X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/97e98a56769de54b19b95de880b777b185bb2ca6..974aae61bbb8c05e0d0fc1a95b419fe596423fd8:/src/dired.c diff --git a/src/dired.c b/src/dired.c index 410729fe3d..55f96d2888 100644 --- a/src/dired.c +++ b/src/dired.c @@ -1,11 +1,12 @@ /* Lisp functions for making directory listings. - Copyright (C) 1985, 1986, 1993 Free Software Foundation, Inc. + Copyright (C) 1985, 1986, 1993, 1994, 1999, 2000, 2001, 2004, 2005 + 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, @@ -15,14 +16,25 @@ GNU General Public License for more details. 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., 51 Franklin Street, Fifth Floor, +Boston, MA 02110-1301, USA. */ +#include + #include #include #include -#include +#ifdef HAVE_PWD_H +#include +#endif +#ifndef VMS +#include +#endif + +#include "systime.h" +#include #ifdef VMS #include @@ -30,6 +42,10 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #endif +#ifdef HAVE_UNISTD_H +#include +#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 @@ -47,31 +63,47 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #include #define DIRENTRY struct dirent -#else +#else /* not SYSV_SYSTEM_DIR */ #ifdef NONSYSTEM_DIR_LIBRARY #include "ndir.h" #else /* not NONSYSTEM_DIR_LIBRARY */ +#ifdef MSDOS +#include +#else #include +#endif #endif /* not NONSYSTEM_DIR_LIBRARY */ +#include + +#ifndef MSDOS #define DIRENTRY struct direct 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" -/* A search buffer, with a fastmap allocated and ready to go. */ -extern struct re_pattern_buffer searchbuf; +/* Returns a search buffer, with a fastmap allocated and ready to go. */ +extern struct re_pattern_buffer *compile_pattern (); -#define min(a, b) ((a) < (b) ? (a) : (b)) +/* 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. */ @@ -81,199 +113,364 @@ extern struct re_pattern_buffer searchbuf; #endif extern int completion_ignore_case; -extern Lisp_Object Ffind_file_name_handler (); +extern Lisp_Object Vcompletion_regexp_list; 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)); -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; - int length; - Lisp_Object list, name, dirfilename; - Lisp_Object handler; + DIR *d = (DIR *) ((XINT (XCAR (dh)) << 16) + XINT (XCDR (dh))); + closedir (d); + return Qnil; +} - /* If the file name has special constructs in it, - call the corresponding file handler. */ - handler = Ffind_file_name_handler (dirname); - if (!NILP (handler)) - { - Lisp_Object args[6]; - - args[0] = handler; - args[1] = Qdirectory_files; - args[2] = dirname; - args[3] = full; - args[4] = match; - args[5] = nosort; - return Ffuncall (6, args); - } +/* 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. + In the latter case, ID_FORMAT is passed to Ffile_attributes. */ - { - struct gcpro gcpro1, gcpro2; +Lisp_Object +directory_files_internal (directory, full, match, nosort, attrs, id_format) + Lisp_Object directory, full, match, nosort; + int attrs; + Lisp_Object id_format; +{ + DIR *d; + 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 + /* 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; - } + list = encoded_directory = dirfilename = Qnil; + GCPRO5 (match, directory, list, dirfilename, encoded_directory); + 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 } - /* Now searchbuf is the compiled form of MATCH; don't call anything + /* 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 signalled while the directory stream is open, we + 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. */ - d = opendir (XSTRING (dirfilename)->data); - if (! d) - report_file_error ("Opening directory", Fcons (dirname, Qnil)); + retry: + + d = opendir (SDATA (dirfilename)); + if (d == NULL) + report_file_error ("Opening directory", Fcons (directory, Qnil)); - list = Qnil; - length = XSTRING (dirname)->size; + /* 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))); - /* Loop reading blocks */ - while (1) + directory_nbytes = SBYTES (directory); + re_match_object = Qt; + + /* Decide whether we need to add a directory separator. */ +#ifndef VMS + if (directory_nbytes == 0 + || !IS_ANY_SEP (SREF (directory, 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); + +#ifdef EAGAIN + if (dp == NULL && errno == EAGAIN) + continue; +#endif - if (!dp) break; - len = NAMLEN (dp); - if (dp->d_ino) + 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 = SBYTES (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, SDATA (name), 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 (SDATA (directory), SDATA (fullname), + directory_nbytes); + + if (needsep) + SSET (fullname, directory_nbytes, DIRECTORY_SEP); + + bcopy (SDATA (name), + SDATA (fullname) + directory_nbytes + needsep, + len); + + nchars = chars_in_text (SDATA (fullname), nbytes); + + /* Some bug somewhere. */ + if (nchars > nbytes) + abort (); + + STRING_SET_CHARS (fullname, nchars); + if (nchars == nbytes) + STRING_SET_UNIBYTE (fullname); + + 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, id_format); + + 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; + 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 (directory, Qdirectory_files); + if (!NILP (handler)) + return call5 (handler, Qdirectory_files, directory, + full, match, nosort); + + return directory_files_internal (directory, full, match, nosort, 0, Qnil); +} + +DEFUN ("directory-files-and-attributes", Fdirectory_files_and_attributes, + Sdirectory_files_and_attributes, 1, 5, 0, + doc: /* Return a list of names of files and their attributes in DIRECTORY. +There are four 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. +ID-FORMAT specifies the preferred format of attributes uid and gid, see +`file-attributes' for further documentation. */) + (directory, full, match, nosort, id_format) + Lisp_Object directory, full, match, nosort, id_format; +{ + Lisp_Object handler; + 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 (directory, Qdirectory_files_and_attributes); + if (!NILP (handler)) + return call6 (handler, Qdirectory_files_and_attributes, + directory, full, match, nosort, id_format); + + return directory_files_internal (directory, full, match, nosort, 1, id_format); } + 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 DIRECTORY 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; { Lisp_Object handler; - /* 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; + + /* 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 (dirname); + 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, - 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; { 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_all_completions); + if (!NILP (handler)) + return call3 (handler, Qfile_name_all_completions, file, directory); + /* If the file name has special constructs in it, call the corresponding file handler. */ - handler = Ffind_file_name_handler (dirname); + handler = Ffind_file_name_handler (file, Qfile_name_all_completions); if (!NILP (handler)) - return call3 (handler, Qfile_name_all_completions, file, dirname); + return call3 (handler, Qfile_name_all_completions, file, 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 file_name_completion (file, dirname, all_flag, ver_flag) Lisp_Object file, dirname; 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 (); @@ -287,11 +484,23 @@ file_name_completion (file, dirname, all_flag, ver_flag) 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. @@ -303,9 +512,16 @@ file_name_completion (file, dirname, all_flag, ver_flag) for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++) { - if (!(d = opendir (XSTRING (Fdirectory_file_name (dirname))->data))) + int inner_count = SPECPDL_INDEX (); + + d = opendir (SDATA (Fdirectory_file_name (encoded_dir))); + if (!d) report_file_error ("Opening directory", Fcons (dirname, Qnil)); + record_unwind_protect (directory_files_internal_unwind, + Fcons (make_number (((unsigned long) d) >> 16), + make_number (((unsigned long) d) & 0xffff))); + /* Loop reading blocks */ /* (att3b compiler bug requires do a null comparison this way) */ while (1) @@ -322,169 +538,298 @@ file_name_completion (file, dirname, all_flag, ver_flag) len = NAMLEN (dp); - 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)) + QUIT; + if (! DIRENTRY_NONEMPTY (dp) + || len < SCHARS (encoded_file) + || 0 <= scmp (dp->d_name, SDATA (encoded_file), + SCHARS (encoded_file))) 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 > SCHARS (encoded_file)) + /* 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 = SCHARS (elt) - 1; /* -1 for trailing / */ + if (elt_len <= 0) + continue; + p1 = SDATA (elt); + 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 > SCHARS (encoded_file)) /* 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; - skip = len - XSTRING (elt)->size; + elt = XCAR (tem); + if (!STRINGP (elt)) continue; + /* Need to encode ELT, since scmp compares unibyte + strings only. */ + elt = ENCODE_FILE (elt); + skip = len - SCHARS (elt); if (skip < 0) continue; if (0 <= scmp (dp->d_name + skip, - XSTRING (elt)->data, - XSTRING (elt)->size)) + SDATA (elt), + SCHARS (elt))) continue; break; } } - /* 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; + } + + /* Update computation of how much all possible completions match */ + + matchcount++; - if (all_flag || NILP (bestmatch)) + 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) { - 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) + name = DECODE_FILE (name); + bestmatch = Fcons (name, bestmatch); + } + else + { + bestmatch = name; + bestmatchsize = SCHARS (name); + } + } + else + { + compare = min (bestmatchsize, len); + p1 = SDATA (bestmatch); + 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 + < SCHARS (bestmatch)) + || + /* 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 + == SCHARS (bestmatch))) + && !bcmp (p2, SDATA (encoded_file), SCHARS (encoded_file)) + && bcmp (p1, SDATA (encoded_file), SCHARS (encoded_file)))) { - /* 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. */ - 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. */ - (((matchsize == len) - == - (matchsize + !!directoryp - == XSTRING (bestmatch)->size)) - /* If there is more than one exact match aside from - case, and one of them is exact including case, - prefer that one. */ - && !bcmp (p2, XSTRING (file)->data, XSTRING (file)->size) - && bcmp (p1, XSTRING (file)->data, XSTRING (file)->size))) - { - bestmatch = make_string (dp->d_name, len); - if (directoryp) - bestmatch = Ffile_name_as_directory (bestmatch); - } + 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 - && p1[matchsize] == '/') - matchsize++; - bestmatchsize = matchsize; } + + /* 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); + /* This closes the directory. */ + bestmatch = unbind_to (inner_count, bestmatch); } - unbind_to (count, Qnil); + UNGCPRO; + bestmatch = unbind_to (count, bestmatch); if (all_flag || NILP (bestmatch)) - return bestmatch; - if (matchcount == 1 && bestmatchsize == XSTRING (file)->size) + { + if (STRINGP (bestmatch)) + bestmatch = DECODE_FILE (bestmatch); + return bestmatch; + } + if (matchcount == 1 && bestmatchsize == SCHARS (file)) return Qt; - return Fsubstring (bestmatch, make_number (0), make_number (bestmatchsize)); - quit: - if (d) closedir (d); - Vquit_flag = Qnil; - return Fsignal (Qquit, Qnil); + 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; } +/* 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; struct stat *st_addr; { int len = NAMLEN (dp); - int pos = XSTRING (dirname)->size; + int pos = SCHARS (dirname); + int value; char *fullname = (char *) alloca (len + pos + 2); - bcopy (XSTRING (dirname)->data, fullname, pos); +#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 (SDATA (dirname), 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 */ } #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; + 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, dirname, 1, 1); + return file_name_completion (file, directory, 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) + 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; @@ -496,7 +841,7 @@ Returns nil if the file cannot be opened or if there is no version limit.") filename = Fexpand_file_name (filename, Qnil); fab = cc$rms_fab; xabfhc = cc$rms_xabfhc; - fab.fab$l_fna = XSTRING (filename)->data; + fab.fab$l_fna = SDATA (filename); fab.fab$b_fns = strlen (fab.fab$l_fna); fab.fab$l_xab = (char *) &xabfhc; status = sys$open (&fab, 0, 0); @@ -513,50 +858,75 @@ Returns nil if the file cannot be opened or if there is no version limit.") 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 (-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 exist, returns nil.") - (filename) - Lisp_Object filename; +DEFUN ("file-attributes", Ffile_attributes, Sfile_attributes, 1, 2, 0, + doc: /* Return a list of attributes of file FILENAME. +Value is nil if specified file cannot be opened. + +ID-FORMAT specifies the preferred format of attributes uid and gid (see +below) - valid values are 'string and 'integer. The latter is the default, +but we plan to change that, so you should specify a non-nil value for +ID-FORMAT if you use the returned uid or gid. + +Elements of the attribute list are: + 0. t for directory, string (name linked to) for symbolic link, or nil. + 1. Number of links to file. + 2. File uid as a string or an integer. If a string value cannot be + looked up, the integer value is returned. + 3. File gid, likewise. + 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. */) + (filename, id_format) + Lisp_Object filename, id_format; { Lisp_Object values[12]; - Lisp_Object dirname; + Lisp_Object encoded; struct stat s; + struct passwd *pw; + struct group *gr; +#if defined (BSD4_2) || defined (BSD4_3) + Lisp_Object dirname; struct stat sdir; +#endif char modes[10]; Lisp_Object handler; + struct gcpro gcpro1; filename = Fexpand_file_name (filename, Qnil); /* If the file name has special constructs in it, call the corresponding file handler. */ - handler = Ffind_file_name_handler (filename); + handler = Ffind_file_name_handler (filename, Qfile_attributes); if (!NILP (handler)) - return call2 (handler, Qfile_attributes, filename); + { /* Only pass the extra arg if it is used to help backward compatibility + with old file handlers which do not implement the new arg. --Stef */ + if (NILP (id_format)) + return call2 (handler, Qfile_attributes, filename); + else + return call3 (handler, Qfile_attributes, filename, id_format); + } - if (lstat (XSTRING (filename)->data, &s) < 0) + GCPRO1 (filename); + encoded = ENCODE_FILE (filename); + UNGCPRO; + + if (lstat (SDATA (encoded), &s) < 0) return Qnil; switch (s.st_mode & S_IFMT) @@ -571,45 +941,90 @@ If file does not exist, returns nil.") #endif } values[1] = make_number (s.st_nlink); - values[2] = make_number (s.st_uid); - values[3] = make_number (s.st_gid); + if (NILP (id_format) || EQ (id_format, Qinteger)) + { + values[2] = make_number (s.st_uid); + values[3] = make_number (s.st_gid); + } + else + { + pw = (struct passwd *) getpwuid (s.st_uid); + values[2] = (pw ? build_string (pw->pw_name) : make_number (s.st_uid)); + gr = (struct group *) getgrgid (s.st_gid); + values[3] = (gr ? build_string (gr->gr_name) : make_number (s.st_gid)); + } values[4] = make_time (s.st_atime); values[5] = make_time (s.st_mtime); values[6] = make_time (s.st_ctime); values[7] = make_number (s.st_size); - /* If the size is out of range, give back -1. */ + /* If the size is out of range for an integer, return a float. */ if (XINT (values[7]) != s.st_size) - XSETINT (values[7], -1); + values[7] = make_float ((double)s.st_size); + /* If the size is negative, and its type is long, convert it back to + positive. */ + if (s.st_size < 0 && sizeof (s.st_size) == sizeof (long)) + values[7] = make_float ((double) ((unsigned long) 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 compatibility' */ -#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 (! NILP (dirname) && stat (XSTRING (dirname)->data, &sdir) == 0) + if (! NILP (dirname)) + encoded = ENCODE_FILE (dirname); + if (! NILP (dirname) && stat (SDATA (encoded), &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); + 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)); +} +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); @@ -617,6 +1032,7 @@ syms_of_dired () #endif /* VMS */ defsubr (&Sfile_name_all_completions); defsubr (&Sfile_attributes); + defsubr (&Sfile_attributes_lessp); #ifdef VMS Qcompletion_ignore_case = intern ("completion-ignore-case"); @@ -624,8 +1040,13 @@ syms_of_dired () #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; } + +/* arch-tag: 1ac8deca-4d8f-4d41-ade9-089154d98c03 + (do not change this comment) */