Data.c File Reference

#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "Data.h"
#include "Hash.h"
#include "MutableData.h"

Go to the source code of this file.

Macros
#define	_Class   _Data
#define	DATA_BLOCK_SIZE   4096

Functions
Class *	_Data (void)
static Object *	copy (const Object *self)
static Data *	dataWithBytes (const uint8_t *bytes, size_t length)
static Data *	dataWithConstMemory (const ident mem, size_t length)
static Data *	dataWithContentsOfFile (const char *path)
static Data *	dataWithMemory (ident mem, size_t length)
static void	dealloc (Object *self)
static int	hash (const Object *self)
static void	initialize (Class *clazz)
static Data *	initWithBytes (Data *self, const uint8_t *bytes, size_t length)
static Data *	initWithConstMemory (Data *self, const ident mem, size_t length)
static Data *	initWithContentsOfFile (Data *self, const char *path)
static Data *	initWithMemory (Data *self, ident mem, size_t length)
static _Bool	isEqual (const Object *self, const Object *other)
static MutableData *	mutableCopy (const Data *self)
static _Bool	writeToFile (const Data *self, const char *path)

Macro Definition Documentation

_Class

#define _Class   _Data

Definition at line 33 of file Data.c.

DATA_BLOCK_SIZE

#define DATA_BLOCK_SIZE   4096

Definition at line 35 of file Data.c.

Function Documentation

_Data()

Class * _Data

(

void

)

Definition at line 283 of file Data.c.

                   {
    static Class *clazz;
    static Once once;
 
    do_once(&once, {
        clazz = _initialize(&(const ClassDef) {
            .name = "Data",
            .superclass = _Object(),
            .instanceSize = sizeof(Data),
            .interfaceOffset = offsetof(Data, interface),
            .interfaceSize = sizeof(DataInterface),
            .initialize = initialize,
        });
    });
 
    return clazz;
}

copy()

static Object * copy ( const Object *  self )

static

See also

Object::copy(const Object *)

Definition at line 42 of file Data.c.

                                        {
 
    Data *this = (Data *) self;
 
    return (Object *) $(alloc(Data), initWithBytes, this->bytes, this->length);
}

dataWithBytes()

static Data * dataWithBytes ( const uint8_t *  bytes, size_t  length  )

static

Definition at line 109 of file Data.c.

                                                                {
 
    return $(alloc(Data), initWithBytes, bytes, length);
}

dataWithConstMemory()

static Data * dataWithConstMemory ( const ident  mem, size_t  length  )

static

Definition at line 118 of file Data.c.

                                                                 {
 
    return $(alloc(Data), initWithConstMemory, mem, length);
}

dataWithContentsOfFile()

static Data * dataWithContentsOfFile ( const char *  path )

static

Definition at line 127 of file Data.c.

                                                      {
 
    return $(alloc(Data), initWithContentsOfFile, path);
}

dataWithMemory()

static Data * dataWithMemory ( ident  mem, size_t  length  )

static

Definition at line 136 of file Data.c.

                                                      {
 
    return $(alloc(Data), initWithMemory, mem, length);
}

dealloc()

static void dealloc ( Object *  self )

static

See also

Object::dealloc(Object *)

Definition at line 52 of file Data.c.

                                  {
 
    Data *this = (Data *) self;
 
    if (this->destroy) {
        if (this->bytes) {
            this->destroy(this->bytes);
        }
    }
 
    super(Object, self, dealloc);
}

hash()

static int hash ( const Object *  self )

static

See also

Object::hash(const Object *)

Definition at line 68 of file Data.c.

                                    {
 
    Data *this = (Data *) self;
 
    int hash = HASH_SEED;
    hash = HashForInteger(hash, this->length);
 
    const Range range = { 0, this->length };
    hash = HashForBytes(hash, this->bytes, range);
 
    return hash;
}

initialize()

static void initialize ( Class *  clazz )

static

See also

Class::initialize(Class *)

Definition at line 260 of file Data.c.

                                     {
 
    ((ObjectInterface *) clazz->interface)->copy = copy;
    ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
    ((ObjectInterface *) clazz->interface)->hash = hash;
    ((ObjectInterface *) clazz->interface)->isEqual = isEqual;
 
    ((DataInterface *) clazz->interface)->dataWithBytes = dataWithBytes;
    ((DataInterface *) clazz->interface)->dataWithConstMemory = dataWithConstMemory;
    ((DataInterface *) clazz->interface)->dataWithContentsOfFile = dataWithContentsOfFile;
    ((DataInterface *) clazz->interface)->dataWithMemory = dataWithMemory;
    ((DataInterface *) clazz->interface)->initWithBytes = initWithBytes;
    ((DataInterface *) clazz->interface)->initWithConstMemory = initWithConstMemory;
    ((DataInterface *) clazz->interface)->initWithContentsOfFile = initWithContentsOfFile;
    ((DataInterface *) clazz->interface)->initWithMemory = initWithMemory;
    ((DataInterface *) clazz->interface)->mutableCopy = mutableCopy;
    ((DataInterface *) clazz->interface)->writeToFile = writeToFile;
}

initWithBytes()

static Data * initWithBytes ( Data *  self, const uint8_t *  bytes, size_t  length  )

static

Definition at line 145 of file Data.c.

                                                                            {
 
    ident mem = malloc(length);
    assert(mem);
 
    memcpy(mem, bytes, length);
 
    return $(self, initWithMemory, mem, length);
}

initWithConstMemory()

static Data * initWithConstMemory ( Data *  self, const ident  mem, size_t  length  )

static

Definition at line 159 of file Data.c.

                                                                             {
 
    self = (Data *) super(Object, self, init);
    if (self) {
        self->bytes = mem;
        self->length = length;
    }
 
    return self;
}

initWithContentsOfFile()

static Data * initWithContentsOfFile ( Data *  self, const char *  path  )

static

Definition at line 174 of file Data.c.

                                                                  {
 
    assert(path);
 
    FILE *file = fopen(path, "rb");
    if (file) {
        ident mem = NULL;
 
        int err = fseek(file, 0, SEEK_END);
        assert(err == 0);
 
        const size_t length = ftell(file);
        if (length) {
 
            mem = malloc(length);
            assert(mem);
 
            err = fseek(file, 0, SEEK_SET);
            assert(err == 0);
 
            const size_t read = fread(mem, length, 1, file);
            assert(read == 1);
        }
 
        fclose(file);
        return $(self, initWithMemory, mem, length);
    }
 
    return release(self);
}

initWithMemory()

static Data * initWithMemory ( Data *  self, ident  mem, size_t  length  )

static

Definition at line 209 of file Data.c.

                                                                  {
 
    self = $(self, initWithConstMemory, mem, length);
    if (self) {
        self->destroy = free;
    }
 
    return self;
}

isEqual()

static _Bool isEqual ( const Object *  self, const Object *  other  )

static

See also

Object::isEqual(const Object *, const Object *)

Definition at line 84 of file Data.c.

                                                              {
 
    if (super(Object, self, isEqual, other)) {
        return true;
    }
 
    if (other && $(other, isKindOfClass, _Data())) {
 
        const Data *this = (Data *) self;
        const Data *that = (Data *) other;
 
        if (this->length == that->length) {
            return memcmp(this->bytes, that->bytes, this->length) == 0;
        }
    }
 
    return false;
}

mutableCopy()

static MutableData * mutableCopy ( const Data *  self )

static

Definition at line 223 of file Data.c.

                                                  {
 
    return $(alloc(MutableData), initWithData, self);
}

writeToFile()

static _Bool writeToFile ( const Data *  self, const char *  path  )

static

Definition at line 232 of file Data.c.

                                                             {
 
    assert(path);
 
    FILE *file = fopen(path, "w");
    if (file) {
 
        size_t count = 1;
 
        if (self->length) {
            count = fwrite(self->bytes, self->length, 1, file);
        }
 
        fclose(file);
 
        if (count == 1) {
            return true;
        }
    }
 
    return false;
}