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Diffstat (limited to 'lib/unistr/u8-mbtouc-unsafe.c')
-rw-r--r--lib/unistr/u8-mbtouc-unsafe.c182
1 files changed, 45 insertions, 137 deletions
diff --git a/lib/unistr/u8-mbtouc-unsafe.c b/lib/unistr/u8-mbtouc-unsafe.c
index 01d12dc..41583f9 100644
--- a/lib/unistr/u8-mbtouc-unsafe.c
+++ b/lib/unistr/u8-mbtouc-unsafe.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
@@ -52,15 +52,13 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
| (unsigned int) (s[1] ^ 0x80);
return 2;
}
-#if CONFIG_UNICODE_SAFETY
/* invalid multibyte character */
-#endif
}
else
{
/* incomplete multibyte character */
*puc = 0xfffd;
- return 1;
+ return n;
}
}
else if (c < 0xf0)
@@ -68,39 +66,23 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
if (n >= 3)
{
#if CONFIG_UNICODE_SAFETY
- if ((s[1] ^ 0x80) < 0x40)
- {
- if ((s[2] ^ 0x80) < 0x40)
- {
- if ((c >= 0xe1 || s[1] >= 0xa0)
- && (c != 0xed || s[1] < 0xa0))
+ if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (c >= 0xe1 || s[1] >= 0xa0)
+ && (c != 0xed || s[1] < 0xa0))
#endif
- {
- *puc = ((unsigned int) (c & 0x0f) << 12)
- | ((unsigned int) (s[1] ^ 0x80) << 6)
- | (unsigned int) (s[2] ^ 0x80);
- return 3;
- }
-#if CONFIG_UNICODE_SAFETY
- /* 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 */
-#endif
}
else
{
/* incomplete multibyte character */
*puc = 0xfffd;
- if (n == 1 || (s[1] ^ 0x80) >= 0x40)
- return 1;
- else
- return 2;
+ return n;
}
}
else if (c < 0xf8)
@@ -108,51 +90,28 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
if (n >= 4)
{
#if CONFIG_UNICODE_SAFETY
- 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
- )
+ )
#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;
- }
-#if CONFIG_UNICODE_SAFETY
- /* 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 */
-#endif
}
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;
+ return n;
}
}
#if 0
@@ -161,42 +120,19 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
if (n >= 5)
{
#if CONFIG_UNICODE_SAFETY
- 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)
+ if ((s[1] ^ 0x80) < 0x40 && (s[2] ^ 0x80) < 0x40
+ && (s[3] ^ 0x80) < 0x40 && (s[4] ^ 0x80) < 0x40
+ && (c >= 0xf9 || s[1] >= 0x88))
#endif
- {
- *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;
- }
-#if CONFIG_UNICODE_SAFETY
- /* 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 */
-#endif
}
else
{
@@ -210,49 +146,21 @@ u8_mbtouc_unsafe (ucs4_t *puc, const uint8_t *s, size_t n)
if (n >= 6)
{
#if CONFIG_UNICODE_SAFETY
- 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)
+ 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))
#endif
- {
- *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;
- }
-#if CONFIG_UNICODE_SAFETY
- /* 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 */
-#endif
}
else
{
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-29 00:00:08 +0000