428
+ − 1 /* Generic stream implementation -- header file.
+ − 2 Copyright (C) 1995 Free Software Foundation, Inc.
788
+ − 3 Copyright (C) 1996, 2001, 2002 Ben Wing.
428
+ − 4
+ − 5 This file is part of XEmacs.
+ − 6
+ − 7 XEmacs is free software; you can redistribute it and/or modify it
+ − 8 under the terms of the GNU General Public License as published by the
+ − 9 Free Software Foundation; either version 2, or (at your option) any
+ − 10 later version.
+ − 11
+ − 12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ − 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ − 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ − 15 for more details.
+ − 16
+ − 17 You should have received a copy of the GNU General Public License
+ − 18 along with XEmacs; see the file COPYING. If not, write to
+ − 19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ − 20 Boston, MA 02111-1307, USA. */
+ − 21
+ − 22 /* Synched up with: Not in FSF. */
+ − 23
+ − 24 /* Written by Ben Wing. */
+ − 25
440
+ − 26 #ifndef INCLUDED_lstream_h_
+ − 27 #define INCLUDED_lstream_h_
428
+ − 28
+ − 29 /************************************************************************/
+ − 30 /* definition of Lstream object */
+ − 31 /************************************************************************/
+ − 32
+ − 33 DECLARE_LRECORD (lstream, struct lstream);
+ − 34 #define XLSTREAM(x) XRECORD (x, lstream, struct lstream)
617
+ − 35 #define wrap_lstream(p) wrap_record (p, lstream)
428
+ − 36 #define LSTREAMP(x) RECORDP (x, lstream)
+ − 37 /* #define CHECK_LSTREAM(x) CHECK_RECORD (x, lstream)
+ − 38 Lstream pointers should never escape to the Lisp level, so
+ − 39 functions should not be doing this. */
+ − 40
+ − 41 #ifndef EOF
+ − 42 #define EOF (-1)
+ − 43 #endif
+ − 44
771
+ − 45 /* There have been some arguments over the what the type should be that
665
+ − 46 specifies a count of bytes in a data block to be written out or read in,
+ − 47 using Lstream_read(), Lstream_write(), and related functions.
+ − 48 Originally it was long, which worked fine; Martin "corrected" these to
+ − 49 size_t and ssize_t on the grounds that this is theoretically cleaner and
+ − 50 is in keeping with the C standards. Unfortunately, this practice is
+ − 51 horribly error-prone due to design flaws in the way that mixed
+ − 52 signed/unsigned arithmetic happens. In fact, by doing this change,
+ − 53 Martin introduced a subtle but fatal error that caused the operation of
+ − 54 sending large mail messages to the SMTP server under Windows to fail.
+ − 55 By putting all values back to be signed, avoiding any signed/unsigned
+ − 56 mixing, the bug immediately went away. The type then in use was
+ − 57 Lstream_Data_Count, so that it be reverted cleanly if a vote came to
+ − 58 that. Now it is Bytecount.
+ − 59
+ − 60 Some earlier comments about why the type must be signed: This MUST BE
+ − 61 SIGNED, since it also is used in functions that return the number of
+ − 62 bytes actually read to or written from in an operation, and these
+ − 63 functions can return -1 to signal error.
462
+ − 64
+ − 65 Note that the standard Unix read() and write() functions define the
+ − 66 count going in as a size_t, which is UNSIGNED, and the count going
+ − 67 out as an ssize_t, which is SIGNED. This is a horrible design
+ − 68 flaw. Not only is it highly likely to lead to logic errors when a
+ − 69 -1 gets interpreted as a large positive number, but operations are
+ − 70 bound to fail in all sorts of horrible ways when a number in the
+ − 71 upper-half of the size_t range is passed in -- this number is
+ − 72 unrepresentable as an ssize_t, so code that checks to see how many
+ − 73 bytes are actually written (which is mandatory if you are dealing
+ − 74 with certain types of devices) will get completely screwed up.
771
+ − 75
665
+ − 76 --ben
462
+ − 77 */
428
+ − 78 typedef enum lstream_buffering
+ − 79 {
+ − 80 /* No buffering. */
+ − 81 LSTREAM_UNBUFFERED,
+ − 82 /* Buffer until a '\n' character is reached. */
+ − 83 LSTREAM_LINE_BUFFERED,
+ − 84 /* Buffer in standard-size (i.e. 512-byte) blocks. */
+ − 85 LSTREAM_BLOCK_BUFFERED,
+ − 86 /* Buffer in blocks of a specified size. */
+ − 87 LSTREAM_BLOCKN_BUFFERED,
+ − 88 /* Buffer until the stream is closed (only applies to write-only
+ − 89 streams). Only one call to the stream writer will be made,
+ − 90 and that is when the stream is closed. */
+ − 91 LSTREAM_UNLIMITED
+ − 92 } Lstream_buffering;
+ − 93
771
+ − 94 #if 0
+ − 95
+ − 96 /* #### not currently implemented; correct EOF handling is quite tricky
+ − 97 in the presence of various levels of filtering streams, and simply
+ − 98 interpreting 0 as EOF works fairly well as long as the amount of
+ − 99 data you're attempting to read is large and you know whether the
+ − 100 source stream at the end of the chain is a pipe (or other blocking
+ − 101 source) or not. we really should fix this, though. */
+ − 102
+ − 103 /* Return values from Lstream_read(). We do NOT use the C lib trick
+ − 104 of returning 0 to maybe indicate EOF because that is simply too
+ − 105 random and error-prone. It is quite legitimate for there to be no
+ − 106 data available but no EOF, even when not in the presence of
+ − 107 non-blocking I/O. For example, decoding/encoding streams (and in
+ − 108 general, any type of filtering stream) may only be able to return
+ − 109 data after a certain amount of data on the other end is
+ − 110 available. */
+ − 111
+ − 112 #define LSTREAM_EOF -2
+ − 113
+ − 114 #endif /* 0 */
+ − 115
+ − 116 #define LSTREAM_ERROR -1
+ − 117
428
+ − 118 /* Methods defining how this stream works. Some may be undefined. */
+ − 119
+ − 120 /* We do not implement the seek/tell paradigm. I tried to do that,
+ − 121 but getting the semantics right in the presence of buffering is
+ − 122 extremely tricky and very error-prone and basically not worth it.
+ − 123 This is especially the case with complicated streams like
+ − 124 decoding streams -- the seek pointer in this case can't be a single
+ − 125 integer but has to be a whole complicated structure that records
+ − 126 all of the stream's state at the time.
+ − 127
+ − 128 Rewind semantics are generally easy to implement, so we do provide
+ − 129 a rewind method. Even rewind() may not be available on a stream,
+ − 130 however -- e.g. on process output. */
+ − 131
+ − 132 typedef struct lstream_implementation
+ − 133 {
442
+ − 134 const char *name;
665
+ − 135 Bytecount size; /* Number of additional bytes to be
814
+ − 136 allocated with this stream. Access this
+ − 137 data using Lstream_data(). */
1204
+ − 138
+ − 139 /* Description of the extra data (struct foo_lstream) attached to a
+ − 140 coding system. */
+ − 141 const struct sized_memory_description *extra_description;
+ − 142
428
+ − 143 /* Read some data from the stream's end and store it into DATA, which
+ − 144 can hold SIZE bytes. Return the number of bytes read. A return
+ − 145 value of 0 means no bytes can be read at this time. This may
+ − 146 be because of an EOF, or because there is a granularity greater
+ − 147 than one byte that the stream imposes on the returned data, and
+ − 148 SIZE is less than this granularity. (This will happen frequently
+ − 149 for streams that need to return whole characters, because
+ − 150 Lstream_read() calls the reader function repeatedly until it
+ − 151 has the number of bytes it wants or until 0 is returned.)
+ − 152 The lstream functions do not treat a 0 return as EOF or do
+ − 153 anything special; however, the calling function will interpret
+ − 154 any 0 it gets back as EOF. This will normally not happen unless
+ − 155 the caller calls Lstream_read() with a very small size.
+ − 156
+ − 157 This function can be NULL if the stream is output-only. */
442
+ − 158 /* The omniscient mly, blinded by the irresistible thrall of Common
428
+ − 159 Lisp, thinks that it is bogus that the types and implementations
+ − 160 of input and output streams are the same. */
665
+ − 161 Bytecount (*reader) (Lstream *stream, unsigned char *data,
814
+ − 162 Bytecount size);
428
+ − 163 /* Send some data to the stream's end. Data to be sent is in DATA
+ − 164 and is SIZE bytes. Return the number of bytes sent. This
+ − 165 function can send and return fewer bytes than is passed in; in
+ − 166 that case, the function will just be called again until there is
+ − 167 no data left or 0 is returned. A return value of 0 means that no
+ − 168 more data can be currently stored, but there is no error; the
+ − 169 data will be squirrelled away until the writer can accept
+ − 170 data. (This is useful, e.g., of you're dealing with a
+ − 171 non-blocking file descriptor and are getting EWOULDBLOCK errors.)
+ − 172 This function can be NULL if the stream is input-only. */
665
+ − 173 Bytecount (*writer) (Lstream *stream, const unsigned char *data,
814
+ − 174 Bytecount size);
428
+ − 175 /* Return non-zero if the last write operation on the stream resulted
+ − 176 in an attempt to block (EWOULDBLOCK). If this method does not
+ − 177 exists, the implementation returns 0 */
+ − 178 int (*was_blocked_p) (Lstream *stream);
+ − 179 /* Rewind the stream. If this is NULL, the stream is not seekable. */
+ − 180 int (*rewinder) (Lstream *stream);
+ − 181 /* Indicate whether this stream is seekable -- i.e. it can be rewound.
+ − 182 This method is ignored if the stream does not have a rewind
+ − 183 method. If this method is not present, the result is determined
+ − 184 by whether a rewind method is present. */
+ − 185 int (*seekable_p) (Lstream *stream);
+ − 186 /* Perform any additional operations necessary to flush the
+ − 187 data in this stream. */
+ − 188 int (*flusher) (Lstream *stream);
771
+ − 189 /* Perform any additional operations necessary to close this stream down.
+ − 190 May be NULL. This function is called when Lstream_close() is called
+ − 191 (which will be called automatically on any open streams when they are
+ − 192 garbage-collected or deleted with Lstream_delete()). When this
+ − 193 function is called, all pending data in the stream will already have
+ − 194 been written out; however, the closer write more data, e.g. an "end"
+ − 195 section at the end of a file. */
428
+ − 196 int (*closer) (Lstream *stream);
771
+ − 197 /* Clean up any remaining data at the time that a stream is
+ − 198 garbage-collected or deleted with Lstream_delete(). If the stream was
+ − 199 open at this point, the finalizer is called after calling
+ − 200 Lstream_close(). Called only once (NOT called at disksave time). */
+ − 201 void (*finalizer) (Lstream *stream);
428
+ − 202 /* Mark this object for garbage collection. Same semantics as
+ − 203 a standard Lisp_Object marker. This function can be NULL. */
+ − 204 Lisp_Object (*marker) (Lisp_Object lstream);
+ − 205 } Lstream_implementation;
+ − 206
771
+ − 207 #define DEFINE_LSTREAM_IMPLEMENTATION(name, c_name) \
+ − 208 Lstream_implementation lstream_##c_name[1] = \
1204
+ − 209 { { (name), sizeof (struct c_name##_stream), \
+ − 210 &lstream_empty_extra_description } }
+ − 211
+ − 212 #define DEFINE_LSTREAM_IMPLEMENTATION_WITH_DATA(name, c_name) \
+ − 213 static const struct sized_memory_description c_name##_lstream_description_0 \
+ − 214 = { \
+ − 215 sizeof (struct c_name##_stream), \
+ − 216 c_name##_lstream_description \
+ − 217 }; \
+ − 218 Lstream_implementation lstream_##c_name[1] = \
+ − 219 { { (name), sizeof (struct c_name##_stream), \
+ − 220 &c_name##_lstream_description_0 } }
771
+ − 221
+ − 222 #define DECLARE_LSTREAM(c_name) \
+ − 223 extern Lstream_implementation lstream_##c_name[]
428
+ − 224
+ − 225 #define LSTREAM_FL_IS_OPEN 1
+ − 226 #define LSTREAM_FL_READ 2
+ − 227 #define LSTREAM_FL_WRITE 4
+ − 228 #define LSTREAM_FL_NO_PARTIAL_CHARS 8
+ − 229 #define LSTREAM_FL_CLOSE_AT_DISKSAVE 16
+ − 230
+ − 231 struct lstream
+ − 232 {
3017
+ − 233 struct LCRECORD_HEADER header;
442
+ − 234 const Lstream_implementation *imp; /* methods for this stream */
428
+ − 235 Lstream_buffering buffering; /* type of buffering in use */
665
+ − 236 Bytecount buffering_size; /* number of bytes buffered */
428
+ − 237
+ − 238 unsigned char *in_buffer; /* holds characters read from stream end */
665
+ − 239 Bytecount in_buffer_size; /* allocated size of buffer */
+ − 240 Bytecount in_buffer_current; /* number of characters in buffer */
+ − 241 Bytecount in_buffer_ind; /* pointer to next character to
462
+ − 242 take from buffer */
428
+ − 243
+ − 244 unsigned char *out_buffer; /* holds characters to write to stream end */
665
+ − 245 Bytecount out_buffer_size; /* allocated size of buffer */
+ − 246 Bytecount out_buffer_ind; /* pointer to next buffer spot to
462
+ − 247 write a character */
428
+ − 248
+ − 249 /* The unget buffer is more or less a stack -- things get pushed
+ − 250 onto the end and read back from the end. Lstream_read()
+ − 251 basically reads backwards from the end to get stuff; Lstream_unread()
+ − 252 similarly has to push the data on backwards. */
+ − 253 unsigned char *unget_buffer; /* holds characters pushed back onto input */
665
+ − 254 Bytecount unget_buffer_size; /* allocated size of buffer */
+ − 255 Bytecount unget_buffer_ind; /* pointer to next buffer spot
462
+ − 256 to write a character */
428
+ − 257
665
+ − 258 Bytecount byte_count;
456
+ − 259 int flags;
+ − 260 max_align_t data[1];
428
+ − 261 };
+ − 262
1204
+ − 263 extern const struct sized_memory_description lstream_empty_extra_description;
+ − 264
428
+ − 265 #define LSTREAM_TYPE_P(lstr, type) \
+ − 266 ((lstr)->imp == lstream_##type)
+ − 267
800
+ − 268 #ifdef ERROR_CHECK_TYPES
826
+ − 269 DECLARE_INLINE_HEADER (
+ − 270 struct lstream *
428
+ − 271 error_check_lstream_type (struct lstream *stream,
442
+ − 272 const Lstream_implementation *imp)
826
+ − 273 )
428
+ − 274 {
+ − 275 assert (stream->imp == imp);
+ − 276 return stream;
+ − 277 }
771
+ − 278 # define LSTREAM_TYPE_DATA(lstr, type) \
+ − 279 ((struct type##_stream *) \
+ − 280 Lstream_data (error_check_lstream_type (lstr, lstream_##type)))
428
+ − 281 #else
771
+ − 282 # define LSTREAM_TYPE_DATA(lstr, type) \
428
+ − 283 ((struct type##_stream *) Lstream_data (lstr))
+ − 284 #endif
+ − 285
771
+ − 286 /* Declare that lstream-type TYPE has method M; used in initialization
+ − 287 routines */
428
+ − 288 #define LSTREAM_HAS_METHOD(type, m) \
+ − 289 (lstream_##type->m = type##_##m)
+ − 290
+ − 291
442
+ − 292 Lstream *Lstream_new (const Lstream_implementation *imp,
+ − 293 const char *mode);
428
+ − 294 void Lstream_reopen (Lstream *lstr);
+ − 295 void Lstream_set_buffering (Lstream *lstr, Lstream_buffering buffering,
+ − 296 int buffering_size);
+ − 297 int Lstream_flush (Lstream *lstr);
+ − 298 int Lstream_flush_out (Lstream *lstr);
+ − 299 int Lstream_fputc (Lstream *lstr, int c);
+ − 300 int Lstream_fgetc (Lstream *lstr);
+ − 301 void Lstream_fungetc (Lstream *lstr, int c);
665
+ − 302 Bytecount Lstream_read (Lstream *lstr, void *data,
+ − 303 Bytecount size);
771
+ − 304 int Lstream_write (Lstream *lstr, const void *data,
+ − 305 Bytecount size);
428
+ − 306 int Lstream_was_blocked_p (Lstream *lstr);
665
+ − 307 void Lstream_unread (Lstream *lstr, const void *data, Bytecount size);
428
+ − 308 int Lstream_rewind (Lstream *lstr);
+ − 309 int Lstream_seekable_p (Lstream *lstr);
+ − 310 int Lstream_close (Lstream *lstr);
771
+ − 311
428
+ − 312 void Lstream_delete (Lstream *lstr);
+ − 313 void Lstream_set_character_mode (Lstream *str);
771
+ − 314 void Lstream_unset_character_mode (Lstream *lstr);
428
+ − 315
771
+ − 316 /* Lstream_putc: Write out one byte to the stream. This is a macro
+ − 317 and so it is very efficient. The C argument is only evaluated once
+ − 318 but the STREAM argument is evaluated more than once. Returns 0 on
+ − 319 success, -1 on error. */
428
+ − 320
771
+ − 321 #define Lstream_putc(stream, c) \
+ − 322 /* Call the function equivalent if the out buffer is full. Otherwise, \
+ − 323 add to the end of the out buffer and, if line buffering is called for \
+ − 324 and the character marks the end of a line, write out the buffer. */ \
+ − 325 ((stream)->out_buffer_ind >= (stream)->out_buffer_size ? \
+ − 326 Lstream_fputc (stream, c) : \
+ − 327 ((stream)->out_buffer[(stream)->out_buffer_ind++] = \
+ − 328 (unsigned char) (c), \
+ − 329 (stream)->byte_count++, \
+ − 330 (stream)->buffering == LSTREAM_LINE_BUFFERED && \
+ − 331 (stream)->out_buffer[(stream)->out_buffer_ind - 1] == '\n' ? \
428
+ − 332 Lstream_flush_out (stream) : 0))
+ − 333
771
+ − 334 /* Lstream_getc: Read one byte from the stream and returns it as an
+ − 335 unsigned char cast to an int, or EOF on end of file or error. This
+ − 336 is a macro and so it is very efficient. The STREAM argument is
+ − 337 evaluated more than once. */
+ − 338
+ − 339 #define Lstream_getc(stream) \
+ − 340 /* Retrieve from unget buffer if there are any characters there; \
+ − 341 else retrieve from in buffer if there's anything there; \
+ − 342 else call the function equivalent */ \
428
+ − 343 ((stream)->unget_buffer_ind > 0 ? \
+ − 344 ((stream)->byte_count++, \
+ − 345 (stream)->unget_buffer[--(stream)->unget_buffer_ind]) : \
+ − 346 (stream)->in_buffer_ind < (stream)->in_buffer_current ? \
+ − 347 ((stream)->byte_count++, \
+ − 348 (stream)->in_buffer[(stream)->in_buffer_ind++]) : \
+ − 349 Lstream_fgetc (stream))
+ − 350
771
+ − 351 /* Lstream_ungetc: Push one byte back onto the input queue, cast to
+ − 352 unsigned char. This will be the next byte read from the stream.
+ − 353 Any number of bytes can be pushed back and will be read in the
+ − 354 reverse order they were pushed back -- most recent first. (This is
+ − 355 necessary for consistency -- if there are a number of bytes that
+ − 356 have been unread and I read and unread a byte, it needs to be the
+ − 357 first to be read again.) This is a macro and so it is very
+ − 358 efficient. The C argument is only evaluated once but the STREAM
+ − 359 argument is evaluated more than once.
+ − 360 */
+ − 361
428
+ − 362 #define Lstream_ungetc(stream, c) \
771
+ − 363 /* Add to the end if it won't overflow buffer; otherwise call the \
+ − 364 function equivalent */ \
428
+ − 365 ((stream)->unget_buffer_ind >= (stream)->unget_buffer_size ? \
+ − 366 Lstream_fungetc (stream, c) : \
+ − 367 (void) ((stream)->byte_count--, \
+ − 368 ((stream)->unget_buffer[(stream)->unget_buffer_ind++] = \
+ − 369 (unsigned char) (c))))
+ − 370
+ − 371 #define Lstream_data(stream) ((void *) ((stream)->data))
+ − 372 #define Lstream_byte_count(stream) ((stream)->byte_count)
+ − 373
+ − 374
+ − 375 /************************************************************************/
867
+ − 376 /* working with an Lstream as a stream of Ichars */
428
+ − 377 /************************************************************************/
+ − 378
+ − 379 #ifdef MULE
+ − 380
826
+ − 381 DECLARE_INLINE_HEADER (
867
+ − 382 Ichar
+ − 383 Lstream_get_ichar (Lstream *stream)
826
+ − 384 )
428
+ − 385 {
+ − 386 int c = Lstream_getc (stream);
826
+ − 387 return (c < 0x80 /* c == EOF || byte_ascii_p (c) */
867
+ − 388 ? (Ichar) c
+ − 389 : Lstream_get_ichar_1 (stream, c));
428
+ − 390 }
+ − 391
867
+ − 392 /* Write an Ichar to a stream. Return value is 0 for success, -1 for
771
+ − 393 failure. */
+ − 394
826
+ − 395 DECLARE_INLINE_HEADER (
+ − 396 int
867
+ − 397 Lstream_put_ichar (Lstream *stream, Ichar ch)
826
+ − 398 )
428
+ − 399 {
867
+ − 400 return ichar_ascii_p (ch) ?
428
+ − 401 Lstream_putc (stream, ch) :
867
+ − 402 Lstream_fput_ichar (stream, ch);
428
+ − 403 }
+ − 404
826
+ − 405 DECLARE_INLINE_HEADER (
+ − 406 void
867
+ − 407 Lstream_unget_ichar (Lstream *stream, Ichar ch)
826
+ − 408 )
428
+ − 409 {
867
+ − 410 if (ichar_ascii_p (ch))
428
+ − 411 Lstream_ungetc (stream, ch);
+ − 412 else
867
+ − 413 Lstream_funget_ichar (stream, ch);
428
+ − 414 }
+ − 415 #else /* not MULE */
+ − 416
867
+ − 417 # define Lstream_get_ichar(stream) Lstream_getc (stream)
+ − 418 # define Lstream_put_ichar(stream, ch) Lstream_putc (stream, ch)
+ − 419 # define Lstream_unget_ichar(stream, ch) Lstream_ungetc (stream, ch)
428
+ − 420
+ − 421 #endif /* not MULE */
+ − 422
+ − 423
+ − 424 /************************************************************************/
+ − 425 /* Lstream implementations */
+ − 426 /************************************************************************/
+ − 427
+ − 428 /* Flags we can pass to the filedesc and stdio streams. */
+ − 429
+ − 430 /* If set, close the descriptor or FILE * when the stream is closed. */
+ − 431 #define LSTR_CLOSING 1
+ − 432
+ − 433 /* If set, allow quitting out of the actual I/O. */
+ − 434 #define LSTR_ALLOW_QUIT 2
+ − 435
+ − 436 /* If set and filedesc_stream_set_pty_flushing() has been called
+ − 437 on the stream, do not send more than pty_max_bytes on a single
+ − 438 line without flushing the data out using the eof_char. */
+ − 439 #define LSTR_PTY_FLUSHING 4
+ − 440
+ − 441 /* If set, an EWOULDBLOCK error is not treated as an error but
+ − 442 simply causes the write function to return 0 as the number
+ − 443 of bytes written out. */
+ − 444 #define LSTR_BLOCKED_OK 8
+ − 445
+ − 446 Lisp_Object make_stdio_input_stream (FILE *stream, int flags);
+ − 447 Lisp_Object make_stdio_output_stream (FILE *stream, int flags);
+ − 448 Lisp_Object make_filedesc_input_stream (int filedesc, int offset, int count,
+ − 449 int flags);
+ − 450 Lisp_Object make_filedesc_output_stream (int filedesc, int offset, int count,
+ − 451 int flags);
+ − 452 void filedesc_stream_set_pty_flushing (Lstream *stream,
+ − 453 int pty_max_bytes,
867
+ − 454 Ibyte eof_char);
428
+ − 455 int filedesc_stream_fd (Lstream *stream);
+ − 456 Lisp_Object make_lisp_string_input_stream (Lisp_Object string,
+ − 457 Bytecount offset,
+ − 458 Bytecount len);
462
+ − 459 Lisp_Object make_fixed_buffer_input_stream (const void *buf,
665
+ − 460 Bytecount size);
462
+ − 461 Lisp_Object make_fixed_buffer_output_stream (void *buf,
665
+ − 462 Bytecount size);
442
+ − 463 const unsigned char *fixed_buffer_input_stream_ptr (Lstream *stream);
428
+ − 464 unsigned char *fixed_buffer_output_stream_ptr (Lstream *stream);
+ − 465 Lisp_Object make_resizing_buffer_output_stream (void);
+ − 466 unsigned char *resizing_buffer_stream_ptr (Lstream *stream);
788
+ − 467 Lisp_Object resizing_buffer_to_lisp_string (Lstream *stream);
428
+ − 468 Lisp_Object make_dynarr_output_stream (unsigned_char_dynarr *dyn);
+ − 469 #define LSTR_SELECTIVE 1
+ − 470 #define LSTR_IGNORE_ACCESSIBLE 2
665
+ − 471 Lisp_Object make_lisp_buffer_input_stream (struct buffer *buf, Charbpos start,
+ − 472 Charbpos end, int flags);
+ − 473 Lisp_Object make_lisp_buffer_output_stream (struct buffer *buf, Charbpos pos,
428
+ − 474 int flags);
665
+ − 475 Charbpos lisp_buffer_stream_startpos (Lstream *stream);
428
+ − 476
440
+ − 477 #endif /* INCLUDED_lstream_h_ */