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 /* Ellipsis: "..." */
225 static SCM scm_ellipsis
;
227 SCM_DEFINE (scm_parse_path
, "parse-path", 1, 1, 0,
228 (SCM path
, SCM tail
),
229 "Parse @var{path}, which is expected to be a colon-separated\n"
230 "string, into a list and return the resulting list with\n"
231 "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n"
233 #define FUNC_NAME s_scm_parse_path
236 SCM sep
= SCM_MAKE_CHAR (';');
238 SCM sep
= SCM_MAKE_CHAR (':');
241 if (SCM_UNBNDP (tail
))
243 return (scm_is_false (path
)
245 : scm_append_x (scm_list_2 (scm_string_split (path
, sep
), tail
)));
249 SCM_DEFINE (scm_parse_path_with_ellipsis
, "parse-path-with-ellipsis", 2, 0, 0,
250 (SCM path
, SCM base
),
251 "Parse @var{path}, which is expected to be a colon-separated\n"
252 "string, into a list and return the resulting list with\n"
253 "@var{base} (a list) spliced in place of the @code{...} path\n"
254 "component, if present, or else @var{base} is added to the end.\n"
255 "If @var{path} is @code{#f}, @var{base} is returned.")
256 #define FUNC_NAME s_scm_parse_path_with_ellipsis
258 SCM lst
= scm_parse_path (path
, SCM_EOL
);
262 while (!scm_is_null (walk
) &&
263 scm_is_false (scm_equal_p (scm_car (walk
), scm_ellipsis
)))
265 prev
= SCM_CDRLOC (walk
);
268 *prev
= scm_is_null (walk
)
270 : scm_append (scm_list_2 (base
, scm_cdr (walk
)));
276 /* Initialize the global variable %load-path, given the value of the
277 SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the
278 GUILE_LOAD_PATH environment variable. */
280 scm_init_load_path ()
286 #ifdef SCM_LIBRARY_DIR
287 env
= getenv ("GUILE_SYSTEM_PATH");
288 if (env
&& strcmp (env
, "") == 0)
289 /* special-case interpret system-path=="" as meaning no system path instead
293 path
= scm_parse_path (scm_from_locale_string (env
), path
);
295 path
= scm_list_4 (scm_from_locale_string (SCM_LIBRARY_DIR
),
296 scm_from_locale_string (SCM_SITE_DIR
),
297 scm_from_locale_string (SCM_GLOBAL_SITE_DIR
),
298 scm_from_locale_string (SCM_PKGDATA_DIR
));
300 env
= getenv ("GUILE_SYSTEM_COMPILED_PATH");
301 if (env
&& strcmp (env
, "") == 0)
305 cpath
= scm_parse_path (scm_from_locale_string (env
), cpath
);
308 cpath
= scm_list_2 (scm_from_locale_string (SCM_CCACHE_DIR
),
309 scm_from_locale_string (SCM_SITE_CCACHE_DIR
));
312 #endif /* SCM_LIBRARY_DIR */
321 #define FALLBACK_DIR \
322 "guile/ccache/" SCM_EFFECTIVE_VERSION "-" SCM_OBJCODE_MACHINE_VERSION_STRING
324 if ((e
= getenv ("XDG_CACHE_HOME")))
325 snprintf (cachedir
, sizeof(cachedir
), "%s/" FALLBACK_DIR
, e
);
326 else if ((e
= getenv ("HOME")))
327 snprintf (cachedir
, sizeof(cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
329 else if ((pwd
= getpwuid (getuid ())) && pwd
->pw_dir
)
330 snprintf (cachedir
, sizeof(cachedir
), "%s/.cache/" FALLBACK_DIR
,
332 #endif /* HAVE_GETPWENT */
334 else if ((e
= getenv ("LOCALAPPDATA")))
335 snprintf (cachedir
, sizeof (cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
336 else if ((e
= getenv ("APPDATA")))
337 snprintf (cachedir
, sizeof (cachedir
), "%s/.cache/" FALLBACK_DIR
, e
);
338 #endif /* __MINGW32__ */
343 *scm_loc_compile_fallback_path
= scm_from_locale_string (cachedir
);
346 env
= getenv ("GUILE_LOAD_PATH");
348 path
= scm_parse_path_with_ellipsis (scm_from_locale_string (env
), path
);
350 env
= getenv ("GUILE_LOAD_COMPILED_PATH");
352 cpath
= scm_parse_path_with_ellipsis (scm_from_locale_string (env
), cpath
);
354 *scm_loc_load_path
= path
;
355 *scm_loc_load_compiled_path
= cpath
;
358 SCM scm_listofnullstr
;
360 /* Utility functions for assembling C strings in a buffer.
369 stringbuf_free (void *data
)
371 struct stringbuf
*buf
= (struct stringbuf
*)data
;
376 stringbuf_grow (struct stringbuf
*buf
)
378 size_t ptroff
= buf
->ptr
- buf
->buf
;
380 buf
->buf
= scm_realloc (buf
->buf
, buf
->buf_len
);
381 buf
->ptr
= buf
->buf
+ ptroff
;
385 stringbuf_cat_locale_string (struct stringbuf
*buf
, SCM str
)
387 size_t max_len
= buf
->buf_len
- (buf
->ptr
- buf
->buf
) - 1;
388 size_t len
= scm_to_locale_stringbuf (str
, buf
->ptr
, max_len
);
391 /* buffer is too small, double its size and try again.
393 stringbuf_grow (buf
);
394 stringbuf_cat_locale_string (buf
, str
);
398 /* string fits, terminate it and check for embedded '\0'.
400 buf
->ptr
[len
] = '\0';
401 if (strlen (buf
->ptr
) != len
)
402 scm_misc_error (NULL
,
403 "string contains #\\nul character: ~S",
410 stringbuf_cat (struct stringbuf
*buf
, char *str
)
412 size_t max_len
= buf
->buf_len
- (buf
->ptr
- buf
->buf
) - 1;
413 size_t len
= strlen (str
);
416 /* buffer is too small, double its size and try again.
418 stringbuf_grow (buf
);
419 stringbuf_cat (buf
, str
);
423 /* string fits, copy it into buffer.
425 strcpy (buf
->ptr
, str
);
432 scm_c_string_has_an_ext (char *str
, size_t len
, SCM extensions
)
434 for (; !scm_is_null (extensions
); extensions
= SCM_CDR (extensions
))
439 ext
= scm_to_locale_string (SCM_CAR (extensions
));
440 extlen
= strlen (ext
);
441 match
= (len
> extlen
&& str
[len
- extlen
- 1] == '.'
442 && strncmp (str
+ (len
- extlen
), ext
, extlen
) == 0);
450 /* Search PATH for a directory containing a file named FILENAME.
451 The file must be readable, and not a directory.
452 If we find one, return its full pathname; otherwise, return #f.
453 If FILENAME is absolute, return it unchanged.
454 We also fill *stat_buf corresponding to the returned pathname.
455 If given, EXTENSIONS is a list of strings; for each directory
456 in PATH, we search for FILENAME concatenated with each EXTENSION. */
458 search_path (SCM path
, SCM filename
, SCM extensions
, SCM require_exts
,
459 struct stat
*stat_buf
)
461 struct stringbuf buf
;
462 char *filename_chars
;
464 SCM result
= SCM_BOOL_F
;
466 if (scm_ilength (path
) < 0)
467 scm_misc_error ("%search-path", "path is not a proper list: ~a",
469 if (scm_ilength (extensions
) < 0)
470 scm_misc_error ("%search-path", "bad extensions list: ~a",
471 scm_list_1 (extensions
));
473 scm_dynwind_begin (0);
475 filename_chars
= scm_to_locale_string (filename
);
476 filename_len
= strlen (filename_chars
);
477 scm_dynwind_free (filename_chars
);
479 /* If FILENAME is absolute and is still valid, return it unchanged. */
481 if (((filename_len
>= 1) &&
482 (filename_chars
[0] == '/' || filename_chars
[0] == '\\')) ||
483 ((filename_len
>= 3) && filename_chars
[1] == ':' &&
484 ((filename_chars
[0] >= 'a' && filename_chars
[0] <= 'z') ||
485 (filename_chars
[0] >= 'A' && filename_chars
[0] <= 'Z')) &&
486 (filename_chars
[2] == '/' || filename_chars
[2] == '\\')))
488 if (filename_len
>= 1 && filename_chars
[0] == '/')
491 if ((scm_is_false (require_exts
) ||
492 scm_c_string_has_an_ext (filename_chars
, filename_len
,
494 && stat (filename_chars
, stat_buf
) == 0
495 && !(stat_buf
->st_mode
& S_IFDIR
))
500 /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */
504 for (endp
= filename_chars
+ filename_len
- 1;
505 endp
>= filename_chars
;
510 if (scm_is_true (require_exts
) &&
511 !scm_c_string_has_an_ext (filename_chars
, filename_len
,
514 /* This filename has an extension, but not one of the right
518 /* This filename already has an extension, so cancel the
519 list of extensions. */
520 extensions
= SCM_EOL
;
524 else if (*endp
== '/' || *endp
== '\\')
526 else if (*endp
== '/')
528 /* This filename has no extension, so keep the current list
534 /* This simplifies the loop below a bit.
536 if (scm_is_null (extensions
))
537 extensions
= scm_listofnullstr
;
540 buf
.buf
= scm_malloc (buf
.buf_len
);
541 scm_dynwind_unwind_handler (stringbuf_free
, &buf
, SCM_F_WIND_EXPLICITLY
);
543 /* Try every path element.
545 for (; scm_is_pair (path
); path
= SCM_CDR (path
))
547 SCM dir
= SCM_CAR (path
);
552 stringbuf_cat_locale_string (&buf
, dir
);
554 /* Concatenate the path name and the filename. */
557 if ((buf
.ptr
> buf
.buf
) && (buf
.ptr
[-1] != '/') && (buf
.ptr
[-1] != '\\'))
559 if ((buf
.ptr
> buf
.buf
) && (buf
.ptr
[-1] != '/'))
561 stringbuf_cat (&buf
, "/");
563 stringbuf_cat (&buf
, filename_chars
);
564 sans_ext_len
= buf
.ptr
- buf
.buf
;
566 /* Try every extension. */
567 for (exts
= extensions
; scm_is_pair (exts
); exts
= SCM_CDR (exts
))
569 SCM ext
= SCM_CAR (exts
);
571 buf
.ptr
= buf
.buf
+ sans_ext_len
;
572 stringbuf_cat_locale_string (&buf
, ext
);
574 /* If the file exists at all, we should return it. If the
575 file is inaccessible, then that's an error. */
577 if (stat (buf
.buf
, stat_buf
) == 0
578 && ! (stat_buf
->st_mode
& S_IFDIR
))
580 result
= scm_from_locale_string (buf
.buf
);
585 if (!SCM_NULL_OR_NIL_P (exts
))
586 scm_wrong_type_arg_msg (NULL
, 0, extensions
, "proper list");
589 if (!SCM_NULL_OR_NIL_P (path
))
590 scm_wrong_type_arg_msg (NULL
, 0, path
, "proper list");
597 SCM_DEFINE (scm_search_path
, "search-path", 2, 0, 1,
598 (SCM path
, SCM filename
, SCM rest
),
599 "Search @var{path} for a directory containing a file named\n"
600 "@var{filename}. The file must be readable, and not a directory.\n"
601 "If we find one, return its full filename; otherwise, return\n"
602 "@code{#f}. If @var{filename} is absolute, return it unchanged.\n"
603 "If given, @var{rest} is a list of extension strings; for each\n"
604 "directory in @var{path}, we search for @var{filename}\n"
605 "concatenated with each extension.")
606 #define FUNC_NAME s_scm_search_path
608 SCM extensions
, require_exts
;
609 struct stat stat_buf
;
611 if (SCM_UNBNDP (rest
) || scm_is_null (rest
))
613 /* Called either by Scheme code that didn't provide the optional
614 arguments, or C code that used the Guile 1.8 signature (2 required,
615 1 optional arg) and passed '() or nothing as the EXTENSIONS
617 extensions
= SCM_EOL
;
618 require_exts
= SCM_UNDEFINED
;
622 if (scm_is_null (SCM_CAR (rest
)) || scm_is_pair (SCM_CAR (rest
)))
624 /* Called by Scheme code written for 1.9. */
625 extensions
= SCM_CAR (rest
);
626 if (scm_is_null (SCM_CDR (rest
)))
627 require_exts
= SCM_UNDEFINED
;
630 require_exts
= SCM_CADR (rest
);
631 if (SCM_UNLIKELY (!scm_is_null (SCM_CDDR (rest
))))
632 scm_wrong_num_args (scm_from_locale_string (FUNC_NAME
));
637 /* Called by C code that uses the 1.8 signature, i.e., which
638 expects the 3rd argument to be EXTENSIONS. */
640 require_exts
= SCM_UNDEFINED
;
644 if (SCM_UNBNDP (extensions
))
645 extensions
= SCM_EOL
;
647 if (SCM_UNBNDP (require_exts
))
648 require_exts
= SCM_BOOL_F
;
650 return search_path (path
, filename
, extensions
, require_exts
, &stat_buf
);
655 /* Search %load-path for a directory containing a file named FILENAME.
656 The file must be readable, and not a directory.
657 If we find one, return its full filename; otherwise, return #f.
658 If FILENAME is absolute, return it unchanged. */
659 SCM_DEFINE (scm_sys_search_load_path
, "%search-load-path", 1, 0, 0,
661 "Search @var{%load-path} for the file named @var{filename},\n"
662 "which must be readable by the current user. If @var{filename}\n"
663 "is found in the list of paths to search or is an absolute\n"
664 "pathname, return its full pathname. Otherwise, return\n"
665 "@code{#f}. Filenames may have any of the optional extensions\n"
666 "in the @code{%load-extensions} list; @code{%search-load-path}\n"
667 "will try each extension automatically.")
668 #define FUNC_NAME s_scm_sys_search_load_path
670 struct stat stat_buf
;
672 SCM_VALIDATE_STRING (1, filename
);
674 return search_path (*scm_loc_load_path
, filename
, *scm_loc_load_extensions
,
675 SCM_BOOL_F
, &stat_buf
);
680 /* Return true if COMPILED_FILENAME is newer than source file
681 FULL_FILENAME, false otherwise. */
683 compiled_is_fresh (SCM full_filename
, SCM compiled_filename
,
684 struct stat
*stat_source
, struct stat
*stat_compiled
)
686 int compiled_is_newer
;
687 struct timespec source_mtime
, compiled_mtime
;
689 source_mtime
= get_stat_mtime (stat_source
);
690 compiled_mtime
= get_stat_mtime (stat_compiled
);
692 if (source_mtime
.tv_sec
< compiled_mtime
.tv_sec
693 || (source_mtime
.tv_sec
== compiled_mtime
.tv_sec
694 && source_mtime
.tv_nsec
<= compiled_mtime
.tv_nsec
))
695 compiled_is_newer
= 1;
698 compiled_is_newer
= 0;
699 scm_puts (";;; note: source file ", scm_current_error_port ());
700 scm_display (full_filename
, scm_current_error_port ());
701 scm_puts ("\n;;; newer than compiled ", scm_current_error_port ());
702 scm_display (compiled_filename
, scm_current_error_port ());
703 scm_puts ("\n", scm_current_error_port ());
706 return compiled_is_newer
;
709 SCM_KEYWORD (kw_env
, "env");
710 SCM_KEYWORD (kw_opts
, "opts");
712 SCM_SYMBOL (sym_compile_file
, "compile-file");
713 SCM_SYMBOL (sym_auto_compilation_options
, "%auto-compilation-options");
716 do_try_auto_compile (void *data
)
718 SCM source
= PTR2SCM (data
);
719 SCM comp_mod
, compile_file
;
721 scm_puts (";;; compiling ", scm_current_error_port ());
722 scm_display (source
, scm_current_error_port ());
723 scm_newline (scm_current_error_port ());
725 comp_mod
= scm_c_resolve_module ("system base compile");
726 compile_file
= scm_module_variable (comp_mod
, sym_compile_file
);
728 if (scm_is_true (compile_file
))
730 /* Auto-compile in the context of the current module. */
734 opts
= scm_module_variable (scm_the_root_module (),
735 sym_auto_compilation_options
);
736 if (SCM_VARIABLEP (opts
))
737 opts
= SCM_VARIABLE_REF (opts
);
745 args
[4] = scm_current_module ();
747 /* Assume `*current-warning-prefix*' has an appropriate value. */
748 res
= scm_call_n (scm_variable_ref (compile_file
), args
, 5);
750 scm_puts (";;; compiled ", scm_current_error_port ());
751 scm_display (res
, scm_current_error_port ());
752 scm_newline (scm_current_error_port ());
757 scm_puts (";;; it seems ", scm_current_error_port ());
758 scm_display (source
, scm_current_error_port ());
759 scm_puts ("\n;;; is part of the compiler; skipping auto-compilation\n",
760 scm_current_error_port ());
766 auto_compile_catch_handler (void *data
, SCM tag
, SCM throw_args
)
768 SCM source
= PTR2SCM (data
);
771 oport
= scm_open_output_string ();
772 scm_print_exception (oport
, SCM_BOOL_F
, tag
, throw_args
);
774 scm_puts (";;; WARNING: compilation of ", scm_current_warning_port ());
775 scm_display (source
, scm_current_warning_port ());
776 scm_puts (" failed:\n", scm_current_warning_port ());
778 lines
= scm_string_split (scm_get_output_string (oport
),
779 SCM_MAKE_CHAR ('\n'));
780 for (; scm_is_pair (lines
); lines
= scm_cdr (lines
))
781 if (scm_c_string_length (scm_car (lines
)))
783 scm_puts (";;; ", scm_current_warning_port ());
784 scm_display (scm_car (lines
), scm_current_warning_port ());
785 scm_newline (scm_current_warning_port ());
788 scm_close_port (oport
);
793 SCM_DEFINE (scm_sys_warn_auto_compilation_enabled
, "%warn-auto-compilation-enabled", 0, 0, 0,
795 #define FUNC_NAME s_scm_sys_warn_auto_compilation_enabled
797 static int message_shown
= 0;
801 scm_puts (";;; note: auto-compilation is enabled, set GUILE_AUTO_COMPILE=0\n"
802 ";;; or pass the --no-auto-compile argument to disable.\n",
803 scm_current_warning_port ());
807 return SCM_UNSPECIFIED
;
812 scm_try_auto_compile (SCM source
)
814 if (scm_is_false (*scm_loc_load_should_auto_compile
))
817 scm_sys_warn_auto_compilation_enabled ();
818 return scm_c_catch (SCM_BOOL_T
,
821 auto_compile_catch_handler
,
826 /* See also (system base compile):compiled-file-name. */
828 canonical_suffix (SCM fname
)
833 canon
= scm_canonicalize_path (fname
);
834 len
= scm_c_string_length (canon
);
836 if (len
> 1 && scm_is_eq (scm_c_string_ref (canon
, 0), SCM_MAKE_CHAR ('/')))
838 else if (len
> 2 && scm_is_eq (scm_c_string_ref (canon
, 1), SCM_MAKE_CHAR (':')))
839 return scm_string_append (scm_list_3 (scm_from_latin1_string ("/"),
840 scm_c_substring (canon
, 0, 1),
841 scm_c_substring (canon
, 2, len
)));
846 SCM_DEFINE (scm_primitive_load_path
, "primitive-load-path", 0, 0, 1,
848 "Search @var{%load-path} for the file named @var{filename} and\n"
849 "load it into the top-level environment. If @var{filename} is a\n"
850 "relative pathname and is not found in the list of search paths,\n"
851 "an error is signalled, unless the optional argument\n"
852 "@var{exception_on_not_found} is @code{#f}, in which case\n"
853 "@code{#f} is returned instead.")
854 #define FUNC_NAME s_scm_primitive_load_path
856 SCM filename
, exception_on_not_found
;
857 SCM full_filename
, compiled_filename
;
858 int compiled_is_fallback
= 0;
859 SCM hook
= *scm_loc_load_hook
;
860 struct stat stat_source
, stat_compiled
;
862 if (scm_is_true (hook
) && scm_is_false (scm_procedure_p (hook
)))
863 SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f",
866 if (scm_is_string (args
))
868 /* C code written for 1.8 and earlier expects this function to take a
869 single argument (the file name). */
871 exception_on_not_found
= SCM_UNDEFINED
;
875 /* Starting from 1.9, this function takes 1 required and 1 optional
879 SCM_VALIDATE_LIST_COPYLEN (SCM_ARG1
, args
, len
);
880 if (len
< 1 || len
> 2)
881 scm_error_num_args_subr (FUNC_NAME
);
883 filename
= SCM_CAR (args
);
884 SCM_VALIDATE_STRING (SCM_ARG1
, filename
);
886 exception_on_not_found
= len
> 1 ? SCM_CADR (args
) : SCM_UNDEFINED
;
889 if (SCM_UNBNDP (exception_on_not_found
))
890 exception_on_not_found
= SCM_BOOL_T
;
892 full_filename
= search_path (*scm_loc_load_path
, filename
,
893 *scm_loc_load_extensions
, SCM_BOOL_F
,
897 search_path (*scm_loc_load_compiled_path
, filename
,
898 *scm_loc_load_compiled_extensions
, SCM_BOOL_T
,
901 if (scm_is_false (compiled_filename
)
902 && scm_is_true (full_filename
)
903 && scm_is_true (*scm_loc_compile_fallback_path
)
904 && scm_is_false (*scm_loc_fresh_auto_compile
)
905 && scm_is_pair (*scm_loc_load_compiled_extensions
)
906 && scm_is_string (scm_car (*scm_loc_load_compiled_extensions
)))
909 char *fallback_chars
;
911 fallback
= scm_string_append
912 (scm_list_3 (*scm_loc_compile_fallback_path
,
913 canonical_suffix (full_filename
),
914 scm_car (*scm_loc_load_compiled_extensions
)));
916 fallback_chars
= scm_to_locale_string (fallback
);
917 if (stat (fallback_chars
, &stat_compiled
) == 0)
919 compiled_filename
= fallback
;
920 compiled_is_fallback
= 1;
922 free (fallback_chars
);
925 if (scm_is_false (full_filename
) && scm_is_false (compiled_filename
))
927 if (scm_is_true (exception_on_not_found
))
928 SCM_MISC_ERROR ("Unable to find file ~S in load path",
929 scm_list_1 (filename
));
934 if (!scm_is_false (hook
))
935 scm_call_1 (hook
, (scm_is_true (full_filename
)
936 ? full_filename
: compiled_filename
));
938 if (scm_is_false (full_filename
)
939 || (scm_is_true (compiled_filename
)
940 && compiled_is_fresh (full_filename
, compiled_filename
,
941 &stat_source
, &stat_compiled
)))
942 return scm_load_compiled_with_vm (compiled_filename
);
944 /* Perhaps there was the installed .go that was stale, but our fallback is
945 fresh. Let's try that. Duplicating code, but perhaps that's OK. */
947 if (!compiled_is_fallback
948 && scm_is_true (*scm_loc_compile_fallback_path
)
949 && scm_is_false (*scm_loc_fresh_auto_compile
)
950 && scm_is_pair (*scm_loc_load_compiled_extensions
)
951 && scm_is_string (scm_car (*scm_loc_load_compiled_extensions
)))
954 char *fallback_chars
;
957 fallback
= scm_string_append
958 (scm_list_3 (*scm_loc_compile_fallback_path
,
959 canonical_suffix (full_filename
),
960 scm_car (*scm_loc_load_compiled_extensions
)));
962 fallback_chars
= scm_to_locale_string (fallback
);
963 stat_ret
= stat (fallback_chars
, &stat_compiled
);
964 free (fallback_chars
);
966 if (stat_ret
== 0 && compiled_is_fresh (full_filename
, fallback
,
967 &stat_source
, &stat_compiled
))
969 scm_puts (";;; found fresh local cache at ", scm_current_warning_port ());
970 scm_display (fallback
, scm_current_warning_port ());
971 scm_newline (scm_current_warning_port ());
972 return scm_load_compiled_with_vm (fallback
);
976 /* Otherwise, we bottom out here. */
978 SCM freshly_compiled
= scm_try_auto_compile (full_filename
);
980 if (scm_is_true (freshly_compiled
))
981 return scm_load_compiled_with_vm (freshly_compiled
);
983 return scm_primitive_load (full_filename
);
989 scm_c_primitive_load_path (const char *filename
)
991 return scm_primitive_load_path (scm_from_locale_string (filename
));
995 scm_init_eval_in_scheme (void)
997 SCM eval_scm
, eval_go
;
998 struct stat stat_source
, stat_compiled
;
1000 eval_scm
= search_path (*scm_loc_load_path
,
1001 scm_from_locale_string ("ice-9/eval.scm"),
1002 SCM_EOL
, SCM_BOOL_F
, &stat_source
);
1003 eval_go
= search_path (*scm_loc_load_compiled_path
,
1004 scm_from_locale_string ("ice-9/eval.go"),
1005 SCM_EOL
, SCM_BOOL_F
, &stat_compiled
);
1007 if (scm_is_true (eval_scm
) && scm_is_true (eval_go
)
1008 && compiled_is_fresh (eval_scm
, eval_go
,
1009 &stat_source
, &stat_compiled
))
1010 scm_load_compiled_with_vm (eval_go
);
1012 /* if we have no eval.go, we shouldn't load any compiled code at all */
1013 *scm_loc_load_compiled_path
= SCM_EOL
;
1017 /* Information about the build environment. */
1019 SCM_VARIABLE_INIT (sys_host_type
, "%host-type",
1020 scm_from_locale_string (HOST_TYPE
));
1023 /* Initialize the scheme variable %guile-build-info, based on data
1024 provided by the Makefile, via libpath.h. */
1028 static struct { char *name
; char *value
; } info
[] = SCM_BUILD_INFO
;
1029 SCM
*loc
= SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL
));
1032 for (i
= 0; i
< (sizeof (info
) / sizeof (info
[0])); i
++)
1034 SCM key
= scm_from_locale_symbol (info
[i
].name
);
1035 SCM val
= scm_from_locale_string (info
[i
].value
);
1036 *loc
= scm_acons (key
, val
, *loc
);
1038 #ifdef PACKAGE_PACKAGER
1039 *loc
= scm_acons (scm_from_latin1_symbol ("packager"),
1040 scm_from_latin1_string (PACKAGE_PACKAGER
),
1043 #ifdef PACKAGE_PACKAGER_VERSION
1044 *loc
= scm_acons (scm_from_latin1_symbol ("packager-version"),
1045 scm_from_latin1_string (PACKAGE_PACKAGER_VERSION
),
1048 #ifdef PACKAGE_PACKAGER_BUG_REPORTS
1049 *loc
= scm_acons (scm_from_latin1_symbol ("packager-bug-reports"),
1050 scm_from_latin1_string (PACKAGE_PACKAGER_BUG_REPORTS
),
1059 scm_listofnullstr
= scm_list_1 (scm_nullstr
);
1060 scm_loc_load_path
= SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL
));
1061 scm_loc_load_extensions
1062 = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions",
1063 scm_list_2 (scm_from_locale_string (".scm"),
1065 scm_loc_load_compiled_path
1066 = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL
));
1067 scm_loc_load_compiled_extensions
1068 = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions",
1069 scm_list_1 (scm_from_locale_string (".go"))));
1070 scm_loc_load_hook
= SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F
));
1072 scm_loc_compile_fallback_path
1073 = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F
));
1074 scm_loc_load_should_auto_compile
1075 = SCM_VARIABLE_LOC (scm_c_define ("%load-should-auto-compile", SCM_BOOL_F
));
1076 scm_loc_fresh_auto_compile
1077 = SCM_VARIABLE_LOC (scm_c_define ("%fresh-auto-compile", SCM_BOOL_F
));
1079 scm_ellipsis
= scm_from_latin1_string ("...");
1081 the_reader
= scm_make_fluid_with_default (SCM_BOOL_F
);
1082 scm_c_define("current-reader", the_reader
);
1084 scm_c_define ("load-compiled",
1085 scm_c_make_gsubr ("load-compiled/vm", 1, 0, 0,
1086 scm_load_compiled_with_vm
));
1090 #include "libguile/load.x"
1094 scm_init_load_should_auto_compile ()
1096 char *auto_compile
= getenv ("GUILE_AUTO_COMPILE");
1098 if (auto_compile
&& strcmp (auto_compile
, "0") == 0)
1100 *scm_loc_load_should_auto_compile
= SCM_BOOL_F
;
1101 *scm_loc_fresh_auto_compile
= SCM_BOOL_F
;
1103 /* Allow "freshen" also. */
1104 else if (auto_compile
&& strncmp (auto_compile
, "fresh", 5) == 0)
1106 *scm_loc_load_should_auto_compile
= SCM_BOOL_T
;
1107 *scm_loc_fresh_auto_compile
= SCM_BOOL_T
;
1111 *scm_loc_load_should_auto_compile
= SCM_BOOL_T
;
1112 *scm_loc_fresh_auto_compile
= SCM_BOOL_F
;