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Command Argument Parsing
[Apache Portability Runtime library]


Data Structures

struct  apr_getopt_option_t
struct  apr_getopt_t

Typedefs

typedef void( apr_getopt_err_fn_t )(void *arg, const char *err,...)
typedef apr_getopt_t apr_getopt_t
typedef apr_getopt_option_t apr_getopt_option_t

Functions

apr_status_t apr_getopt_init (apr_getopt_t **os, apr_pool_t *cont, int argc, const char *const *argv)
apr_status_t apr_getopt (apr_getopt_t *os, const char *opts, char *option_ch, const char **option_arg)
apr_status_t apr_getopt_long (apr_getopt_t *os, const apr_getopt_option_t *opts, int *option_ch, const char **option_arg)

Typedef Documentation

typedef void( apr_getopt_err_fn_t)(void *arg, const char *err, ...)
 

defintion of a error function

typedef struct apr_getopt_option_t apr_getopt_option_t
 

See also:
apr_getopt_option_t

typedef struct apr_getopt_t apr_getopt_t
 

See also:
apr_getopt_t


Function Documentation

apr_status_t apr_getopt apr_getopt_t   os,
const char *    opts,
char *    option_ch,
const char **    option_arg
 

Parse the options initialized by apr_getopt_init().

Parameters:
os  The apr_opt_t structure returned by apr_getopt_init()
opts  A string of characters that are acceptable options to the program. Characters followed by ":" are required to have an option associated
option_ch  The next option character parsed
option_arg  The argument following the option character:
Returns:
There are four potential status values on exit. They are:
             APR_EOF      --  No more options to parse
             APR_BADCH    --  Found a bad option character
             APR_BADARG   --  No argument followed the option flag
             APR_SUCCESS  --  The next option was found.
 

apr_status_t apr_getopt_init apr_getopt_t **    os,
apr_pool_t   cont,
int    argc,
const char *const *    argv
 

Initialize the arguments for parsing by apr_getopt().

Parameters:
os  The options structure created for apr_getopt()
cont  The pool to operate on
argc  The number of arguments to parse
argv  The array of arguments to parse
Remarks:
Arguments 2 and 3 are most commonly argc and argv from main(argc, argv) The errfn is initialized to fprintf(stderr... but may be overridden.

apr_status_t apr_getopt_long apr_getopt_t   os,
const apr_getopt_option_t   opts,
int *    option_ch,
const char **    option_arg
 

Parse the options initialized by apr_getopt_init(), accepting long options beginning with "--" in addition to single-character options beginning with "-".

Parameters:
os  The apr_getopt_t structure created by apr_getopt_init()
opts  A pointer to a list of apr_getopt_option_t structures, which can be initialized with { "name", optch, has_args }. has_args is nonzero if the option requires an argument. A structure with an optch value of 0 terminates the list.
option_ch  Receives the value of "optch" from the apr_getopt_option_t structure corresponding to the next option matched.
option_arg  Receives the argument following the option, if any.
Returns:
There are four potential status values on exit. They are:
             APR_EOF      --  No more options to parse
             APR_BADCH    --  Found a bad option character
             APR_BADARG   --  No argument followed the option flag
             APR_SUCCESS  --  The next option was found.
 
When APR_SUCCESS is returned, os->ind gives the index of the first non-option argument. On error, a message will be printed to stdout unless os->err is set to 0. If os->interleave is set to nonzero, options can come after arguments, and os->argv will be permuted to leave non-option arguments at the end (the original argv is unaffected).


Generated on Thu Feb 26 22:53:26 2004 for Apache Portable Runtime by doxygen1.2.18