/* File IO for GNU Emacs.
- Copyright (C) 1985,86,87,88,93,94,95,96,97,98,99,2000, 2001
+ Copyright (C) 1985,86,87,88,93,94,95,96,97,98,99,2000,01,2003
Free Software Foundation, Inc.
This file is part of GNU Emacs.
a new file with the same mode as the original */
int auto_save_mode_bits;
+/* The symbol bound to coding-system-for-read when
+ insert-file-contents is called for recovering a file. This is not
+ an actual coding system name, but just an indicator to tell
+ insert-file-contents to use `emacs-mule' with a special flag for
+ auto saving and recovering a file. */
+Lisp_Object Qauto_save_coding;
+
/* Coding system for file names, or nil if none. */
Lisp_Object Vfile_name_coding_system;
/* Functions to be called to process text properties in inserted file. */
Lisp_Object Vafter_insert_file_functions;
+/* Lisp function for setting buffer-file-coding-system and the
+ multibyteness of the current buffer after inserting a file. */
+Lisp_Object Qafter_insert_file_set_coding;
+
/* Functions to be called to create text property annotations for file. */
Lisp_Object Vwrite_region_annotate_functions;
+Lisp_Object Qwrite_region_annotate_functions;
/* During build_annotations, each time an annotation function is called,
this holds the annotations made by the previous functions. */
This is what happens in interactive use with M-x.
Fourth arg KEEP-TIME non-nil means give the new file the same
last-modified time as the old one. (This works on only some systems.)
-A prefix arg makes KEEP-TIME non-nil. */)
+A prefix arg makes KEEP-TIME non-nil.
+Also set the file modes of the target file to match the source file. */)
(file, newname, ok_if_already_exists, keep_time)
Lisp_Object file, newname, ok_if_already_exists, keep_time;
{
struct gcpro gcpro1;
GCPRO1 (filename);
- if (!NILP (Ffile_directory_p (filename)))
+ if (!NILP (Ffile_directory_p (filename))
+ && NILP (Ffile_symlink_p (filename)))
Fsignal (Qfile_error,
Fcons (build_string ("Removing old name: is a directory"),
Fcons (filename, Qnil)));
\f
DEFUN ("file-symlink-p", Ffile_symlink_p, Sfile_symlink_p, 1, 1, 0,
doc: /* Return non-nil if file FILENAME is the name of a symbolic link.
-The value is the name of the file to which it is linked.
+The value is the link target, as a string.
Otherwise returns nil. */)
(filename)
Lisp_Object filename;
{
-#ifdef S_IFLNK
- char *buf;
- int bufsize;
- int valsize;
- Lisp_Object val;
Lisp_Object handler;
CHECK_STRING (filename);
if (!NILP (handler))
return call2 (handler, Qfile_symlink_p, filename);
+#ifdef S_IFLNK
+ {
+ char *buf;
+ int bufsize;
+ int valsize;
+ Lisp_Object val;
+
filename = ENCODE_FILE (filename);
bufsize = 50;
xfree (buf);
val = DECODE_FILE (val);
return val;
+ }
#else /* not S_IFLNK */
return Qnil;
#endif /* not S_IFLNK */
}
}
- if (BEG < Z)
+ if (EQ (Vcoding_system_for_read, Qauto_save_coding))
+ {
+ /* We use emacs-mule for auto saving... */
+ setup_coding_system (Qemacs_mule, &coding);
+ /* ... but with the special flag to indicate to read in a
+ multibyte sequence for eight-bit-control char as is. */
+ coding.flags = 1;
+ coding.src_multibyte = 0;
+ coding.dst_multibyte
+ = !NILP (current_buffer->enable_multibyte_characters);
+ coding.eol_type = CODING_EOL_LF;
+ coding_system_decided = 1;
+ }
+ else if (BEG < Z)
{
/* Decide the coding system to use for reading the file now
because we can't use an optimized method for handling
buffer = Fget_buffer_create (build_string (" *code-converting-work*"));
buf = XBUFFER (buffer);
+ delete_all_overlays (buf);
buf->directory = current_buffer->directory;
buf->read_only = Qnil;
buf->filename = Qnil;
buf->undo_list = Qt;
- buf->overlays_before = Qnil;
- buf->overlays_after = Qnil;
+ eassert (buf->overlays_before == NULL);
+ eassert (buf->overlays_after == NULL);
set_buffer_internal (buf);
Ferase_buffer ();
Fcons (orig_filename, Qnil)));
}
+ if (set_coding_system)
+ Vlast_coding_system_used = coding.symbol;
+
+ if (! NILP (Ffboundp (Qafter_insert_file_set_coding)))
+ {
+ insval = call1 (Qafter_insert_file_set_coding, make_number (inserted));
+ if (! NILP (insval))
+ {
+ CHECK_NUMBER (insval);
+ inserted = XFASTINT (insval);
+ }
+ }
+
/* Decode file format */
if (inserted > 0)
{
current_buffer->undo_list = empty_undo_list_p ? Qnil : Qt;
}
- if (set_coding_system)
- Vlast_coding_system_used = coding.symbol;
-
/* Call after-change hooks for the inserted text, aside from the case
of normal visiting (not with REPLACE), which is done in a new buffer
"before" the buffer is changed. */
Lisp_Object val;
if (auto_saving)
- val = Qnil;
+ {
+ /* We use emacs-mule for auto saving... */
+ setup_coding_system (Qemacs_mule, coding);
+ /* ... but with the special flag to indicate not to strip off
+ leading code of eight-bit-control chars. */
+ coding->flags = 1;
+ goto done_setup_coding;
+ }
else if (!NILP (Vcoding_system_for_write))
{
val = Vcoding_system_for_write;
return val;
}
+ record_unwind_protect (save_restriction_restore, save_restriction_save ());
+
/* Special kludge to simplify auto-saving. */
if (NILP (start))
{
XSETFASTINT (start, BEG);
XSETFASTINT (end, Z);
+ Fwiden ();
}
record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
return Qnil;
if (!auto_saving)
- message_with_string ("Wrote %s", visit_file, 1);
+ message_with_string ((INTEGERP (append)
+ ? "Updated %s"
+ : ! NILP (append)
+ ? "Added to %s"
+ : "Wrote %s"),
+ visit_file, 1);
return Qnil;
}
Lisp_Object p, res;
struct gcpro gcpro1, gcpro2;
Lisp_Object original_buffer;
- int i;
+ int i, used_global = 0;
XSETBUFFER (original_buffer, current_buffer);
while (CONSP (p))
{
struct buffer *given_buffer = current_buffer;
+ if (EQ (Qt, XCAR (p)) && !used_global)
+ { /* Use the global value of the hook. */
+ Lisp_Object arg[2];
+ used_global = 1;
+ arg[0] = Fdefault_value (Qwrite_region_annotate_functions);
+ arg[1] = XCDR (p);
+ p = Fappend (2, arg);
+ continue;
+ }
Vwrite_region_annotations_so_far = annotations;
res = call2 (XCAR (p), start, end);
/* If the function makes a different buffer current,
Qwrite_region = intern ("write-region");
Qverify_visited_file_modtime = intern ("verify-visited-file-modtime");
Qset_visited_file_modtime = intern ("set-visited-file-modtime");
+ Qauto_save_coding = intern ("auto-save-coding");
staticpro (&Qexpand_file_name);
staticpro (&Qsubstitute_in_file_name);
staticpro (&Qwrite_region);
staticpro (&Qverify_visited_file_modtime);
staticpro (&Qset_visited_file_modtime);
+ staticpro (&Qauto_save_coding);
Qfile_name_history = intern ("file-name-history");
Fset (Qfile_name_history, Qnil);
staticpro (&Qformat_decode);
Qformat_annotate_function = intern ("format-annotate-function");
staticpro (&Qformat_annotate_function);
+ Qafter_insert_file_set_coding = intern ("after-insert-file-set-coding");
+ staticpro (&Qafter_insert_file_set_coding);
Qcar_less_than_car = intern ("car-less-than-car");
staticpro (&Qcar_less_than_car);
insert before the first byte written). The POSITIONs must be sorted into
increasing order. If there are several functions in the list, the several
lists are merged destructively. Alternatively, the function can return
-with a different buffer current and value nil.*/);
+with a different buffer current; in that case it should pay attention
+to the annotations returned by previous functions and listed in
+`write-region-annotations-so-far'.*/);
Vwrite_region_annotate_functions = Qnil;
+ staticpro (&Qwrite_region_annotate_functions);
+ Qwrite_region_annotate_functions
+ = intern ("write-region-annotate-functions");
DEFVAR_LISP ("write-region-annotations-so-far",
&Vwrite_region_annotations_so_far,