/* File IO for GNU Emacs.
- Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996,
+ 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+ 2005, 2006 Free Software Foundation, Inc.
This file is part of GNU Emacs.
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, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
#include <config.h>
#include "lisp.h"
#include "intervals.h"
#include "buffer.h"
-#include "charset.h"
+#include "character.h"
#include "coding.h"
#include "window.h"
expanding file names. This can be bound to / or \. */
Lisp_Object Vdirectory_sep_char;
+#ifdef HAVE_FSYNC
+/* Nonzero means skip the call to fsync in Fwrite-region. */
+int write_region_inhibit_fsync;
+#endif
+
extern Lisp_Object Vuser_login_name;
#ifdef WINDOWSNT
{
Lisp_Object errstring;
int errorno = errno;
+ char *str;
synchronize_system_messages_locale ();
- errstring = code_convert_string_norecord (build_string (strerror (errorno)),
+ str = strerror (errorno);
+ errstring = code_convert_string_norecord (make_unibyte_string (str,
+ strlen (str)),
Vlocale_coding_system, 0);
while (1)
Fset_marker (location, Qnil, Qnil);
return Qnil;
}
+
\f
Lisp_Object Qexpand_file_name;
Lisp_Object Qsubstitute_in_file_name;
#endif /* DOS_NT */
int length;
Lisp_Object handler, result;
+ int multibyte;
CHECK_STRING (name);
name = FILE_SYSTEM_CASE (name);
nm = SDATA (name);
+ multibyte = STRING_MULTIBYTE (name);
#ifdef DOS_NT
/* We will force directory separators to be either all \ or /, so make
if (index (nm, '/'))
{
nm = sys_translate_unix (nm);
- return make_specified_string (nm, -1, strlen (nm),
- STRING_MULTIBYTE (name));
+ return make_specified_string (nm, -1, strlen (nm), multibyte);
}
#endif /* VMS */
#ifdef DOS_NT
if (IS_DIRECTORY_SEP (nm[1]))
{
if (strcmp (nm, SDATA (name)) != 0)
- name = make_specified_string (nm, -1, strlen (nm),
- STRING_MULTIBYTE (name));
+ name = make_specified_string (nm, -1, strlen (nm), multibyte);
}
else
#endif
{
char temp[] = " :";
- name = make_specified_string (nm, -1, p - nm,
- STRING_MULTIBYTE (name));
+ name = make_specified_string (nm, -1, p - nm, multibyte);
temp[0] = DRIVE_LETTER (drive);
name = concat2 (build_string (temp), name);
}
#else /* not DOS_NT */
if (nm == SDATA (name))
return name;
- return make_specified_string (nm, -1, strlen (nm),
- STRING_MULTIBYTE (name));
+ return make_specified_string (nm, -1, strlen (nm), multibyte);
#endif /* not DOS_NT */
}
}
&& !newdir)
{
newdir = SDATA (default_directory);
+ multibyte |= STRING_MULTIBYTE (default_directory);
#ifdef DOS_NT
/* Note if special escape prefix is present, but remove for now. */
if (newdir[0] == '/' && newdir[1] == ':')
{
*o++ = *p++;
}
- else if (IS_DIRECTORY_SEP (p[0])
- && p[1] == '.'
+ else if (p[1] == '.'
&& (IS_DIRECTORY_SEP (p[2])
|| p[2] == 0))
{
*o++ = *p;
p += 2;
}
- else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
+ else if (p[1] == '.' && p[2] == '.'
/* `/../' is the "superroot" on certain file systems.
Turned off on DOS_NT systems because they have no
"superroot" and because this causes us to produce
++o;
p += 3;
}
- else if (p > target
- && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
- {
- /* Collapse multiple `/' in a row. */
- *o++ = *p++;
- while (IS_DIRECTORY_SEP (*p))
- ++p;
- }
+ else if (p > target && IS_DIRECTORY_SEP (p[1]))
+ /* Collapse multiple `/' in a row. */
+ p++;
else
{
*o++ = *p++;
CORRECT_DIR_SEPS (target);
#endif /* DOS_NT */
- result = make_specified_string (target, -1, o - target,
- STRING_MULTIBYTE (name));
+ result = make_specified_string (target, -1, o - target, multibyte);
/* Again look to see if the file name has special constructs in it
and perhaps call the corresponding file handler. This is needed
convert what we substitute into multibyte. */
while (*o)
{
- int c = unibyte_char_to_multibyte (*o++);
+ int c = *o++;
+ c = unibyte_char_to_multibyte (c);
x += CHAR_STRING (c, x);
}
}
"fCopy file: \nGCopy %s to file: \np\nP",
doc: /* Copy FILE to NEWNAME. Both args must be strings.
If NEWNAME names a directory, copy FILE there.
-Signals a `file-already-exists' error if file NEWNAME already exists,
-unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
-A number as third arg means request confirmation if NEWNAME already exists.
-This is what happens in interactive use with M-x.
-Always sets the file modes of the output file to match the input file.
+
+This function always sets the file modes of the output file to match
+the input file.
+
+The optional third argument OK-IF-ALREADY-EXISTS specifies what to do
+if file NEWNAME already exists. If OK-IF-ALREADY-EXISTS is nil, we
+signal a `file-already-exists' error without overwriting. If
+OK-IF-ALREADY-EXISTS is a number, we request confirmation from the user
+about overwriting; this is what happens in interactive use with M-x.
+Any other value for OK-IF-ALREADY-EXISTS means to overwrite the
+existing file.
Fourth arg KEEP-TIME non-nil means give the output file the same
last-modified time as the old one. (This works on only some systems.)
A prefix arg makes KEEP-TIME non-nil.
-The optional fifth arg MUSTBENEW, if non-nil, insists on a check
-for an existing file with the same name. If MUSTBENEW is `excl',
-that means to get an error if the file already exists; never overwrite.
-If MUSTBENEW is neither nil nor `excl', that means ask for
-confirmation before overwriting, but do go ahead and overwrite the file
-if the user confirms. */)
- (file, newname, ok_if_already_exists, keep_time, mustbenew)
- Lisp_Object file, newname, ok_if_already_exists, keep_time, mustbenew;
+If PRESERVE-UID-GID is non-nil, we try to transfer the
+uid and gid of FILE to NEWNAME. */)
+ (file, newname, ok_if_already_exists, keep_time, preserve_uid_gid)
+ Lisp_Object file, newname, ok_if_already_exists, keep_time;
+ Lisp_Object preserve_uid_gid;
{
int ifd, ofd, n;
char buf[16 * 1024];
CHECK_STRING (file);
CHECK_STRING (newname);
- if (!NILP (mustbenew) && !EQ (mustbenew, Qexcl))
- barf_or_query_if_file_exists (newname, "overwrite", 1, 0, 1);
-
if (!NILP (Ffile_directory_p (newname)))
newname = Fexpand_file_name (Ffile_name_nondirectory (file), newname);
else
copyable by us. */
input_file_statable_p = (fstat (ifd, &st) >= 0);
-#if !defined (DOS_NT) || __DJGPP__ > 1
+#if !defined (MSDOS) || __DJGPP__ > 1
if (out_st.st_mode != 0
&& st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
{
/* System's default file type was set to binary by _fmode in emacs.c. */
ofd = emacs_open (SDATA (encoded_newname),
O_WRONLY | O_TRUNC | O_CREAT
- | (EQ (mustbenew, Qexcl) ? O_EXCL : 0),
+ | (NILP (ok_if_already_exists) ? O_EXCL : 0),
S_IREAD | S_IWRITE);
#else /* not MSDOS */
ofd = emacs_open (SDATA (encoded_newname),
O_WRONLY | O_TRUNC | O_CREAT
- | (EQ (mustbenew, Qexcl) ? O_EXCL : 0),
+ | (NILP (ok_if_already_exists) ? O_EXCL : 0),
0666);
#endif /* not MSDOS */
#endif /* VMS */
report_file_error ("I/O error", Fcons (newname, Qnil));
immediate_quit = 0;
+#ifndef MSDOS
+ /* Preserve the original file modes, and if requested, also its
+ owner and group. */
+ if (input_file_statable_p)
+ {
+ if (! NILP (preserve_uid_gid))
+ fchown (ofd, st.st_uid, st.st_gid);
+ fchmod (ofd, st.st_mode & 07777);
+ }
+#endif /* not MSDOS */
+
/* Closing the output clobbers the file times on some systems. */
if (emacs_close (ofd) < 0)
report_file_error ("I/O error", Fcons (newname, Qnil));
Fcons (build_string ("Cannot set file date"),
Fcons (newname, Qnil)));
}
-#ifndef MSDOS
- chmod (SDATA (encoded_newname), st.st_mode & 07777);
-#else /* MSDOS */
+ }
+
+ emacs_close (ifd);
+
#if defined (__DJGPP__) && __DJGPP__ > 1
+ if (input_file_statable_p)
+ {
/* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
and if it can't, it tells so. Otherwise, under MSDOS we usually
get only the READ bit, which will make the copied file read-only,
so it's better not to chmod at all. */
if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
chmod (SDATA (encoded_newname), st.st_mode & 07777);
-#endif /* DJGPP version 2 or newer */
-#endif /* MSDOS */
}
-
- emacs_close (ifd);
-#endif /* WINDOWSNT */
+#endif /* DJGPP version 2 or newer */
+#endif /* not WINDOWSNT */
/* Discard the unwind protects. */
specpdl_ptr = specpdl + count;
internal_delete_file (filename)
Lisp_Object filename;
{
- return NILP (internal_condition_case_1 (Fdelete_file, filename,
- Qt, internal_delete_file_1));
+ Lisp_Object tem;
+ tem = internal_condition_case_1 (Fdelete_file, filename,
+ Qt, internal_delete_file_1);
+ return NILP (tem);
}
\f
DEFUN ("rename-file", Frename_file, Srename_file, 2, 3,
{
if (errno == EXDEV)
{
- struct stat data;
#ifdef S_IFLNK
symlink_target = Ffile_symlink_p (file);
if (! NILP (symlink_target))
NILP (ok_if_already_exists) ? Qnil : Qt);
else
#endif
- Fcopy_file (file, newname,
- /* We have already prompted if it was an integer,
- so don't have copy-file prompt again. */
- NILP (ok_if_already_exists) ? Qnil : Qt,
- Qt, Qnil);
-
- /* Preserve owner and group, if possible (if we are root). */
- if (stat (SDATA (encoded_file), &data) >= 0)
- chown (SDATA (encoded_file), data.st_uid, data.st_gid);
+ Fcopy_file (file, newname,
+ /* We have already prompted if it was an integer,
+ so don't have copy-file prompt again. */
+ NILP (ok_if_already_exists) ? Qnil : Qt,
+ Qt, Qt);
Fdelete_file (file);
}
}
DEFUN ("file-regular-p", Ffile_regular_p, Sfile_regular_p, 1, 1, 0,
- doc: /* Return t if file FILENAME is the name of a regular file.
-This is the sort of file that holds an ordinary stream of data bytes. */)
+ doc: /* Return t if FILENAME names a regular file.
+This is the sort of file that holds an ordinary stream of data bytes.
+Symbolic links to regular files count as regular files.
+See `file-symlink-p' to distinguish symlinks. */)
(filename)
Lisp_Object filename;
{
unsigned char buffer[1 << 14];
int replace_handled = 0;
int set_coding_system = 0;
- int coding_system_decided = 0;
+ Lisp_Object coding_system;
int read_quit = 0;
Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark;
int we_locked_file = 0;
CHECK_STRING (filename);
filename = Fexpand_file_name (filename, Qnil);
+ /* The value Qnil means that the coding system is not yet
+ decided. */
+ coding_system = Qnil;
+
/* If the file name has special constructs in it,
call the corresponding file handler. */
handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
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;
+ coding_system = Qutf_8_emacs;
+ setup_coding_system (coding_system, &coding);
+ /* Ensure we set Vlast_coding_system_used. */
+ set_coding_system = 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
`coding:' tag if the current buffer is not empty. */
- Lisp_Object val;
- val = Qnil;
-
if (!NILP (Vcoding_system_for_read))
- val = Vcoding_system_for_read;
+ coding_system = Vcoding_system_for_read;
else
{
/* Don't try looking inside a file for a coding system
insert_1_both (read_buf, nread, nread, 0, 0, 0);
TEMP_SET_PT_BOTH (BEG, BEG_BYTE);
- val = call2 (Vset_auto_coding_function,
- filename, make_number (nread));
+ coding_system = call2 (Vset_auto_coding_function,
+ filename, make_number (nread));
set_buffer_internal (prev);
/* Discard the unwind protect for recovering the
}
}
- if (NILP (val))
+ if (NILP (coding_system))
{
/* If we have not yet decided a coding system, check
file-coding-system-alist. */
- Lisp_Object args[6], coding_systems;
+ Lisp_Object args[6];
args[0] = Qinsert_file_contents, args[1] = orig_filename;
args[2] = visit, args[3] = beg, args[4] = end, args[5] = replace;
- coding_systems = Ffind_operation_coding_system (6, args);
- if (CONSP (coding_systems))
- val = XCAR (coding_systems);
+ coding_system = Ffind_operation_coding_system (6, args);
+ if (CONSP (coding_system))
+ coding_system = XCAR (coding_system);
}
}
- setup_coding_system (Fcheck_coding_system (val), &coding);
- /* Ensure we set Vlast_coding_system_used. */
- set_coding_system = 1;
+ if (NILP (coding_system))
+ coding_system = Qundecided;
+ else
+ CHECK_CODING_SYSTEM (coding_system);
- if (NILP (current_buffer->enable_multibyte_characters)
- && ! NILP (val))
+ if (NILP (current_buffer->enable_multibyte_characters))
/* We must suppress all character code conversion except for
end-of-line conversion. */
- setup_raw_text_coding_system (&coding);
+ coding_system = raw_text_coding_system (coding_system);
- coding.src_multibyte = 0;
- coding.dst_multibyte
- = !NILP (current_buffer->enable_multibyte_characters);
- coding_system_decided = 1;
+ setup_coding_system (coding_system, &coding);
+ /* Ensure we set Vlast_coding_system_used. */
+ set_coding_system = 1;
}
/* If requested, replace the accessible part of the buffer
and let the following if-statement handle the replace job. */
if (!NILP (replace)
&& BEGV < ZV
- && !(coding.common_flags & CODING_REQUIRE_DECODING_MASK))
+ && (NILP (coding_system)
+ || ! CODING_REQUIRE_DECODING (&coding)))
{
/* same_at_start and same_at_end count bytes,
because file access counts bytes
else if (nread == 0)
break;
- if (coding.type == coding_type_undecided)
- detect_coding (&coding, buffer, nread);
- if (coding.common_flags & CODING_REQUIRE_DECODING_MASK)
- /* We found that the file should be decoded somehow.
- Let's give up here. */
+ if (CODING_REQUIRE_DETECTION (&coding))
{
- giveup_match_end = 1;
- break;
+ coding_system = detect_coding_system (buffer, nread, nread, 1, 0,
+ coding_system);
+ setup_coding_system (coding_system, &coding);
}
- if (coding.eol_type == CODING_EOL_UNDECIDED)
- detect_eol (&coding, buffer, nread);
- if (coding.eol_type != CODING_EOL_UNDECIDED
- && coding.eol_type != CODING_EOL_LF)
- /* We found that the format of eol should be decoded.
+ if (CODING_REQUIRE_DECODING (&coding))
+ /* We found that the file should be decoded somehow.
Let's give up here. */
{
giveup_match_end = 1;
{
int same_at_start = BEGV_BYTE;
int same_at_end = ZV_BYTE;
+ int same_at_start_charpos;
+ int inserted_chars;
int overlap;
int bufpos;
- /* Make sure that the gap is large enough. */
- int bufsize = 2 * st.st_size;
- unsigned char *conversion_buffer = (unsigned char *) xmalloc (bufsize);
+ unsigned char *decoded;
int temp;
+ int this_count = SPECPDL_INDEX ();
+ int multibyte = ! NILP (current_buffer->enable_multibyte_characters);
+ Lisp_Object conversion_buffer;
+
+ conversion_buffer = code_conversion_save (1, multibyte);
/* First read the whole file, performing code conversion into
CONVERSION_BUFFER. */
if (lseek (fd, XINT (beg), 0) < 0)
- {
- xfree (conversion_buffer);
- report_file_error ("Setting file position",
- Fcons (orig_filename, Qnil));
- }
+ report_file_error ("Setting file position",
+ Fcons (orig_filename, Qnil));
total = st.st_size; /* Total bytes in the file. */
how_much = 0; /* Bytes read from file so far. */
inserted = 0; /* Bytes put into CONVERSION_BUFFER so far. */
unprocessed = 0; /* Bytes not processed in previous loop. */
+ GCPRO1 (conversion_buffer);
while (how_much < total)
{
+ /* We read one bunch by one (READ_BUF_SIZE bytes) to allow
+ quitting while reading a huge while. */
/* try is reserved in some compilers (Microsoft C) */
int trytry = min (total - how_much, READ_BUF_SIZE - unprocessed);
- unsigned char *destination = read_buf + unprocessed;
int this;
/* Allow quitting out of the actual I/O. */
immediate_quit = 1;
QUIT;
- this = emacs_read (fd, destination, trytry);
+ this = emacs_read (fd, read_buf + unprocessed, trytry);
immediate_quit = 0;
- if (this < 0 || this + unprocessed == 0)
+ if (this <= 0)
{
- how_much = this;
+ if (this < 0)
+ how_much = this;
break;
}
how_much += this;
- if (CODING_MAY_REQUIRE_DECODING (&coding))
- {
- int require, result;
-
- this += unprocessed;
-
- /* If we are using more space than estimated,
- make CONVERSION_BUFFER bigger. */
- require = decoding_buffer_size (&coding, this);
- if (inserted + require + 2 * (total - how_much) > bufsize)
- {
- bufsize = inserted + require + 2 * (total - how_much);
- conversion_buffer = (unsigned char *) xrealloc (conversion_buffer, bufsize);
- }
-
- /* Convert this batch with results in CONVERSION_BUFFER. */
- if (how_much >= total) /* This is the last block. */
- coding.mode |= CODING_MODE_LAST_BLOCK;
- if (coding.composing != COMPOSITION_DISABLED)
- coding_allocate_composition_data (&coding, BEGV);
- result = decode_coding (&coding, read_buf,
- conversion_buffer + inserted,
- this, bufsize - inserted);
-
- /* Save for next iteration whatever we didn't convert. */
- unprocessed = this - coding.consumed;
- bcopy (read_buf + coding.consumed, read_buf, unprocessed);
- if (!NILP (current_buffer->enable_multibyte_characters))
- this = coding.produced;
- else
- this = str_as_unibyte (conversion_buffer + inserted,
- coding.produced);
- }
-
- inserted += this;
+ BUF_SET_PT (XBUFFER (conversion_buffer),
+ BUF_Z (XBUFFER (conversion_buffer)));
+ decode_coding_c_string (&coding, read_buf, unprocessed + this,
+ conversion_buffer);
+ unprocessed = coding.carryover_bytes;
+ if (coding.carryover_bytes > 0)
+ bcopy (coding.carryover, read_buf, unprocessed);
}
+ UNGCPRO;
+ emacs_close (fd);
- /* At this point, INSERTED is how many characters (i.e. bytes)
- are present in CONVERSION_BUFFER.
- HOW_MUCH should equal TOTAL,
- or should be <= 0 if we couldn't read the file. */
+ /* At this point, HOW_MUCH should equal TOTAL, or should be <= 0
+ if we couldn't read the file. */
if (how_much < 0)
+ error ("IO error reading %s: %s",
+ SDATA (orig_filename), emacs_strerror (errno));
+
+ if (unprocessed > 0)
{
- xfree (conversion_buffer);
- coding_free_composition_data (&coding);
- if (how_much == -1)
- error ("IO error reading %s: %s",
- SDATA (orig_filename), emacs_strerror (errno));
- else if (how_much == -2)
- error ("maximum buffer size exceeded");
+ coding.mode |= CODING_MODE_LAST_BLOCK;
+ decode_coding_c_string (&coding, read_buf, unprocessed,
+ conversion_buffer);
+ coding.mode &= ~CODING_MODE_LAST_BLOCK;
}
- /* Compare the beginning of the converted file
- with the buffer text. */
+ decoded = BUF_BEG_ADDR (XBUFFER (conversion_buffer));
+ inserted = (BUF_Z_BYTE (XBUFFER (conversion_buffer))
+ - BUF_BEG_BYTE (XBUFFER (conversion_buffer)));
+
+ /* Compare the beginning of the converted string with the buffer
+ text. */
bufpos = 0;
while (bufpos < inserted && same_at_start < same_at_end
- && FETCH_BYTE (same_at_start) == conversion_buffer[bufpos])
+ && FETCH_BYTE (same_at_start) == decoded[bufpos])
same_at_start++, bufpos++;
- /* If the file matches the buffer completely,
+ /* If the file matches the head of buffer completely,
there's no need to replace anything. */
if (bufpos == inserted)
{
- xfree (conversion_buffer);
- coding_free_composition_data (&coding);
- emacs_close (fd);
specpdl_ptr--;
/* Truncate the buffer to the size of the file. */
del_range_byte (same_at_start, same_at_end, 0);
inserted = 0;
+
+ unbind_to (this_count, Qnil);
goto handled;
}
- /* Extend the start of non-matching text area to multibyte
- character boundary. */
+ /* Extend the start of non-matching text area to the previous
+ multibyte character boundary. */
if (! NILP (current_buffer->enable_multibyte_characters))
while (same_at_start > BEGV_BYTE
&& ! CHAR_HEAD_P (FETCH_BYTE (same_at_start)))
/* Compare with same_at_start to avoid counting some buffer text
as matching both at the file's beginning and at the end. */
while (bufpos > 0 && same_at_end > same_at_start
- && FETCH_BYTE (same_at_end - 1) == conversion_buffer[bufpos - 1])
+ && FETCH_BYTE (same_at_end - 1) == decoded[bufpos - 1])
same_at_end--, bufpos--;
- /* Extend the end of non-matching text area to multibyte
- character boundary. */
+ /* Extend the end of non-matching text area to the next
+ multibyte character boundary. */
if (! NILP (current_buffer->enable_multibyte_characters))
while (same_at_end < ZV_BYTE
&& ! CHAR_HEAD_P (FETCH_BYTE (same_at_end)))
/* Replace the chars that we need to replace,
and update INSERTED to equal the number of bytes
- we are taking from the file. */
+ we are taking from the decoded string. */
inserted -= (ZV_BYTE - same_at_end) + (same_at_start - BEGV_BYTE);
if (same_at_end != same_at_start)
}
/* Insert from the file at the proper position. */
SET_PT_BOTH (temp, same_at_start);
- insert_1 (conversion_buffer + same_at_start - BEGV_BYTE, inserted,
- 0, 0, 0);
- if (coding.cmp_data && coding.cmp_data->used)
- coding_restore_composition (&coding, Fcurrent_buffer ());
- coding_free_composition_data (&coding);
-
+ same_at_start_charpos
+ = buf_bytepos_to_charpos (XBUFFER (conversion_buffer),
+ same_at_start);
+ inserted_chars
+ = (buf_bytepos_to_charpos (XBUFFER (conversion_buffer),
+ same_at_start + inserted)
+ - same_at_start_charpos);
+ insert_from_buffer (XBUFFER (conversion_buffer),
+ same_at_start_charpos, inserted_chars, 0);
/* Set `inserted' to the number of inserted characters. */
inserted = PT - temp;
+ /* Set point before the inserted characters. */
+ SET_PT_BOTH (temp, same_at_start);
- xfree (conversion_buffer);
- emacs_close (fd);
- specpdl_ptr--;
+ unbind_to (this_count, Qnil);
goto handled;
}
inserted = 0;
/* Here, we don't do code conversion in the loop. It is done by
- code_convert_region after all data are read into the buffer. */
+ decode_coding_gap after all data are read into the buffer. */
{
int gap_size = GAP_SIZE;
#endif
Vdeactivate_mark = old_Vdeactivate_mark;
}
+ else
+ Vdeactivate_mark = Qt;
/* Make the text read part of the buffer. */
GAP_SIZE -= inserted;
notfound:
- if (! coding_system_decided)
+ if (NILP (coding_system))
{
/* The coding system is not yet decided. Decide it by an
optimized method for handling `coding:' tag.
Note that we can get here only if the buffer was empty
before the insertion. */
- Lisp_Object val;
- val = Qnil;
if (!NILP (Vcoding_system_for_read))
- val = Vcoding_system_for_read;
+ coding_system = Vcoding_system_for_read;
else
{
/* Since we are sure that the current buffer was empty
before the insertion, we can toggle
enable-multibyte-characters directly here without taking
- care of marker adjustment and byte combining problem. By
- this way, we can run Lisp program safely before decoding
- the inserted text. */
+ care of marker adjustment. By this way, we can run Lisp
+ program safely before decoding the inserted text. */
Lisp_Object unwind_data;
int count = SPECPDL_INDEX ();
unwind_data = Fcons (current_buffer->enable_multibyte_characters,
Fcons (current_buffer->undo_list,
Fcurrent_buffer ()));
- current_buffer->enable_multibyte_characters = Qnil;
+ current_buffer->enable_multibyte_characters = Qnil;
current_buffer->undo_list = Qt;
record_unwind_protect (decide_coding_unwind, unwind_data);
if (inserted > 0 && ! NILP (Vset_auto_coding_function))
{
- val = call2 (Vset_auto_coding_function,
- filename, make_number (inserted));
+ coding_system = call2 (Vset_auto_coding_function,
+ filename, make_number (inserted));
}
- if (NILP (val))
+ if (NILP (coding_system))
{
/* If the coding system is not yet decided, check
file-coding-system-alist. */
- Lisp_Object args[6], coding_systems;
+ Lisp_Object args[6];
args[0] = Qinsert_file_contents, args[1] = orig_filename;
args[2] = visit, args[3] = beg, args[4] = end, args[5] = Qnil;
- coding_systems = Ffind_operation_coding_system (6, args);
- if (CONSP (coding_systems))
- val = XCAR (coding_systems);
+ coding_system = Ffind_operation_coding_system (6, args);
+ if (CONSP (coding_system))
+ coding_system = XCAR (coding_system);
}
unbind_to (count, Qnil);
inserted = Z_BYTE - BEG_BYTE;
}
- /* The following kludgy code is to avoid some compiler bug.
- We can't simply do
- setup_coding_system (val, &coding);
- on some system. */
- {
- struct coding_system temp_coding;
- setup_coding_system (Fcheck_coding_system (val), &temp_coding);
- bcopy (&temp_coding, &coding, sizeof coding);
- }
- /* Ensure we set Vlast_coding_system_used. */
- set_coding_system = 1;
+ if (NILP (coding_system))
+ coding_system = Qundecided;
+ else
+ CHECK_CODING_SYSTEM (coding_system);
- if (NILP (current_buffer->enable_multibyte_characters)
- && ! NILP (val))
+ if (NILP (current_buffer->enable_multibyte_characters))
/* We must suppress all character code conversion except for
end-of-line conversion. */
- setup_raw_text_coding_system (&coding);
- coding.src_multibyte = 0;
- coding.dst_multibyte
- = !NILP (current_buffer->enable_multibyte_characters);
+ coding_system = raw_text_coding_system (coding_system);
+ setup_coding_system (coding_system, &coding);
+ /* Ensure we set Vlast_coding_system_used. */
+ set_coding_system = 1;
}
- if (!NILP (visit)
- /* Can't do this if part of the buffer might be preserved. */
- && NILP (replace)
- && (coding.type == coding_type_no_conversion
- || coding.type == coding_type_raw_text))
+ if (!NILP (visit))
{
- /* Visiting a file with these coding system makes the buffer
- unibyte. */
- current_buffer->enable_multibyte_characters = Qnil;
- coding.dst_multibyte = 0;
+ /* When we visit a file by raw-text, we change the buffer to
+ unibyte. */
+ if (CODING_FOR_UNIBYTE (&coding)
+ /* Can't do this if part of the buffer might be preserved. */
+ && NILP (replace))
+ /* Visiting a file with these coding system makes the buffer
+ unibyte. */
+ current_buffer->enable_multibyte_characters = Qnil;
}
- if (inserted > 0 || coding.type == coding_type_ccl)
+ coding.dst_multibyte = ! NILP (current_buffer->enable_multibyte_characters);
+ if (CODING_MAY_REQUIRE_DECODING (&coding)
+ && (inserted > 0 || CODING_REQUIRE_FLUSHING (&coding)))
{
- if (CODING_MAY_REQUIRE_DECODING (&coding))
- {
- code_convert_region (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted,
- &coding, 0, 0);
- inserted = coding.produced_char;
- }
- else
- adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted,
- inserted);
+ move_gap_both (PT, PT_BYTE);
+ GAP_SIZE += inserted;
+ ZV_BYTE -= inserted;
+ Z_BYTE -= inserted;
+ ZV -= inserted;
+ Z -= inserted;
+ decode_coding_gap (&coding, inserted, inserted);
+ inserted = coding.produced_char;
+ coding_system = CODING_ID_NAME (coding.id);
}
+ else if (inserted > 0)
+ adjust_after_insert (PT, PT_BYTE, PT + inserted, PT_BYTE + inserted,
+ inserted);
/* Now INSERTED is measured in characters. */
/* Use the conversion type to determine buffer-file-type
(find-buffer-file-type is now used to help determine the
conversion). */
- if ((coding.eol_type == CODING_EOL_UNDECIDED
- || coding.eol_type == CODING_EOL_LF)
+ if ((VECTORP (CODING_ID_EOL_TYPE (coding.id))
+ || EQ (CODING_ID_EOL_TYPE (coding.id), Qunix))
&& ! CODING_REQUIRE_DECODING (&coding))
current_buffer->buffer_file_type = Qt;
else
}
if (set_coding_system)
- Vlast_coding_system_used = coding.symbol;
+ Vlast_coding_system_used = coding_system;
if (! NILP (Ffboundp (Qafter_insert_file_set_coding)))
{
}
\f
static Lisp_Object build_annotations P_ ((Lisp_Object, Lisp_Object));
-static Lisp_Object build_annotations_2 P_ ((Lisp_Object, Lisp_Object,
- Lisp_Object, Lisp_Object));
/* If build_annotations switched buffers, switch back to BUF.
Kill the temporary buffer that was selected in the meantime.
/* Decide the coding-system to encode the data with. */
-void
+static Lisp_Object
choose_write_coding_system (start, end, filename,
append, visit, lockname, coding)
Lisp_Object start, end, filename, append, visit, lockname;
if (auto_saving
&& NILP (Fstring_equal (current_buffer->filename,
current_buffer->auto_save_file_name)))
- {
- /* 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;
- }
+ val = Qutf_8_emacs;
else if (!NILP (Vcoding_system_for_write))
{
val = Vcoding_system_for_write;
val = XCDR (coding_systems);
}
- if (NILP (val)
- && !NILP (current_buffer->buffer_file_coding_system))
+ if (NILP (val))
{
/* If we still have not decided a coding system, use the
default value of buffer-file-coding-system. */
using_default_coding = 1;
}
+ if (! NILP (val) && ! force_raw_text)
+ {
+ Lisp_Object spec, attrs;
+
+ CHECK_CODING_SYSTEM_GET_SPEC (val, spec);
+ attrs = AREF (spec, 0);
+ if (EQ (CODING_ATTR_TYPE (attrs), Qraw_text))
+ force_raw_text = 1;
+ }
+
if (!force_raw_text
&& !NILP (Ffboundp (Vselect_safe_coding_system_function)))
/* Confirm that VAL can surely encode the current region. */
val = call5 (Vselect_safe_coding_system_function,
start, end, val, Qnil, filename);
- setup_coding_system (Fcheck_coding_system (val), coding);
- if (coding->eol_type == CODING_EOL_UNDECIDED
- && !using_default_coding)
- {
- if (! EQ (default_buffer_file_coding.symbol,
- buffer_defaults.buffer_file_coding_system))
- setup_coding_system (buffer_defaults.buffer_file_coding_system,
- &default_buffer_file_coding);
- if (default_buffer_file_coding.eol_type != CODING_EOL_UNDECIDED)
- {
- Lisp_Object subsidiaries;
-
- coding->eol_type = default_buffer_file_coding.eol_type;
- subsidiaries = Fget (coding->symbol, Qeol_type);
- if (VECTORP (subsidiaries)
- && XVECTOR (subsidiaries)->size == 3)
- coding->symbol
- = XVECTOR (subsidiaries)->contents[coding->eol_type];
- }
- }
+ /* If the decided coding-system doesn't specify end-of-line
+ format, we use that of
+ `default-buffer-file-coding-system'. */
+ if (! using_default_coding
+ && ! NILP (buffer_defaults.buffer_file_coding_system))
+ val = (coding_inherit_eol_type
+ (val, buffer_defaults.buffer_file_coding_system));
+ /* If we decide not to encode text, use `raw-text' or one of its
+ subsidiaries. */
if (force_raw_text)
- setup_raw_text_coding_system (coding);
- goto done_setup_coding;
+ val = raw_text_coding_system (val);
}
- setup_coding_system (Fcheck_coding_system (val), coding);
+ val = coding_inherit_eol_type (val, Qnil);
+ setup_coding_system (val, coding);
- done_setup_coding:
if (!STRINGP (start) && !NILP (current_buffer->selective_display))
coding->mode |= CODING_MODE_SELECTIVE_DISPLAY;
+ return val;
}
DEFUN ("write-region", Fwrite_region, Swrite_region, 3, 7,
int save_errno = 0;
const unsigned char *fn;
struct stat st;
- int tem;
int count = SPECPDL_INDEX ();
int count1;
#ifdef VMS
if (!NILP (start) && !STRINGP (start))
validate_region (&start, &end);
+ visit_file = Qnil;
GCPRO5 (start, filename, visit, visit_file, lockname);
filename = Fexpand_file_name (filename, Qnil);
We used to make this choice before calling build_annotations, but that
leads to problems when a write-annotate-function takes care of
unsavable chars (as was the case with X-Symbol). */
- choose_write_coding_system (start, end, filename,
- append, visit, lockname, &coding);
- Vlast_coding_system_used = coding.symbol;
-
- given_buffer = current_buffer;
- if (! STRINGP (start))
- {
- annotations = build_annotations_2 (start, end,
- coding.pre_write_conversion, annotations);
- if (current_buffer != given_buffer)
- {
- XSETFASTINT (start, BEGV);
- XSETFASTINT (end, ZV);
- }
- }
+ Vlast_coding_system_used
+ = choose_write_coding_system (start, end, filename,
+ append, visit, lockname, &coding);
#ifdef CLASH_DETECTION
if (!auto_saving)
if (GPT > BEG && GPT_ADDR[-1] != '\n')
move_gap (find_next_newline (GPT, 1));
#else
+#if 0
+ /* The new encoding routine doesn't require the following. */
+
/* Whether VMS or not, we must move the gap to the next of newline
when we must put designation sequences at beginning of line. */
if (INTEGERP (start)
move_gap_both (PT, PT_BYTE);
SET_PT_BOTH (opoint, opoint_byte);
}
+#endif
#endif
failure = 0;
}
else if (XINT (start) != XINT (end))
{
- tem = CHAR_TO_BYTE (XINT (start));
-
- if (XINT (start) < GPT)
- {
- failure = 0 > a_write (desc, Qnil, XINT (start),
- min (GPT, XINT (end)) - XINT (start),
- &annotations, &coding);
- save_errno = errno;
- }
-
- if (XINT (end) > GPT && !failure)
- {
- tem = max (XINT (start), GPT);
- failure = 0 > a_write (desc, Qnil, tem , XINT (end) - tem,
- &annotations, &coding);
- save_errno = errno;
- }
+ failure = 0 > a_write (desc, Qnil,
+ XINT (start), XINT (end) - XINT (start),
+ &annotations, &coding);
+ save_errno = errno;
}
else
{
{
/* We have to flush out a data. */
coding.mode |= CODING_MODE_LAST_BLOCK;
- failure = 0 > e_write (desc, Qnil, 0, 0, &coding);
+ failure = 0 > e_write (desc, Qnil, 1, 1, &coding);
save_errno = errno;
}
Disk full in NFS may be reported here. */
/* mib says that closing the file will try to write as fast as NFS can do
it, and that means the fsync here is not crucial for autosave files. */
- if (!auto_saving && fsync (desc) < 0)
+ if (!auto_saving && !write_region_inhibit_fsync && fsync (desc) < 0)
{
/* If fsync fails with EINTR, don't treat that as serious. */
if (errno != EINTR)
return annotations;
}
-static Lisp_Object
-build_annotations_2 (start, end, pre_write_conversion, annotations)
- Lisp_Object start, end, pre_write_conversion, annotations;
-{
- struct gcpro gcpro1;
- Lisp_Object res;
-
- GCPRO1 (annotations);
- /* At last, do the same for the function PRE_WRITE_CONVERSION
- implied by the current coding-system. */
- if (!NILP (pre_write_conversion))
- {
- struct buffer *given_buffer = current_buffer;
- Vwrite_region_annotations_so_far = annotations;
- res = call2 (pre_write_conversion, start, end);
- Flength (res);
- annotations = (current_buffer != given_buffer
- ? res
- : merge (annotations, res, Qcar_less_than_car));
- }
-
- UNGCPRO;
- return annotations;
-}
\f
/* Write to descriptor DESC the NCHARS chars starting at POS of STRING.
If STRING is nil, POS is the character position in the current buffer.
return 0;
}
-#ifndef WRITE_BUF_SIZE
-#define WRITE_BUF_SIZE (16 * 1024)
-#endif
/* Write text in the range START and END into descriptor DESC,
encoding them with coding system CODING. If STRING is nil, START
int start, end;
struct coding_system *coding;
{
- register char *addr;
- register int nbytes;
- char buf[WRITE_BUF_SIZE];
- int return_val = 0;
-
- if (start >= end)
- coding->composing = COMPOSITION_DISABLED;
- if (coding->composing != COMPOSITION_DISABLED)
- coding_save_composition (coding, start, end, string);
-
if (STRINGP (string))
{
- addr = SDATA (string);
- nbytes = SBYTES (string);
- coding->src_multibyte = STRING_MULTIBYTE (string);
- }
- else if (start < end)
- {
- /* It is assured that the gap is not in the range START and END-1. */
- addr = CHAR_POS_ADDR (start);
- nbytes = CHAR_TO_BYTE (end) - CHAR_TO_BYTE (start);
- coding->src_multibyte
- = !NILP (current_buffer->enable_multibyte_characters);
- }
- else
- {
- addr = "";
- nbytes = 0;
- coding->src_multibyte = 1;
+ start = 0;
+ end = SCHARS (string);
}
/* We used to have a code for handling selective display here. But,
now it is handled within encode_coding. */
- while (1)
- {
- int result;
- result = encode_coding (coding, addr, buf, nbytes, WRITE_BUF_SIZE);
- if (coding->produced > 0)
+ while (start < end)
+ {
+ if (STRINGP (string))
{
- coding->produced -= emacs_write (desc, buf, coding->produced);
- if (coding->produced)
+ coding->src_multibyte = SCHARS (string) < SBYTES (string);
+ if (CODING_REQUIRE_ENCODING (coding))
{
- return_val = -1;
- break;
+ encode_coding_object (coding, string,
+ start, string_char_to_byte (string, start),
+ end, string_char_to_byte (string, end), Qt);
+ }
+ else
+ {
+ coding->dst_object = string;
+ coding->consumed_char = SCHARS (string);
+ coding->produced = SBYTES (string);
}
}
- nbytes -= coding->consumed;
- addr += coding->consumed;
- if (result == CODING_FINISH_INSUFFICIENT_SRC
- && nbytes > 0)
+ else
{
- /* The source text ends by an incomplete multibyte form.
- There's no way other than write it out as is. */
- nbytes -= emacs_write (desc, addr, nbytes);
- if (nbytes)
+ int start_byte = CHAR_TO_BYTE (start);
+ int end_byte = CHAR_TO_BYTE (end);
+
+ coding->src_multibyte = (end - start) < (end_byte - start_byte);
+ if (CODING_REQUIRE_ENCODING (coding))
{
- return_val = -1;
- break;
+ encode_coding_object (coding, Fcurrent_buffer (),
+ start, start_byte, end, end_byte, Qt);
+ }
+ else
+ {
+ coding->dst_object = Qnil;
+ coding->dst_pos_byte = start_byte;
+ if (start >= GPT || end <= GPT)
+ {
+ coding->consumed_char = end - start;
+ coding->produced = end_byte - start_byte;
+ }
+ else
+ {
+ coding->consumed_char = GPT - start;
+ coding->produced = GPT_BYTE - start_byte;
+ }
}
}
- if (nbytes <= 0)
- break;
+
+ if (coding->produced > 0)
+ {
+ coding->produced -=
+ emacs_write (desc,
+ STRINGP (coding->dst_object)
+ ? SDATA (coding->dst_object)
+ : BYTE_POS_ADDR (coding->dst_pos_byte),
+ coding->produced);
+
+ if (coding->produced)
+ return -1;
+ }
start += coding->consumed_char;
- if (coding->cmp_data)
- coding_adjust_composition_offset (coding, start);
}
- if (coding->cmp_data)
- coding_free_composition_data (coding);
-
- return return_val;
+ return 0;
}
\f
DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime,
Lisp_Object args[3], msg;
int i, nbytes;
struct gcpro gcpro1;
+ char *msgbuf;
+ USE_SAFE_ALLOCA;
ring_bell ();
msg = Fformat (3, args);
GCPRO1 (msg);
nbytes = SBYTES (msg);
+ SAFE_ALLOCA (msgbuf, char *, nbytes);
+ bcopy (SDATA (msg), msgbuf, nbytes);
for (i = 0; i < 3; ++i)
{
if (i == 0)
- message2 (SDATA (msg), nbytes, STRING_MULTIBYTE (msg));
+ message2 (msgbuf, nbytes, STRING_MULTIBYTE (msg));
else
- message2_nolog (SDATA (msg), nbytes, STRING_MULTIBYTE (msg));
+ message2_nolog (msgbuf, nbytes, STRING_MULTIBYTE (msg));
Fsleep_for (make_number (1), Qnil);
}
+ SAFE_FREE ();
UNGCPRO;
return Qnil;
}
}
static Lisp_Object
-do_auto_save_unwind (stream) /* used as unwind-protect function */
- Lisp_Object stream;
+do_auto_save_unwind (arg) /* used as unwind-protect function */
+ Lisp_Object arg;
{
+ FILE *stream = (FILE *) XSAVE_VALUE (arg)->pointer;
auto_saving = 0;
- if (!NILP (stream))
- fclose ((FILE *) (XFASTINT (XCAR (stream)) << 16
- | XFASTINT (XCDR (stream))));
+ if (stream != NULL)
+ fclose (stream);
return Qnil;
}
int auto_saved = 0;
int do_handled_files;
Lisp_Object oquit;
- FILE *stream;
- Lisp_Object lispstream;
+ FILE *stream = NULL;
int count = SPECPDL_INDEX ();
int orig_minibuffer_auto_raise = minibuffer_auto_raise;
int old_message_p = 0;
}
stream = fopen (SDATA (listfile), "w");
- if (stream != NULL)
- {
- /* Arrange to close that file whether or not we get an error.
- Also reset auto_saving to 0. */
- lispstream = Fcons (Qnil, Qnil);
- XSETCARFASTINT (lispstream, (EMACS_UINT)stream >> 16);
- XSETCDRFASTINT (lispstream, (EMACS_UINT)stream & 0xffff);
- }
- else
- lispstream = Qnil;
- }
- else
- {
- stream = NULL;
- lispstream = Qnil;
}
- record_unwind_protect (do_auto_save_unwind, lispstream);
+ record_unwind_protect (do_auto_save_unwind,
+ make_save_value (stream, 0));
record_unwind_protect (do_auto_save_unwind_1,
make_number (minibuffer_auto_raise));
minibuffer_auto_raise = 0;
#endif
{
/* Must do it the hard (and slow) way. */
+ Lisp_Object tem;
GCPRO3 (all, comp, specdir);
count = SPECPDL_INDEX ();
record_unwind_protect (read_file_name_cleanup, current_buffer->directory);
current_buffer->directory = realdir;
for (comp = Qnil; CONSP (all); all = XCDR (all))
- if (!NILP (call1 (Vread_file_name_predicate, XCAR (all))))
- comp = Fcons (XCAR (all), comp);
+ {
+ tem = call1 (Vread_file_name_predicate, XCAR (all));
+ if (!NILP (tem))
+ comp = Fcons (XCAR (all), comp);
+ }
unbind_to (count, Qnil);
UNGCPRO;
}
a non-nil value. */);
Vauto_save_list_file_name = Qnil;
+#ifdef HAVE_FSYNC
+ DEFVAR_BOOL ("write-region-inhibit-fsync", &write_region_inhibit_fsync,
+ doc: /* *Non-nil means don't call fsync in `write-region'.
+This variable affects calls to `write-region' as well as save commands.
+A non-nil value may result in data loss! */);
+ write_region_inhibit_fsync = 0;
+#endif
+
defsubr (&Sfind_file_name_handler);
defsubr (&Sfile_name_directory);
defsubr (&Sfile_name_nondirectory);