+++ /dev/null
-/* This file is based on the GLIB utf8 validation functions. The
- * original license text follows. */
-
-/* gutf8.c - Operations on UTF-8 strings.
- *
- * Copyright (C) 1999 Tom Tromey
- * Copyright (C) 2000 Red Hat, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <stdlib.h>
-
-#include "utf8.h"
-
-#define UNICODE_VALID(Char) \
- ((Char) < 0x110000 && \
- (((Char) & 0xFFFFF800) != 0xD800) && \
- ((Char) < 0xFDD0 || (Char) > 0xFDEF) && \
- ((Char) & 0xFFFE) != 0xFFFE)
-
-
-#define CONTINUATION_CHAR \
- do { \
- if ((*(const unsigned char *)p & 0xc0) != 0x80) /* 10xxxxxx */ \
- goto error; \
- val <<= 6; \
- val |= (*(const unsigned char *)p) & 0x3f; \
- } while(0)
-
-
-const char *
-avahi_utf8_valid (const char *str)
-
-{
- unsigned val = 0;
- unsigned min = 0;
- const char *p;
-
- for (p = str; *p; p++)
- {
- if (*(const unsigned char *)p < 128)
- /* done */;
- else
- {
- if ((*(const unsigned char *)p & 0xe0) == 0xc0) /* 110xxxxx */
- {
- if ( ((*(const unsigned char *)p & 0x1e) == 0))
- goto error;
- p++;
- if ( ((*(const unsigned char *)p & 0xc0) != 0x80)) /* 10xxxxxx */
- goto error;
- }
- else
- {
- if ((*(const unsigned char *)p & 0xf0) == 0xe0) /* 1110xxxx */
- {
- min = (1 << 11);
- val = *(const unsigned char *)p & 0x0f;
- goto TWO_REMAINING;
- }
- else if ((*(const unsigned char *)p & 0xf8) == 0xf0) /* 11110xxx */
- {
- min = (1 << 16);
- val = *(const unsigned char *)p & 0x07;
- }
- else
- goto error;
-
- p++;
- CONTINUATION_CHAR;
- TWO_REMAINING:
- p++;
- CONTINUATION_CHAR;
- p++;
- CONTINUATION_CHAR;
-
- if ( (val < min))
- goto error;
-
- if ( (!UNICODE_VALID(val)))
- goto error;
- }
-
- continue;
-
- error:
- return NULL;
- }
- }
-
- return str;
-}