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* load.c (scm_search_path): Don't try extensions which already are

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present at the end of the filename.
(scm_init_load): Check .scm first. (Thanks to Keisuke Nishida.)
This commit is contained in:
Mikael Djurfeldt 1999-08-29 14:22:29 +00:00
parent 81123e6d05
commit 0a74e31d21
1 changed files with 46 additions and 36 deletions
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82
libguile/load.c
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@ -221,10 +221,11 @@ scm_search_path (path, filename, extensions)
SCM filename;
SCM extensions;
{
char *buf;
char *buf, *endp;
int filename_len;
size_t max_path_len;
size_t max_ext_len;
SCM result = SCM_BOOL_F;
SCM_ASSERT (scm_ilength (path) >= 0, path, SCM_ARG1, s_search_path);
SCM_ASSERT (SCM_NIMP (filename) && SCM_ROSTRINGP (filename), filename,
@ -252,8 +253,8 @@ scm_search_path (path, filename, extensions)
SCM_ASSERT (SCM_NIMP (elt) && SCM_ROSTRINGP (elt), elt,
"path is not a list of strings",
s_search_path);
if (SCM_LENGTH (elt) > max_path_len)
max_path_len = SCM_LENGTH (elt);
if (SCM_ROLENGTH (elt) > max_path_len)
max_path_len = SCM_ROLENGTH (elt);
}
}
@ -269,11 +270,22 @@ scm_search_path (path, filename, extensions)
SCM_ASSERT (SCM_NIMP (elt) && SCM_ROSTRINGP (elt), elt,
"extension list is not a list of strings",
s_search_path);
if (SCM_LENGTH (elt) > max_ext_len)
max_ext_len = SCM_LENGTH (elt);
if (SCM_ROLENGTH (elt) > max_ext_len)
max_ext_len = SCM_ROLENGTH (elt);
}
}
/* Remove the same extension that FILENAME already has. */
for (endp = SCM_ROCHARS (filename) + filename_len - 1;
endp > SCM_ROCHARS (filename) && *endp != '/'; endp--)
if (*endp == '.')
{
extensions = scm_delete (scm_makfromstr (endp, SCM_ROCHARS (filename)
+ filename_len - endp, 0),
extensions);
break;
}
SCM_DEFER_INTS;
buf = scm_must_malloc (max_path_len + 1 + filename_len + max_ext_len + 1,
@ -283,45 +295,43 @@ scm_search_path (path, filename, extensions)
list of strings. */
for (; SCM_NIMP (path); path = SCM_CDR (path))
{
SCM path_elt = SCM_CAR (path), exts;
int len;
SCM dir = SCM_CAR (path), exts;
/* Concatenate the path name and the filename. */
len = SCM_ROLENGTH (dir);
memcpy (buf, SCM_ROCHARS (dir), len);
if (len >= 1 && buf[len - 1] != '/')
buf[len++] = '/';
memcpy (buf + len, SCM_ROCHARS (filename), filename_len);
endp = buf + len + filename_len;
/* Try every extension. At this point, we know it's a proper
list of strings. */
for (exts = extensions; SCM_NIMP (exts); exts = SCM_CDR (exts))
{
SCM ext_elt = SCM_CAR (exts);
int i;
SCM ext = SCM_CAR (exts);
struct stat mode;
/* Concatenate the path name, the filename, and the extension. */
i = SCM_ROLENGTH (path_elt);
memcpy (buf, SCM_ROCHARS (path_elt), i);
if (i >= 1 && buf[i - 1] != '/')
buf[i++] = '/';
memcpy (buf + i, SCM_ROCHARS (filename), filename_len);
i += filename_len;
memcpy (buf + i, SCM_ROCHARS (ext_elt), SCM_LENGTH (ext_elt));
i += SCM_LENGTH (ext_elt);
buf[i] = '\0';
/* Concatenate the extension. */
len = SCM_ROLENGTH (ext);
memcpy (endp, SCM_ROCHARS (ext), len);
*(endp + len) = '\0';
{
struct stat mode;
if (stat (buf, &mode) >= 0
&& ! (mode.st_mode & S_IFDIR)
&& access (buf, R_OK) == 0)
{
SCM result = scm_makfromstr (buf, i, 0);
scm_must_free (buf);
SCM_ALLOW_INTS;
return result;
}
}
if (stat (buf, &mode) == 0
&& ! (mode.st_mode & S_IFDIR)
&& access (buf, R_OK) == 0)
{
result = scm_makfromstr (buf, endp + len - buf, 0);
goto end;
}
}
}
end:
scm_must_free (buf);
SCM_ALLOW_INTS;
return SCM_BOOL_F;
return result;
}
@ -363,7 +373,7 @@ scm_primitive_load_path (filename)
if (SCM_FALSEP (full_filename))
{
int absolute = (SCM_LENGTH (filename) >= 1
int absolute = (SCM_ROLENGTH (filename) >= 1
&& SCM_ROCHARS (filename)[0] == '/');
scm_misc_error (s_primitive_load_path,
(absolute
@ -421,8 +431,8 @@ scm_init_load ()
scm_loc_load_path = SCM_CDRLOC (scm_sysintern ("%load-path", SCM_EOL));
scm_loc_load_extensions
= SCM_CDRLOC (scm_sysintern ("%load-extensions",
scm_listify (scm_makfrom0str (""),
scm_makfrom0str (".scm"),
scm_listify (scm_makfrom0str (".scm"),
scm_makfrom0str (""),
SCM_UNDEFINED)));
scm_loc_load_hook = SCM_CDRLOC (scm_sysintern ("%load-hook", SCM_BOOL_F));