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Full Discussion: Reading long options in C++ program
Top Forums Programming Reading long options in C++ program Post 302611867 by kristinu on Friday 23rd of March 2012 04:38:25 PM
Old 03-23-2012
Reading long options in C++ program
I am reading arguments passed to a C++ program which accepts long options.

Long options start with '--', with the value joined with the option by an = sign, with no intervening spaces.

An example is as follows:

Code:
programName --vdz=15.0

I want to store 'vdz' in variable 'key', whereas 15.0 is stored in variable 'value'.

However I also need to find the character string starting from the first occurance of '='. I call it 'after'. Then assign 'value' by going to the second character position onward.

Code is as follows:
Code:
const char* after = strchr(argv[i], '=');
if (after != NULL) const char* value = after + 1;

Well, 'after' can be viewed as the value I want. Thus I am wondering whether I can assign 'value' immediately, or come up with a better descriptive variable name than 'after'.

Any suggestions?
 

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LEARN ABOUT DEBIAN

quake-server

QUAKE-SERVER(6) 						   Games Manual 						   QUAKE-SERVER(6)

NAME

       quake-server - dedicated server for Quake

SYNOPSIS

       quake-server [WRAPPER-OPTIONS] [ENGINE-OPTIONS] [ENGINE-COMMANDS]...

DESCRIPTION

       This manual page documents briefly the quake-server command.

       Quake  is  a  popular  first-person shooter game that appeared in 1996, released by iD Software.  This wrapper script will launch the Quake
       dedicated server.

       The game data needs to be installed independently using the 'game-data-packager'  program,  and	by  default  it  will  be  looked  for	at
       /usr/share/games/quake.

       This  wrapper  script  accepts the two common GNU-style options to get information on the program.  Any further arguments are passed to the
       engine unmodified.  Consult the engine documentation for full details, but most engines support a syntax whereby engine switches  are  pre-
       fixed with a minus sign, and you can give console commands by prefixing with a plus sign.  See the examples section for some common cases.

OPTIONS

       These options are accepted for WRAPPER-OPTIONS in the synopsis.

       -h, --help
	      Show summary of options.

       -v, --version
	      Show version of program.

SEE ALSO

       quake(6), quakespasm(6), game-data-packager(6).

AUTHOR

       This  manual  page, and the Quake wrapper script, were written by David Banks and Simon McVittie for the Debian project (and may be used by
       others).

								    2011-06-22							   QUAKE-SERVER(6)
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