[fpc-pascal] updating an old DOS tool using PChar strings

[Tomas Hajny]

On Wed, February 19, 2014 23:58, leledumbo wrote:
> Well, if you're not using FPC, then asking for non-FPC code here isn't the
> right way. It's useless to point yout o FPC units that BP7 doesn't have.
> As
> you've experienced, ReplaceStr (from StrUtils), StringReplace (from
> SysUtils) are FPC and Delphi routines, and BP7 doesn't have those units
> AFAIK. They don't work with PChar anyway.

I'd add:

- It is not clear to me why FPC should be more problematic than BP7 (I
assume that you do not talk about a 286 PC; even if you do, trunk with the
plain 16-bit msdos support might still do it for you). What is the exact
execution environment where you intend to use the compiled program
(operating system, CPU type)?

- It is not completely clear what is the goal/task (e.g. whether it is
necessary to modify the PChar string in place, or whether it is OK to
convert PChar to a Pascal string first, perform all the necessary
operations on it and then pass a pointer to the string data as a PChar for
some other processing expecting a PChar parameter).

Tomas