/* Lisp functions for making directory listings.
- Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1993 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <sys/types.h>
#include <sys/stat.h>
-#include "config.h"
+#include <config.h>
+
+#ifdef VMS
+#include <string.h>
+#include <rms.h>
+#include <rmsdef.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
#endif /* not NONSYSTEM_DIR_LIBRARY */
#define DIRENTRY struct direct
-#define NAMLEN(p) p->d_namlen
extern DIR *opendir ();
extern struct direct *readdir ();
#include "regex.h"
+/* A search buffer, with a fastmap allocated and ready to go. */
+extern struct re_pattern_buffer searchbuf;
+
#define min(a, b) ((a) < (b) ? (a) : (b))
/* if system does not have symbolic links, it does not have lstat.
#define lstat stat
#endif
+extern Lisp_Object Ffind_file_name_handler ();
+
Lisp_Object Vcompletion_ignored_extensions;
Lisp_Object Qcompletion_ignore_case;
Lisp_Object Qdirectory_files;
Lisp_Object Qfile_name_completion;
Lisp_Object Qfile_name_all_completions;
+Lisp_Object Qfile_attributes;
\f
DEFUN ("directory-files", Fdirectory_files, Sdirectory_files, 1, 4, 0,
"Return a list of names of files in DIRECTORY.\n\
{
DIR *d;
int length;
- Lisp_Object list, name;
+ Lisp_Object list, name, dirfilename;
Lisp_Object handler;
/* If the file name has special constructs in it,
call the corresponding file handler. */
- handler = find_file_handler (filename);
+ handler = Ffind_file_name_handler (dirname);
if (!NILP (handler))
{
Lisp_Object args[6];
return Ffuncall (6, args);
}
+ {
+ struct gcpro gcpro1, gcpro2;
+
+ /* Because of file name handlers, these functions might call
+ Ffuncall, and cause a GC. */
+ GCPRO1 (match);
+ dirname = Fexpand_file_name (dirname, Qnil);
+ UNGCPRO;
+ GCPRO2 (match, dirname);
+ dirfilename = Fdirectory_file_name (dirname);
+ UNGCPRO;
+ }
+
if (!NILP (match))
{
CHECK_STRING (match, 3);
catching and signalling our own errors, we just call
compile_pattern to do the work for us. */
#ifdef VMS
- compile_pattern (match, &searchbuf, 0
+ compile_pattern (match, &searchbuf, 0,
buffer_defaults.downcase_table->contents);
#else
compile_pattern (match, &searchbuf, 0, 0);
#endif
}
- dirname = Fexpand_file_name (dirname, Qnil);
- if (!(d = opendir (XSTRING (Fdirectory_file_name (dirname))->data)))
+ /* Now searchbuf 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 signalled 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. */
+ d = opendir (XSTRING (dirfilename)->data);
+ if (! d)
report_file_error ("Opening directory", Fcons (dirname, Qnil));
list = Qnil;
/* If the file name has special constructs in it,
call the corresponding file handler. */
- handler = find_file_handler (filename);
+ handler = Ffind_file_name_handler (dirname);
if (!NILP (handler))
return call3 (handler, Qfile_name_completion, file, dirname);
/* If the file name has special constructs in it,
call the corresponding file handler. */
- handler = find_file_handler (filename);
+ handler = Ffind_file_name_handler (dirname);
if (!NILP (handler))
return call3 (handler, Qfile_name_all_completions, file, dirname);
return file_name_completion (file, dirname, 1, 0);
}
-#ifdef VMS
-
-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);
-}
-
-#endif /* VMS */
-
Lisp_Object
file_name_completion (file, dirname, all_flag, ver_flag)
Lisp_Object file, dirname;
return stat (fullname, st_addr);
}
\f
+#ifdef VMS
+
+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);
+}
+
+DEFUN ("file-version-limit", Ffile_version_limit, Sfile_version_limit, 1, 1, 0,
+ "Return the maximum number of versions allowed for FILE.\n\
+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;
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\
+ 7. Size in bytes (-1, if number is out of range).\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.")
+If file does not exist, returns nil.")
(filename)
Lisp_Object filename;
{
/* If the file name has special constructs in it,
call the corresponding file handler. */
- handler = find_file_handler (filename);
+ handler = Ffind_file_name_handler (filename);
if (!NILP (handler))
return call2 (handler, Qfile_attributes, filename);
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, give back -1. */
+ if (XINT (values[7]) != s.st_size)
+ XSETINT (values[7], -1);
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' */
+#define BSD4_2 /* A new meaning to the term `backwards compatibility' */
#endif
#ifdef BSD4_2 /* file gid will be dir gid */
dirname = Ffile_name_directory (filename);
- if (dirname != Qnil && stat (XSTRING (dirname)->data, &sdir) == 0)
+ if (! NILP (dirname) && stat (XSTRING (dirname)->data, &sdir) == 0)
values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil;
else /* if we can't tell, assume worst */
values[9] = Qt;
Qdirectory_files = intern ("directory-files");
Qfile_name_completion = intern ("file-name-completion");
Qfile_name_all_completions = intern ("file-name-all-completions");
+ Qfile_attributes = intern ("file-attributes");
defsubr (&Sdirectory_files);
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);
HCoop / bpt / emacs.git / blobdiff