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/*
* SPDX-FileCopyrightText: 2013-2019 Tom G. Huang
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/*******************************************************************************
* argtable3_private: Declares private types, constants, and interfaces
*
* This file is part of the argtable3 library.
*
* Copyright (C) 2013-2019 Tom G. Huang
* <tomghuang@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of STEWART HEITMANN nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL STEWART HEITMANN BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
******************************************************************************/
#ifndef ARG_UTILS_H
#define ARG_UTILS_H
#include <stdlib.h>
#define ARG_ENABLE_TRACE 0
#define ARG_ENABLE_LOG 0
#ifdef __cplusplus
extern "C" {
#endif
enum { ARG_ERR_MINCOUNT = 1, ARG_ERR_MAXCOUNT, ARG_ERR_BADINT, ARG_ERR_OVERFLOW, ARG_ERR_BADDOUBLE, ARG_ERR_BADDATE, ARG_ERR_REGNOMATCH };
typedef void(arg_panicfn)(const char* fmt, ...);
#if defined(_MSC_VER)
#define ARG_TRACE(x) \
__pragma(warning(push)) __pragma(warning(disable : 4127)) do { \
if (ARG_ENABLE_TRACE) \
dbg_printf x; \
} \
while (0) \
__pragma(warning(pop))
#define ARG_LOG(x) \
__pragma(warning(push)) __pragma(warning(disable : 4127)) do { \
if (ARG_ENABLE_LOG) \
dbg_printf x; \
} \
while (0) \
__pragma(warning(pop))
#else
#define ARG_TRACE(x) \
do { \
if (ARG_ENABLE_TRACE) \
dbg_printf x; \
} while (0)
#define ARG_LOG(x) \
do { \
if (ARG_ENABLE_LOG) \
dbg_printf x; \
} while (0)
#endif
/*
* Rename a few generic names to unique names.
* They can be a problem for the platforms like NuttX, where
* the namespace is flat for everything including apps and libraries.
*/
#define xmalloc argtable3_xmalloc
#define xcalloc argtable3_xcalloc
#define xrealloc argtable3_xrealloc
#define xfree argtable3_xfree
extern void dbg_printf(const char* fmt, ...);
extern void arg_set_panic(arg_panicfn* proc);
extern void* xmalloc(size_t size);
extern void* xcalloc(size_t count, size_t size);
extern void* xrealloc(void* ptr, size_t size);
extern void xfree(void* ptr);
struct arg_hashtable_entry {
void *k, *v;
unsigned int h;
struct arg_hashtable_entry* next;
};
typedef struct arg_hashtable {
unsigned int tablelength;
struct arg_hashtable_entry** table;
unsigned int entrycount;
unsigned int loadlimit;
unsigned int primeindex;
unsigned int (*hashfn)(const void* k);
int (*eqfn)(const void* k1, const void* k2);
} arg_hashtable_t;
/**
* @brief Create a hash table.
*
* @param minsize minimum initial size of hash table
* @param hashfn function for hashing keys
* @param eqfn function for determining key equality
* @return newly created hash table or NULL on failure
*/
arg_hashtable_t* arg_hashtable_create(unsigned int minsize, unsigned int (*hashfn)(const void*), int (*eqfn)(const void*, const void*));
/**
* @brief This function will cause the table to expand if the insertion would take
* the ratio of entries to table size over the maximum load factor.
*
* This function does not check for repeated insertions with a duplicate key.
* The value returned when using a duplicate key is undefined -- when
* the hash table changes size, the order of retrieval of duplicate key
* entries is reversed.
* If in doubt, remove before insert.
*
* @param h the hash table to insert into
* @param k the key - hash table claims ownership and will free on removal
* @param v the value - does not claim ownership
* @return non-zero for successful insertion
*/
void arg_hashtable_insert(arg_hashtable_t* h, void* k, void* v);
#define ARG_DEFINE_HASHTABLE_INSERT(fnname, keytype, valuetype) \
int fnname(arg_hashtable_t* h, keytype* k, valuetype* v) { return arg_hashtable_insert(h, k, v); }
/**
* @brief Search the specified key in the hash table.
*
* @param h the hash table to search
* @param k the key to search for - does not claim ownership
* @return the value associated with the key, or NULL if none found
*/
void* arg_hashtable_search(arg_hashtable_t* h, const void* k);
#define ARG_DEFINE_HASHTABLE_SEARCH(fnname, keytype, valuetype) \
valuetype* fnname(arg_hashtable_t* h, keytype* k) { return (valuetype*)(arg_hashtable_search(h, k)); }
/**
* @brief Remove the specified key from the hash table.
*
* @param h the hash table to remove the item from
* @param k the key to search for - does not claim ownership
*/
void arg_hashtable_remove(arg_hashtable_t* h, const void* k);
#define ARG_DEFINE_HASHTABLE_REMOVE(fnname, keytype, valuetype) \
void fnname(arg_hashtable_t* h, keytype* k) { arg_hashtable_remove(h, k); }
/**
* @brief Return the number of keys in the hash table.
*
* @param h the hash table
* @return the number of items stored in the hash table
*/
unsigned int arg_hashtable_count(arg_hashtable_t* h);
/**
* @brief Change the value associated with the key.
*
* function to change the value associated with a key, where there already
* exists a value bound to the key in the hash table.
* Source due to Holger Schemel.
*
* @name hashtable_change
* @param h the hash table
* @param key
* @param value
*/
int arg_hashtable_change(arg_hashtable_t* h, void* k, void* v);
/**
* @brief Free the hash table and the memory allocated for each key-value pair.
*
* @param h the hash table
* @param free_values whether to call 'free' on the remaining values
*/
void arg_hashtable_destroy(arg_hashtable_t* h, int free_values);
typedef struct arg_hashtable_itr {
arg_hashtable_t* h;
struct arg_hashtable_entry* e;
struct arg_hashtable_entry* parent;
unsigned int index;
} arg_hashtable_itr_t;
arg_hashtable_itr_t* arg_hashtable_itr_create(arg_hashtable_t* h);
void arg_hashtable_itr_destroy(arg_hashtable_itr_t* itr);
/**
* @brief Return the value of the (key,value) pair at the current position.
*/
extern void* arg_hashtable_itr_key(arg_hashtable_itr_t* i);
/**
* @brief Return the value of the (key,value) pair at the current position.
*/
extern void* arg_hashtable_itr_value(arg_hashtable_itr_t* i);
/**
* @brief Advance the iterator to the next element. Returns zero if advanced to end of table.
*/
int arg_hashtable_itr_advance(arg_hashtable_itr_t* itr);
/**
* @brief Remove current element and advance the iterator to the next element.
*/
int arg_hashtable_itr_remove(arg_hashtable_itr_t* itr);
/**
* @brief Search and overwrite the supplied iterator, to point to the entry matching the supplied key.
*
* @return Zero if not found.
*/
int arg_hashtable_itr_search(arg_hashtable_itr_t* itr, arg_hashtable_t* h, void* k);
#define ARG_DEFINE_HASHTABLE_ITERATOR_SEARCH(fnname, keytype) \
int fnname(arg_hashtable_itr_t* i, arg_hashtable_t* h, keytype* k) { return (arg_hashtable_iterator_search(i, h, k)); }
#ifdef __cplusplus
}
#endif
#endif
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