Re: Extend functionality of printf (Add colours)

[Kenny McCormack]

In article <391f429b-4cb8-4762-80bf-511a1dc5eeab@a2 9g2000pra.googl egroups.com>,
Tomás Ó hÉilidhe <toe@lavabit.co mwrote:

>
>Firstly... before the guns go off... I realise that the C Standard
>doesn't mention anything about the existence of colour, which is why
>I'm writing a small little cross-platform library for setting the
>console text colour. It'll have a function like as follows:

First, I haven't analyzed your code in depth, and I don't really care
about the minutiae. I leave that to the pedants^Wlangua ge lawyers.

However, if I were doing this, I'd do it the other way around. That is,
I'd call one of the vs*tf*() functions once, at the beginnning, to
expand out the %(s). Then, I'd go back and parse the string - handling
the color coding stuff via my function, and printf'ing the rest.

[=?ISO-8859-1?Q?Tom=E1s_=D3_h=C9ilidhe?=]

Re: Extend functionality of printf (Add colours)

On Nov 10, 9:00 pm, gaze...@shell.x mission.com (Kenny McCormack)
wrote:

However, if I were doing this, I'd do it the other way around.  That is,
I'd call one of the vs*tf*() functions once, at the beginnning, to
expand out the %(s).  Then, I'd go back and parse the string - handling
the color coding stuff via my function, and printf'ing the rest.

OK so let's say I start off with an invocation as follows:

cprintf(stdout, "I'll ^brhave %u ^byand %u.",7,63);

First of all, I remove the markers so that it's:
"I'll have %u and %u."

I'll have to keep note that the address of 'h' is where my first
marker was, and that the address of 'a' is where my second marker was.

Next I use sprintf to turn "I'll have %u and %u." into "I'll have 7
and 63".

One problem is that I don't know how many characters "%u" will compute
to, I mean in the case of 7 it was one character but in the case of 63
it was two characters. This will screw up the address I previously had
for the second marker.

I suppose though, I could compare the strings from the end backwards
so that I'll now where the marker was (...if you catch what I mean).

Anyone got any ideas?

[=?ISO-8859-1?Q?Tom=E1s_=D3_h=C9ilidhe?=]

Re: Extend functionality of printf (Add colours)

On Nov 10, 9:43 pm, Tomás Ó hÉilidhe <t...@lavabit.c omwrote:

OK so let's say I start off with an invocation as follows:
>
cprintf(stdout, "I'll ^brhave %u ^byand %u.",7,63);
>
First of all, I remove the markers so that it's:
    "I'll have %u and %u."

Forget all that crap I just wrote, I'm just after realising that
there's no reason why I can't leave the markers in for the call to
sprintf, and then take them out later.

[Kenny McCormack]

Re: Extend functionality of printf (Add colours)

In article <6a86e83f-9cad-414b-9b88-f6871689f254@u2 9g2000pro.googl egroups.com>,
Tomás Ó hÉilidhe <toe@lavabit.co mwrote:

>On Nov 10, 9:43 pm, Tomás Ó hÉilidhe <t...@lavabit.c omwrote:
>

>OK so let's say I start off with an invocation as follows:
>>
>cprintf(stdout ,"I'll ^brhave %u ^byand %u.",7,63);
>>
>First of all, I remove the markers so that it's:
>    "I'll have %u and %u."

>
>
>Forget all that crap I just wrote, I'm just after realising that
>there's no reason why I can't leave the markers in for the call to
>sprintf, and then take them out later.

Right. Saves me the trouble of flaming you...

[Phil Carmody]

Re: Extend functionality of printf (Add colours)

Tomás Ó hÉilidhe <toe@lavabit.co mwrites:

On Nov 10, 9:43 pm, Tomás Ó hÉilidhe <t...@lavabit.c omwrote:
>

>OK so let's say I start off with an invocation as follows:
>>
>cprintf(stdout ,"I'll ^brhave %u ^byand %u.",7,63);
>>
>First of all, I remove the markers so that it's:
>    "I'll have %u and %u."

>
Forget all that crap I just wrote, I'm just after realising that
there's no reason why I can't leave the markers in for the call to
sprintf, and then take them out later.

Beware - if you're ever sprintfing externally-supplied strings,
then they could include console control codes. I don't know if
you'd want that or not.

Phil
--
I tried the Vista speech recognition by running the tutorial. I was
amazed, it was awesome, recognised every word I said. Then I said the
wrong word ... and it typed the right one. It was actually just
detecting a sound and printing the expected word! -- pbhj on /.