Commit | Line | Data |
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fbb857a4 | 1 | /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2004, 2006, 2008, 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; | |
8b039053 | 74 | |
ec3a8ace | 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; |
889975e5 | 88 | char *encoding; |
a6d9e5ab | 89 | SCM_VALIDATE_STRING (1, filename); |
bc36d050 | 90 | if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook))) |
2ade72d7 DH |
91 | SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f", |
92 | SCM_EOL); | |
26544b96 | 93 | |
bc36d050 | 94 | if (!scm_is_false (hook)) |
fdc28395 | 95 | scm_call_1 (hook, filename); |
26544b96 | 96 | |
1bbd0b84 | 97 | { /* scope */ |
b5623573 | 98 | SCM port = scm_open_file (filename, scm_from_locale_string ("r")); |
661ae7ab MV |
99 | scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE); |
100 | scm_i_dynwind_current_load_port (port); | |
889975e5 MG |
101 | encoding = scm_scan_for_encoding (port); |
102 | if (encoding) | |
103 | { | |
104 | scm_i_set_port_encoding_x (port, encoding); | |
105 | free (encoding); | |
106 | } | |
107 | else | |
108 | /* The file has no encoding declaraed. We'll presume Latin-1. */ | |
109 | scm_i_set_port_encoding_x (port, NULL); | |
b5623573 MV |
110 | while (1) |
111 | { | |
ec3a8ace NJ |
112 | SCM reader, form; |
113 | ||
114 | /* Lookup and use the current reader to read the next | |
115 | expression. */ | |
8b039053 | 116 | reader = scm_fluid_ref (the_reader); |
ec3a8ace NJ |
117 | if (reader == SCM_BOOL_F) |
118 | form = scm_read (port); | |
119 | else | |
120 | form = scm_call_1 (reader, port); | |
121 | ||
b5623573 MV |
122 | if (SCM_EOF_OBJECT_P (form)) |
123 | break; | |
ec3a8ace | 124 | |
b5623573 MV |
125 | scm_primitive_eval_x (form); |
126 | } | |
127 | ||
661ae7ab | 128 | scm_dynwind_end (); |
0f2d19dd JB |
129 | scm_close_port (port); |
130 | } | |
b59b97ba | 131 | return SCM_UNSPECIFIED; |
0f2d19dd | 132 | } |
1bbd0b84 | 133 | #undef FUNC_NAME |
0f2d19dd | 134 | |
c519b272 MV |
135 | SCM |
136 | scm_c_primitive_load (const char *filename) | |
137 | { | |
cc95e00a | 138 | return scm_primitive_load (scm_from_locale_string (filename)); |
c519b272 MV |
139 | } |
140 | ||
0f2d19dd | 141 | \f |
3feedb00 MD |
142 | /* Builtin path to scheme library files. */ |
143 | #ifdef SCM_PKGDATA_DIR | |
a1ec6916 | 144 | SCM_DEFINE (scm_sys_package_data_dir, "%package-data-dir", 0, 0, 0, |
1bbd0b84 | 145 | (), |
b380b885 MD |
146 | "Return the name of the directory where Scheme packages, modules and\n" |
147 | "libraries are kept. On most Unix systems, this will be\n" | |
148 | "@samp{/usr/local/share/guile}.") | |
1bbd0b84 | 149 | #define FUNC_NAME s_scm_sys_package_data_dir |
3feedb00 | 150 | { |
cc95e00a | 151 | return scm_from_locale_string (SCM_PKGDATA_DIR); |
3feedb00 | 152 | } |
1bbd0b84 | 153 | #undef FUNC_NAME |
3feedb00 MD |
154 | #endif /* SCM_PKGDATA_DIR */ |
155 | ||
e8e9b690 | 156 | #ifdef SCM_LIBRARY_DIR |
a1ec6916 | 157 | SCM_DEFINE (scm_sys_library_dir, "%library-dir", 0,0,0, |
e8e9b690 | 158 | (), |
b380b885 MD |
159 | "Return the directory where the Guile Scheme library files are installed.\n" |
160 | "E.g., may return \"/usr/share/guile/1.3.5\".") | |
e8e9b690 GB |
161 | #define FUNC_NAME s_scm_sys_library_dir |
162 | { | |
cc95e00a | 163 | return scm_from_locale_string (SCM_LIBRARY_DIR); |
e8e9b690 GB |
164 | } |
165 | #undef FUNC_NAME | |
166 | #endif /* SCM_LIBRARY_DIR */ | |
167 | ||
168 | #ifdef SCM_SITE_DIR | |
a1ec6916 | 169 | SCM_DEFINE (scm_sys_site_dir, "%site-dir", 0,0,0, |
e8e9b690 | 170 | (), |
b380b885 MD |
171 | "Return the directory where the Guile site files are installed.\n" |
172 | "E.g., may return \"/usr/share/guile/site\".") | |
e8e9b690 GB |
173 | #define FUNC_NAME s_scm_sys_site_dir |
174 | { | |
cc95e00a | 175 | return scm_from_locale_string (SCM_SITE_DIR); |
e8e9b690 GB |
176 | } |
177 | #undef FUNC_NAME | |
178 | #endif /* SCM_SITE_DIR */ | |
179 | ||
180 | ||
181 | ||
3feedb00 | 182 | \f |
06721500 | 183 | /* Initializing the load path, and searching it. */ |
0f2d19dd | 184 | |
26544b96 | 185 | /* List of names of directories we search for files to load. */ |
06721500 JB |
186 | static SCM *scm_loc_load_path; |
187 | ||
26544b96 JB |
188 | /* List of extensions we try adding to the filenames. */ |
189 | static SCM *scm_loc_load_extensions; | |
190 | ||
5b197db8 AW |
191 | /* Like %load-path and %load-extensions, but for compiled files. */ |
192 | static SCM *scm_loc_load_compiled_path; | |
22f4ee48 AW |
193 | static SCM *scm_loc_load_compiled_extensions; |
194 | ||
ee001750 AW |
195 | /* Whether we should try to auto-compile. */ |
196 | static SCM *scm_loc_load_should_autocompile; | |
01cddfc1 | 197 | |
5ea401bf AW |
198 | /* The fallback path for autocompilation */ |
199 | static SCM *scm_loc_compile_fallback_path; | |
01cddfc1 | 200 | |
a1ec6916 | 201 | SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0, |
1bbd0b84 | 202 | (SCM path, SCM tail), |
d91788cb MG |
203 | "Parse @var{path}, which is expected to be a colon-separated\n" |
204 | "string, into a list and return the resulting list with\n" | |
205 | "@var{tail} appended. If @var{path} is @code{#f}, @var{tail}\n" | |
206 | "is returned.") | |
1bbd0b84 | 207 | #define FUNC_NAME s_scm_parse_path |
04e8fb0a | 208 | { |
7d04d68b MV |
209 | #ifdef __MINGW32__ |
210 | SCM sep = SCM_MAKE_CHAR (';'); | |
211 | #else | |
212 | SCM sep = SCM_MAKE_CHAR (':'); | |
213 | #endif | |
214 | ||
04e8fb0a MD |
215 | if (SCM_UNBNDP (tail)) |
216 | tail = SCM_EOL; | |
7888309b | 217 | return (scm_is_false (path) |
04e8fb0a | 218 | ? tail |
7d04d68b | 219 | : scm_append_x (scm_list_2 (scm_string_split (path, sep), tail))); |
04e8fb0a | 220 | } |
1bbd0b84 | 221 | #undef FUNC_NAME |
04e8fb0a MD |
222 | |
223 | ||
06721500 | 224 | /* Initialize the global variable %load-path, given the value of the |
3feedb00 | 225 | SCM_SITE_DIR and SCM_LIBRARY_DIR preprocessor symbols and the |
01cddfc1 | 226 | GUILE_LOAD_PATH environment variable. */ |
0f2d19dd | 227 | void |
06721500 JB |
228 | scm_init_load_path () |
229 | { | |
11c5e0bf | 230 | char *env; |
06721500 | 231 | SCM path = SCM_EOL; |
5b197db8 | 232 | SCM cpath = SCM_EOL; |
06721500 | 233 | |
3feedb00 | 234 | #ifdef SCM_LIBRARY_DIR |
02b84691 AW |
235 | env = getenv ("GUILE_SYSTEM_PATH"); |
236 | if (env && strcmp (env, "") == 0) | |
237 | /* special-case interpret system-path=="" as meaning no system path instead | |
238 | of '("") */ | |
239 | ; | |
240 | else if (env) | |
241 | path = scm_parse_path (scm_from_locale_string (env), path); | |
242 | else | |
243 | path = scm_list_3 (scm_from_locale_string (SCM_SITE_DIR), | |
244 | scm_from_locale_string (SCM_LIBRARY_DIR), | |
245 | scm_from_locale_string (SCM_PKGDATA_DIR)); | |
5b197db8 AW |
246 | |
247 | env = getenv ("GUILE_SYSTEM_COMPILED_PATH"); | |
248 | if (env && strcmp (env, "") == 0) | |
249 | /* like above */ | |
250 | ; | |
251 | else if (env) | |
252 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
253 | else | |
3c997c4b AW |
254 | cpath = scm_cons (scm_from_locale_string (SCM_CCACHE_DIR), cpath); |
255 | ||
3feedb00 | 256 | #endif /* SCM_LIBRARY_DIR */ |
06721500 | 257 | |
3c997c4b | 258 | { |
179fe336 AW |
259 | char cachedir[1024]; |
260 | char *e; | |
261 | #ifdef HAVE_GETPWENT | |
262 | struct passwd *pwd; | |
263 | #endif | |
5b197db8 | 264 | |
6e5c02b8 AW |
265 | #define FALLBACK_DIR \ |
266 | "guile/ccache/" SCM_EFFECTIVE_VERSION "-" SCM_OBJCODE_MACHINE_VERSION_STRING | |
179fe336 AW |
267 | |
268 | if ((e = getenv ("XDG_CACHE_HOME"))) | |
48a0fe4d | 269 | snprintf (cachedir, sizeof(cachedir), "%s/" FALLBACK_DIR, e); |
179fe336 AW |
270 | else if ((e = getenv ("HOME"))) |
271 | snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, e); | |
5b197db8 | 272 | #ifdef HAVE_GETPWENT |
179fe336 AW |
273 | else if ((pwd = getpwuid (getuid ())) && pwd->pw_dir) |
274 | snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, | |
275 | pwd->pw_dir); | |
5b197db8 | 276 | #endif /* HAVE_GETPWENT */ |
179fe336 AW |
277 | else |
278 | cachedir[0] = 0; | |
279 | ||
280 | if (cachedir[0]) | |
281 | *scm_loc_compile_fallback_path = scm_from_locale_string (cachedir); | |
3c997c4b | 282 | } |
06721500 | 283 | |
11c5e0bf MV |
284 | env = getenv ("GUILE_LOAD_PATH"); |
285 | if (env) | |
286 | path = scm_parse_path (scm_from_locale_string (env), path); | |
01cddfc1 | 287 | |
5b197db8 AW |
288 | env = getenv ("GUILE_LOAD_COMPILED_PATH"); |
289 | if (env) | |
290 | cpath = scm_parse_path (scm_from_locale_string (env), cpath); | |
291 | ||
06721500 | 292 | *scm_loc_load_path = path; |
5b197db8 | 293 | *scm_loc_load_compiled_path = cpath; |
06721500 JB |
294 | } |
295 | ||
04e8fb0a | 296 | SCM scm_listofnullstr; |
06721500 | 297 | |
7d04d68b MV |
298 | /* Utility functions for assembling C strings in a buffer. |
299 | */ | |
300 | ||
301 | struct stringbuf { | |
302 | char *buf, *ptr; | |
303 | size_t buf_len; | |
304 | }; | |
305 | ||
306 | static void | |
307 | stringbuf_free (void *data) | |
308 | { | |
309 | struct stringbuf *buf = (struct stringbuf *)data; | |
310 | free (buf->buf); | |
311 | } | |
312 | ||
313 | static void | |
314 | stringbuf_grow (struct stringbuf *buf) | |
315 | { | |
316 | size_t ptroff = buf->ptr - buf->buf; | |
317 | buf->buf_len *= 2; | |
7d04d68b MV |
318 | buf->buf = scm_realloc (buf->buf, buf->buf_len); |
319 | buf->ptr = buf->buf + ptroff; | |
320 | } | |
321 | ||
322 | static void | |
323 | stringbuf_cat_locale_string (struct stringbuf *buf, SCM str) | |
324 | { | |
325 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
326 | size_t len = scm_to_locale_stringbuf (str, buf->ptr, max_len); | |
327 | if (len > max_len) | |
328 | { | |
329 | /* buffer is too small, double its size and try again. | |
330 | */ | |
331 | stringbuf_grow (buf); | |
332 | stringbuf_cat_locale_string (buf, str); | |
333 | } | |
334 | else | |
335 | { | |
336 | /* string fits, terminate it and check for embedded '\0'. | |
337 | */ | |
338 | buf->ptr[len] = '\0'; | |
339 | if (strlen (buf->ptr) != len) | |
340 | scm_misc_error (NULL, | |
341 | "string contains #\\nul character: ~S", | |
342 | scm_list_1 (str)); | |
343 | buf->ptr += len; | |
344 | } | |
345 | } | |
346 | ||
347 | static void | |
348 | stringbuf_cat (struct stringbuf *buf, char *str) | |
349 | { | |
350 | size_t max_len = buf->buf_len - (buf->ptr - buf->buf) - 1; | |
351 | size_t len = strlen (str); | |
352 | if (len > max_len) | |
353 | { | |
354 | /* buffer is too small, double its size and try again. | |
355 | */ | |
356 | stringbuf_grow (buf); | |
357 | stringbuf_cat (buf, str); | |
358 | } | |
359 | else | |
360 | { | |
361 | /* string fits, copy it into buffer. | |
362 | */ | |
363 | strcpy (buf->ptr, str); | |
364 | buf->ptr += len; | |
365 | } | |
366 | } | |
367 | ||
368 | ||
22f4ee48 AW |
369 | static int |
370 | scm_c_string_has_an_ext (char *str, size_t len, SCM extensions) | |
371 | { | |
372 | for (; !scm_is_null (extensions); extensions = SCM_CDR (extensions)) | |
373 | { | |
374 | char *ext; | |
375 | size_t extlen; | |
376 | int match; | |
377 | ext = scm_to_locale_string (SCM_CAR (extensions)); | |
378 | extlen = strlen (ext); | |
379 | match = (len > extlen && str[len - extlen - 1] == '.' | |
380 | && strncmp (str + (len - extlen), ext, extlen) == 0); | |
381 | free (ext); | |
382 | if (match) | |
383 | return 1; | |
384 | } | |
385 | return 0; | |
386 | } | |
387 | ||
04e8fb0a | 388 | /* Search PATH for a directory containing a file named FILENAME. |
06721500 | 389 | The file must be readable, and not a directory. |
26544b96 | 390 | If we find one, return its full filename; otherwise, return #f. |
56384176 JB |
391 | If FILENAME is absolute, return it unchanged. |
392 | If given, EXTENSIONS is a list of strings; for each directory | |
393 | in PATH, we search for FILENAME concatenated with each EXTENSION. */ | |
22f4ee48 AW |
394 | SCM_DEFINE (scm_search_path, "search-path", 2, 2, 0, |
395 | (SCM path, SCM filename, SCM extensions, SCM require_exts), | |
d91788cb MG |
396 | "Search @var{path} for a directory containing a file named\n" |
397 | "@var{filename}. The file must be readable, and not a directory.\n" | |
398 | "If we find one, return its full filename; otherwise, return\n" | |
399 | "@code{#f}. If @var{filename} is absolute, return it unchanged.\n" | |
400 | "If given, @var{extensions} is a list of strings; for each\n" | |
401 | "directory in @var{path}, we search for @var{filename}\n" | |
402 | "concatenated with each @var{extension}.") | |
1bbd0b84 | 403 | #define FUNC_NAME s_scm_search_path |
06721500 | 404 | { |
7d04d68b | 405 | struct stringbuf buf; |
56384176 | 406 | char *filename_chars; |
7d04d68b MV |
407 | size_t filename_len; |
408 | SCM result = SCM_BOOL_F; | |
06721500 | 409 | |
04e8fb0a | 410 | if (SCM_UNBNDP (extensions)) |
56384176 | 411 | extensions = SCM_EOL; |
56384176 | 412 | |
22f4ee48 AW |
413 | if (SCM_UNBNDP (require_exts)) |
414 | require_exts = SCM_BOOL_F; | |
415 | ||
661ae7ab | 416 | scm_dynwind_begin (0); |
7d04d68b MV |
417 | |
418 | filename_chars = scm_to_locale_string (filename); | |
419 | filename_len = strlen (filename_chars); | |
661ae7ab | 420 | scm_dynwind_free (filename_chars); |
06721500 | 421 | |
26544b96 | 422 | /* If FILENAME is absolute, return it unchanged. */ |
2e945bcc SJ |
423 | #ifdef __MINGW32__ |
424 | if (((filename_len >= 1) && | |
425 | (filename_chars[0] == '/' || filename_chars[0] == '\\')) || | |
426 | ((filename_len >= 3) && filename_chars[1] == ':' && | |
427 | ((filename_chars[0] >= 'a' && filename_chars[0] <= 'z') || | |
428 | (filename_chars[0] >= 'A' && filename_chars[0] <= 'Z')) && | |
429 | (filename_chars[2] == '/' || filename_chars[2] == '\\'))) | |
430 | #else | |
56384176 | 431 | if (filename_len >= 1 && filename_chars[0] == '/') |
2e945bcc | 432 | #endif |
7d04d68b | 433 | { |
22f4ee48 AW |
434 | SCM res = filename; |
435 | if (scm_is_true (require_exts) && | |
436 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
437 | extensions)) | |
438 | res = SCM_BOOL_F; | |
439 | ||
661ae7ab | 440 | scm_dynwind_end (); |
22f4ee48 | 441 | return res; |
7d04d68b | 442 | } |
26544b96 | 443 | |
56384176 JB |
444 | /* If FILENAME has an extension, don't try to add EXTENSIONS to it. */ |
445 | { | |
446 | char *endp; | |
447 | ||
448 | for (endp = filename_chars + filename_len - 1; | |
449 | endp >= filename_chars; | |
450 | endp--) | |
451 | { | |
452 | if (*endp == '.') | |
453 | { | |
22f4ee48 AW |
454 | if (scm_is_true (require_exts) && |
455 | !scm_c_string_has_an_ext (filename_chars, filename_len, | |
456 | extensions)) | |
457 | { | |
458 | /* This filename has an extension, but not one of the right | |
459 | ones... */ | |
460 | scm_dynwind_end (); | |
461 | return SCM_BOOL_F; | |
462 | } | |
56384176 JB |
463 | /* This filename already has an extension, so cancel the |
464 | list of extensions. */ | |
465 | extensions = SCM_EOL; | |
466 | break; | |
467 | } | |
2e945bcc SJ |
468 | #ifdef __MINGW32__ |
469 | else if (*endp == '/' || *endp == '\\') | |
470 | #else | |
56384176 | 471 | else if (*endp == '/') |
2e945bcc | 472 | #endif |
56384176 JB |
473 | /* This filename has no extension, so keep the current list |
474 | of extensions. */ | |
475 | break; | |
476 | } | |
477 | } | |
478 | ||
7d04d68b MV |
479 | /* This simplifies the loop below a bit. |
480 | */ | |
d2e53ed6 | 481 | if (scm_is_null (extensions)) |
7d04d68b | 482 | extensions = scm_listofnullstr; |
06721500 | 483 | |
7d04d68b MV |
484 | buf.buf_len = 512; |
485 | buf.buf = scm_malloc (buf.buf_len); | |
661ae7ab | 486 | scm_dynwind_unwind_handler (stringbuf_free, &buf, SCM_F_WIND_EXPLICITLY); |
0a74e31d | 487 | |
7d04d68b MV |
488 | /* Try every path element. |
489 | */ | |
d2e53ed6 | 490 | for (; scm_is_pair (path); path = SCM_CDR (path)) |
7d04d68b MV |
491 | { |
492 | SCM dir = SCM_CAR (path); | |
493 | SCM exts; | |
494 | size_t sans_ext_len; | |
495 | ||
496 | buf.ptr = buf.buf; | |
497 | stringbuf_cat_locale_string (&buf, dir); | |
498 | ||
499 | /* Concatenate the path name and the filename. */ | |
500 | ||
2e945bcc | 501 | #ifdef __MINGW32__ |
5a6d139b | 502 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/') && (buf.ptr[-1] != '\\')) |
2e945bcc | 503 | #else |
5a6d139b | 504 | if ((buf.ptr > buf.buf) && (buf.ptr[-1] != '/')) |
2e945bcc | 505 | #endif |
7d04d68b MV |
506 | stringbuf_cat (&buf, "/"); |
507 | ||
508 | stringbuf_cat (&buf, filename_chars); | |
509 | sans_ext_len = buf.ptr - buf.buf; | |
510 | ||
511 | /* Try every extension. */ | |
d2e53ed6 | 512 | for (exts = extensions; scm_is_pair (exts); exts = SCM_CDR (exts)) |
7d04d68b MV |
513 | { |
514 | SCM ext = SCM_CAR (exts); | |
515 | struct stat mode; | |
516 | ||
517 | buf.ptr = buf.buf + sans_ext_len; | |
518 | stringbuf_cat_locale_string (&buf, ext); | |
519 | ||
520 | /* If the file exists at all, we should return it. If the | |
521 | file is inaccessible, then that's an error. */ | |
522 | ||
7d04d68b MV |
523 | if (stat (buf.buf, &mode) == 0 |
524 | && ! (mode.st_mode & S_IFDIR)) | |
525 | { | |
526 | result = scm_from_locale_string (buf.buf); | |
527 | goto end; | |
528 | } | |
529 | } | |
530 | ||
531 | if (!SCM_NULL_OR_NIL_P (exts)) | |
532 | scm_wrong_type_arg_msg (NULL, 0, extensions, "proper list"); | |
533 | } | |
56384176 | 534 | |
7d04d68b MV |
535 | if (!SCM_NULL_OR_NIL_P (path)) |
536 | scm_wrong_type_arg_msg (NULL, 0, path, "proper list"); | |
56384176 | 537 | |
7d04d68b | 538 | end: |
661ae7ab | 539 | scm_dynwind_end (); |
7d04d68b | 540 | return result; |
06721500 | 541 | } |
1bbd0b84 | 542 | #undef FUNC_NAME |
06721500 JB |
543 | |
544 | ||
04e8fb0a MD |
545 | /* Search %load-path for a directory containing a file named FILENAME. |
546 | The file must be readable, and not a directory. | |
547 | If we find one, return its full filename; otherwise, return #f. | |
548 | If FILENAME is absolute, return it unchanged. */ | |
3b3b36dd | 549 | SCM_DEFINE (scm_sys_search_load_path, "%search-load-path", 1, 0, 0, |
67e8151b MG |
550 | (SCM filename), |
551 | "Search @var{%load-path} for the file named @var{filename},\n" | |
552 | "which must be readable by the current user. If @var{filename}\n" | |
553 | "is found in the list of paths to search or is an absolute\n" | |
554 | "pathname, return its full pathname. Otherwise, return\n" | |
555 | "@code{#f}. Filenames may have any of the optional extensions\n" | |
556 | "in the @code{%load-extensions} list; @code{%search-load-path}\n" | |
557 | "will try each extension automatically.") | |
1bbd0b84 | 558 | #define FUNC_NAME s_scm_sys_search_load_path |
04e8fb0a MD |
559 | { |
560 | SCM path = *scm_loc_load_path; | |
561 | SCM exts = *scm_loc_load_extensions; | |
a6d9e5ab | 562 | SCM_VALIDATE_STRING (1, filename); |
1bbd0b84 | 563 | |
2ade72d7 DH |
564 | if (scm_ilength (path) < 0) |
565 | SCM_MISC_ERROR ("%load-path is not a proper list", SCM_EOL); | |
566 | if (scm_ilength (exts) < 0) | |
567 | SCM_MISC_ERROR ("%load-extension list is not a proper list", SCM_EOL); | |
22f4ee48 | 568 | return scm_search_path (path, filename, exts, SCM_UNDEFINED); |
04e8fb0a | 569 | } |
1bbd0b84 | 570 | #undef FUNC_NAME |
04e8fb0a MD |
571 | |
572 | ||
1d022387 | 573 | static int |
535fb833 | 574 | compiled_is_fresh (SCM full_filename, SCM compiled_filename) |
1d022387 AW |
575 | { |
576 | char *source, *compiled; | |
577 | struct stat stat_source, stat_compiled; | |
578 | int res; | |
579 | ||
580 | source = scm_to_locale_string (full_filename); | |
581 | compiled = scm_to_locale_string (compiled_filename); | |
582 | ||
583 | if (stat (source, &stat_source) == 0 | |
584 | && stat (compiled, &stat_compiled) == 0 | |
535fb833 | 585 | && stat_source.st_mtime == stat_compiled.st_mtime) |
1d022387 AW |
586 | { |
587 | res = 1; | |
588 | } | |
589 | else | |
590 | { | |
591 | scm_puts (";;; note: source file ", scm_current_error_port ()); | |
592 | scm_puts (source, scm_current_error_port ()); | |
6fd367e7 | 593 | scm_puts ("\n;;; newer than compiled ", scm_current_error_port ()); |
1d022387 AW |
594 | scm_puts (compiled, scm_current_error_port ()); |
595 | scm_puts ("\n", scm_current_error_port ()); | |
596 | res = 0; | |
1d022387 | 597 | } |
3c997c4b | 598 | |
1d022387 AW |
599 | free (source); |
600 | free (compiled); | |
601 | return res; | |
602 | } | |
603 | ||
87c595c7 LC |
604 | SCM_KEYWORD (kw_env, "env"); |
605 | ||
1d022387 | 606 | static SCM |
ee001750 | 607 | do_try_autocompile (void *data) |
1d022387 | 608 | { |
3c997c4b AW |
609 | SCM source = PTR2SCM (data); |
610 | SCM comp_mod, compile_file; | |
ee001750 AW |
611 | |
612 | scm_puts (";;; compiling ", scm_current_error_port ()); | |
3c997c4b | 613 | scm_display (source, scm_current_error_port ()); |
ee001750 AW |
614 | scm_newline (scm_current_error_port ()); |
615 | ||
616 | comp_mod = scm_c_resolve_module ("system base compile"); | |
628132c5 AW |
617 | compile_file = scm_module_variable |
618 | (comp_mod, scm_from_locale_symbol ("compile-file")); | |
ee001750 | 619 | |
3c997c4b AW |
620 | if (scm_is_true (compile_file)) |
621 | { | |
87c595c7 LC |
622 | /* Auto-compile in the context of the current module. */ |
623 | SCM res = scm_call_3 (scm_variable_ref (compile_file), source, | |
624 | kw_env, scm_current_module ()); | |
3c997c4b AW |
625 | scm_puts (";;; compiled ", scm_current_error_port ()); |
626 | scm_display (res, scm_current_error_port ()); | |
627 | scm_newline (scm_current_error_port ()); | |
628 | return res; | |
629 | } | |
630 | else | |
631 | { | |
632 | scm_puts (";;; it seems ", scm_current_error_port ()); | |
633 | scm_display (source, scm_current_error_port ()); | |
634 | scm_puts ("\n;;; is part of the compiler; skipping autocompilation\n", | |
635 | scm_current_error_port ()); | |
636 | return SCM_BOOL_F; | |
637 | } | |
ee001750 AW |
638 | } |
639 | ||
640 | static SCM | |
641 | autocompile_catch_handler (void *data, SCM tag, SCM throw_args) | |
642 | { | |
3c997c4b | 643 | SCM source = PTR2SCM (data); |
ee001750 | 644 | scm_puts (";;; WARNING: compilation of ", scm_current_error_port ()); |
3c997c4b | 645 | scm_display (source, scm_current_error_port ()); |
6fd367e7 | 646 | scm_puts (" failed:\n", scm_current_error_port ()); |
ee001750 AW |
647 | scm_puts (";;; key ", scm_current_error_port ()); |
648 | scm_write (tag, scm_current_error_port ()); | |
649 | scm_puts (", throw args ", scm_current_error_port ()); | |
650 | scm_write (throw_args, scm_current_error_port ()); | |
651 | scm_newline (scm_current_error_port ()); | |
1d022387 AW |
652 | return SCM_BOOL_F; |
653 | } | |
654 | ||
9591a2b0 AW |
655 | SCM_DEFINE (scm_sys_warn_autocompilation_enabled, "%warn-autocompilation-enabled", 0, 0, 0, |
656 | (void), "") | |
15058484 | 657 | #define FUNC_NAME s_scm_sys_warn_autocompilation_enabled |
ee001750 AW |
658 | { |
659 | static int message_shown = 0; | |
ee001750 AW |
660 | |
661 | if (!message_shown) | |
662 | { | |
663 | scm_puts (";;; note: autocompilation is enabled, set GUILE_AUTO_COMPILE=0\n" | |
6fd367e7 | 664 | ";;; or pass the --no-autocompile argument to disable.\n", |
ee001750 AW |
665 | scm_current_error_port ()); |
666 | message_shown = 1; | |
667 | } | |
668 | ||
9591a2b0 AW |
669 | return SCM_UNSPECIFIED; |
670 | } | |
15058484 | 671 | #undef FUNC_NAME |
9591a2b0 | 672 | |
9591a2b0 AW |
673 | static SCM |
674 | scm_try_autocompile (SCM source) | |
675 | { | |
676 | if (scm_is_false (*scm_loc_load_should_autocompile)) | |
677 | return SCM_BOOL_F; | |
678 | ||
679 | scm_sys_warn_autocompilation_enabled (); | |
ee001750 AW |
680 | return scm_c_catch (SCM_BOOL_T, |
681 | do_try_autocompile, | |
3c997c4b | 682 | SCM2PTR (source), |
ee001750 | 683 | autocompile_catch_handler, |
3c997c4b | 684 | SCM2PTR (source), |
ee001750 AW |
685 | NULL, NULL); |
686 | } | |
687 | ||
0fb81f95 AW |
688 | SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 1, 0, |
689 | (SCM filename, SCM exception_on_not_found), | |
67e8151b MG |
690 | "Search @var{%load-path} for the file named @var{filename} and\n" |
691 | "load it into the top-level environment. If @var{filename} is a\n" | |
692 | "relative pathname and is not found in the list of search paths,\n" | |
0fb81f95 AW |
693 | "an error is signalled, unless the optional argument\n" |
694 | "@var{exception_on_not_found} is @code{#f}, in which case\n" | |
695 | "@code{#f} is returned instead.") | |
1bbd0b84 | 696 | #define FUNC_NAME s_scm_primitive_load_path |
06721500 | 697 | { |
22f4ee48 | 698 | SCM full_filename, compiled_filename; |
628132c5 | 699 | int compiled_is_fallback = 0; |
26544b96 | 700 | |
0fb81f95 AW |
701 | if (SCM_UNBNDP (exception_on_not_found)) |
702 | exception_on_not_found = SCM_BOOL_T; | |
26544b96 | 703 | |
26544b96 | 704 | full_filename = scm_sys_search_load_path (filename); |
5b197db8 | 705 | compiled_filename = scm_search_path (*scm_loc_load_compiled_path, |
22f4ee48 AW |
706 | filename, |
707 | *scm_loc_load_compiled_extensions, | |
708 | SCM_BOOL_T); | |
3c997c4b | 709 | |
5ea401bf AW |
710 | if (scm_is_false (compiled_filename) |
711 | && scm_is_true (full_filename) | |
3c997c4b AW |
712 | && scm_is_true (*scm_loc_compile_fallback_path) |
713 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
714 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
5ea401bf | 715 | { |
3c997c4b AW |
716 | SCM fallback = scm_string_append |
717 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
718 | full_filename, | |
719 | scm_car (*scm_loc_load_compiled_extensions))); | |
720 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F))) | |
628132c5 AW |
721 | { |
722 | compiled_filename = fallback; | |
723 | compiled_is_fallback = 1; | |
724 | } | |
5ea401bf AW |
725 | } |
726 | ||
22f4ee48 | 727 | if (scm_is_false (full_filename) && scm_is_false (compiled_filename)) |
0fb81f95 AW |
728 | { |
729 | if (scm_is_true (exception_on_not_found)) | |
730 | SCM_MISC_ERROR ("Unable to find file ~S in load path", | |
731 | scm_list_1 (filename)); | |
732 | else | |
733 | return SCM_BOOL_F; | |
734 | } | |
22f4ee48 | 735 | |
1d022387 AW |
736 | if (scm_is_false (full_filename) |
737 | || (scm_is_true (compiled_filename) | |
535fb833 | 738 | && compiled_is_fresh (full_filename, compiled_filename))) |
22f4ee48 AW |
739 | return scm_load_compiled_with_vm (compiled_filename); |
740 | ||
628132c5 AW |
741 | /* Perhaps there was the installed .go that was stale, but our fallback is |
742 | fresh. Let's try that. Duplicating code, but perhaps that's OK. */ | |
743 | ||
744 | if (!compiled_is_fallback | |
745 | && scm_is_true (*scm_loc_compile_fallback_path) | |
746 | && scm_is_pair (*scm_loc_load_compiled_extensions) | |
747 | && scm_is_string (scm_car (*scm_loc_load_compiled_extensions))) | |
748 | { | |
749 | SCM fallback = scm_string_append | |
750 | (scm_list_3 (*scm_loc_compile_fallback_path, | |
751 | full_filename, | |
752 | scm_car (*scm_loc_load_compiled_extensions))); | |
753 | if (scm_is_true (scm_stat (fallback, SCM_BOOL_F)) | |
535fb833 | 754 | && compiled_is_fresh (full_filename, fallback)) |
628132c5 AW |
755 | { |
756 | scm_puts (";;; found fresh local cache at ", scm_current_error_port ()); | |
757 | scm_display (fallback, scm_current_error_port ()); | |
758 | scm_newline (scm_current_error_port ()); | |
5950cc3f | 759 | return scm_load_compiled_with_vm (fallback); |
628132c5 | 760 | } |
3c997c4b | 761 | } |
628132c5 AW |
762 | |
763 | /* Otherwise, we bottom out here. */ | |
22f4ee48 | 764 | { |
628132c5 | 765 | SCM freshly_compiled = scm_try_autocompile (full_filename); |
22f4ee48 | 766 | |
628132c5 AW |
767 | if (scm_is_true (freshly_compiled)) |
768 | return scm_load_compiled_with_vm (freshly_compiled); | |
22f4ee48 | 769 | else |
628132c5 | 770 | return scm_primitive_load (full_filename); |
22f4ee48 | 771 | } |
06721500 | 772 | } |
1bbd0b84 | 773 | #undef FUNC_NAME |
06721500 | 774 | |
c519b272 MV |
775 | SCM |
776 | scm_c_primitive_load_path (const char *filename) | |
777 | { | |
0fb81f95 AW |
778 | return scm_primitive_load_path (scm_from_locale_string (filename), |
779 | SCM_BOOL_T); | |
c519b272 MV |
780 | } |
781 | ||
06721500 | 782 | \f |
e151bee6 | 783 | /* Information about the build environment. */ |
06721500 | 784 | |
d7a22073 LC |
785 | SCM_VARIABLE_INIT (sys_host_type, "%host-type", |
786 | scm_from_locale_string (HOST_TYPE)); | |
787 | ||
788 | ||
e151bee6 JB |
789 | /* Initialize the scheme variable %guile-build-info, based on data |
790 | provided by the Makefile, via libpath.h. */ | |
791 | static void | |
792 | init_build_info () | |
793 | { | |
794 | static struct { char *name; char *value; } info[] = SCM_BUILD_INFO; | |
86d31dfe | 795 | SCM *loc = SCM_VARIABLE_LOC (scm_c_define ("%guile-build-info", SCM_EOL)); |
c014a02e | 796 | unsigned long i; |
e151bee6 JB |
797 | |
798 | for (i = 0; i < (sizeof (info) / sizeof (info[0])); i++) | |
cc95e00a MV |
799 | { |
800 | SCM key = scm_from_locale_symbol (info[i].name); | |
801 | SCM val = scm_from_locale_string (info[i].value); | |
802 | *loc = scm_acons (key, val, *loc); | |
803 | } | |
e151bee6 JB |
804 | } |
805 | ||
e151bee6 | 806 | \f |
0f2d19dd JB |
807 | void |
808 | scm_init_load () | |
0f2d19dd | 809 | { |
1afff620 | 810 | scm_listofnullstr = scm_permanent_object (scm_list_1 (scm_nullstr)); |
86d31dfe | 811 | scm_loc_load_path = SCM_VARIABLE_LOC (scm_c_define ("%load-path", SCM_EOL)); |
26544b96 | 812 | scm_loc_load_extensions |
86d31dfe | 813 | = SCM_VARIABLE_LOC (scm_c_define ("%load-extensions", |
cc95e00a MV |
814 | scm_list_2 (scm_from_locale_string (".scm"), |
815 | scm_nullstr))); | |
5b197db8 AW |
816 | scm_loc_load_compiled_path |
817 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL)); | |
22f4ee48 AW |
818 | scm_loc_load_compiled_extensions |
819 | = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions", | |
820 | scm_list_1 (scm_from_locale_string (".go")))); | |
86d31dfe | 821 | scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F)); |
06721500 | 822 | |
5ea401bf AW |
823 | scm_loc_compile_fallback_path |
824 | = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F)); | |
825 | ||
ee001750 AW |
826 | scm_loc_load_should_autocompile |
827 | = SCM_VARIABLE_LOC (scm_c_define ("%load-should-autocompile", SCM_BOOL_F)); | |
828 | ||
ec3a8ace | 829 | the_reader = scm_make_fluid (); |
8b039053 | 830 | scm_fluid_set_x (the_reader, SCM_BOOL_F); |
ec3a8ace NJ |
831 | scm_c_define("current-reader", the_reader); |
832 | ||
e151bee6 JB |
833 | init_build_info (); |
834 | ||
a0599745 | 835 | #include "libguile/load.x" |
0f2d19dd | 836 | } |
89e00824 ML |
837 | |
838 | /* | |
839 | Local Variables: | |
840 | c-file-style: "gnu" | |
841 | End: | |
842 | */ |