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Unified Diff: bison/src/bison/2.4.1/bison-2.4.1-src/lib/mbswidth.c

Issue 10807020: Add native Windows binary for bison. (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/
Patch Set: Created 8 years, 5 months ago
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Index: bison/src/bison/2.4.1/bison-2.4.1-src/lib/mbswidth.c
===================================================================
--- bison/src/bison/2.4.1/bison-2.4.1-src/lib/mbswidth.c (revision 0)
+++ bison/src/bison/2.4.1/bison-2.4.1-src/lib/mbswidth.c (revision 0)
@@ -0,0 +1,175 @@
+/* Determine the number of screen columns needed for a string.
+ Copyright (C) 2000-2007 Free Software Foundation, Inc.
+
+ This program 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.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <haible@clisp.cons.org>. */
+
+#include <config.h>
+
+/* Specification. */
+#include "mbswidth.h"
+
+/* Get MB_CUR_MAX. */
+#include <stdlib.h>
+
+#include <string.h>
+
+/* Get isprint(). */
+#include <ctype.h>
+
+/* Get mbstate_t, mbrtowc(), mbsinit(), wcwidth(). */
+#include <wchar.h>
+
+/* Get iswcntrl(). */
+#include <wctype.h>
+
+#ifndef mbsinit
+# if !HAVE_MBSINIT
+# define mbsinit(ps) 1
+# endif
+#endif
+
+/* Returns the number of columns needed to represent the multibyte
+ character string pointed to by STRING. If a non-printable character
+ occurs, and MBSW_REJECT_UNPRINTABLE is specified, -1 is returned.
+ With flags = MBSW_REJECT_INVALID | MBSW_REJECT_UNPRINTABLE, this is
+ the multibyte analogue of the wcswidth function.
+ If STRING is not of length < INT_MAX / 2, integer overflow can occur. */
+int
+mbswidth (const char *string, int flags)
+{
+ return mbsnwidth (string, strlen (string), flags);
+}
+
+/* Returns the number of columns needed to represent the multibyte
+ character string pointed to by STRING of length NBYTES. If a
+ non-printable character occurs, and MBSW_REJECT_UNPRINTABLE is
+ specified, -1 is returned.
+ If NBYTES is not < INT_MAX / 2, integer overflow can occur. */
+int
+mbsnwidth (const char *string, size_t nbytes, int flags)
+{
+ const char *p = string;
+ const char *plimit = p + nbytes;
+ int width;
+
+ width = 0;
+#if HAVE_MBRTOWC
+ if (MB_CUR_MAX > 1)
+ {
+ while (p < plimit)
+ switch (*p)
+ {
+ case ' ': case '!': case '"': case '#': case '%':
+ case '&': case '\'': case '(': case ')': case '*':
+ case '+': case ',': case '-': case '.': case '/':
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ case ':': case ';': case '<': case '=': case '>':
+ case '?':
+ case 'A': case 'B': case 'C': case 'D': case 'E':
+ case 'F': case 'G': case 'H': case 'I': case 'J':
+ case 'K': case 'L': case 'M': case 'N': case 'O':
+ case 'P': case 'Q': case 'R': case 'S': case 'T':
+ case 'U': case 'V': case 'W': case 'X': case 'Y':
+ case 'Z':
+ case '[': case '\\': case ']': case '^': case '_':
+ case 'a': case 'b': case 'c': case 'd': case 'e':
+ case 'f': case 'g': case 'h': case 'i': case 'j':
+ case 'k': case 'l': case 'm': case 'n': case 'o':
+ case 'p': case 'q': case 'r': case 's': case 't':
+ case 'u': case 'v': case 'w': case 'x': case 'y':
+ case 'z': case '{': case '|': case '}': case '~':
+ /* These characters are printable ASCII characters. */
+ p++;
+ width++;
+ break;
+ default:
+ /* If we have a multibyte sequence, scan it up to its end. */
+ {
+ mbstate_t mbstate;
+ memset (&mbstate, 0, sizeof mbstate);
+ do
+ {
+ wchar_t wc;
+ size_t bytes;
+ int w;
+
+ bytes = mbrtowc (&wc, p, plimit - p, &mbstate);
+
+ if (bytes == (size_t) -1)
+ /* An invalid multibyte sequence was encountered. */
+ {
+ if (!(flags & MBSW_REJECT_INVALID))
+ {
+ p++;
+ width++;
+ break;
+ }
+ else
+ return -1;
+ }
+
+ if (bytes == (size_t) -2)
+ /* An incomplete multibyte character at the end. */
+ {
+ if (!(flags & MBSW_REJECT_INVALID))
+ {
+ p = plimit;
+ width++;
+ break;
+ }
+ else
+ return -1;
+ }
+
+ if (bytes == 0)
+ /* A null wide character was encountered. */
+ bytes = 1;
+
+ w = wcwidth (wc);
+ if (w >= 0)
+ /* A printable multibyte character. */
+ width += w;
+ else
+ /* An unprintable multibyte character. */
+ if (!(flags & MBSW_REJECT_UNPRINTABLE))
+ width += (iswcntrl (wc) ? 0 : 1);
+ else
+ return -1;
+
+ p += bytes;
+ }
+ while (! mbsinit (&mbstate));
+ }
+ break;
+ }
+ return width;
+ }
+#endif
+
+ while (p < plimit)
+ {
+ unsigned char c = (unsigned char) *p++;
+
+ if (isprint (c))
+ width++;
+ else if (!(flags & MBSW_REJECT_UNPRINTABLE))
+ width += (iscntrl (c) ? 0 : 1);
+ else
+ return -1;
+ }
+ return width;
+}
Property changes on: bison\src\bison\2.4.1\bison-2.4.1-src\lib\mbswidth.c
___________________________________________________________________
Added: svn:eol-style
+ LF
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