Native FormatString (sprintf)

[mk-soft]

Times had written this code a long time ago.
Add For better performans with dynamic number of parameters maybe "c sprintf" as native command.

Link: http://www.purebasic.fr/english/viewtop ... 12&t=32026

[mk-soft]

Pushup

[User_Russian]

Code: Select all

s.s{1024}
OpenLibrary(0, "MSVCRT.dll")
CallCFunction(0, "swprintf", @s, @"Param %i", 10)
Debug s

[skywalk]

What's wrong with floats?

Code: Select all

ImportC "MSVCRT.LIB" 
  swPrintf.l(out$, fmt$, Xd.d) As "swprintf"
EndImport
Define.s r$ = StrD(#PI,4) + "ZZZ"
x.d = #PI
Debug r$
Debug x
ShowMemoryViewer(@r$, 32)
Debug swPrintf(r$, "%e", x)
ShowMemoryViewer(@r$, 32)
Debug r$

[IdeasVacuum]

sprintf() would be an excellent addition to PB.

[Little John]

Code: Select all

s.s{1024}
OpenLibrary(0, "MSVCRT.dll")
CallCFunction(0, "swprintf", @s, @"Param %i", 10)
Debug s

Works on Windows, but not on Linux (and probably not on Mac, too).
I would appreciate to have a native cross-platform sprintf() function built-in into PureBasic.

For me, this is especially useful when I write programs that support multiple languages.
I then put all strings for one language in a file, and the strings contain placeholders such as %s etc., which will be replaced by their respective current values during runtime of the program. This way, all language dependent strings are easy to handle, and are completely separated from the rest of the program.

So +1 from me for this request.

[fryquez]

Linux has the glibc.

Code: Select all

ImportC ""
  snprintf(a, b, c.p-utf8 ,d)
EndImport

iBufferSize = 256
sOut.s = Space(iBufferSize)
snprintf(@sOut, iBufferSize, "Param %i", 10)
sOut = PeekS(@sOut, -1, #PB_UTF8)
Debug sOut

But would about Import with variable parameter?

[skywalk]

As I mentioned, the sXXprintf functions are halfway useless without float support.

Code: Select all

ImportC "MSVCRT.lib"
  snprintf(a, b, c.p-utf8, d.f) As "_snprintf"
EndImport
iBufferSize = 256
sOut.s = Space(iBufferSize)
snprintf(@sOut, iBufferSize, "Param %f", 10.2)  ;<-- "Param 0.000000"
sOut = PeekS(@sOut, -1, #PB_UTF8)
Debug sOut

[mk-soft]

The import of sprintf don´t work with dynamics's parameters and different datatypes (String, float, double, ...)

[wilbert]

The import of sprintf don´t work with dynamics's parameters and different datatypes (String, float, double, ...)

You could try vsprintf instead but of course a native solution is better.

[mk-soft]

Yes, but how to create va_list with purebasic

[skywalk]

ImportC sprintf() used to work in earlier PB versions.
But, I lost track after I wrote my own Engineering/Scientific formatter.
Maybe Fred could compile MSVCRT.lib to work with floats instead of going to the trouble of vsprintf()?

[wilbert]

Yes, but how to create va_list with purebasic

I looked into it but didn't realize that would be so complicated