Il 08/03/2014 14:05, Mattias Gaertner ha scritto:
On Sat, 08 Mar 2014 13:52:12 +0100
Giuliano Colla <[email protected]> wrote:
[snip]
What I'm doing wrong?
The solution lies in your own mail. Your mail is UTF-8 and so are the
above characters. Just copy the above characters from your mail to the
IDE:
aText := 'SomeString¥';
Note: Keep in mind that "char" is a single byte, but ¥ in UTF-8 is
multiple bytes.
I was aware of that. My problem is that the char I must add to the Utf8
string is calculated run time, and is in the range Unicode $A0-$BF.
I had assumed (wrongly) that the compiler was smart enough to convert a
type "char" to UTF8, when concatenating it to an UTf8 string. Instead it
turns out that the character is appended as it is, which leads to an
invalid UTF8 character (above 127), which displays as a crossed box.
IMHO that's an FPC bug.
When I realized that, I then tried to explicitly convert the Unicode
char to UTF8, but again I failed, this time because of the default
behavior which is to map char <-> Unicode only in the range 0-127.
Anything above 127 becomes a question mark.
Therefore my symbol displays as a question mark.
IMHO that's a silly FPC limitation.
The only way out I found was to build a table of UTf8 strings in the
correct range (corresponding to the Unicode symbols from $A0 to $BF),
and use my calculated value as an index to that table.
Rather cumbersome and inelegant, if you think that in the unit ustrings
there's an UnicodeToUtf8 routine, which performs exactly the required
conversion, but which can't be used because of the above silly limitation.
Giuliano
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