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riched20: Add support for letter labelled lists. 

Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Huw Davies 2016-10-10 13:13:03 +01:00 committed by Alexandre Julliard
parent db783986dc
commit 9265a91513
1 changed files with 34 additions and 1 deletions
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35
dlls/riched20/para.c
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@ -155,13 +155,46 @@ static ME_String *para_num_get_str( ME_Paragraph *para, WORD num )
ME_String *str = ME_MakeStringEmpty( 5 + 2 );
WCHAR *p = str->szData;
static const WCHAR fmtW[] = {'%', 'd', 0};
static const WORD letter_base[] = { 1, 26, 26 * 26, 26 * 26 * 26 };
int i, len;
WORD letter, total, char_offset = 0;
if (!str) return NULL;
if ((para->fmt.wNumberingStyle & 0xf00) == PFNS_PARENS)
*p++ = '(';
p += sprintfW( p, fmtW, num );
switch (para->fmt.wNumbering)
{
case PFN_ARABIC:
default:
p += sprintfW( p, fmtW, num );
break;
case PFN_LCLETTER:
char_offset = 'a' - 'A';
/* fall through */
case PFN_UCLETTER:
if (!num) num = 1;
/* This is not base-26 (or 27) as zeros don't count unless they are leading zeros.
It's simplest to start with the least significant letter, so first calculate how many letters are needed. */
for (i = 0, total = 0; i < sizeof(letter_base) / sizeof(letter_base[0]); i++)
{
total += letter_base[i];
if (num < total) break;
}
len = i;
for (i = 0; i < len; i++)
{
num -= letter_base[i];
letter = (num / letter_base[i]) % 26;
p[len - i - 1] = letter + 'A' + char_offset;
}
p += len;
*p = 0;
break;
}
switch (para->fmt.wNumberingStyle & 0xf00)
{