[Solved] C open()  function in Lazarus?
lazarus / 32-Linux

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Edson · 2016-12-04 03:53

Can someone tell me please, if there is (and what is) some equivalent
in fpc/lazarus, to the system C function open()?

It's declared something like:  int open (const char *__file, int
__oflag, ...)

I need to port a C code in linux OS.

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derek.john.evans · 2016-12-04 04:11

In SysUtils; FileOpen/FileClose/FileRead/FileWrite

http://www.freepascal.org/docs-html/rtl/sysutils/fileopen.html

Are close to 100% compatible.

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skalogryz · 2016-12-04 04:14

Quote from: Edson on December 04, 2016, 04:53:06 amI need to port a C
code in linux OS.
Lots of unix (linux) functions are fp- prefixed are declared in
BaseUnix  / Unix units.

If you're not planning to target Windows in future (or writing unix
specific) you could use whose!
For example C open() is fpopen in freepascal.

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Thaddy · 2016-12-04 07:20

I think you are not referring to a C Open() function perse, but to the
unix fs open(). That's indeed as skalogryz wrote simply Code: Pascal
 [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i
 FpOpen('/path/to/device/file');
Note that FileOpen/FileClose/FileRead/FileWrite are cross platform,
indeed, but under unix happen to use the FP prefixed functions from
./rtl/baseunix.pp like the above.
Filestreams do the same.