#include <sys/types.h>
#include <config.h>
#ifdef VMS
#include "vms-pwd.h"
#else
#include <pwd.h>
#endif
#ifdef STDC_HEADERS
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "lisp.h"
#include "intervals.h"
#include "buffer.h"
#include "charset.h"
#include "window.h"
#include "systime.h"
#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))
#ifndef NULL
#define NULL 0
#endif
extern char **environ;
extern Lisp_Object make_time ();
extern void insert_from_buffer ();
static int tm_diff ();
static void update_buffer_properties ();
size_t emacs_strftime ();
void set_time_zone_rule ();
Lisp_Object Vbuffer_access_fontify_functions;
Lisp_Object Qbuffer_access_fontify_functions;
Lisp_Object Vbuffer_access_fontified_property;
Lisp_Object Fuser_full_name ();
Lisp_Object Vsystem_name;
Lisp_Object Vuser_real_login_name;
Lisp_Object Vuser_full_name;
Lisp_Object Vuser_login_name;
void
init_editfns ()
{
char *user_name;
register unsigned char *p, *q, *r;
struct passwd *pw;
Lisp_Object tem;
init_system_name ();
#ifndef CANNOT_DUMP
if (!initialized)
return;
#endif
pw = (struct passwd *) getpwuid (getuid ());
#ifdef MSDOS
Vuser_real_login_name = build_string (pw ? pw->pw_name : "root");
#else
Vuser_real_login_name = build_string (pw ? pw->pw_name : "unknown");
#endif
user_name = (char *) getenv ("LOGNAME");
if (!user_name)
#ifdef WINDOWSNT
user_name = (char *) getenv ("USERNAME");
#else
user_name = (char *) getenv ("USER");
#endif
if (!user_name)
{
pw = (struct passwd *) getpwuid (geteuid ());
user_name = (char *) (pw ? pw->pw_name : "unknown");
}
Vuser_login_name = build_string (user_name);
tem = Fstring_equal (Vuser_login_name, Vuser_real_login_name);
Vuser_full_name = Fuser_full_name (NILP (tem)? make_number (geteuid())
: Vuser_login_name);
p = (unsigned char *) getenv ("NAME");
if (p)
Vuser_full_name = build_string (p);
else if (NILP (Vuser_full_name))
Vuser_full_name = build_string ("unknown");
}
DEFUN ("char-to-string", Fchar_to_string, Schar_to_string, 1, 1, 0,
"Convert arg CHAR to a string containing that character.")
(character)
Lisp_Object character;
{
int len;
unsigned char workbuf[4], *str;
CHECK_NUMBER (character, 0);
len = CHAR_STRING (XFASTINT (character), workbuf, str);
return make_string_from_bytes (str, 1, len);
}
DEFUN ("string-to-char", Fstring_to_char, Sstring_to_char, 1, 1, 0,
"Convert arg STRING to a character, the first character of that string.\n\
A multibyte character is handled correctly.")
(string)
register Lisp_Object string;
{
register Lisp_Object val;
register struct Lisp_String *p;
CHECK_STRING (string, 0);
p = XSTRING (string);
if (p->size)
{
if (STRING_MULTIBYTE (string))
XSETFASTINT (val, STRING_CHAR (p->data, STRING_BYTES (p)));
else
XSETFASTINT (val, p->data[0]);
}
else
XSETFASTINT (val, 0);
return val;
}
static Lisp_Object
buildmark (charpos, bytepos)
int charpos, bytepos;
{
register Lisp_Object mark;
mark = Fmake_marker ();
set_marker_both (mark, Qnil, charpos, bytepos);
return mark;
}
DEFUN ("point", Fpoint, Spoint, 0, 0, 0,
"Return value of point, as an integer.\n\
Beginning of buffer is position (point-min)")
()
{
Lisp_Object temp;
XSETFASTINT (temp, PT);
return temp;
}
DEFUN ("point-marker", Fpoint_marker, Spoint_marker, 0, 0, 0,
"Return value of point, as a marker object.")
()
{
return buildmark (PT, PT_BYTE);
}
int
clip_to_bounds (lower, num, upper)
int lower, num, upper;
{
if (num < lower)
return lower;
else if (num > upper)
return upper;
else
return num;
}
DEFUN ("goto-char", Fgoto_char, Sgoto_char, 1, 1, "NGoto char: ",
"Set point to POSITION, a number or marker.\n\
Beginning of buffer is position (point-min), end is (point-max).\n\
If the position is in the middle of a multibyte form,\n\
the actual point is set at the head of the multibyte form\n\
except in the case that `enable-multibyte-characters' is nil.")
(position)
register Lisp_Object position;
{
int pos;
unsigned char *p;
if (MARKERP (position)
&& current_buffer == XMARKER (position)->buffer)
{
pos = marker_position (position);
if (pos < BEGV)
SET_PT_BOTH (BEGV, BEGV_BYTE);
else if (pos > ZV)
SET_PT_BOTH (ZV, ZV_BYTE);
else
SET_PT_BOTH (pos, marker_byte_position (position));
return position;
}
CHECK_NUMBER_COERCE_MARKER (position, 0);
pos = clip_to_bounds (BEGV, XINT (position), ZV);
SET_PT (pos);
return position;
}
static Lisp_Object
region_limit (beginningp)
int beginningp;
{
extern Lisp_Object Vmark_even_if_inactive;
register Lisp_Object m;
if (!NILP (Vtransient_mark_mode) && NILP (Vmark_even_if_inactive)
&& NILP (current_buffer->mark_active))
Fsignal (Qmark_inactive, Qnil);
m = Fmarker_position (current_buffer->mark);
if (NILP (m)) error ("There is no region now");
if ((PT < XFASTINT (m)) == beginningp)
return (make_number (PT));
else
return (m);
}
DEFUN ("region-beginning", Fregion_beginning, Sregion_beginning, 0, 0, 0,
"Return position of beginning of region, as an integer.")
()
{
return (region_limit (1));
}
DEFUN ("region-end", Fregion_end, Sregion_end, 0, 0, 0,
"Return position of end of region, as an integer.")
()
{
return (region_limit (0));
}
DEFUN ("mark-marker", Fmark_marker, Smark_marker, 0, 0, 0,
"Return this buffer's mark, as a marker object.\n\
Watch out! Moving this marker changes the mark position.\n\
If you set the marker not to point anywhere, the buffer will have no mark.")
()
{
return current_buffer->mark;
}
DEFUN ("line-beginning-position", Fline_beginning_position, Sline_beginning_position,
0, 1, 0,
"Return the character position of the first character on the current line.\n\
With argument N not nil or 1, move forward N - 1 lines first.\n\
If scan reaches end of buffer, return that position.\n\
This function does not move point.")
(n)
Lisp_Object n;
{
register int orig, orig_byte, end;
if (NILP (n))
XSETFASTINT (n, 1);
else
CHECK_NUMBER (n, 0);
orig = PT;
orig_byte = PT_BYTE;
Fforward_line (make_number (XINT (n) - 1));
end = PT;
SET_PT_BOTH (orig, orig_byte);
return make_number (end);
}
DEFUN ("line-end-position", Fline_end_position, Sline_end_position,
0, 1, 0,
"Return the character position of the last character on the current line.\n\
With argument N not nil or 1, move forward N - 1 lines first.\n\
If scan reaches end of buffer, return that position.\n\
This function does not move point.")
(n)
Lisp_Object n;
{
if (NILP (n))
XSETFASTINT (n, 1);
else
CHECK_NUMBER (n, 0);
return make_number (find_before_next_newline
(PT, 0, XINT (n) - (XINT (n) <= 0)));
}
Lisp_Object
save_excursion_save ()
{
register int visible = (XBUFFER (XWINDOW (selected_window)->buffer)
== current_buffer);
return Fcons (Fpoint_marker (),
Fcons (Fcopy_marker (current_buffer->mark, Qnil),
Fcons (visible ? Qt : Qnil,
current_buffer->mark_active)));
}
Lisp_Object
save_excursion_restore (info)
Lisp_Object info;
{
Lisp_Object tem, tem1, omark, nmark;
struct gcpro gcpro1, gcpro2, gcpro3;
tem = Fmarker_buffer (Fcar (info));
if (NILP (tem))
return Qnil;
omark = nmark = Qnil;
GCPRO3 (info, omark, nmark);
Fset_buffer (tem);
tem = Fcar (info);
Fgoto_char (tem);
unchain_marker (tem);
tem = Fcar (Fcdr (info));
omark = Fmarker_position (current_buffer->mark);
Fset_marker (current_buffer->mark, tem, Fcurrent_buffer ());
nmark = Fmarker_position (tem);
unchain_marker (tem);
tem = Fcdr (Fcdr (info));
#if 0
tem1 = Fcar (tem);
if (!NILP (tem1)
&& current_buffer != XBUFFER (XWINDOW (selected_window)->buffer))
Fswitch_to_buffer (Fcurrent_buffer (), Qnil);
#endif
tem1 = current_buffer->mark_active;
current_buffer->mark_active = Fcdr (tem);
if (!NILP (Vrun_hooks))
{
if (! NILP (current_buffer->mark_active))
{
if (! EQ (omark, nmark))
call1 (Vrun_hooks, intern ("activate-mark-hook"));
}
else if (! NILP (tem1))
call1 (Vrun_hooks, intern ("deactivate-mark-hook"));
}
UNGCPRO;
return Qnil;
}
DEFUN ("save-excursion", Fsave_excursion, Ssave_excursion, 0, UNEVALLED, 0,
"Save point, mark, and current buffer; execute BODY; restore those things.\n\
Executes BODY just like `progn'.\n\
The values of point, mark and the current buffer are restored\n\
even in case of abnormal exit (throw or error).\n\
The state of activation of the mark is also restored.\n\
\n\
This construct does not save `deactivate-mark', and therefore\n\
functions that change the buffer will still cause deactivation\n\
of the mark at the end of the command. To prevent that, bind\n\
`deactivate-mark' with `let'.")
(args)
Lisp_Object args;
{
register Lisp_Object val;
int count = specpdl_ptr - specpdl;
record_unwind_protect (save_excursion_restore, save_excursion_save ());
val = Fprogn (args);
return unbind_to (count, val);
}
DEFUN ("save-current-buffer", Fsave_current_buffer, Ssave_current_buffer, 0, UNEVALLED, 0,
"Save the current buffer; execute BODY; restore the current buffer.\n\
Executes BODY just like `progn'.")
(args)
Lisp_Object args;
{
register Lisp_Object val;
int count = specpdl_ptr - specpdl;
record_unwind_protect (set_buffer_if_live, Fcurrent_buffer ());
val = Fprogn (args);
return unbind_to (count, val);
}
DEFUN ("buffer-size", Fbufsize, Sbufsize, 0, 0, 0,
"Return the number of characters in the current buffer.")
()
{
Lisp_Object temp;
XSETFASTINT (temp, Z - BEG);
return temp;
}
DEFUN ("point-min", Fpoint_min, Spoint_min, 0, 0, 0,
"Return the minimum permissible value of point in the current buffer.\n\
This is 1, unless narrowing (a buffer restriction) is in effect.")
()
{
Lisp_Object temp;
XSETFASTINT (temp, BEGV);
return temp;
}
DEFUN ("point-min-marker", Fpoint_min_marker, Spoint_min_marker, 0, 0, 0,
"Return a marker to the minimum permissible value of point in this buffer.\n\
This is the beginning, unless narrowing (a buffer restriction) is in effect.")
()
{
return buildmark (BEGV, BEGV_BYTE);
}
DEFUN ("point-max", Fpoint_max, Spoint_max, 0, 0, 0,
"Return the maximum permissible value of point in the current buffer.\n\
This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
is in effect, in which case it is less.")
()
{
Lisp_Object temp;
XSETFASTINT (temp, ZV);
return temp;
}
DEFUN ("point-max-marker", Fpoint_max_marker, Spoint_max_marker, 0, 0, 0,
"Return a marker to the maximum permissible value of point in this buffer.\n\
This is (1+ (buffer-size)), unless narrowing (a buffer restriction)\n\
is in effect, in which case it is less.")
()
{
return buildmark (ZV, ZV_BYTE);
}
DEFUN ("gap-position", Fgap_position, Sgap_position, 0, 0, 0,
"Return the position of the gap, in the current buffer.\n\
See also `gap-size'.")
()
{
Lisp_Object temp;
XSETFASTINT (temp, GPT);
return temp;
}
DEFUN ("gap-size", Fgap_size, Sgap_size, 0, 0, 0,
"Return the size of the current buffer's gap.\n\
See also `gap-position'.")
()
{
Lisp_Object temp;
XSETFASTINT (temp, GAP_SIZE);
return temp;
}
DEFUN ("position-bytes", Fposition_bytes, Sposition_bytes, 1, 1, 0,
"Return the byte position for character position POSITION.\n\
If POSITION is out of range, the value is nil.")
(position)
Lisp_Object position;
{
CHECK_NUMBER_COERCE_MARKER (position, 1);
if (XINT (position) < BEG || XINT (position) > Z)
return Qnil;
return make_number (CHAR_TO_BYTE (XINT (position)));
}
DEFUN ("byte-to-position", Fbyte_to_position, Sbyte_to_position, 1, 1, 0,
"Return the character position for byte position BYTEPOS.\n\
If BYTEPOS is out of range, the value is nil.")
(bytepos)
Lisp_Object bytepos;
{
CHECK_NUMBER (bytepos, 1);
if (XINT (bytepos) < BEG_BYTE || XINT (bytepos) > Z_BYTE)
return Qnil;
return make_number (BYTE_TO_CHAR (XINT (bytepos)));
}
DEFUN ("following-char", Ffollowing_char, Sfollowing_char, 0, 0, 0,
"Return the character following point, as a number.\n\
At the end of the buffer or accessible region, return 0.\n\
If `enable-multibyte-characters' is nil or point is not\n\
at character boundary, multibyte form is ignored,\n\
and only one byte following point is returned as a character.")
()
{
Lisp_Object temp;
if (PT >= ZV)
XSETFASTINT (temp, 0);
else
XSETFASTINT (temp, FETCH_CHAR (PT_BYTE));
return temp;
}
DEFUN ("preceding-char", Fprevious_char, Sprevious_char, 0, 0, 0,
"Return the character preceding point, as a number.\n\
At the beginning of the buffer or accessible region, return 0.\n\
If `enable-multibyte-characters' is nil or point is not\n\
at character boundary, multi-byte form is ignored,\n\
and only one byte preceding point is returned as a character.")
()
{
Lisp_Object temp;
if (PT <= BEGV)
XSETFASTINT (temp, 0);
else if (!NILP (current_buffer->enable_multibyte_characters))
{
int pos = PT_BYTE;
DEC_POS (pos);
XSETFASTINT (temp, FETCH_CHAR (pos));
}
else
XSETFASTINT (temp, FETCH_BYTE (PT_BYTE - 1));
return temp;
}
DEFUN ("bobp", Fbobp, Sbobp, 0, 0, 0,
"Return t if point is at the beginning of the buffer.\n\
If the buffer is narrowed, this means the beginning of the narrowed part.")
()
{
if (PT == BEGV)
return Qt;
return Qnil;
}
DEFUN ("eobp", Feobp, Seobp, 0, 0, 0,
"Return t if point is at the end of the buffer.\n\
If the buffer is narrowed, this means the end of the narrowed part.")
()
{
if (PT == ZV)
return Qt;
return Qnil;
}
DEFUN ("bolp", Fbolp, Sbolp, 0, 0, 0,
"Return t if point is at the beginning of a line.")
()
{
if (PT == BEGV || FETCH_BYTE (PT_BYTE - 1) == '\n')
return Qt;
return Qnil;
}
DEFUN ("eolp", Feolp, Seolp, 0, 0, 0,
"Return t if point is at the end of a line.\n\
`End of a line' includes point being at the end of the buffer.")
()
{
if (PT == ZV || FETCH_BYTE (PT_BYTE) == '\n')
return Qt;
return Qnil;
}
DEFUN ("char-after", Fchar_after, Schar_after, 0, 1, 0,
"Return character in current buffer at position POS.\n\
POS is an integer or a buffer pointer.\n\
If POS is out of range, the value is nil.")
(pos)
Lisp_Object pos;
{
register int pos_byte;
register Lisp_Object val;
if (NILP (pos))
{
pos_byte = PT_BYTE;
XSETFASTINT (pos, PT);
}
if (MARKERP (pos))
{
pos_byte = marker_byte_position (pos);
if (pos_byte < BEGV_BYTE || pos_byte >= ZV_BYTE)
return Qnil;
}
else
{
CHECK_NUMBER_COERCE_MARKER (pos, 0);
if (XINT (pos) < BEGV || XINT (pos) >= ZV)
return Qnil;
pos_byte = CHAR_TO_BYTE (XINT (pos));
}
return make_number (FETCH_CHAR (pos_byte));
}
DEFUN ("char-before", Fchar_before, Schar_before, 0, 1, 0,
"Return character in current buffer preceding position POS.\n\
POS is an integer or a buffer pointer.\n\
If POS is out of range, the value is nil.")
(pos)
Lisp_Object pos;
{
register Lisp_Object val;
register int pos_byte;
if (NILP (pos))
{
pos_byte = PT_BYTE;
XSETFASTINT (pos, PT);
}
if (MARKERP (pos))
{
pos_byte = marker_byte_position (pos);
if (pos_byte <= BEGV_BYTE || pos_byte > ZV_BYTE)
return Qnil;
}
else
{
CHECK_NUMBER_COERCE_MARKER (pos, 0);
if (XINT (pos) <= BEGV || XINT (pos) > ZV)
return Qnil;
pos_byte = CHAR_TO_BYTE (XINT (pos));
}
if (!NILP (current_buffer->enable_multibyte_characters))
{
DEC_POS (pos_byte);
XSETFASTINT (val, FETCH_CHAR (pos_byte));
}
else
{
pos_byte--;
XSETFASTINT (val, FETCH_BYTE (pos_byte));
}
return val;
}
DEFUN ("user-login-name", Fuser_login_name, Suser_login_name, 0, 1, 0,
"Return the name under which the user logged in, as a string.\n\
This is based on the effective uid, not the real uid.\n\
Also, if the environment variable LOGNAME or USER is set,\n\
that determines the value of this function.\n\n\
If optional argument UID is an integer, return the login name of the user\n\
with that uid, or nil if there is no such user.")
(uid)
Lisp_Object uid;
{
struct passwd *pw;
if (INTEGERP (Vuser_login_name))
init_editfns ();
if (NILP (uid))
return Vuser_login_name;
CHECK_NUMBER (uid, 0);
pw = (struct passwd *) getpwuid (XINT (uid));
return (pw ? build_string (pw->pw_name) : Qnil);
}
DEFUN ("user-real-login-name", Fuser_real_login_name, Suser_real_login_name,
0, 0, 0,
"Return the name of the user's real uid, as a string.\n\
This ignores the environment variables LOGNAME and USER, so it differs from\n\
`user-login-name' when running under `su'.")
()
{
if (INTEGERP (Vuser_login_name))
init_editfns ();
return Vuser_real_login_name;
}
DEFUN ("user-uid", Fuser_uid, Suser_uid, 0, 0, 0,
"Return the effective uid of Emacs, as an integer.")
()
{
return make_number (geteuid ());
}
DEFUN ("user-real-uid", Fuser_real_uid, Suser_real_uid, 0, 0, 0,
"Return the real uid of Emacs, as an integer.")
()
{
return make_number (getuid ());
}
DEFUN ("user-full-name", Fuser_full_name, Suser_full_name, 0, 1, 0,
"Return the full name of the user logged in, as a string.\n\
If the full name corresponding to Emacs's userid is not known,\n\
return \"unknown\".\n\
\n\
If optional argument UID is an integer, return the full name of the user\n\
with that uid, or nil if there is no such user.\n\
If UID is a string, return the full name of the user with that login\n\
name, or nil if there is no such user.")
(uid)
Lisp_Object uid;
{
struct passwd *pw;
register unsigned char *p, *q;
extern char *index ();
Lisp_Object full;
if (NILP (uid))
return Vuser_full_name;
else if (NUMBERP (uid))
pw = (struct passwd *) getpwuid (XINT (uid));
else if (STRINGP (uid))
pw = (struct passwd *) getpwnam (XSTRING (uid)->data);
else
error ("Invalid UID specification");
if (!pw)
return Qnil;
p = (unsigned char *) USER_FULL_NAME;
q = (unsigned char *) index (p, ',');
full = make_string (p, q ? q - p : strlen (p));
#ifdef AMPERSAND_FULL_NAME
p = XSTRING (full)->data;
q = (unsigned char *) index (p, '&');
if (q)
{
register unsigned char *r;
Lisp_Object login;
login = Fuser_login_name (make_number (pw->pw_uid));
r = (unsigned char *) alloca (strlen (p) + XSTRING (login)->size + 1);
bcopy (p, r, q - p);
r[q - p] = 0;
strcat (r, XSTRING (login)->data);
r[q - p] = UPCASE (r[q - p]);
strcat (r, q + 1);
full = build_string (r);
}
#endif
return full;
}
DEFUN ("system-name", Fsystem_name, Ssystem_name, 0, 0, 0,
"Return the name of the machine you are running on, as a string.")
()
{
return Vsystem_name;
}
char *
get_system_name ()
{
if (STRINGP (Vsystem_name))
return (char *) XSTRING (Vsystem_name)->data;
else
return "";
}
DEFUN ("emacs-pid", Femacs_pid, Semacs_pid, 0, 0, 0,
"Return the process ID of Emacs, as an integer.")
()
{
return make_number (getpid ());
}
DEFUN ("current-time", Fcurrent_time, Scurrent_time, 0, 0, 0,
"Return the current time, as the number of seconds since 1970-01-01 00:00:00.\n\
The time is returned as a list of three integers. The first has the\n\
most significant 16 bits of the seconds, while the second has the\n\
least significant 16 bits. The third integer gives the microsecond\n\
count.\n\
\n\
The microsecond count is zero on systems that do not provide\n\
resolution finer than a second.")
()
{
EMACS_TIME t;
Lisp_Object result[3];
EMACS_GET_TIME (t);
XSETINT (result[0], (EMACS_SECS (t) >> 16) & 0xffff);
XSETINT (result[1], (EMACS_SECS (t) >> 0) & 0xffff);
XSETINT (result[2], EMACS_USECS (t));
return Flist (3, result);
}
static int
lisp_time_argument (specified_time, result)
Lisp_Object specified_time;
time_t *result;
{
if (NILP (specified_time))
return time (result) != -1;
else
{
Lisp_Object high, low;
high = Fcar (specified_time);
CHECK_NUMBER (high, 0);
low = Fcdr (specified_time);
if (CONSP (low))
low = Fcar (low);
CHECK_NUMBER (low, 0);
*result = (XINT (high) << 16) + (XINT (low) & 0xffff);
return *result >> 16 == XINT (high);
}
}
static size_t
emacs_memftime (s, maxsize, format, format_len, tp)
char *s;
size_t maxsize;
const char *format;
size_t format_len;
const struct tm *tp;
{
size_t total = 0;
for (;;)
{
size_t len;
size_t result;
if (s)
s[0] = '\1';
result = emacs_strftime (s, maxsize, format, tp);
if (s)
{
if (result == 0 && s[0] != '\0')
return 0;
s += result + 1;
}
maxsize -= result + 1;
total += result;
len = strlen (format);
if (len == format_len)
return total;
total++;
format += len + 1;
format_len -= len + 1;
}
}
DEFUN ("format-time-string", Fformat_time_string, Sformat_time_string, 1, 3, 0,
0 )
(format_string, time, universal)
Lisp_Object format_string, time, universal;
{
time_t value;
int size;
struct tm *tm;
CHECK_STRING (format_string, 1);
if (! lisp_time_argument (time, &value))
error ("Invalid time specification");
size = STRING_BYTES (XSTRING (format_string)) * 6 + 50;
tm = NILP (universal) ? localtime (&value) : gmtime (&value);
if (! tm)
error ("Specified time is not representable");
while (1)
{
char *buf = (char *) alloca (size + 1);
int result;
buf[0] = '\1';
result = emacs_memftime (buf, size, XSTRING (format_string)->data,
STRING_BYTES (XSTRING (format_string)),
tm);
if ((result > 0 && result < size) || (result == 0 && buf[0] == '\0'))
return make_string (buf, result);
result = emacs_memftime (NULL, (size_t) -1,
XSTRING (format_string)->data,
STRING_BYTES (XSTRING (format_string)),
tm);
size = result + 1;
}
}
DEFUN ("decode-time", Fdecode_time, Sdecode_time, 0, 1, 0,
"Decode a time value as (SEC MINUTE HOUR DAY MONTH YEAR DOW DST ZONE).\n\
The optional SPECIFIED-TIME should be a list of (HIGH LOW . IGNORED)\n\
or (HIGH . LOW), as from `current-time' and `file-attributes', or `nil'\n\
to use the current time. The list has the following nine members:\n\
SEC is an integer between 0 and 60; SEC is 60 for a leap second, which\n\
only some operating systems support. MINUTE is an integer between 0 and 59.\n\
HOUR is an integer between 0 and 23. DAY is an integer between 1 and 31.\n\
MONTH is an integer between 1 and 12. YEAR is an integer indicating the\n\
four-digit year. DOW is the day of week, an integer between 0 and 6, where\n\
0 is Sunday. DST is t if daylight savings time is effect, otherwise nil.\n\
ZONE is an integer indicating the number of seconds east of Greenwich.\n\
\(Note that Common Lisp has different meanings for DOW and ZONE.)")
(specified_time)
Lisp_Object specified_time;
{
time_t time_spec;
struct tm save_tm;
struct tm *decoded_time;
Lisp_Object list_args[9];
if (! lisp_time_argument (specified_time, &time_spec))
error ("Invalid time specification");
decoded_time = localtime (&time_spec);
if (! decoded_time)
error ("Specified time is not representable");
XSETFASTINT (list_args[0], decoded_time->tm_sec);
XSETFASTINT (list_args[1], decoded_time->tm_min);
XSETFASTINT (list_args[2], decoded_time->tm_hour);
XSETFASTINT (list_args[3], decoded_time->tm_mday);
XSETFASTINT (list_args[4], decoded_time->tm_mon + 1);
XSETINT (list_args[5], decoded_time->tm_year + 1900);
XSETFASTINT (list_args[6], decoded_time->tm_wday);
list_args[7] = (decoded_time->tm_isdst)? Qt : Qnil;
save_tm = *decoded_time;
decoded_time = gmtime (&time_spec);
if (decoded_time == 0)
list_args[8] = Qnil;
else
XSETINT (list_args[8], tm_diff (&save_tm, decoded_time));
return Flist (9, list_args);
}
DEFUN ("encode-time", Fencode_time, Sencode_time, 6, MANY, 0,
"Convert SECOND, MINUTE, HOUR, DAY, MONTH, YEAR and ZONE to internal time.\n\
This is the reverse operation of `decode-time', which see.\n\
ZONE defaults to the current time zone rule. This can\n\
be a string or t (as from `set-time-zone-rule'), or it can be a list\n\
\(as from `current-time-zone') or an integer (as from `decode-time')\n\
applied without consideration for daylight savings time.\n\
\n\
You can pass more than 7 arguments; then the first six arguments\n\
are used as SECOND through YEAR, and the *last* argument is used as ZONE.\n\
The intervening arguments are ignored.\n\
This feature lets (apply 'encode-time (decode-time ...)) work.\n\
\n\
Out-of-range values for SEC, MINUTE, HOUR, DAY, or MONTH are allowed;\n\
for example, a DAY of 0 means the day preceding the given month.\n\
Year numbers less than 100 are treated just like other year numbers.\n\
If you want them to stand for years in this century, you must do that yourself.")
(nargs, args)
int nargs;
register Lisp_Object *args;
{
time_t time;
struct tm tm;
Lisp_Object zone = (nargs > 6 ? args[nargs - 1] : Qnil);
CHECK_NUMBER (args[0], 0);
CHECK_NUMBER (args[1], 1);
CHECK_NUMBER (args[2], 2);
CHECK_NUMBER (args[3], 3);
CHECK_NUMBER (args[4], 4);
CHECK_NUMBER (args[5], 5);
tm.tm_sec = XINT (args[0]);
tm.tm_min = XINT (args[1]);
tm.tm_hour = XINT (args[2]);
tm.tm_mday = XINT (args[3]);
tm.tm_mon = XINT (args[4]) - 1;
tm.tm_year = XINT (args[5]) - 1900;
tm.tm_isdst = -1;
if (CONSP (zone))
zone = Fcar (zone);
if (NILP (zone))
time = mktime (&tm);
else
{
char tzbuf[100];
char *tzstring;
char **oldenv = environ, **newenv;
if (EQ (zone, Qt))
tzstring = "UTC0";
else if (STRINGP (zone))
tzstring = (char *) XSTRING (zone)->data;
else if (INTEGERP (zone))
{
int abszone = abs (XINT (zone));
sprintf (tzbuf, "XXX%s%d:%02d:%02d", "-" + (XINT (zone) < 0),
abszone / (60*60), (abszone/60) % 60, abszone % 60);
tzstring = tzbuf;
}
else
error ("Invalid time zone specification");
set_time_zone_rule (tzstring);
time = mktime (&tm);
newenv = environ;
environ = oldenv;
xfree (newenv);
#ifdef LOCALTIME_CACHE
tzset ();
#endif
}
if (time == (time_t) -1)
error ("Specified time is not representable");
return make_time (time);
}
DEFUN ("current-time-string", Fcurrent_time_string, Scurrent_time_string, 0, 1, 0,
"Return the current time, as a human-readable string.\n\
Programs can use this function to decode a time,\n\
since the number of columns in each field is fixed.\n\
The format is `Sun Sep 16 01:03:52 1973'.\n\
However, see also the functions `decode-time' and `format-time-string'\n\
which provide a much more powerful and general facility.\n\
\n\
If an argument is given, it specifies a time to format\n\
instead of the current time. The argument should have the form:\n\
(HIGH . LOW)\n\
or the form:\n\
(HIGH LOW . IGNORED).\n\
Thus, you can use times obtained from `current-time'\n\
and from `file-attributes'.")
(specified_time)
Lisp_Object specified_time;
{
time_t value;
char buf[30];
register char *tem;
if (! lisp_time_argument (specified_time, &value))
value = -1;
tem = (char *) ctime (&value);
strncpy (buf, tem, 24);
buf[24] = 0;
return build_string (buf);
}
#define TM_YEAR_BASE 1900
static int
tm_diff (a, b)
struct tm *a, *b;
{
int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3);
int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3);
int a100 = a4 / 25 - (a4 % 25 < 0);
int b100 = b4 / 25 - (b4 % 25 < 0);
int a400 = a100 >> 2;
int b400 = b100 >> 2;
int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
int years = a->tm_year - b->tm_year;
int days = (365 * years + intervening_leap_days
+ (a->tm_yday - b->tm_yday));
return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
+ (a->tm_min - b->tm_min))
+ (a->tm_sec - b->tm_sec));
}
DEFUN ("current-time-zone", Fcurrent_time_zone, Scurrent_time_zone, 0, 1, 0,
"Return the offset and name for the local time zone.\n\
This returns a list of the form (OFFSET NAME).\n\
OFFSET is an integer number of seconds ahead of UTC (east of Greenwich).\n\
A negative value means west of Greenwich.\n\
NAME is a string giving the name of the time zone.\n\
If an argument is given, it specifies when the time zone offset is determined\n\
instead of using the current time. The argument should have the form:\n\
(HIGH . LOW)\n\
or the form:\n\
(HIGH LOW . IGNORED).\n\
Thus, you can use times obtained from `current-time'\n\
and from `file-attributes'.\n\
\n\
Some operating systems cannot provide all this information to Emacs;\n\
in this case, `current-time-zone' returns a list containing nil for\n\
the data it can't find.")
(specified_time)
Lisp_Object specified_time;
{
time_t value;
struct tm *t;
struct tm gmt;
if (lisp_time_argument (specified_time, &value)
&& (t = gmtime (&value)) != 0
&& (gmt = *t, t = localtime (&value)) != 0)
{
int offset = tm_diff (t, &gmt);
char *s = 0;
char buf[6];
#ifdef HAVE_TM_ZONE
if (t->tm_zone)
s = (char *)t->tm_zone;
#else
#ifdef HAVE_TZNAME
if (t->tm_isdst == 0 || t->tm_isdst == 1)
s = tzname[t->tm_isdst];
#endif
#endif
if (!s)
{
int am = (offset < 0 ? -offset : offset) / 60;
sprintf (buf, "%c%02d%02d", (offset < 0 ? '-' : '+'), am/60, am%60);
s = buf;
}
return Fcons (make_number (offset), Fcons (build_string (s), Qnil));
}
else
return Fmake_list (make_number (2), Qnil);
}
static char **environbuf;
DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule, 1, 1, 0,
"Set the local time zone using TZ, a string specifying a time zone rule.\n\
If TZ is nil, use implementation-defined default time zone information.\n\
If TZ is t, use Universal Time.")
(tz)
Lisp_Object tz;
{
char *tzstring;
if (NILP (tz))
tzstring = 0;
else if (EQ (tz, Qt))
tzstring = "UTC0";
else
{
CHECK_STRING (tz, 0);
tzstring = (char *) XSTRING (tz)->data;
}
set_time_zone_rule (tzstring);
if (environbuf)
free (environbuf);
environbuf = environ;
return Qnil;
}
#ifdef LOCALTIME_CACHE
static char set_time_zone_rule_tz1[] = "TZ=GMT+0";
static char set_time_zone_rule_tz2[] = "TZ=GMT+1";
#endif
void
set_time_zone_rule (tzstring)
char *tzstring;
{
int envptrs;
char **from, **to, **newenv;
for (from = environ; *from; from++)
continue;
envptrs = from - environ + 2;
newenv = to = (char **) xmalloc (envptrs * sizeof (char *)
+ (tzstring ? strlen (tzstring) + 4 : 0));
if (tzstring)
{
char *t = (char *) (to + envptrs);
strcpy (t, "TZ=");
strcat (t, tzstring);
*to++ = t;
}
for (from = environ; *from; from++)
if (strncmp (*from, "TZ=", 3) != 0)
*to++ = *from;
*to = 0;
environ = newenv;
#ifdef LOCALTIME_CACHE
{
if (tzstring)
{
char *tz = *newenv;
*newenv = (strcmp (tzstring, set_time_zone_rule_tz1 + 3) == 0
? set_time_zone_rule_tz2 : set_time_zone_rule_tz1);
tzset ();
*newenv = tz;
}
else
{
*to = set_time_zone_rule_tz1;
to[1] = 0;
tzset ();
*to = set_time_zone_rule_tz2;
tzset ();
*to = 0;
}
}
tzset ();
#endif
}
void
general_insert_function (insert_func, insert_from_string_func,
inherit, nargs, args)
void (*insert_func) P_ ((unsigned char *, int));
void (*insert_from_string_func) P_ ((Lisp_Object, int, int, int, int, int));
int inherit, nargs;
register Lisp_Object *args;
{
register int argnum;
register Lisp_Object val;
for (argnum = 0; argnum < nargs; argnum++)
{
val = args[argnum];
retry:
if (INTEGERP (val))
{
unsigned char workbuf[4], *str;
int len;
if (!NILP (current_buffer->enable_multibyte_characters))
len = CHAR_STRING (XFASTINT (val), workbuf, str);
else
{
workbuf[0] = (SINGLE_BYTE_CHAR_P (XINT (val))
? XINT (val)
: multibyte_char_to_unibyte (XINT (val), Qnil));
str = workbuf;
len = 1;
}
(*insert_func) (str, len);
}
else if (STRINGP (val))
{
(*insert_from_string_func) (val, 0, 0,
XSTRING (val)->size,
STRING_BYTES (XSTRING (val)),
inherit);
}
else
{
val = wrong_type_argument (Qchar_or_string_p, val);
goto retry;
}
}
}
void
insert1 (arg)
Lisp_Object arg;
{
Finsert (1, &arg);
}
DEFUN ("insert", Finsert, Sinsert, 0, MANY, 0,
"Insert the arguments, either strings or characters, at point.\n\
Point and before-insertion markers move forward to end up\n\
after the inserted text.\n\
Any other markers at the point of insertion remain before the text.\n\
\n\
If the current buffer is multibyte, unibyte strings are converted\n\
to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
If the current buffer is unibyte, multibyte strings are converted\n\
to unibyte for insertion.")
(nargs, args)
int nargs;
register Lisp_Object *args;
{
general_insert_function (insert, insert_from_string, 0, nargs, args);
return Qnil;
}
DEFUN ("insert-and-inherit", Finsert_and_inherit, Sinsert_and_inherit,
0, MANY, 0,
"Insert the arguments at point, inheriting properties from adjoining text.\n\
Point and before-insertion markers move forward to end up\n\
after the inserted text.\n\
Any other markers at the point of insertion remain before the text.\n\
\n\
If the current buffer is multibyte, unibyte strings are converted\n\
to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
If the current buffer is unibyte, multibyte strings are converted\n\
to unibyte for insertion.")
(nargs, args)
int nargs;
register Lisp_Object *args;
{
general_insert_function (insert_and_inherit, insert_from_string, 1,
nargs, args);
return Qnil;
}
DEFUN ("insert-before-markers", Finsert_before_markers, Sinsert_before_markers, 0, MANY, 0,
"Insert strings or characters at point, relocating markers after the text.\n\
Point and markers move forward to end up after the inserted text.\n\
\n\
If the current buffer is multibyte, unibyte strings are converted\n\
to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
If the current buffer is unibyte, multibyte strings are converted\n\
to unibyte for insertion.")
(nargs, args)
int nargs;
register Lisp_Object *args;
{
general_insert_function (insert_before_markers,
insert_from_string_before_markers, 0,
nargs, args);
return Qnil;
}
DEFUN ("insert-before-markers-and-inherit", Finsert_and_inherit_before_markers,
Sinsert_and_inherit_before_markers, 0, MANY, 0,
"Insert text at point, relocating markers and inheriting properties.\n\
Point and markers move forward to end up after the inserted text.\n\
\n\
If the current buffer is multibyte, unibyte strings are converted\n\
to multibyte for insertion (see `unibyte-char-to-multibyte').\n\
If the current buffer is unibyte, multibyte strings are converted\n\
to unibyte for insertion.")
(nargs, args)
int nargs;
register Lisp_Object *args;
{
general_insert_function (insert_before_markers_and_inherit,
insert_from_string_before_markers, 1,
nargs, args);
return Qnil;
}
DEFUN ("insert-char", Finsert_char, Sinsert_char, 2, 3, 0,
"Insert COUNT (second arg) copies of CHARACTER (first arg).\n\
Both arguments are required.\n\
Point, and before-insertion markers, are relocated as in the function `insert'.\n\
The optional third arg INHERIT, if non-nil, says to inherit text properties\n\
from adjoining text, if those properties are sticky.")
(character, count, inherit)
Lisp_Object character, count, inherit;
{
register unsigned char *string;
register int strlen;
register int i, n;
int len;
unsigned char workbuf[4], *str;
CHECK_NUMBER (character, 0);
CHECK_NUMBER (count, 1);
if (!NILP (current_buffer->enable_multibyte_characters))
len = CHAR_STRING (XFASTINT (character), workbuf, str);
else
workbuf[0] = XFASTINT (character), str = workbuf, len = 1;
n = XINT (count) * len;
if (n <= 0)
return Qnil;
strlen = min (n, 256 * len);
string = (unsigned char *) alloca (strlen);
for (i = 0; i < strlen; i++)
string[i] = str[i % len];
while (n >= strlen)
{
QUIT;
if (!NILP (inherit))
insert_and_inherit (string, strlen);
else
insert (string, strlen);
n -= strlen;
}
if (n > 0)
{
if (!NILP (inherit))
insert_and_inherit (string, n);
else
insert (string, n);
}
return Qnil;
}
Lisp_Object
make_buffer_string (start, end, props)
int start, end;
int props;
{
int start_byte = CHAR_TO_BYTE (start);
int end_byte = CHAR_TO_BYTE (end);
return make_buffer_string_both (start, start_byte, end, end_byte, props);
}
Lisp_Object
make_buffer_string_both (start, start_byte, end, end_byte, props)
int start, start_byte, end, end_byte;
int props;
{
Lisp_Object result, tem, tem1;
if (start < GPT && GPT < end)
move_gap (start);
if (! NILP (current_buffer->enable_multibyte_characters))
result = make_uninit_multibyte_string (end - start, end_byte - start_byte);
else
result = make_uninit_string (end - start);
bcopy (BYTE_POS_ADDR (start_byte), XSTRING (result)->data,
end_byte - start_byte);
#ifdef USE_TEXT_PROPERTIES
if (props)
{
update_buffer_properties (start, end);
tem = Fnext_property_change (make_number (start), Qnil, make_number (end));
tem1 = Ftext_properties_at (make_number (start), Qnil);
if (XINT (tem) != end || !NILP (tem1))
copy_intervals_to_string (result, current_buffer, start,
end - start);
}
#endif
return result;
}
static void
update_buffer_properties (start, end)
int start, end;
{
#ifdef USE_TEXT_PROPERTIES
if (!NILP (Vbuffer_access_fontify_functions))
{
Lisp_Object args[3];
Lisp_Object tem;
args[0] = Qbuffer_access_fontify_functions;
XSETINT (args[1], start);
XSETINT (args[2], end);
if (!NILP (Vbuffer_access_fontified_property))
{
tem = Ftext_property_any (args[1], args[2],
Vbuffer_access_fontified_property,
Qnil, Qnil);
if (! NILP (tem))
Frun_hook_with_args (3, args);
}
else
Frun_hook_with_args (3, args);
}
#endif
}
DEFUN ("buffer-substring", Fbuffer_substring, Sbuffer_substring, 2, 2, 0,
"Return the contents of part of the current buffer as a string.\n\
The two arguments START and END are character positions;\n\
they can be in either order.\n\
The string returned is multibyte if the buffer is multibyte.")
(start, end)
Lisp_Object start, end;
{
register int b, e;
validate_region (&start, &end);
b = XINT (start);
e = XINT (end);
return make_buffer_string (b, e, 1);
}
DEFUN ("buffer-substring-no-properties", Fbuffer_substring_no_properties,
Sbuffer_substring_no_properties, 2, 2, 0,
"Return the characters of part of the buffer, without the text properties.\n\
The two arguments START and END are character positions;\n\
they can be in either order.")
(start, end)
Lisp_Object start, end;
{
register int b, e;
validate_region (&start, &end);
b = XINT (start);
e = XINT (end);
return make_buffer_string (b, e, 0);
}
DEFUN ("buffer-string", Fbuffer_string, Sbuffer_string, 0, 0, 0,
"Return the contents of the current buffer as a string.\n\
If narrowing is in effect, this function returns only the visible part\n\
of the buffer.")
()
{
return make_buffer_string (BEGV, ZV, 1);
}
DEFUN ("insert-buffer-substring", Finsert_buffer_substring, Sinsert_buffer_substring,
1, 3, 0,
"Insert before point a substring of the contents of buffer BUFFER.\n\
BUFFER may be a buffer or a buffer name.\n\
Arguments START and END are character numbers specifying the substring.\n\
They default to the beginning and the end of BUFFER.")
(buf, start, end)
Lisp_Object buf, start, end;
{
register int b, e, temp;
register struct buffer *bp, *obuf;
Lisp_Object buffer;
buffer = Fget_buffer (buf);
if (NILP (buffer))
nsberror (buf);
bp = XBUFFER (buffer);
if (NILP (bp->name))
error ("Selecting deleted buffer");
if (NILP (start))
b = BUF_BEGV (bp);
else
{
CHECK_NUMBER_COERCE_MARKER (start, 0);
b = XINT (start);
}
if (NILP (end))
e = BUF_ZV (bp);
else
{
CHECK_NUMBER_COERCE_MARKER (end, 1);
e = XINT (end);
}
if (b > e)
temp = b, b = e, e = temp;
if (!(BUF_BEGV (bp) <= b && e <= BUF_ZV (bp)))
args_out_of_range (start, end);
obuf = current_buffer;
set_buffer_internal_1 (bp);
update_buffer_properties (b, e);
set_buffer_internal_1 (obuf);
insert_from_buffer (bp, b, e - b, 0);
return Qnil;
}
DEFUN ("compare-buffer-substrings", Fcompare_buffer_substrings, Scompare_buffer_substrings,
6, 6, 0,
"Compare two substrings of two buffers; return result as number.\n\
the value is -N if first string is less after N-1 chars,\n\
+N if first string is greater after N-1 chars, or 0 if strings match.\n\
Each substring is represented as three arguments: BUFFER, START and END.\n\
That makes six args in all, three for each substring.\n\n\
The value of `case-fold-search' in the current buffer\n\
determines whether case is significant or ignored.")
(buffer1, start1, end1, buffer2, start2, end2)
Lisp_Object buffer1, start1, end1, buffer2, start2, end2;
{
register int begp1, endp1, begp2, endp2, temp;
register struct buffer *bp1, *bp2;
register Lisp_Object *trt
= (!NILP (current_buffer->case_fold_search)
? XCHAR_TABLE (current_buffer->case_canon_table)->contents : 0);
int chars = 0;
int i1, i2, i1_byte, i2_byte;
if (NILP (buffer1))
bp1 = current_buffer;
else
{
Lisp_Object buf1;
buf1 = Fget_buffer (buffer1);
if (NILP (buf1))
nsberror (buffer1);
bp1 = XBUFFER (buf1);
if (NILP (bp1->name))
error ("Selecting deleted buffer");
}
if (NILP (start1))
begp1 = BUF_BEGV (bp1);
else
{
CHECK_NUMBER_COERCE_MARKER (start1, 1);
begp1 = XINT (start1);
}
if (NILP (end1))
endp1 = BUF_ZV (bp1);
else
{
CHECK_NUMBER_COERCE_MARKER (end1, 2);
endp1 = XINT (end1);
}
if (begp1 > endp1)
temp = begp1, begp1 = endp1, endp1 = temp;
if (!(BUF_BEGV (bp1) <= begp1
&& begp1 <= endp1
&& endp1 <= BUF_ZV (bp1)))
args_out_of_range (start1, end1);
if (NILP (buffer2))
bp2 = current_buffer;
else
{
Lisp_Object buf2;
buf2 = Fget_buffer (buffer2);
if (NILP (buf2))
nsberror (buffer2);
bp2 = XBUFFER (buf2);
if (NILP (bp2->name))
error ("Selecting deleted buffer");
}
if (NILP (start2))
begp2 = BUF_BEGV (bp2);
else
{
CHECK_NUMBER_COERCE_MARKER (start2, 4);
begp2 = XINT (start2);
}
if (NILP (end2))
endp2 = BUF_ZV (bp2);
else
{
CHECK_NUMBER_COERCE_MARKER (end2, 5);
endp2 = XINT (end2);
}
if (begp2 > endp2)
temp = begp2, begp2 = endp2, endp2 = temp;
if (!(BUF_BEGV (bp2) <= begp2
&& begp2 <= endp2
&& endp2 <= BUF_ZV (bp2)))
args_out_of_range (start2, end2);
i1 = begp1;
i2 = begp2;
i1_byte = buf_charpos_to_bytepos (bp1, i1);
i2_byte = buf_charpos_to_bytepos (bp2, i2);
while (i1 < endp1 && i2 < endp2)
{
int c1, c2;
if (! NILP (bp1->enable_multibyte_characters))
{
c1 = BUF_FETCH_MULTIBYTE_CHAR (bp1, i1_byte);
BUF_INC_POS (bp1, i1_byte);
i1++;
}
else
{
c1 = BUF_FETCH_BYTE (bp1, i1);
c1 = unibyte_char_to_multibyte (c1);
i1++;
}
if (! NILP (bp2->enable_multibyte_characters))
{
c2 = BUF_FETCH_MULTIBYTE_CHAR (bp2, i2_byte);
BUF_INC_POS (bp2, i2_byte);
i2++;
}
else
{
c2 = BUF_FETCH_BYTE (bp2, i2);
c2 = unibyte_char_to_multibyte (c2);
i2++;
}
if (trt)
{
c1 = XINT (trt[c1]);
c2 = XINT (trt[c2]);
}
if (c1 < c2)
return make_number (- 1 - chars);
if (c1 > c2)
return make_number (chars + 1);
chars++;
}
if (chars < endp1 - begp1)
return make_number (chars + 1);
else if (chars < endp2 - begp2)
return make_number (- chars - 1);
return make_number (0);
}
static Lisp_Object
subst_char_in_region_unwind (arg)
Lisp_Object arg;
{
return current_buffer->undo_list = arg;
}
static Lisp_Object
subst_char_in_region_unwind_1 (arg)
Lisp_Object arg;
{
return current_buffer->filename = arg;
}
DEFUN ("subst-char-in-region", Fsubst_char_in_region,
Ssubst_char_in_region, 4, 5, 0,
"From START to END, replace FROMCHAR with TOCHAR each time it occurs.\n\
If optional arg NOUNDO is non-nil, don't record this change for undo\n\
and don't mark the buffer as really changed.\n\
Both characters must have the same length of multi-byte form.")
(start, end, fromchar, tochar, noundo)
Lisp_Object start, end, fromchar, tochar, noundo;
{
register int pos, pos_byte, stop, i, len, end_byte;
int changed = 0;
unsigned char fromwork[4], *fromstr, towork[4], *tostr, *p;
int count = specpdl_ptr - specpdl;
int maybe_byte_combining = 0;
validate_region (&start, &end);
CHECK_NUMBER (fromchar, 2);
CHECK_NUMBER (tochar, 3);
if (! NILP (current_buffer->enable_multibyte_characters))
{
len = CHAR_STRING (XFASTINT (fromchar), fromwork, fromstr);
if (CHAR_STRING (XFASTINT (tochar), towork, tostr) != len)
error ("Characters in subst-char-in-region have different byte-lengths");
if (len == 1)
maybe_byte_combining = !ASCII_BYTE_P (*tostr);
}
else
{
len = 1;
fromwork[0] = XFASTINT (fromchar), fromstr = fromwork;
towork[0] = XFASTINT (tochar), tostr = towork;
}
pos = XINT (start);
pos_byte = CHAR_TO_BYTE (pos);
stop = CHAR_TO_BYTE (XINT (end));
end_byte = stop;
if (!NILP (noundo))
{
record_unwind_protect (subst_char_in_region_unwind,
current_buffer->undo_list);
current_buffer->undo_list = Qt;
record_unwind_protect (subst_char_in_region_unwind_1,
current_buffer->filename);
current_buffer->filename = Qnil;
}
if (pos_byte < GPT_BYTE)
stop = min (stop, GPT_BYTE);
while (1)
{
int pos_byte_next = pos_byte;
if (pos_byte >= stop)
{
if (pos_byte >= end_byte) break;
stop = end_byte;
}
p = BYTE_POS_ADDR (pos_byte);
INC_POS (pos_byte_next);
if (pos_byte_next - pos_byte == len
&& p[0] == fromstr[0]
&& (len == 1
|| (p[1] == fromstr[1]
&& (len == 2 || (p[2] == fromstr[2]
&& (len == 3 || p[3] == fromstr[3]))))))
{
if (! changed)
{
modify_region (current_buffer, XINT (start), XINT (end));
if (! NILP (noundo))
{
if (MODIFF - 1 == SAVE_MODIFF)
SAVE_MODIFF++;
if (MODIFF - 1 == current_buffer->auto_save_modified)
current_buffer->auto_save_modified++;
}
changed = 1;
}
if (maybe_byte_combining
&& (CHAR_HEAD_P (*tostr)
? ! CHAR_HEAD_P (FETCH_BYTE (pos_byte + 1))
: (pos_byte > BEG_BYTE
&& ! ASCII_BYTE_P (FETCH_BYTE (pos_byte - 1)))))
{
Lisp_Object tem, string;
struct gcpro gcpro1;
tem = current_buffer->undo_list;
GCPRO1 (tem);
string = make_multibyte_string (tostr, 1, 1);
replace_range (pos, pos + 1, string,
0, 0, 1);
pos_byte_next = CHAR_TO_BYTE (pos);
if (pos_byte_next > pos_byte)
pos--;
else
INC_POS (pos_byte_next);
if (! NILP (noundo))
current_buffer->undo_list = tem;
UNGCPRO;
}
else
{
if (NILP (noundo))
record_change (pos, 1);
for (i = 0; i < len; i++) *p++ = tostr[i];
}
}
pos_byte = pos_byte_next;
pos++;
}
if (changed)
signal_after_change (XINT (start),
XINT (end) - XINT (start), XINT (end) - XINT (start));
unbind_to (count, Qnil);
return Qnil;
}
DEFUN ("translate-region", Ftranslate_region, Stranslate_region, 3, 3, 0,
"From START to END, translate characters according to TABLE.\n\
TABLE is a string; the Nth character in it is the mapping\n\
for the character with code N.\n\
This function does not alter multibyte characters.\n\
It returns the number of characters changed.")
(start, end, table)
Lisp_Object start;
Lisp_Object end;
register Lisp_Object table;
{
register int pos_byte, stop;
register unsigned char *tt;
register int nc;
int cnt;
int size;
int pos;
int multibyte = !NILP (current_buffer->enable_multibyte_characters);
validate_region (&start, &end);
CHECK_STRING (table, 2);
size = STRING_BYTES (XSTRING (table));
tt = XSTRING (table)->data;
pos_byte = CHAR_TO_BYTE (XINT (start));
stop = CHAR_TO_BYTE (XINT (end));
modify_region (current_buffer, XINT (start), XINT (end));
pos = XINT (start);
cnt = 0;
for (; pos_byte < stop; )
{
register unsigned char *p = BYTE_POS_ADDR (pos_byte);
int len;
int oc;
int pos_byte_next;
if (multibyte)
oc = STRING_CHAR_AND_LENGTH (p, stop - pos_byte, len);
else
oc = *p, len = 1;
pos_byte_next = pos_byte + len;
if (oc < size && len == 1)
{
nc = tt[oc];
if (nc != oc)
{
if (multibyte
&& !ASCII_BYTE_P (nc)
&& (CHAR_HEAD_P (nc)
? ! CHAR_HEAD_P (FETCH_BYTE (pos_byte + 1))
: (pos_byte > BEG_BYTE
&& ! ASCII_BYTE_P (FETCH_BYTE (pos_byte - 1)))))
{
Lisp_Object string;
string = make_multibyte_string (tt + oc, 1, 1);
replace_range (pos, pos + 1, string,
1, 0, 1);
pos_byte_next = CHAR_TO_BYTE (pos);
if (pos_byte_next > pos_byte)
pos--;
else
INC_POS (pos_byte_next);
}
else
{
record_change (pos, 1);
*p = nc;
signal_after_change (pos, 1, 1);
}
++cnt;
}
}
pos_byte = pos_byte_next;
pos++;
}
return make_number (cnt);
}
DEFUN ("delete-region", Fdelete_region, Sdelete_region, 2, 2, "r",
"Delete the text between point and mark.\n\
When called from a program, expects two arguments,\n\
positions (integers or markers) specifying the stretch to be deleted.")
(start, end)
Lisp_Object start, end;
{
validate_region (&start, &end);
del_range (XINT (start), XINT (end));
return Qnil;
}
DEFUN ("widen", Fwiden, Swiden, 0, 0, "",
"Remove restrictions (narrowing) from current buffer.\n\
This allows the buffer's full text to be seen and edited.")
()
{
if (BEG != BEGV || Z != ZV)
current_buffer->clip_changed = 1;
BEGV = BEG;
BEGV_BYTE = BEG_BYTE;
SET_BUF_ZV_BOTH (current_buffer, Z, Z_BYTE);
invalidate_current_column ();
return Qnil;
}
DEFUN ("narrow-to-region", Fnarrow_to_region, Snarrow_to_region, 2, 2, "r",
"Restrict editing in this buffer to the current region.\n\
The rest of the text becomes temporarily invisible and untouchable\n\
but is not deleted; if you save the buffer in a file, the invisible\n\
text is included in the file. \\[widen] makes all visible again.\n\
See also `save-restriction'.\n\
\n\
When calling from a program, pass two arguments; positions (integers\n\
or markers) bounding the text that should remain visible.")
(start, end)
register Lisp_Object start, end;
{
CHECK_NUMBER_COERCE_MARKER (start, 0);
CHECK_NUMBER_COERCE_MARKER (end, 1);
if (XINT (start) > XINT (end))
{
Lisp_Object tem;
tem = start; start = end; end = tem;
}
if (!(BEG <= XINT (start) && XINT (start) <= XINT (end) && XINT (end) <= Z))
args_out_of_range (start, end);
if (BEGV != XFASTINT (start) || ZV != XFASTINT (end))
current_buffer->clip_changed = 1;
SET_BUF_BEGV (current_buffer, XFASTINT (start));
SET_BUF_ZV (current_buffer, XFASTINT (end));
if (PT < XFASTINT (start))
SET_PT (XFASTINT (start));
if (PT > XFASTINT (end))
SET_PT (XFASTINT (end));
invalidate_current_column ();
return Qnil;
}
Lisp_Object
save_restriction_save ()
{
register Lisp_Object bottom, top;
XSETFASTINT (bottom, BEGV - BEG);
XSETFASTINT (top, Z - ZV);
return Fcons (Fcurrent_buffer (), Fcons (bottom, top));
}
Lisp_Object
save_restriction_restore (data)
Lisp_Object data;
{
register struct buffer *buf;
register int newhead, newtail;
register Lisp_Object tem;
int obegv, ozv;
buf = XBUFFER (XCONS (data)->car);
data = XCONS (data)->cdr;
tem = XCONS (data)->car;
newhead = XINT (tem);
tem = XCONS (data)->cdr;
newtail = XINT (tem);
if (newhead + newtail > BUF_Z (buf) - BUF_BEG (buf))
{
newhead = 0;
newtail = 0;
}
obegv = BUF_BEGV (buf);
ozv = BUF_ZV (buf);
SET_BUF_BEGV (buf, BUF_BEG (buf) + newhead);
SET_BUF_ZV (buf, BUF_Z (buf) - newtail);
if (obegv != BUF_BEGV (buf) || ozv != BUF_ZV (buf))
current_buffer->clip_changed = 1;
SET_BUF_PT_BOTH (buf,
clip_to_bounds (BUF_BEGV (buf), BUF_PT (buf), BUF_ZV (buf)),
clip_to_bounds (BUF_BEGV_BYTE (buf), BUF_PT_BYTE (buf),
BUF_ZV_BYTE (buf)));
return Qnil;
}
DEFUN ("save-restriction", Fsave_restriction, Ssave_restriction, 0, UNEVALLED, 0,
"Execute BODY, saving and restoring current buffer's restrictions.\n\
The buffer's restrictions make parts of the beginning and end invisible.\n\
\(They are set up with `narrow-to-region' and eliminated with `widen'.)\n\
This special form, `save-restriction', saves the current buffer's restrictions\n\
when it is entered, and restores them when it is exited.\n\
So any `narrow-to-region' within BODY lasts only until the end of the form.\n\
The old restrictions settings are restored\n\
even in case of abnormal exit (throw or error).\n\
\n\
The value returned is the value of the last form in BODY.\n\
\n\
`save-restriction' can get confused if, within the BODY, you widen\n\
and then make changes outside the area within the saved restrictions.\n\
See Info node `(elisp)Narrowing' for details and an appropriate technique.\n\
\n\
Note: if you are using both `save-excursion' and `save-restriction',\n\
use `save-excursion' outermost:\n\
(save-excursion (save-restriction ...))")
(body)
Lisp_Object body;
{
register Lisp_Object val;
int count = specpdl_ptr - specpdl;
record_unwind_protect (save_restriction_restore, save_restriction_save ());
val = Fprogn (body);
return unbind_to (count, val);
}
static char *message_text;
static int message_length;
DEFUN ("message", Fmessage, Smessage, 1, MANY, 0,
"Print a one-line message at the bottom of the screen.\n\
The first argument is a format control string, and the rest are data\n\
to be formatted under control of the string. See `format' for details.\n\
\n\
If the first argument is nil, clear any existing message; let the\n\
minibuffer contents show.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
if (NILP (args[0]))
{
message (0);
return Qnil;
}
else
{
register Lisp_Object val;
val = Fformat (nargs, args);
if (! message_text)
{
message_text = (char *)xmalloc (80);
message_length = 80;
}
if (STRING_BYTES (XSTRING (val)) > message_length)
{
message_length = STRING_BYTES (XSTRING (val));
message_text = (char *)xrealloc (message_text, message_length);
}
bcopy (XSTRING (val)->data, message_text, STRING_BYTES (XSTRING (val)));
message2 (message_text, STRING_BYTES (XSTRING (val)),
STRING_MULTIBYTE (val));
return val;
}
}
DEFUN ("message-box", Fmessage_box, Smessage_box, 1, MANY, 0,
"Display a message, in a dialog box if possible.\n\
If a dialog box is not available, use the echo area.\n\
The first argument is a format control string, and the rest are data\n\
to be formatted under control of the string. See `format' for details.\n\
\n\
If the first argument is nil, clear any existing message; let the\n\
minibuffer contents show.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
if (NILP (args[0]))
{
message (0);
return Qnil;
}
else
{
register Lisp_Object val;
val = Fformat (nargs, args);
#ifdef HAVE_MENUS
{
Lisp_Object pane, menu, obj;
struct gcpro gcpro1;
pane = Fcons (Fcons (build_string ("OK"), Qt), Qnil);
GCPRO1 (pane);
menu = Fcons (val, pane);
obj = Fx_popup_dialog (Qt, menu);
UNGCPRO;
return val;
}
#else
if (! message_text)
{
message_text = (char *)xmalloc (80);
message_length = 80;
}
if (STRING_BYTES (XSTRING (val)) > message_length)
{
message_length = STRING_BYTES (XSTRING (val));
message_text = (char *)xrealloc (message_text, message_length);
}
bcopy (XSTRING (val)->data, message_text, STRING_BYTES (XSTRING (val)));
message2 (message_text, STRING_BYTES (XSTRING (val)),
STRING_MULTIBYTE (val));
return val;
#endif
}
}
#ifdef HAVE_MENUS
extern Lisp_Object last_nonmenu_event;
#endif
DEFUN ("message-or-box", Fmessage_or_box, Smessage_or_box, 1, MANY, 0,
"Display a message in a dialog box or in the echo area.\n\
If this command was invoked with the mouse, use a dialog box.\n\
Otherwise, use the echo area.\n\
The first argument is a format control string, and the rest are data\n\
to be formatted under control of the string. See `format' for details.\n\
\n\
If the first argument is nil, clear any existing message; let the\n\
minibuffer contents show.")
(nargs, args)
int nargs;
Lisp_Object *args;
{
#ifdef HAVE_MENUS
if (NILP (last_nonmenu_event) || CONSP (last_nonmenu_event))
return Fmessage_box (nargs, args);
#endif
return Fmessage (nargs, args);
}
DEFUN ("current-message", Fcurrent_message, Scurrent_message, 0, 0, 0,
"Return the string currently displayed in the echo area, or nil if none.")
()
{
return (echo_area_glyphs
? make_string (echo_area_glyphs, echo_area_glyphs_length)
: Qnil);
}
#define CONVERTED_BYTE_SIZE(MULTIBYTE, STRING) \
(((MULTIBYTE) && ! STRING_MULTIBYTE (STRING)) \
? count_size_as_multibyte (XSTRING (STRING)->data, \
STRING_BYTES (XSTRING (STRING))) \
: STRING_BYTES (XSTRING (STRING)))
DEFUN ("format", Fformat, Sformat, 1, MANY, 0,
"Format a string out of a control-string and arguments.\n\
The first argument is a control string.\n\
The other arguments are substituted into it to make the result, a string.\n\
It may contain %-sequences meaning to substitute the next argument.\n\
%s means print a string argument. Actually, prints any object, with `princ'.\n\
%d means print as number in decimal (%o octal, %x hex).\n\
%e means print a number in exponential notation.\n\
%f means print a number in decimal-point notation.\n\
%g means print a number in exponential notation\n\
or decimal-point notation, whichever uses fewer characters.\n\
%c means print a number as a single character.\n\
%S means print any object as an s-expression (using `prin1').\n\
The argument used for %d, %o, %x, %e, %f, %g or %c must be a number.\n\
Use %% to put a single % into the output.")
(nargs, args)
int nargs;
register Lisp_Object *args;
{
register int n;
register int total;
char *buf, *p;
register unsigned char *format, *end;
int length, nchars;
int multibyte = 0;
int maybe_combine_byte;
unsigned char *this_format;
int longest_format;
Lisp_Object val;
extern char *index ();
for (n = 0; n < nargs; n++)
if (STRINGP (args[n]) && STRING_MULTIBYTE (args[n]))
multibyte = 1;
CHECK_STRING (args[0], 0);
retry:
format = XSTRING (args[0])->data;
end = format + STRING_BYTES (XSTRING (args[0]));
longest_format = 0;
total = 5 + CONVERTED_BYTE_SIZE (multibyte, args[0]);
n = 0;
while (format != end)
if (*format++ == '%')
{
int minlen, thissize = 0;
unsigned char *this_format_start = format - 1;
minlen = atoi (format);
if (minlen < 0)
minlen = - minlen;
while ((*format >= '0' && *format <= '9')
|| *format == '-' || *format == ' ' || *format == '.')
format++;
if (format - this_format_start + 1 > longest_format)
longest_format = format - this_format_start + 1;
if (format == end)
error ("Format string ends in middle of format specifier");
if (*format == '%')
format++;
else if (++n >= nargs)
error ("Not enough arguments for format string");
else if (*format == 'S')
{
register Lisp_Object tem;
tem = Fprin1_to_string (args[n], Qnil);
if (STRING_MULTIBYTE (tem) && ! multibyte)
{
multibyte = 1;
goto retry;
}
args[n] = tem;
goto string;
}
else if (SYMBOLP (args[n]))
{
XSETSTRING (args[n], XSYMBOL (args[n])->name);
if (STRING_MULTIBYTE (args[n]) && ! multibyte)
{
multibyte = 1;
goto retry;
}
goto string;
}
else if (STRINGP (args[n]))
{
string:
if (*format != 's' && *format != 'S')
error ("Format specifier doesn't match argument type");
thissize = CONVERTED_BYTE_SIZE (multibyte, args[n]);
}
else if (INTEGERP (args[n]) && *format != 's')
{
#ifdef LISP_FLOAT_TYPE
if (*format == 'e' || *format == 'f' || *format == 'g')
args[n] = Ffloat (args[n]);
else
#endif
if (*format != 'd' && *format != 'o' && *format != 'x'
&& *format != 'i' && *format != 'X' && *format != 'c')
error ("Invalid format operation %%%c", *format);
thissize = 30;
if (*format == 'c'
&& (! SINGLE_BYTE_CHAR_P (XINT (args[n]))
|| XINT (args[n]) == 0))
{
if (! multibyte)
{
multibyte = 1;
goto retry;
}
args[n] = Fchar_to_string (args[n]);
thissize = STRING_BYTES (XSTRING (args[n]));
}
}
#ifdef LISP_FLOAT_TYPE
else if (FLOATP (args[n]) && *format != 's')
{
if (! (*format == 'e' || *format == 'f' || *format == 'g'))
args[n] = Ftruncate (args[n], Qnil);
thissize = 200;
}
#endif
else
{
register Lisp_Object tem;
tem = Fprin1_to_string (args[n], Qt);
if (STRING_MULTIBYTE (tem) & ! multibyte)
{
multibyte = 1;
goto retry;
}
args[n] = tem;
goto string;
}
if (thissize < minlen)
thissize = minlen;
total += thissize + 4;
}
this_format = (unsigned char *) alloca (longest_format + 1);
if (total < 1000)
buf = (char *) alloca (total + 1);
else
buf = (char *) xmalloc (total + 1);
p = buf;
nchars = 0;
n = 0;
format = XSTRING (args[0])->data;
maybe_combine_byte = 0;
while (format != end)
{
if (*format == '%')
{
int minlen;
int negative = 0;
unsigned char *this_format_start = format;
format++;
minlen = atoi (format);
if (minlen < 0)
minlen = - minlen, negative = 1;
while ((*format >= '0' && *format <= '9')
|| *format == '-' || *format == ' ' || *format == '.')
format++;
if (*format++ == '%')
{
*p++ = '%';
nchars++;
continue;
}
++n;
if (STRINGP (args[n]))
{
int padding, nbytes;
int width = strwidth (XSTRING (args[n])->data,
STRING_BYTES (XSTRING (args[n])));
padding = minlen - width;
if (! negative)
while (padding-- > 0)
{
*p++ = ' ';
nchars++;
}
if (p > buf
&& multibyte
&& !ASCII_BYTE_P (*((unsigned char *) p - 1))
&& STRING_MULTIBYTE (args[n])
&& !CHAR_HEAD_P (XSTRING (args[n])->data[0]))
maybe_combine_byte = 1;
nbytes = copy_text (XSTRING (args[n])->data, p,
STRING_BYTES (XSTRING (args[n])),
STRING_MULTIBYTE (args[n]), multibyte);
p += nbytes;
nchars += XSTRING (args[n])->size;
if (negative)
while (padding-- > 0)
{
*p++ = ' ';
nchars++;
}
}
else if (INTEGERP (args[n]) || FLOATP (args[n]))
{
int this_nchars;
bcopy (this_format_start, this_format,
format - this_format_start);
this_format[format - this_format_start] = 0;
if (INTEGERP (args[n]))
sprintf (p, this_format, XINT (args[n]));
else
sprintf (p, this_format, XFLOAT (args[n])->data);
if (p > buf
&& multibyte
&& !ASCII_BYTE_P (*((unsigned char *) p - 1))
&& !CHAR_HEAD_P (*((unsigned char *) p)))
maybe_combine_byte = 1;
this_nchars = strlen (p);
p += this_nchars;
nchars += this_nchars;
}
}
else if (STRING_MULTIBYTE (args[0]))
{
if (p > buf
&& multibyte
&& !ASCII_BYTE_P (*((unsigned char *) p - 1))
&& !CHAR_HEAD_P (*format))
maybe_combine_byte = 1;
*p++ = *format++;
while (! CHAR_HEAD_P (*format)) *p++ = *format++;
nchars++;
}
else if (multibyte)
{
int len = copy_text (format, p, 1, 0, 1);
p += len;
format++;
nchars++;
}
else
*p++ = *format++, nchars++;
}
if (maybe_combine_byte)
nchars = multibyte_chars_in_text (buf, p - buf);
val = make_specified_string (buf, nchars, p - buf, multibyte);
if (total >= 1000)
xfree (buf);
return val;
}
Lisp_Object
#ifdef NO_ARG_ARRAY
format1 (string1, arg0, arg1, arg2, arg3, arg4)
EMACS_INT arg0, arg1, arg2, arg3, arg4;
#else
format1 (string1)
#endif
char *string1;
{
char buf[100];
#ifdef NO_ARG_ARRAY
EMACS_INT args[5];
args[0] = arg0;
args[1] = arg1;
args[2] = arg2;
args[3] = arg3;
args[4] = arg4;
doprnt (buf, sizeof buf, string1, (char *)0, 5, (char **) args);
#else
doprnt (buf, sizeof buf, string1, (char *)0, 5, &string1 + 1);
#endif
return build_string (buf);
}
DEFUN ("char-equal", Fchar_equal, Schar_equal, 2, 2, 0,
"Return t if two characters match, optionally ignoring case.\n\
Both arguments must be characters (i.e. integers).\n\
Case is ignored if `case-fold-search' is non-nil in the current buffer.")
(c1, c2)
register Lisp_Object c1, c2;
{
int i1, i2;
CHECK_NUMBER (c1, 0);
CHECK_NUMBER (c2, 1);
if (XINT (c1) == XINT (c2))
return Qt;
if (NILP (current_buffer->case_fold_search))
return Qnil;
i1 = DOWNCASE (XFASTINT (c1));
i2 = DOWNCASE (XFASTINT (c2));
return (i1 == i2 ? Qt : Qnil);
}
void
transpose_markers (start1, end1, start2, end2,
start1_byte, end1_byte, start2_byte, end2_byte)
register int start1, end1, start2, end2;
register int start1_byte, end1_byte, start2_byte, end2_byte;
{
register int amt1, amt1_byte, amt2, amt2_byte, diff, diff_byte, mpos;
register Lisp_Object marker;
if (PT < start1)
;
else if (PT < end1)
TEMP_SET_PT_BOTH (PT + (end2 - end1),
PT_BYTE + (end2_byte - end1_byte));
else if (PT < start2)
TEMP_SET_PT_BOTH (PT + (end2 - start2) - (end1 - start1),
(PT_BYTE + (end2_byte - start2_byte)
- (end1_byte - start1_byte)));
else if (PT < end2)
TEMP_SET_PT_BOTH (PT - (start2 - start1),
PT_BYTE - (start2_byte - start1_byte));
diff = (end2 - start2) - (end1 - start1);
diff_byte = (end2_byte - start2_byte) - (end1_byte - start1_byte);
amt1 = (end2 - start2) + (start2 - end1);
amt2 = (end1 - start1) + (start2 - end1);
amt1_byte = (end2_byte - start2_byte) + (start2_byte - end1_byte);
amt2_byte = (end1_byte - start1_byte) + (start2_byte - end1_byte);
for (marker = BUF_MARKERS (current_buffer); !NILP (marker);
marker = XMARKER (marker)->chain)
{
mpos = marker_byte_position (marker);
if (mpos >= start1_byte && mpos < end2_byte)
{
if (mpos < end1_byte)
mpos += amt1_byte;
else if (mpos < start2_byte)
mpos += diff_byte;
else
mpos -= amt2_byte;
XMARKER (marker)->bytepos = mpos;
}
mpos = XMARKER (marker)->charpos;
if (mpos >= start1 && mpos < end2)
{
if (mpos < end1)
mpos += amt1;
else if (mpos < start2)
mpos += diff;
else
mpos -= amt2;
}
XMARKER (marker)->charpos = mpos;
}
}
DEFUN ("transpose-regions", Ftranspose_regions, Stranspose_regions, 4, 5, 0,
"Transpose region START1 to END1 with START2 to END2.\n\
The regions may not be overlapping, because the size of the buffer is\n\
never changed in a transposition.\n\
\n\
Optional fifth arg LEAVE_MARKERS, if non-nil, means don't update\n\
any markers that happen to be located in the regions.\n\
\n\
Transposing beyond buffer boundaries is an error.")
(startr1, endr1, startr2, endr2, leave_markers)
Lisp_Object startr1, endr1, startr2, endr2, leave_markers;
{
register int start1, end1, start2, end2;
int start1_byte, start2_byte, len1_byte, len2_byte;
int gap, len1, len_mid, len2;
unsigned char *start1_addr, *start2_addr, *temp;
int combined_before_bytes_1, combined_after_bytes_1;
int combined_before_bytes_2, combined_after_bytes_2;
struct gcpro gcpro1, gcpro2;
#ifdef USE_TEXT_PROPERTIES
INTERVAL cur_intv, tmp_interval1, tmp_interval_mid, tmp_interval2;
cur_intv = BUF_INTERVALS (current_buffer);
#endif
validate_region (&startr1, &endr1);
validate_region (&startr2, &endr2);
start1 = XFASTINT (startr1);
end1 = XFASTINT (endr1);
start2 = XFASTINT (startr2);
end2 = XFASTINT (endr2);
gap = GPT;
if (start2 < end1)
{
register int glumph = start1;
start1 = start2;
start2 = glumph;
glumph = end1;
end1 = end2;
end2 = glumph;
}
len1 = end1 - start1;
len2 = end2 - start2;
if (start2 < end1)
error ("Transposed regions overlap");
else if (start1 == end1 || start2 == end2)
error ("Transposed region has length 0");
if (start1 < gap && gap < end2)
{
if (gap - start1 < end2 - gap)
move_gap (start1);
else
move_gap (end2);
}
start1_byte = CHAR_TO_BYTE (start1);
start2_byte = CHAR_TO_BYTE (start2);
len1_byte = CHAR_TO_BYTE (end1) - start1_byte;
len2_byte = CHAR_TO_BYTE (end2) - start2_byte;
if (end1 == start2)
{
combined_before_bytes_2
= count_combining_before (BYTE_POS_ADDR (start2_byte),
len2_byte, start1, start1_byte);
combined_before_bytes_1
= count_combining_before (BYTE_POS_ADDR (start1_byte),
len1_byte, end2, start2_byte + len2_byte);
combined_after_bytes_1
= count_combining_after (BYTE_POS_ADDR (start1_byte),
len1_byte, end2, start2_byte + len2_byte);
combined_after_bytes_2 = 0;
}
else
{
combined_before_bytes_2
= count_combining_before (BYTE_POS_ADDR (start2_byte),
len2_byte, start1, start1_byte);
combined_before_bytes_1
= count_combining_before (BYTE_POS_ADDR (start1_byte),
len1_byte, start2, start2_byte);
combined_after_bytes_2
= count_combining_after (BYTE_POS_ADDR (start2_byte),
len2_byte, end1, start1_byte + len1_byte);
combined_after_bytes_1
= count_combining_after (BYTE_POS_ADDR (start1_byte),
len1_byte, end2, start2_byte + len2_byte);
}
if (combined_before_bytes_1 || combined_before_bytes_2
|| combined_after_bytes_1 || combined_after_bytes_2)
{
Lisp_Object text1, text2;
text1 = text2 = Qnil;
GCPRO2 (text1, text2);
text1 = make_buffer_string_both (start1, start1_byte,
end1, start1_byte + len1_byte, 1);
text2 = make_buffer_string_both (start2, start2_byte,
end2, start2_byte + len2_byte, 1);
transpose_markers (start1, end1, start2, end2,
start1_byte, start1_byte + len1_byte,
start2_byte, start2_byte + len2_byte);
replace_range (start2, end2, text1, 1, 0, 0);
replace_range (start1, end1, text2, 1, 0, 0);
UNGCPRO;
return Qnil;
}
if (end1 == start2)
{
modify_region (current_buffer, start1, end2);
record_change (start1, len1 + len2);
#ifdef USE_TEXT_PROPERTIES
tmp_interval1 = copy_intervals (cur_intv, start1, len1);
tmp_interval2 = copy_intervals (cur_intv, start2, len2);
Fset_text_properties (make_number (start1), make_number (end2),
Qnil, Qnil);
#endif
if (len1_byte < len2_byte)
{
if (len2_byte > 20000)
temp = (unsigned char *) xmalloc (len2_byte);
else
temp = (unsigned char *) alloca (len2_byte);
start1_addr = BYTE_POS_ADDR (start1_byte);
start2_addr = BYTE_POS_ADDR (start2_byte);
bcopy (start2_addr, temp, len2_byte);
bcopy (start1_addr, start1_addr + len2_byte, len1_byte);
bcopy (temp, start1_addr, len2_byte);
if (len2_byte > 20000)
free (temp);
}
else
{
if (len1_byte > 20000)
temp = (unsigned char *) xmalloc (len1_byte);
else
temp = (unsigned char *) alloca (len1_byte);
start1_addr = BYTE_POS_ADDR (start1_byte);
start2_addr = BYTE_POS_ADDR (start2_byte);
bcopy (start1_addr, temp, len1_byte);
bcopy (start2_addr, start1_addr, len2_byte);
bcopy (temp, start1_addr + len2_byte, len1_byte);
if (len1_byte > 20000)
free (temp);
}
#ifdef USE_TEXT_PROPERTIES
graft_intervals_into_buffer (tmp_interval1, start1 + len2,
len1, current_buffer, 0);
graft_intervals_into_buffer (tmp_interval2, start1,
len2, current_buffer, 0);
#endif
}
else
{
len_mid = start2_byte - (start1_byte + len1_byte);
if (len1_byte == len2_byte)
{
modify_region (current_buffer, start1, end1);
modify_region (current_buffer, start2, end2);
record_change (start1, len1);
record_change (start2, len2);
#ifdef USE_TEXT_PROPERTIES
tmp_interval1 = copy_intervals (cur_intv, start1, len1);
tmp_interval2 = copy_intervals (cur_intv, start2, len2);
Fset_text_properties (make_number (start1), make_number (end1),
Qnil, Qnil);
Fset_text_properties (make_number (start2), make_number (end2),
Qnil, Qnil);
#endif
if (len1_byte > 20000)
temp = (unsigned char *) xmalloc (len1_byte);
else
temp = (unsigned char *) alloca (len1_byte);
start1_addr = BYTE_POS_ADDR (start1_byte);
start2_addr = BYTE_POS_ADDR (start2_byte);
bcopy (start1_addr, temp, len1_byte);
bcopy (start2_addr, start1_addr, len2_byte);
bcopy (temp, start2_addr, len1_byte);
if (len1_byte > 20000)
free (temp);
#ifdef USE_TEXT_PROPERTIES
graft_intervals_into_buffer (tmp_interval1, start2,
len1, current_buffer, 0);
graft_intervals_into_buffer (tmp_interval2, start1,
len2, current_buffer, 0);
#endif
}
else if (len1_byte < len2_byte)
{
modify_region (current_buffer, start1, end2);
record_change (start1, (end2 - start1));
#ifdef USE_TEXT_PROPERTIES
tmp_interval1 = copy_intervals (cur_intv, start1, len1);
tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid);
tmp_interval2 = copy_intervals (cur_intv, start2, len2);
Fset_text_properties (make_number (start1), make_number (end2),
Qnil, Qnil);
#endif
if (len2_byte > 20000)
temp = (unsigned char *) xmalloc (len2_byte);
else
temp = (unsigned char *) alloca (len2_byte);
start1_addr = BYTE_POS_ADDR (start1_byte);
start2_addr = BYTE_POS_ADDR (start2_byte);
bcopy (start2_addr, temp, len2_byte);
bcopy (start1_addr, start1_addr + len_mid + len2_byte, len1_byte);
safe_bcopy (start1_addr + len1_byte, start1_addr + len2_byte, len_mid);
bcopy (temp, start1_addr, len2_byte);
if (len2_byte > 20000)
free (temp);
#ifdef USE_TEXT_PROPERTIES
graft_intervals_into_buffer (tmp_interval1, end2 - len1,
len1, current_buffer, 0);
graft_intervals_into_buffer (tmp_interval_mid, start1 + len2,
len_mid, current_buffer, 0);
graft_intervals_into_buffer (tmp_interval2, start1,
len2, current_buffer, 0);
#endif
}
else
{
record_change (start1, (end2 - start1));
modify_region (current_buffer, start1, end2);
#ifdef USE_TEXT_PROPERTIES
tmp_interval1 = copy_intervals (cur_intv, start1, len1);
tmp_interval_mid = copy_intervals (cur_intv, end1, len_mid);
tmp_interval2 = copy_intervals (cur_intv, start2, len2);
Fset_text_properties (make_number (start1), make_number (end2),
Qnil, Qnil);
#endif
if (len1_byte > 20000)
temp = (unsigned char *) xmalloc (len1_byte);
else
temp = (unsigned char *) alloca (len1_byte);
start1_addr = BYTE_POS_ADDR (start1_byte);
start2_addr = BYTE_POS_ADDR (start2_byte);
bcopy (start1_addr, temp, len1_byte);
bcopy (start2_addr, start1_addr, len2_byte);
bcopy (start1_addr + len1_byte, start1_addr + len2_byte, len_mid);
bcopy (temp, start1_addr + len2_byte + len_mid, len1_byte);
if (len1_byte > 20000)
free (temp);
#ifdef USE_TEXT_PROPERTIES
graft_intervals_into_buffer (tmp_interval1, end2 - len1,
len1, current_buffer, 0);
graft_intervals_into_buffer (tmp_interval_mid, start1 + len2,
len_mid, current_buffer, 0);
graft_intervals_into_buffer (tmp_interval2, start1,
len2, current_buffer, 0);
#endif
}
}
if (NILP (leave_markers))
{
transpose_markers (start1, end1, start2, end2,
start1_byte, start1_byte + len1_byte,
start2_byte, start2_byte + len2_byte);
fix_overlays_in_range (start1, end2);
}
return Qnil;
}
void
syms_of_editfns ()
{
environbuf = 0;
Qbuffer_access_fontify_functions
= intern ("buffer-access-fontify-functions");
staticpro (&Qbuffer_access_fontify_functions);
DEFVAR_LISP ("buffer-access-fontify-functions",
&Vbuffer_access_fontify_functions,
"List of functions called by `buffer-substring' to fontify if necessary.\n\
Each function is called with two arguments which specify the range\n\
of the buffer being accessed.");
Vbuffer_access_fontify_functions = Qnil;
{
Lisp_Object obuf;
extern Lisp_Object Vprin1_to_string_buffer;
obuf = Fcurrent_buffer ();
Fset_buffer (Vprin1_to_string_buffer);
Fset (Fmake_local_variable (intern ("buffer-access-fontify-functions")),
Qnil);
Fset_buffer (obuf);
}
DEFVAR_LISP ("buffer-access-fontified-property",
&Vbuffer_access_fontified_property,
"Property which (if non-nil) indicates text has been fontified.\n\
`buffer-substring' need not call the `buffer-access-fontify-functions'\n\
functions if all the text being accessed has this property.");
Vbuffer_access_fontified_property = Qnil;
DEFVAR_LISP ("system-name", &Vsystem_name,
"The name of the machine Emacs is running on.");
DEFVAR_LISP ("user-full-name", &Vuser_full_name,
"The full name of the user logged in.");
DEFVAR_LISP ("user-login-name", &Vuser_login_name,
"The user's name, taken from environment variables if possible.");
DEFVAR_LISP ("user-real-login-name", &Vuser_real_login_name,
"The user's name, based upon the real uid only.");
defsubr (&Schar_equal);
defsubr (&Sgoto_char);
defsubr (&Sstring_to_char);
defsubr (&Schar_to_string);
defsubr (&Sbuffer_substring);
defsubr (&Sbuffer_substring_no_properties);
defsubr (&Sbuffer_string);
defsubr (&Spoint_marker);
defsubr (&Smark_marker);
defsubr (&Spoint);
defsubr (&Sregion_beginning);
defsubr (&Sregion_end);
defsubr (&Sline_beginning_position);
defsubr (&Sline_end_position);
defsubr (&Ssave_excursion);
defsubr (&Ssave_current_buffer);
defsubr (&Sbufsize);
defsubr (&Spoint_max);
defsubr (&Spoint_min);
defsubr (&Spoint_min_marker);
defsubr (&Spoint_max_marker);
defsubr (&Sgap_position);
defsubr (&Sgap_size);
defsubr (&Sposition_bytes);
defsubr (&Sbyte_to_position);
defsubr (&Sbobp);
defsubr (&Seobp);
defsubr (&Sbolp);
defsubr (&Seolp);
defsubr (&Sfollowing_char);
defsubr (&Sprevious_char);
defsubr (&Schar_after);
defsubr (&Schar_before);
defsubr (&Sinsert);
defsubr (&Sinsert_before_markers);
defsubr (&Sinsert_and_inherit);
defsubr (&Sinsert_and_inherit_before_markers);
defsubr (&Sinsert_char);
defsubr (&Suser_login_name);
defsubr (&Suser_real_login_name);
defsubr (&Suser_uid);
defsubr (&Suser_real_uid);
defsubr (&Suser_full_name);
defsubr (&Semacs_pid);
defsubr (&Scurrent_time);
defsubr (&Sformat_time_string);
defsubr (&Sdecode_time);
defsubr (&Sencode_time);
defsubr (&Scurrent_time_string);
defsubr (&Scurrent_time_zone);
defsubr (&Sset_time_zone_rule);
defsubr (&Ssystem_name);
defsubr (&Smessage);
defsubr (&Smessage_box);
defsubr (&Smessage_or_box);
defsubr (&Scurrent_message);
defsubr (&Sformat);
defsubr (&Sinsert_buffer_substring);
defsubr (&Scompare_buffer_substrings);
defsubr (&Ssubst_char_in_region);
defsubr (&Stranslate_region);
defsubr (&Sdelete_region);
defsubr (&Swiden);
defsubr (&Snarrow_to_region);
defsubr (&Ssave_restriction);
defsubr (&Stranspose_regions);
}