Randima Niroshini wrote:
Hi all,
I would like to know on passing commandline arguments in different contexts
using GOption.
For an example passing one argument( 1 & 2) and multiple arguments(3) with
excluded parameter as follows.
1) ./parser --scan [FILE]
2) ./parser --parse [FILE]
However, it should be also possible to execute bothoptions at once,without
specifying expected file name twice.
3) ./parser --parse --scan [FILE]
1 & 2 cases are pretty straightforward to handle with GOption, but would like to
hear about a mechanism to handle the 3 rd case.
Am I correct in assuming you want --parse --scan [file] to have the same
effect as --parse [file] and --scan [file] ?
but,according to the way I used GOption command line parsing, I cannot achieve
the above.
Here's the code I used..
gboolean gbverbose = FALSE;
gboolean gbversion = FALSE;
gchar *gcparse = FALSE;
gchar *gcscan=FALSE;
GError *error = NULL;
GOptionEntry options[] = {
{ "verbose", 0, 0, G_OPTION_ARG_NONE, &gbverbose, "Add verbose output to
standard log", NULL },
{ "version", 0, 0, G_OPTION_ARG_NONE, &gbversion, "Print version information
on standard output", NULL },
{ "parse", 0, 0, G_OPTION_ARG_FILENAME, &gcparse, "Parse the program, print
errors on standard error", NULL },
{ "scan", 0, 0, G_OPTION_ARG_FILENAME, &gscan, "Scan the file", NULL }
{ NULL }
};
I think you want to use callback functions. the callback function for
scan and/or parse would check if an argument was passed and if so, set
the filename it woudl also set a flag that said that option was seen.
it would also check if the flag for having seen the other option was set
and based on that set or not the apropriate gcparse or gcscan variable
when there was an argument passed.
at least that would be my first take
rick jones
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