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libwine: Add helper function to compare character weights. 

Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2019-05-21 17:19:44 +02:00 committed by Alexandre Julliard
parent 1eca63440d
commit ac5ac588f3
1 changed files with 36 additions and 133 deletions
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169
libs/port/sortkey.c
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@ -153,11 +153,37 @@ int wine_get_sortkey(int flags, const WCHAR *src, int srclen, char *dst, int dst
return key_ptr[3] - dst;
}
static inline int compare_unicode_weights(int flags, const WCHAR *str1, int len1,
const WCHAR *str2, int len2)
enum weight
{
UNICODE_WEIGHT,
DIACRITIC_WEIGHT,
CASE_WEIGHT
};
static unsigned int get_weight(WCHAR ch, enum weight type)
{
unsigned int ret;
ret = collation_table[collation_table[ch >> 8] + (ch & 0xff)];
if (ret == (unsigned int)-1)
return ch;
switch(type)
{
case UNICODE_WEIGHT:
return ret >> 16;
case DIACRITIC_WEIGHT:
return (ret >> 8) & 0xff;
case CASE_WEIGHT:
default:
return (ret >> 4) & 0x0f;
}
}
static inline int compare_weights(int flags, const WCHAR *str1, int len1,
const WCHAR *str2, int len2, enum weight type)
{
unsigned int ce1, ce2;
int ret;
/* 32-bit collation element table format:
* unicode weight - high 16 bit, diacritic weight - high 8 bit of low 16 bit,
@ -187,7 +213,7 @@ static inline int compare_unicode_weights(int flags, const WCHAR *str1, int len1
/* hyphen and apostrophe are treated differently depending on
* whether SORT_STRINGSORT specified or not
*/
if (!(flags & SORT_STRINGSORT))
if (type == UNICODE_WEIGHT && !(flags & SORT_STRINGSORT))
{
if (*str1 == '-' || *str1 == '\'')
{
@ -206,133 +232,10 @@ static inline int compare_unicode_weights(int flags, const WCHAR *str1, int len1
}
}
ce1 = collation_table[collation_table[*str1 >> 8] + (*str1 & 0xff)];
ce2 = collation_table[collation_table[*str2 >> 8] + (*str2 & 0xff)];
ce1 = get_weight(*str1, type);
ce2 = get_weight(*str2, type);
if (ce1 != (unsigned int)-1 && ce2 != (unsigned int)-1)
ret = (ce1 >> 16) - (ce2 >> 16);
else
ret = *str1 - *str2;
if (ret) return ret;
str1++;
str2++;
len1--;
len2--;
}
while (len1 && !*str1)
{
str1++;
len1--;
}
while (len2 && !*str2)
{
str2++;
len2--;
}
return len1 - len2;
}
static inline int compare_diacritic_weights(int flags, const WCHAR *str1, int len1,
const WCHAR *str2, int len2)
{
unsigned int ce1, ce2;
int ret;
/* 32-bit collation element table format:
* unicode weight - high 16 bit, diacritic weight - high 8 bit of low 16 bit,
* case weight - high 4 bit of low 8 bit.
*/
while (len1 > 0 && len2 > 0)
{
if (flags & NORM_IGNORESYMBOLS)
{
int skip = 0;
/* FIXME: not tested */
if (get_char_typeW(*str1) & (C1_PUNCT | C1_SPACE))
{
str1++;
len1--;
skip = 1;
}
if (get_char_typeW(*str2) & (C1_PUNCT | C1_SPACE))
{
str2++;
len2--;
skip = 1;
}
if (skip) continue;
}
ce1 = collation_table[collation_table[*str1 >> 8] + (*str1 & 0xff)];
ce2 = collation_table[collation_table[*str2 >> 8] + (*str2 & 0xff)];
if (ce1 != (unsigned int)-1 && ce2 != (unsigned int)-1)
ret = ((ce1 >> 8) & 0xff) - ((ce2 >> 8) & 0xff);
else
ret = *str1 - *str2;
if (ret) return ret;
str1++;
str2++;
len1--;
len2--;
}
while (len1 && !*str1)
{
str1++;
len1--;
}
while (len2 && !*str2)
{
str2++;
len2--;
}
return len1 - len2;
}
static inline int compare_case_weights(int flags, const WCHAR *str1, int len1,
const WCHAR *str2, int len2)
{
unsigned int ce1, ce2;
int ret;
/* 32-bit collation element table format:
* unicode weight - high 16 bit, diacritic weight - high 8 bit of low 16 bit,
* case weight - high 4 bit of low 8 bit.
*/
while (len1 > 0 && len2 > 0)
{
if (flags & NORM_IGNORESYMBOLS)
{
int skip = 0;
/* FIXME: not tested */
if (get_char_typeW(*str1) & (C1_PUNCT | C1_SPACE))
{
str1++;
len1--;
skip = 1;
}
if (get_char_typeW(*str2) & (C1_PUNCT | C1_SPACE))
{
str2++;
len2--;
skip = 1;
}
if (skip) continue;
}
ce1 = collation_table[collation_table[*str1 >> 8] + (*str1 & 0xff)];
ce2 = collation_table[collation_table[*str2 >> 8] + (*str2 & 0xff)];
if (ce1 != (unsigned int)-1 && ce2 != (unsigned int)-1)
ret = ((ce1 >> 4) & 0x0f) - ((ce2 >> 4) & 0x0f);
else
ret = *str1 - *str2;
if (ret) return ret;
if (ce1 - ce2) return ce1 - ce2;
str1++;
str2++;
@ -357,13 +260,13 @@ int wine_compare_string(int flags, const WCHAR *str1, int len1,
{
int ret;
ret = compare_unicode_weights(flags, str1, len1, str2, len2);
ret = compare_weights(flags, str1, len1, str2, len2, UNICODE_WEIGHT);
if (!ret)
{
if (!(flags & NORM_IGNORENONSPACE))
ret = compare_diacritic_weights(flags, str1, len1, str2, len2);
ret = compare_weights(flags, str1, len1, str2, len2, DIACRITIC_WEIGHT);
if (!ret && !(flags & NORM_IGNORECASE))
ret = compare_case_weights(flags, str1, len1, str2, len2);
ret = compare_weights(flags, str1, len1, str2, len2, CASE_WEIGHT);
}
return ret;
}