CoreFW  Check-in [2605e9af3f]

/*
 * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
 */

#include <stdlib.h>

#include "cfwobject.h"
#include "cfwarray.h"

struct CFWArray {
	CFWObject obj;
	void **data;
	size_t size;
};

static void
ctor(void *ptr)
{
	CFWArray *array = ptr;

	array->data = NULL;
	array->size = 0;
}

static void
dtor(void *ptr)
{
	CFWArray *array = ptr;
	size_t i;

	for (i = 0; i < array->size; i++)
		cfw_unref(array->data[i]);

	if (array->data != NULL)
		free(array->data);
}

static bool
equal(void *ptr1, void *ptr2)
{
	CFWObject *obj2 = ptr2;
	CFWArray *array1, *array2;
	size_t i;

	if (obj2->clsptr != cfw_array)
		return false;

	array1 = ptr1;
	array2 = ptr2;

	if (array1->size != array2->size)
		return false;

	for (i = 0; i < array1->size; i++)
		if (cfw_equal(array1->data[i], array2->data[i]))
			return false;

	return true;
}

static void*
copy(void *ptr)
{
	CFWArray *array = ptr;
	CFWArray *new;
	size_t i;

	if ((new = cfw_new(cfw_array)) == NULL)
		return NULL;

	if ((new->data = malloc(sizeof(void*) * array->size)) == NULL) {
		cfw_unref(new);
		return NULL;
	}
	new->size = array->size;

	for (i = 0; i < array->size; i++)
		new->data[i] = cfw_ref(array->data[i]);

	return new;
}

void*
cfw_array_get(CFWArray *array, size_t index)
{
	if (index >= array->size)
		return NULL;

	return array->data[index];
}

size_t
cfw_array_size(CFWArray *array)
{
	return array->size;
}

bool
cfw_array_set(CFWArray *array, size_t index, void *ptr)
{
	CFWObject *obj = ptr;
	CFWObject *old;

	if (index >= array->size)
		return false;

	cfw_ref(obj);
	old = array->data[index];
	array->data[index] = obj;
	cfw_unref(old);

	return true;
}

bool
cfw_array_push(CFWArray *array, void *ptr)
{
	CFWObject *obj = ptr;
	void **new;

	if (array->data == NULL)
		new = malloc(sizeof(void*));
	else
		new = realloc(array->data, sizeof(void*) * (array->size + 1));

	if (new == NULL)
		return false;

	new[array->size] = cfw_ref(obj);

	array->data = new;
	array->size++;

	return true;
}

void*
cfw_array_last(CFWArray *array)
{
	if (array->size == 0)
		return NULL;

	return array->data[array->size - 1];
}

bool
cfw_array_pop(CFWArray *array)
{
	void **new;
	void *last;

	if (array->size == 0)
		return NULL;

	if (array->size == 1) {
		cfw_unref(array->data[0]);
		free(array->data);
		array->data = NULL;
		array->size = 0;
		return true;
	}

	last = array->data[array->size - 1];

	new = realloc(array->data, sizeof(void*) * (array->size - 1));
	if (new == NULL)
		return false;

	cfw_unref(last);

	array->data = new;
	array->size--;

	return true;
}

static CFWClass class = {
	.name = "CFWArray",
	.size = sizeof(CFWArray),
	.ctor = ctor,
	.dtor = dtor,
	.equal = equal,
	.copy = copy
};
CFWClass *cfw_array = &class;

/*
 * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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 __CFWARRAY_H__
#define __CFWARRAY_H__

#include "cfwclass.h"

typedef struct CFWArray CFWArray;
extern CFWClass *cfw_array;
extern size_t cfw_array_size(CFWArray*);
extern void* cfw_array_get(CFWArray*, size_t);
extern bool cfw_array_set(CFWArray*, size_t, void*);
extern bool cfw_array_push(CFWArray*, void*);
extern void* cfw_array_last(CFWArray*);
extern bool cfw_array_pop(CFWArray*);

#endif

/*
 * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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 __CFWCLASS_H__
#define __CFWCLASS_H__

#include <stddef.h>
#include <stdbool.h>

typedef struct CFWClass {
	const char *name;
	size_t size;
	void (*ctor)(void*);
	void (*dtor)(void*);
	bool (*equal)(void*, void*);
	void* (*copy)(void*);
} CFWClass;

#endif

/*
 * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
 */

#include <stdlib.h>

#include "cfwobject.h"

void*
cfw_new(CFWClass *class)
{
	CFWObject *obj;

	if ((obj = malloc(class->size)) == NULL)
		return NULL;

	obj->clsptr = class;
	obj->ref_cnt = 1;

	if (class->ctor != NULL)
		class->ctor(obj);

	return obj;
}

void*
cfw_ref(void *ptr)
{
	CFWObject *obj = ptr;

	obj->ref_cnt++;

	return obj;
}

void
cfw_unref(void *ptr)
{
	CFWObject *obj = ptr;

	if (--obj->ref_cnt == 0)
		cfw_free(obj);
}

void
cfw_free(void *ptr)
{
	CFWObject *obj = ptr;

	if (obj->clsptr->dtor != NULL)
		obj->clsptr->dtor(obj);

	free(obj);
}

bool
cfw_equal(void *ptr1, void *ptr2)
{
	CFWObject *obj1 = ptr1, *obj2 = ptr2;

	if (obj1->clsptr->equal != NULL) {
		return obj1->clsptr->equal(obj1, obj2);
	} else
		return (obj1 == obj2);
}

void*
cfw_copy(void *ptr)
{
	CFWObject *obj = ptr;

	if (obj->clsptr->copy != NULL)
		return obj->clsptr->copy(obj);
	else
		return NULL;
}

static CFWClass class = {
	.name = "CFWObject",
	.size = sizeof(CFWObject),
};
CFWClass *cfw_object = &class;

/*
 * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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 __CFWOBJECT_H__
#define __CFWOBJECT_H__

#include "cfwclass.h"

typedef struct CFWObject {
	CFWClass *clsptr;
	int ref_cnt;
} CFWObject;

extern CFWClass *cfw_object;
extern void* cfw_new(CFWClass*);
extern void* cfw_ref(void*);
extern void cfw_unref(void*);
extern void cfw_free(void*);
extern bool cfw_equal(void*, void*);
extern void* cfw_copy(void*);

#endif

/*
 * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
 */

#include <stdlib.h>
#include <string.h>

#include "cfwobject.h"
#include "cfwstring.h"

struct CFWString {
	CFWObject obj;
	char *cstr;
	size_t len;
};

static void
ctor(void *ptr)
{
	CFWString *str = ptr;

	str->cstr = NULL;
	str->len = 0;
}

static void
dtor(void *ptr)
{
	CFWString *str = ptr;

	if (str->cstr != NULL)
		free(str->cstr);
}

static bool
equal(void *ptr1, void *ptr2)
{
	CFWObject *obj2 = ptr2;
	CFWString *str1, *str2;

	if (obj2->clsptr != cfw_string)
		return false;

	str1 = ptr1;
	str2 = ptr2;

	if (str1->len != str2->len)
		return false;

	return !strcmp(str1->cstr, str2->cstr);
}

static void*
copy(void *ptr)
{
	CFWString *str = ptr;
	CFWString *new;

	if ((new = cfw_new(cfw_string)) == NULL)
		return NULL;

	if ((new->cstr = malloc(str->len + 1)) == NULL) {
		cfw_unref(new);
		return NULL;
	}
	new->len = str->len;

	memcpy(new->cstr, str->cstr, str->len + 1);

	return new;
}

const char*
cfw_string_c(CFWString *string)
{
	return string->cstr;
}

size_t
cfw_string_len(CFWString *string)
{
	return string->len;
}

bool
cfw_string_set(CFWString *str, const char *cstr)
{
	char *copy;

	if ((copy = strdup(cstr)) == NULL)
		return false;

	if (str->cstr != NULL)
		free(str->cstr);

	str->cstr = copy;
	str->len = strlen(copy);

	return true;
}

static CFWClass class = {
	.name = "CFWString",
	.size = sizeof(CFWString),
	.ctor = ctor,
	.dtor = dtor,
	.equal = equal,
	.copy = copy
};
CFWClass *cfw_string = &class;

/*
 * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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 __CFWSTRING_H__
#define __CFWSTRING_H__

#include "cfwclass.h"

typedef struct CFWString CFWString;
extern CFWClass *cfw_string;
extern const char* cfw_string_c(CFWString*);
extern size_t cfw_string_len(CFWString*);
extern bool cfw_string_set(CFWString*, const char*);

#endif

/*
 * Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
 */

#include <stdio.h>

#include "cfwobject.h"
#include "cfwstring.h"
#include "cfwarray.h"

int
main()
{
	CFWArray *a;
	CFWString *s;
	size_t i;

	a = cfw_new(cfw_array);

	for (i = 0; i < 3; i++) {
		s = cfw_new(cfw_string);

		switch (i) {
		case 0:
			cfw_string_set(s, "Hello");
			break;
		case 1:
			cfw_string_set(s, "World");
			break;
		case 2:
			cfw_string_set(s, "!");
			break;
		}

		cfw_array_push(a, s);
		cfw_unref(s);
	}

	for (i = 0; i < cfw_array_size(a); i++)
		puts(cfw_string_c(cfw_array_get(a, i)));

	return 0;
}