/* Conversion UTF-8 to UCS-4.
- Copyright (C) 2001-2002, 2006-2007, 2009 Free Software Foundation, Inc.
+ Copyright (C) 2001-2002, 2006-2007, 2009-2011 Free Software Foundation, Inc.
Written by Bruno Haible <bruno@clisp.org>, 2001.
This program is free software: you can redistribute it and/or modify it
if (c >= 0xc2)
{
if (c < 0xe0)
- {
- if (n >= 2)
- {
- if ((s[1] ^ 0x80) < 0x40)
- {
- *puc = ((unsigned int) (c & 0x1f) << 6)
- | (unsigned int) (s[1] ^ 0x80);
- return 2;
- }
- /* invalid multibyte character */
- }
- else
- {
- /* incomplete multibyte character */
- *puc = 0xfffd;
- return n;
- }
- }
+ {
+ if (n >= 2)
+ {
+ if ((s[1] ^ 0x80) < 0x40)
+ {
+ *puc = ((unsigned int) (c & 0x1f) << 6)
+ | (unsigned int) (s[1] ^ 0x80);
+ return 2;
+ }
+ /* invalid multibyte character */
+ }
+ else
+ {
+ /* incomplete multibyte character */
+ *puc = 0xfffd;
+ return 1;
+ }
+ }
else if (c < 0xf0)
- {
- if (n >= 3)
- {
- if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
- && (c >= 0xe1 || s[1] >= 0xa0)
- && (c != 0xed || s[1] < 0xa0))
- {
- *puc = ((unsigned int) (c & 0x0f) << 12)
- | ((unsigned int) (s[1] ^ 0x80) << 6)
- | (unsigned int) (s[2] ^ 0x80);
- return 3;
- }
- /* invalid multibyte character */
- }
- else
- {
- /* incomplete multibyte character */
- *puc = 0xfffd;
- return n;
- }
- }
+ {
+ if (n >= 3)
+ {
+ if ((s[1] ^ 0x80) < 0x40)
+ {
+ if ((s[2] ^ 0x80) < 0x40)
+ {
+ if ((c >= 0xe1 || s[1] >= 0xa0)
+ && (c != 0xed || s[1] < 0xa0))
+ {
+ *puc = ((unsigned int) (c & 0x0f) << 12)
+ | ((unsigned int) (s[1] ^ 0x80) << 6)
+ | (unsigned int) (s[2] ^ 0x80);
+ return 3;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 3;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 2;
+ }
+ /* invalid multibyte character */
+ }
+ else
+ {
+ /* incomplete multibyte character */
+ *puc = 0xfffd;
+ if (n == 1 || (s[1] ^ 0x80) >= 0x40)
+ return 1;
+ else
+ return 2;
+ }
+ }
else if (c < 0xf8)
- {
- if (n >= 4)
- {
- if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
- && (s[3] ^ 0x80) < 0x40
- && (c >= 0xf1 || s[1] >= 0x90)
+ {
+ if (n >= 4)
+ {
+ if ((s[1] ^ 0x80) < 0x40)
+ {
+ if ((s[2] ^ 0x80) < 0x40)
+ {
+ if ((s[3] ^ 0x80) < 0x40)
+ {
+ if ((c >= 0xf1 || s[1] >= 0x90)
#if 1
- && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
+ && (c < 0xf4 || (c == 0xf4 && s[1] < 0x90))
#endif
- )
- {
- *puc = ((unsigned int) (c & 0x07) << 18)
- | ((unsigned int) (s[1] ^ 0x80) << 12)
- | ((unsigned int) (s[2] ^ 0x80) << 6)
- | (unsigned int) (s[3] ^ 0x80);
- return 4;
- }
- /* invalid multibyte character */
- }
- else
- {
- /* incomplete multibyte character */
- *puc = 0xfffd;
- return n;
- }
- }
+ )
+ {
+ *puc = ((unsigned int) (c & 0x07) << 18)
+ | ((unsigned int) (s[1] ^ 0x80) << 12)
+ | ((unsigned int) (s[2] ^ 0x80) << 6)
+ | (unsigned int) (s[3] ^ 0x80);
+ return 4;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 4;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 3;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 2;
+ }
+ /* invalid multibyte character */
+ }
+ else
+ {
+ /* incomplete multibyte character */
+ *puc = 0xfffd;
+ if (n == 1 || (s[1] ^ 0x80) >= 0x40)
+ return 1;
+ else if (n == 2 || (s[2] ^ 0x80) >= 0x40)
+ return 2;
+ else
+ return 3;
+ }
+ }
#if 0
else if (c < 0xfc)
- {
- if (n >= 5)
- {
- if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
- && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
- && (c >= 0xf9 || s[1] >= 0x88))
- {
- *puc = ((unsigned int) (c & 0x03) << 24)
- | ((unsigned int) (s[1] ^ 0x80) << 18)
- | ((unsigned int) (s[2] ^ 0x80) << 12)
- | ((unsigned int) (s[3] ^ 0x80) << 6)
- | (unsigned int) (s[4] ^ 0x80);
- return 5;
- }
- /* invalid multibyte character */
- }
- else
- {
- /* incomplete multibyte character */
- *puc = 0xfffd;
- return n;
- }
- }
+ {
+ if (n >= 5)
+ {
+ if ((s[1] ^ 0x80) < 0x40)
+ {
+ if ((s[2] ^ 0x80) < 0x40)
+ {
+ if ((s[3] ^ 0x80) < 0x40)
+ {
+ if ((s[4] ^ 0x80) < 0x40)
+ {
+ if (c >= 0xf9 || s[1] >= 0x88)
+ {
+ *puc = ((unsigned int) (c & 0x03) << 24)
+ | ((unsigned int) (s[1] ^ 0x80) << 18)
+ | ((unsigned int) (s[2] ^ 0x80) << 12)
+ | ((unsigned int) (s[3] ^ 0x80) << 6)
+ | (unsigned int) (s[4] ^ 0x80);
+ return 5;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 5;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 4;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 3;
+ }
+ /* invalid multibyte character */
+ return 2;
+ }
+ /* invalid multibyte character */
+ }
+ else
+ {
+ /* incomplete multibyte character */
+ *puc = 0xfffd;
+ return n;
+ }
+ }
else if (c < 0xfe)
- {
- if (n >= 6)
- {
- if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
- && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
- && (s[5] ^ 0x80) < 0x40
- && (c >= 0xfd || s[1] >= 0x84))
- {
- *puc = ((unsigned int) (c & 0x01) << 30)
- | ((unsigned int) (s[1] ^ 0x80) << 24)
- | ((unsigned int) (s[2] ^ 0x80) << 18)
- | ((unsigned int) (s[3] ^ 0x80) << 12)
- | ((unsigned int) (s[4] ^ 0x80) << 6)
- | (unsigned int) (s[5] ^ 0x80);
- return 6;
- }
- /* invalid multibyte character */
- }
- else
- {
- /* incomplete multibyte character */
- *puc = 0xfffd;
- return n;
- }
- }
+ {
+ if (n >= 6)
+ {
+ if ((s[1] ^ 0x80) < 0x40)
+ {
+ if ((s[2] ^ 0x80) < 0x40)
+ {
+ if ((s[3] ^ 0x80) < 0x40)
+ {
+ if ((s[4] ^ 0x80) < 0x40)
+ {
+ if ((s[5] ^ 0x80) < 0x40)
+ {
+ if (c >= 0xfd || s[1] >= 0x84)
+ {
+ *puc = ((unsigned int) (c & 0x01) << 30)
+ | ((unsigned int) (s[1] ^ 0x80) << 24)
+ | ((unsigned int) (s[2] ^ 0x80) << 18)
+ | ((unsigned int) (s[3] ^ 0x80) << 12)
+ | ((unsigned int) (s[4] ^ 0x80) << 6)
+ | (unsigned int) (s[5] ^ 0x80);
+ return 6;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 6;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 5;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 4;
+ }
+ /* invalid multibyte character */
+ *puc = 0xfffd;
+ return 3;
+ }
+ /* invalid multibyte character */
+ return 2;
+ }
+ /* invalid multibyte character */
+ }
+ else
+ {
+ /* incomplete multibyte character */
+ *puc = 0xfffd;
+ return n;
+ }
+ }
#endif
}
/* invalid multibyte character */