-/* Copyright (C) 1995,1996,1998,1999,2000,2001, 2004, 2006 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1998,1999,2000,2001, 2004, 2006, 2009 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
*/
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif /* HAVE_PWD_H */
+
#ifndef R_OK
#define R_OK 4
#endif
#define FUNC_NAME s_scm_primitive_load
{
SCM hook = *scm_loc_load_hook;
+ char *encoding;
SCM_VALIDATE_STRING (1, filename);
if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook)))
SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f",
SCM port = scm_open_file (filename, scm_from_locale_string ("r"));
scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE);
scm_i_dynwind_current_load_port (port);
-
+ encoding = scm_scan_for_encoding (port);
+ if (encoding)
+ {
+ scm_i_set_port_encoding_x (port, encoding);
+ free (encoding);
+ }
+ else
+ /* The file has no encoding declaraed. We'll presume Latin-1. */
+ scm_i_set_port_encoding_x (port, NULL);
while (1)
{
SCM reader, form;
/* List of extensions we try adding to the filenames. */
static SCM *scm_loc_load_extensions;
-/* Like %load-extensions, but for compiled files. */
+/* Like %load-path and %load-extensions, but for compiled files. */
+static SCM *scm_loc_load_compiled_path;
static SCM *scm_loc_load_compiled_extensions;
+/* Whether we should try to auto-compile. */
+static SCM *scm_loc_load_should_autocompile;
+
+/* The fallback path for autocompilation */
+static SCM *scm_loc_compile_fallback_path;
SCM_DEFINE (scm_parse_path, "parse-path", 1, 1, 0,
(SCM path, SCM tail),
{
char *env;
SCM path = SCM_EOL;
+ SCM cpath = SCM_EOL;
#ifdef SCM_LIBRARY_DIR
env = getenv ("GUILE_SYSTEM_PATH");
path = scm_list_3 (scm_from_locale_string (SCM_SITE_DIR),
scm_from_locale_string (SCM_LIBRARY_DIR),
scm_from_locale_string (SCM_PKGDATA_DIR));
+
+ env = getenv ("GUILE_SYSTEM_COMPILED_PATH");
+ if (env && strcmp (env, "") == 0)
+ /* like above */
+ ;
+ else if (env)
+ cpath = scm_parse_path (scm_from_locale_string (env), cpath);
+ else
+ cpath = scm_cons (scm_from_locale_string (SCM_CCACHE_DIR), cpath);
+
#endif /* SCM_LIBRARY_DIR */
+ {
+ char cachedir[1024];
+ char *e;
+#ifdef HAVE_GETPWENT
+ struct passwd *pwd;
+#endif
+
+#define FALLBACK_DIR \
+ "guile/ccache/" SCM_EFFECTIVE_VERSION "-" SCM_OBJCODE_MACHINE_VERSION_STRING
+
+ if ((e = getenv ("XDG_CACHE_HOME")))
+ snprintf (cachedir, sizeof(cachedir), "%s/" FALLBACK_DIR, e);
+ else if ((e = getenv ("HOME")))
+ snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR, e);
+#ifdef HAVE_GETPWENT
+ else if ((pwd = getpwuid (getuid ())) && pwd->pw_dir)
+ snprintf (cachedir, sizeof(cachedir), "%s/.cache/" FALLBACK_DIR,
+ pwd->pw_dir);
+#endif /* HAVE_GETPWENT */
+ else
+ cachedir[0] = 0;
+
+ if (cachedir[0])
+ *scm_loc_compile_fallback_path = scm_from_locale_string (cachedir);
+ }
+
env = getenv ("GUILE_LOAD_PATH");
if (env)
path = scm_parse_path (scm_from_locale_string (env), path);
+ env = getenv ("GUILE_LOAD_COMPILED_PATH");
+ if (env)
+ cpath = scm_parse_path (scm_from_locale_string (env), cpath);
+
*scm_loc_load_path = path;
+ *scm_loc_load_compiled_path = cpath;
}
SCM scm_listofnullstr;
#undef FUNC_NAME
-SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 0, 0,
- (SCM filename),
+static int
+compiled_is_fresh (SCM full_filename, SCM compiled_filename)
+{
+ char *source, *compiled;
+ struct stat stat_source, stat_compiled;
+ int res;
+
+ source = scm_to_locale_string (full_filename);
+ compiled = scm_to_locale_string (compiled_filename);
+
+ if (stat (source, &stat_source) == 0
+ && stat (compiled, &stat_compiled) == 0
+ && stat_source.st_mtime == stat_compiled.st_mtime)
+ {
+ res = 1;
+ }
+ else
+ {
+ scm_puts (";;; note: source file ", scm_current_error_port ());
+ scm_puts (source, scm_current_error_port ());
+ scm_puts ("\n;;; newer than compiled ", scm_current_error_port ());
+ scm_puts (compiled, scm_current_error_port ());
+ scm_puts ("\n", scm_current_error_port ());
+ res = 0;
+ }
+
+ free (source);
+ free (compiled);
+ return res;
+}
+
+static SCM
+do_try_autocompile (void *data)
+{
+ SCM source = PTR2SCM (data);
+ SCM comp_mod, compile_file;
+
+ scm_puts (";;; compiling ", scm_current_error_port ());
+ scm_display (source, scm_current_error_port ());
+ scm_newline (scm_current_error_port ());
+
+ comp_mod = scm_c_resolve_module ("system base compile");
+ compile_file = scm_module_variable
+ (comp_mod, scm_from_locale_symbol ("compile-file"));
+
+ if (scm_is_true (compile_file))
+ {
+ SCM res = scm_call_1 (scm_variable_ref (compile_file), source);
+ scm_puts (";;; compiled ", scm_current_error_port ());
+ scm_display (res, scm_current_error_port ());
+ scm_newline (scm_current_error_port ());
+ return res;
+ }
+ else
+ {
+ scm_puts (";;; it seems ", scm_current_error_port ());
+ scm_display (source, scm_current_error_port ());
+ scm_puts ("\n;;; is part of the compiler; skipping autocompilation\n",
+ scm_current_error_port ());
+ return SCM_BOOL_F;
+ }
+}
+
+static SCM
+autocompile_catch_handler (void *data, SCM tag, SCM throw_args)
+{
+ SCM source = PTR2SCM (data);
+ scm_puts (";;; WARNING: compilation of ", scm_current_error_port ());
+ scm_display (source, scm_current_error_port ());
+ scm_puts (" failed:\n", scm_current_error_port ());
+ scm_puts (";;; key ", scm_current_error_port ());
+ scm_write (tag, scm_current_error_port ());
+ scm_puts (", throw args ", scm_current_error_port ());
+ scm_write (throw_args, scm_current_error_port ());
+ scm_newline (scm_current_error_port ());
+ return SCM_BOOL_F;
+}
+
+SCM_DEFINE (scm_sys_warn_autocompilation_enabled, "%warn-autocompilation-enabled", 0, 0, 0,
+ (void), "")
+{
+ static int message_shown = 0;
+
+ if (!message_shown)
+ {
+ scm_puts (";;; note: autocompilation is enabled, set GUILE_AUTO_COMPILE=0\n"
+ ";;; or pass the --no-autocompile argument to disable.\n",
+ scm_current_error_port ());
+ message_shown = 1;
+ }
+
+ return SCM_UNSPECIFIED;
+}
+
+
+static SCM
+scm_try_autocompile (SCM source)
+{
+ if (scm_is_false (*scm_loc_load_should_autocompile))
+ return SCM_BOOL_F;
+
+ scm_sys_warn_autocompilation_enabled ();
+ return scm_c_catch (SCM_BOOL_T,
+ do_try_autocompile,
+ SCM2PTR (source),
+ autocompile_catch_handler,
+ SCM2PTR (source),
+ NULL, NULL);
+}
+
+SCM_DEFINE (scm_primitive_load_path, "primitive-load-path", 1, 1, 0,
+ (SCM filename, SCM exception_on_not_found),
"Search @var{%load-path} for the file named @var{filename} and\n"
"load it into the top-level environment. If @var{filename} is a\n"
"relative pathname and is not found in the list of search paths,\n"
- "an error is signalled.")
+ "an error is signalled, unless the optional argument\n"
+ "@var{exception_on_not_found} is @code{#f}, in which case\n"
+ "@code{#f} is returned instead.")
#define FUNC_NAME s_scm_primitive_load_path
{
SCM full_filename, compiled_filename;
+ int compiled_is_fallback = 0;
+
+ if (SCM_UNBNDP (exception_on_not_found))
+ exception_on_not_found = SCM_BOOL_T;
full_filename = scm_sys_search_load_path (filename);
- compiled_filename = scm_search_path (*scm_loc_load_path,
+ compiled_filename = scm_search_path (*scm_loc_load_compiled_path,
filename,
*scm_loc_load_compiled_extensions,
SCM_BOOL_T);
-
+
+ if (scm_is_false (compiled_filename)
+ && scm_is_true (full_filename)
+ && scm_is_true (*scm_loc_compile_fallback_path)
+ && scm_is_pair (*scm_loc_load_compiled_extensions)
+ && scm_is_string (scm_car (*scm_loc_load_compiled_extensions)))
+ {
+ SCM fallback = scm_string_append
+ (scm_list_3 (*scm_loc_compile_fallback_path,
+ full_filename,
+ scm_car (*scm_loc_load_compiled_extensions)));
+ if (scm_is_true (scm_stat (fallback, SCM_BOOL_F)))
+ {
+ compiled_filename = fallback;
+ compiled_is_fallback = 1;
+ }
+ }
+
if (scm_is_false (full_filename) && scm_is_false (compiled_filename))
- SCM_MISC_ERROR ("Unable to find file ~S in load path",
- scm_list_1 (filename));
-
- if (scm_is_false (compiled_filename))
- return scm_primitive_load (full_filename);
+ {
+ if (scm_is_true (exception_on_not_found))
+ SCM_MISC_ERROR ("Unable to find file ~S in load path",
+ scm_list_1 (filename));
+ else
+ return SCM_BOOL_F;
+ }
- if (scm_is_false (full_filename))
+ if (scm_is_false (full_filename)
+ || (scm_is_true (compiled_filename)
+ && compiled_is_fresh (full_filename, compiled_filename)))
return scm_load_compiled_with_vm (compiled_filename);
+ /* Perhaps there was the installed .go that was stale, but our fallback is
+ fresh. Let's try that. Duplicating code, but perhaps that's OK. */
+
+ if (!compiled_is_fallback
+ && scm_is_true (*scm_loc_compile_fallback_path)
+ && scm_is_pair (*scm_loc_load_compiled_extensions)
+ && scm_is_string (scm_car (*scm_loc_load_compiled_extensions)))
+ {
+ SCM fallback = scm_string_append
+ (scm_list_3 (*scm_loc_compile_fallback_path,
+ full_filename,
+ scm_car (*scm_loc_load_compiled_extensions)));
+ if (scm_is_true (scm_stat (fallback, SCM_BOOL_F))
+ && compiled_is_fresh (full_filename, fallback))
+ {
+ scm_puts (";;; found fresh local cache at ", scm_current_error_port ());
+ scm_display (fallback, scm_current_error_port ());
+ scm_newline (scm_current_error_port ());
+ return scm_load_compiled_with_vm (compiled_filename);
+ }
+ }
+
+ /* Otherwise, we bottom out here. */
{
- char *source, *compiled;
- struct stat stat_source, stat_compiled;
+ SCM freshly_compiled = scm_try_autocompile (full_filename);
- source = scm_to_locale_string (full_filename);
- compiled = scm_to_locale_string (compiled_filename);
-
- if (stat (source, &stat_source) == 0
- && stat (compiled, &stat_compiled) == 0
- && stat_source.st_mtime <= stat_compiled.st_mtime)
- {
- free (source);
- free (compiled);
- return scm_load_compiled_with_vm (compiled_filename);
- }
+ if (scm_is_true (freshly_compiled))
+ return scm_load_compiled_with_vm (freshly_compiled);
else
- {
- scm_puts (";;; note: source file ", scm_current_error_port ());
- scm_puts (source, scm_current_error_port ());
- scm_puts (" newer than compiled ", scm_current_error_port ());
- scm_puts (compiled, scm_current_error_port ());
- scm_puts ("\n", scm_current_error_port ());
- free (source);
- free (compiled);
- return scm_primitive_load (full_filename);
- }
+ return scm_primitive_load (full_filename);
}
}
#undef FUNC_NAME
SCM
scm_c_primitive_load_path (const char *filename)
{
- return scm_primitive_load_path (scm_from_locale_string (filename));
+ return scm_primitive_load_path (scm_from_locale_string (filename),
+ SCM_BOOL_T);
}
\f
= SCM_VARIABLE_LOC (scm_c_define ("%load-extensions",
scm_list_2 (scm_from_locale_string (".scm"),
scm_nullstr)));
+ scm_loc_load_compiled_path
+ = SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-path", SCM_EOL));
scm_loc_load_compiled_extensions
= SCM_VARIABLE_LOC (scm_c_define ("%load-compiled-extensions",
scm_list_1 (scm_from_locale_string (".go"))));
scm_loc_load_hook = SCM_VARIABLE_LOC (scm_c_define ("%load-hook", SCM_BOOL_F));
+ scm_loc_compile_fallback_path
+ = SCM_VARIABLE_LOC (scm_c_define ("%compile-fallback-path", SCM_BOOL_F));
+
+ scm_loc_load_should_autocompile
+ = SCM_VARIABLE_LOC (scm_c_define ("%load-should-autocompile", SCM_BOOL_F));
+
the_reader = scm_make_fluid ();
the_reader_fluid_num = SCM_FLUID_NUM (the_reader);
SCM_FAST_FLUID_SET_X (the_reader_fluid_num, SCM_BOOL_F);
HCoop / bpt / guile.git / blobdiff