NAME¶
optionProcess - this is the main option processing routine
SYNOPSIS¶
#include <
your-opts.h>
cc [...] -o outfile infile.c -l
opts [...]
int
optionProcess(tOptions*
opts, int
a_ct, char**
a_v);
DESCRIPTION¶
This is the main entry point for processing options. It is intended that this
procedure be called once at the beginning of the execution of a program.
Depending on options selected earlier, it is sometimes necessary to stop and
restart option processing, or to select completely different sets of options.
This can be done easily, but you generally do not want to do this.
The number of arguments processed always includes the program name. If one of
the arguments is "--", then it is counted and the processing stops.
If an error was encountered and errors are to be tolerated, then the returned
value is the index of the argument causing the error. A hyphen by itself
("-") will also cause processing to stop and will
not be
counted among the processed arguments. A hyphen by itself is treated as an
operand. Encountering an operand stops option processing.
- opts
- program options descriptor
- a_ct
- program arg count
- a_v
- program arg vector
RETURN VALUE¶
the count of the arguments processed
ERRORS¶
Errors will cause diagnostics to be printed.
exit(3) may or may not be
called. It depends upon whether or not the options were generated with the
"allow-errors" attribute, or if the ERRSKIP_OPTERR or ERRSTOP_OPTERR
macros were invoked.
SEE ALSO¶
The
info documentation for the -l
opts library.
ao_string_tokenize(3),
configFileLoad(3),
optionFileLoad(3),
optionFindNextValue(3),
optionFindValue(3),
optionFree(3),
optionGetValue(3),
optionLoadLine(3),
optionMemberList(3),
optionNextValue(3),
optionOnlyUsage(3),
optionPrintVersion(3),
optionPrintVersionAndReturn(3),
optionRestore(3),
optionSaveFile(3),
optionSaveState(3),
optionUnloadNested(3),
optionVersion(3),
strequate(3),
streqvcmp(3),
streqvmap(3),
strneqvcmp(3),
strtransform(3),
