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 | |
6e5c02b8 AW |
256 | #define FALLBACK_DIR \ |
257 | "guile/ccache/" SCM_EFFECTIVE_VERSION "-" SCM_OBJCODE_MACHINE_VERSION_STRING | |
179fe336 AW |
258 | |
259 | if ((e = getenv ("XDG_CACHE_HOME"))) | |
260 | snprintf (cachedir, sizeof(cachedir), "%s" FALLBACK_DIR, e); | |
261 | else if ((e = getenv ("HOME"))) | |
262 | snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, e); | |
5b197db8 | 263 | #ifdef HAVE_GETPWENT |
179fe336 AW |
264 | else if ((pwd = getpwuid (getuid ())) && pwd->pw_dir) |
265 | snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, | |
266 | pwd->pw_dir); | |
5b197db8 | 267 | #endif /* HAVE_GETPWENT */ |
179fe336 AW |
268 | else |
269 | cachedir[0] = 0; | |
270 | ||
271 | if (cachedir[0]) | |
272 | *scm_loc_compile_fallback_path = scm_from_locale_string (cachedir); | |
3c997c4b | 273 | } |
06721500 | 274 | |
11c5e0bf MV |
275 | env = getenv ("GUILE_LOAD_PATH"); |
276 | if (env) | |
277 | path = scm_parse_path (scm_from_locale_string (env), path); | |
01cddfc1 | 278 | |
5b197db8 AW |
279 | env = getenv ("GUILE_LOAD_COMPILED_PATH"); |
280 | if (env) | |
281 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
282 | ||
06721500 | 283 | *scm_loc_load_path = path; |
5b197db8 | 284 | *scm_loc_load_compiled_path = cpath; |
06721500 JB |
285 | } |
286 | ||
04e8fb0a | 287 | SCM scm_listofnullstr; |
06721500 | 288 | |
7d04d68b MV |
289 | /* Utility functions for assembling C strings in a buffer. |
290 | */ | |
291 | ||
292 | struct stringbuf { | |
293 | char *buf, *ptr; | |
294 | size_t buf_len; | |
295 | }; | |
296 | ||
297 | static void | |
298 | stringbuf_free (void *data) | |
299 | { | |
300 | struct stringbuf *buf = (struct stringbuf *)data; | |
301 | free (buf->buf); | |
302 | } | |
303 | ||
304 | static void | |
305 | stringbuf_grow (struct stringbuf *buf) | |
306 | { | |
307 | size_t ptroff = buf->ptr - buf->buf; | |
308 | buf->buf_len *= 2; | |
7d04d68b MV |
309 | buf->buf = scm_realloc (buf->buf, buf->buf_len); |
310 | buf->ptr = buf->buf + ptroff; | |
311 | } | |
312 | ||
313 | static void | |
314 | stringbuf_cat_locale_string (struct stringbuf *buf, SCM str) | |
315 | { | |
316 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
317 | size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len); | |
318 | if (len > max_len) | |
319 | { | |
320 | /* buffer is too small, double its size and try again. | |
321 | */ | |
322 | stringbuf_grow (buf); | |
323 | stringbuf_cat_locale_string (buf, str); | |
324 | } | |
325 | else | |
326 | { | |
327 | /* string fits, terminate it and check for embedded '\0'. | |
328 | */ | |
329 | buf->ptr[len] = '\0'; | |
330 | if (strlen (buf->ptr) != len) | |
331 | scm_misc_error (NULL, | |
332 | "string contains #\\nul character: ~S", | |
333 | scm_list_1 (str)); | |
334 | buf->ptr += len; | |
335 | } | |
336 | } | |
337 | ||
338 | static void | |
339 | stringbuf_cat (struct stringbuf *buf, char *str) | |
340 | { | |
341 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
342 | size_t len = strlen (str); | |
343 | if (len > max_len) | |
344 | { | |
345 | /* buffer is too small, double its size and try again. | |
346 | */ | |
347 | stringbuf_grow (buf); | |
348 | stringbuf_cat (buf, str); | |
349 | } | |
350 | else | |
351 | { | |
352 | /* string fits, copy it into buffer. | |
353 | */ | |
354 | strcpy (buf->ptr, str); | |
355 | buf->ptr += len; | |
356 | } | |
357 | } | |
358 | ||
359 | ||
22f4ee48 AW |
360 | static int |
361 | scm_c_string_has_an_ext (char *str, size_t len, SCM extensions) | |
362 | { | |
363 | for (; !scm_is_null (extensions); extensions = SCM_CDR (extensions)) | |
364 | { | |
365 | char *ext; | |
366 | size_t extlen; | |
367 | int match; | |
368 | ext = scm_to_locale_string (SCM_CAR (extensions)); | |
369 | extlen = strlen (ext); | |
370 | match = (len > extlen && str[len - extlen - 1] == '.' | |
371 | && strncmp (str + (len - extlen), ext, extlen) == 0); | |
372 | free (ext); | |
373 | if (match) | |
374 | return 1; | |
375 | } | |
376 | return 0; | |
377 | } | |
378 | ||
04e8fb0a | 379 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 380 | The file must be readable, and not a directory. |
26544b96 | 381 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
382 | If FILENAME is absolute, return it unchanged. |
383 | If given, EXTENSIONS is a list of strings; for each directory | |
384 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
22f4ee48 AW |
385 | SCM_DEFINE (scm_search_path, "search-path", 2, 2, 0, |
386 | (SCM path, SCM filename, SCM extensions, SCM require_exts), | |
d91788cb MG |
387 | "Search @var{path} for a directory containing a file named\n" |
388 | "@var{filename}. The file must be readable, and not a directory.\n" | |
389 | "If we find one, return its full filename; otherwise, return\n" | |
390 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
391 | "If given, @var{extensions} is a list of strings; for each\n" | |
392 | "directory in @var{path}, we search for @var{filename}\n" | |
393 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 394 | #define FUNC_NAME s_scm_search_path |
06721500 | 395 | { |
7d04d68b | 396 | struct stringbuf buf; |
56384176 | 397 | char *filename_chars; |
7d04d68b MV |
398 | size_t filename_len; |
399 | SCM result = SCM_BOOL_F; | |
06721500 | 400 | |
04e8fb0a | 401 | if (SCM_UNBNDP (extensions)) |
56384176 | 402 | extensions = SCM_EOL; |
56384176 | 403 | |
22f4ee48 AW |
404 | if (SCM_UNBNDP (require_exts)) |
405 | require_exts = SCM_BOOL_F; | |
406 | ||
661ae7ab | 407 | scm_dynwind_begin (0); |
7d04d68b MV |
408 | |
409 | filename_chars = scm_to_locale_string (filename); | |
410 | filename_len = strlen (filename_chars); | |
661ae7ab | 411 | scm_dynwind_free (filename_chars); |
06721500 | 412 | |
26544b96 | 413 | /* If FILENAME is absolute, return it unchanged. */ |
2e945bcc SJ |
414 | #ifdef __MINGW32__ |
415 | if (((filename_len >= 1) && | |
416 | (filename_chars[0] == '/' || filename_chars[0] == '\\')) || | |
417 | ((filename_len >= 3) && filename_chars[1] == ':' && | |
418 | ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') || | |
419 | (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) && | |
420 | (filename_chars[2] == '/' || filename_chars[2] == '\\'))) | |
421 | #else | |
56384176 | 422 | if (filename_len >= 1 && filename_chars[0] == '/') |
2e945bcc | 423 | #endif |
7d04d68b | 424 | { |
22f4ee48 AW |
425 | SCM res = filename; |
426 | if (scm_is_true (require_exts) && | |
427 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
428 | extensions)) | |
429 | res = SCM_BOOL_F; | |
430 | ||
661ae7ab | 431 | scm_dynwind_end (); |
22f4ee48 | 432 | return res; |
7d04d68b | 433 | } |
26544b96 | 434 | |
56384176 JB |
435 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
436 | { | |
437 | char *endp; | |
438 | ||
439 | for (endp = filename_chars + filename_len - 1; | |
440 | endp >= filename_chars; | |
441 | endp--) | |
442 | { | |
443 | if (*endp == '.') | |
444 | { | |
22f4ee48 AW |
445 | if (scm_is_true (require_exts) && |
446 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
447 | extensions)) | |
448 | { | |
449 | /* This filename has an extension, but not one of the right | |
450 | ones... */ | |
451 | scm_dynwind_end (); | |
452 | return SCM_BOOL_F; | |
453 | } | |
56384176 JB |
454 | /* This filename already has an extension, so cancel the |
455 | list of extensions. */ | |
456 | extensions = SCM_EOL; | |
457 | break; | |
458 | } | |
2e945bcc SJ |
459 | #ifdef __MINGW32__ |
460 | else if (*endp == '/' || *endp == '\\') | |
461 | #else | |
56384176 | 462 | else if (*endp == '/') |
2e945bcc | 463 | #endif |
56384176 JB |
464 | /* This filename has no extension, so keep the current list |
465 | of extensions. */ | |
466 | break; | |
467 | } | |
468 | } | |
469 | ||
7d04d68b MV |
470 | /* This simplifies the loop below a bit. |
471 | */ | |
d2e53ed6 | 472 | if (scm_is_null (extensions)) |
7d04d68b | 473 | extensions = scm_listofnullstr; |
06721500 | 474 | |
7d04d68b MV |
475 | buf.buf_len = 512; |
476 | buf.buf = scm_malloc (buf.buf_len); | |
661ae7ab | 477 | scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY); |
0a74e31d | 478 | |
7d04d68b MV |
479 | /* Try every path element. |
480 | */ | |
d2e53ed6 | 481 | for (; scm_is_pair (path); path = SCM_CDR (path)) |
7d04d68b MV |
482 | { |
483 | SCM dir = SCM_CAR (path); | |
484 | SCM exts; | |
485 | size_t sans_ext_len; | |
486 | ||
487 | buf.ptr = buf.buf; | |
488 | stringbuf_cat_locale_string (&buf, dir); | |
489 | ||
490 | /* Concatenate the path name and the filename. */ | |
491 | ||
2e945bcc | 492 | #ifdef __MINGW32__ |
5a6d139b | 493 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\')) |
2e945bcc | 494 | #else |
5a6d139b | 495 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/')) |
2e945bcc | 496 | #endif |
7d04d68b MV |
497 | stringbuf_cat (&buf, "/"); |
498 | ||
499 | stringbuf_cat (&buf, filename_chars); | |
500 | sans_ext_len = buf.ptr - buf.buf; | |
501 | ||
502 | /* Try every extension. */ | |
d2e53ed6 | 503 | for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts)) |
7d04d68b MV |
504 | { |
505 | SCM ext = SCM_CAR (exts); | |
506 | struct stat mode; | |
507 | ||
508 | buf.ptr = buf.buf + sans_ext_len; | |
509 | stringbuf_cat_locale_string (&buf, ext); | |
510 | ||
511 | /* If the file exists at all, we should return it. If the | |
512 | file is inaccessible, then that's an error. */ | |
513 | ||
7d04d68b MV |
514 | if (stat (buf.buf, &mode) == 0 |
515 | && ! (mode.st_mode & S_IFDIR)) | |
516 | { | |
517 | result = scm_from_locale_string (buf.buf); | |
518 | goto end; | |
519 | } | |
520 | } | |
521 | ||
522 | if (!SCM_NULL_OR_NIL_P (exts)) | |
523 | scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list"); | |
524 | } | |
56384176 | 525 | |
7d04d68b MV |
526 | if (!SCM_NULL_OR_NIL_P (path)) |
527 | scm_wrong_type_arg_msg (NULL, 0, path, "proper list"); | |
56384176 | 528 | |
7d04d68b | 529 | end: |
661ae7ab | 530 | scm_dynwind_end (); |
7d04d68b | 531 | return result; |
06721500 | 532 | } |
1bbd0b84 | 533 | #undef FUNC_NAME |
06721500 JB |
534 | |
535 | ||
04e8fb0a MD |
536 | /* Search %load-path for a directory containing a file named FILENAME. |
537 | The file must be readable, and not a directory. | |
538 | If we find one, return its full filename; otherwise, return #f. | |
539 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 540 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
541 | (SCM filename), |
542 | "Search @var{%load-path} for the file named @var{filename},\n" | |
543 | "which must be readable by the current user. If @var{filename}\n" | |
544 | "is found in the list of paths to search or is an absolute\n" | |
545 | "pathname, return its full pathname. Otherwise, return\n" | |
546 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
547 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
548 | "will try each extension automatically.") | |
1bbd0b84 | 549 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
550 | { |
551 | SCM path = *scm_loc_load_path; | |
552 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 553 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 554 | |
2ade72d7 DH |
555 | if (scm_ilength (path) < 0) |
556 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
557 | if (scm_ilength (exts) < 0) | |
558 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
22f4ee48 | 559 | return scm_search_path (path, filename, exts, SCM_UNDEFINED); |
04e8fb0a | 560 | } |
1bbd0b84 | 561 | #undef FUNC_NAME |
04e8fb0a MD |
562 | |
563 | ||
1d022387 | 564 | static int |
535fb833 | 565 | compiled_is_fresh (SCM full_filename, SCM compiled_filename) |
1d022387 AW |
566 | { |
567 | char *source, *compiled; | |
568 | struct stat stat_source, stat_compiled; | |
569 | int res; | |
570 | ||
571 | source = scm_to_locale_string (full_filename); | |
572 | compiled = scm_to_locale_string (compiled_filename); | |
573 | ||
574 | if (stat (source, &stat_source) == 0 | |
575 | && stat (compiled, &stat_compiled) == 0 | |
535fb833 | 576 | && stat_source.st_mtime == stat_compiled.st_mtime) |
1d022387 AW |
577 | { |
578 | res = 1; | |
579 | } | |
580 | else | |
581 | { | |
582 | scm_puts (";;; note: source file ", scm_current_error_port ()); | |
583 | scm_puts (source, scm_current_error_port ()); | |
6fd367e7 | 584 | scm_puts ("\n;;; newer than compiled ", scm_current_error_port ()); |
1d022387 AW |
585 | scm_puts (compiled, scm_current_error_port ()); |
586 | scm_puts ("\n", scm_current_error_port ()); | |
587 | res = 0; | |
1d022387 | 588 | } |
3c997c4b | 589 | |
1d022387 AW |
590 | free (source); |
591 | free (compiled); | |
592 | return res; | |
593 | } | |
594 | ||
595 | static SCM | |
ee001750 | 596 | do_try_autocompile (void *data) |
1d022387 | 597 | { |
3c997c4b AW |
598 | SCM source = PTR2SCM (data); |
599 | SCM comp_mod, compile_file; | |
ee001750 AW |
600 | |
601 | scm_puts (";;; compiling ", scm_current_error_port ()); | |
3c997c4b | 602 | scm_display (source, scm_current_error_port ()); |
ee001750 AW |
603 | scm_newline (scm_current_error_port ()); |
604 | ||
605 | comp_mod = scm_c_resolve_module ("system base compile"); | |
628132c5 AW |
606 | compile_file = scm_module_variable |
607 | (comp_mod, scm_from_locale_symbol ("compile-file")); | |
ee001750 | 608 | |
3c997c4b AW |
609 | if (scm_is_true (compile_file)) |
610 | { | |
611 | SCM res = scm_call_1 (scm_variable_ref (compile_file), source); | |
612 | scm_puts (";;; compiled ", scm_current_error_port ()); | |
613 | scm_display (res, scm_current_error_port ()); | |
614 | scm_newline (scm_current_error_port ()); | |
615 | return res; | |
616 | } | |
617 | else | |
618 | { | |
619 | scm_puts (";;; it seems ", scm_current_error_port ()); | |
620 | scm_display (source, scm_current_error_port ()); | |
621 | scm_puts ("\n;;; is part of the compiler; skipping autocompilation\n", | |
622 | scm_current_error_port ()); | |
623 | return SCM_BOOL_F; | |
624 | } | |
ee001750 AW |
625 | } |
626 | ||
627 | static SCM | |
628 | autocompile_catch_handler (void *data, SCM tag, SCM throw_args) | |
629 | { | |
3c997c4b | 630 | SCM source = PTR2SCM (data); |
ee001750 | 631 | scm_puts (";;; WARNING: compilation of ", scm_current_error_port ()); |
3c997c4b | 632 | scm_display (source, scm_current_error_port ()); |
6fd367e7 | 633 | scm_puts (" failed:\n", scm_current_error_port ()); |
ee001750 AW |
634 | scm_puts (";;; key ", scm_current_error_port ()); |
635 | scm_write (tag, scm_current_error_port ()); | |
636 | scm_puts (", throw args ", scm_current_error_port ()); | |
637 | scm_write (throw_args, scm_current_error_port ()); | |
638 | scm_newline (scm_current_error_port ()); | |
1d022387 AW |
639 | return SCM_BOOL_F; |
640 | } | |
641 | ||
ee001750 | 642 | static SCM |
3c997c4b | 643 | scm_try_autocompile (SCM source) |
ee001750 AW |
644 | { |
645 | static int message_shown = 0; | |
646 | ||
647 | if (scm_is_false (*scm_loc_load_should_autocompile)) | |
648 | return SCM_BOOL_F; | |
649 | ||
650 | if (!message_shown) | |
651 | { | |
652 | scm_puts (";;; note: autocompilation is enabled, set GUILE_AUTO_COMPILE=0\n" | |
6fd367e7 | 653 | ";;; or pass the --no-autocompile argument to disable.\n", |
ee001750 AW |
654 | scm_current_error_port ()); |
655 | message_shown = 1; | |
656 | } | |
657 | ||
ee001750 AW |
658 | return scm_c_catch (SCM_BOOL_T, |
659 | do_try_autocompile, | |
3c997c4b | 660 | SCM2PTR (source), |
ee001750 | 661 | autocompile_catch_handler, |
3c997c4b | 662 | SCM2PTR (source), |
ee001750 AW |
663 | NULL, NULL); |
664 | } | |
665 | ||
0fb81f95 AW |
666 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 1, 0, |
667 | (SCM filename, SCM exception_on_not_found), | |
67e8151b MG |
668 | "Search @var{%load-path} for the file named @var{filename} and\n" |
669 | "load it into the top-level environment. If @var{filename} is a\n" | |
670 | "relative pathname and is not found in the list of search paths,\n" | |
0fb81f95 AW |
671 | "an error is signalled, unless the optional argument\n" |
672 | "@var{exception_on_not_found} is @code{#f}, in which case\n" | |
673 | "@code{#f} is returned instead.") | |
1bbd0b84 | 674 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 675 | { |
22f4ee48 | 676 | SCM full_filename, compiled_filename; |
628132c5 | 677 | int compiled_is_fallback = 0; |
26544b96 | 678 | |
0fb81f95 AW |
679 | if (SCM_UNBNDP (exception_on_not_found)) |
680 | exception_on_not_found = SCM_BOOL_T; | |
681 | ||
26544b96 | 682 | full_filename = scm_sys_search_load_path (filename); |
5b197db8 | 683 | compiled_filename = scm_search_path (*scm_loc_load_compiled_path, |
22f4ee48 AW |
684 | filename, |
685 | *scm_loc_load_compiled_extensions, | |
686 | SCM_BOOL_T); | |
3c997c4b | 687 | |
5ea401bf AW |
688 | if (scm_is_false (compiled_filename) |
689 | && scm_is_true (full_filename) | |
3c997c4b AW |
690 | && scm_is_true (*scm_loc_compile_fallback_path) |
691 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
692 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
5ea401bf | 693 | { |
3c997c4b AW |
694 | SCM fallback = scm_string_append |
695 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
696 | full_filename, | |
697 | scm_car (*scm_loc_load_compiled_extensions))); | |
698 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F))) | |
628132c5 AW |
699 | { |
700 | compiled_filename = fallback; | |
701 | compiled_is_fallback = 1; | |
702 | } | |
5ea401bf AW |
703 | } |
704 | ||
22f4ee48 | 705 | if (scm_is_false (full_filename) && scm_is_false (compiled_filename)) |
0fb81f95 AW |
706 | { |
707 | if (scm_is_true (exception_on_not_found)) | |
708 | SCM_MISC_ERROR ("Unable to find file ~S in load path", | |
709 | scm_list_1 (filename)); | |
710 | else | |
711 | return SCM_BOOL_F; | |
712 | } | |
26544b96 | 713 | |
1d022387 AW |
714 | if (scm_is_false (full_filename) |
715 | || (scm_is_true (compiled_filename) | |
535fb833 | 716 | && compiled_is_fresh (full_filename, compiled_filename))) |
22f4ee48 AW |
717 | return scm_load_compiled_with_vm (compiled_filename); |
718 | ||
628132c5 AW |
719 | /* Perhaps there was the installed .go that was stale, but our fallback is |
720 | fresh. Let's try that. Duplicating code, but perhaps that's OK. */ | |
721 | ||
722 | if (!compiled_is_fallback | |
723 | && scm_is_true (*scm_loc_compile_fallback_path) | |
724 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
725 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
726 | { | |
727 | SCM fallback = scm_string_append | |
728 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
729 | full_filename, | |
730 | scm_car (*scm_loc_load_compiled_extensions))); | |
731 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F)) | |
535fb833 | 732 | && compiled_is_fresh (full_filename, fallback)) |
628132c5 AW |
733 | { |
734 | scm_puts (";;; found fresh local cache at ", scm_current_error_port ()); | |
735 | scm_display (fallback, scm_current_error_port ()); | |
736 | scm_newline (scm_current_error_port ()); | |
737 | return scm_load_compiled_with_vm (compiled_filename); | |
738 | } | |
3c997c4b | 739 | } |
628132c5 AW |
740 | |
741 | /* Otherwise, we bottom out here. */ | |
742 | { | |
743 | SCM freshly_compiled = scm_try_autocompile (full_filename); | |
744 | ||
745 | if (scm_is_true (freshly_compiled)) | |
746 | return scm_load_compiled_with_vm (freshly_compiled); | |
747 | else | |
748 | return scm_primitive_load (full_filename); | |
749 | } | |
06721500 | 750 | } |
1bbd0b84 | 751 | #undef FUNC_NAME |
06721500 | 752 | |
c519b272 MV |
753 | SCM |
754 | scm_c_primitive_load_path (const char *filename) | |
755 | { | |
0fb81f95 AW |
756 | return scm_primitive_load_path (scm_from_locale_string (filename), |
757 | SCM_BOOL_T); | |
c519b272 MV |
758 | } |
759 | ||
06721500 | 760 | \f |
e151bee6 | 761 | /* Information about the build environment. */ |
06721500 | 762 | |
e151bee6 JB |
763 | /* Initialize the scheme variable %guile-build-info, based on data |
764 | provided by the Makefile, via libpath.h. */ | |
765 | static void | |
766 | init_build_info () | |
767 | { | |
768 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
86d31dfe | 769 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL)); |
c014a02e | 770 | unsigned long i; |
e151bee6 JB |
771 | |
772 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
cc95e00a MV |
773 | { |
774 | SCM key = scm_from_locale_symbol (info[i].name); | |
775 | SCM val = scm_from_locale_string (info[i].value); | |
776 | *loc = scm_acons (key, val, *loc); | |
777 | } | |
e151bee6 JB |
778 | } |
779 | ||
e151bee6 | 780 | \f |
0f2d19dd JB |
781 | void |
782 | scm_init_load () | |
0f2d19dd | 783 | { |
1afff620 | 784 | scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr)); |
86d31dfe | 785 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 786 | scm_loc_load_extensions |
86d31dfe | 787 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
cc95e00a MV |
788 | scm_list_2 (scm_from_locale_string (".scm"), |
789 | scm_nullstr))); | |
5b197db8 AW |
790 | scm_loc_load_compiled_path |
791 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL)); | |
22f4ee48 AW |
792 | scm_loc_load_compiled_extensions |
793 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions", | |
794 | scm_list_1 (scm_from_locale_string (".go")))); | |
86d31dfe | 795 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); |
06721500 | 796 | |
5ea401bf AW |
797 | scm_loc_compile_fallback_path |
798 | = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F)); | |
799 | ||
ee001750 AW |
800 | scm_loc_load_should_autocompile |
801 | = SCM_VARIABLE_LOC (scm_c_define ("%load-should-autocompile", SCM_BOOL_F)); | |
802 | ||
ec3a8ace NJ |
803 | the_reader = scm_make_fluid (); |
804 | the_reader_fluid_num = SCM_FLUID_NUM (the_reader); | |
805 | SCM_FAST_FLUID_SET_X (the_reader_fluid_num, SCM_BOOL_F); | |
806 | scm_c_define("current-reader", the_reader); | |
807 | ||
e151bee6 JB |
808 | init_build_info (); |
809 | ||
a0599745 | 810 | #include "libguile/load.x" |
0f2d19dd | 811 | } |
89e00824 ML |
812 | |
813 | /* | |
814 | Local Variables: | |
815 | c-file-style: "gnu" | |
816 | End: | |
817 | */ |