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[Solved] C open() function in Lazarus?
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Topic: [Solved] C open() function in Lazarus? (Read 3327 times)
Edson
Hero Member
Posts: 1302
[Solved] C open() function in Lazarus?
«
on:
December 04, 2016, 04:53:06 am »
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.
«
Last Edit: December 05, 2016, 03:56:11 am by Edson
»
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Lazarus 2.2.6 - FPC 3.2.2 - x86_64-win64 on Windows 10
derek.john.evans
Guest
Re: C open() function in Lazarus?
«
Reply #1 on:
December 04, 2016, 05:11:39 am »
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
Global Moderator
Hero Member
Posts: 2770
Re: C open() function in Lazarus?
«
Reply #2 on:
December 04, 2016, 05:14:20 am »
Quote from: Edson on December 04, 2016, 04:53:06 am
I 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
Hero Member
Posts: 14380
Sensorship about opinions does not belong here.
Re: C open() function in Lazarus?
«
Reply #3 on:
December 04, 2016, 08:20:21 am »
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]
[+]
[-]
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.
«
Last Edit: December 04, 2016, 08:28:24 am by Thaddy
»
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Object Pascal programmers should get rid of their "component fetish" especially with the non-visuals.
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