how to get the \uxxxx unicode code from a char

[jicman via Digitalmars-d-learn]

Greetings.

Imagine this code,

char[] s = "ABCabc";
foreach (char c; s)
{
// how do I convert c to something an Unicode code? ie. \u9999.

}

thanks.

[Sean Kelly via Digitalmars-d-learn]

Post by jicman via Digitalmars-d-learn
Greetings.
Imagine this code,
char[] s = "ABCabc";
foreach (char c; s)
{
// how do I convert c to something an Unicode code? ie.
\u9999.
}

I'd look at the JSON string encoder.

[jicman via Digitalmars-d-learn]

Post by Sean Kelly via Digitalmars-d-learn

Post by jicman via Digitalmars-d-learn
Greetings.
Imagine this code,
char[] s = "ABCabc";
foreach (char c; s)
{
// how do I convert c to something an Unicode code? ie.
\u9999.
}

I'd look at the JSON string encoder.

JSON? What does JSON has to do with my basic D? :-) No thanks.
:-)

[Brad Anderson via Digitalmars-d-learn]

Post by jicman via Digitalmars-d-learn

Post by Sean Kelly via Digitalmars-d-learn

Post by jicman via Digitalmars-d-learn
Greetings.
Imagine this code,
char[] s = "ABCabc";
foreach (char c; s)
{
// how do I convert c to something an Unicode code? ie.
\u9999.
}

I'd look at the JSON string encoder.

JSON? What does JSON has to do with my basic D? :-) No thanks.
:-)

Sean's saying that the JSON encoder does the same thing so you
can look there for how to do it.

https://github.com/D-Programming-Language/phobos/blob/master/std/json.d#L579

[Brad Anderson via Digitalmars-d-learn]

Post by Brad Anderson via Digitalmars-d-learn
https://github.com/D-Programming-Language/phobos/blob/master/std/json.d#L579

Oops. Linked the the parser section. I actually don't see any
unicode escape encoder in here. Perhaps he meant the upcoming
JSON module.

[Brad Anderson via Digitalmars-d-learn]

On Tuesday, 14 October 2014 at 20:05:07 UTC, Brad Anderson

Post by Brad Anderson via Digitalmars-d-learn
https://github.com/D-Programming-Language/phobos/blob/master/std/json.d#L579

Oops. Linked the the parser section. I actually don't see any
unicode escape encoder in here. Perhaps he meant the upcoming
JSON module.

Here we go.

https://github.com/s-ludwig/std_data_json/blob/4ecb90626055269f4897902404741f1173fb5e8e/source/stdx/data/json/generator.d#L451

Sönke's is pretty sophisticated. You could probably just use the
non-surrogate supporting simple branch.

[jicman via Digitalmars-d-learn]

On Tuesday, 14 October 2014 at 20:08:03 UTC, Brad Anderson

On Tuesday, 14 October 2014 at 20:05:07 UTC, Brad Anderson

Post by Brad Anderson via Digitalmars-d-learn
https://github.com/D-Programming-Language/phobos/blob/master/std/json.d#L579

Oops. Linked the the parser section. I actually don't see any
unicode escape encoder in here. Perhaps he meant the upcoming
JSON module.

Here we go.
https://github.com/s-ludwig/std_data_json/blob/4ecb90626055269f4897902404741f1173fb5e8e/source/stdx/data/json/generator.d#L451
Sönke's is pretty sophisticated. You could probably just use
the non-surrogate supporting simple branch.

thanks. the problem is that I am still in D1. ;-) over 300K
lines of code and growing...

[Sean Kelly via Digitalmars-d-learn]

On Tuesday, 14 October 2014 at 20:05:07 UTC, Brad Anderson

Post by Brad Anderson via Digitalmars-d-learn
https://github.com/D-Programming-Language/phobos/blob/master/std/json.d#L579

Oops. Linked the the parser section. I actually don't see any
unicode escape encoder in here. Perhaps he meant the upcoming
JSON module.

Wow... the current std.json doesn't do string encoding? I knew
it was bad, but...

In any case, yes, I mentioned JSON because strings are supposed
to be encoded exactly the way you're asking. It was easier to
point at that than try to outline the process explicitly.

[ketmar via Digitalmars-d-learn]

On Tue, 14 Oct 2014 19:46:57 +0000

Post by jicman via Digitalmars-d-learn
char[] s = "ABCabc";
foreach (char c; s)
{
// how do I convert c to something an Unicode code? ie. \u9999.
}

string res;
foreach (dchar ch; s) res ~= "\\u%04X".format(ch);
// here we have the result in res

note "dchar" instead of "char". with "dchar" foreach() does utf-8
decoding (as 's' is in utf-8).

[jicman via Digitalmars-d-learn]

On Tuesday, 14 October 2014 at 19:56:29 UTC, ketmar via

Post by ketmar via Digitalmars-d-learn
On Tue, 14 Oct 2014 19:46:57 +0000
jicman via Digitalmars-d-learn

Post by jicman via Digitalmars-d-learn
char[] s = "ABCabc";
foreach (char c; s)
{
// how do I convert c to something an Unicode code? ie.
\u9999.
}

string res;
foreach (dchar ch; s) res ~= "\\u%04X".format(ch);
// here we have the result in res
note "dchar" instead of "char". with "dchar" foreach() does
utf-8
decoding (as 's' is in utf-8).

Thanks. This is a missing function in std.uni or std.string.

josé

[Ali Çehreli via Digitalmars-d-learn]

Post by jicman via Digitalmars-d-learn
Thanks. This is a missing function in std.uni or std.string.
josé

I don't know D1 but there is std.utf.decode:

http://dlang.org/phobos/std_utf.html#decode

Ali