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GETALLARGS(3) Schily's LIBRARY FUNCTIONS GETALLARGS(3)
NAME
getallargs() - parses all the flag-type arguments
SYNOPSIS
#include <schily/getargs.h>
int getallargs(pac, pav, fmt, a1, ..., an)
int *pac; /* pointer to arg count */
char *(*pav)[]; /* pointer to address of arg vector */
char *fmt; /* format string */
type *a1; /* pointer to result 1 */
/* (corresponding to the */
/* first descriptor in fmt) */
type *an; /* pointer to result n */
/* (corresponding to the */
/* nth descriptor in fmt) */
int getlallargs(pac, pav, props, fmt, a1, ..., an)
int *pac; /* pointer to arg count */
char *(*pav)[]; /* pointer to address of arg vector */
struct ga_props *props; /* control properties */
char *fmt; /* format string */
type *a1; /* pointer to result 1 */
/* (corresponding to the */
/* first descriptor in fmt) */
type *an; /* pointer to result n */
/* (corresponding to the */
/* nth descriptor in fmt) */
int getvallargs(pac, pav, props, vfmt)
int *pac; /* pointer to arg count */
char *(*pav)[]; /* pointer to address of arg vector */
struct ga_props *props; /* control properties */
struct ga_flags *vfmt; /* array of formats and args */
DESCRIPTION
getallargs() is part of the advanced option parsing interface together
with the getargs() and getfiles() family.
getallargs() parses all flag (option) arguments (anywhere on the
command line). It does not return until all the arguments have been
parsed correctly (returning 0), or an error has occurred (returning <
0).
getlallargs() is similar to getallargs() but it implements an
additional ga_props parameter that must be initialized with
getarginit() before it is passed.
getvallargs() is similar to getlallargs() but uses a structure ga_flags
instead of a format string and a variable arg list with pointers. The
array of structures ga_flags:
struct ga_flags {
const char *ga_format; /* Comma separated list for one flag */
void *ga_arg; /* Ptr. to variable to fill for flag */
getpargfun ga_funcp; /* Ptr. for function to call (&/~) */
};
RETURNS
NOARGS 0 All arguments have been successfully examined.
BADFLAG -1 A bad flag (option) argument was supplied to the program.
The argument *pav contains the offending command line
argument.
BADFMT -2 A bad format descriptor string has been detected. This
means an error in the calling program, not a user input
data error.
General rules for the return code:
> 0 A file type argument was found.
0 All arguments have been parsed.
< 0 An error occurred or not a file type argument.
Flag and file arg processing should be terminated after getting a
return code <= 0.
SEE ALSO
getargs(3), getargerror(3), getfiles(3).
NOTES
getallargs() must be called with the address of a count of items in the
vector and the address of a pointer to the vector. Both addresses must
already have been properly treated in order to skip over the first
parameter which is the name of the program. [e.g. --ac; ++av].
Since getallargs() will destroy these values, copies should be made for
later use in the program. If an error occurs, av[0] points to the
unmatched argument.
The special argument, "--", is ignored, but the following argument in
the command line is treated as a literal filename argument. This way,
filenames beginning with '-', '+', or containing '=' can be passed to
the routine.
BUGS
None currently known.
Mail bugs and suggestions to schilytools@mlists.in-berlin.de or open a
ticket at https://codeberg.org/schilytools/schilytools/issues.
The mailing list archive may be found at:
https://mlists.in-berlin.de/mailman/listinfo/schilytools-mlists.in-berlin.de.
AUTHOR
Joerg Schilling and the schilytools project authors.
Joerg Schilling 2022/09/09 GETALLARGS(3)