/* Lisp functions for making directory listings.
- Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001
+ Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 1, or (at your option)
+the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Emacs is distributed in the hope that it will be useful,
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+#include <config.h>
+
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include "config.h"
+#include "systime.h"
+#include <errno.h>
+
+#ifdef VMS
+#include <string.h>
+#include <rms.h>
+#include <rmsdef.h>
+#endif
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+/* The d_nameln member of a struct dirent includes the '\0' character
+ on some systems, but not on others. What's worse, you can't tell
+ at compile-time which one it will be, since it really depends on
+ the sort of system providing the filesystem you're reading from,
+ not the system you are running on. Paul Eggert
+ <eggert@bi.twinsun.com> says this occurs when Emacs is running on a
+ SunOS 4.1.2 host, reading a directory that is remote-mounted from a
+ Solaris 2.1 host and is in a native Solaris 2.1 filesystem.
+
+ Since applying strlen to the name always works, we'll just do that. */
+#define NAMLEN(p) strlen (p->d_name)
#ifdef SYSV_SYSTEM_DIR
#include <dirent.h>
#define DIRENTRY struct dirent
-#define NAMLEN(p) strlen (p->d_name)
-#else
+#else /* not SYSV_SYSTEM_DIR */
#ifdef NONSYSTEM_DIR_LIBRARY
#include "ndir.h"
#else /* not NONSYSTEM_DIR_LIBRARY */
+#ifdef MSDOS
+#include <dirent.h>
+#else
#include <sys/dir.h>
+#endif
#endif /* not NONSYSTEM_DIR_LIBRARY */
+#include <sys/stat.h>
+
+#ifndef MSDOS
#define DIRENTRY struct direct
-#define NAMLEN(p) p->d_namlen
extern DIR *opendir ();
extern struct direct *readdir ();
+#endif /* not MSDOS */
+#endif /* not SYSV_SYSTEM_DIR */
+
+#ifdef MSDOS
+#define DIRENTRY_NONEMPTY(p) ((p)->d_name[0] != 0)
+#else
+#define DIRENTRY_NONEMPTY(p) ((p)->d_ino)
#endif
#include "lisp.h"
#include "buffer.h"
#include "commands.h"
-
+#include "charset.h"
+#include "coding.h"
#include "regex.h"
-#define min(a, b) ((a) < (b) ? (a) : (b))
+/* Returns a search buffer, with a fastmap allocated and ready to go. */
+extern struct re_pattern_buffer *compile_pattern ();
+
+/* From filemode.c. Can't go in Lisp.h because of `stat'. */
+extern void filemodestring P_ ((struct stat *, char *));
/* if system does not have symbolic links, it does not have lstat.
In that case, use ordinary stat instead. */
#define lstat stat
#endif
-Lisp_Object Vcompletion_ignored_extensions;
+extern int completion_ignore_case;
+extern Lisp_Object Vcompletion_regexp_list;
+extern Lisp_Object Vfile_name_coding_system, Vdefault_file_name_coding_system;
+Lisp_Object Vcompletion_ignored_extensions;
Lisp_Object Qcompletion_ignore_case;
+Lisp_Object Qdirectory_files;
+Lisp_Object Qdirectory_files_and_attributes;
+Lisp_Object Qfile_name_completion;
+Lisp_Object Qfile_name_all_completions;
+Lisp_Object Qfile_attributes;
+Lisp_Object Qfile_attributes_lessp;
+
+static int scmp P_ ((unsigned char *, unsigned char *, int));
\f
-DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0,
- "Return a list of names of files in DIRECTORY.\n\
-There are three optional arguments:\n\
-If FULL is non-nil, absolute pathnames of the files are returned.\n\
-If MATCH is non-nil, only pathnames containing that regexp are returned.\n\
-If NOSORT is non-nil, the list is not sorted--its order is unpredictable.\n\
- NOSORT is useful if you plan to sort the result yourself.")
- (dirname, full, match, nosort)
- Lisp_Object dirname, full, match, nosort;
+
+Lisp_Object
+directory_files_internal_unwind (dh)
+ Lisp_Object dh;
+{
+ DIR *d = (DIR *) ((XINT (XCAR (dh)) << 16) + XINT (XCDR (dh)));
+ closedir (d);
+ return Qnil;
+}
+
+/* Function shared by Fdirectory_files and Fdirectory_files_and_attributes.
+ When ATTRS is zero, return a list of directory filenames; when
+ non-zero, return a list of directory filenames and their attributes. */
+
+Lisp_Object
+directory_files_internal (directory, full, match, nosort, attrs)
+ Lisp_Object directory, full, match, nosort;
+ int attrs;
{
DIR *d;
- int length;
- Lisp_Object list, name;
+ int directory_nbytes;
+ Lisp_Object list, dirfilename, encoded_directory;
+ struct re_pattern_buffer *bufp = NULL;
+ int needsep = 0;
+ int count = SPECPDL_INDEX ();
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
+ DIRENTRY *dp;
+ int retry_p;
+
+ /* Because of file name handlers, these functions might call
+ Ffuncall, and cause a GC. */
+ list = encoded_directory = dirfilename = Qnil;
+ GCPRO5 (match, directory, list, dirfilename, encoded_directory);
+ directory = Fexpand_file_name (directory, Qnil);
+ dirfilename = Fdirectory_file_name (directory);
if (!NILP (match))
{
- CHECK_STRING (match, 3);
+ CHECK_STRING (match);
/* MATCH might be a flawed regular expression. Rather than
- catching and signalling our own errors, we just call
+ catching and signaling our own errors, we just call
compile_pattern to do the work for us. */
+ /* Pass 1 for the MULTIBYTE arg
+ because we do make multibyte strings if the contents warrant. */
#ifdef VMS
- compile_pattern (match, &searchbuf, 0
- buffer_defaults.downcase_table->contents);
+ bufp = compile_pattern (match, 0,
+ buffer_defaults.downcase_table, 0, 1);
#else
- compile_pattern (match, &searchbuf, 0, 0);
+ bufp = compile_pattern (match, 0, Qnil, 0, 1);
#endif
}
- dirname = Fexpand_file_name (dirname, Qnil);
- if (!(d = opendir (XSTRING (Fdirectory_file_name (dirname))->data)))
- report_file_error ("Opening directory", Fcons (dirname, Qnil));
+ /* Note: ENCODE_FILE and DECODE_FILE can GC because they can run
+ run_pre_post_conversion_on_str which calls Lisp directly and
+ indirectly. */
+ dirfilename = ENCODE_FILE (dirfilename);
+ encoded_directory = ENCODE_FILE (directory);
+
+ /* Now *bufp is the compiled form of MATCH; don't call anything
+ which might compile a new regexp until we're done with the loop! */
+
+ /* Do this opendir after anything which might signal an error; if
+ an error is signaled while the directory stream is open, we
+ have to make sure it gets closed, and setting up an
+ unwind_protect to do so would be a pain. */
+ retry:
+
+ d = opendir (XSTRING (dirfilename)->data);
+ if (d == NULL)
+ report_file_error ("Opening directory", Fcons (directory, Qnil));
+
+ /* Unfortunately, we can now invoke expand-file-name and
+ file-attributes on filenames, both of which can throw, so we must
+ do a proper unwind-protect. */
+ record_unwind_protect (directory_files_internal_unwind,
+ Fcons (make_number (((unsigned long) d) >> 16),
+ make_number (((unsigned long) d) & 0xffff)));
- list = Qnil;
- length = XSTRING (dirname)->size;
+ directory_nbytes = STRING_BYTES (XSTRING (directory));
+ re_match_object = Qt;
- /* Loop reading blocks */
- while (1)
+ /* Decide whether we need to add a directory separator. */
+#ifndef VMS
+ if (directory_nbytes == 0
+ || !IS_ANY_SEP (XSTRING (directory)->data[directory_nbytes - 1]))
+ needsep = 1;
+#endif /* not VMS */
+
+ /* Loop reading blocks until EOF or error. */
+ for (;;)
{
- DIRENTRY *dp = readdir (d);
- int len;
+ errno = 0;
+ dp = readdir (d);
- if (!dp) break;
- len = NAMLEN (dp);
- if (dp->d_ino)
+#ifdef EAGAIN
+ if (dp == NULL && errno == EAGAIN)
+ continue;
+#endif
+
+ if (dp == NULL)
+ break;
+
+ if (DIRENTRY_NONEMPTY (dp))
{
+ int len;
+ int wanted = 0;
+ Lisp_Object name, finalname;
+ struct gcpro gcpro1, gcpro2;
+
+ len = NAMLEN (dp);
+ name = finalname = make_unibyte_string (dp->d_name, len);
+ GCPRO2 (finalname, name);
+
+ /* Note: ENCODE_FILE can GC; it should protect its argument,
+ though. */
+ name = DECODE_FILE (name);
+ len = STRING_BYTES (XSTRING (name));
+
+ /* Now that we have unwind_protect in place, we might as well
+ allow matching to be interrupted. */
+ immediate_quit = 1;
+ QUIT;
+
if (NILP (match)
- || (0 <= re_search (&searchbuf, dp->d_name, len, 0, len, 0)))
+ || (0 <= re_search (bufp, XSTRING (name)->data, len, 0, len, 0)))
+ wanted = 1;
+
+ immediate_quit = 0;
+
+ if (wanted)
{
if (!NILP (full))
{
- int index = XSTRING (dirname)->size;
- int total = len + index;
-#ifndef VMS
- if (length == 0
- || XSTRING (dirname)->data[length - 1] != '/')
- total++;
-#endif /* VMS */
+ Lisp_Object fullname;
+ int nbytes = len + directory_nbytes + needsep;
+ int nchars;
- name = make_uninit_string (total);
- bcopy (XSTRING (dirname)->data, XSTRING (name)->data,
- index);
-#ifndef VMS
- if (length == 0
- || XSTRING (dirname)->data[length - 1] != '/')
- XSTRING (name)->data[index++] = '/';
-#endif /* VMS */
- bcopy (dp->d_name, XSTRING (name)->data + index, len);
+ fullname = make_uninit_multibyte_string (nbytes, nbytes);
+ bcopy (XSTRING (directory)->data, XSTRING (fullname)->data,
+ directory_nbytes);
+
+ if (needsep)
+ XSTRING (fullname)->data[directory_nbytes] = DIRECTORY_SEP;
+
+ bcopy (XSTRING (name)->data,
+ XSTRING (fullname)->data + directory_nbytes + needsep,
+ len);
+
+ nchars = chars_in_text (XSTRING (fullname)->data, nbytes);
+
+ /* Some bug somewhere. */
+ if (nchars > nbytes)
+ abort ();
+
+ XSTRING (fullname)->size = nchars;
+ if (nchars == nbytes)
+ SET_STRING_BYTES (XSTRING (fullname), -1);
+
+ finalname = fullname;
}
else
- name = make_string (dp->d_name, len);
- list = Fcons (name, list);
+ finalname = name;
+
+ if (attrs)
+ {
+ /* Construct an expanded filename for the directory entry.
+ Use the decoded names for input to Ffile_attributes. */
+ Lisp_Object decoded_fullname, fileattrs;
+ struct gcpro gcpro1, gcpro2;
+
+ decoded_fullname = fileattrs = Qnil;
+ GCPRO2 (decoded_fullname, fileattrs);
+
+ /* Both Fexpand_file_name and Ffile_attributes can GC. */
+ decoded_fullname = Fexpand_file_name (name, directory);
+ fileattrs = Ffile_attributes (decoded_fullname);
+
+ list = Fcons (Fcons (finalname, fileattrs), list);
+ UNGCPRO;
+ }
+ else
+ list = Fcons (finalname, list);
}
+
+ UNGCPRO;
}
}
+
+ retry_p = 0;
+#ifdef EINTR
+ retry_p |= errno == EINTR;
+#endif
+
closedir (d);
- if (!NILP (nosort))
- return list;
- return Fsort (Fnreverse (list), Qstring_lessp);
+
+ /* Discard the unwind protect. */
+ specpdl_ptr = specpdl + count;
+
+ if (retry_p)
+ {
+ list = Qnil;
+ goto retry;
+ }
+
+ if (NILP (nosort))
+ list = Fsort (Fnreverse (list),
+ attrs ? Qfile_attributes_lessp : Qstring_lessp);
+
+ RETURN_UNGCPRO (list);
+}
+
+
+DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0,
+ doc: /* Return a list of names of files in DIRECTORY.
+There are three optional arguments:
+If FULL is non-nil, return absolute file names. Otherwise return names
+ that are relative to the specified directory.
+If MATCH is non-nil, mention only file names that match the regexp MATCH.
+If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
+ NOSORT is useful if you plan to sort the result yourself. */)
+ (directory, full, match, nosort)
+ Lisp_Object directory, full, match, nosort;
+{
+ Lisp_Object handler;
+
+ /* If the file name has special constructs in it,
+ call the corresponding file handler. */
+ handler = Ffind_file_name_handler (directory, Qdirectory_files);
+ if (!NILP (handler))
+ {
+ Lisp_Object args[6];
+
+ args[0] = handler;
+ args[1] = Qdirectory_files;
+ args[2] = directory;
+ args[3] = full;
+ args[4] = match;
+ args[5] = nosort;
+ return Ffuncall (6, args);
+ }
+
+ return directory_files_internal (directory, full, match, nosort, 0);
}
+
+DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes,
+ Sdirectory_files_and_attributes, 1, 4, 0,
+ doc: /* Return a list of names of files and their attributes in DIRECTORY.
+There are three optional arguments:
+If FULL is non-nil, return absolute file names. Otherwise return names
+ that are relative to the specified directory.
+If MATCH is non-nil, mention only file names that match the regexp MATCH.
+If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
+ NOSORT is useful if you plan to sort the result yourself. */)
+ (directory, full, match, nosort)
+ Lisp_Object directory, full, match, nosort;
+{
+ Lisp_Object handler;
+
+ /* If the file name has special constructs in it,
+ call the corresponding file handler. */
+ handler = Ffind_file_name_handler (directory, Qdirectory_files_and_attributes);
+ if (!NILP (handler))
+ {
+ Lisp_Object args[6];
+
+ args[0] = handler;
+ args[1] = Qdirectory_files_and_attributes;
+ args[2] = directory;
+ args[3] = full;
+ args[4] = match;
+ args[5] = nosort;
+ return Ffuncall (6, args);
+ }
+
+ return directory_files_internal (directory, full, match, nosort, 1);
+}
+
\f
Lisp_Object file_name_completion ();
DEFUN ("file-name-completion", Ffile_name_completion, Sfile_name_completion,
- 2, 2, 0,
- "Complete file name FILE in directory DIR.\n\
-Returns the longest string\n\
-common to all filenames in DIR that start with FILE.\n\
-If there is only one and FILE matches it exactly, returns t.\n\
-Returns nil if DIR contains no name starting with FILE.")
- (file, dirname)
- Lisp_Object file, dirname;
+ 2, 2, 0,
+ doc: /* Complete file name FILE in directory DIRECTORY.
+Returns the longest string
+common to all file names 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.
+
+This function ignores some of the possible completions as
+determined by the variable `completion-ignored-extensions', which see. */)
+ (file, directory)
+ Lisp_Object file, directory;
{
- /* Don't waste time trying to complete a null string.
- Besides, this case happens when user is being asked for
- a directory name and has supplied one ending in a /.
- We would not want to add anything in that case
- even if there are some unique characters in that directory. */
- if (XTYPE (file) == Lisp_String && XSTRING (file)->size == 0)
- return file;
- return file_name_completion (file, dirname, 0, 0);
+ Lisp_Object handler;
+
+ /* If the directory name has special constructs in it,
+ call the corresponding file handler. */
+ handler = Ffind_file_name_handler (directory, Qfile_name_completion);
+ if (!NILP (handler))
+ 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, directory);
+
+ return file_name_completion (file, directory, 0, 0);
}
DEFUN ("file-name-all-completions", Ffile_name_all_completions,
- Sfile_name_all_completions, 2, 2, 0,
- "Return a list of all completions of file name FILE in directory DIR.\n\
-These are all file names in directory DIR which begin with FILE.")
- (file, dirname)
- Lisp_Object file, dirname;
+ Sfile_name_all_completions, 2, 2, 0,
+ doc: /* 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. */)
+ (file, directory)
+ Lisp_Object file, directory;
{
- return file_name_completion (file, dirname, 1, 0);
-}
+ Lisp_Object handler;
-#ifdef VMS
+ /* If the directory name has special constructs in it,
+ call the corresponding file handler. */
+ handler = Ffind_file_name_handler (directory, Qfile_name_all_completions);
+ if (!NILP (handler))
+ return call3 (handler, Qfile_name_all_completions, file, directory);
-DEFUN ("file-name-all-versions", Ffile_name_all_versions,
- Sfile_name_all_versions, 2, 2, 0,
- "Return a list of all versions of file name FILE in directory DIR.")
- (file, dirname)
- Lisp_Object file, dirname;
-{
- return file_name_completion (file, dirname, 1, 1);
+ /* If the file name has special constructs in it,
+ call the corresponding file handler. */
+ handler = Ffind_file_name_handler (file, Qfile_name_all_completions);
+ if (!NILP (handler))
+ return call3 (handler, Qfile_name_all_completions, file, directory);
+
+ return file_name_completion (file, directory, 1, 0);
}
-#endif /* VMS */
+static int file_name_completion_stat ();
Lisp_Object
file_name_completion (file, dirname, all_flag, ver_flag)
int all_flag, ver_flag;
{
DIR *d;
- DIRENTRY *dp;
- int bestmatchsize, skip;
+ int bestmatchsize = 0, skip;
register int compare, matchsize;
unsigned char *p1, *p2;
int matchcount = 0;
Lisp_Object bestmatch, tem, elt, name;
+ Lisp_Object encoded_file;
+ Lisp_Object encoded_dir;
struct stat st;
int directoryp;
int passcount;
- int count = specpdl_ptr - specpdl;
+ int count = SPECPDL_INDEX ();
+ struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
+
+ elt = Qnil;
+
#ifdef VMS
extern DIRENTRY * readdirver ();
readfunc = readdirver;
file = Fupcase (file);
#else /* not VMS */
- CHECK_STRING (file, 0);
+ CHECK_STRING (file);
#endif /* not VMS */
- dirname = Fexpand_file_name (dirname, Qnil);
+#ifdef FILE_SYSTEM_CASE
+ file = FILE_SYSTEM_CASE (file);
+#endif
bestmatch = Qnil;
+ encoded_file = encoded_dir = Qnil;
+ GCPRO5 (file, dirname, bestmatch, encoded_file, encoded_dir);
+ dirname = Fexpand_file_name (dirname, Qnil);
+
+ /* Do completion on the encoded file name
+ because the other names in the directory are (we presume)
+ encoded likewise. We decode the completed string at the end. */
+ encoded_file = ENCODE_FILE (file);
+
+ encoded_dir = ENCODE_FILE (dirname);
/* With passcount = 0, ignore files that end in an ignored extension.
If nothing found then try again with passcount = 1, don't ignore them.
for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++)
{
- if (!(d = opendir (XSTRING (Fdirectory_file_name (dirname))->data)))
+ d = opendir (XSTRING (Fdirectory_file_name (encoded_dir))->data);
+ if (!d)
report_file_error ("Opening directory", Fcons (dirname, Qnil));
/* Loop reading blocks */
if (!NILP (Vquit_flag) && NILP (Vinhibit_quit))
goto quit;
- if (!dp->d_ino
- || len < XSTRING (file)->size
- || 0 <= scmp (dp->d_name, XSTRING (file)->data,
- XSTRING (file)->size))
+ if (! DIRENTRY_NONEMPTY (dp)
+ || len < XSTRING (encoded_file)->size
+ || 0 <= scmp (dp->d_name, XSTRING (encoded_file)->data,
+ XSTRING (encoded_file)->size))
continue;
- if (file_name_completion_stat (dirname, dp, &st) < 0)
+ if (file_name_completion_stat (encoded_dir, dp, &st) < 0)
continue;
directoryp = ((st.st_mode & S_IFMT) == S_IFDIR);
tem = Qnil;
- if (!directoryp)
+ if (directoryp)
+ {
+#ifndef TRIVIAL_DIRECTORY_ENTRY
+#define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
+#endif
+ /* "." and ".." are never interesting as completions, but are
+ actually in the way in a directory contains only one file. */
+ if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name))
+ continue;
+ if (!passcount && len > XSTRING (encoded_file)->size)
+ /* Ignore directories if they match an element of
+ completion-ignored-extensions which ends in a slash. */
+ for (tem = Vcompletion_ignored_extensions;
+ CONSP (tem); tem = XCDR (tem))
+ {
+ int elt_len;
+
+ elt = XCAR (tem);
+ if (!STRINGP (elt))
+ continue;
+ /* Need to encode ELT, since scmp compares unibyte
+ strings only. */
+ elt = ENCODE_FILE (elt);
+ elt_len = XSTRING (elt)->size - 1; /* -1 for trailing / */
+ if (elt_len <= 0)
+ continue;
+ p1 = XSTRING (elt)->data;
+ if (p1[elt_len] != '/')
+ continue;
+ skip = len - elt_len;
+ if (skip < 0)
+ continue;
+
+ if (0 <= scmp (dp->d_name + skip, p1, elt_len))
+ continue;
+ break;
+ }
+ }
+ else
{
/* Compare extensions-to-be-ignored against end of this file name */
/* if name is not an exact match against specified string */
- if (!passcount && len > XSTRING (file)->size)
+ if (!passcount && len > XSTRING (encoded_file)->size)
/* and exit this for loop if a match is found */
for (tem = Vcompletion_ignored_extensions;
- CONSP (tem); tem = XCONS (tem)->cdr)
+ CONSP (tem); tem = XCDR (tem))
{
- elt = XCONS (tem)->car;
- if (XTYPE (elt) != Lisp_String) continue;
+ elt = XCAR (tem);
+ if (!STRINGP (elt)) continue;
+ /* Need to encode ELT, since scmp compares unibyte
+ strings only. */
+ elt = ENCODE_FILE (elt);
skip = len - XSTRING (elt)->size;
if (skip < 0) continue;
}
}
- /* Unless an ignored-extensions match was found,
- process this name as a completion */
- if (passcount || !CONSP (tem))
+ /* If an ignored-extensions match was found,
+ don't process this name as a completion. */
+ if (!passcount && CONSP (tem))
+ continue;
+
+ if (!passcount)
{
- /* Update computation of how much all possible completions match */
+ Lisp_Object regexps;
+ Lisp_Object zero;
+ XSETFASTINT (zero, 0);
- matchcount++;
+ /* Ignore this element if it fails to match all the regexps. */
+ for (regexps = Vcompletion_regexp_list; CONSP (regexps);
+ regexps = XCDR (regexps))
+ {
+ tem = Fstring_match (XCAR (regexps),
+ make_string (dp->d_name, len), zero);
+ if (NILP (tem))
+ break;
+ }
+ if (CONSP (regexps))
+ continue;
+ }
- if (all_flag || NILP (bestmatch))
+ /* Update computation of how much all possible completions match */
+
+ matchcount++;
+
+ if (all_flag || NILP (bestmatch))
+ {
+ /* This is a possible completion */
+ if (directoryp)
{
- /* This is a possible completion */
- if (directoryp)
- {
- /* This completion is a directory; make it end with '/' */
- name = Ffile_name_as_directory (make_string (dp->d_name, len));
- }
- else
- name = make_string (dp->d_name, len);
- if (all_flag)
- {
- bestmatch = Fcons (name, bestmatch);
- }
- else
- {
- bestmatch = name;
- bestmatchsize = XSTRING (name)->size;
- }
+ /* This completion is a directory; make it end with '/' */
+ name = Ffile_name_as_directory (make_string (dp->d_name, len));
+ }
+ else
+ name = make_string (dp->d_name, len);
+ if (all_flag)
+ {
+ name = DECODE_FILE (name);
+ bestmatch = Fcons (name, bestmatch);
}
else
{
- compare = min (bestmatchsize, len);
- p1 = XSTRING (bestmatch)->data;
- p2 = (unsigned char *) dp->d_name;
- matchsize = scmp(p1, p2, compare);
- if (matchsize < 0)
- matchsize = compare;
- /* If this dirname all matches,
- see if implicit following slash does too. */
- if (directoryp
- && compare == matchsize
- && bestmatchsize > matchsize
- && p1[matchsize] == '/')
- matchsize++;
- bestmatchsize = min (matchsize, bestmatchsize);
+ bestmatch = name;
+ bestmatchsize = XSTRING (name)->size;
+ }
+ }
+ else
+ {
+ compare = min (bestmatchsize, len);
+ p1 = XSTRING (bestmatch)->data;
+ p2 = (unsigned char *) dp->d_name;
+ matchsize = scmp(p1, p2, compare);
+ if (matchsize < 0)
+ matchsize = compare;
+ if (completion_ignore_case)
+ {
+ /* If this is an exact match except for case,
+ use it as the best match rather than one that is not
+ an exact match. This way, we get the case pattern
+ of the actual match. */
+ /* This tests that the current file is an exact match
+ but BESTMATCH is not (it is too long). */
+ if ((matchsize == len
+ && matchsize + !!directoryp
+ < XSTRING (bestmatch)->size)
+ ||
+ /* If there is no exact match ignoring case,
+ prefer a match that does not change the case
+ of the input. */
+ /* If there is more than one exact match aside from
+ case, and one of them is exact including case,
+ prefer that one. */
+ /* This == checks that, of current file and BESTMATCH,
+ either both or neither are exact. */
+ (((matchsize == len)
+ ==
+ (matchsize + !!directoryp
+ == XSTRING (bestmatch)->size))
+ && !bcmp (p2, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size)
+ && bcmp (p1, XSTRING (encoded_file)->data, XSTRING (encoded_file)->size)))
+ {
+ bestmatch = make_string (dp->d_name, len);
+ if (directoryp)
+ bestmatch = Ffile_name_as_directory (bestmatch);
+ }
}
+
+ /* If this dirname all matches, see if implicit following
+ slash does too. */
+ if (directoryp
+ && compare == matchsize
+ && bestmatchsize > matchsize
+ && IS_ANY_SEP (p1[matchsize]))
+ matchsize++;
+ bestmatchsize = matchsize;
}
}
closedir (d);
}
- unbind_to (count, Qnil);
+ UNGCPRO;
+ bestmatch = unbind_to (count, bestmatch);
if (all_flag || NILP (bestmatch))
- return bestmatch;
+ {
+ if (STRINGP (bestmatch))
+ bestmatch = DECODE_FILE (bestmatch);
+ return bestmatch;
+ }
if (matchcount == 1 && bestmatchsize == XSTRING (file)->size)
return Qt;
- return Fsubstring (bestmatch, make_number (0), make_number (bestmatchsize));
+ bestmatch = Fsubstring (bestmatch, make_number (0),
+ make_number (bestmatchsize));
+ /* Now that we got the right initial segment of BESTMATCH,
+ decode it from the coding system in use. */
+ bestmatch = DECODE_FILE (bestmatch);
+ return bestmatch;
+
quit:
if (d) closedir (d);
Vquit_flag = Qnil;
return Fsignal (Qquit, Qnil);
}
+/* Compare exactly LEN chars of strings at S1 and S2,
+ ignoring case if appropriate.
+ Return -1 if strings match,
+ else number of chars that match at the beginning. */
+
+static int
+scmp (s1, s2, len)
+ register unsigned char *s1, *s2;
+ int len;
+{
+ register int l = len;
+
+ if (completion_ignore_case)
+ {
+ while (l && DOWNCASE (*s1++) == DOWNCASE (*s2++))
+ l--;
+ }
+ else
+ {
+ while (l && *s1++ == *s2++)
+ l--;
+ }
+ if (l == 0)
+ return -1;
+ else
+ return len - l;
+}
+
+static int
file_name_completion_stat (dirname, dp, st_addr)
Lisp_Object dirname;
DIRENTRY *dp;
{
int len = NAMLEN (dp);
int pos = XSTRING (dirname)->size;
+ int value;
char *fullname = (char *) alloca (len + pos + 2);
+#ifdef MSDOS
+#if __DJGPP__ > 1
+ /* Some fields of struct stat are *very* expensive to compute on MS-DOS,
+ but aren't required here. Avoid computing the following fields:
+ st_inode, st_size and st_nlink for directories, and the execute bits
+ in st_mode for non-directory files with non-standard extensions. */
+
+ unsigned short save_djstat_flags = _djstat_flags;
+
+ _djstat_flags = _STAT_INODE | _STAT_EXEC_MAGIC | _STAT_DIRSIZE;
+#endif /* __DJGPP__ > 1 */
+#endif /* MSDOS */
+
bcopy (XSTRING (dirname)->data, fullname, pos);
#ifndef VMS
- if (fullname[pos - 1] != '/')
- fullname[pos++] = '/';
+ if (!IS_DIRECTORY_SEP (fullname[pos - 1]))
+ fullname[pos++] = DIRECTORY_SEP;
#endif
bcopy (dp->d_name, fullname + pos, len);
fullname[pos + len] = 0;
- return stat (fullname, st_addr);
+#ifdef S_IFLNK
+ /* We want to return success if a link points to a nonexistent file,
+ but we want to return the status for what the link points to,
+ in case it is a directory. */
+ value = lstat (fullname, st_addr);
+ stat (fullname, st_addr);
+ return value;
+#else
+ value = stat (fullname, st_addr);
+#ifdef MSDOS
+#if __DJGPP__ > 1
+ _djstat_flags = save_djstat_flags;
+#endif /* __DJGPP__ > 1 */
+#endif /* MSDOS */
+ return value;
+#endif /* S_IFLNK */
+}
+\f
+#ifdef VMS
+
+DEFUN ("file-name-all-versions", Ffile_name_all_versions,
+ Sfile_name_all_versions, 2, 2, 0,
+ doc: /* Return a list of all versions of file name FILE in directory DIRECTORY. */)
+ (file, directory)
+ Lisp_Object file, directory;
+{
+ return file_name_completion (file, directory, 1, 1);
+}
+
+DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0,
+ doc: /* Return the maximum number of versions allowed for FILE.
+Returns nil if the file cannot be opened or if there is no version limit. */)
+ (filename)
+ Lisp_Object filename;
+{
+ Lisp_Object retval;
+ struct FAB fab;
+ struct RAB rab;
+ struct XABFHC xabfhc;
+ int status;
+
+ filename = Fexpand_file_name (filename, Qnil);
+ fab = cc$rms_fab;
+ xabfhc = cc$rms_xabfhc;
+ fab.fab$l_fna = XSTRING (filename)->data;
+ fab.fab$b_fns = strlen (fab.fab$l_fna);
+ fab.fab$l_xab = (char *) &xabfhc;
+ status = sys$open (&fab, 0, 0);
+ if (status != RMS$_NORMAL) /* Probably non-existent file */
+ return Qnil;
+ sys$close (&fab, 0, 0);
+ if (xabfhc.xab$w_verlimit == 32767)
+ return Qnil; /* No version limit */
+ else
+ return make_number (xabfhc.xab$w_verlimit);
}
+
+#endif /* VMS */
\f
Lisp_Object
make_time (time)
- int time;
+ time_t time;
{
return Fcons (make_number (time >> 16),
Fcons (make_number (time & 0177777), Qnil));
}
DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 1, 0,
- "Return a list of attributes of file FILENAME.\n\
-Value is nil if specified file cannot be opened.\n\
-Otherwise, list elements are:\n\
- 0. t for directory, string (name linked to) for symbolic link, or nil.\n\
- 1. Number of links to file.\n\
- 2. File uid.\n\
- 3. File gid.\n\
- 4. Last access time, as a list of two integers.\n\
- First integer has high-order 16 bits of time, second has low 16 bits.\n\
- 5. Last modification time, likewise.\n\
- 6. Last status change time, likewise.\n\
- 7. Size in bytes.\n\
- 8. File modes, as a string of ten letters or dashes as in ls -l.\n\
- 9. t iff file's gid would change if file were deleted and recreated.\n\
-10. inode number.\n\
-11. Device number.\n\
-\n\
-If file does not exists, returns nil.")
- (filename)
+ doc: /* Return a list of attributes of file FILENAME.
+Value is nil if specified file cannot be opened.
+Otherwise, list elements are:
+ 0. t for directory, string (name linked to) for symbolic link, or nil.
+ 1. Number of links to file.
+ 2. File uid.
+ 3. File gid.
+ 4. Last access time, as a list of two integers.
+ First integer has high-order 16 bits of time, second has low 16 bits.
+ 5. Last modification time, likewise.
+ 6. Last status change time, likewise.
+ 7. Size in bytes.
+ This is a floating point number if the size is too large for an integer.
+ 8. File modes, as a string of ten letters or dashes as in ls -l.
+ 9. t iff file's gid would change if file were deleted and recreated.
+10. inode number. If inode number is larger than the Emacs integer,
+ this is a cons cell containing two integers: first the high part,
+ then the low 16 bits.
+11. Device number. If it is larger than the Emacs integer, this is
+ a cons cell, similar to the inode number.
+
+If file does not exist, returns nil. */)
+ (filename)
Lisp_Object filename;
{
Lisp_Object values[12];
- Lisp_Object dirname;
+ Lisp_Object encoded;
struct stat s;
+#if defined (BSD4_2) || defined (BSD4_3)
+ Lisp_Object dirname;
struct stat sdir;
+#endif
char modes[10];
+ Lisp_Object handler;
filename = Fexpand_file_name (filename, Qnil);
- if (lstat (XSTRING (filename)->data, &s) < 0)
+
+ /* If the file name has special constructs in it,
+ call the corresponding file handler. */
+ handler = Ffind_file_name_handler (filename, Qfile_attributes);
+ if (!NILP (handler))
+ return call2 (handler, Qfile_attributes, filename);
+
+ encoded = ENCODE_FILE (filename);
+
+ if (lstat (XSTRING (encoded)->data, &s) < 0)
return Qnil;
switch (s.st_mode & S_IFMT)
values[4] = make_time (s.st_atime);
values[5] = make_time (s.st_mtime);
values[6] = make_time (s.st_ctime);
- /* perhaps we should set this to most-positive-fixnum if it is too large? */
values[7] = make_number (s.st_size);
+ /* If the size is out of range for an integer, return a float. */
+ if (XINT (values[7]) != s.st_size)
+ values[7] = make_float ((double)s.st_size);
filemodestring (&s, modes);
values[8] = make_string (modes, 10);
-#ifdef BSD4_3 /* Gross kludge to avoid lack of "#if defined(...)" in VMS */
-#define BSD4_2 /* A new meaning to the term `backwards compatability' */
-#endif
-#ifdef BSD4_2 /* file gid will be dir gid */
+#if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
dirname = Ffile_name_directory (filename);
- if (dirname != Qnil && stat (XSTRING (dirname)->data, &sdir) == 0)
+ if (! NILP (dirname))
+ encoded = ENCODE_FILE (dirname);
+ if (! NILP (dirname) && stat (XSTRING (encoded)->data, &sdir) == 0)
values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil;
else /* if we can't tell, assume worst */
values[9] = Qt;
#else /* file gid will be egid */
values[9] = (s.st_gid != getegid ()) ? Qt : Qnil;
#endif /* BSD4_2 (or BSD4_3) */
-#ifdef BSD4_3
-#undef BSD4_2 /* ok, you can look again without throwing up */
-#endif
- values[10] = make_number (s.st_ino);
- values[11] = make_number (s.st_dev);
+ /* Cast -1 to avoid warning if int is not as wide as VALBITS. */
+ if (FIXNUM_OVERFLOW_P (s.st_ino))
+ /* To allow inode numbers larger than VALBITS, separate the bottom
+ 16 bits. */
+ values[10] = Fcons (make_number (s.st_ino >> 16),
+ make_number (s.st_ino & 0xffff));
+ else
+ /* But keep the most common cases as integers. */
+ values[10] = make_number (s.st_ino);
+
+ /* Likewise for device. */
+ if (FIXNUM_OVERFLOW_P (s.st_dev))
+ values[11] = Fcons (make_number (s.st_dev >> 16),
+ make_number (s.st_dev & 0xffff));
+ else
+ values[11] = make_number (s.st_dev);
+
return Flist (sizeof(values) / sizeof(values[0]), values);
}
+
+DEFUN ("file-attributes-lessp", Ffile_attributes_lessp, Sfile_attributes_lessp, 2, 2, 0,
+ doc: /* Return t if first arg file attributes list is less than second.
+Comparison is in lexicographic order and case is significant. */)
+ (f1, f2)
+ Lisp_Object f1, f2;
+{
+ return Fstring_lessp (Fcar (f1), Fcar (f2));
+}
\f
+void
syms_of_dired ()
{
+ Qdirectory_files = intern ("directory-files");
+ Qdirectory_files_and_attributes = intern ("directory-files-and-attributes");
+ Qfile_name_completion = intern ("file-name-completion");
+ Qfile_name_all_completions = intern ("file-name-all-completions");
+ Qfile_attributes = intern ("file-attributes");
+ Qfile_attributes_lessp = intern ("file-attributes-lessp");
+
+ staticpro (&Qdirectory_files);
+ staticpro (&Qdirectory_files_and_attributes);
+ staticpro (&Qfile_name_completion);
+ staticpro (&Qfile_name_all_completions);
+ staticpro (&Qfile_attributes);
+ staticpro (&Qfile_attributes_lessp);
+
defsubr (&Sdirectory_files);
+ defsubr (&Sdirectory_files_and_attributes);
defsubr (&Sfile_name_completion);
#ifdef VMS
defsubr (&Sfile_name_all_versions);
+ defsubr (&Sfile_version_limit);
#endif /* VMS */
defsubr (&Sfile_name_all_completions);
defsubr (&Sfile_attributes);
+ defsubr (&Sfile_attributes_lessp);
#ifdef VMS
Qcompletion_ignore_case = intern ("completion-ignore-case");
#endif /* VMS */
DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions,
- "*Completion ignores filenames ending in any string in this list.\n\
-This variable does not affect lists of possible completions,\n\
-but does affect the commands that actually do completions.");
+ doc: /* *Completion ignores filenames ending in any string in this list.
+Directories are ignored if they match any string in this list which
+ends in a slash.
+This variable does not affect lists of possible completions,
+but does affect the commands that actually do completions. */);
Vcompletion_ignored_extensions = Qnil;
}
HCoop / bpt / emacs.git / blobdiff