Commit | Line | Data |
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179fe336 | 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2004, 2006, 2009 Free Software Foundation, Inc. |
0f2d19dd | 2 | * |
73be1d9e | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
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. | |
0f2d19dd | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
0f2d19dd | 12 | * |
73be1d9e MV |
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 | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
73be1d9e | 17 | */ |
1bbd0b84 | 18 | |
1bbd0b84 | 19 | |
0f2d19dd JB |
20 | \f |
21 | ||
dbb605f5 | 22 | #ifdef HAVE_CONFIG_H |
cbd41c89 RB |
23 | # include <config.h> |
24 | #endif | |
25 | ||
13070bd3 | 26 | #include <string.h> |
7d04d68b | 27 | #include <stdio.h> |
13070bd3 | 28 | |
a0599745 MD |
29 | #include "libguile/_scm.h" |
30 | #include "libguile/libpath.h" | |
31 | #include "libguile/fports.h" | |
32 | #include "libguile/read.h" | |
33 | #include "libguile/eval.h" | |
34 | #include "libguile/throw.h" | |
35 | #include "libguile/alist.h" | |
36 | #include "libguile/dynwind.h" | |
37 | #include "libguile/root.h" | |
38 | #include "libguile/strings.h" | |
f33b174d | 39 | #include "libguile/modules.h" |
c96d76b8 | 40 | #include "libguile/lang.h" |
7d04d68b | 41 | #include "libguile/chars.h" |
c44ca4fe | 42 | #include "libguile/srfi-13.h" |
a0599745 MD |
43 | |
44 | #include "libguile/validate.h" | |
45 | #include "libguile/load.h" | |
ec3a8ace | 46 | #include "libguile/fluids.h" |
06721500 | 47 | |
22f4ee48 AW |
48 | #include "libguile/vm.h" /* for load-compiled/vm */ |
49 | ||
06721500 JB |
50 | #include <sys/types.h> |
51 | #include <sys/stat.h> | |
52 | ||
53 | #ifdef HAVE_UNISTD_H | |
54 | #include <unistd.h> | |
55 | #endif /* HAVE_UNISTD_H */ | |
56 | ||
5b197db8 AW |
57 | #ifdef HAVE_PWD_H |
58 | #include <pwd.h> | |
59 | #endif /* HAVE_PWD_H */ | |
60 | ||
06721500 JB |
61 | #ifndef R_OK |
62 | #define R_OK 4 | |
63 | #endif | |
0f2d19dd JB |
64 | |
65 | \f | |
06721500 | 66 | /* Loading a file, given an absolute filename. */ |
0f2d19dd | 67 | |
26544b96 JB |
68 | /* Hook to run when we load a file, perhaps to announce the fact somewhere. |
69 | Applied to the full name of the file. */ | |
70 | static SCM *scm_loc_load_hook; | |
71 | ||
ec3a8ace NJ |
72 | /* The current reader (a fluid). */ |
73 | static SCM the_reader = SCM_BOOL_F; | |
74 | static size_t the_reader_fluid_num = 0; | |
75 | ||
3b3b36dd | 76 | SCM_DEFINE (scm_primitive_load, "primitive-load", 1, 0, 0, |
1bbd0b84 | 77 | (SCM filename), |
67e8151b MG |
78 | "Load the file named @var{filename} and evaluate its contents in\n" |
79 | "the top-level environment. The load paths are not searched;\n" | |
80 | "@var{filename} must either be a full pathname or be a pathname\n" | |
81 | "relative to the current directory. If the variable\n" | |
82 | "@code{%load-hook} is defined, it should be bound to a procedure\n" | |
83 | "that will be called before any code is loaded. See the\n" | |
84 | "documentation for @code{%load-hook} later in this section.") | |
1bbd0b84 | 85 | #define FUNC_NAME s_scm_primitive_load |
0f2d19dd | 86 | { |
26544b96 | 87 | SCM hook = *scm_loc_load_hook; |
a6d9e5ab | 88 | SCM_VALIDATE_STRING (1, filename); |
bc36d050 | 89 | if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook))) |
2ade72d7 DH |
90 | SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f", |
91 | SCM_EOL); | |
26544b96 | 92 | |
bc36d050 | 93 | if (!scm_is_false (hook)) |
fdc28395 | 94 | scm_call_1 (hook, filename); |
26544b96 | 95 | |
1bbd0b84 | 96 | { /* scope */ |
b5623573 | 97 | SCM port = scm_open_file (filename, scm_from_locale_string ("r")); |
661ae7ab MV |
98 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); |
99 | scm_i_dynwind_current_load_port (port); | |
b5623573 MV |
100 | |
101 | while (1) | |
102 | { | |
ec3a8ace NJ |
103 | SCM reader, form; |
104 | ||
105 | /* Lookup and use the current reader to read the next | |
106 | expression. */ | |
107 | reader = SCM_FAST_FLUID_REF (the_reader_fluid_num); | |
108 | if (reader == SCM_BOOL_F) | |
109 | form = scm_read (port); | |
110 | else | |
111 | form = scm_call_1 (reader, port); | |
112 | ||
b5623573 MV |
113 | if (SCM_EOF_OBJECT_P (form)) |
114 | break; | |
ec3a8ace | 115 | |
b5623573 MV |
116 | scm_primitive_eval_x (form); |
117 | } | |
118 | ||
661ae7ab | 119 | scm_dynwind_end (); |
0f2d19dd JB |
120 | scm_close_port (port); |
121 | } | |
b59b97ba | 122 | return SCM_UNSPECIFIED; |
0f2d19dd | 123 | } |
1bbd0b84 | 124 | #undef FUNC_NAME |
0f2d19dd | 125 | |
c519b272 MV |
126 | SCM |
127 | scm_c_primitive_load (const char *filename) | |
128 | { | |
cc95e00a | 129 | return scm_primitive_load (scm_from_locale_string (filename)); |
c519b272 MV |
130 | } |
131 | ||
0f2d19dd | 132 | \f |
3feedb00 MD |
133 | /* Builtin path to scheme library files. */ |
134 | #ifdef SCM_PKGDATA_DIR | |
a1ec6916 | 135 | SCM_DEFINE (scm_sys_package_data_dir, "%package-data-dir", 0, 0, 0, |
1bbd0b84 | 136 | (), |
b380b885 MD |
137 | "Return the name of the directory where Scheme packages, modules and\n" |
138 | "libraries are kept. On most Unix systems, this will be\n" | |
139 | "@samp{/usr/local/share/guile}.") | |
1bbd0b84 | 140 | #define FUNC_NAME s_scm_sys_package_data_dir |
3feedb00 | 141 | { |
cc95e00a | 142 | return scm_from_locale_string (SCM_PKGDATA_DIR); |
3feedb00 | 143 | } |
1bbd0b84 | 144 | #undef FUNC_NAME |
3feedb00 MD |
145 | #endif /* SCM_PKGDATA_DIR */ |
146 | ||
e8e9b690 | 147 | #ifdef SCM_LIBRARY_DIR |
a1ec6916 | 148 | SCM_DEFINE (scm_sys_library_dir, "%library-dir", 0,0,0, |
e8e9b690 | 149 | (), |
b380b885 MD |
150 | "Return the directory where the Guile Scheme library files are installed.\n" |
151 | "E.g., may return \"/usr/share/guile/1.3.5\".") | |
e8e9b690 GB |
152 | #define FUNC_NAME s_scm_sys_library_dir |
153 | { | |
cc95e00a | 154 | return scm_from_locale_string (SCM_LIBRARY_DIR); |
e8e9b690 GB |
155 | } |
156 | #undef FUNC_NAME | |
157 | #endif /* SCM_LIBRARY_DIR */ | |
158 | ||
159 | #ifdef SCM_SITE_DIR | |
a1ec6916 | 160 | SCM_DEFINE (scm_sys_site_dir, "%site-dir", 0,0,0, |
e8e9b690 | 161 | (), |
b380b885 MD |
162 | "Return the directory where the Guile site files are installed.\n" |
163 | "E.g., may return \"/usr/share/guile/site\".") | |
e8e9b690 GB |
164 | #define FUNC_NAME s_scm_sys_site_dir |
165 | { | |
cc95e00a | 166 | return scm_from_locale_string (SCM_SITE_DIR); |
e8e9b690 GB |
167 | } |
168 | #undef FUNC_NAME | |
169 | #endif /* SCM_SITE_DIR */ | |
170 | ||
171 | ||
172 | ||
3feedb00 | 173 | \f |
06721500 | 174 | /* Initializing the load path, and searching it. */ |
0f2d19dd | 175 | |
26544b96 | 176 | /* List of names of directories we search for files to load. */ |
06721500 JB |
177 | static SCM *scm_loc_load_path; |
178 | ||
26544b96 JB |
179 | /* List of extensions we try adding to the filenames. */ |
180 | static SCM *scm_loc_load_extensions; | |
181 | ||
5b197db8 AW |
182 | /* Like %load-path and %load-extensions, but for compiled files. */ |
183 | static SCM *scm_loc_load_compiled_path; | |
22f4ee48 AW |
184 | static SCM *scm_loc_load_compiled_extensions; |
185 | ||
ee001750 AW |
186 | /* Whether we should try to auto-compile. */ |
187 | static SCM *scm_loc_load_should_autocompile; | |
01cddfc1 | 188 | |
5ea401bf AW |
189 | /* The fallback path for autocompilation */ |
190 | static SCM *scm_loc_compile_fallback_path; | |
191 | ||
a1ec6916 | 192 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 193 | (SCM path, SCM tail), |
d91788cb MG |
194 | "Parse @var{path}, which is expected to be a colon-separated\n" |
195 | "string, into a list and return the resulting list with\n" | |
196 | "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n" | |
197 | "is returned.") | |
1bbd0b84 | 198 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 199 | { |
7d04d68b MV |
200 | #ifdef __MINGW32__ |
201 | SCM sep = SCM_MAKE_CHAR (';'); | |
202 | #else | |
203 | SCM sep = SCM_MAKE_CHAR (':'); | |
204 | #endif | |
205 | ||
04e8fb0a MD |
206 | if (SCM_UNBNDP (tail)) |
207 | tail = SCM_EOL; | |
7888309b | 208 | return (scm_is_false (path) |
04e8fb0a | 209 | ? tail |
7d04d68b | 210 | : scm_append_x (scm_list_2 (scm_string_split (path, sep), tail))); |
04e8fb0a | 211 | } |
1bbd0b84 | 212 | #undef FUNC_NAME |
04e8fb0a MD |
213 | |
214 | ||
06721500 | 215 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 216 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 217 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 218 | void |
06721500 JB |
219 | scm_init_load_path () |
220 | { | |
11c5e0bf | 221 | char *env; |
06721500 | 222 | SCM path = SCM_EOL; |
5b197db8 | 223 | SCM cpath = SCM_EOL; |
06721500 | 224 | |
3feedb00 | 225 | #ifdef SCM_LIBRARY_DIR |
02b84691 AW |
226 | env = getenv ("GUILE_SYSTEM_PATH"); |
227 | if (env && strcmp (env, "") == 0) | |
228 | /* special-case interpret system-path=="" as meaning no system path instead | |
229 | of '("") */ | |
230 | ; | |
231 | else if (env) | |
232 | path = scm_parse_path (scm_from_locale_string (env), path); | |
233 | else | |
234 | path = scm_list_3 (scm_from_locale_string (SCM_SITE_DIR), | |
235 | scm_from_locale_string (SCM_LIBRARY_DIR), | |
236 | scm_from_locale_string (SCM_PKGDATA_DIR)); | |
5b197db8 AW |
237 | |
238 | env = getenv ("GUILE_SYSTEM_COMPILED_PATH"); | |
239 | if (env && strcmp (env, "") == 0) | |
240 | /* like above */ | |
241 | ; | |
242 | else if (env) | |
243 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
244 | else | |
3c997c4b AW |
245 | cpath = scm_cons (scm_from_locale_string (SCM_CCACHE_DIR), cpath); |
246 | ||
247 | #endif /* SCM_LIBRARY_DIR */ | |
248 | ||
249 | { | |
179fe336 AW |
250 | char cachedir[1024]; |
251 | char *e; | |
252 | #ifdef HAVE_GETPWENT | |
253 | struct passwd *pwd; | |
254 | #endif | |
5b197db8 | 255 | |
86cfb42d | 256 | #define FALLBACK_DIR "guile/ccache/"SCM_EFFECTIVE_VERSION"/"SCM_OBJCODE_COOKIE |
179fe336 AW |
257 | |
258 | if ((e = getenv ("XDG_CACHE_HOME"))) | |
259 | snprintf (cachedir, sizeof(cachedir), "%s" FALLBACK_DIR, e); | |
260 | else if ((e = getenv ("HOME"))) | |
261 | snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, e); | |
5b197db8 | 262 | #ifdef HAVE_GETPWENT |
179fe336 AW |
263 | else if ((pwd = getpwuid (getuid ())) && pwd->pw_dir) |
264 | snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, | |
265 | pwd->pw_dir); | |
5b197db8 | 266 | #endif /* HAVE_GETPWENT */ |
179fe336 AW |
267 | else |
268 | cachedir[0] = 0; | |
269 | ||
270 | if (cachedir[0]) | |
271 | *scm_loc_compile_fallback_path = scm_from_locale_string (cachedir); | |
3c997c4b | 272 | } |
06721500 | 273 | |
11c5e0bf MV |
274 | env = getenv ("GUILE_LOAD_PATH"); |
275 | if (env) | |
276 | path = scm_parse_path (scm_from_locale_string (env), path); | |
01cddfc1 | 277 | |
5b197db8 AW |
278 | env = getenv ("GUILE_LOAD_COMPILED_PATH"); |
279 | if (env) | |
280 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
281 | ||
06721500 | 282 | *scm_loc_load_path = path; |
5b197db8 | 283 | *scm_loc_load_compiled_path = cpath; |
06721500 JB |
284 | } |
285 | ||
04e8fb0a | 286 | SCM scm_listofnullstr; |
06721500 | 287 | |
7d04d68b MV |
288 | /* Utility functions for assembling C strings in a buffer. |
289 | */ | |
290 | ||
291 | struct stringbuf { | |
292 | char *buf, *ptr; | |
293 | size_t buf_len; | |
294 | }; | |
295 | ||
296 | static void | |
297 | stringbuf_free (void *data) | |
298 | { | |
299 | struct stringbuf *buf = (struct stringbuf *)data; | |
300 | free (buf->buf); | |
301 | } | |
302 | ||
303 | static void | |
304 | stringbuf_grow (struct stringbuf *buf) | |
305 | { | |
306 | size_t ptroff = buf->ptr - buf->buf; | |
307 | buf->buf_len *= 2; | |
7d04d68b MV |
308 | buf->buf = scm_realloc (buf->buf, buf->buf_len); |
309 | buf->ptr = buf->buf + ptroff; | |
310 | } | |
311 | ||
312 | static void | |
313 | stringbuf_cat_locale_string (struct stringbuf *buf, SCM str) | |
314 | { | |
315 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
316 | size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len); | |
317 | if (len > max_len) | |
318 | { | |
319 | /* buffer is too small, double its size and try again. | |
320 | */ | |
321 | stringbuf_grow (buf); | |
322 | stringbuf_cat_locale_string (buf, str); | |
323 | } | |
324 | else | |
325 | { | |
326 | /* string fits, terminate it and check for embedded '\0'. | |
327 | */ | |
328 | buf->ptr[len] = '\0'; | |
329 | if (strlen (buf->ptr) != len) | |
330 | scm_misc_error (NULL, | |
331 | "string contains #\\nul character: ~S", | |
332 | scm_list_1 (str)); | |
333 | buf->ptr += len; | |
334 | } | |
335 | } | |
336 | ||
337 | static void | |
338 | stringbuf_cat (struct stringbuf *buf, char *str) | |
339 | { | |
340 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
341 | size_t len = strlen (str); | |
342 | if (len > max_len) | |
343 | { | |
344 | /* buffer is too small, double its size and try again. | |
345 | */ | |
346 | stringbuf_grow (buf); | |
347 | stringbuf_cat (buf, str); | |
348 | } | |
349 | else | |
350 | { | |
351 | /* string fits, copy it into buffer. | |
352 | */ | |
353 | strcpy (buf->ptr, str); | |
354 | buf->ptr += len; | |
355 | } | |
356 | } | |
357 | ||
358 | ||
22f4ee48 AW |
359 | static int |
360 | scm_c_string_has_an_ext (char *str, size_t len, SCM extensions) | |
361 | { | |
362 | for (; !scm_is_null (extensions); extensions = SCM_CDR (extensions)) | |
363 | { | |
364 | char *ext; | |
365 | size_t extlen; | |
366 | int match; | |
367 | ext = scm_to_locale_string (SCM_CAR (extensions)); | |
368 | extlen = strlen (ext); | |
369 | match = (len > extlen && str[len - extlen - 1] == '.' | |
370 | && strncmp (str + (len - extlen), ext, extlen) == 0); | |
371 | free (ext); | |
372 | if (match) | |
373 | return 1; | |
374 | } | |
375 | return 0; | |
376 | } | |
377 | ||
04e8fb0a | 378 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 379 | The file must be readable, and not a directory. |
26544b96 | 380 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
381 | If FILENAME is absolute, return it unchanged. |
382 | If given, EXTENSIONS is a list of strings; for each directory | |
383 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
22f4ee48 AW |
384 | SCM_DEFINE (scm_search_path, "search-path", 2, 2, 0, |
385 | (SCM path, SCM filename, SCM extensions, SCM require_exts), | |
d91788cb MG |
386 | "Search @var{path} for a directory containing a file named\n" |
387 | "@var{filename}. The file must be readable, and not a directory.\n" | |
388 | "If we find one, return its full filename; otherwise, return\n" | |
389 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
390 | "If given, @var{extensions} is a list of strings; for each\n" | |
391 | "directory in @var{path}, we search for @var{filename}\n" | |
392 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 393 | #define FUNC_NAME s_scm_search_path |
06721500 | 394 | { |
7d04d68b | 395 | struct stringbuf buf; |
56384176 | 396 | char *filename_chars; |
7d04d68b MV |
397 | size_t filename_len; |
398 | SCM result = SCM_BOOL_F; | |
06721500 | 399 | |
04e8fb0a | 400 | if (SCM_UNBNDP (extensions)) |
56384176 | 401 | extensions = SCM_EOL; |
56384176 | 402 | |
22f4ee48 AW |
403 | if (SCM_UNBNDP (require_exts)) |
404 | require_exts = SCM_BOOL_F; | |
405 | ||
661ae7ab | 406 | scm_dynwind_begin (0); |
7d04d68b MV |
407 | |
408 | filename_chars = scm_to_locale_string (filename); | |
409 | filename_len = strlen (filename_chars); | |
661ae7ab | 410 | scm_dynwind_free (filename_chars); |
06721500 | 411 | |
26544b96 | 412 | /* If FILENAME is absolute, return it unchanged. */ |
2e945bcc SJ |
413 | #ifdef __MINGW32__ |
414 | if (((filename_len >= 1) && | |
415 | (filename_chars[0] == '/' || filename_chars[0] == '\\')) || | |
416 | ((filename_len >= 3) && filename_chars[1] == ':' && | |
417 | ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') || | |
418 | (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) && | |
419 | (filename_chars[2] == '/' || filename_chars[2] == '\\'))) | |
420 | #else | |
56384176 | 421 | if (filename_len >= 1 && filename_chars[0] == '/') |
2e945bcc | 422 | #endif |
7d04d68b | 423 | { |
22f4ee48 AW |
424 | SCM res = filename; |
425 | if (scm_is_true (require_exts) && | |
426 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
427 | extensions)) | |
428 | res = SCM_BOOL_F; | |
429 | ||
661ae7ab | 430 | scm_dynwind_end (); |
22f4ee48 | 431 | return res; |
7d04d68b | 432 | } |
26544b96 | 433 | |
56384176 JB |
434 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
435 | { | |
436 | char *endp; | |
437 | ||
438 | for (endp = filename_chars + filename_len - 1; | |
439 | endp >= filename_chars; | |
440 | endp--) | |
441 | { | |
442 | if (*endp == '.') | |
443 | { | |
22f4ee48 AW |
444 | if (scm_is_true (require_exts) && |
445 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
446 | extensions)) | |
447 | { | |
448 | /* This filename has an extension, but not one of the right | |
449 | ones... */ | |
450 | scm_dynwind_end (); | |
451 | return SCM_BOOL_F; | |
452 | } | |
56384176 JB |
453 | /* This filename already has an extension, so cancel the |
454 | list of extensions. */ | |
455 | extensions = SCM_EOL; | |
456 | break; | |
457 | } | |
2e945bcc SJ |
458 | #ifdef __MINGW32__ |
459 | else if (*endp == '/' || *endp == '\\') | |
460 | #else | |
56384176 | 461 | else if (*endp == '/') |
2e945bcc | 462 | #endif |
56384176 JB |
463 | /* This filename has no extension, so keep the current list |
464 | of extensions. */ | |
465 | break; | |
466 | } | |
467 | } | |
468 | ||
7d04d68b MV |
469 | /* This simplifies the loop below a bit. |
470 | */ | |
d2e53ed6 | 471 | if (scm_is_null (extensions)) |
7d04d68b | 472 | extensions = scm_listofnullstr; |
06721500 | 473 | |
7d04d68b MV |
474 | buf.buf_len = 512; |
475 | buf.buf = scm_malloc (buf.buf_len); | |
661ae7ab | 476 | scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY); |
0a74e31d | 477 | |
7d04d68b MV |
478 | /* Try every path element. |
479 | */ | |
d2e53ed6 | 480 | for (; scm_is_pair (path); path = SCM_CDR (path)) |
7d04d68b MV |
481 | { |
482 | SCM dir = SCM_CAR (path); | |
483 | SCM exts; | |
484 | size_t sans_ext_len; | |
485 | ||
486 | buf.ptr = buf.buf; | |
487 | stringbuf_cat_locale_string (&buf, dir); | |
488 | ||
489 | /* Concatenate the path name and the filename. */ | |
490 | ||
2e945bcc | 491 | #ifdef __MINGW32__ |
5a6d139b | 492 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\')) |
2e945bcc | 493 | #else |
5a6d139b | 494 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/')) |
2e945bcc | 495 | #endif |
7d04d68b MV |
496 | stringbuf_cat (&buf, "/"); |
497 | ||
498 | stringbuf_cat (&buf, filename_chars); | |
499 | sans_ext_len = buf.ptr - buf.buf; | |
500 | ||
501 | /* Try every extension. */ | |
d2e53ed6 | 502 | for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts)) |
7d04d68b MV |
503 | { |
504 | SCM ext = SCM_CAR (exts); | |
505 | struct stat mode; | |
506 | ||
507 | buf.ptr = buf.buf + sans_ext_len; | |
508 | stringbuf_cat_locale_string (&buf, ext); | |
509 | ||
510 | /* If the file exists at all, we should return it. If the | |
511 | file is inaccessible, then that's an error. */ | |
512 | ||
7d04d68b MV |
513 | if (stat (buf.buf, &mode) == 0 |
514 | && ! (mode.st_mode & S_IFDIR)) | |
515 | { | |
516 | result = scm_from_locale_string (buf.buf); | |
517 | goto end; | |
518 | } | |
519 | } | |
520 | ||
521 | if (!SCM_NULL_OR_NIL_P (exts)) | |
522 | scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list"); | |
523 | } | |
56384176 | 524 | |
7d04d68b MV |
525 | if (!SCM_NULL_OR_NIL_P (path)) |
526 | scm_wrong_type_arg_msg (NULL, 0, path, "proper list"); | |
56384176 | 527 | |
7d04d68b | 528 | end: |
661ae7ab | 529 | scm_dynwind_end (); |
7d04d68b | 530 | return result; |
06721500 | 531 | } |
1bbd0b84 | 532 | #undef FUNC_NAME |
06721500 JB |
533 | |
534 | ||
04e8fb0a MD |
535 | /* Search %load-path for a directory containing a file named FILENAME. |
536 | The file must be readable, and not a directory. | |
537 | If we find one, return its full filename; otherwise, return #f. | |
538 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 539 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
540 | (SCM filename), |
541 | "Search @var{%load-path} for the file named @var{filename},\n" | |
542 | "which must be readable by the current user. If @var{filename}\n" | |
543 | "is found in the list of paths to search or is an absolute\n" | |
544 | "pathname, return its full pathname. Otherwise, return\n" | |
545 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
546 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
547 | "will try each extension automatically.") | |
1bbd0b84 | 548 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
549 | { |
550 | SCM path = *scm_loc_load_path; | |
551 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 552 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 553 | |
2ade72d7 DH |
554 | if (scm_ilength (path) < 0) |
555 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
556 | if (scm_ilength (exts) < 0) | |
557 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
22f4ee48 | 558 | return scm_search_path (path, filename, exts, SCM_UNDEFINED); |
04e8fb0a | 559 | } |
1bbd0b84 | 560 | #undef FUNC_NAME |
04e8fb0a MD |
561 | |
562 | ||
1d022387 | 563 | static int |
535fb833 | 564 | compiled_is_fresh (SCM full_filename, SCM compiled_filename) |
1d022387 AW |
565 | { |
566 | char *source, *compiled; | |
567 | struct stat stat_source, stat_compiled; | |
568 | int res; | |
569 | ||
570 | source = scm_to_locale_string (full_filename); | |
571 | compiled = scm_to_locale_string (compiled_filename); | |
572 | ||
573 | if (stat (source, &stat_source) == 0 | |
574 | && stat (compiled, &stat_compiled) == 0 | |
535fb833 | 575 | && stat_source.st_mtime == stat_compiled.st_mtime) |
1d022387 AW |
576 | { |
577 | res = 1; | |
578 | } | |
579 | else | |
580 | { | |
581 | scm_puts (";;; note: source file ", scm_current_error_port ()); | |
582 | scm_puts (source, scm_current_error_port ()); | |
6fd367e7 | 583 | scm_puts ("\n;;; newer than compiled ", scm_current_error_port ()); |
1d022387 AW |
584 | scm_puts (compiled, scm_current_error_port ()); |
585 | scm_puts ("\n", scm_current_error_port ()); | |
586 | res = 0; | |
1d022387 | 587 | } |
3c997c4b | 588 | |
1d022387 AW |
589 | free (source); |
590 | free (compiled); | |
591 | return res; | |
592 | } | |
593 | ||
594 | static SCM | |
ee001750 | 595 | do_try_autocompile (void *data) |
1d022387 | 596 | { |
3c997c4b AW |
597 | SCM source = PTR2SCM (data); |
598 | SCM comp_mod, compile_file; | |
ee001750 AW |
599 | |
600 | scm_puts (";;; compiling ", scm_current_error_port ()); | |
3c997c4b | 601 | scm_display (source, scm_current_error_port ()); |
ee001750 AW |
602 | scm_newline (scm_current_error_port ()); |
603 | ||
604 | comp_mod = scm_c_resolve_module ("system base compile"); | |
628132c5 AW |
605 | compile_file = scm_module_variable |
606 | (comp_mod, scm_from_locale_symbol ("compile-file")); | |
ee001750 | 607 | |
3c997c4b AW |
608 | if (scm_is_true (compile_file)) |
609 | { | |
610 | SCM res = scm_call_1 (scm_variable_ref (compile_file), source); | |
611 | scm_puts (";;; compiled ", scm_current_error_port ()); | |
612 | scm_display (res, scm_current_error_port ()); | |
613 | scm_newline (scm_current_error_port ()); | |
614 | return res; | |
615 | } | |
616 | else | |
617 | { | |
618 | scm_puts (";;; it seems ", scm_current_error_port ()); | |
619 | scm_display (source, scm_current_error_port ()); | |
620 | scm_puts ("\n;;; is part of the compiler; skipping autocompilation\n", | |
621 | scm_current_error_port ()); | |
622 | return SCM_BOOL_F; | |
623 | } | |
ee001750 AW |
624 | } |
625 | ||
626 | static SCM | |
627 | autocompile_catch_handler (void *data, SCM tag, SCM throw_args) | |
628 | { | |
3c997c4b | 629 | SCM source = PTR2SCM (data); |
ee001750 | 630 | scm_puts (";;; WARNING: compilation of ", scm_current_error_port ()); |
3c997c4b | 631 | scm_display (source, scm_current_error_port ()); |
6fd367e7 | 632 | scm_puts (" failed:\n", scm_current_error_port ()); |
ee001750 AW |
633 | scm_puts (";;; key ", scm_current_error_port ()); |
634 | scm_write (tag, scm_current_error_port ()); | |
635 | scm_puts (", throw args ", scm_current_error_port ()); | |
636 | scm_write (throw_args, scm_current_error_port ()); | |
637 | scm_newline (scm_current_error_port ()); | |
1d022387 AW |
638 | return SCM_BOOL_F; |
639 | } | |
640 | ||
ee001750 | 641 | static SCM |
3c997c4b | 642 | scm_try_autocompile (SCM source) |
ee001750 AW |
643 | { |
644 | static int message_shown = 0; | |
645 | ||
646 | if (scm_is_false (*scm_loc_load_should_autocompile)) | |
647 | return SCM_BOOL_F; | |
648 | ||
649 | if (!message_shown) | |
650 | { | |
651 | scm_puts (";;; note: autocompilation is enabled, set GUILE_AUTO_COMPILE=0\n" | |
6fd367e7 | 652 | ";;; or pass the --no-autocompile argument to disable.\n", |
ee001750 AW |
653 | scm_current_error_port ()); |
654 | message_shown = 1; | |
655 | } | |
656 | ||
ee001750 AW |
657 | return scm_c_catch (SCM_BOOL_T, |
658 | do_try_autocompile, | |
3c997c4b | 659 | SCM2PTR (source), |
ee001750 | 660 | autocompile_catch_handler, |
3c997c4b | 661 | SCM2PTR (source), |
ee001750 AW |
662 | NULL, NULL); |
663 | } | |
664 | ||
0fb81f95 AW |
665 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 1, 0, |
666 | (SCM filename, SCM exception_on_not_found), | |
67e8151b MG |
667 | "Search @var{%load-path} for the file named @var{filename} and\n" |
668 | "load it into the top-level environment. If @var{filename} is a\n" | |
669 | "relative pathname and is not found in the list of search paths,\n" | |
0fb81f95 AW |
670 | "an error is signalled, unless the optional argument\n" |
671 | "@var{exception_on_not_found} is @code{#f}, in which case\n" | |
672 | "@code{#f} is returned instead.") | |
1bbd0b84 | 673 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 674 | { |
22f4ee48 | 675 | SCM full_filename, compiled_filename; |
628132c5 | 676 | int compiled_is_fallback = 0; |
26544b96 | 677 | |
0fb81f95 AW |
678 | if (SCM_UNBNDP (exception_on_not_found)) |
679 | exception_on_not_found = SCM_BOOL_T; | |
680 | ||
26544b96 | 681 | full_filename = scm_sys_search_load_path (filename); |
5b197db8 | 682 | compiled_filename = scm_search_path (*scm_loc_load_compiled_path, |
22f4ee48 AW |
683 | filename, |
684 | *scm_loc_load_compiled_extensions, | |
685 | SCM_BOOL_T); | |
3c997c4b | 686 | |
5ea401bf AW |
687 | if (scm_is_false (compiled_filename) |
688 | && scm_is_true (full_filename) | |
3c997c4b AW |
689 | && scm_is_true (*scm_loc_compile_fallback_path) |
690 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
691 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
5ea401bf | 692 | { |
3c997c4b AW |
693 | SCM fallback = scm_string_append |
694 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
695 | full_filename, | |
696 | scm_car (*scm_loc_load_compiled_extensions))); | |
697 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F))) | |
628132c5 AW |
698 | { |
699 | compiled_filename = fallback; | |
700 | compiled_is_fallback = 1; | |
701 | } | |
5ea401bf AW |
702 | } |
703 | ||
22f4ee48 | 704 | if (scm_is_false (full_filename) && scm_is_false (compiled_filename)) |
0fb81f95 AW |
705 | { |
706 | if (scm_is_true (exception_on_not_found)) | |
707 | SCM_MISC_ERROR ("Unable to find file ~S in load path", | |
708 | scm_list_1 (filename)); | |
709 | else | |
710 | return SCM_BOOL_F; | |
711 | } | |
26544b96 | 712 | |
1d022387 AW |
713 | if (scm_is_false (full_filename) |
714 | || (scm_is_true (compiled_filename) | |
535fb833 | 715 | && compiled_is_fresh (full_filename, compiled_filename))) |
22f4ee48 AW |
716 | return scm_load_compiled_with_vm (compiled_filename); |
717 | ||
628132c5 AW |
718 | /* Perhaps there was the installed .go that was stale, but our fallback is |
719 | fresh. Let's try that. Duplicating code, but perhaps that's OK. */ | |
720 | ||
721 | if (!compiled_is_fallback | |
722 | && scm_is_true (*scm_loc_compile_fallback_path) | |
723 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
724 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
725 | { | |
726 | SCM fallback = scm_string_append | |
727 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
728 | full_filename, | |
729 | scm_car (*scm_loc_load_compiled_extensions))); | |
730 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F)) | |
535fb833 | 731 | && compiled_is_fresh (full_filename, fallback)) |
628132c5 AW |
732 | { |
733 | scm_puts (";;; found fresh local cache at ", scm_current_error_port ()); | |
734 | scm_display (fallback, scm_current_error_port ()); | |
735 | scm_newline (scm_current_error_port ()); | |
736 | return scm_load_compiled_with_vm (compiled_filename); | |
737 | } | |
3c997c4b | 738 | } |
628132c5 AW |
739 | |
740 | /* Otherwise, we bottom out here. */ | |
741 | { | |
742 | SCM freshly_compiled = scm_try_autocompile (full_filename); | |
743 | ||
744 | if (scm_is_true (freshly_compiled)) | |
745 | return scm_load_compiled_with_vm (freshly_compiled); | |
746 | else | |
747 | return scm_primitive_load (full_filename); | |
748 | } | |
06721500 | 749 | } |
1bbd0b84 | 750 | #undef FUNC_NAME |
06721500 | 751 | |
c519b272 MV |
752 | SCM |
753 | scm_c_primitive_load_path (const char *filename) | |
754 | { | |
0fb81f95 AW |
755 | return scm_primitive_load_path (scm_from_locale_string (filename), |
756 | SCM_BOOL_T); | |
c519b272 MV |
757 | } |
758 | ||
06721500 | 759 | \f |
e151bee6 | 760 | /* Information about the build environment. */ |
06721500 | 761 | |
e151bee6 JB |
762 | /* Initialize the scheme variable %guile-build-info, based on data |
763 | provided by the Makefile, via libpath.h. */ | |
764 | static void | |
765 | init_build_info () | |
766 | { | |
767 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
86d31dfe | 768 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL)); |
c014a02e | 769 | unsigned long i; |
e151bee6 JB |
770 | |
771 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
cc95e00a MV |
772 | { |
773 | SCM key = scm_from_locale_symbol (info[i].name); | |
774 | SCM val = scm_from_locale_string (info[i].value); | |
775 | *loc = scm_acons (key, val, *loc); | |
776 | } | |
e151bee6 JB |
777 | } |
778 | ||
e151bee6 | 779 | \f |
0f2d19dd JB |
780 | void |
781 | scm_init_load () | |
0f2d19dd | 782 | { |
1afff620 | 783 | scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr)); |
86d31dfe | 784 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 785 | scm_loc_load_extensions |
86d31dfe | 786 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
cc95e00a MV |
787 | scm_list_2 (scm_from_locale_string (".scm"), |
788 | scm_nullstr))); | |
5b197db8 AW |
789 | scm_loc_load_compiled_path |
790 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL)); | |
22f4ee48 AW |
791 | scm_loc_load_compiled_extensions |
792 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions", | |
793 | scm_list_1 (scm_from_locale_string (".go")))); | |
86d31dfe | 794 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); |
06721500 | 795 | |
5ea401bf AW |
796 | scm_loc_compile_fallback_path |
797 | = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F)); | |
798 | ||
ee001750 AW |
799 | scm_loc_load_should_autocompile |
800 | = SCM_VARIABLE_LOC (scm_c_define ("%load-should-autocompile", SCM_BOOL_F)); | |
801 | ||
ec3a8ace NJ |
802 | the_reader = scm_make_fluid (); |
803 | the_reader_fluid_num = SCM_FLUID_NUM (the_reader); | |
804 | SCM_FAST_FLUID_SET_X (the_reader_fluid_num, SCM_BOOL_F); | |
805 | scm_c_define("current-reader", the_reader); | |
806 | ||
e151bee6 JB |
807 | init_build_info (); |
808 | ||
a0599745 | 809 | #include "libguile/load.x" |
0f2d19dd | 810 | } |
89e00824 ML |
811 | |
812 | /* | |
813 | Local Variables: | |
814 | c-file-style: "gnu" | |
815 | End: | |
816 | */ |