X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=src%2Fdired.c;h=472133ed857872020dfe918ab544528e19a3d5b6;hb=02276b8e7e7b7e647493d52f77beb00d64951836;hp=c2309f1587888644506846ff5777ba9839c2bdd8;hpb=35adcaaeafb1fe93eaf00c39b48619e8f188ff3f;p=chise%2Fxemacs-chise.git- diff --git a/src/dired.c b/src/dired.c index c2309f1..472133e 100644 --- a/src/dired.c +++ b/src/dired.c @@ -31,6 +31,7 @@ Boston, MA 02111-1307, USA. */ #include "sysfile.h" #include "sysdir.h" #include "systime.h" +#include "sysdep.h" #include "syspwd.h" Lisp_Object Vcompletion_ignored_extensions; @@ -61,43 +62,43 @@ If FILES-ONLY is the symbol t, then only the "files" in the directory 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() @@ -118,9 +119,9 @@ If FILES-ONLY is the symbol t, then only the "files" in the directory /* Do this opendir after anything which might signal an error. 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)); @@ -139,38 +140,15 @@ If FILES-ONLY is the symbol t, then only the "files" in the directory { 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; @@ -180,9 +158,9 @@ If FILES-ONLY is the symbol t, then only the "files" in the directory { Lisp_Object name = - make_ext_string ((Bufbyte *)dp->d_name, len, FORMAT_FILENAME); + make_string ((Bufbyte *)dp->d_name, len); if (!NILP (full)) - name = concat2 (dirname, name); + name = concat2 (directory, name); list = Fcons (name, list); } @@ -197,79 +175,79 @@ If FILES-ONLY is the symbol t, then only the "files" in the directory } 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; @@ -306,7 +284,7 @@ file_name_completion_unwind (Lisp_Object locative) } 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 */ @@ -321,7 +299,7 @@ file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, Lisp_Object locative; struct gcpro gcpro1, gcpro2, gcpro3; - GCPRO3 (file, dirname, bestmatch); + GCPRO3 (file, directory, bestmatch); CHECK_STRING (file); @@ -334,7 +312,7 @@ file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, #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. @@ -355,9 +333,9 @@ file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, 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 */ @@ -387,7 +365,7 @@ file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, || 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); @@ -501,7 +479,7 @@ file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag, } } - /* If this dirname all matches, + /* If this directory all matches, see if implicit following slash does too. */ if (directoryp && compare == matchsize @@ -579,54 +557,52 @@ These are all user names which begin with USER. return user_name_completion (user, 1, NULL); } +struct user_cache { + char **data; + 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->data[i]); + xfree (cache->data); +} + static Lisp_Object user_name_completion_unwind (Lisp_Object locative) { - Lisp_Object obj1 = XCAR (locative); - Lisp_Object obj2 = XCDR (locative); - char **cache; - int clen, i; + int interrupted = !NILP (XCAR (locative)); - - if (!NILP (obj1) && !NILP (obj2)) + if (interrupted) { - /* clean up if interrupted building cache */ - cache = *(char ***)get_opaque_ptr (obj1); - clen = *(int *)get_opaque_ptr (obj2); - free_opaque_ptr (obj1); - free_opaque_ptr (obj2); - for (i = 0; i < clen; i++) - free (cache[i]); - free (cache); + endpwent (); + speed_up_interrupts (); + free_user_cache (&user_cache); } - free_cons (XCONS (locative)); - endpwent (); return Qnil; } -static char **user_cache; -static int user_cache_len; -static int user_cache_max; -static long user_cache_time; - #define USER_CACHE_REBUILD (24*60*60) /* 1 day, in seconds */ static Lisp_Object user_name_completion (Lisp_Object user, int all_flag, int *uniq) { /* This function can GC */ - struct passwd *pw; int matchcount = 0; Lisp_Object bestmatch = Qnil; Charcount bestmatchsize = 0; int speccount = specpdl_depth (); - int i, cmax, clen; - char **cache; Charcount user_name_length; - Lisp_Object locative; EMACS_TIME t; + int i; struct gcpro gcpro1, gcpro2; GCPRO2 (user, bestmatch); @@ -638,67 +614,48 @@ user_name_completion (Lisp_Object user, int all_flag, int *uniq) /* 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 && - EMACS_SECS (t) - user_cache_time > USER_CACHE_REBUILD) + if (user_cache.data && + (EMACS_SECS (t) - EMACS_SECS (user_cache.last_rebuild_time) + > USER_CACHE_REBUILD)) { - for (i = 0; i < user_cache_len; i++) - free (user_cache[i]); - free (user_cache); - user_cache = NULL; - user_cache_len = 0; - user_cache_max = 0; + free_user_cache (&user_cache); + xzero (user_cache); } - if (user_cache == NULL || user_cache_max <= 0) + if (!user_cache.data) { - cmax = 200; - clen = 0; - cache = (char **) malloc (cmax*sizeof (char *)); - + struct passwd *pwd; + Lisp_Object locative = noseeum_cons (Qt, Qnil); + slow_down_interrupts (); setpwent (); - locative = noseeum_cons (Qnil, Qnil); - XCAR (locative) = make_opaque_ptr ((void *) &cache); - XCDR (locative) = make_opaque_ptr ((void *) &clen); record_unwind_protect (user_name_completion_unwind, locative); - /* #### may need to slow down interrupts around call to getpwent - * below. at least the call to getpwnam in Fuser_full_name - * is documented as needing it on irix. */ - while ((pw = getpwent ())) + while ((pwd = getpwent ())) { - if (clen >= cmax) - { - cmax *= 2; - cache = (char **) realloc (cache, cmax*sizeof (char *)); - } - + Bufbyte *pwuser; QUIT; - - cache[clen++] = strdup (pw->pw_name); + DO_REALLOC (user_cache.data, user_cache.size, + user_cache.length + 1, char *); + GET_C_CHARPTR_INT_DATA_ALLOCA (pwd->pw_name, FORMAT_OS, pwuser); + user_cache.data[user_cache.length++] = xstrdup (pwuser); } - free_opaque_ptr (XCAR (locative)); - free_opaque_ptr (XCDR (locative)); + endpwent (); + speed_up_interrupts (); XCAR (locative) = Qnil; - XCDR (locative) = Qnil; - - unbind_to (speccount, Qnil); /* free locative cons, endpwent() */ - - user_cache_max = cmax; - user_cache_len = clen; - user_cache = cache; - user_cache_time = EMACS_SECS (t); + unbind_to (speccount, Qnil); /* free locative cons */ + EMACS_GET_TIME (user_cache.last_rebuild_time); } - for (i = 0; i < user_cache_len; i++) + for (i = 0; i < user_cache.length; i++) { - Bufbyte *d_name = (Bufbyte *) user_cache[i]; - Bytecount len = strlen ((char *) d_name); + Bufbyte *u_name = user_cache.data[i]; + Bytecount len = strlen ((char *) u_name); /* scmp() works in chars, not bytes, so we have to compute this: */ - Charcount cclen = bytecount_to_charcount (d_name, len); + Charcount cclen = bytecount_to_charcount (u_name, len); QUIT; - if (cclen < user_name_length || - 0 <= scmp (d_name, XSTRING_DATA (user), user_name_length)) + if (cclen < user_name_length + || 0 <= scmp_1 (u_name, XSTRING_DATA (user), user_name_length, 0)) continue; matchcount++; /* count matching completions */ @@ -709,7 +666,7 @@ user_name_completion (Lisp_Object user, int all_flag, int *uniq) struct gcpro ngcpro1; NGCPRO1 (name); /* This is a possible completion */ - name = make_string (d_name, len); + name = make_string (u_name, len); if (all_flag) { bestmatch = Fcons (name, bestmatch); @@ -725,37 +682,11 @@ user_name_completion (Lisp_Object user, int all_flag, int *uniq) { Charcount compare = min (bestmatchsize, cclen); Bufbyte *p1 = XSTRING_DATA (bestmatch); - Bufbyte *p2 = d_name; - Charcount matchsize = scmp (p1, p2, compare); + Bufbyte *p2 = u_name; + Charcount matchsize = scmp_1 (p1, p2, compare, 0); 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. */ - if ((matchsize == cclen - && matchsize < XSTRING_CHAR_LENGTH (bestmatch)) - || - /* If there is no exact match ignoring case, - prefer a match that does not change the case - of the input. */ - (((matchsize == cclen) - == - (matchsize == XSTRING_CHAR_LENGTH (bestmatch))) - /* If there is more than one exact match aside from - case, and one of them is exact including case, - prefer that one. */ - && 0 > scmp_1 (p2, XSTRING_DATA (user), - user_name_length, 0) - && 0 <= scmp_1 (p1, XSTRING_DATA (user), - user_name_length, 0))) - { - bestmatch = make_string (d_name, len); - } - } bestmatchsize = matchsize; } @@ -779,11 +710,11 @@ Lisp_Object make_directory_hash_table (CONST char *path) { DIR *d; - Lisp_Object hash = - make_lisp_hash_table (100, HASH_TABLE_NON_WEAK, HASH_TABLE_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))) { @@ -793,8 +724,10 @@ make_directory_hash_table (CONST char *path) Fputhash (make_string ((Bufbyte *) dp->d_name, len), Qt, hash); } closedir (d); + return hash; } - return hash; + else + return Qnil; } Lisp_Object @@ -831,13 +764,13 @@ If file does not exist, returns nil. { /* 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, @@ -856,7 +789,7 @@ If file does not exist, returns nil. } #ifdef BSD4_2 - dirname = Ffile_name_directory (filename); + directory = Ffile_name_directory (filename); #endif #ifdef MSDOS @@ -906,7 +839,7 @@ If file does not exist, returns nil. { 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; @@ -955,10 +888,4 @@ It is used by the functions `file-name-completion' and `file-name-all-completions'. */ ); Vcompletion_ignored_extensions = Qnil; - -#ifndef WINDOWSNT - user_cache = NULL; - user_cache_len = 0; - user_cache_max = 0; -#endif }