libguile/ports.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_PORTS_H
   4 #define SCM_PORTS_H
   5
   6 /* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004,
   7  *   2006, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public License
  11  * as published by the Free Software Foundation; either version 3 of
  12  * the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  22  * 02110-1301 USA
  23  */
  24
  25 \f
  26
  27 #include "libguile/__scm.h"
  28
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <unistd.h>
  32 #include "libguile/gc.h"
  33 #include "libguile/tags.h"
  34 #include "libguile/error.h"
  35 #include "libguile/print.h"
  36 #include "libguile/struct.h"
  37 #include "libguile/threads.h"
  38 #include "libguile/strings.h"
  39
  40 \f
  41
  42 #define SCM_INITIAL_PUTBACK_BUF_SIZE 4
  43
  44 /* values for the rw_active flag.  */
  45 typedef enum scm_t_port_rw_active {
  46   SCM_PORT_NEITHER = 0,
  47   SCM_PORT_READ = 1,
  48   SCM_PORT_WRITE = 2
  49 } scm_t_port_rw_active;
  50
  51 typedef enum scm_t_port_encoding_mode {
  52   SCM_PORT_ENCODING_MODE_UTF8,
  53   SCM_PORT_ENCODING_MODE_ICONV
  54 } scm_t_port_encoding_mode;
  55
  56 /* This is a separate object so that only those ports that use iconv
  57    cause finalizers to be registered.  */
  58 typedef struct scm_t_iconv_descriptors
  59 {
  60   /* input/output iconv conversion descriptors */
  61   void *input_cd;
  62   void *output_cd;
  63 } scm_t_iconv_descriptors;
  64
  65 /* C representation of a Scheme port.  */
  66
  67 typedef struct
  68 {
  69   SCM port;                     /* Link back to the port object.  */
  70   scm_i_pthread_mutex_t *lock;  /* A recursive lock for this port.  */
  71
  72   int revealed;                 /* 0 not revealed, > 1 revealed.
  73                                  * Revealed ports do not get GC'd.
  74                                  */
  75   /* data for the underlying port implementation as a raw C value. */
  76   scm_t_bits stream;
  77
  78   SCM file_name;                /* debugging support.  */
  79   long line_number;             /* debugging support.  */
  80   int column_number;            /* debugging support.  */
  81
  82   /* port buffers.  the buffer(s) are set up for all ports.
  83      in the case of string ports, the buffer is the string itself.
  84      in the case of unbuffered file ports, the buffer is a
  85      single char: shortbuf.  */
  86
  87   /* this buffer is filled from read_buf to read_end using the ptob
  88      buffer_fill.  then input requests are taken from read_pos until
  89      it reaches read_end.  */
  90
  91   unsigned char *read_buf;      /* buffer start.  */
  92   const unsigned char *read_pos;/* the next unread char.  */
  93   unsigned char *read_end;      /* pointer to last buffered char + 1.  */
  94   scm_t_off read_buf_size;              /* size of the buffer.  */
  95
  96   /* when chars are put back into the buffer, e.g., using peek-char or
  97      unread-string, the read-buffer pointers are switched to cbuf.
  98      the original pointers are saved here and restored when the put-back
  99      chars have been consumed.  */
 100   unsigned char *saved_read_buf;
 101   const unsigned char *saved_read_pos;
 102   unsigned char *saved_read_end;
 103   scm_t_off saved_read_buf_size;
 104
 105   /* write requests are saved into this buffer at write_pos until it
 106      reaches write_buf + write_buf_size, then the ptob flush is
 107      called.  */
 108
 109   unsigned char *write_buf;     /* buffer start.  */
 110   unsigned char *write_pos;     /* pointer to last buffered char + 1.  */
 111   unsigned char *write_end;     /* pointer to end of buffer + 1.  */
 112   scm_t_off write_buf_size;             /* size of the buffer.  */
 113
 114   unsigned char shortbuf;       /* buffer for "unbuffered" streams.  */
 115
 116   int rw_random;                /* true if the port is random access.
 117                                    implies that the buffers must be
 118                                    flushed before switching between
 119                                    reading and writing, seeking, etc.  */
 120
 121   scm_t_port_rw_active rw_active; /* for random access ports,
 122                                      indicates which of the buffers
 123                                      is currently in use.  can be
 124                                      SCM_PORT_WRITE, SCM_PORT_READ,
 125                                      or SCM_PORT_NEITHER.  */
 126
 127
 128   /* a buffer for un-read chars and strings.  */
 129   unsigned char *putback_buf;
 130   size_t putback_buf_size;        /* allocated size of putback_buf.  */
 131
 132   /* Character encoding support  */
 133   char *encoding;
 134   scm_t_port_encoding_mode encoding_mode;
 135   scm_t_string_failed_conversion_handler ilseq_handler;
 136   scm_t_iconv_descriptors *iconv_descriptors;
 137 } scm_t_port;
 138
 139
 140 SCM_INTERNAL SCM scm_i_port_weak_set;
 141
 142
 143 #define SCM_READ_BUFFER_EMPTY_P(c_port) (c_port->read_pos >= c_port->read_end)
 144
 145 \f
 146
 147 #define SCM_EOF_OBJECT_P(x) (scm_is_eq ((x), SCM_EOF_VAL))
 148
 149 /* PORT FLAGS
 150  * A set of flags characterizes a port.
 151  * Note that we reserve the bits 1 << 24 and above for use by the
 152  * routines in the port's scm_ptobfuns structure.
 153  */
 154 #define SCM_OPN         (1L<<16) /* Is the port open? */
 155 #define SCM_RDNG        (2L<<16) /* Is it a readable port? */
 156 #define SCM_WRTNG       (4L<<16) /* Is it writable? */
 157 #define SCM_BUF0        (8L<<16) /* Is it unbuffered? */
 158 #define SCM_BUFLINE     (64L<<16) /* Is it line-buffered? */
 159
 160 #define SCM_PORTP(x) (SCM_HAS_TYP7 (x, scm_tc7_port))
 161 #define SCM_OPPORTP(x) (SCM_PORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_OPN))
 162 #define SCM_INPUT_PORT_P(x) (SCM_PORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_RDNG))
 163 #define SCM_OUTPUT_PORT_P(x) (SCM_PORTP (x) && (SCM_CELL_WORD_0 (x) & SCM_WRTNG))
 164 #define SCM_OPINPORTP(x) (SCM_OPPORTP (x) && SCM_INPUT_PORT_P (x))
 165 #define SCM_OPOUTPORTP(x) (SCM_OPPORTP (x) && SCM_OUTPUT_PORT_P (x))
 166 #define SCM_OPENP(x) (SCM_OPPORTP (x))
 167 #define SCM_CLOSEDP(x) (!SCM_OPENP (x))
 168 #define SCM_CLR_PORT_OPEN_FLAG(p) \
 169   SCM_SET_CELL_WORD_0 ((p), SCM_CELL_WORD_0 (p) & ~SCM_OPN)
 170
 171 #define SCM_PTAB_ENTRY(x)         ((scm_t_port *) SCM_CELL_WORD_1 (x))
 172 #define SCM_PORT_DESCRIPTOR(port) ((scm_t_ptob_descriptor *) SCM_CELL_WORD_2 (port))
 173 #define SCM_SETPTAB_ENTRY(x, ent)  (SCM_SET_CELL_WORD_1 ((x), (scm_t_bits) (ent)))
 174 #define SCM_STREAM(x)             (SCM_PTAB_ENTRY(x)->stream)
 175 #define SCM_SETSTREAM(x, s)        (SCM_PTAB_ENTRY(x)->stream = (scm_t_bits) (s))
 176 #define SCM_FILENAME(x)           (SCM_PTAB_ENTRY(x)->file_name)
 177 #define SCM_SET_FILENAME(x, n)    (SCM_PTAB_ENTRY(x)->file_name = (n))
 178 #define SCM_LINUM(x)              (SCM_PTAB_ENTRY(x)->line_number)
 179 #define SCM_COL(x)                (SCM_PTAB_ENTRY(x)->column_number)
 180 #define SCM_REVEALED(x)           (SCM_PTAB_ENTRY(x)->revealed)
 181 #define SCM_SETREVEALED(x, s)      (SCM_PTAB_ENTRY(x)->revealed = (s))
 182
 183 #define SCM_INCLINE(port)       do {SCM_LINUM (port) += 1; SCM_COL (port) = 0;} while (0)
 184 #define SCM_ZEROCOL(port)       do {SCM_COL (port) = 0;} while (0)
 185 #define SCM_INCCOL(port)        do {SCM_COL (port) += 1;} while (0)
 186 #define SCM_DECCOL(port)        do {if (SCM_COL (port) > 0) SCM_COL (port) -= 1;} while (0)
 187 #define SCM_TABCOL(port)        do {SCM_COL (port) += 8 - SCM_COL (port) % 8;} while (0)
 188
 189 /* Maximum number of port types.  */
 190 #define SCM_I_MAX_PORT_TYPE_COUNT  256
 191
 192 \f
 193
 194 typedef enum scm_t_port_type_flags {
 195   SCM_PORT_TYPE_HAS_FLUSH = 1 << 0
 196 } scm_t_port_type_flags;
 197
 198 /* port-type description.  */
 199 typedef struct scm_t_ptob_descriptor
 200 {
 201   char *name;
 202   SCM (*mark) (SCM);
 203   size_t (*free) (SCM);
 204   int (*print) (SCM exp, SCM port, scm_print_state *pstate);
 205   SCM (*equalp) (SCM, SCM);
 206   int (*close) (SCM port);
 207
 208   void (*write) (SCM port, const void *data, size_t size);
 209   void (*flush) (SCM port);
 210
 211   void (*end_input) (SCM port, int offset);
 212   int (*fill_input) (SCM port);
 213   int (*input_waiting) (SCM port);
 214
 215   scm_t_off (*seek) (SCM port, scm_t_off OFFSET, int WHENCE);
 216   void (*truncate) (SCM port, scm_t_off length);
 217
 218   unsigned flags;
 219 } scm_t_ptob_descriptor;
 220
 221 #define SCM_TC2PTOBNUM(x) (0x0ff & ((x) >> 8))
 222 #define SCM_PTOBNUM(x) (SCM_TC2PTOBNUM (SCM_CELL_TYPE (x)))
 223 /* SCM_PTOBNAME can be 0 if name is missing */
 224 #define SCM_PTOBNAME(ptobnum) (scm_c_port_type_ref (ptobnum)->name)
 225
 226 /* Port types, and their vtables.  */
 227 SCM_INTERNAL long scm_c_num_port_types (void);
 228 SCM_API scm_t_ptob_descriptor* scm_c_port_type_ref (long ptobnum);
 229 SCM_API long scm_c_port_type_add_x (scm_t_ptob_descriptor *desc);
 230 SCM_API scm_t_bits scm_make_port_type (char *name,
 231                                        int (*fill_input) (SCM port),
 232                                        void (*write) (SCM port,
 233                                                       const void *data,
 234                                                       size_t size));
 235 SCM_API void scm_set_port_mark (scm_t_bits tc, SCM (*mark) (SCM));
 236 SCM_API void scm_set_port_free (scm_t_bits tc, size_t (*free) (SCM));
 237 SCM_API void scm_set_port_print (scm_t_bits tc,
 238                                  int (*print) (SCM exp,
 239                                                SCM port,
 240                                                scm_print_state *pstate));
 241 SCM_API void scm_set_port_equalp (scm_t_bits tc, SCM (*equalp) (SCM, SCM));
 242 SCM_API void scm_set_port_close (scm_t_bits tc, int (*close) (SCM));
 243
 244 SCM_API void scm_set_port_flush (scm_t_bits tc, void (*flush) (SCM port));
 245 SCM_API void scm_set_port_end_input (scm_t_bits tc,
 246                                      void (*end_input) (SCM port,
 247                                                         int offset));
 248 SCM_API void scm_set_port_seek (scm_t_bits tc,
 249                                 scm_t_off (*seek) (SCM port,
 250                                                    scm_t_off OFFSET,
 251                                                    int WHENCE));
 252 SCM_API void scm_set_port_truncate (scm_t_bits tc,
 253                                     void (*truncate) (SCM port,
 254                                                       scm_t_off length));
 255 SCM_API void scm_set_port_input_waiting (scm_t_bits tc, int (*input_waiting) (SCM));
 256
 257 /* The input, output, error, and load ports.  */
 258 SCM_API SCM scm_current_input_port (void);
 259 SCM_API SCM scm_current_output_port (void);
 260 SCM_API SCM scm_current_error_port (void);
 261 SCM_API SCM scm_current_warning_port (void);
 262 SCM_API SCM scm_current_load_port (void);
 263 SCM_API SCM scm_set_current_input_port (SCM port);
 264 SCM_API SCM scm_set_current_output_port (SCM port);
 265 SCM_API SCM scm_set_current_error_port (SCM port);
 266 SCM_API SCM scm_set_current_warning_port (SCM port);
 267 SCM_API void scm_dynwind_current_input_port (SCM port);
 268 SCM_API void scm_dynwind_current_output_port (SCM port);
 269 SCM_API void scm_dynwind_current_error_port (SCM port);
 270 SCM_INTERNAL void scm_i_dynwind_current_load_port (SCM port);
 271
 272 /* Mode bits.  */
 273 SCM_INTERNAL long scm_i_mode_bits (SCM modes);
 274 SCM_API long scm_mode_bits (char *modes);
 275 SCM_API SCM scm_port_mode (SCM port);
 276
 277 /* Low-level constructors.  */
 278 SCM_API SCM
 279 scm_c_make_port_with_encoding (scm_t_bits tag,
 280                                unsigned long mode_bits,
 281                                const char *encoding,
 282                                scm_t_string_failed_conversion_handler handler,
 283                                scm_t_bits stream);
 284 SCM_API SCM scm_c_make_port (scm_t_bits tag, unsigned long mode_bits,
 285                              scm_t_bits stream);
 286 SCM_API SCM scm_new_port_table_entry (scm_t_bits tag);
 287
 288 /* Predicates.  */
 289 SCM_API SCM scm_port_p (SCM x);
 290 SCM_API SCM scm_input_port_p (SCM x);
 291 SCM_API SCM scm_output_port_p (SCM x);
 292 SCM_API SCM scm_port_closed_p (SCM port);
 293 SCM_API SCM scm_eof_object_p (SCM x);
 294
 295 /* Closing ports.  */
 296 SCM_API SCM scm_close_port (SCM port);
 297 SCM_API SCM scm_close_input_port (SCM port);
 298 SCM_API SCM scm_close_output_port (SCM port);
 299
 300 /* Encoding characters to byte streams, and decoding byte streams to
 301    characters.  */
 302 SCM_INTERNAL const char *scm_i_default_port_encoding (void);
 303 SCM_INTERNAL void scm_i_set_default_port_encoding (const char *);
 304 SCM_INTERNAL scm_t_iconv_descriptors *scm_i_port_iconv_descriptors (SCM port);
 305 SCM_INTERNAL void scm_i_set_port_encoding_x (SCM port, const char *str);
 306 SCM_API SCM scm_port_encoding (SCM port);
 307 SCM_API SCM scm_set_port_encoding_x (SCM port, SCM encoding);
 308 SCM_INTERNAL scm_t_string_failed_conversion_handler scm_i_get_conversion_strategy (SCM port);
 309 SCM_INTERNAL void scm_i_set_conversion_strategy_x (SCM port,
 310                                                    scm_t_string_failed_conversion_handler h);
 311 SCM_API SCM scm_port_conversion_strategy (SCM port);
 312 SCM_API SCM scm_set_port_conversion_strategy_x (SCM port, SCM behavior);
 313
 314 /* Acquiring and releasing the port lock.  */
 315 SCM_API void scm_dynwind_lock_port (SCM port);
 316 SCM_INLINE int scm_c_lock_port (SCM port, scm_i_pthread_mutex_t **lock);
 317 SCM_INLINE int scm_c_try_lock_port (SCM port, scm_i_pthread_mutex_t **lock);
 318
 319 /* Revealed counts.  */
 320 SCM_API int scm_revealed_count (SCM port);
 321 SCM_API SCM scm_port_revealed (SCM port);
 322 SCM_API SCM scm_set_port_revealed_x (SCM port, SCM rcount);
 323 SCM_API SCM scm_adjust_port_revealed_x (SCM port, SCM addend);
 324
 325 /* Input.  */
 326 SCM_API int scm_get_byte_or_eof (SCM port);
 327 SCM_INLINE int scm_get_byte_or_eof_unlocked (SCM port);
 328 SCM_API int scm_peek_byte_or_eof (SCM port);
 329 SCM_INLINE int scm_peek_byte_or_eof_unlocked (SCM port);
 330 SCM_API size_t scm_c_read (SCM port, void *buffer, size_t size);
 331 SCM_API size_t scm_c_read_unlocked (SCM port, void *buffer, size_t size);
 332 SCM_API scm_t_wchar scm_getc (SCM port);
 333 SCM_API scm_t_wchar scm_getc_unlocked (SCM port);
 334 SCM_API SCM scm_read_char (SCM port);
 335
 336 /* Pushback.  */
 337 SCM_INTERNAL void scm_unget_byte (int c, SCM port);
 338 SCM_INTERNAL void scm_unget_byte_unlocked (int c, SCM port);
 339 SCM_API void scm_ungetc (scm_t_wchar c, SCM port);
 340 SCM_API void scm_ungetc_unlocked (scm_t_wchar c, SCM port);
 341 SCM_API void scm_ungets (const char *s, int n, SCM port);
 342 SCM_API void scm_ungets_unlocked (const char *s, int n, SCM port);
 343 SCM_API SCM scm_peek_char (SCM port);
 344 SCM_API SCM scm_unread_char (SCM cobj, SCM port);
 345 SCM_API SCM scm_unread_string (SCM str, SCM port);
 346
 347 /* Manipulating the buffers.  */
 348 SCM_API void scm_port_non_buffer (scm_t_port *pt);
 349 SCM_API int scm_fill_input (SCM port);
 350 SCM_API int scm_fill_input_unlocked (SCM port);
 351 SCM_INTERNAL size_t scm_take_from_input_buffers (SCM port, char *dest, size_t read_len);
 352 SCM_API SCM scm_drain_input (SCM port);
 353 SCM_API void scm_end_input (SCM port);
 354 SCM_API void scm_end_input_unlocked (SCM port);
 355 SCM_API SCM scm_force_output (SCM port);
 356 SCM_API void scm_flush (SCM port);
 357 SCM_API void scm_flush_unlocked (SCM port);
 358
 359 /* Output.  */
 360 SCM_API void scm_putc (char c, SCM port);
 361 SCM_INLINE void scm_putc_unlocked (char c, SCM port);
 362 SCM_API void scm_puts (const char *str_data, SCM port);
 363 SCM_INLINE void scm_puts_unlocked (const char *str_data, SCM port);
 364 SCM_API void scm_c_write (SCM port, const void *buffer, size_t size);
 365 SCM_API void scm_c_write_unlocked (SCM port, const void *buffer, size_t size);
 366 SCM_API void scm_lfwrite (const char *ptr, size_t size, SCM port);
 367 SCM_API void scm_lfwrite_unlocked (const char *ptr, size_t size, SCM port);
 368 SCM_INTERNAL void scm_lfwrite_substr (SCM str, size_t start, size_t end,
 369                                       SCM port);
 370
 371 /* Querying and setting positions, and character availability.  */
 372 SCM_API SCM scm_char_ready_p (SCM port);
 373 SCM_API SCM scm_seek (SCM object, SCM offset, SCM whence);
 374 SCM_API SCM scm_truncate_file (SCM object, SCM length);
 375 SCM_API SCM scm_port_line (SCM port);
 376 SCM_API SCM scm_set_port_line_x (SCM port, SCM line);
 377 SCM_API SCM scm_port_column (SCM port);
 378 SCM_API SCM scm_set_port_column_x (SCM port, SCM line);
 379 SCM_API SCM scm_port_filename (SCM port);
 380 SCM_API SCM scm_set_port_filename_x (SCM port, SCM filename);
 381
 382 /* Implementation helpers for port printing functions.  */
 383 SCM_API int scm_port_print (SCM exp, SCM port, scm_print_state *);
 384 SCM_API void scm_print_port_mode (SCM exp, SCM port);
 385
 386 /* Iterating over all ports.  */
 387 SCM_API SCM scm_port_for_each (SCM proc);
 388 SCM_API void scm_c_port_for_each (void (*proc)(void *data, SCM p), void *data);
 389 SCM_API SCM scm_flush_all_ports (void);
 390
 391 /* Void ports.  */
 392 SCM_API SCM scm_void_port (char * mode_str);
 393 SCM_API SCM scm_sys_make_void_port (SCM mode);
 394
 395 /* Initialization.  */
 396 SCM_INTERNAL void scm_init_ports (void);
 397
 398
 399 /* Inline function implementations.  */
 400
 401 #if SCM_CAN_INLINE || defined SCM_INLINE_C_IMPLEMENTING_INLINES
 402 SCM_INLINE_IMPLEMENTATION int
 403 scm_c_lock_port (SCM port, scm_i_pthread_mutex_t **lock)
 404 {
 405   *lock = SCM_PTAB_ENTRY (port)->lock;
 406
 407   if (*lock)
 408     return scm_i_pthread_mutex_lock (*lock);
 409   else
 410     return 0;
 411 }
 412
 413 SCM_INLINE_IMPLEMENTATION int
 414 scm_c_try_lock_port (SCM port, scm_i_pthread_mutex_t **lock)
 415 {
 416   *lock = SCM_PTAB_ENTRY (port)->lock;
 417   if (*lock)
 418     {
 419       int ret = scm_i_pthread_mutex_trylock (*lock);
 420       if (ret != 0)
 421         *lock = NULL;
 422       return ret;
 423     }
 424   else
 425     return 0;
 426 }
 427
 428 SCM_INLINE_IMPLEMENTATION int
 429 scm_get_byte_or_eof_unlocked (SCM port)
 430 {
 431   int c;
 432   scm_t_port *pt = SCM_PTAB_ENTRY (port);
 433
 434   if (pt->rw_active == SCM_PORT_WRITE)
 435     /* may be marginally faster than calling scm_flush.  */
 436     SCM_PORT_DESCRIPTOR (port)->flush (port);
 437
 438   if (pt->rw_random)
 439     pt->rw_active = SCM_PORT_READ;
 440
 441   if (pt->read_pos >= pt->read_end)
 442     {
 443       if (SCM_UNLIKELY (scm_fill_input_unlocked (port) == EOF))
 444         return EOF;
 445     }
 446
 447   c = *(pt->read_pos++);
 448
 449   return c;
 450 }
 451
 452 /* Like `scm_get_byte_or_eof' but does not change PORT's `read_pos'.  */
 453 SCM_INLINE_IMPLEMENTATION int
 454 scm_peek_byte_or_eof_unlocked (SCM port)
 455 {
 456   int c;
 457   scm_t_port *pt = SCM_PTAB_ENTRY (port);
 458
 459   if (pt->rw_active == SCM_PORT_WRITE)
 460     /* may be marginally faster than calling scm_flush.  */
 461     SCM_PORT_DESCRIPTOR (port)->flush (port);
 462
 463   if (pt->rw_random)
 464     pt->rw_active = SCM_PORT_READ;
 465
 466   if (pt->read_pos >= pt->read_end)
 467     {
 468       if (SCM_UNLIKELY (scm_fill_input_unlocked (port) == EOF))
 469         return EOF;
 470     }
 471
 472   c = *pt->read_pos;
 473
 474   return c;
 475 }
 476
 477 SCM_INLINE_IMPLEMENTATION void
 478 scm_putc_unlocked (char c, SCM port)
 479 {
 480   SCM_ASSERT_TYPE (SCM_OPOUTPORTP (port), port, 0, NULL, "output port");
 481   scm_lfwrite_unlocked (&c, 1, port);
 482 }
 483
 484 SCM_INLINE_IMPLEMENTATION void
 485 scm_puts_unlocked (const char *s, SCM port)
 486 {
 487   SCM_ASSERT_TYPE (SCM_OPOUTPORTP (port), port, 0, NULL, "output port");
 488   scm_lfwrite_unlocked (s, strlen (s), port);
 489 }
 490 #endif  /* SCM_CAN_INLINE || defined SCM_INLINE_C_IMPLEMENTING_INLINES */
 491
 492 #endif  /* SCM_PORTS_H */
 493
 494 /*
 495   Local Variables:
 496   c-file-style: "gnu"
 497   End:
 498 */