/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
typedefenum
{
PL_OPT_OK, /* all's well with the option */
PL_OPT_EOL, /* end of options list */
PL_OPT_BAD /* invalid option (and value) */
} PLOptStatus;
typedefstruct PLLongOpt
{ constchar * longOptName; /* long option name string */
PRIntn longOption; /* value put in PLOptState for this option. */
PRBool valueRequired; /* If option name not followed by '=', */ /* value is the next argument from argv. */
} PLLongOpt;
typedefstruct PLOptState
{ char option; /* the name of the option */ constchar *value; /* the value of that option | NULL */
PLOptionInternal *internal; /* private processing state */
PRIntn longOption; /* value from PLLongOpt put here */
PRIntn longOptIndex; /* index into caller's array of PLLongOpts */
} PLOptState;
/* * PL_CreateOptState * * The argument "options" points to a string of single-character option * names. Option names that may have an option argument value must be * followed immediately by a ':' character.
*/
PR_EXTERN(PLOptState*) PL_CreateOptState(
PRIntn argc, char **argv, constchar *options);
/* * PL_CreateLongOptState * * Alternative to PL_CreateOptState. * Allows caller to specify BOTH a string of single-character option names, * AND an array of structures describing "long" (keyword) option names. * The array is terminated by a structure in which longOptName is NULL. * Long option values (arguments) may always be given as "--name=value". * If PLLongOpt.valueRequired is not PR_FALSE, and the option name was not * followed by '=' then the next argument from argv is taken as the value.
*/
PR_EXTERN(PLOptState*) PL_CreateLongOptState(
PRIntn argc, char **argv, constchar *options, const PLLongOpt *longOpts); /* * PL_DestroyOptState * * Call this to destroy the PLOptState returned from PL_CreateOptState or * PL_CreateLongOptState.
*/
PR_EXTERN(void) PL_DestroyOptState(PLOptState *opt);
/* * PL_GetNextOpt * * When this function returns PL_OPT_OK, * - opt->option will hold the single-character option name that was parsed, * or zero. * When opt->option is zero, the token parsed was either a "long" (keyword) * option or a positional parameter. * For a positional parameter, * - opt->longOptIndex will contain -1, and * - opt->value will point to the positional parameter string. * For a long option name, * - opt->longOptIndex will contain the non-negative index of the * PLLongOpt structure in the caller's array of PLLongOpt structures * corresponding to the long option name, and * For a single-character or long option, * - opt->longOption will contain the value of the single-character option * name, or the value of the longOption from the PLLongOpt structure * for that long option. See notes below. * - opt->value will point to the argument option string, or will * be NULL if option does not require argument. If option requires * argument but it is not provided, PL_OPT_BAD is returned. * When opt->option is non-zero, * - opt->longOptIndex will be -1 * When this function returns PL_OPT_EOL, or PL_OPT_BAD, the contents of * opt are undefined. * * Notes: It is possible to ignore opt->option, and always look at * opt->longOption instead. opt->longOption will contain the same value * as opt->option for single-character option names, and will contain the * value of longOption from the PLLongOpt structure for long option names. * This means that it is possible to equivalence long option names to * single character names by giving the longOption in the PLLongOpt struct * the same value as the single-character option name. * For long options that are NOT intended to be equivalent to any single- * character option, the longOption value should be chosen to not match * any possible single character name. It might be advisable to choose * longOption values greater than 0xff for such long options.
*/
PR_EXTERN(PLOptStatus) PL_GetNextOpt(PLOptState *opt);
PR_END_EXTERN_C
#endif/* defined(PLGETOPT_H_) */
/* plgetopt.h */
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