#include "opaque.h"
#include "sysfile.h"
#include "sysdir.h"
+#include "systime.h"
+#include "sysdep.h"
+#include "syspwd.h"
Lisp_Object Vcompletion_ignored_extensions;
Lisp_Object Qdirectory_files;
if FILES-ONLY is nil (the default) then both files and subdirectories will
be returned.
*/
- (dirname, full, match, nosort, files_only))
+ (directory, full, match, nosort, files_only))
{
/* This function can GC */
DIR *d;
Lisp_Object list = Qnil;
- Bytecount dirnamelen;
+ Bytecount directorylen;
Lisp_Object handler;
struct re_pattern_buffer *bufp = NULL;
int speccount = specpdl_depth ();
char *statbuf, *statbuf_tail;
struct gcpro gcpro1, gcpro2;
- GCPRO2 (dirname, list);
+ GCPRO2 (directory, list);
/* If the file name has special constructs in it,
call the corresponding file handler. */
- handler = Ffind_file_name_handler (dirname, Qdirectory_files);
+ handler = Ffind_file_name_handler (directory, Qdirectory_files);
if (!NILP (handler))
{
UNGCPRO;
if (!NILP (files_only))
- return call6 (handler, Qdirectory_files, dirname, full, match, nosort,
- files_only);
+ return call6 (handler, Qdirectory_files, directory, full, match,
+ nosort, files_only);
else
- return call5 (handler, Qdirectory_files, dirname, full, match,
+ return call5 (handler, Qdirectory_files, directory, full, match,
nosort);
}
/* #### why do we do Fexpand_file_name after file handlers here,
but earlier everywhere else? */
- dirname = Fexpand_file_name (dirname, Qnil);
- dirname = Ffile_name_as_directory (dirname);
- dirnamelen = XSTRING_LENGTH (dirname);
+ directory = Fexpand_file_name (directory, Qnil);
+ directory = Ffile_name_as_directory (directory);
+ directorylen = XSTRING_LENGTH (directory);
- statbuf = (char *)alloca (dirnamelen + MAXNAMLEN + 1);
- memcpy (statbuf, XSTRING_DATA (dirname), dirnamelen);
- statbuf_tail = statbuf + dirnamelen;
+ statbuf = (char *)alloca (directorylen + MAXNAMLEN + 1);
+ memcpy (statbuf, XSTRING_DATA (directory), directorylen);
+ statbuf_tail = statbuf + directorylen;
/* XEmacs: this should come after Ffile_name_as_directory() to avoid
potential regexp cache smashage. It comes before the opendir()
which might compile a new regexp until we're done with the loop! */
/* Do this opendir after anything which might signal an error.
- NOTE: the above comment is old; previosly, there was no
+ NOTE: the above comment is old; previously, there was no
unwind-protection in case of error, but now there is. */
- d = opendir ((char *) XSTRING_DATA (dirname));
+ d = opendir ((char *) XSTRING_DATA (directory));
if (!d)
- report_file_error ("Opening directory", list1 (dirname));
+ report_file_error ("Opening directory", list1 (directory));
record_unwind_protect (close_directory_unwind, make_opaque_ptr ((void *)d));
while (1)
{
DIRENTRY *dp = readdir (d);
- Lisp_Object name;
int len;
if (!dp)
{
if (!NILP (files_only))
{
- int dir_p;
struct stat st;
- char *cur_statbuf = statbuf;
- char *cur_statbuf_tail = statbuf_tail;
-
- /* #### I don't think the code under `if' is necessary
- anymore. The crashes in this function were reported
- because MAXNAMLEN was used to remember the *whole*
- statbuf, instead of using MAXPATHLEN. This should be
- tested after 21.0 is released. */
-
- /* We normally use the buffer created by alloca.
- However, if the file name we get too big, we'll use a
- malloced buffer, and free it. It is undefined how
- stat() will react to this, but we avoid a buffer
- overrun. */
- if (len > MAXNAMLEN)
- {
- cur_statbuf = (char *)xmalloc (dirnamelen + len + 1);
- memcpy (cur_statbuf, statbuf, dirnamelen);
- cur_statbuf_tail = cur_statbuf + dirnamelen;
- }
- memcpy (cur_statbuf_tail, dp->d_name, len);
- cur_statbuf_tail[len] = 0;
+ int dir_p = 0;
- if (stat (cur_statbuf, &st) < 0)
- dir_p = 0;
- else
- dir_p = ((st.st_mode & S_IFMT) == S_IFDIR);
+ memcpy (statbuf_tail, dp->d_name, len);
+ statbuf_tail[len] = 0;
- if (cur_statbuf != statbuf)
- xfree (cur_statbuf);
+ if (stat (statbuf, &st) == 0
+ && (st.st_mode & S_IFMT) == S_IFDIR)
+ dir_p = 1;
if (EQ (files_only, Qt) && dir_p)
continue;
continue;
}
- if (!NILP (full))
- name = concat2 (dirname, make_ext_string ((Bufbyte *)dp->d_name,
- len, FORMAT_FILENAME));
- else
- name = make_ext_string ((Bufbyte *)dp->d_name,
- len, FORMAT_FILENAME);
+ {
+ Lisp_Object name =
+ make_string ((Bufbyte *)dp->d_name, len);
+ if (!NILP (full))
+ name = concat2 (directory, name);
- list = Fcons (name, list);
+ list = Fcons (name, list);
+ }
}
}
unbind_to (speccount, Qnil); /* This will close the dir */
- if (!NILP (nosort))
- RETURN_UNGCPRO (list);
- else
- RETURN_UNGCPRO (Fsort (Fnreverse (list), Qstring_lessp));
+ if (NILP (nosort))
+ list = Fsort (Fnreverse (list), Qstring_lessp);
+
+ RETURN_UNGCPRO (list);
}
\f
static Lisp_Object file_name_completion (Lisp_Object file,
- Lisp_Object dirname,
+ Lisp_Object directory,
int all_flag, int ver_flag);
DEFUN ("file-name-completion", Ffile_name_completion, 2, 2, 0, /*
-Complete file name FILE in directory DIR.
-Returns the longest string common to all filenames in DIR
+Complete file name FILE in directory DIRECTORY.
+Returns the longest string common to all filenames in DIRECTORY
that start with FILE.
If there is only one and FILE matches it exactly, returns t.
-Returns nil if DIR contains no name starting with FILE.
+Returns nil if DIRECTORY contains no name starting with FILE.
Filenames which end with any member of `completion-ignored-extensions'
are not considered as possible completions for FILE unless there is no
other possible completion. `completion-ignored-extensions' is not applied
to the names of directories.
*/
- (file, dirname))
+ (file, directory))
{
/* This function can GC. GC checked 1996.04.06. */
Lisp_Object handler;
/* If the directory name has special constructs in it,
call the corresponding file handler. */
- handler = Ffind_file_name_handler (dirname, Qfile_name_completion);
+ handler = Ffind_file_name_handler (directory, Qfile_name_completion);
if (!NILP (handler))
- return call3 (handler, Qfile_name_completion, file, dirname);
+ return call3 (handler, Qfile_name_completion, file, directory);
/* If the file name has special constructs in it,
call the corresponding file handler. */
handler = Ffind_file_name_handler (file, Qfile_name_completion);
if (!NILP (handler))
- return call3 (handler, Qfile_name_completion, file, dirname);
+ return call3 (handler, Qfile_name_completion, file, directory);
- return file_name_completion (file, dirname, 0, 0);
+ return file_name_completion (file, directory, 0, 0);
}
DEFUN ("file-name-all-completions", Ffile_name_all_completions, 2, 2, 0, /*
-Return a list of all completions of file name FILE in directory DIR.
-These are all file names in directory DIR which begin with FILE.
+Return a list of all completions of file name FILE in directory DIRECTORY.
+These are all file names in directory DIRECTORY which begin with FILE.
-Filenames which end with any member of `completion-ignored-extensions'
+File names which end with any member of `completion-ignored-extensions'
are not considered as possible completions for FILE unless there is no
other possible completion. `completion-ignored-extensions' is not applied
to the names of directories.
*/
- (file, dirname))
+ (file, directory))
{
/* This function can GC. GC checked 1997.06.04. */
Lisp_Object handler;
struct gcpro gcpro1;
- GCPRO1 (dirname);
- dirname = Fexpand_file_name (dirname, Qnil);
+ GCPRO1 (directory);
+ directory = Fexpand_file_name (directory, Qnil);
/* If the file name has special constructs in it,
call the corresponding file handler. */
- handler = Ffind_file_name_handler (dirname, Qfile_name_all_completions);
+ handler = Ffind_file_name_handler (directory, Qfile_name_all_completions);
UNGCPRO;
if (!NILP (handler))
return call3 (handler, Qfile_name_all_completions, file,
- dirname);
+ directory);
- return file_name_completion (file, dirname, 1, 0);
+ return file_name_completion (file, directory, 1, 0);
}
static int
-file_name_completion_stat (Lisp_Object dirname, DIRENTRY *dp,
+file_name_completion_stat (Lisp_Object directory, DIRENTRY *dp,
struct stat *st_addr)
{
Bytecount len = NAMLEN (dp);
- Bytecount pos = XSTRING_LENGTH (dirname);
+ Bytecount pos = XSTRING_LENGTH (directory);
int value;
char *fullname = (char *) alloca (len + pos + 2);
- memcpy (fullname, XSTRING_DATA (dirname), pos);
+ memcpy (fullname, XSTRING_DATA (directory), pos);
if (!IS_DIRECTORY_SEP (fullname[pos - 1]))
fullname[pos++] = DIRECTORY_SEP;
DIR *d;
Lisp_Object obj = XCAR (locative);
- if (NILP (obj))
- return Qnil;
- d = (DIR *)get_opaque_ptr (obj);
- closedir (d);
- free_opaque_ptr (obj);
+ if (!NILP (obj))
+ {
+ d = (DIR *)get_opaque_ptr (obj);
+ closedir (d);
+ free_opaque_ptr (obj);
+ }
free_cons (XCONS (locative));
return Qnil;
}
static Lisp_Object
-file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag,
+file_name_completion (Lisp_Object file, Lisp_Object directory, int all_flag,
int ver_flag)
{
/* This function can GC */
Lisp_Object locative;
struct gcpro gcpro1, gcpro2, gcpro3;
- GCPRO3 (file, dirname, bestmatch);
+ GCPRO3 (file, directory, bestmatch);
CHECK_STRING (file);
#ifdef FILE_SYSTEM_CASE
file = FILE_SYSTEM_CASE (file);
#endif
- dirname = Fexpand_file_name (dirname, Qnil);
+ directory = Fexpand_file_name (directory, Qnil);
file_name_length = XSTRING_CHAR_LENGTH (file);
/* With passcount = 0, ignore files that end in an ignored extension.
for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++)
{
- d = opendir ((char *) XSTRING_DATA (Fdirectory_file_name (dirname)));
+ d = opendir ((char *) XSTRING_DATA (Fdirectory_file_name (directory)));
if (!d)
- report_file_error ("Opening directory", list1 (dirname));
+ report_file_error ("Opening directory", list1 (directory));
XCAR (locative) = make_opaque_ptr ((void *)d);
/* Loop reading blocks */
dp = readdir (d);
if (!dp) break;
- /* #### This is a bad idea, because d_name can contain
- control characters, which can make XEmacs crash. This
- should be handled properly with FORMAT_FILENAME. */
+ /* Cast to Bufbyte* is OK, as readdir() Mule-encapsulates. */
d_name = (Bufbyte *) dp->d_name;
len = NAMLEN (dp);
cclen = bytecount_to_charcount (d_name, len);
|| 0 <= scmp (d_name, XSTRING_DATA (file), file_name_length))
continue;
- if (file_name_completion_stat (dirname, dp, &st) < 0)
+ if (file_name_completion_stat (directory, dp, &st) < 0)
continue;
directoryp = ((st.st_mode & S_IFMT) == S_IFDIR);
}
}
- /* If this dirname all matches,
+ /* If this directory all matches,
see if implicit following slash does too. */
if (directoryp
&& compare == matchsize
}
\f
+
+/* The *pwent() functions do not exist on NT */
+#ifndef WINDOWSNT
+
+static Lisp_Object user_name_completion (Lisp_Object user,
+ int all_flag,
+ int *uniq);
+
+DEFUN ("user-name-completion", Fuser_name_completion, 1, 1, 0, /*
+Complete user name USER.
+
+Returns the longest string common to all user names that start
+with USER. If there is only one and USER matches it exactly,
+returns t. Returns nil if there is no user name starting with USER.
+*/
+ (user))
+{
+ return user_name_completion (user, 0, NULL);
+}
+
+DEFUN ("user-name-completion-1", Fuser_name_completion_1, 1, 1, 0, /*
+Complete user name USER.
+
+This function is identical to `user-name-completion', except that
+the cons of the completion and an indication of whether the
+completion was unique is returned.
+
+The car of the returned value is the longest string common to all
+user names that start with USER. If there is only one and USER
+matches it exactly, the car is t. The car is nil if there is no
+user name starting with USER. The cdr of the result is non-nil
+if and only if the completion returned in the car was unique.
+*/
+ (user))
+{
+ int uniq;
+ Lisp_Object completed = user_name_completion (user, 0, &uniq);
+ return Fcons (completed, uniq ? Qt : Qnil);
+}
+
+DEFUN ("user-name-all-completions", Fuser_name_all_completions, 1, 1, 0, /*
+Return a list of all completions of user name USER.
+These are all user names which begin with USER.
+*/
+ (user))
+{
+ return user_name_completion (user, 1, NULL);
+}
+
+struct user_name
+{
+ Bufbyte *ptr;
+ size_t len;
+};
+
+struct user_cache
+{
+ struct user_name *user_names;
+ int length;
+ int size;
+ EMACS_TIME last_rebuild_time;
+};
+static struct user_cache user_cache;
+
+static void
+free_user_cache (struct user_cache *cache)
+{
+ int i;
+ for (i = 0; i < cache->length; i++)
+ xfree (cache->user_names[i].ptr);
+ xfree (cache->user_names);
+ xzero (*cache);
+}
+
+static Lisp_Object
+user_name_completion_unwind (Lisp_Object cache_incomplete_p)
+{
+ endpwent ();
+ speed_up_interrupts ();
+
+ if (! NILP (XCAR (cache_incomplete_p)))
+ free_user_cache (&user_cache);
+
+ free_cons (XCONS (cache_incomplete_p));
+
+ return Qnil;
+}
+
+#define USER_CACHE_TTL (24*60*60) /* Time to live: 1 day, in seconds */
+
+static Lisp_Object
+user_name_completion (Lisp_Object user, int all_flag, int *uniq)
+{
+ /* This function can GC */
+ int matchcount = 0;
+ Lisp_Object bestmatch = Qnil;
+ Charcount bestmatchsize = 0;
+ Charcount user_name_length;
+ EMACS_TIME t;
+ int i;
+ struct gcpro gcpro1, gcpro2;
+
+ GCPRO2 (user, bestmatch);
+
+ CHECK_STRING (user);
+
+ user_name_length = XSTRING_CHAR_LENGTH (user);
+
+ /* Cache user name lookups because it tends to be quite slow.
+ * Rebuild the cache occasionally to catch changes */
+ EMACS_GET_TIME (t);
+ if (user_cache.user_names &&
+ (EMACS_SECS (t) - EMACS_SECS (user_cache.last_rebuild_time)
+ > USER_CACHE_TTL))
+ free_user_cache (&user_cache);
+
+ if (!user_cache.user_names)
+ {
+ struct passwd *pwd;
+ Lisp_Object cache_incomplete_p = noseeum_cons (Qt, Qnil);
+ int speccount = specpdl_depth ();
+
+ slow_down_interrupts ();
+ setpwent ();
+ record_unwind_protect (user_name_completion_unwind, cache_incomplete_p);
+ while ((pwd = getpwent ()))
+ {
+ QUIT;
+ DO_REALLOC (user_cache.user_names, user_cache.size,
+ user_cache.length + 1, struct user_name);
+ TO_INTERNAL_FORMAT (C_STRING, pwd->pw_name,
+ MALLOC,
+ (user_cache.user_names[user_cache.length].ptr,
+ user_cache.user_names[user_cache.length].len),
+ Qnative);
+ user_cache.length++;
+ }
+ XCAR (cache_incomplete_p) = Qnil;
+ unbind_to (speccount, Qnil);
+
+ EMACS_GET_TIME (user_cache.last_rebuild_time);
+ }
+
+ for (i = 0; i < user_cache.length; i++)
+ {
+ Bufbyte *u_name = user_cache.user_names[i].ptr;
+ Bytecount len = user_cache.user_names[i].len;
+ /* scmp() works in chars, not bytes, so we have to compute this: */
+ Charcount cclen = bytecount_to_charcount (u_name, len);
+
+ QUIT;
+
+ if (cclen < user_name_length
+ || 0 <= scmp_1 (u_name, XSTRING_DATA (user), user_name_length, 0))
+ continue;
+
+ matchcount++; /* count matching completions */
+
+ if (all_flag || NILP (bestmatch))
+ {
+ Lisp_Object name = Qnil;
+ struct gcpro ngcpro1;
+ NGCPRO1 (name);
+ /* This is a possible completion */
+ name = make_string (u_name, len);
+ if (all_flag)
+ {
+ bestmatch = Fcons (name, bestmatch);
+ }
+ else
+ {
+ bestmatch = name;
+ bestmatchsize = XSTRING_CHAR_LENGTH (name);
+ }
+ NUNGCPRO;
+ }
+ else
+ {
+ Charcount compare = min (bestmatchsize, cclen);
+ Bufbyte *p1 = XSTRING_DATA (bestmatch);
+ Bufbyte *p2 = u_name;
+ Charcount matchsize = scmp_1 (p1, p2, compare, 0);
+
+ if (matchsize < 0)
+ matchsize = compare;
+
+ bestmatchsize = matchsize;
+ }
+ }
+
+ UNGCPRO;
+
+ if (uniq)
+ *uniq = (matchcount == 1);
+
+ if (all_flag || NILP (bestmatch))
+ return bestmatch;
+ if (matchcount == 1 && bestmatchsize == user_name_length)
+ return Qt;
+ return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
+}
+#endif /* ! defined WINDOWSNT */
+
+\f
Lisp_Object
make_directory_hash_table (CONST char *path)
{
DIR *d;
- Lisp_Object hash = make_lisp_hashtable (100, HASHTABLE_NONWEAK,
- HASHTABLE_EQUAL);
if ((d = opendir (path)))
{
DIRENTRY *dp;
+ Lisp_Object hash =
+ make_lisp_hash_table (20, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
while ((dp = readdir (d)))
{
Bytecount len = NAMLEN (dp);
if (DIRENTRY_NONEMPTY (dp))
- Fputhash (make_ext_string ((Bufbyte *) dp->d_name, len,
- FORMAT_FILENAME), Qt, hash);
+ /* Cast to Bufbyte* is OK, as readdir() Mule-encapsulates. */
+ Fputhash (make_string ((Bufbyte *) dp->d_name, len), Qt, hash);
}
closedir (d);
+ return hash;
}
- return hash;
+ else
+ return Qnil;
}
\f
Lisp_Object
{
/* This function can GC. GC checked 1997.06.04. */
Lisp_Object values[12];
- Lisp_Object dirname = Qnil;
+ Lisp_Object directory = Qnil;
struct stat s;
char modes[10];
Lisp_Object handler;
struct gcpro gcpro1, gcpro2;
- GCPRO2 (filename, dirname);
+ GCPRO2 (filename, directory);
filename = Fexpand_file_name (filename, Qnil);
/* If the file name has special constructs in it,
}
#ifdef BSD4_2
- dirname = Ffile_name_directory (filename);
+ directory = Ffile_name_directory (filename);
#endif
#ifdef MSDOS
{
struct stat sdir;
- if (!NILP (dirname) && stat ((char *) XSTRING_DATA (dirname), &sdir) == 0)
+ if (!NILP (directory) && stat ((char *) XSTRING_DATA (directory), &sdir) == 0)
values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil;
else /* if we can't tell, assume worst */
values[9] = Qt;
DEFSUBR (Fdirectory_files);
DEFSUBR (Ffile_name_completion);
DEFSUBR (Ffile_name_all_completions);
+#ifndef WINDOWSNT
+ DEFSUBR (Fuser_name_completion);
+ DEFSUBR (Fuser_name_completion_1);
+ DEFSUBR (Fuser_name_all_completions);
+#endif
DEFSUBR (Ffile_attributes);
}
projects / chise / xemacs-chise.git.1 / blobdiff