | pt->read_pos = pt->read_end; |
| 264 | |
| 265 | if (pt->write_pos > pt->read_end) |
| 266 | pt->write_pos = pt->read_end; |
| 267 | } |
| 268 | |
| 269 | /* The initial size in bytes of a string port's buffer. */ |
| 270 | #define INITIAL_BUFFER_SIZE 128 |
| 271 | |
| 272 | /* Return a new string port with MODES. If STR is #f, a new backing |
| 273 | buffer is allocated; otherwise STR must be a string and a copy of it |
| 274 | serves as the buffer for the new port. */ |
| 275 | SCM |
| 276 | scm_mkstrport (SCM pos, SCM str, long modes, const char *caller) |
| 277 | { |
| 278 | SCM z, buf; |
| 279 | scm_t_port *pt; |
| 280 | const char *encoding; |
| 281 | size_t read_buf_size, str_len, c_pos; |
| 282 | char *c_buf; |
| 283 | |
| 284 | if (!((modes & SCM_WRTNG) || (modes & SCM_RDNG))) |
| 285 | scm_misc_error ("scm_mkstrport", "port must read or write", SCM_EOL); |
| 286 | |
| 287 | encoding = scm_i_default_port_encoding (); |
| 288 | |
| 289 | if (scm_is_false (str)) |
| 290 | { |
| 291 | /* Allocate a new buffer to write to. */ |
| 292 | str_len = INITIAL_BUFFER_SIZE; |
| 293 | buf = scm_c_make_bytevector (str_len); |
| 294 | c_buf = (char *) SCM_BYTEVECTOR_CONTENTS (buf); |
| 295 | |
| 296 | /* Reset `read_buf_size'. It will contain the actual number of |
| 297 | bytes written to the port. */ |
| 298 | read_buf_size = 0; |
| 299 | c_pos = 0; |
| 300 | } |
| 301 | else |
| 302 | { |
| 303 | /* STR is a string. */ |
| 304 | char *copy; |
| 305 | |
| 306 | SCM_ASSERT (scm_is_string (str), str, SCM_ARG1, caller); |
| 307 | |
| 308 | /* Create a copy of STR in ENCODING. */ |
| 309 | copy = scm_to_stringn (str, &str_len, encoding, |
| 310 | SCM_FAILED_CONVERSION_ERROR); |
| 311 | buf = scm_c_make_bytevector (str_len); |
| 312 | c_buf = (char *) SCM_BYTEVECTOR_CONTENTS (buf); |
| 313 | memcpy (c_buf, copy, str_len); |
| 314 | free (copy); |
| 315 | |
| 316 | c_pos = scm_to_unsigned_integer (pos, 0, str_len); |
| 317 | read_buf_size = str_len; |
| 318 | } |
| 319 | |
| 320 | z = scm_c_make_port_with_encoding (scm_tc16_strport, modes, |
| 321 | encoding, |
| 322 | SCM_FAILED_CONVERSION_ERROR, |
| 323 | (scm_t_bits)buf); |
| 324 | |
| 325 | pt = SCM_PTAB_ENTRY (z); |
| 326 | pt->write_buf = pt->read_buf = (unsigned char *) c_buf; |
| 327 | pt->read_pos = pt->write_pos = pt->read_buf + c_pos; |
| 328 | pt->read_buf_size = read_buf_size; |
| 329 | pt->write_buf_size = str_len; |
| 330 | pt->write_end = pt->read_end = pt->read_buf + pt->read_buf_size; |
| 331 | pt->rw_random = 1; |
| 332 | |
| 333 | /* Ensure WRITE_POS is writable. */ |
| 334 | if ((modes & SCM_WRTNG) && pt->write_pos == pt->write_end) |
| 335 | st_flush (z); |
| 336 | |
| 337 | return z; |
| 338 | } |
| 339 | |
| 340 | /* Create a new string from the buffer of PORT, a string port, converting from |
| 341 | PORT's encoding to the standard string representation. */ |
| 342 | SCM |
| 343 | scm_strport_to_string (SCM port) |
| 344 | { |
| 345 | SCM str; |
| 346 | scm_t_port *pt = SCM_PTAB_ENTRY (port); |
| 347 | |
| 348 | if (pt->rw_active == SCM_PORT_WRITE) |
| 349 | st_flush (port); |
| 350 | |
| 351 | if (pt->read_buf_size == 0) |
| 352 | return scm_nullstr; |
| 353 | |
| 354 | if (pt->encoding == NULL) |
| 355 | { |
| 356 | char *buf; |
| 357 | str = scm_i_make_string (pt->read_buf_size, &buf, 0); |
| 358 | memcpy (buf, pt->read_buf, pt->read_buf_size); |
| 359 | } |
| 360 | else |
| 361 | str = scm_from_stringn ((char *)pt->read_buf, pt->read_buf_size, |
| 362 | pt->encoding, pt->ilseq_handler); |
| 363 | scm_remember_upto_here_1 (port); |
| 364 | return str; |
| 365 | } |
| 366 | |
| 367 | SCM_DEFINE (scm_object_to_string, "object->string", 1, 1, 0, |
| 368 | (SCM obj, SCM printer), |
| 369 | "Return a Scheme string obtained by printing @var{obj}.\n" |
| 370 | "Printing function can be specified by the optional second\n" |
| 371 | "argument @var{printer} (default: @code{write}).") |
| 372 | #define FUNC_NAME s_scm_object_to_string |
| 373 | { |
| 374 | SCM port, result; |
| 375 | |
| 376 | if (!SCM_UNBNDP (printer)) |
| 377 | SCM_VALIDATE_PROC (2, printer); |
| 378 | |
| 379 | port = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
| 380 | SCM_OPN | SCM_WRTNG, FUNC_NAME); |
| 381 | |
| 382 | if (SCM_UNBNDP (printer)) |
| 383 | scm_write (obj, port); |
| 384 | else |
| 385 | scm_call_2 (printer, obj, port); |
| 386 | |
| 387 | result = scm_strport_to_string (port); |
| 388 | |
| 389 | /* Explicitly close PORT so that the iconv CDs associated with it are |
| 390 | deallocated right away. This is important because CDs use a lot of |
| 391 | memory that's not visible to the GC, so not freeing them can lead |
| 392 | to almost large heap usage. See |
| 393 | <http://wingolog.org/archives/2011/02/25/ports-weaks-gc-and-dark-matter> |
| 394 | for details. */ |
| 395 | scm_close_port (port); |
| 396 | |
| 397 | return result; |
| 398 | } |
| 399 | #undef FUNC_NAME |
| 400 | |
| 401 | SCM_DEFINE (scm_call_with_output_string, "call-with-output-string", 1, 0, 0, |
| 402 | (SCM proc), |
| 403 | "Calls the one-argument procedure @var{proc} with a newly created output\n" |
| 404 | "port. When the function returns, the string composed of the characters\n" |
| 405 | "written into the port is returned.") |
| 406 | #define FUNC_NAME s_scm_call_with_output_string |
| 407 | { |
| 408 | SCM p; |
| 409 | |
| 410 | p = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
| 411 | SCM_OPN | SCM_WRTNG, |
| 412 | FUNC_NAME); |
| 413 | scm_call_1 (proc, p); |
| 414 | |
| 415 | return scm_get_output_string (p); |
| 416 | } |
| 417 | #undef FUNC_NAME |
| 418 | |
| 419 | SCM_DEFINE (scm_call_with_input_string, "call-with-input-string", 2, 0, 0, |
| 420 | (SCM string, SCM proc), |
| 421 | "Calls the one-argument procedure @var{proc} with a newly\n" |
| 422 | "created input port from which @var{string}'s contents may be\n" |
| 423 | "read. The value yielded by the @var{proc} is returned.") |
| 424 | #define FUNC_NAME s_scm_call_with_input_string |
| 425 | { |
| 426 | SCM p = scm_mkstrport(SCM_INUM0, string, SCM_OPN | SCM_RDNG, FUNC_NAME); |
| 427 | return scm_call_1 (proc, p); |
| 428 | } |
| 429 | #undef FUNC_NAME |
| 430 | |
| 431 | SCM_DEFINE (scm_open_input_string, "open-input-string", 1, 0, 0, |
| 432 | (SCM str), |
| 433 | "Take a string and return an input port that delivers characters\n" |
| 434 | "from the string. The port can be closed by\n" |
| 435 | "@code{close-input-port}, though its storage will be reclaimed\n" |
| 436 | "by the garbage collector if it becomes inaccessible.") |
| 437 | #define FUNC_NAME s_scm_open_input_string |
| 438 | { |
| 439 | SCM p = scm_mkstrport(SCM_INUM0, str, SCM_OPN | SCM_RDNG, FUNC_NAME); |
| 440 | return p; |
| 441 | } |
| 442 | #undef FUNC_NAME |
| 443 | |
| 444 | SCM_DEFINE (scm_open_output_string, "open-output-string", 0, 0, 0, |
| 445 | (void), |
| 446 | "Return an output port that will accumulate characters for\n" |
| 447 | "retrieval by @code{get-output-string}. The port can be closed\n" |
| 448 | "by the procedure @code{close-output-port}, though its storage\n" |
| 449 | "will be reclaimed by the garbage collector if it becomes\n" |
| 450 | "inaccessible.") |
| 451 | #define FUNC_NAME s_scm_open_output_string |
| 452 | { |
| 453 | SCM p; |
| 454 | |
| 455 | p = scm_mkstrport (SCM_INUM0, SCM_BOOL_F, |
| 456 | SCM_OPN | SCM_WRTNG, |
| 457 | FUNC_NAME); |
| 458 | return p; |
| 459 | } |
| 460 | #undef FUNC_NAME |
| 461 | |
| 462 | SCM_DEFINE (scm_get_output_string, "get-output-string", 1, 0, 0, |
| 463 | (SCM port), |
| 464 | "Given an output port created by @code{open-output-string},\n" |
| 465 | "return a string consisting of the characters that have been\n" |
| 466 | "output to the port so far.") |
| 467 | #define FUNC_NAME s_scm_get_output_string |
| 468 | { |
| 469 | SCM_VALIDATE_OPOUTSTRPORT (1, port); |
| 470 | return scm_strport_to_string (port); |
| 471 | } |
| 472 | #undef FUNC_NAME |
| 473 | |
| 474 | |
| 475 | /* Given a null-terminated string EXPR containing a Scheme expression |
| 476 | read it, and return it as an SCM value. */ |
| 477 | SCM |
| 478 | scm_c_read_string (const char *expr) |
| 479 | { |
| 480 | SCM port = scm_mkstrport (SCM_INUM0, |
| 481 | scm_from_locale_string (expr), |
| 482 | SCM_OPN | SCM_RDNG, |
| 483 | "scm_c_read_string"); |
| 484 | SCM form; |
| 485 | |
| 486 | form = scm_read (port); |
| 487 | |
| 488 | scm_close_port (port); |
| 489 | return form; |
| 490 | } |
| 491 | |
| 492 | /* Given a null-terminated string EXPR containing Scheme program text, |
| 493 | evaluate it, and return the result of the last expression evaluated. */ |
| 494 | SCM |
| 495 | scm_c_eval_string (const char *expr) |
| 496 | { |
| 497 | return scm_eval_string (scm_from_locale_string (expr)); |
| 498 | } |
| 499 | |
| 500 | SCM |
| 501 | scm_c_eval_string_in_module (const char *expr, SCM module) |
| 502 | { |
| 503 | return scm_eval_string_in_module (scm_from_locale_string (expr), module); |
| 504 | } |
| 505 | |
| 506 | |
| 507 | SCM_DEFINE (scm_eval_string_in_module, "eval-string", 1, 1, 0, |
| 508 | (SCM string, SCM module), |
| 509 | "Evaluate @var{string} as the text representation of a Scheme\n" |
| 510 | "form or forms, and return whatever value they produce.\n" |
| 511 | "Evaluation takes place in the given module, or the current\n" |
| 512 | "module when no module is given.\n" |
| 513 | "While the code is evaluated, the given module is made the\n" |
| 514 | "current one. The current module is restored when this\n" |
| 515 | "procedure returns.") |
| 516 | #define FUNC_NAME s_scm_eval_string_in_module |
| 517 | { |
| 518 | static SCM eval_string = SCM_BOOL_F, k_module = SCM_BOOL_F; |
| 519 | |
| 520 | if (scm_is_false (eval_string)) |
| 521 | { |
| 522 | eval_string = scm_c_public_lookup ("ice-9 eval-string", "eval-string"); |
| 523 | k_module = scm_from_locale_keyword ("module"); |
| 524 | } |
| 525 | |
| 526 | if (SCM_UNBNDP (module)) |
| 527 | module = scm_current_module (); |
| 528 | else |
| 529 | SCM_VALIDATE_MODULE (2, module); |
| 530 | |
| 531 | return scm_call_3 (scm_variable_ref (eval_string), string, k_module, module); |
| 532 | } |
| 533 | #undef FUNC_NAME |
| 534 | |
| 535 | SCM |
| 536 | scm_eval_string (SCM string) |
| 537 | { |
| 538 | return scm_eval_string_in_module (string, SCM_UNDEFINED); |
| 539 | } |
| 540 | |
| 541 | static scm_t_bits |
| 542 | scm_make_stptob () |
| 543 | { |
| 544 | scm_t_bits tc = scm_make_port_type ("string", stfill_buffer, st_write); |
| 545 | |
| 546 | scm_set_port_end_input (tc, st_end_input); |
| 547 | scm_set_port_flush (tc, st_flush); |
| 548 | scm_set_port_seek (tc, st_seek); |
| 549 | scm_set_port_truncate (tc, st_truncate); |
| 550 | |
| 551 | return tc; |
| 552 | } |
| 553 | |
| 554 | void |
| 555 | scm_init_strports () |
| 556 | { |
| 557 | scm_tc16_strport = scm_make_stptob (); |
| 558 | |
| 559 | #include "libguile/strports.x" |
| 560 | } |
| 561 | |
| 562 | |
| 563 | /* |
| 564 | Local Variables: |
| 565 | c-file-style: "gnu" |
| 566 | End: |
| 567 | */ |