* Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE.
/* ============================================================================================== */ /* Structs and other types */ /* ============================================================================================== */
/** * Definition of a single argument.
*/ typedefstruct ZyanArgParseDefinition_
{ /** * The argument name, e.g. `--help`. * * Must start with either one or two dashes. Single dash arguments must consist of a single * character, (e.g. `-n`), double-dash arguments can be of arbitrary length.
*/ constchar* name; /** * Whether the argument is boolean or expects a value.
*/
ZyanBool boolean; /** * Whether this argument is required (error if missing).
*/
ZyanBool required;
} ZyanArgParseDefinition;
/** * Configuration for argument parsing.
*/ typedefstruct ZyanArgParseConfig_
{ /** * `argv` argument passed to `main` by LibC.
*/ constchar** argv; /** * `argc` argument passed to `main` by LibC.
*/
ZyanUSize argc; /** * Minimum # of accepted unnamed / anonymous arguments.
*/
ZyanUSize min_unnamed_args; /** * Maximum # of accepted unnamed / anonymous arguments.
*/
ZyanUSize max_unnamed_args; /** * Argument definition array, or `ZYAN_NULL`. * * Expects a pointer to an array of `ZyanArgParseDefinition` instances. The array is * terminated by setting the `.name` field of the last element to `ZYAN_NULL`. If no named * arguments should be parsed, you can also set this to `ZYAN_NULL`.
*/
ZyanArgParseDefinition* args;
} ZyanArgParseConfig;
/** * Information about a parsed argument.
*/ typedefstruct ZyanArgParseArg_
{ /** * Corresponding argument definition, or `ZYAN_NULL` for unnamed args. * * This pointer is borrowed from the `cfg` pointer passed to `ZyanArgParse`.
*/ const ZyanArgParseDefinition* def; /** * Whether the argument has a value (is non-boolean).
*/
ZyanBool has_value; /** * If `has_value == true`, then the argument value. * * This is a view into the `argv` string array passed to `ZyanArgParse` via the `cfg` argument.
*/
ZyanStringView value;
} ZyanArgParseArg;
/** * Parse arguments according to a `ZyanArgParseConfig` definition. * * @param cfg Argument parser config to use. * @param parsed Receives the parsed output. Vector of `ZyanArgParseArg`. Ownership is * transferred to the user. Input is expected to be uninitialized. On error, * the vector remains uninitialized. * @param error_token On error, if it makes sense, receives the argument fragment causing the * error. Optional, may be `ZYAN_NULL`. The pointer borrows into the `cfg` * struct and doesn't have to be freed by the user. * * @return A `ZyanStatus` status determining whether the parsing succeeded.
*/
ZYCORE_EXPORT ZyanStatus ZyanArgParse(const ZyanArgParseConfig *cfg, ZyanVector* parsed, constchar** error_token);
#endif
/** * Parse arguments according to a `ZyanArgParseConfig` definition. * * This version allows specification of a custom memory allocator and thus supports no-libc. * * @param cfg Argument parser config to use. * @param parsed Receives the parsed output. Vector of `ZyanArgParseArg`. Ownership is * transferred to the user. Input is expected to be uninitialized. On error, * the vector remains uninitialized. * @param error_token On error, if it makes sense, receives the argument fragment causing the * error. Optional, may be `ZYAN_NULL`. The pointer borrows into the `cfg` * struct and doesn't have to be freed by the user. * @param allocator The `ZyanAllocator` to be used for allocating the output vector's data. * * @return A `ZyanStatus` status determining whether the parsing succeeded.
*/
ZYCORE_EXPORT ZyanStatus ZyanArgParseEx(const ZyanArgParseConfig *cfg, ZyanVector* parsed, constchar** error_token, ZyanAllocator* allocator);
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