C语言数组

从zabbix里面摘出来的c语言数组，很经典

/*
 * strarray.cpp
 *
 *  Created on: 2017年1月18日
 *      Author: yangling
 */
#include "../../include/types.h"
#include "../../include/defs.h"
#include "../../include/common.h"


/******************************************************************************
 *                                                                            *
 * Function: str_strarr_init                                                  *
 *                                                                            *
 * Purpose: initialize dynamic string array                                   *
 *                                                                            *
 * Parameters: arr - a pointer to array of strings                            *
 *                                                                            *
 * Return value:                                                              *
 *                                                                            *
 * Author: Vladimir Levijev                                                   *
 *                                                                            *
 * Comments: allocates memory, calls assert() if that fails                   *
 *                                                                            *
 ******************************************************************************/
void	str_strarr_init(char ***arr)
{
	*arr = (char **)ext_malloc(*arr, sizeof(char *));
	**arr = NULL;
}

/******************************************************************************
 *                                                                            *
 * Function: str_strarr_add                                                   *
 *                                                                            *
 * Purpose: add a string to dynamic string array                              *
 *                                                                            *
 * Parameters: arr - a pointer to array of strings                            *
 *             entry - string to add                                          *
 *                                                                            *
 * Return value:                                                              *
 *                                                                            *
 * Author: Vladimir Levijev                                                   *
 *                                                                            *
 * Comments: allocates memory, calls assert() if that fails                   *
 *                                                                            *
 ******************************************************************************/
void	str_strarr_add(char ***arr, const char *entry)
{
	int	i;

	assert(entry);

	for (i = 0; NULL != (*arr)[i]; i++)
		;

	*arr = (char **)ext_realloc(*arr, sizeof(char *) * (i + 2));

	(*arr)[i] = ext_strdup((*arr)[i], entry);
	(*arr)[++i] = NULL;
}

/******************************************************************************
 *                                                                            *
 * Function: str_strarr_free                                                  *
 *                                                                            *
 * Purpose: free dynamic string array memory                                  *
 *                                                                            *
 * Parameters: arr - array of strings                                         *
 *                                                                            *
 * Return value:                                                              *
 *                                                                            *
 * Author: Vladimir Levijev                                                   *
 *                                                                            *
 ******************************************************************************/
void	str_strarr_free(char **arr)
{
	char	**p;

	for (p = arr; NULL != *p; p++) {
		ext_free(*p);
	}
	ext_free(arr);
}