1 /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2004, 2006, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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.
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.
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
29 #include "libguile/_scm.h"
30 #include "libguile/private-gc.h" /* scm_getenv_int */
31 #include "libguile/libpath.h"
32 #include "libguile/fports.h"
33 #include "libguile/read.h"
34 #include "libguile/eval.h"
35 #include "libguile/throw.h"
36 #include "libguile/alist.h"
37 #include "libguile/dynwind.h"
38 #include "libguile/root.h"
39 #include "libguile/strings.h"
40 #include "libguile/modules.h"
41 #include "libguile/chars.h"
42 #include "libguile/srfi-13.h"
44 #include "libguile/validate.h"
45 #include "libguile/load.h"
46 #include "libguile/fluids.h"
48 #include "libguile/vm.h" /* for load-compiled/vm */
50 #include <sys/types.h>
55 #endif /* HAVE_UNISTD_H */
59 #endif /* HAVE_PWD_H */
65 #include <stat-time.h>
68 /* Loading a file, given an absolute filename. */
70 /* Hook to run when we load a file, perhaps to announce the fact somewhere.
71 Applied to the full name of the file. */
72 static SCM
*scm_loc_load_hook
;
74 /* The current reader (a fluid). */
75 static SCM the_reader
= SCM_BOOL_F
;
78 SCM_DEFINE (scm_primitive_load
, "primitive-load", 1, 0, 0,
80 "Load the file named @var{filename} and evaluate its contents in\n"
81 "the top-level environment. The load paths are not searched;\n"
82 "@var{filename} must either be a full pathname or be a pathname\n"
83 "relative to the current directory. If the variable\n"
84 "@code{%load-hook} is defined, it should be bound to a procedure\n"
85 "that will be called before any code is loaded. See the\n"
86 "documentation for @code{%load-hook} later in this section.")
87 #define FUNC_NAME s_scm_primitive_load
89 SCM hook
= *scm_loc_load_hook
;
91 SCM_VALIDATE_STRING (1, filename
);
92 if (scm_is_true (hook
) && scm_is_false (scm_procedure_p (hook
)))
93 SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f",
96 if (!scm_is_false (hook
))
97 scm_call_1 (hook
, filename
);
100 SCM port
= scm_open_file (filename
, scm_from_locale_string ("r"));
101 scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE
);
102 scm_i_dynwind_current_load_port (port
);
104 encoding
= scm_i_scan_for_encoding (port
);
106 scm_i_set_port_encoding_x (port
, encoding
);
108 /* The file has no encoding declared. We'll presume UTF-8, like
109 compile-file does. */
110 scm_i_set_port_encoding_x (port
, "UTF-8");
116 /* Lookup and use the current reader to read the next
118 reader
= scm_fluid_ref (the_reader
);
119 if (scm_is_false (reader
))
120 form
= scm_read (port
);
122 form
= scm_call_1 (reader
, port
);
124 if (SCM_EOF_OBJECT_P (form
))
127 scm_primitive_eval_x (form
);
131 scm_close_port (port
);
133 return SCM_UNSPECIFIED
;
138 scm_c_primitive_load (const char *filename
)
140 return scm_primitive_load (scm_from_locale_string (filename
));
144 /* Builtin path to scheme library files. */
145 #ifdef SCM_PKGDATA_DIR
146 SCM_DEFINE (scm_sys_package_data_dir
, "%package-data-dir", 0, 0, 0,
148 "Return the name of the directory where Scheme packages, modules and\n"
149 "libraries are kept. On most Unix systems, this will be\n"
150 "@samp{/usr/local/share/guile}.")
151 #define FUNC_NAME s_scm_sys_package_data_dir
153 return scm_from_locale_string (SCM_PKGDATA_DIR
);
156 #endif /* SCM_PKGDATA_DIR */
158 #ifdef SCM_LIBRARY_DIR
159 SCM_DEFINE (scm_sys_library_dir
, "%library-dir", 0,0,0,
161 "Return the directory where the Guile Scheme library files are installed.\n"
162 "E.g., may return \"/usr/share/guile/1.3.5\".")
163 #define FUNC_NAME s_scm_sys_library_dir
165 return scm_from_locale_string (SCM_LIBRARY_DIR
);
168 #endif /* SCM_LIBRARY_DIR */
171 SCM_DEFINE (scm_sys_site_dir
, "%site-dir", 0,0,0,
173 "Return the directory where users should install Scheme code for use\n"
174 "with this version of Guile.\n\n"
175 "E.g., may return \"/usr/share/guile/site/" SCM_EFFECTIVE_VERSION
"\".")
176 #define FUNC_NAME s_scm_sys_site_dir
178 return scm_from_locale_string (SCM_SITE_DIR
);
181 #endif /* SCM_SITE_DIR */
183 #ifdef SCM_GLOBAL_SITE_DIR
184 SCM_DEFINE (scm_sys_global_site_dir
, "%global-site-dir", 0,0,0,
186 "Return the directory where users should install Scheme code for use\n"
187 "with all versions of Guile.\n\n"
188 "E.g., may return \"/usr/share/guile/site\".")
189 #define FUNC_NAME s_scm_sys_global_site_dir
191 return scm_from_locale_string (SCM_GLOBAL_SITE_DIR
);
194 #endif /* SCM_GLOBAL_SITE_DIR */
198 /* Initializing the load path, and searching it. */
200 /* List of names of directories we search for files to load. */
201 static SCM
*scm_loc_load_path
;
203 /* List of extensions we try adding to the filenames. */
204 static SCM
*scm_loc_load_extensions
;
206 /* Like %load-path and %load-extensions, but for compiled files. */
207 static SCM
*scm_loc_load_compiled_path
;
208 static SCM
*scm_loc_load_compiled_extensions
;
210 /* Whether we should try to auto-compile. */
211 static SCM
*scm_loc_load_should_auto_compile
;
213 /* Whether to treat all auto-compiled files as stale. */
214 static SCM
*scm_loc_fresh_auto_compile
;
216 /* The fallback path for auto-compilation */
217 static SCM
*scm_loc_compile_fallback_path
;
219 SCM_DEFINE (scm_parse_path
, "parse-path", 1, 1, 0,
220 (SCM path
, SCM tail
),
221 "Parse @var{path}, which is expected to be a colon-separated\n"
222 "string, into a list and return the resulting list with\n"
223 "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n"
225 #define FUNC_NAME s_scm_parse_path
228 SCM sep
= SCM_MAKE_CHAR (';');
230 SCM sep
= SCM_MAKE_CHAR (':');
233 if (SCM_UNBNDP (tail
))
235 return (scm_is_false (path
)
237 : scm_append_x (scm_list_2 (scm_string_split (path
, sep
), tail
)));
242 /* Initialize the global variable %load-path, given the value of the
243 SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the
244 GUILE_LOAD_PATH environment variable. */
246 scm_init_load_path ()
252 #ifdef SCM_LIBRARY_DIR
253 env
= getenv ("GUILE_SYSTEM_PATH");
254 if (env
&& strcmp (env
, "") == 0)
255 /* special-case interpret system-path=="" as meaning no system path instead
259 path
= scm_parse_path (scm_from_locale_string (env
), path
);
261 path
= scm_list_4 (scm_from_locale_string (SCM_LIBRARY_DIR
),
262 scm_from_locale_string (SCM_SITE_DIR
),
263 scm_from_locale_string (SCM_GLOBAL_SITE_DIR
),
264 scm_from_locale_string (SCM_PKGDATA_DIR
));
266 env
= getenv ("GUILE_SYSTEM_COMPILED_PATH");
267 if (env
&& strcmp (env
, "") == 0)
271 cpath
= scm_parse_path (scm_from_locale_string (env
), cpath
);
273 cpath
= scm_cons (scm_from_locale_string (SCM_CCACHE_DIR
), cpath
);
275 #endif /* SCM_LIBRARY_DIR */
284 #define FALLBACK_DIR \
285 "guile/ccache/" SCM_EFFECTIVE_VERSION "-" SCM_OBJCODE_MACHINE_VERSION_STRING
287 if ((e
= getenv ("XDG_CACHE_HOME")))
288 snprintf (cachedir
, sizeof(cachedir
), "%s/" FALLBACK_DIR
, e
);
289 else if ((e
= getenv ("HOME")))
290 snprintf (cachedir
, sizeof(cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
292 else if ((pwd
= getpwuid (getuid ())) && pwd
->pw_dir
)
293 snprintf (cachedir
, sizeof(cachedir
), "%s/.cache/" FALLBACK_DIR
,
295 #endif /* HAVE_GETPWENT */
297 else if ((e
= getenv ("LOCALAPPDATA")))
298 snprintf (cachedir
, sizeof (cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
299 else if ((e
= getenv ("APPDATA")))
300 snprintf (cachedir
, sizeof (cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
301 #endif /* __MINGW32__ */
306 *scm_loc_compile_fallback_path
= scm_from_locale_string (cachedir
);
309 env
= getenv ("GUILE_LOAD_PATH");
311 path
= scm_parse_path (scm_from_locale_string (env
), path
);
313 env
= getenv ("GUILE_LOAD_COMPILED_PATH");
315 cpath
= scm_parse_path (scm_from_locale_string (env
), cpath
);
317 *scm_loc_load_path
= path
;
318 *scm_loc_load_compiled_path
= cpath
;
321 SCM scm_listofnullstr
;
323 /* Utility functions for assembling C strings in a buffer.
332 stringbuf_free (void *data
)
334 struct stringbuf
*buf
= (struct stringbuf
*)data
;
339 stringbuf_grow (struct stringbuf
*buf
)
341 size_t ptroff
= buf
->ptr
- buf
->buf
;
343 buf
->buf
= scm_realloc (buf
->buf
, buf
->buf_len
);
344 buf
->ptr
= buf
->buf
+ ptroff
;
348 stringbuf_cat_locale_string (struct stringbuf
*buf
, SCM str
)
350 size_t max_len
= buf
->buf_len
- (buf
->ptr
- buf
->buf
) - 1;
351 size_t len
= scm_to_locale_stringbuf (str
, buf
->ptr
, max_len
);
354 /* buffer is too small, double its size and try again.
356 stringbuf_grow (buf
);
357 stringbuf_cat_locale_string (buf
, str
);
361 /* string fits, terminate it and check for embedded '\0'.
363 buf
->ptr
[len
] = '\0';
364 if (strlen (buf
->ptr
) != len
)
365 scm_misc_error (NULL
,
366 "string contains #\\nul character: ~S",
373 stringbuf_cat (struct stringbuf
*buf
, char *str
)
375 size_t max_len
= buf
->buf_len
- (buf
->ptr
- buf
->buf
) - 1;
376 size_t len
= strlen (str
);
379 /* buffer is too small, double its size and try again.
381 stringbuf_grow (buf
);
382 stringbuf_cat (buf
, str
);
386 /* string fits, copy it into buffer.
388 strcpy (buf
->ptr
, str
);
395 scm_c_string_has_an_ext (char *str
, size_t len
, SCM extensions
)
397 for (; !scm_is_null (extensions
); extensions
= SCM_CDR (extensions
))
402 ext
= scm_to_locale_string (SCM_CAR (extensions
));
403 extlen
= strlen (ext
);
404 match
= (len
> extlen
&& str
[len
- extlen
- 1] == '.'
405 && strncmp (str
+ (len
- extlen
), ext
, extlen
) == 0);
413 /* Search PATH for a directory containing a file named FILENAME.
414 The file must be readable, and not a directory.
415 If we find one, return its full filename; otherwise, return #f.
416 If FILENAME is absolute, return it unchanged.
417 If given, EXTENSIONS is a list of strings; for each directory
418 in PATH, we search for FILENAME concatenated with each EXTENSION. */
419 SCM_DEFINE (scm_search_path
, "search-path", 2, 0, 1,
420 (SCM path
, SCM filename
, SCM rest
),
421 "Search @var{path} for a directory containing a file named\n"
422 "@var{filename}. The file must be readable, and not a directory.\n"
423 "If we find one, return its full filename; otherwise, return\n"
424 "@code{#f}. If @var{filename} is absolute, return it unchanged.\n"
425 "If given, @var{extensions} is a list of strings; for each\n"
426 "directory in @var{path}, we search for @var{filename}\n"
427 "concatenated with each @var{extension}.")
428 #define FUNC_NAME s_scm_search_path
430 struct stringbuf buf
;
431 char *filename_chars
;
433 SCM extensions
, require_exts
;
434 SCM result
= SCM_BOOL_F
;
436 if (SCM_UNBNDP (rest
) || scm_is_null (rest
))
438 /* Called either by Scheme code that didn't provide the optional
439 arguments, or C code that used the Guile 1.8 signature (2 required,
440 1 optional arg) and passed '() or nothing as the EXTENSIONS
442 extensions
= SCM_EOL
;
443 require_exts
= SCM_UNDEFINED
;
447 if (scm_is_null (SCM_CAR (rest
)) || scm_is_pair (SCM_CAR (rest
)))
449 /* Called by Scheme code written for 1.9. */
450 extensions
= SCM_CAR (rest
);
451 if (scm_is_null (SCM_CDR (rest
)))
452 require_exts
= SCM_UNDEFINED
;
455 require_exts
= SCM_CADR (rest
);
456 if (SCM_UNLIKELY (!scm_is_null (SCM_CDDR (rest
))))
457 scm_wrong_num_args (scm_from_locale_string (FUNC_NAME
));
462 /* Called by C code that uses the 1.8 signature, i.e., which
463 expects the 3rd argument to be EXTENSIONS. */
465 require_exts
= SCM_UNDEFINED
;
469 if (SCM_UNBNDP (extensions
))
470 extensions
= SCM_EOL
;
472 SCM_VALIDATE_LIST (3, extensions
);
474 if (SCM_UNBNDP (require_exts
))
475 require_exts
= SCM_BOOL_F
;
477 scm_dynwind_begin (0);
479 filename_chars
= scm_to_locale_string (filename
);
480 filename_len
= strlen (filename_chars
);
481 scm_dynwind_free (filename_chars
);
483 /* If FILENAME is absolute, return it unchanged. */
485 if (((filename_len
>= 1) &&
486 (filename_chars
[0] == '/' || filename_chars
[0] == '\\')) ||
487 ((filename_len
>= 3) && filename_chars
[1] == ':' &&
488 ((filename_chars
[0] >= 'a' && filename_chars
[0] <= 'z') ||
489 (filename_chars
[0] >= 'A' && filename_chars
[0] <= 'Z')) &&
490 (filename_chars
[2] == '/' || filename_chars
[2] == '\\')))
492 if (filename_len
>= 1 && filename_chars
[0] == '/')
496 if (scm_is_true (require_exts
) &&
497 !scm_c_string_has_an_ext (filename_chars
, filename_len
,
505 /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */
509 for (endp
= filename_chars
+ filename_len
- 1;
510 endp
>= filename_chars
;
515 if (scm_is_true (require_exts
) &&
516 !scm_c_string_has_an_ext (filename_chars
, filename_len
,
519 /* This filename has an extension, but not one of the right
524 /* This filename already has an extension, so cancel the
525 list of extensions. */
526 extensions
= SCM_EOL
;
530 else if (*endp
== '/' || *endp
== '\\')
532 else if (*endp
== '/')
534 /* This filename has no extension, so keep the current list
540 /* This simplifies the loop below a bit.
542 if (scm_is_null (extensions
))
543 extensions
= scm_listofnullstr
;
546 buf
.buf
= scm_malloc (buf
.buf_len
);
547 scm_dynwind_unwind_handler (stringbuf_free
, &buf
, SCM_F_WIND_EXPLICITLY
);
549 /* Try every path element.
551 for (; scm_is_pair (path
); path
= SCM_CDR (path
))
553 SCM dir
= SCM_CAR (path
);
558 stringbuf_cat_locale_string (&buf
, dir
);
560 /* Concatenate the path name and the filename. */
563 if ((buf
.ptr
> buf
.buf
) && (buf
.ptr
[-1] != '/') && (buf
.ptr
[-1] != '\\'))
565 if ((buf
.ptr
> buf
.buf
) && (buf
.ptr
[-1] != '/'))
567 stringbuf_cat (&buf
, "/");
569 stringbuf_cat (&buf
, filename_chars
);
570 sans_ext_len
= buf
.ptr
- buf
.buf
;
572 /* Try every extension. */
573 for (exts
= extensions
; scm_is_pair (exts
); exts
= SCM_CDR (exts
))
575 SCM ext
= SCM_CAR (exts
);
578 buf
.ptr
= buf
.buf
+ sans_ext_len
;
579 stringbuf_cat_locale_string (&buf
, ext
);
581 /* If the file exists at all, we should return it. If the
582 file is inaccessible, then that's an error. */
584 if (stat (buf
.buf
, &mode
) == 0
585 && ! (mode
.st_mode
& S_IFDIR
))
587 result
= scm_from_locale_string (buf
.buf
);
592 if (!SCM_NULL_OR_NIL_P (exts
))
593 scm_wrong_type_arg_msg (NULL
, 0, extensions
, "proper list");
596 if (!SCM_NULL_OR_NIL_P (path
))
597 scm_wrong_type_arg_msg (NULL
, 0, path
, "proper list");
606 /* Search %load-path for a directory containing a file named FILENAME.
607 The file must be readable, and not a directory.
608 If we find one, return its full filename; otherwise, return #f.
609 If FILENAME is absolute, return it unchanged. */
610 SCM_DEFINE (scm_sys_search_load_path
, "%search-load-path", 1, 0, 0,
612 "Search @var{%load-path} for the file named @var{filename},\n"
613 "which must be readable by the current user. If @var{filename}\n"
614 "is found in the list of paths to search or is an absolute\n"
615 "pathname, return its full pathname. Otherwise, return\n"
616 "@code{#f}. Filenames may have any of the optional extensions\n"
617 "in the @code{%load-extensions} list; @code{%search-load-path}\n"
618 "will try each extension automatically.")
619 #define FUNC_NAME s_scm_sys_search_load_path
621 SCM path
= *scm_loc_load_path
;
622 SCM exts
= *scm_loc_load_extensions
;
623 SCM_VALIDATE_STRING (1, filename
);
625 if (scm_ilength (path
) < 0)
626 SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL
);
627 if (scm_ilength (exts
) < 0)
628 SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL
);
629 return scm_search_path (path
, filename
, exts
);
634 /* Return true if COMPILED_FILENAME is newer than source file
635 FULL_FILENAME, false otherwise. Also return false if one of the
636 files cannot be stat'd. */
638 compiled_is_fresh (SCM full_filename
, SCM compiled_filename
)
640 char *source
, *compiled
;
641 struct stat stat_source
, stat_compiled
;
642 int compiled_is_newer
;
644 source
= scm_to_locale_string (full_filename
);
645 compiled
= scm_to_locale_string (compiled_filename
);
647 if (stat (source
, &stat_source
) == 0
648 && stat (compiled
, &stat_compiled
) == 0)
650 struct timespec source_mtime
, compiled_mtime
;
652 source_mtime
= get_stat_mtime (&stat_source
);
653 compiled_mtime
= get_stat_mtime (&stat_compiled
);
655 if (source_mtime
.tv_sec
< compiled_mtime
.tv_sec
656 || (source_mtime
.tv_sec
== compiled_mtime
.tv_sec
657 && source_mtime
.tv_nsec
<= compiled_mtime
.tv_nsec
))
658 compiled_is_newer
= 1;
661 compiled_is_newer
= 0;
662 scm_puts (";;; note: source file ", scm_current_error_port ());
663 scm_puts (source
, scm_current_error_port ());
664 scm_puts ("\n;;; newer than compiled ", scm_current_error_port ());
665 scm_puts (compiled
, scm_current_error_port ());
666 scm_puts ("\n", scm_current_error_port ());
670 /* At least one of the files isn't accessible. */
671 compiled_is_newer
= 0;
676 return compiled_is_newer
;
679 SCM_KEYWORD (kw_env
, "env");
680 SCM_KEYWORD (kw_opts
, "opts");
682 SCM_SYMBOL (sym_compile_file
, "compile-file");
683 SCM_SYMBOL (sym_auto_compilation_options
, "%auto-compilation-options");
686 do_try_auto_compile (void *data
)
688 SCM source
= PTR2SCM (data
);
689 SCM comp_mod
, compile_file
;
691 scm_puts (";;; compiling ", scm_current_error_port ());
692 scm_display (source
, scm_current_error_port ());
693 scm_newline (scm_current_error_port ());
695 comp_mod
= scm_c_resolve_module ("system base compile");
696 compile_file
= scm_module_variable (comp_mod
, sym_compile_file
);
698 if (scm_is_true (compile_file
))
700 /* Auto-compile in the context of the current module. */
704 opts
= scm_module_variable (scm_the_root_module (),
705 sym_auto_compilation_options
);
706 if (SCM_VARIABLEP (opts
))
707 opts
= SCM_VARIABLE_REF (opts
);
715 args
[4] = scm_current_module ();
717 /* Assume `*current-warning-prefix*' has an appropriate value. */
718 res
= scm_call_n (scm_variable_ref (compile_file
), args
, 5);
720 scm_puts (";;; compiled ", scm_current_error_port ());
721 scm_display (res
, scm_current_error_port ());
722 scm_newline (scm_current_error_port ());
727 scm_puts (";;; it seems ", scm_current_error_port ());
728 scm_display (source
, scm_current_error_port ());
729 scm_puts ("\n;;; is part of the compiler; skipping auto-compilation\n",
730 scm_current_error_port ());
736 auto_compile_catch_handler (void *data
, SCM tag
, SCM throw_args
)
738 SCM source
= PTR2SCM (data
);
741 oport
= scm_open_output_string ();
742 scm_print_exception (oport
, SCM_BOOL_F
, tag
, throw_args
);
744 scm_puts (";;; WARNING: compilation of ", scm_current_error_port ());
745 scm_display (source
, scm_current_error_port ());
746 scm_puts (" failed:\n", scm_current_error_port ());
748 lines
= scm_string_split (scm_get_output_string (oport
),
749 SCM_MAKE_CHAR ('\n'));
750 for (; scm_is_pair (lines
); lines
= scm_cdr (lines
))
751 if (scm_c_string_length (scm_car (lines
)))
753 scm_puts (";;; ", scm_current_error_port ());
754 scm_display (scm_car (lines
), scm_current_error_port ());
755 scm_newline (scm_current_error_port ());
758 scm_close_port (oport
);
763 SCM_DEFINE (scm_sys_warn_auto_compilation_enabled
, "%warn-auto-compilation-enabled", 0, 0, 0,
765 #define FUNC_NAME s_scm_sys_warn_auto_compilation_enabled
767 static int message_shown
= 0;
771 scm_puts (";;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0\n"
772 ";;; or pass the --no-auto-compile argument to disable.\n",
773 scm_current_error_port ());
777 return SCM_UNSPECIFIED
;
782 scm_try_auto_compile (SCM source
)
784 if (scm_is_false (*scm_loc_load_should_auto_compile
))
787 scm_sys_warn_auto_compilation_enabled ();
788 return scm_c_catch (SCM_BOOL_T
,
791 auto_compile_catch_handler
,
796 SCM_DEFINE (scm_primitive_load_path
, "primitive-load-path", 0, 0, 1,
798 "Search @var{%load-path} for the file named @var{filename} and\n"
799 "load it into the top-level environment. If @var{filename} is a\n"
800 "relative pathname and is not found in the list of search paths,\n"
801 "an error is signalled, unless the optional argument\n"
802 "@var{exception_on_not_found} is @code{#f}, in which case\n"
803 "@code{#f} is returned instead.")
804 #define FUNC_NAME s_scm_primitive_load_path
806 SCM filename
, exception_on_not_found
;
807 SCM full_filename
, compiled_filename
;
808 int compiled_is_fallback
= 0;
809 SCM hook
= *scm_loc_load_hook
;
811 if (scm_is_true (hook
) && scm_is_false (scm_procedure_p (hook
)))
812 SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f",
815 if (scm_is_string (args
))
817 /* C code written for 1.8 and earlier expects this function to take a
818 single argument (the file name). */
820 exception_on_not_found
= SCM_UNDEFINED
;
824 /* Starting from 1.9, this function takes 1 required and 1 optional
828 SCM_VALIDATE_LIST_COPYLEN (SCM_ARG1
, args
, len
);
829 if (len
< 1 || len
> 2)
830 scm_error_num_args_subr (FUNC_NAME
);
832 filename
= SCM_CAR (args
);
833 SCM_VALIDATE_STRING (SCM_ARG1
, filename
);
835 exception_on_not_found
= len
> 1 ? SCM_CADR (args
) : SCM_UNDEFINED
;
838 if (SCM_UNBNDP (exception_on_not_found
))
839 exception_on_not_found
= SCM_BOOL_T
;
841 full_filename
= scm_sys_search_load_path (filename
);
842 if (scm_is_string (full_filename
))
843 full_filename
= scm_canonicalize_path (full_filename
);
846 scm_search_path (*scm_loc_load_compiled_path
,
848 scm_list_2 (*scm_loc_load_compiled_extensions
,
851 if (scm_is_false (compiled_filename
)
852 && scm_is_true (full_filename
)
853 && scm_is_true (*scm_loc_compile_fallback_path
)
854 && scm_is_false (*scm_loc_fresh_auto_compile
)
855 && scm_is_pair (*scm_loc_load_compiled_extensions
)
856 && scm_is_string (scm_car (*scm_loc_load_compiled_extensions
)))
858 SCM fallback
= scm_string_append
859 (scm_list_3 (*scm_loc_compile_fallback_path
,
861 scm_car (*scm_loc_load_compiled_extensions
)));
862 if (scm_is_true (scm_stat (fallback
, SCM_BOOL_F
)))
864 compiled_filename
= fallback
;
865 compiled_is_fallback
= 1;
869 if (scm_is_false (full_filename
) && scm_is_false (compiled_filename
))
871 if (scm_is_true (exception_on_not_found
))
872 SCM_MISC_ERROR ("Unable to find file ~S in load path",
873 scm_list_1 (filename
));
878 if (!scm_is_false (hook
))
879 scm_call_1 (hook
, (scm_is_true (full_filename
)
880 ? full_filename
: compiled_filename
));
882 if (scm_is_false (full_filename
)
883 || (scm_is_true (compiled_filename
)
884 && compiled_is_fresh (full_filename
, compiled_filename
)))
885 return scm_load_compiled_with_vm (compiled_filename
);
887 /* Perhaps there was the installed .go that was stale, but our fallback is
888 fresh. Let's try that. Duplicating code, but perhaps that's OK. */
890 if (!compiled_is_fallback
891 && scm_is_true (*scm_loc_compile_fallback_path
)
892 && scm_is_false (*scm_loc_fresh_auto_compile
)
893 && scm_is_pair (*scm_loc_load_compiled_extensions
)
894 && scm_is_string (scm_car (*scm_loc_load_compiled_extensions
)))
896 SCM fallback
= scm_string_append
897 (scm_list_3 (*scm_loc_compile_fallback_path
,
899 scm_car (*scm_loc_load_compiled_extensions
)));
900 if (scm_is_true (scm_stat (fallback
, SCM_BOOL_F
))
901 && compiled_is_fresh (full_filename
, fallback
))
903 scm_puts (";;; found fresh local cache at ", scm_current_error_port ());
904 scm_display (fallback
, scm_current_error_port ());
905 scm_newline (scm_current_error_port ());
906 return scm_load_compiled_with_vm (fallback
);
910 /* Otherwise, we bottom out here. */
912 SCM freshly_compiled
= scm_try_auto_compile (full_filename
);
914 if (scm_is_true (freshly_compiled
))
915 return scm_load_compiled_with_vm (freshly_compiled
);
917 return scm_primitive_load (full_filename
);
923 scm_c_primitive_load_path (const char *filename
)
925 return scm_primitive_load_path (scm_from_locale_string (filename
));
929 scm_init_eval_in_scheme (void)
931 SCM eval_scm
, eval_go
;
932 eval_scm
= scm_search_path (*scm_loc_load_path
,
933 scm_from_locale_string ("ice-9/eval.scm"),
935 eval_go
= scm_search_path (*scm_loc_load_compiled_path
,
936 scm_from_locale_string ("ice-9/eval.go"),
939 if (scm_is_true (eval_scm
) && scm_is_true (eval_go
)
940 && compiled_is_fresh (eval_scm
, eval_go
))
941 scm_load_compiled_with_vm (eval_go
);
943 /* if we have no eval.go, we shouldn't load any compiled code at all */
944 *scm_loc_load_compiled_path
= SCM_EOL
;
948 /* Information about the build environment. */
950 SCM_VARIABLE_INIT (sys_host_type
, "%host-type",
951 scm_from_locale_string (HOST_TYPE
));
954 /* Initialize the scheme variable %guile-build-info, based on data
955 provided by the Makefile, via libpath.h. */
959 static struct { char *name
; char *value
; } info
[] = SCM_BUILD_INFO
;
960 SCM
*loc
= SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL
));
963 for (i
= 0; i
< (sizeof (info
) / sizeof (info
[0])); i
++)
965 SCM key
= scm_from_locale_symbol (info
[i
].name
);
966 SCM val
= scm_from_locale_string (info
[i
].value
);
967 *loc
= scm_acons (key
, val
, *loc
);
969 #ifdef PACKAGE_PACKAGER
970 *loc
= scm_acons (scm_from_latin1_symbol ("packager"),
971 scm_from_latin1_string (PACKAGE_PACKAGER
),
974 #ifdef PACKAGE_PACKAGER_VERSION
975 *loc
= scm_acons (scm_from_latin1_symbol ("packager-version"),
976 scm_from_latin1_string (PACKAGE_PACKAGER_VERSION
),
979 #ifdef PACKAGE_PACKAGER_BUG_REPORTS
980 *loc
= scm_acons (scm_from_latin1_symbol ("packager-bug-reports"),
981 scm_from_latin1_string (PACKAGE_PACKAGER_BUG_REPORTS
),
990 scm_listofnullstr
= scm_list_1 (scm_nullstr
);
991 scm_loc_load_path
= SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL
));
992 scm_loc_load_extensions
993 = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions",
994 scm_list_2 (scm_from_locale_string (".scm"),
996 scm_loc_load_compiled_path
997 = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL
));
998 scm_loc_load_compiled_extensions
999 = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions",
1000 scm_list_1 (scm_from_locale_string (".go"))));
1001 scm_loc_load_hook
= SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F
));
1003 scm_loc_compile_fallback_path
1004 = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F
));
1005 scm_loc_load_should_auto_compile
1006 = SCM_VARIABLE_LOC (scm_c_define ("%load-should-auto-compile", SCM_BOOL_F
));
1007 scm_loc_fresh_auto_compile
1008 = SCM_VARIABLE_LOC (scm_c_define ("%fresh-auto-compile", SCM_BOOL_F
));
1010 the_reader
= scm_make_fluid ();
1011 scm_fluid_set_x (the_reader
, SCM_BOOL_F
);
1012 scm_c_define("current-reader", the_reader
);
1014 scm_c_define ("load-compiled",
1015 scm_c_make_gsubr ("load-compiled/vm", 1, 0, 0,
1016 scm_load_compiled_with_vm
));
1020 #include "libguile/load.x"
1024 scm_init_load_should_auto_compile ()
1026 char *auto_compile
= getenv ("GUILE_AUTO_COMPILE");
1028 if (auto_compile
&& strcmp (auto_compile
, "0") == 0)
1030 *scm_loc_load_should_auto_compile
= SCM_BOOL_F
;
1031 *scm_loc_fresh_auto_compile
= SCM_BOOL_F
;
1033 /* Allow "freshen" also. */
1034 else if (auto_compile
&& strncmp (auto_compile
, "fresh", 5) == 0)
1036 *scm_loc_load_should_auto_compile
= SCM_BOOL_T
;
1037 *scm_loc_fresh_auto_compile
= SCM_BOOL_T
;
1041 *scm_loc_load_should_auto_compile
= SCM_BOOL_T
;
1042 *scm_loc_fresh_auto_compile
= SCM_BOOL_F
;