-/* Lisp functions pertaining to editing.
+/* Lisp functions pertaining to editing. -*- coding: utf-8 -*-
-Copyright (C) 1985-1987, 1989, 1993-2015 Free Software Foundation, Inc.
+Copyright (C) 1985-1987, 1989, 1993-2016 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
#include <strftime.h>
#include <verify.h>
+#include "composite.h"
#include "intervals.h"
#include "character.h"
#include "buffer.h"
#include "coding.h"
-#include "frame.h"
#include "window.h"
#include "blockinput.h"
error ("Specified time is not representable");
}
-static void
+static _Noreturn void
invalid_time (void)
{
error ("Invalid time specification");
Lisp_Object high, low, usec, psec;
struct lisp_time t;
int len = disassemble_lisp_time (specified_time, &high, &low, &usec, &psec);
- int val = len ? decode_time_components (high, low, usec, psec, &t, 0) : 0;
+ if (!len)
+ invalid_time ();
+ int val = decode_time_components (high, low, usec, psec, &t, 0);
check_time_validity (val);
*plen = len;
return t;
doc: /* Return the current time, as a float number of seconds since the epoch.
If SPECIFIED-TIME is given, it is the time to convert to float
instead of the current time. The argument should have the form
-(HIGH LOW) or (HIGH LOW USEC) or (HIGH LOW USEC PSEC). Thus,
+\(HIGH LOW) or (HIGH LOW USEC) or (HIGH LOW USEC PSEC). Thus,
you can use times from `current-time' and from `file-attributes'.
SPECIFIED-TIME can also have the form (HIGH . LOW), but this is
considered obsolete.
doc: /* Use FORMAT-STRING to format the time TIME, or now if omitted.
TIME is specified as (HIGH LOW USEC PSEC), as returned by
`current-time' or `file-attributes'. The obsolete form (HIGH . LOW)
-is also still accepted.
-The optional ZONE is omitted or nil for Emacs local time, t for
-Universal Time, `wall' for system wall clock time, or a string as in
-`set-time-zone-rule' for a time zone rule.
+is also still accepted. The optional ZONE is omitted or nil for Emacs
+local time, t for Universal Time, `wall' for system wall clock time,
+or a string as in the TZ environment variable.
+
The value is a copy of FORMAT-STRING, but with certain constructs replaced
by text that describes the specified date and time in TIME:
current time. The obsolete form (HIGH . LOW) is also still accepted.
The optional ZONE is omitted or nil for Emacs local time, t for
Universal Time, `wall' for system wall clock time, or a string as in
-`set-time-zone-rule' for a time zone rule.
+the TZ environment variable.
The list has the following nine members: SEC is an integer between 0
and 60; SEC is 60 for a leap second, which only some operating systems
This is the reverse operation of `decode-time', which see.
The optional ZONE is omitted or nil for Emacs local time, t for
Universal Time, `wall' for system wall clock time, or a string as in
-`set-time-zone-rule' for a time zone rule. It can also be a list (as
-from `current-time-zone') or an integer (as from `decode-time')
-applied without consideration for daylight saving time.
+the TZ environment variable. It can also be a list (as from
+`current-time-zone') or an integer (as from `decode-time') applied
+without consideration for daylight saving time.
You can pass more than 7 arguments; then the first six arguments
are used as SECOND through YEAR, and the *last* argument is used as ZONE.
The intervening arguments are ignored.
-This feature lets (apply 'encode-time (decode-time ...)) work.
+This feature lets (apply \\='encode-time (decode-time ...)) work.
Out-of-range values for SECOND, MINUTE, HOUR, DAY, or MONTH are allowed;
for example, a DAY of 0 means the day preceding the given month.
The optional ZONE is omitted or nil for Emacs local time, t for
Universal Time, `wall' for system wall clock time, or a string as in
-`set-time-zone-rule' for a time zone rule. */)
+the TZ environment variable. */)
(Lisp_Object specified_time, Lisp_Object zone)
{
time_t value = lisp_seconds_argument (specified_time);
NAME is a string giving the name of the time zone.
If SPECIFIED-TIME is given, the time zone offset is determined from it
instead of using the current time. The argument should have the form
-(HIGH LOW . IGNORED). Thus, you can use times obtained from
+\(HIGH LOW . IGNORED). Thus, you can use times obtained from
`current-time' and from `file-attributes'. SPECIFIED-TIME can also
have the form (HIGH . LOW), but this is considered obsolete.
Optional second arg ZONE is omitted or nil for the local time zone, or
-a string as in `set-time-zone-rule'.
+a string as in the TZ environment variable.
Some operating systems cannot provide all this information to Emacs;
in this case, `current-time-zone' returns a list containing nil for
DEFUN ("set-time-zone-rule", Fset_time_zone_rule, Sset_time_zone_rule, 1, 1, 0,
doc: /* Set the Emacs local time zone using TZ, a string specifying a time zone rule.
-If TZ is nil or `wall', use system wall clock time. If TZ is t, use
-Universal Time. If TZ is an integer, treat it as in `encode-time'.
+
+If TZ is nil or `wall', use system wall clock time; this differs from
+the usual Emacs convention where nil means current local time. If TZ
+is t, use Universal Time. If TZ is an integer, treat it as in
+`encode-time'.
Instead of calling this function, you typically want something else.
To temporarily use a different time zone rule for just one invocation
The first argument is a format control string.
The other arguments are substituted into it to make the result, a string.
-This acts like ‘format’, except it also replaces each left single
+This acts like `format', except it also replaces each left single
quotation mark (\\=‘) and grave accent (\\=`) by a left quote, and each
right single quotation mark (\\=’) and apostrophe (\\=') by a right quote.
The left and right quote replacement characters are specified by
-‘text-quoting-style’.
+`text-quoting-style'.
usage: (format-message STRING &rest OBJECTS) */)
(ptrdiff_t nargs, Lisp_Object *args)
ptrdiff_t max_bufsize = STRING_BYTES_BOUND + 1;
char *p;
ptrdiff_t buf_save_value_index IF_LINT (= 0);
- char *format, *end, *format_start;
- ptrdiff_t formatlen, nchars;
- /* True if the format is multibyte. */
- bool multibyte_format = 0;
- /* True if the output should be a multibyte string,
- which is true if any of the inputs is one. */
- bool multibyte = 0;
+ char *format, *end;
+ ptrdiff_t nchars;
/* When we make a multibyte string, we must pay attention to the
byte combining problem, i.e., a byte may be combined with a
multibyte character of the previous string. This flag tells if we
must consider such a situation or not. */
bool maybe_combine_byte;
- Lisp_Object val;
- bool arg_intervals = 0;
+ bool arg_intervals = false;
USE_SAFE_ALLOCA;
- /* discarded[I] is 1 if byte I of the format
- string was not copied into the output.
- It is 2 if byte I was not the first byte of its character. */
- char *discarded;
-
/* Each element records, for one argument,
the start and end bytepos in the output string,
whether the argument has been converted to string (e.g., due to "%S"),
- and whether the argument is a string with intervals.
- info[0] is unused. Unused elements have -1 for start. */
+ and whether the argument is a string with intervals. */
struct info
{
ptrdiff_t start, end;
bool_bf converted_to_string : 1;
bool_bf intervals : 1;
- } *info = 0;
+ } *info;
CHECK_STRING (args[0]);
- format_start = SSDATA (args[0]);
- formatlen = SBYTES (args[0]);
+ char *format_start = SSDATA (args[0]);
+ ptrdiff_t formatlen = SBYTES (args[0]);
/* Allocate the info and discarded tables. */
- {
- ptrdiff_t i;
- if ((SIZE_MAX - formatlen) / sizeof (struct info) <= nargs)
- memory_full (SIZE_MAX);
- info = SAFE_ALLOCA ((nargs + 1) * sizeof *info + formatlen);
- discarded = (char *) &info[nargs + 1];
- for (i = 0; i < nargs + 1; i++)
- {
- info[i].start = -1;
- info[i].intervals = info[i].converted_to_string = 0;
- }
- memset (discarded, 0, formatlen);
- }
+ ptrdiff_t alloca_size;
+ if (INT_MULTIPLY_WRAPV (nargs, sizeof *info, &alloca_size)
+ || INT_ADD_WRAPV (sizeof *info, alloca_size, &alloca_size)
+ || INT_ADD_WRAPV (formatlen, alloca_size, &alloca_size)
+ || SIZE_MAX < alloca_size)
+ memory_full (SIZE_MAX);
+ /* info[0] is unused. Unused elements have -1 for start. */
+ info = SAFE_ALLOCA (alloca_size);
+ memset (info, 0, alloca_size);
+ for (ptrdiff_t i = 0; i < nargs + 1; i++)
+ info[i].start = -1;
+ /* discarded[I] is 1 if byte I of the format
+ string was not copied into the output.
+ It is 2 if byte I was not the first byte of its character. */
+ char *discarded = (char *) &info[nargs + 1];
/* Try to determine whether the result should be multibyte.
This is not always right; sometimes the result needs to be multibyte
because of an object that we will pass through prin1.
or because a grave accent or apostrophe is requoted,
and in that case, we won't know it here. */
- multibyte_format = STRING_MULTIBYTE (args[0]);
- multibyte = multibyte_format;
- for (n = 1; !multibyte && n < nargs; n++)
- if (STRINGP (args[n]) && STRING_MULTIBYTE (args[n]))
- multibyte = 1;
+
+ /* True if the format is multibyte. */
+ bool multibyte_format = STRING_MULTIBYTE (args[0]);
+ /* True if the output should be a multibyte string,
+ which is true if any of the inputs is one. */
+ bool multibyte = multibyte_format;
+ for (ptrdiff_t i = 1; !multibyte && i < nargs; i++)
+ if (STRINGP (args[i]) && STRING_MULTIBYTE (args[i]))
+ multibyte = true;
int quoting_style = message ? text_quoting_style () : -1;
/* Scan the format and store result in BUF. */
format = format_start;
end = format + formatlen;
- maybe_combine_byte = 0;
+ maybe_combine_byte = false;
while (format != end)
{
bool space_flag = false;
bool sharp_flag = false;
bool zero_flag = false;
- ptrdiff_t field_width;
- bool precision_given;
- uintmax_t precision = UINTMAX_MAX;
- char *num_end;
- char conversion;
for (; ; format++)
{
space_flag &= ~ plus_flag;
zero_flag &= ~ minus_flag;
- {
- uintmax_t w = strtoumax (format, &num_end, 10);
- if (max_bufsize <= w)
- string_overflow ();
- field_width = w;
- }
- precision_given = *num_end == '.';
- if (precision_given)
- precision = strtoumax (num_end + 1, &num_end, 10);
+ char *num_end;
+ uintmax_t raw_field_width = strtoumax (format, &num_end, 10);
+ if (max_bufsize <= raw_field_width)
+ string_overflow ();
+ ptrdiff_t field_width = raw_field_width;
+
+ bool precision_given = *num_end == '.';
+ uintmax_t precision = (precision_given
+ ? strtoumax (num_end + 1, &num_end, 10)
+ : UINTMAX_MAX);
format = num_end;
if (format == end)
error ("Format string ends in middle of format specifier");
- memset (&discarded[format0 - format_start], 1, format - format0);
- conversion = *format;
+ char conversion = *format++;
+ memset (&discarded[format0 - format_start], 1,
+ format - format0 - (conversion == '%'));
if (conversion == '%')
- {
- format++;
- goto copy_char;
- }
- discarded[format - format_start] = 1;
- format++;
+ goto copy_char;
++n;
if (! (n < nargs))
{
Lisp_Object noescape = conversion == 'S' ? Qnil : Qt;
args[n] = Fprin1_to_string (args[n], noescape);
- info[n].converted_to_string = 1;
+ info[n].converted_to_string = true;
if (STRING_MULTIBYTE (args[n]) && ! multibyte)
{
- multibyte = 1;
+ multibyte = true;
goto retry;
}
}
{
if (!multibyte)
{
- multibyte = 1;
+ multibyte = true;
goto retry;
}
args[n] = Fchar_to_string (args[n]);
- info[n].converted_to_string = 1;
+ info[n].converted_to_string = true;
}
if (info[n].converted_to_string)
conversion = 's';
- zero_flag = 0;
+ zero_flag = false;
}
if (SYMBOLP (args[n]))
args[n] = SYMBOL_NAME (args[n]);
if (STRING_MULTIBYTE (args[n]) && ! multibyte)
{
- multibyte = 1;
+ multibyte = true;
goto retry;
}
}
{
/* handle case (precision[n] >= 0) */
- ptrdiff_t width, padding, nbytes;
- ptrdiff_t nchars_string;
-
ptrdiff_t prec = -1;
if (precision_given && precision <= TYPE_MAXIMUM (ptrdiff_t))
prec = precision;
lisp_string_width is the right thing, and will be
done, but meanwhile we work with it. */
+ ptrdiff_t width, nbytes;
+ ptrdiff_t nchars_string;
if (prec == 0)
width = nchars_string = nbytes = 0;
else
if (convbytes && multibyte && ! STRING_MULTIBYTE (args[n]))
convbytes = count_size_as_multibyte (SDATA (args[n]), nbytes);
- padding = width < field_width ? field_width - width : 0;
+ ptrdiff_t padding
+ = width < field_width ? field_width - width : 0;
if (max_bufsize - padding <= convbytes)
string_overflow ();
&& !ASCII_CHAR_P (*((unsigned char *) p - 1))
&& STRING_MULTIBYTE (args[n])
&& !CHAR_HEAD_P (SREF (args[n], 0)))
- maybe_combine_byte = 1;
+ maybe_combine_byte = true;
p += copy_text (SDATA (args[n]), (unsigned char *) p,
nbytes,
/* If this argument has text properties, record where
in the result string it appears. */
if (string_intervals (args[n]))
- info[n].intervals = arg_intervals = 1;
+ info[n].intervals = arg_intervals = true;
continue;
}
|| conversion == 'X'))
error ("Invalid format operation %%%c",
STRING_CHAR ((unsigned char *) format - 1));
- else if (! (INTEGERP (args[n]) || FLOATP (args[n])))
+ else if (! NUMBERP (args[n]))
error ("Format specifier doesn't match argument type");
else
{
};
verify (USEFUL_PRECISION_MAX > 0);
- int prec;
- ptrdiff_t padding, sprintf_bytes;
- uintmax_t excess_precision, numwidth;
- uintmax_t leading_zeros = 0, trailing_zeros = 0;
-
- char sprintf_buf[SPRINTF_BUFSIZE];
-
- /* Copy of conversion specification, modified somewhat.
- At most three flags F can be specified at once. */
- char convspec[sizeof "%FFF.*d" + pMlen];
-
/* Avoid undefined behavior in underlying sprintf. */
if (conversion == 'd' || conversion == 'i')
- sharp_flag = 0;
+ sharp_flag = false;
/* Create the copy of the conversion specification, with
any width and precision removed, with ".*" inserted,
- and with pM inserted for integer formats. */
+ and with pM inserted for integer formats.
+ At most three flags F can be specified at once. */
+ char convspec[sizeof "%FFF.*d" + pMlen];
{
char *f = convspec;
*f++ = '%';
*f = '\0';
}
- prec = -1;
+ int prec = -1;
if (precision_given)
prec = min (precision, USEFUL_PRECISION_MAX);
careful about integer overflow, NaNs, infinities, and
conversions; for example, the min and max macros are
not suitable here. */
+ char sprintf_buf[SPRINTF_BUFSIZE];
+ ptrdiff_t sprintf_bytes;
if (conversion == 'e' || conversion == 'f' || conversion == 'g')
{
double x = (INTEGERP (args[n])
padding and excess precision. Deal with excess precision
first. This happens only when the format specifies
ridiculously large precision. */
- excess_precision = precision - prec;
+ uintmax_t excess_precision = precision - prec;
+ uintmax_t leading_zeros = 0, trailing_zeros = 0;
if (excess_precision)
{
if (conversion == 'e' || conversion == 'f'
/* Compute the total bytes needed for this item, including
excess precision and padding. */
- numwidth = sprintf_bytes + excess_precision;
- padding = numwidth < field_width ? field_width - numwidth : 0;
+ uintmax_t numwidth = sprintf_bytes + excess_precision;
+ ptrdiff_t padding
+ = numwidth < field_width ? field_width - numwidth : 0;
if (max_bufsize - sprintf_bytes <= excess_precision
|| max_bufsize - padding <= numwidth)
string_overflow ();
char src0 = src[0];
int exponent_bytes = 0;
bool signedp = src0 == '-' || src0 == '+' || src0 == ' ';
- int significand_bytes;
if (zero_flag
&& ((src[signedp] >= '0' && src[signedp] <= '9')
|| (src[signedp] >= 'a' && src[signedp] <= 'f')
p += signedp;
memset (p, '0', leading_zeros);
p += leading_zeros;
- significand_bytes = sprintf_bytes - signedp - exponent_bytes;
+ int significand_bytes
+ = sprintf_bytes - signedp - exponent_bytes;
memcpy (p, src, significand_bytes);
p += significand_bytes;
src += significand_bytes;
if (p > buf
&& !ASCII_CHAR_P (*((unsigned char *) p - 1))
&& !CHAR_HEAD_P (format_char))
- maybe_combine_byte = 1;
+ maybe_combine_byte = true;
while (! CHAR_HEAD_P (*format))
format++;
/* There wasn't enough room to store this conversion or single
character. CONVBYTES says how much room is needed. Allocate
enough room (and then some) and do it again. */
- {
- ptrdiff_t used = p - buf;
- if (max_bufsize - used < convbytes)
- string_overflow ();
- bufsize = used + convbytes;
- bufsize = bufsize < max_bufsize / 2 ? bufsize * 2 : max_bufsize;
+ ptrdiff_t used = p - buf;
+ if (max_bufsize - used < convbytes)
+ string_overflow ();
+ bufsize = used + convbytes;
+ bufsize = bufsize < max_bufsize / 2 ? bufsize * 2 : max_bufsize;
- if (buf == initial_buffer)
- {
- buf = xmalloc (bufsize);
- sa_must_free = true;
- buf_save_value_index = SPECPDL_INDEX ();
- record_unwind_protect_ptr (xfree, buf);
- memcpy (buf, initial_buffer, used);
- }
- else
- {
- buf = xrealloc (buf, bufsize);
- set_unwind_protect_ptr (buf_save_value_index, xfree, buf);
- }
-
- p = buf + used;
- }
+ if (buf == initial_buffer)
+ {
+ buf = xmalloc (bufsize);
+ sa_must_free = true;
+ buf_save_value_index = SPECPDL_INDEX ();
+ record_unwind_protect_ptr (xfree, buf);
+ memcpy (buf, initial_buffer, used);
+ }
+ else
+ {
+ buf = xrealloc (buf, bufsize);
+ set_unwind_protect_ptr (buf_save_value_index, xfree, buf);
+ }
+ p = buf + used;
format = format0;
n = n0;
}
if (maybe_combine_byte)
nchars = multibyte_chars_in_text ((unsigned char *) buf, p - buf);
- val = make_specified_string (buf, nchars, p - buf, multibyte);
+ Lisp_Object val = make_specified_string (buf, nchars, p - buf, multibyte);
/* If the format string has text properties, or any of the string
arguments has text properties, set up text properties of the
if (string_intervals (args[0]) || arg_intervals)
{
- Lisp_Object len, new_len, props;
-
/* Add text properties from the format string. */
- len = make_number (SCHARS (args[0]));
- props = text_property_list (args[0], make_number (0), len, Qnil);
-
+ Lisp_Object len = make_number (SCHARS (args[0]));
+ Lisp_Object props = text_property_list (args[0], make_number (0),
+ len, Qnil);
if (CONSP (props))
{
ptrdiff_t bytepos = 0, position = 0, translated = 0;
ptrdiff_t argn = 1;
- Lisp_Object list;
/* Adjust the bounds of each text property
to the proper start and end in the output string. */
POSITION is the untranslated char position in it,
TRANSLATED is the translated char position in BUF,
and ARGN is the number of the next arg we will come to. */
- for (list = props; CONSP (list); list = XCDR (list))
+ for (Lisp_Object list = props; CONSP (list); list = XCDR (list))
{
- Lisp_Object item;
- ptrdiff_t pos;
-
- item = XCAR (list);
+ Lisp_Object item = XCAR (list);
/* First adjust the property start position. */
- pos = XINT (XCAR (item));
+ ptrdiff_t pos = XINT (XCAR (item));
/* Advance BYTEPOS, POSITION, TRANSLATED and ARGN
up to this position. */
/* Add text properties from arguments. */
if (arg_intervals)
- for (n = 1; n < nargs; ++n)
- if (info[n].intervals)
+ for (ptrdiff_t i = 1; i < nargs; i++)
+ if (info[i].intervals)
{
- len = make_number (SCHARS (args[n]));
- new_len = make_number (info[n].end - info[n].start);
- props = text_property_list (args[n], make_number (0), len, Qnil);
+ len = make_number (SCHARS (args[i]));
+ Lisp_Object new_len = make_number (info[i].end - info[i].start);
+ props = text_property_list (args[i], make_number (0), len, Qnil);
props = extend_property_ranges (props, new_len);
/* If successive arguments have properties, be sure that
the value of `composition' property be the copy. */
- if (n > 1 && info[n - 1].end)
+ if (1 < i && info[i - 1].end)
make_composition_value_copy (props);
add_text_properties_from_list (val, props,
- make_number (info[n].start));
+ make_number (info[i].start));
}
}