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authorManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:28:30 +0100
committerManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:28:30 +0100
commita9a31b1de5776a3b08a82101a4fa711294f0dd1d (patch)
tree159134a624e51509f40ed8823249f09a70d1dda3 /lib/unistr/u8-mbtouc.c
parent5f2b09982312c98863eb9a8dfe2c608b81f58259 (diff)
Imported Upstream version 0.9.6+really0.9.3upstream/0.9.6+really0.9.3
Diffstat (limited to 'lib/unistr/u8-mbtouc.c')
-rw-r--r--lib/unistr/u8-mbtouc.c166
1 files changed, 42 insertions, 124 deletions
diff --git a/lib/unistr/u8-mbtouc.c b/lib/unistr/u8-mbtouc.c
index dc4607f6..96cd5b74 100644
--- a/lib/unistr/u8-mbtouc.c
+++ b/lib/unistr/u8-mbtouc.c
@@ -1,5 +1,5 @@
/* Look at first character in UTF-8 string.
- Copyright (C) 1999-2002, 2006-2007, 2009-2015 Free Software Foundation, Inc.
+ Copyright (C) 1999-2002, 2006-2007, 2009-2010 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
@@ -55,32 +55,21 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
{
/* incomplete multibyte character */
*puc = 0xfffd;
- return 1;
+ return n;
}
}
else if (c < 0xf0)
{
if (n >= 3)
{
- if ((s[1] ^ 0x80) < 0x40)
+ if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (c >= 0xe1 || s[1] >= 0xa0)
+ && (c != 0xed || s[1] < 0xa0))
{
- 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;
+ *puc = ((unsigned int) (c & 0x0f) << 12)
+ | ((unsigned int) (s[1] ^ 0x80) << 6)
+ | (unsigned int) (s[2] ^ 0x80);
+ return 3;
}
/* invalid multibyte character */
}
@@ -88,45 +77,26 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
{
/* incomplete multibyte character */
*puc = 0xfffd;
- if (n == 1 || (s[1] ^ 0x80) >= 0x40)
- return 1;
- else
- return 2;
+ return n;
}
}
else if (c < 0xf8)
{
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 ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40
+ && (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 */
- *puc = 0xfffd;
- return 4;
- }
- /* invalid multibyte character */
- *puc = 0xfffd;
- return 3;
- }
- /* invalid multibyte character */
- *puc = 0xfffd;
- return 2;
+ )
+ {
+ *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 */
}
@@ -134,12 +104,7 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
{
/* 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;
+ return n;
}
}
#if 0
@@ -147,37 +112,16 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
{
if (n >= 5)
{
- if ((s[1] ^ 0x80) < 0x40)
+ if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
+ && (c >= 0xf9 || s[1] >= 0x88))
{
- 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;
+ *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 */
}
@@ -192,44 +136,18 @@ u8_mbtouc (ucs4_t *puc, const uint8_t *s, size_t n)
{
if (n >= 6)
{
- if ((s[1] ^ 0x80) < 0x40)
+ 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))
{
- 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;
+ *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 */
}