/* File IO for GNU Emacs.
-Copyright (C) 1985-1988, 1993-2012 Free Software Foundation, Inc.
+Copyright (C) 1985-1988, 1993-2012 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <setjmp.h>
#include <unistd.h>
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
-#include <ctype.h>
#include <errno.h>
#ifdef HAVE_LIBSELINUX
#include <selinux/context.h>
#endif
+#include <c-ctype.h>
+
#include "lisp.h"
#include "intervals.h"
-#include "buffer.h"
#include "character.h"
+#include "buffer.h"
#include "coding.h"
#include "window.h"
#include "blockinput.h"
#define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z')
#endif
#ifdef WINDOWSNT
-#define IS_DRIVE(x) isalpha ((unsigned char) (x))
+#define IS_DRIVE(x) c_isalpha (x)
#endif
/* Need to lower-case the drive letter, or else expanded
filenames will sometimes compare unequal, because
`expand-file-name' doesn't always down-case the drive letter. */
-#define DRIVE_LETTER(x) (tolower ((unsigned char) (x)))
+#define DRIVE_LETTER(x) c_tolower (x)
#endif
#include "systime.h"
+#include <stat-time.h>
#ifdef HPUX
#include <netio.h>
#include "commands.h"
-#ifndef FILE_SYSTEM_CASE
-#define FILE_SYSTEM_CASE(filename) (filename)
-#endif
-
-/* Nonzero during writing of auto-save files */
-static int auto_saving;
+/* True during writing of auto-save files. */
+static bool auto_saving;
-/* Nonzero umask during creation of auto-save directories */
-static int auto_saving_dir_umask;
+/* Nonzero umask during creation of auto-save directories. */
+static mode_t auto_saving_dir_umask;
/* Set by auto_save_1 to mode of original file so Fwrite_region will create
- a new file with the same mode as the original */
-static int auto_save_mode_bits;
+ a new file with the same mode as the original. */
+static mode_t auto_save_mode_bits;
-/* Set by auto_save_1 if an error occurred during the last auto-save. */
-static int auto_save_error_occurred;
+/* Set by auto_save_1 if an error occurred during the last auto-save. */
+static bool auto_save_error_occurred;
/* The symbol bound to coding-system-for-read when
insert-file-contents is called for recovering a file. This is not
which gives a list of operations it handles.. */
static Lisp_Object Qoperations;
-/* Lisp functions for translating file formats */
+/* Lisp functions for translating file formats. */
static Lisp_Object Qformat_decode, Qformat_annotate_function;
/* Lisp function for setting buffer-file-coding-system and the
static Lisp_Object Qcar_less_than_car;
-static Lisp_Object Fmake_symbolic_link (Lisp_Object, Lisp_Object, Lisp_Object);
-static int a_write (int, Lisp_Object, ptrdiff_t, ptrdiff_t,
- Lisp_Object *, struct coding_system *);
-static int e_write (int, Lisp_Object, ptrdiff_t, ptrdiff_t,
- struct coding_system *);
+static bool a_write (int, Lisp_Object, ptrdiff_t, ptrdiff_t,
+ Lisp_Object *, struct coding_system *);
+static bool e_write (int, Lisp_Object, ptrdiff_t, ptrdiff_t,
+ struct coding_system *);
\f
void
synchronize_system_messages_locale ();
str = strerror (errorno);
- errstring = code_convert_string_norecord (make_unibyte_string (str,
- strlen (str)),
+ errstring = code_convert_string_norecord (build_unibyte_string (str),
Vlocale_coding_system, 0);
while (1)
call the corresponding file handler. */
handler = Ffind_file_name_handler (filename, Qfile_name_directory);
if (!NILP (handler))
- return call2 (handler, Qfile_name_directory, filename);
+ {
+ Lisp_Object handled_name = call2 (handler, Qfile_name_directory,
+ filename);
+ return STRINGP (handled_name) ? handled_name : Qnil;
+ }
- filename = FILE_SYSTEM_CASE (filename);
#ifdef DOS_NT
- beg = (char *) alloca (SBYTES (filename) + 1);
+ beg = alloca (SBYTES (filename) + 1);
memcpy (beg, SSDATA (filename), SBYTES (filename) + 1);
#else
beg = SSDATA (filename);
if (p == beg + 4 && IS_DIRECTORY_SEP (*beg) && beg[1] == ':')
{
- strncpy (res, beg, 2);
+ memcpy (res, beg, 2);
beg += 2;
r += 2;
}
- if (getdefdir (toupper ((unsigned char) *beg) - 'A' + 1, r))
+ if (getdefdir (c_toupper (*beg) - 'A' + 1, r))
{
if (!IS_DIRECTORY_SEP (res[strlen (res) - 1]))
strcat (res, "/");
call the corresponding file handler. */
handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory);
if (!NILP (handler))
- return call2 (handler, Qfile_name_nondirectory, filename);
+ {
+ Lisp_Object handled_name = call2 (handler, Qfile_name_nondirectory,
+ filename);
+ if (STRINGP (handled_name))
+ return handled_name;
+ error ("Invalid handler in `file-name-handler-alist'");
+ }
beg = SSDATA (filename);
end = p = beg + SBYTES (filename);
call the corresponding file handler. */
handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
if (!NILP (handler))
- return call2 (handler, Qunhandled_file_name_directory, filename);
+ {
+ Lisp_Object handled_name = call2 (handler, Qunhandled_file_name_directory,
+ filename);
+ return STRINGP (handled_name) ? handled_name : Qnil;
+ }
return Ffile_name_directory (filename);
}
-\f
-static char *
-file_name_as_directory (char *out, const char *in)
-{
- ptrdiff_t len = strlen (in);
+/* Convert from file name SRC of length SRCLEN to directory name
+ in DST. On UNIX, just make sure there is a terminating /.
+ Return the length of DST. */
- if (len == 0)
+static ptrdiff_t
+file_name_as_directory (char *dst, const char *src, ptrdiff_t srclen)
+{
+ if (srclen == 0)
{
- out[0] = '.';
- out[1] = '/';
- out[2] = 0;
- return out;
+ dst[0] = '.';
+ dst[1] = '/';
+ dst[2] = '\0';
+ return 2;
}
- strcpy (out, in);
+ strcpy (dst, src);
- /* For Unix syntax, Append a slash if necessary */
- if (!IS_DIRECTORY_SEP (out[len - 1]))
+ if (!IS_DIRECTORY_SEP (dst[srclen - 1]))
{
- out[len] = DIRECTORY_SEP;
- out[len + 1] = '\0';
+ dst[srclen] = DIRECTORY_SEP;
+ dst[srclen + 1] = '\0';
+ srclen++;
}
#ifdef DOS_NT
- dostounix_filename (out);
+ dostounix_filename (dst);
#endif
- return out;
+ return srclen;
}
DEFUN ("file-name-as-directory", Ffile_name_as_directory,
(Lisp_Object file)
{
char *buf;
+ ptrdiff_t length;
Lisp_Object handler;
CHECK_STRING (file);
call the corresponding file handler. */
handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
if (!NILP (handler))
- return call2 (handler, Qfile_name_as_directory, file);
+ {
+ Lisp_Object handled_name = call2 (handler, Qfile_name_as_directory,
+ file);
+ if (STRINGP (handled_name))
+ return handled_name;
+ error ("Invalid handler in `file-name-handler-alist'");
+ }
- buf = (char *) alloca (SBYTES (file) + 10);
- file_name_as_directory (buf, SSDATA (file));
- return make_specified_string (buf, -1, strlen (buf),
- STRING_MULTIBYTE (file));
+ buf = alloca (SBYTES (file) + 10);
+ length = file_name_as_directory (buf, SSDATA (file), SBYTES (file));
+ return make_specified_string (buf, -1, length, STRING_MULTIBYTE (file));
}
\f
-/*
- * Convert from directory name to filename.
- * On UNIX, it's simple: just make sure there isn't a terminating /
-
- * Value is nonzero if the string output is different from the input.
- */
+/* Convert from directory name SRC of length SRCLEN to
+ file name in DST. On UNIX, just make sure there isn't
+ a terminating /. Return the length of DST. */
-static int
-directory_file_name (char *src, char *dst)
+static ptrdiff_t
+directory_file_name (char *dst, char *src, ptrdiff_t srclen)
{
- ptrdiff_t slen;
-
- slen = strlen (src);
-
/* Process as Unix format: just remove any final slash.
But leave "/" unchanged; do not change it to "". */
strcpy (dst, src);
- if (slen > 1
- && IS_DIRECTORY_SEP (dst[slen - 1])
+ if (srclen > 1
+ && IS_DIRECTORY_SEP (dst[srclen - 1])
#ifdef DOS_NT
- && !IS_ANY_SEP (dst[slen - 2])
+ && !IS_ANY_SEP (dst[srclen - 2])
#endif
)
- dst[slen - 1] = 0;
+ {
+ dst[srclen - 1] = 0;
+ srclen--;
+ }
#ifdef DOS_NT
dostounix_filename (dst);
#endif
- return 1;
+ return srclen;
}
DEFUN ("directory-file-name", Fdirectory_file_name, Sdirectory_file_name,
(Lisp_Object directory)
{
char *buf;
+ ptrdiff_t length;
Lisp_Object handler;
CHECK_STRING (directory);
call the corresponding file handler. */
handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
if (!NILP (handler))
- return call2 (handler, Qdirectory_file_name, directory);
+ {
+ Lisp_Object handled_name = call2 (handler, Qdirectory_file_name,
+ directory);
+ if (STRINGP (handled_name))
+ return handled_name;
+ error ("Invalid handler in `file-name-handler-alist'");
+ }
- buf = (char *) alloca (SBYTES (directory) + 20);
- directory_file_name (SSDATA (directory), buf);
- return make_specified_string (buf, -1, strlen (buf),
- STRING_MULTIBYTE (directory));
+ buf = alloca (SBYTES (directory) + 20);
+ length = directory_file_name (buf, SSDATA (directory), SBYTES (directory));
+ return make_specified_string (buf, -1, length, STRING_MULTIBYTE (directory));
}
static const char make_temp_name_tbl[64] =
which has no existing file. To make this work, PREFIX should be
an absolute file name.
- BASE64_P non-zero means add the pid as 3 characters in base64
+ BASE64_P means add the pid as 3 characters in base64
encoding. In this case, 6 characters will be added to PREFIX to
form the file name. Otherwise, if Emacs is running on a system
with long file names, add the pid as a decimal number.
generated. */
Lisp_Object
-make_temp_name (Lisp_Object prefix, int base64_p)
+make_temp_name (Lisp_Object prefix, bool base64_p)
{
Lisp_Object val;
int len, clen;
struct passwd *pw;
#ifdef DOS_NT
int drive = 0;
- int collapse_newdir = 1;
- int is_escaped = 0;
+ bool collapse_newdir = 1;
+ bool is_escaped = 0;
#endif /* DOS_NT */
ptrdiff_t length;
- Lisp_Object handler, result;
- int multibyte;
+ Lisp_Object handler, result, handled_name;
+ bool multibyte;
Lisp_Object hdir;
CHECK_STRING (name);
call the corresponding file handler. */
handler = Ffind_file_name_handler (name, Qexpand_file_name);
if (!NILP (handler))
- return call3 (handler, Qexpand_file_name, name, default_directory);
+ {
+ handled_name = call3 (handler, Qexpand_file_name,
+ name, default_directory);
+ if (STRINGP (handled_name))
+ return handled_name;
+ error ("Invalid handler in `file-name-handler-alist'");
+ }
+
/* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
if (NILP (default_directory))
{
handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
if (!NILP (handler))
- return call3 (handler, Qexpand_file_name, name, default_directory);
+ {
+ handled_name = call3 (handler, Qexpand_file_name,
+ name, default_directory);
+ if (STRINGP (handled_name))
+ return handled_name;
+ error ("Invalid handler in `file-name-handler-alist'");
+ }
}
{
UNGCPRO;
}
}
- name = FILE_SYSTEM_CASE (name);
multibyte = STRING_MULTIBYTE (name);
if (multibyte != STRING_MULTIBYTE (default_directory))
{
}
}
- /* Make a local copy of nm[] to protect it from GC in DECODE_FILE below. */
- nm = (char *) alloca (SBYTES (name) + 1);
+ /* Make a local copy of nm[] to protect it from GC in DECODE_FILE below. */
+ nm = alloca (SBYTES (name) + 1);
memcpy (nm, SSDATA (name), SBYTES (name) + 1);
#ifdef DOS_NT
if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
nm++;
- /* Discard any previous drive specifier if nm is now in UNC format. */
+ /* Discard any previous drive specifier if nm is now in UNC format. */
if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
{
drive = 0;
/* If it turns out that the filename we want to return is just a
suffix of FILENAME, we don't need to go through and edit
things; we just need to construct a new string using data
- starting at the middle of FILENAME. If we set lose to a
- non-zero value, that means we've discovered that we can't do
- that cool trick. */
- int lose = 0;
+ starting at the middle of FILENAME. If we set LOSE, that
+ means we've discovered that we can't do that cool trick. */
+ bool lose = 0;
char *p = nm;
while (*p)
}
else
#endif
- /* drive must be set, so this is okay */
+ /* Drive must be set, so this is okay. */
if (strcmp (nm - 2, SSDATA (name)) != 0)
{
char temp[] = " :";
if (!(newdir = egetenv ("HOME")))
newdir = "";
nm++;
- /* egetenv may return a unibyte string, which will bite us since
+ /* `egetenv' may return a unibyte string, which will bite us since
we expect the directory to be multibyte. */
tem = build_string (newdir);
if (!STRING_MULTIBYTE (tem))
use the drive's current directory as the prefix if needed. */
if (!newdir && drive)
{
- /* Get default directory if needed to make nm absolute. */
+ /* Get default directory if needed to make nm absolute. */
char *adir = NULL;
if (!IS_DIRECTORY_SEP (nm[0]))
{
adir = alloca (MAXPATHLEN + 1);
- if (!getdefdir (toupper (drive) - 'A' + 1, adir))
+ if (!getdefdir (c_toupper (drive) - 'A' + 1, adir))
adir = NULL;
}
if (!adir)
{
- /* Either nm starts with /, or drive isn't mounted. */
+ /* Either nm starts with /, or drive isn't mounted. */
adir = alloca (4);
adir[0] = DRIVE_LETTER (drive);
adir[1] = ':';
#endif /* DOS_NT */
/* Finally, if no prefix has been specified and nm is not absolute,
- then it must be expanded relative to default_directory. */
+ then it must be expanded relative to default_directory. */
if (1
#ifndef DOS_NT
- /* /... alone is not absolute on DOS and Windows. */
+ /* /... alone is not absolute on DOS and Windows. */
&& !IS_DIRECTORY_SEP (nm[0])
#endif
#ifdef WINDOWSNT
#ifdef DOS_NT
if (newdir)
{
- /* First ensure newdir is an absolute name. */
+ /* First ensure newdir is an absolute name. */
if (
/* Detect MSDOS file names with drive specifiers. */
! (IS_DRIVE (newdir[0])
Because of the admonition against calling expand-file-name
when we have pointers into lisp strings, we accomplish this
indirectly by prepending newdir to nm if necessary, and using
- cwd (or the wd of newdir's drive) as the new newdir. */
+ cwd (or the wd of newdir's drive) as the new newdir. */
char *adir;
if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1]))
{
}
if (!IS_DIRECTORY_SEP (nm[0]))
{
- char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
- file_name_as_directory (tmp, newdir);
+ ptrdiff_t newlen = strlen (newdir);
+ char *tmp = alloca (newlen + strlen (nm) + 2);
+ file_name_as_directory (tmp, newdir, newlen);
strcat (tmp, nm);
nm = tmp;
}
adir = alloca (MAXPATHLEN + 1);
if (drive)
{
- if (!getdefdir (toupper (drive) - 'A' + 1, adir))
+ if (!getdefdir (c_toupper (drive) - 'A' + 1, adir))
newdir = "/";
}
else
newdir = adir;
}
- /* Strip off drive name from prefix, if present. */
+ /* Strip off drive name from prefix, if present. */
if (IS_DRIVE (newdir[0]) && IS_DEVICE_SEP (newdir[1]))
{
drive = newdir[0];
/* Get rid of any slash at the end of newdir, unless newdir is
just / or // (an incomplete UNC name). */
length = strlen (newdir);
+ tlen = length + 1;
if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
#ifdef WINDOWSNT
&& !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
#endif
)
{
- char *temp = (char *) alloca (length);
+ char *temp = alloca (length);
memcpy (temp, newdir, length - 1);
temp[length - 1] = 0;
+ length--;
newdir = temp;
}
- tlen = length + 1;
}
else
- tlen = 0;
+ {
+ length = 0;
+ tlen = 0;
+ }
- /* Now concatenate the directory and name to new space in the stack frame */
+ /* Now concatenate the directory and name to new space in the stack frame. */
tlen += strlen (nm) + 1;
#ifdef DOS_NT
/* Reserve space for drive specifier and escape prefix, since either
or both may need to be inserted. (The Microsoft x86 compiler
produces incorrect code if the following two lines are combined.) */
- target = (char *) alloca (tlen + 4);
+ target = alloca (tlen + 4);
target += 4;
#else /* not DOS_NT */
- target = (char *) alloca (tlen);
+ target = alloca (tlen);
#endif /* not DOS_NT */
*target = 0;
strcpy (target, newdir);
}
else
- file_name_as_directory (target, newdir);
+ file_name_as_directory (target, newdir, length);
}
strcat (target, nm);
}
#ifdef DOS_NT
- /* At last, set drive name. */
+ /* At last, set drive name. */
#ifdef WINDOWSNT
/* Except for network file name. */
if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1])))
#endif /* WINDOWSNT */
{
- if (!drive) abort ();
+ if (!drive) emacs_abort ();
target -= 2;
target[0] = DRIVE_LETTER (drive);
target[1] = ':';
and perhaps call the corresponding file handler. This is needed
for filenames such as "/foo/../user@host:/bar/../baz". Expanding
the ".." component gives us "/user@host:/bar/../baz" which needs
- to be expanded again. */
+ to be expanded again. */
handler = Ffind_file_name_handler (result, Qexpand_file_name);
if (!NILP (handler))
- return call3 (handler, Qexpand_file_name, result, default_directory);
+ {
+ handled_name = call3 (handler, Qexpand_file_name,
+ result, default_directory);
+ if (STRINGP (handled_name))
+ return handled_name;
+ error ("Invalid handler in `file-name-handler-alist'");
+ }
return result;
}
ptrdiff_t tlen;
unsigned char *target;
struct passwd *pw;
- int lose;
CHECK_STRING (name);
nm = SDATA (name);
If no /./ or /../ we can return right away. */
if (nm[0] == '/')
{
+ bool lose = 0;
p = nm;
- lose = 0;
while (*p)
{
if (p[0] == '/' && p[1] == '/'
}
}
- /* Now determine directory to start with and put it in NEWDIR */
+ /* Now determine directory to start with and put it in NEWDIR. */
newdir = 0;
}
else /* ~user/filename */
{
- /* Get past ~ to user */
+ /* Get past ~ to user. */
unsigned char *user = nm + 1;
- /* Find end of name. */
+ /* Find end of name. */
unsigned char *ptr = (unsigned char *) strchr (user, '/');
ptrdiff_t len = ptr ? ptr - user : strlen (user);
- /* Copy the user name into temp storage. */
- o = (unsigned char *) alloca (len + 1);
+ /* Copy the user name into temp storage. */
+ o = alloca (len + 1);
memcpy (o, user, len);
o[len] = 0;
- /* Look up the user name. */
+ /* Look up the user name. */
BLOCK_INPUT;
pw = (struct passwd *) getpwnam (o + 1);
UNBLOCK_INPUT;
newdir = SDATA (defalt);
}
- /* Now concatenate the directory and name to new space in the stack frame */
+ /* Now concatenate the directory and name to new space in the stack frame. */
tlen = (newdir ? strlen (newdir) + 1 : 0) + strlen (nm) + 1;
- target = (unsigned char *) alloca (tlen);
+ target = alloca (tlen);
*target = 0;
if (newdir)
strcat (target, nm);
- /* Now canonicalize by removing /. and /foo/.. if they appear */
+ /* Now canonicalize by removing /. and /foo/.. if they appear. */
p = target;
o = target;
#endif
\f
/* If /~ or // appears, discard everything through first slash. */
-static int
+static bool
file_name_absolute_p (const char *filename)
{
return
)
{
for (s = p; *s && (!IS_DIRECTORY_SEP (*s)); s++);
- if (p[0] == '~' && s > p + 1) /* we've got "/~something/" */
+ if (p[0] == '~' && s > p + 1) /* We've got "/~something/". */
{
char *o = alloca (s - p + 1);
struct passwd *pw;
those `/' is discarded. */)
(Lisp_Object filename)
{
- char *nm;
-
- register char *s, *p, *o, *x, *endp;
+ char *nm, *s, *p, *o, *x, *endp;
char *target = NULL;
int total = 0;
- int substituted = 0;
- int multibyte;
+ bool substituted = 0;
+ bool multibyte;
char *xnm;
Lisp_Object handler;
call the corresponding file handler. */
handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
if (!NILP (handler))
- return call2 (handler, Qsubstitute_in_file_name, filename);
+ {
+ Lisp_Object handled_name = call2 (handler, Qsubstitute_in_file_name,
+ filename);
+ if (STRINGP (handled_name))
+ return handled_name;
+ error ("Invalid handler in `file-name-handler-alist'");
+ }
/* Always work on a copy of the string, in case GC happens during
decode of environment variables, causing the original Lisp_String
data to be relocated. */
- nm = (char *) alloca (SBYTES (filename) + 1);
+ nm = alloca (SBYTES (filename) + 1);
memcpy (nm, SDATA (filename), SBYTES (filename) + 1);
#ifdef DOS_NT
(make_specified_string (p, -1, endp - p, multibyte));
/* See if any variables are substituted into the string
- and find the total length of their values in `total' */
+ and find the total length of their values in `total'. */
for (p = nm; p != endp;)
if (*p != '$')
goto badsubst;
else if (*p == '$')
{
- /* "$$" means a single "$" */
+ /* "$$" means a single "$". */
p++;
total -= 1;
substituted = 1;
else
{
o = p;
- while (p != endp && (isalnum (*p) || *p == '_')) p++;
+ while (p != endp && (c_isalnum (*p) || *p == '_')) p++;
s = p;
}
- /* Copy out the variable name */
- target = (char *) alloca (s - o + 1);
- strncpy (target, o, s - o);
+ /* Copy out the variable name. */
+ target = alloca (s - o + 1);
+ memcpy (target, o, s - o);
target[s - o] = 0;
#ifdef DOS_NT
strupr (target); /* $home == $HOME etc. */
#endif /* DOS_NT */
- /* Get variable value */
+ /* Get variable value. */
o = egetenv (target);
if (o)
{
env variables twice should be acceptable. Note that
decoding may cause a garbage collect. */
Lisp_Object orig, decoded;
- orig = make_unibyte_string (o, strlen (o));
+ orig = build_unibyte_string (o);
decoded = DECODE_FILE (orig);
total += SBYTES (decoded);
substituted = 1;
if (!substituted)
return filename;
- /* If substitution required, recopy the string and do it */
- /* Make space in stack frame for the new copy */
- xnm = (char *) alloca (SBYTES (filename) + total + 1);
+ /* If substitution required, recopy the string and do it. */
+ /* Make space in stack frame for the new copy. */
+ xnm = alloca (SBYTES (filename) + total + 1);
x = xnm;
- /* Copy the rest of the name through, replacing $ constructs with values */
+ /* Copy the rest of the name through, replacing $ constructs with values. */
for (p = nm; *p;)
if (*p != '$')
*x++ = *p++;
else
{
o = p;
- while (p != endp && (isalnum (*p) || *p == '_')) p++;
+ while (p != endp && (c_isalnum (*p) || *p == '_')) p++;
s = p;
}
- /* Copy out the variable name */
- target = (char *) alloca (s - o + 1);
- strncpy (target, o, s - o);
+ /* Copy out the variable name. */
+ target = alloca (s - o + 1);
+ memcpy (target, o, s - o);
target[s - o] = 0;
#ifdef DOS_NT
strupr (target); /* $home == $HOME etc. */
#endif /* DOS_NT */
- /* Get variable value */
+ /* Get variable value. */
o = egetenv (target);
if (!o)
{
orig = make_unibyte_string (o, orig_length);
decoded = DECODE_FILE (orig);
decoded_length = SBYTES (decoded);
- strncpy (x, SSDATA (decoded), decoded_length);
+ memcpy (x, SDATA (decoded), decoded_length);
x += decoded_length;
/* If environment variable needed decoding, return value
needs to be multibyte. */
if (decoded_length != orig_length
- || strncmp (SSDATA (decoded), o, orig_length))
+ || memcmp (SDATA (decoded), o, orig_length))
multibyte = 1;
}
}
stat behaves differently depending! */
if (SCHARS (absname) > 1
&& IS_DIRECTORY_SEP (SREF (absname, SBYTES (absname) - 1))
- && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname)-2)))
+ && !IS_DEVICE_SEP (SREF (absname, SBYTES (absname) - 2)))
/* We cannot take shortcuts; they might be wrong for magic file names. */
absname = Fdirectory_file_name (absname);
return absname;
}
\f
/* Signal an error if the file ABSNAME already exists.
- If INTERACTIVE is nonzero, ask the user whether to proceed,
+ If INTERACTIVE, ask the user whether to proceed,
and bypass the error if the user says to go ahead.
QUERYSTRING is a name for the action that is being considered
to alter the file.
If the file does not exist, STATPTR->st_mode is set to 0.
If STATPTR is null, we don't store into it.
- If QUICK is nonzero, we ask for y or n, not yes or no. */
+ If QUICK, ask for y or n, not yes or no. */
static void
barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
- int interactive, struct stat *statptr, int quick)
+ bool interactive, struct stat *statptr,
+ bool quick)
{
- register Lisp_Object tem, encoded_filename;
+ Lisp_Object tem, encoded_filename;
struct stat statbuf;
struct gcpro gcpro1;
encoded_filename = ENCODE_FILE (absname);
- /* stat is a good way to tell whether the file exists,
+ /* `stat' is a good way to tell whether the file exists,
regardless of what access permissions it has. */
if (lstat (SSDATA (encoded_filename), &statbuf) >= 0)
{
Lisp_Object handler;
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4;
ptrdiff_t count = SPECPDL_INDEX ();
- int input_file_statable_p;
+ bool input_file_statable_p;
Lisp_Object encoded_file, encoded_newname;
#if HAVE_LIBSELINUX
security_context_t con;
- int fail, conlength = 0;
+ int conlength = 0;
#endif
encoded_file = encoded_newname = Qnil;
DWORD attributes;
char * filename;
- EMACS_GET_TIME (now);
filename = SDATA (encoded_newname);
/* Ensure file is writable while its modified time is set. */
attributes = GetFileAttributes (filename);
SetFileAttributes (filename, attributes & ~FILE_ATTRIBUTE_READONLY);
- if (set_file_times (filename, now, now))
+ now = current_emacs_time ();
+ if (set_file_times (-1, filename, now, now))
{
/* Restore original attributes. */
SetFileAttributes (filename, attributes);
S_IREAD | S_IWRITE);
#else /* not MSDOS */
{
- int new_mask = 0666;
+ mode_t new_mask = 0666;
if (input_file_statable_p)
{
if (!NILP (preserve_uid_gid))
owner and group. */
if (input_file_statable_p)
{
- int mode_mask = 07777;
+ mode_t mode_mask = 07777;
if (!NILP (preserve_uid_gid))
{
/* Attempt to change owner and group. If that doesn't work
#if HAVE_LIBSELINUX
if (conlength > 0)
{
- /* Set the modified context back to the file. */
- fail = fsetfilecon (ofd, con);
- if (fail)
+ /* Set the modified context back to the file. */
+ bool fail = fsetfilecon (ofd, con) != 0;
+ /* See http://debbugs.gnu.org/11245 for ENOTSUP. */
+ if (fail && errno != ENOTSUP)
report_file_error ("Doing fsetfilecon", Fcons (newname, Qnil));
freecon (con);
}
#endif
- /* Closing the output clobbers the file times on some systems. */
- if (emacs_close (ofd) < 0)
- report_file_error ("I/O error", Fcons (newname, Qnil));
-
if (input_file_statable_p)
{
if (!NILP (keep_time))
{
- EMACS_TIME atime, mtime;
- EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
- EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
- if (set_file_times (SSDATA (encoded_newname),
- atime, mtime))
+ EMACS_TIME atime = get_stat_atime (&st);
+ EMACS_TIME mtime = get_stat_mtime (&st);
+ if (set_file_times (ofd, SSDATA (encoded_newname), atime, mtime))
xsignal2 (Qfile_date_error,
build_string ("Cannot set file date"), newname);
}
}
+ if (emacs_close (ofd) < 0)
+ report_file_error ("I/O error", Fcons (newname, Qnil));
+
emacs_close (ifd);
#ifdef MSDOS
return Qt;
}
-/* Delete file FILENAME, returning 1 if successful and 0 if failed.
+/* Delete file FILENAME.
This ignores `delete-by-moving-to-trash'. */
-int
+void
internal_delete_file (Lisp_Object filename)
{
- Lisp_Object tem;
-
- tem = internal_condition_case_2 (Fdelete_file, filename, Qnil,
- Qt, internal_delete_file_1);
- return NILP (tem);
+ internal_condition_case_2 (Fdelete_file, filename, Qnil,
+ Qt, internal_delete_file_1);
}
\f
DEFUN ("rename-file", Frename_file, Srename_file, 2, 3,
return file_name_absolute_p (SSDATA (filename)) ? Qt : Qnil;
}
\f
-/* Return nonzero if file FILENAME exists and can be executed. */
+/* Return true if file FILENAME exists and can be executed. */
-static int
+static bool
check_executable (char *filename)
{
#ifdef DOS_NT
#endif /* not DOS_NT */
}
-/* Return nonzero if file FILENAME exists and can be written. */
+/* Return true if file FILENAME exists and can be written. */
-static int
+static bool
check_writable (const char *filename)
{
#ifdef MSDOS
return (st.st_mode & S_IWRITE || S_ISDIR (st.st_mode));
#else /* not MSDOS */
#ifdef HAVE_EUIDACCESS
- int res = (euidaccess (filename, 2) >= 0);
+ bool res = (euidaccess (filename, 2) >= 0);
#ifdef CYGWIN
/* euidaccess may have returned failure because Cygwin couldn't
determine the file's UID or GID; if so, we return success. */
(Lisp_Object filename)
{
Lisp_Object handler;
- int tem;
+ bool tem;
struct gcpro gcpro1;
/* If the file name has special constructs in it,
\f
DEFUN ("file-selinux-context", Ffile_selinux_context,
Sfile_selinux_context, 1, 1, 0,
- doc: /* Return SELinux context of file named FILENAME,
-as a list ("user", "role", "type", "range"). Return (nil, nil, nil, nil)
-if file does not exist, is not accessible, or SELinux is disabled */)
+ doc: /* Return SELinux context of file named FILENAME.
+The return value is a list (USER ROLE TYPE RANGE), where the list
+elements are strings naming the user, role, type, and range of the
+file's SELinux security context.
+
+Return (nil nil nil nil) if the file is nonexistent or inaccessible,
+or if SELinux is disabled, or if Emacs lacks SELinux support. */)
(Lisp_Object filename)
{
Lisp_Object absname;
if (context_range_get (context))
values[3] = build_string (context_range_get (context));
context_free (context);
+ freecon (con);
}
- if (con)
- freecon (con);
}
#endif
\f
DEFUN ("set-file-selinux-context", Fset_file_selinux_context,
Sset_file_selinux_context, 2, 2, 0,
- doc: /* Set SELinux context of file named FILENAME to CONTEXT
-as a list ("user", "role", "type", "range"). Has no effect if SELinux
-is disabled. */)
+ doc: /* Set SELinux context of file named FILENAME to CONTEXT.
+CONTEXT should be a list (USER ROLE TYPE RANGE), where the list
+elements are strings naming the components of a SELinux context.
+
+This function does nothing if SELinux is disabled, or if Emacs was not
+compiled with SELinux support. */)
(Lisp_Object filename, Lisp_Object context)
{
Lisp_Object absname;
Lisp_Object type = CAR_SAFE (CDR_SAFE (CDR_SAFE (context)));
Lisp_Object range = CAR_SAFE (CDR_SAFE (CDR_SAFE (CDR_SAFE (context))));
security_context_t con;
- int fail, conlength;
+ bool fail;
+ int conlength;
context_t parsed_con;
#endif
error ("Doing context_range_set");
}
- /* Set the modified context back to the file. */
- fail = lsetfilecon (SSDATA (encoded_absname),
- context_str (parsed_con));
- if (fail)
+ /* Set the modified context back to the file. */
+ fail = (lsetfilecon (SSDATA (encoded_absname),
+ context_str (parsed_con))
+ != 0);
+ /* See http://debbugs.gnu.org/11245 for ENOTSUP. */
+ if (fail && errno != ENOTSUP)
report_file_error ("Doing lsetfilecon", Fcons (absname, Qnil));
context_free (parsed_con);
+ freecon (con);
}
else
report_file_error ("Doing lgetfilecon", Fcons (absname, Qnil));
-
- if (con)
- freecon (con);
}
#endif
The value is an integer. */)
(void)
{
- int realmask;
+ mode_t realmask;
Lisp_Object value;
+ BLOCK_INPUT;
realmask = umask (0);
umask (realmask);
+ UNBLOCK_INPUT;
XSETINT (value, (~ realmask) & 0777);
return value;
{
Lisp_Object absname, encoded_absname;
Lisp_Object handler;
- time_t sec;
- int usec;
-
- if (! lisp_time_argument (timestamp, &sec, &usec))
- error ("Invalid time specification");
+ EMACS_TIME t = lisp_time_argument (timestamp);
absname = Fexpand_file_name (filename, BVAR (current_buffer, directory));
encoded_absname = ENCODE_FILE (absname);
{
- EMACS_TIME t;
-
- EMACS_SET_SECS (t, sec);
- EMACS_SET_USECS (t, usec);
-
- if (set_file_times (SSDATA (encoded_absname), t, t))
+ if (set_file_times (-1, SSDATA (encoded_absname), t, t))
{
#ifdef DOS_NT
struct stat st;
(Lisp_Object file1, Lisp_Object file2)
{
Lisp_Object absname1, absname2;
- struct stat st;
- int mtime1;
+ struct stat st1, st2;
Lisp_Object handler;
struct gcpro gcpro1, gcpro2;
absname2 = ENCODE_FILE (absname2);
UNGCPRO;
- if (stat (SSDATA (absname1), &st) < 0)
+ if (stat (SSDATA (absname1), &st1) < 0)
return Qnil;
- mtime1 = st.st_mtime;
-
- if (stat (SSDATA (absname2), &st) < 0)
+ if (stat (SSDATA (absname2), &st2) < 0)
return Qt;
- return (mtime1 > st.st_mtime) ? Qt : Qnil;
+ return (EMACS_TIME_GT (get_stat_mtime (&st1), get_stat_mtime (&st2))
+ ? Qt : Qnil);
}
\f
#ifndef READ_BUF_SIZE
undo_list = XCAR (unwind_data);
buffer = XCDR (unwind_data);
- if (current_buffer != XBUFFER (buffer))
- set_buffer_internal (XBUFFER (buffer));
+ set_buffer_internal (XBUFFER (buffer));
adjust_markers_for_delete (BEG, BEG_BYTE, Z, Z_BYTE);
adjust_overlays_for_delete (BEG, Z - BEG);
- BUF_INTERVALS (current_buffer) = 0;
+ set_buffer_intervals (current_buffer, NULL);
TEMP_SET_PT_BOTH (BEG, BEG_BYTE);
/* Now we are safe to change the buffer's multibyteness directly. */
- BVAR (current_buffer, enable_multibyte_characters) = multibyte;
- BVAR (current_buffer, undo_list) = undo_list;
+ bset_enable_multibyte_characters (current_buffer, multibyte);
+ bset_undo_list (current_buffer, undo_list);
return Qnil;
}
return lseek (fd, offset, whence);
}
+/* Return a special time value indicating the error number ERRNUM. */
+static EMACS_TIME
+time_error_value (int errnum)
+{
+ int ns = (errnum == ENOENT || errnum == EACCES || errnum == ENOTDIR
+ ? NONEXISTENT_MODTIME_NSECS
+ : UNKNOWN_MODTIME_NSECS);
+ return make_emacs_time (0, ns);
+}
DEFUN ("insert-file-contents", Finsert_file_contents, Sinsert_file_contents,
1, 5, 0,
(Lisp_Object filename, Lisp_Object visit, Lisp_Object beg, Lisp_Object end, Lisp_Object replace)
{
struct stat st;
- register int fd;
+ int file_status;
+ EMACS_TIME mtime;
+ int fd;
ptrdiff_t inserted = 0;
- int nochange = 0;
- register ptrdiff_t how_much;
+ bool nochange = 0;
+ ptrdiff_t how_much;
off_t beg_offset, end_offset;
- register int unprocessed;
+ int unprocessed;
ptrdiff_t count = SPECPDL_INDEX ();
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
Lisp_Object handler, val, insval, orig_filename, old_undo;
Lisp_Object p;
ptrdiff_t total = 0;
- int not_regular = 0;
+ bool not_regular = 0;
int save_errno = 0;
char read_buf[READ_BUF_SIZE];
struct coding_system coding;
char buffer[1 << 14];
- int replace_handled = 0;
- int set_coding_system = 0;
+ bool replace_handled = 0;
+ bool set_coding_system = 0;
Lisp_Object coding_system;
- int read_quit = 0;
+ bool read_quit = 0;
Lisp_Object old_Vdeactivate_mark = Vdeactivate_mark;
- int we_locked_file = 0;
- int deferred_remove_unwind_protect = 0;
+ bool we_locked_file = 0;
+ bool deferred_remove_unwind_protect = 0;
if (current_buffer->base_buffer && ! NILP (visit))
error ("Cannot do file visiting in an indirect buffer");
/* Tell stat to use expensive method to get accurate info. */
Vw32_get_true_file_attributes = Qt;
- total = stat (SSDATA (filename), &st);
+ file_status = stat (SSDATA (filename), &st);
Vw32_get_true_file_attributes = tem;
}
- if (total < 0)
#else
- if (stat (SSDATA (filename), &st) < 0)
+ file_status = stat (SSDATA (filename), &st);
#endif /* WINDOWSNT */
+
+ if (file_status == 0)
+ mtime = get_stat_mtime (&st);
+ else
{
badopen:
save_errno = errno;
if (NILP (visit))
report_file_error ("Opening input file", Fcons (orig_filename, Qnil));
- st.st_mtime = -1;
+ mtime = time_error_value (save_errno);
st.st_size = -1;
how_much = 0;
if (!NILP (Vcoding_system_for_read))
Lisp_Object workbuf;
struct buffer *buf;
- record_unwind_protect (Fset_buffer, Fcurrent_buffer ());
+ record_unwind_current_buffer ();
workbuf = Fget_buffer_create (build_string (" *code-converting-work*"));
buf = XBUFFER (workbuf);
delete_all_overlays (buf);
- BVAR (buf, directory) = BVAR (current_buffer, directory);
- BVAR (buf, read_only) = Qnil;
- BVAR (buf, filename) = Qnil;
- BVAR (buf, undo_list) = Qt;
+ bset_directory (buf, BVAR (current_buffer, directory));
+ bset_read_only (buf, Qnil);
+ bset_filename (buf, Qnil);
+ bset_undo_list (buf, Qt);
eassert (buf->overlays_before == NULL);
eassert (buf->overlays_after == NULL);
set_buffer_internal (buf);
Ferase_buffer ();
- BVAR (buf, enable_multibyte_characters) = Qnil;
+ bset_enable_multibyte_characters (buf, Qnil);
insert_1_both ((char *) read_buf, nread, nread, 0, 0, 0);
TEMP_SET_PT_BOTH (BEG, BEG_BYTE);
ptrdiff_t same_at_end = ZV_BYTE;
ptrdiff_t overlap;
/* There is still a possibility we will find the need to do code
- conversion. If that happens, we set this variable to 1 to
+ conversion. If that happens, set this variable to
give up on handling REPLACE in the optimized way. */
- int giveup_match_end = 0;
+ bool giveup_match_end = 0;
if (beg_offset != 0)
{
/* If display currently starts at beginning of line,
keep it that way. */
if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer)
- XWINDOW (selected_window)->start_at_line_beg = Fbolp ();
+ XWINDOW (selected_window)->start_at_line_beg = !NILP (Fbolp ());
replace_handled = 1;
}
ptrdiff_t temp;
ptrdiff_t this = 0;
ptrdiff_t this_count = SPECPDL_INDEX ();
- int multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters));
+ bool multibyte
+ = ! NILP (BVAR (current_buffer, enable_multibyte_characters));
Lisp_Object conversion_buffer;
struct gcpro gcpro1;
/* If display currently starts at beginning of line,
keep it that way. */
if (XBUFFER (XWINDOW (selected_window)->buffer) == current_buffer)
- XWINDOW (selected_window)->start_at_line_beg = Fbolp ();
+ XWINDOW (selected_window)->start_at_line_beg = !NILP (Fbolp ());
/* Replace the chars that we need to replace,
and update INSERTED to equal the number of bytes
unwind_data = Fcons (BVAR (current_buffer, enable_multibyte_characters),
Fcons (BVAR (current_buffer, undo_list),
Fcurrent_buffer ()));
- BVAR (current_buffer, enable_multibyte_characters) = Qnil;
- BVAR (current_buffer, undo_list) = Qt;
+ bset_enable_multibyte_characters (current_buffer, Qnil);
+ bset_undo_list (current_buffer, Qt);
record_unwind_protect (decide_coding_unwind, unwind_data);
if (inserted > 0 && ! NILP (Vset_auto_coding_function))
&& NILP (replace))
/* Visiting a file with these coding system makes the buffer
unibyte. */
- BVAR (current_buffer, enable_multibyte_characters) = Qnil;
+ bset_enable_multibyte_characters (current_buffer, Qnil);
}
coding.dst_multibyte = ! NILP (BVAR (current_buffer, enable_multibyte_characters));
if (!NILP (visit))
{
if (!EQ (BVAR (current_buffer, undo_list), Qt) && !nochange)
- BVAR (current_buffer, undo_list) = Qnil;
+ bset_undo_list (current_buffer, Qnil);
if (NILP (handler))
{
- current_buffer->modtime = st.st_mtime;
+ current_buffer->modtime = mtime;
current_buffer->modtime_size = st.st_size;
- BVAR (current_buffer, filename) = orig_filename;
+ bset_filename (current_buffer, orig_filename);
}
SAVE_MODIFF = MODIFF;
/* Save old undo list and don't record undo for decoding. */
old_undo = BVAR (current_buffer, undo_list);
- BVAR (current_buffer, undo_list) = Qt;
+ bset_undo_list (current_buffer, Qt);
if (NILP (replace))
{
if (NILP (visit))
{
- BVAR (current_buffer, undo_list) = old_undo;
+ bset_undo_list (current_buffer, old_undo);
if (CONSP (old_undo) && inserted != old_inserted)
{
/* Adjust the last undo record for the size change during
else
/* If undo_list was Qt before, keep it that way.
Otherwise start with an empty undo_list. */
- BVAR (current_buffer, undo_list) = EQ (old_undo, Qt) ? Qt : Qnil;
+ bset_undo_list (current_buffer, EQ (old_undo, Qt) ? Qt : Qnil);
unbind_to (count1, Qnil);
}
if (!NILP (visit)
- && current_buffer->modtime == -1)
+ && EMACS_NSECS (current_buffer->modtime) == NONEXISTENT_MODTIME_NSECS)
{
/* If visiting nonexistent file, return nil. */
errno = save_errno;
If it is not set locally, we anyway have to convert EOL
format if the default value of `buffer-file-coding-system'
tells that it is not Unix-like (LF only) format. */
- int using_default_coding = 0;
- int force_raw_text = 0;
+ bool using_default_coding = 0;
+ bool force_raw_text = 0;
val = BVAR (current_buffer, buffer_file_coding_system);
if (NILP (val)
`write-region-post-annotation-function' at the end. */)
(Lisp_Object start, Lisp_Object end, Lisp_Object filename, Lisp_Object append, Lisp_Object visit, Lisp_Object lockname, Lisp_Object mustbenew)
{
- register int desc;
- int failure;
+ int desc;
+ bool ok;
int save_errno = 0;
const char *fn;
struct stat st;
Lisp_Object visit_file;
Lisp_Object annotations;
Lisp_Object encoded_filename;
- int visiting = (EQ (visit, Qt) || STRINGP (visit));
- int quietly = !NILP (visit);
+ bool visiting = (EQ (visit, Qt) || STRINGP (visit));
+ bool quietly = !NILP (visit);
struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
struct buffer *given_buffer;
struct coding_system coding;
{
SAVE_MODIFF = MODIFF;
XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG);
- BVAR (current_buffer, filename) = visit_file;
+ bset_filename (current_buffer, visit_file);
}
UNGCPRO;
return val;
UNGCPRO;
- failure = 0;
immediate_quit = 1;
if (STRINGP (start))
- {
- failure = 0 > a_write (desc, start, 0, SCHARS (start),
- &annotations, &coding);
- save_errno = errno;
- }
+ ok = a_write (desc, start, 0, SCHARS (start), &annotations, &coding);
else if (XINT (start) != XINT (end))
- {
- failure = 0 > a_write (desc, Qnil,
- XINT (start), XINT (end) - XINT (start),
- &annotations, &coding);
- save_errno = errno;
- }
+ ok = a_write (desc, Qnil, XINT (start), XINT (end) - XINT (start),
+ &annotations, &coding);
else
{
- /* If file was empty, still need to write the annotations */
+ /* If file was empty, still need to write the annotations. */
coding.mode |= CODING_MODE_LAST_BLOCK;
- failure = 0 > a_write (desc, Qnil, XINT (end), 0, &annotations, &coding);
- save_errno = errno;
+ ok = a_write (desc, Qnil, XINT (end), 0, &annotations, &coding);
}
+ save_errno = errno;
- if (CODING_REQUIRE_FLUSHING (&coding)
- && !(coding.mode & CODING_MODE_LAST_BLOCK)
- && ! failure)
+ if (ok && CODING_REQUIRE_FLUSHING (&coding)
+ && !(coding.mode & CODING_MODE_LAST_BLOCK))
{
/* We have to flush out a data. */
coding.mode |= CODING_MODE_LAST_BLOCK;
- failure = 0 > e_write (desc, Qnil, 1, 1, &coding);
+ ok = e_write (desc, Qnil, 1, 1, &coding);
save_errno = errno;
}
ignore EINVAL which happens when fsync is not supported on this
file. */
if (errno != EINTR && errno != EINVAL)
- failure = 1, save_errno = errno;
+ ok = 0, save_errno = errno;
}
#endif
/* NFS can report a write failure now. */
if (emacs_close (desc) < 0)
- failure = 1, save_errno = errno;
+ ok = 0, save_errno = errno;
stat (fn, &st);
next attempt to save. */
if (visiting)
{
- current_buffer->modtime = st.st_mtime;
+ current_buffer->modtime = get_stat_mtime (&st);
current_buffer->modtime_size = st.st_size;
}
- if (failure)
+ if (! ok)
error ("IO error writing %s: %s", SDATA (filename),
emacs_strerror (save_errno));
{
SAVE_MODIFF = MODIFF;
XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG);
- BVAR (current_buffer, filename) = visit_file;
+ bset_filename (current_buffer, visit_file);
update_mode_lines++;
}
else if (quietly)
Lisp_Object p, res;
struct gcpro gcpro1, gcpro2;
Lisp_Object original_buffer;
- int i, used_global = 0;
+ int i;
+ bool used_global = 0;
XSETBUFFER (original_buffer, current_buffer);
We modify *ANNOT by discarding elements as we use them up.
- The return value is negative in case of system call failure. */
+ Return true if successful. */
-static int
+static bool
a_write (int desc, Lisp_Object string, ptrdiff_t pos,
- register ptrdiff_t nchars, Lisp_Object *annot,
+ ptrdiff_t nchars, Lisp_Object *annot,
struct coding_system *coding)
{
Lisp_Object tem;
/* Output buffer text up to the next annotation's position. */
if (nextpos > pos)
{
- if (0 > e_write (desc, string, pos, nextpos, coding))
- return -1;
+ if (!e_write (desc, string, pos, nextpos, coding))
+ return 0;
pos = nextpos;
}
/* Output the annotation. */
tem = Fcdr (Fcar (*annot));
if (STRINGP (tem))
{
- if (0 > e_write (desc, tem, 0, SCHARS (tem), coding))
- return -1;
+ if (!e_write (desc, tem, 0, SCHARS (tem), coding))
+ return 0;
}
*annot = Fcdr (*annot);
}
- return 0;
+ return 1;
}
/* Write text in the range START and END into descriptor DESC,
encoding them with coding system CODING. If STRING is nil, START
and END are character positions of the current buffer, else they
- are indexes to the string STRING. */
+ are indexes to the string STRING. Return true if successful. */
-static int
+static bool
e_write (int desc, Lisp_Object string, ptrdiff_t start, ptrdiff_t end,
struct coding_system *coding)
{
coding->produced);
if (coding->produced)
- return -1;
+ return 0;
}
start += coding->consumed_char;
}
- return 0;
+ return 1;
}
\f
DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime,
struct stat st;
Lisp_Object handler;
Lisp_Object filename;
+ EMACS_TIME mtime, diff;
if (NILP (buf))
b = current_buffer;
}
if (!STRINGP (BVAR (b, filename))) return Qt;
- if (b->modtime == 0) return Qt;
+ if (EMACS_NSECS (b->modtime) == UNKNOWN_MODTIME_NSECS) return Qt;
/* If the file name has special constructs in it,
call the corresponding file handler. */
filename = ENCODE_FILE (BVAR (b, filename));
- if (stat (SSDATA (filename), &st) < 0)
- {
- /* If the file doesn't exist now and didn't exist before,
- we say that it isn't modified, provided the error is a tame one. */
- if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
- st.st_mtime = -1;
- else
- st.st_mtime = 0;
- }
- if ((st.st_mtime == b->modtime
- /* If both are positive, accept them if they are off by one second. */
- || (st.st_mtime > 0 && b->modtime > 0
- && (st.st_mtime - 1 == b->modtime
- || st.st_mtime == b->modtime - 1)))
+ mtime = (stat (SSDATA (filename), &st) == 0
+ ? get_stat_mtime (&st)
+ : time_error_value (errno));
+ if ((EMACS_TIME_EQ (mtime, b->modtime)
+ /* If both exist, accept them if they are off by one second. */
+ || (EMACS_TIME_VALID_P (mtime) && EMACS_TIME_VALID_P (b->modtime)
+ && ((diff = (EMACS_TIME_LT (mtime, b->modtime)
+ ? sub_emacs_time (b->modtime, mtime)
+ : sub_emacs_time (mtime, b->modtime))),
+ EMACS_TIME_LE (diff, make_emacs_time (1, 0)))))
&& (st.st_size == b->modtime_size
|| b->modtime_size < 0))
return Qt;
Next attempt to save will certainly not complain of a discrepancy. */)
(void)
{
- current_buffer->modtime = 0;
+ current_buffer->modtime = make_emacs_time (0, UNKNOWN_MODTIME_NSECS);
current_buffer->modtime_size = -1;
return Qnil;
}
DEFUN ("visited-file-modtime", Fvisited_file_modtime,
Svisited_file_modtime, 0, 0, 0,
doc: /* Return the current buffer's recorded visited file modification time.
-The value is a list of the form (HIGH LOW), like the time values that
+The value is a list of the form (HIGH LOW USEC PSEC), like the time values that
`file-attributes' returns. If the current buffer has no recorded file
modification time, this function returns 0. If the visited file
doesn't exist, HIGH will be -1.
See Info node `(elisp)Modification Time' for more details. */)
(void)
{
- if (! current_buffer->modtime)
+ if (EMACS_NSECS (current_buffer->modtime) < 0)
return make_number (0);
- return make_time (current_buffer->modtime);
+ return make_lisp_time (current_buffer->modtime);
}
DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime,
or if the file itself has been changed for some known benign reason.
An argument specifies the modification time value to use
\(instead of that of the visited file), in the form of a list
-\(HIGH . LOW) or (HIGH LOW). */)
+\(HIGH LOW USEC PSEC) as returned by `current-time'. */)
(Lisp_Object time_list)
{
if (!NILP (time_list))
{
- CONS_TO_INTEGER (time_list, time_t, current_buffer->modtime);
+ current_buffer->modtime = lisp_time_argument (time_list);
current_buffer->modtime_size = -1;
}
else
if (stat (SSDATA (filename), &st) >= 0)
{
- current_buffer->modtime = st.st_mtime;
+ current_buffer->modtime = get_stat_mtime (&st);
current_buffer->modtime_size = st.st_size;
}
}
msg = Fformat (3, args);
GCPRO1 (msg);
nbytes = SBYTES (msg);
- SAFE_ALLOCA (msgbuf, char *, nbytes);
+ msgbuf = SAFE_ALLOCA (nbytes);
memcpy (msgbuf, SDATA (msg), nbytes);
for (i = 0; i < 3; ++i)
{
struct buffer *old = current_buffer, *b;
Lisp_Object tail, buf, hook;
- int auto_saved = 0;
+ bool auto_saved = 0;
int do_handled_files;
Lisp_Object oquit;
FILE *stream = NULL;
ptrdiff_t count = SPECPDL_INDEX ();
- int orig_minibuffer_auto_raise = minibuffer_auto_raise;
- int old_message_p = 0;
+ bool orig_minibuffer_auto_raise = minibuffer_auto_raise;
+ bool old_message_p = 0;
struct gcpro gcpro1, gcpro2;
if (max_specpdl_size < specpdl_size + 40)
|| NILP (Ffind_file_name_handler (BVAR (b, auto_save_file_name),
Qwrite_region))))
{
- EMACS_TIME before_time, after_time;
-
- EMACS_GET_TIME (before_time);
+ EMACS_TIME before_time = current_emacs_time ();
+ EMACS_TIME after_time;
/* If we had a failure, don't try again for 20 minutes. */
if (b->auto_save_failure_time > 0
if (!auto_saved && NILP (no_message))
message1 ("Auto-saving...");
internal_condition_case (auto_save_1, Qt, auto_save_error);
- auto_saved++;
+ auto_saved = 1;
BUF_AUTOSAVE_MODIFF (b) = BUF_MODIFF (b);
XSETFASTINT (BVAR (current_buffer, save_length), Z - BEG);
set_buffer_internal (old);
- EMACS_GET_TIME (after_time);
+ after_time = current_emacs_time ();
/* If auto-save took more than 60 seconds,
assume it was an NFS failure that got a timeout. */
DEFSYM (Qexcl, "excl");
DEFVAR_LISP ("file-name-coding-system", Vfile_name_coding_system,
- doc: /* *Coding system for encoding file names.
+ doc: /* Coding system for encoding file names.
If it is nil, `default-file-name-coding-system' (which see) is used. */);
Vfile_name_coding_system = Qnil;
Fput (Qfile_error, Qerror_conditions,
Fpurecopy (list2 (Qfile_error, Qerror)));
Fput (Qfile_error, Qerror_message,
- make_pure_c_string ("File error"));
+ build_pure_c_string ("File error"));
Fput (Qfile_already_exists, Qerror_conditions,
Fpurecopy (list3 (Qfile_already_exists, Qfile_error, Qerror)));
Fput (Qfile_already_exists, Qerror_message,
- make_pure_c_string ("File already exists"));
+ build_pure_c_string ("File already exists"));
Fput (Qfile_date_error, Qerror_conditions,
Fpurecopy (list3 (Qfile_date_error, Qfile_error, Qerror)));
Fput (Qfile_date_error, Qerror_message,
- make_pure_c_string ("Cannot set file date"));
+ build_pure_c_string ("Cannot set file date"));
DEFVAR_LISP ("file-name-handler-alist", Vfile_name_handler_alist,
- doc: /* *Alist of elements (REGEXP . HANDLER) for file names handled specially.
-If a file name matches REGEXP, then all I/O on that file is done by calling
-HANDLER.
-
-The first argument given to HANDLER is the name of the I/O primitive
-to be handled; the remaining arguments are the arguments that were
-passed to that primitive. For example, if you do
- (file-exists-p FILENAME)
-and FILENAME is handled by HANDLER, then HANDLER is called like this:
- (funcall HANDLER 'file-exists-p FILENAME)
-The function `find-file-name-handler' checks this list for a handler
-for its argument. */);
+ doc: /* Alist of elements (REGEXP . HANDLER) for file names handled specially.
+If a file name matches REGEXP, all I/O on that file is done by calling
+HANDLER. If a file name matches more than one handler, the handler
+whose match starts last in the file name gets precedence. The
+function `find-file-name-handler' checks this list for a handler for
+its argument.
+
+HANDLER should be a function. The first argument given to it is the
+name of the I/O primitive to be handled; the remaining arguments are
+the arguments that were passed to that primitive. For example, if you
+do (file-exists-p FILENAME) and FILENAME is handled by HANDLER, then
+HANDLER is called like this:
+
+ (funcall HANDLER 'file-exists-p FILENAME)
+
+Note that HANDLER must be able to handle all I/O primitives; if it has
+nothing special to do for a primitive, it should reinvoke the
+primitive to handle the operation \"the usual way\".
+See Info node `(elisp)Magic File Names' for more details. */);
Vfile_name_handler_alist = Qnil;
DEFVAR_LISP ("set-auto-coding-function",
#ifdef HAVE_FSYNC
DEFVAR_BOOL ("write-region-inhibit-fsync", write_region_inhibit_fsync,
- doc: /* *Non-nil means don't call fsync in `write-region'.
+ 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;