1 /* Copyright (C) 1995, 1996, 1998, 1999, 2000, 2001, 2004, 2006, 2008,
2 * 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
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.
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.
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
30 #include "libguile/_scm.h"
31 #include "libguile/private-gc.h" /* scm_getenv_int */
32 #include "libguile/libpath.h"
33 #include "libguile/fports.h"
34 #include "libguile/read.h"
35 #include "libguile/eval.h"
36 #include "libguile/throw.h"
37 #include "libguile/alist.h"
38 #include "libguile/dynwind.h"
39 #include "libguile/root.h"
40 #include "libguile/strings.h"
41 #include "libguile/modules.h"
42 #include "libguile/chars.h"
43 #include "libguile/srfi-13.h"
45 #include "libguile/validate.h"
46 #include "libguile/load.h"
47 #include "libguile/fluids.h"
49 #include "libguile/vm.h" /* for load-compiled/vm */
51 #include <sys/types.h>
56 #endif /* HAVE_UNISTD_H */
60 #endif /* HAVE_PWD_H */
66 #include <stat-time.h>
69 /* Loading a file, given an absolute filename. */
71 /* Hook to run when we load a file, perhaps to announce the fact somewhere.
72 Applied to the full name of the file. */
73 static SCM
*scm_loc_load_hook
;
75 /* The current reader (a fluid). */
76 static SCM the_reader
= SCM_BOOL_F
;
79 SCM_DEFINE (scm_primitive_load
, "primitive-load", 1, 0, 0,
81 "Load the file named @var{filename} and evaluate its contents in\n"
82 "the top-level environment. The load paths are not searched;\n"
83 "@var{filename} must either be a full pathname or be a pathname\n"
84 "relative to the current directory. If the variable\n"
85 "@code{%load-hook} is defined, it should be bound to a procedure\n"
86 "that will be called before any code is loaded. See the\n"
87 "documentation for @code{%load-hook} later in this section.")
88 #define FUNC_NAME s_scm_primitive_load
90 SCM hook
= *scm_loc_load_hook
;
91 SCM ret
= SCM_UNSPECIFIED
;
94 SCM_VALIDATE_STRING (1, filename
);
95 if (scm_is_true (hook
) && scm_is_false (scm_procedure_p (hook
)))
96 SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f",
99 if (!scm_is_false (hook
))
100 scm_call_1 (hook
, filename
);
105 port
= scm_open_file (filename
, scm_from_locale_string ("r"));
106 scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE
);
107 scm_i_dynwind_current_load_port (port
);
109 encoding
= scm_i_scan_for_encoding (port
);
111 scm_i_set_port_encoding_x (port
, encoding
);
113 /* The file has no encoding declared. We'll presume UTF-8, like
114 compile-file does. */
115 scm_i_set_port_encoding_x (port
, "UTF-8");
121 /* Lookup and use the current reader to read the next
123 reader
= scm_fluid_ref (the_reader
);
124 if (scm_is_false (reader
))
125 form
= scm_read (port
);
127 form
= scm_call_1 (reader
, port
);
129 if (SCM_EOF_OBJECT_P (form
))
132 ret
= scm_primitive_eval_x (form
);
136 scm_close_port (port
);
143 scm_c_primitive_load (const char *filename
)
145 return scm_primitive_load (scm_from_locale_string (filename
));
149 /* Builtin path to scheme library files. */
150 #ifdef SCM_PKGDATA_DIR
151 SCM_DEFINE (scm_sys_package_data_dir
, "%package-data-dir", 0, 0, 0,
153 "Return the name of the directory where Scheme packages, modules and\n"
154 "libraries are kept. On most Unix systems, this will be\n"
155 "@samp{/usr/local/share/guile}.")
156 #define FUNC_NAME s_scm_sys_package_data_dir
158 return scm_from_locale_string (SCM_PKGDATA_DIR
);
161 #endif /* SCM_PKGDATA_DIR */
163 #ifdef SCM_LIBRARY_DIR
164 SCM_DEFINE (scm_sys_library_dir
, "%library-dir", 0,0,0,
166 "Return the directory where the Guile Scheme library files are installed.\n"
167 "E.g., may return \"/usr/share/guile/1.3.5\".")
168 #define FUNC_NAME s_scm_sys_library_dir
170 return scm_from_locale_string (SCM_LIBRARY_DIR
);
173 #endif /* SCM_LIBRARY_DIR */
176 SCM_DEFINE (scm_sys_site_dir
, "%site-dir", 0,0,0,
178 "Return the directory where users should install Scheme code for use\n"
179 "with this version of Guile.\n\n"
180 "E.g., may return \"/usr/share/guile/site/" SCM_EFFECTIVE_VERSION
"\".")
181 #define FUNC_NAME s_scm_sys_site_dir
183 return scm_from_locale_string (SCM_SITE_DIR
);
186 #endif /* SCM_SITE_DIR */
188 #ifdef SCM_GLOBAL_SITE_DIR
189 SCM_DEFINE (scm_sys_global_site_dir
, "%global-site-dir", 0,0,0,
191 "Return the directory where users should install Scheme code for use\n"
192 "with all versions of Guile.\n\n"
193 "E.g., may return \"/usr/share/guile/site\".")
194 #define FUNC_NAME s_scm_sys_global_site_dir
196 return scm_from_locale_string (SCM_GLOBAL_SITE_DIR
);
199 #endif /* SCM_GLOBAL_SITE_DIR */
203 /* Initializing the load path, and searching it. */
205 /* List of names of directories we search for files to load. */
206 static SCM
*scm_loc_load_path
;
208 /* List of extensions we try adding to the filenames. */
209 static SCM
*scm_loc_load_extensions
;
211 /* Like %load-path and %load-extensions, but for compiled files. */
212 static SCM
*scm_loc_load_compiled_path
;
213 static SCM
*scm_loc_load_compiled_extensions
;
215 /* Whether we should try to auto-compile. */
216 static SCM
*scm_loc_load_should_auto_compile
;
218 /* Whether to treat all auto-compiled files as stale. */
219 static SCM
*scm_loc_fresh_auto_compile
;
221 /* The fallback path for auto-compilation */
222 static SCM
*scm_loc_compile_fallback_path
;
224 SCM_DEFINE (scm_parse_path
, "parse-path", 1, 1, 0,
225 (SCM path
, SCM tail
),
226 "Parse @var{path}, which is expected to be a colon-separated\n"
227 "string, into a list and return the resulting list with\n"
228 "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n"
230 #define FUNC_NAME s_scm_parse_path
233 SCM sep
= SCM_MAKE_CHAR (';');
235 SCM sep
= SCM_MAKE_CHAR (':');
238 if (SCM_UNBNDP (tail
))
240 return (scm_is_false (path
)
242 : scm_append_x (scm_list_2 (scm_string_split (path
, sep
), tail
)));
247 /* Initialize the global variable %load-path, given the value of the
248 SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the
249 GUILE_LOAD_PATH environment variable. */
251 scm_init_load_path ()
257 #ifdef SCM_LIBRARY_DIR
258 env
= getenv ("GUILE_SYSTEM_PATH");
259 if (env
&& strcmp (env
, "") == 0)
260 /* special-case interpret system-path=="" as meaning no system path instead
264 path
= scm_parse_path (scm_from_locale_string (env
), path
);
266 path
= scm_list_4 (scm_from_locale_string (SCM_LIBRARY_DIR
),
267 scm_from_locale_string (SCM_SITE_DIR
),
268 scm_from_locale_string (SCM_GLOBAL_SITE_DIR
),
269 scm_from_locale_string (SCM_PKGDATA_DIR
));
271 env
= getenv ("GUILE_SYSTEM_COMPILED_PATH");
272 if (env
&& strcmp (env
, "") == 0)
276 cpath
= scm_parse_path (scm_from_locale_string (env
), cpath
);
279 cpath
= scm_list_2 (scm_from_locale_string (SCM_CCACHE_DIR
),
280 scm_from_locale_string (SCM_SITE_CCACHE_DIR
));
283 #endif /* SCM_LIBRARY_DIR */
292 #define FALLBACK_DIR \
293 "guile/ccache/" SCM_EFFECTIVE_VERSION "-" SCM_OBJCODE_MACHINE_VERSION_STRING
295 if ((e
= getenv ("XDG_CACHE_HOME")))
296 snprintf (cachedir
, sizeof(cachedir
), "%s/" FALLBACK_DIR
, e
);
297 else if ((e
= getenv ("HOME")))
298 snprintf (cachedir
, sizeof(cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
300 else if ((pwd
= getpwuid (getuid ())) && pwd
->pw_dir
)
301 snprintf (cachedir
, sizeof(cachedir
), "%s/.cache/" FALLBACK_DIR
,
303 #endif /* HAVE_GETPWENT */
305 else if ((e
= getenv ("LOCALAPPDATA")))
306 snprintf (cachedir
, sizeof (cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
307 else if ((e
= getenv ("APPDATA")))
308 snprintf (cachedir
, sizeof (cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
309 #endif /* __MINGW32__ */
314 *scm_loc_compile_fallback_path
= scm_from_locale_string (cachedir
);
317 env
= getenv ("GUILE_LOAD_PATH");
319 path
= scm_parse_path (scm_from_locale_string (env
), path
);
321 env
= getenv ("GUILE_LOAD_COMPILED_PATH");
323 cpath
= scm_parse_path (scm_from_locale_string (env
), cpath
);
325 *scm_loc_load_path
= path
;
326 *scm_loc_load_compiled_path
= cpath
;
329 SCM scm_listofnullstr
;
331 /* Utility functions for assembling C strings in a buffer.
340 stringbuf_free (void *data
)
342 struct stringbuf
*buf
= (struct stringbuf
*)data
;
347 stringbuf_grow (struct stringbuf
*buf
)
349 size_t ptroff
= buf
->ptr
- buf
->buf
;
351 buf
->buf
= scm_realloc (buf
->buf
, buf
->buf_len
);
352 buf
->ptr
= buf
->buf
+ ptroff
;
356 stringbuf_cat_locale_string (struct stringbuf
*buf
, SCM str
)
358 size_t max_len
= buf
->buf_len
- (buf
->ptr
- buf
->buf
) - 1;
359 size_t len
= scm_to_locale_stringbuf (str
, buf
->ptr
, max_len
);
362 /* buffer is too small, double its size and try again.
364 stringbuf_grow (buf
);
365 stringbuf_cat_locale_string (buf
, str
);
369 /* string fits, terminate it and check for embedded '\0'.
371 buf
->ptr
[len
] = '\0';
372 if (strlen (buf
->ptr
) != len
)
373 scm_misc_error (NULL
,
374 "string contains #\\nul character: ~S",
381 stringbuf_cat (struct stringbuf
*buf
, char *str
)
383 size_t max_len
= buf
->buf_len
- (buf
->ptr
- buf
->buf
) - 1;
384 size_t len
= strlen (str
);
387 /* buffer is too small, double its size and try again.
389 stringbuf_grow (buf
);
390 stringbuf_cat (buf
, str
);
394 /* string fits, copy it into buffer.
396 strcpy (buf
->ptr
, str
);
403 scm_c_string_has_an_ext (char *str
, size_t len
, SCM extensions
)
405 for (; !scm_is_null (extensions
); extensions
= SCM_CDR (extensions
))
410 ext
= scm_to_locale_string (SCM_CAR (extensions
));
411 extlen
= strlen (ext
);
412 match
= (len
> extlen
&& str
[len
- extlen
- 1] == '.'
413 && strncmp (str
+ (len
- extlen
), ext
, extlen
) == 0);
421 /* Search PATH for a directory containing a file named FILENAME.
422 The file must be readable, and not a directory.
423 If we find one, return its full pathname; otherwise, return #f.
424 If FILENAME is absolute, return it unchanged.
425 We also fill *stat_buf corresponding to the returned pathname.
426 If given, EXTENSIONS is a list of strings; for each directory
427 in PATH, we search for FILENAME concatenated with each EXTENSION. */
429 search_path (SCM path
, SCM filename
, SCM extensions
, SCM require_exts
,
430 struct stat
*stat_buf
)
432 struct stringbuf buf
;
433 char *filename_chars
;
435 SCM result
= SCM_BOOL_F
;
437 if (scm_ilength (path
) < 0)
438 scm_misc_error ("%search-path", "path is not a proper list: ~a",
440 if (scm_ilength (extensions
) < 0)
441 scm_misc_error ("%search-path", "bad extensions list: ~a",
442 scm_list_1 (extensions
));
444 scm_dynwind_begin (0);
446 filename_chars
= scm_to_locale_string (filename
);
447 filename_len
= strlen (filename_chars
);
448 scm_dynwind_free (filename_chars
);
450 /* If FILENAME is absolute and is still valid, return it unchanged. */
452 if (((filename_len
>= 1) &&
453 (filename_chars
[0] == '/' || filename_chars
[0] == '\\')) ||
454 ((filename_len
>= 3) && filename_chars
[1] == ':' &&
455 ((filename_chars
[0] >= 'a' && filename_chars
[0] <= 'z') ||
456 (filename_chars
[0] >= 'A' && filename_chars
[0] <= 'Z')) &&
457 (filename_chars
[2] == '/' || filename_chars
[2] == '\\')))
459 if (filename_len
>= 1 && filename_chars
[0] == '/')
462 if ((scm_is_false (require_exts
) ||
463 scm_c_string_has_an_ext (filename_chars
, filename_len
,
465 && stat (filename_chars
, stat_buf
) == 0
466 && !(stat_buf
->st_mode
& S_IFDIR
))
471 /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */
475 for (endp
= filename_chars
+ filename_len
- 1;
476 endp
>= filename_chars
;
481 if (scm_is_true (require_exts
) &&
482 !scm_c_string_has_an_ext (filename_chars
, filename_len
,
485 /* This filename has an extension, but not one of the right
489 /* This filename already has an extension, so cancel the
490 list of extensions. */
491 extensions
= SCM_EOL
;
495 else if (*endp
== '/' || *endp
== '\\')
497 else if (*endp
== '/')
499 /* This filename has no extension, so keep the current list
505 /* This simplifies the loop below a bit.
507 if (scm_is_null (extensions
))
508 extensions
= scm_listofnullstr
;
511 buf
.buf
= scm_malloc (buf
.buf_len
);
512 scm_dynwind_unwind_handler (stringbuf_free
, &buf
, SCM_F_WIND_EXPLICITLY
);
514 /* Try every path element.
516 for (; scm_is_pair (path
); path
= SCM_CDR (path
))
518 SCM dir
= SCM_CAR (path
);
523 stringbuf_cat_locale_string (&buf
, dir
);
525 /* Concatenate the path name and the filename. */
528 if ((buf
.ptr
> buf
.buf
) && (buf
.ptr
[-1] != '/') && (buf
.ptr
[-1] != '\\'))
530 if ((buf
.ptr
> buf
.buf
) && (buf
.ptr
[-1] != '/'))
532 stringbuf_cat (&buf
, "/");
534 stringbuf_cat (&buf
, filename_chars
);
535 sans_ext_len
= buf
.ptr
- buf
.buf
;
537 /* Try every extension. */
538 for (exts
= extensions
; scm_is_pair (exts
); exts
= SCM_CDR (exts
))
540 SCM ext
= SCM_CAR (exts
);
542 buf
.ptr
= buf
.buf
+ sans_ext_len
;
543 stringbuf_cat_locale_string (&buf
, ext
);
545 /* If the file exists at all, we should return it. If the
546 file is inaccessible, then that's an error. */
548 if (stat (buf
.buf
, stat_buf
) == 0
549 && ! (stat_buf
->st_mode
& S_IFDIR
))
551 result
= scm_from_locale_string (buf
.buf
);
556 if (!SCM_NULL_OR_NIL_P (exts
))
557 scm_wrong_type_arg_msg (NULL
, 0, extensions
, "proper list");
560 if (!SCM_NULL_OR_NIL_P (path
))
561 scm_wrong_type_arg_msg (NULL
, 0, path
, "proper list");
568 SCM_DEFINE (scm_search_path
, "search-path", 2, 0, 1,
569 (SCM path
, SCM filename
, SCM rest
),
570 "Search @var{path} for a directory containing a file named\n"
571 "@var{filename}. The file must be readable, and not a directory.\n"
572 "If we find one, return its full filename; otherwise, return\n"
573 "@code{#f}. If @var{filename} is absolute, return it unchanged.\n"
574 "If given, @var{rest} is a list of extension strings; for each\n"
575 "directory in @var{path}, we search for @var{filename}\n"
576 "concatenated with each extension.")
577 #define FUNC_NAME s_scm_search_path
579 SCM extensions
, require_exts
;
580 struct stat stat_buf
;
582 if (SCM_UNBNDP (rest
) || scm_is_null (rest
))
584 /* Called either by Scheme code that didn't provide the optional
585 arguments, or C code that used the Guile 1.8 signature (2 required,
586 1 optional arg) and passed '() or nothing as the EXTENSIONS
588 extensions
= SCM_EOL
;
589 require_exts
= SCM_UNDEFINED
;
593 if (scm_is_null (SCM_CAR (rest
)) || scm_is_pair (SCM_CAR (rest
)))
595 /* Called by Scheme code written for 1.9. */
596 extensions
= SCM_CAR (rest
);
597 if (scm_is_null (SCM_CDR (rest
)))
598 require_exts
= SCM_UNDEFINED
;
601 require_exts
= SCM_CADR (rest
);
602 if (SCM_UNLIKELY (!scm_is_null (SCM_CDDR (rest
))))
603 scm_wrong_num_args (scm_from_locale_string (FUNC_NAME
));
608 /* Called by C code that uses the 1.8 signature, i.e., which
609 expects the 3rd argument to be EXTENSIONS. */
611 require_exts
= SCM_UNDEFINED
;
615 if (SCM_UNBNDP (extensions
))
616 extensions
= SCM_EOL
;
618 if (SCM_UNBNDP (require_exts
))
619 require_exts
= SCM_BOOL_F
;
621 return search_path (path
, filename
, extensions
, require_exts
, &stat_buf
);
626 /* Search %load-path for a directory containing a file named FILENAME.
627 The file must be readable, and not a directory.
628 If we find one, return its full filename; otherwise, return #f.
629 If FILENAME is absolute, return it unchanged. */
630 SCM_DEFINE (scm_sys_search_load_path
, "%search-load-path", 1, 0, 0,
632 "Search @var{%load-path} for the file named @var{filename},\n"
633 "which must be readable by the current user. If @var{filename}\n"
634 "is found in the list of paths to search or is an absolute\n"
635 "pathname, return its full pathname. Otherwise, return\n"
636 "@code{#f}. Filenames may have any of the optional extensions\n"
637 "in the @code{%load-extensions} list; @code{%search-load-path}\n"
638 "will try each extension automatically.")
639 #define FUNC_NAME s_scm_sys_search_load_path
641 struct stat stat_buf
;
643 SCM_VALIDATE_STRING (1, filename
);
645 return search_path (*scm_loc_load_path
, filename
, *scm_loc_load_extensions
,
646 SCM_BOOL_F
, &stat_buf
);
651 /* Return true if COMPILED_FILENAME is newer than source file
652 FULL_FILENAME, false otherwise. */
654 compiled_is_fresh (SCM full_filename
, SCM compiled_filename
,
655 struct stat
*stat_source
, struct stat
*stat_compiled
)
657 int compiled_is_newer
;
658 struct timespec source_mtime
, compiled_mtime
;
660 source_mtime
= get_stat_mtime (stat_source
);
661 compiled_mtime
= get_stat_mtime (stat_compiled
);
663 if (source_mtime
.tv_sec
< compiled_mtime
.tv_sec
664 || (source_mtime
.tv_sec
== compiled_mtime
.tv_sec
665 && source_mtime
.tv_nsec
<= compiled_mtime
.tv_nsec
))
666 compiled_is_newer
= 1;
669 compiled_is_newer
= 0;
670 scm_puts_unlocked (";;; note: source file ", scm_current_error_port ());
671 scm_display (full_filename
, scm_current_error_port ());
672 scm_puts_unlocked ("\n;;; newer than compiled ", scm_current_error_port ());
673 scm_display (compiled_filename
, scm_current_error_port ());
674 scm_puts_unlocked ("\n", scm_current_error_port ());
677 return compiled_is_newer
;
680 SCM_KEYWORD (kw_env
, "env");
681 SCM_KEYWORD (kw_opts
, "opts");
683 SCM_SYMBOL (sym_compile_file
, "compile-file");
684 SCM_SYMBOL (sym_auto_compilation_options
, "%auto-compilation-options");
687 do_try_auto_compile (void *data
)
689 SCM source
= SCM_PACK_POINTER (data
);
690 SCM comp_mod
, compile_file
;
692 scm_puts_unlocked (";;; compiling ", scm_current_error_port ());
693 scm_display (source
, scm_current_error_port ());
694 scm_newline (scm_current_error_port ());
696 comp_mod
= scm_c_resolve_module ("system base compile");
697 compile_file
= scm_module_variable (comp_mod
, sym_compile_file
);
699 if (scm_is_true (compile_file
))
701 /* Auto-compile in the context of the current module. */
705 opts
= scm_module_variable (scm_the_root_module (),
706 sym_auto_compilation_options
);
707 if (SCM_VARIABLEP (opts
))
708 opts
= SCM_VARIABLE_REF (opts
);
716 args
[4] = scm_current_module ();
718 /* Assume `*current-warning-prefix*' has an appropriate value. */
719 res
= scm_call_n (scm_variable_ref (compile_file
), args
, 5);
721 scm_puts_unlocked (";;; compiled ", scm_current_error_port ());
722 scm_display (res
, scm_current_error_port ());
723 scm_newline (scm_current_error_port ());
728 scm_puts_unlocked (";;; it seems ", scm_current_error_port ());
729 scm_display (source
, scm_current_error_port ());
730 scm_puts_unlocked ("\n;;; is part of the compiler; skipping auto-compilation\n",
731 scm_current_error_port ());
737 auto_compile_catch_handler (void *data
, SCM tag
, SCM throw_args
)
739 SCM source
= SCM_PACK_POINTER (data
);
742 oport
= scm_open_output_string ();
743 scm_print_exception (oport
, SCM_BOOL_F
, tag
, throw_args
);
745 scm_puts_unlocked (";;; WARNING: compilation of ", scm_current_warning_port ());
746 scm_display (source
, scm_current_warning_port ());
747 scm_puts_unlocked (" failed:\n", scm_current_warning_port ());
749 lines
= scm_string_split (scm_get_output_string (oport
),
750 SCM_MAKE_CHAR ('\n'));
751 for (; scm_is_pair (lines
); lines
= scm_cdr (lines
))
752 if (scm_c_string_length (scm_car (lines
)))
754 scm_puts_unlocked (";;; ", scm_current_warning_port ());
755 scm_display (scm_car (lines
), scm_current_warning_port ());
756 scm_newline (scm_current_warning_port ());
759 scm_close_port (oport
);
764 SCM_DEFINE (scm_sys_warn_auto_compilation_enabled
, "%warn-auto-compilation-enabled", 0, 0, 0,
766 #define FUNC_NAME s_scm_sys_warn_auto_compilation_enabled
768 static int message_shown
= 0;
772 scm_puts_unlocked (";;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0\n"
773 ";;; or pass the --no-auto-compile argument to disable.\n",
774 scm_current_warning_port ());
778 return SCM_UNSPECIFIED
;
783 scm_try_auto_compile (SCM source
)
785 if (scm_is_false (*scm_loc_load_should_auto_compile
))
788 scm_sys_warn_auto_compilation_enabled ();
789 return scm_c_catch (SCM_BOOL_T
,
791 SCM_UNPACK_POINTER (source
),
792 auto_compile_catch_handler
,
793 SCM_UNPACK_POINTER (source
),
797 /* See also (system base compile):compiled-file-name. */
799 canonical_suffix (SCM fname
)
804 canon
= scm_canonicalize_path (fname
);
805 len
= scm_c_string_length (canon
);
807 if (len
> 1 && scm_is_eq (scm_c_string_ref (canon
, 0), SCM_MAKE_CHAR ('/')))
809 else if (len
> 2 && scm_is_eq (scm_c_string_ref (canon
, 1), SCM_MAKE_CHAR (':')))
810 return scm_string_append (scm_list_3 (scm_from_latin1_string ("/"),
811 scm_c_substring (canon
, 0, 1),
812 scm_c_substring (canon
, 2, len
)));
817 SCM_DEFINE (scm_primitive_load_path
, "primitive-load-path", 0, 0, 1,
819 "Search @var{%load-path} for the file named @var{filename} and\n"
820 "load it into the top-level environment. If @var{filename} is a\n"
821 "relative pathname and is not found in the list of search paths,\n"
822 "an error is signalled, unless the optional argument\n"
823 "@var{exception_on_not_found} is @code{#f}, in which case\n"
824 "@code{#f} is returned instead.")
825 #define FUNC_NAME s_scm_primitive_load_path
827 SCM filename
, exception_on_not_found
;
828 SCM full_filename
, compiled_filename
;
829 int compiled_is_fallback
= 0;
830 SCM hook
= *scm_loc_load_hook
;
831 struct stat stat_source
, stat_compiled
;
833 if (scm_is_true (hook
) && scm_is_false (scm_procedure_p (hook
)))
834 SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f",
837 if (scm_is_string (args
))
839 /* C code written for 1.8 and earlier expects this function to take a
840 single argument (the file name). */
842 exception_on_not_found
= SCM_UNDEFINED
;
846 /* Starting from 1.9, this function takes 1 required and 1 optional
850 SCM_VALIDATE_LIST_COPYLEN (SCM_ARG1
, args
, len
);
851 if (len
< 1 || len
> 2)
852 scm_error_num_args_subr (FUNC_NAME
);
854 filename
= SCM_CAR (args
);
855 SCM_VALIDATE_STRING (SCM_ARG1
, filename
);
857 exception_on_not_found
= len
> 1 ? SCM_CADR (args
) : SCM_UNDEFINED
;
860 if (SCM_UNBNDP (exception_on_not_found
))
861 exception_on_not_found
= SCM_BOOL_T
;
863 full_filename
= search_path (*scm_loc_load_path
, filename
,
864 *scm_loc_load_extensions
, SCM_BOOL_F
,
868 search_path (*scm_loc_load_compiled_path
, filename
,
869 *scm_loc_load_compiled_extensions
, SCM_BOOL_T
,
872 if (scm_is_false (compiled_filename
)
873 && scm_is_true (full_filename
)
874 && scm_is_true (*scm_loc_compile_fallback_path
)
875 && scm_is_false (*scm_loc_fresh_auto_compile
)
876 && scm_is_pair (*scm_loc_load_compiled_extensions
)
877 && scm_is_string (scm_car (*scm_loc_load_compiled_extensions
)))
880 char *fallback_chars
;
882 fallback
= scm_string_append
883 (scm_list_3 (*scm_loc_compile_fallback_path
,
884 canonical_suffix (full_filename
),
885 scm_car (*scm_loc_load_compiled_extensions
)));
887 fallback_chars
= scm_to_locale_string (fallback
);
888 if (stat (fallback_chars
, &stat_compiled
) == 0)
890 compiled_filename
= fallback
;
891 compiled_is_fallback
= 1;
893 free (fallback_chars
);
896 if (scm_is_false (full_filename
) && scm_is_false (compiled_filename
))
898 if (scm_is_true (exception_on_not_found
))
899 SCM_MISC_ERROR ("Unable to find file ~S in load path",
900 scm_list_1 (filename
));
905 if (!scm_is_false (hook
))
906 scm_call_1 (hook
, (scm_is_true (full_filename
)
907 ? full_filename
: compiled_filename
));
909 if (scm_is_false (full_filename
)
910 || (scm_is_true (compiled_filename
)
911 && compiled_is_fresh (full_filename
, compiled_filename
,
912 &stat_source
, &stat_compiled
)))
913 return scm_load_compiled_with_vm (compiled_filename
);
915 /* Perhaps there was the installed .go that was stale, but our fallback is
916 fresh. Let's try that. Duplicating code, but perhaps that's OK. */
918 if (!compiled_is_fallback
919 && scm_is_true (*scm_loc_compile_fallback_path
)
920 && scm_is_false (*scm_loc_fresh_auto_compile
)
921 && scm_is_pair (*scm_loc_load_compiled_extensions
)
922 && scm_is_string (scm_car (*scm_loc_load_compiled_extensions
)))
925 char *fallback_chars
;
928 fallback
= scm_string_append
929 (scm_list_3 (*scm_loc_compile_fallback_path
,
930 canonical_suffix (full_filename
),
931 scm_car (*scm_loc_load_compiled_extensions
)));
933 fallback_chars
= scm_to_locale_string (fallback
);
934 stat_ret
= stat (fallback_chars
, &stat_compiled
);
935 free (fallback_chars
);
937 if (stat_ret
== 0 && compiled_is_fresh (full_filename
, fallback
,
938 &stat_source
, &stat_compiled
))
940 scm_puts_unlocked (";;; found fresh local cache at ", scm_current_warning_port ());
941 scm_display (fallback
, scm_current_warning_port ());
942 scm_newline (scm_current_warning_port ());
943 return scm_load_compiled_with_vm (fallback
);
947 /* Otherwise, we bottom out here. */
949 SCM freshly_compiled
= scm_try_auto_compile (full_filename
);
951 if (scm_is_true (freshly_compiled
))
952 return scm_load_compiled_with_vm (freshly_compiled
);
954 return scm_primitive_load (full_filename
);
960 scm_c_primitive_load_path (const char *filename
)
962 return scm_primitive_load_path (scm_from_locale_string (filename
));
966 scm_init_eval_in_scheme (void)
968 SCM eval_scm
, eval_go
;
969 struct stat stat_source
, stat_compiled
;
971 eval_scm
= search_path (*scm_loc_load_path
,
972 scm_from_locale_string ("ice-9/eval.scm"),
973 SCM_EOL
, SCM_BOOL_F
, &stat_source
);
974 eval_go
= search_path (*scm_loc_load_compiled_path
,
975 scm_from_locale_string ("ice-9/eval.go"),
976 SCM_EOL
, SCM_BOOL_F
, &stat_compiled
);
978 if (scm_is_true (eval_scm
) && scm_is_true (eval_go
)
979 && compiled_is_fresh (eval_scm
, eval_go
,
980 &stat_source
, &stat_compiled
))
981 scm_load_compiled_with_vm (eval_go
);
983 /* if we have no eval.go, we shouldn't load any compiled code at all */
984 *scm_loc_load_compiled_path
= SCM_EOL
;
988 /* Information about the build environment. */
990 SCM_VARIABLE_INIT (sys_host_type
, "%host-type",
991 scm_from_locale_string (HOST_TYPE
));
994 /* Initialize the scheme variable %guile-build-info, based on data
995 provided by the Makefile, via libpath.h. */
999 static struct { char *name
; char *value
; } info
[] = SCM_BUILD_INFO
;
1000 SCM
*loc
= SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL
));
1003 for (i
= 0; i
< (sizeof (info
) / sizeof (info
[0])); i
++)
1005 SCM key
= scm_from_utf8_symbol (info
[i
].name
);
1006 SCM val
= scm_from_locale_string (info
[i
].value
);
1007 *loc
= scm_acons (key
, val
, *loc
);
1009 #ifdef PACKAGE_PACKAGER
1010 *loc
= scm_acons (scm_from_latin1_symbol ("packager"),
1011 scm_from_latin1_string (PACKAGE_PACKAGER
),
1014 #ifdef PACKAGE_PACKAGER_VERSION
1015 *loc
= scm_acons (scm_from_latin1_symbol ("packager-version"),
1016 scm_from_latin1_string (PACKAGE_PACKAGER_VERSION
),
1019 #ifdef PACKAGE_PACKAGER_BUG_REPORTS
1020 *loc
= scm_acons (scm_from_latin1_symbol ("packager-bug-reports"),
1021 scm_from_latin1_string (PACKAGE_PACKAGER_BUG_REPORTS
),
1030 scm_listofnullstr
= scm_list_1 (scm_nullstr
);
1031 scm_loc_load_path
= SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL
));
1032 scm_loc_load_extensions
1033 = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions",
1034 scm_list_2 (scm_from_locale_string (".scm"),
1036 scm_loc_load_compiled_path
1037 = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL
));
1038 scm_loc_load_compiled_extensions
1039 = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions",
1040 scm_list_1 (scm_from_locale_string (".go"))));
1041 scm_loc_load_hook
= SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F
));
1043 scm_loc_compile_fallback_path
1044 = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F
));
1045 scm_loc_load_should_auto_compile
1046 = SCM_VARIABLE_LOC (scm_c_define ("%load-should-auto-compile", SCM_BOOL_F
));
1047 scm_loc_fresh_auto_compile
1048 = SCM_VARIABLE_LOC (scm_c_define ("%fresh-auto-compile", SCM_BOOL_F
));
1050 the_reader
= scm_make_fluid_with_default (SCM_BOOL_F
);
1051 scm_c_define("current-reader", the_reader
);
1053 scm_c_define ("load-compiled",
1054 scm_c_make_gsubr ("load-compiled/vm", 1, 0, 0,
1055 scm_load_compiled_with_vm
));
1059 #include "libguile/load.x"
1063 scm_init_load_should_auto_compile ()
1065 char *auto_compile
= getenv ("GUILE_AUTO_COMPILE");
1067 if (auto_compile
&& strcmp (auto_compile
, "0") == 0)
1069 *scm_loc_load_should_auto_compile
= SCM_BOOL_F
;
1070 *scm_loc_fresh_auto_compile
= SCM_BOOL_F
;
1072 /* Allow "freshen" also. */
1073 else if (auto_compile
&& strncmp (auto_compile
, "fresh", 5) == 0)
1075 *scm_loc_load_should_auto_compile
= SCM_BOOL_T
;
1076 *scm_loc_fresh_auto_compile
= SCM_BOOL_T
;
1080 *scm_loc_load_should_auto_compile
= SCM_BOOL_T
;
1081 *scm_loc_fresh_auto_compile
= SCM_BOOL_F
;