/* Basic character support.
-Copyright (C) 2001-2015 Free Software Foundation, Inc.
+Copyright (C) 2001-2016 Free Software Foundation, Inc.
Copyright (C) 1995, 1997, 1998, 2001 Electrotechnical Laboratory, JAPAN.
Licensed to the Free Software Foundation.
Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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
/* At first, see the document in `character.h' to understand the code
in this file. */
-#ifdef emacs
#include <config.h>
-#endif
#include <stdio.h>
-#ifdef emacs
-
#include <sys/types.h>
#include <intprops.h>
#include "lisp.h"
#include "character.h"
#include "buffer.h"
-#include "charset.h"
#include "composite.h"
#include "disptab.h"
-#else /* not emacs */
-
-#include "mulelib.h"
-
-#endif /* emacs */
-
/* Char-table of information about which character to unify to which
Unicode character. Mainly used by the macro MAYBE_UNIFY_CHAR. */
Lisp_Object Vchar_unify_table;
if (CHARACTERP (ch))
{
int w = CHAR_WIDTH (XFASTINT (ch));
- if (INT_ADD_OVERFLOW (width, w))
+ if (INT_ADD_WRAPV (width, w, &width))
string_overflow ();
- width += w;
}
}
}
int c = STRING_CHAR_AND_LENGTH (str + i_byte, bytes);
ptrdiff_t thiswidth = char_width (c, dp);
- if (precision <= 0)
- {
- if (INT_ADD_OVERFLOW (width, thiswidth))
- string_overflow ();
- }
- else if (precision - width < thiswidth)
+ if (0 < precision && precision - width < thiswidth)
{
*nchars = i;
*nbytes = i_byte;
return width;
}
+ if (INT_ADD_WRAPV (thiswidth, width, &width))
+ string_overflow ();
i++;
i_byte += bytes;
- width += thiswidth;
}
if (precision > 0)
thiswidth = char_width (c, dp);
}
- if (precision <= 0)
- {
-#ifdef emacs
- if (INT_ADD_OVERFLOW (width, thiswidth))
- string_overflow ();
-#endif
- }
- else if (precision - width < thiswidth)
+ if (0 < precision && precision - width < thiswidth)
{
*nchars = i;
*nbytes = i_byte;
return width;
}
+ if (INT_ADD_WRAPV (thiswidth, width, &width))
+ string_overflow ();
i += chars;
i_byte += bytes;
- width += thiswidth;
}
if (precision > 0)
for (bytes = 0; str < endp; str++)
{
int n = *str < 0x80 ? 1 : 2;
- if (INT_ADD_OVERFLOW (bytes, n))
+ if (INT_ADD_WRAPV (bytes, n, &bytes))
string_overflow ();
- bytes += n;
}
return bytes;
}
ptrdiff_t nbytes = SBYTES (string);
bool multibyte = STRING_MULTIBYTE (string);
ptrdiff_t byte8_count;
+ ptrdiff_t thrice_byte8_count, uninit_nchars, uninit_nbytes;
const unsigned char *src, *src_end;
unsigned char *dst;
Lisp_Object val;
if (byte8_count == 0)
return string;
+ if (INT_MULTIPLY_WRAPV (byte8_count, 3, &thrice_byte8_count))
+ string_overflow ();
+
if (multibyte)
{
- if ((MOST_POSITIVE_FIXNUM - nchars) / 3 < byte8_count
- || (STRING_BYTES_BOUND - nbytes) / 2 < byte8_count)
- string_overflow ();
-
/* Convert 2-byte sequence of byte8 chars to 4-byte octal. */
- val = make_uninit_multibyte_string (nchars + byte8_count * 3,
- nbytes + byte8_count * 2);
+ if (INT_ADD_WRAPV (nchars, thrice_byte8_count, &uninit_nchars)
+ || INT_ADD_WRAPV (nbytes, 2 * byte8_count, &uninit_nbytes))
+ string_overflow ();
+ val = make_uninit_multibyte_string (uninit_nchars, uninit_nbytes);
}
else
{
- if ((STRING_BYTES_BOUND - nbytes) / 3 < byte8_count)
- string_overflow ();
-
/* Convert 1-byte sequence of byte8 chars to 4-byte octal. */
- val = make_uninit_string (nbytes + byte8_count * 3);
+ if (INT_ADD_WRAPV (thrice_byte8_count, nbytes, &uninit_nbytes))
+ string_overflow ();
+ val = make_uninit_string (uninit_nbytes);
}
src = SDATA (string);
{
c = STRING_CHAR_ADVANCE (src);
c = CHAR_TO_BYTE8 (c);
- dst += sprintf ((char *) dst, "\\%03o", c);
+ dst += sprintf ((char *) dst, "\\%03o", c + 0u);
}
else
while (len--) *dst++ = *src++;
{
c = *src++;
if (c >= 0x80)
- dst += sprintf ((char *) dst, "\\%03o", c);
+ dst += sprintf ((char *) dst, "\\%03o", c + 0u);
else
*dst++ = c;
}
return make_number (c);
}
-#ifdef emacs
-
-/* Return 'true' if C is an alphabetic character as defined by its
- Unicode properties. */
+/* Return true if C is an alphabetic character. */
bool
alphabeticp (int c)
{
|| gen_cat == UNICODE_CATEGORY_Nl);
}
-/* Return 'true' if C is an decimal-number character as defined by its
- Unicode properties. */
+/* Return true if C is a decimal-number character. */
bool
decimalnump (int c)
{
return gen_cat == UNICODE_CATEGORY_Nd;
}
+/* Return true if C is a graphic character. */
+bool
+graphicp (int c)
+{
+ Lisp_Object category = CHAR_TABLE_REF (Vunicode_category_table, c);
+ if (! INTEGERP (category))
+ return false;
+ EMACS_INT gen_cat = XINT (category);
+
+ /* See UTS #18. */
+ return (!(gen_cat == UNICODE_CATEGORY_Zs /* space separator */
+ || gen_cat == UNICODE_CATEGORY_Zl /* line separator */
+ || gen_cat == UNICODE_CATEGORY_Zp /* paragraph separator */
+ || gen_cat == UNICODE_CATEGORY_Cc /* control */
+ || gen_cat == UNICODE_CATEGORY_Cs /* surrogate */
+ || gen_cat == UNICODE_CATEGORY_Cn)); /* unassigned */
+}
+
+/* Return true if C is a printable character. */
+bool
+printablep (int c)
+{
+ Lisp_Object category = CHAR_TABLE_REF (Vunicode_category_table, c);
+ if (! INTEGERP (category))
+ return false;
+ EMACS_INT gen_cat = XINT (category);
+
+ /* See UTS #18. */
+ return (!(gen_cat == UNICODE_CATEGORY_Cc /* control */
+ || gen_cat == UNICODE_CATEGORY_Cs /* surrogate */
+ || gen_cat == UNICODE_CATEGORY_Cn)); /* unassigned */
+}
+
void
syms_of_character (void)
{
/* The correct char-table is setup in characters.el. */
Vunicode_category_table = Qnil;
}
-
-#endif /* emacs */