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Copy pathmz_strm.c
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executable file
·408 lines (345 loc) · 11.2 KB
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/* mz_strm.c -- Stream interface
Version 2.0.1, October 16th, 2017
part of the MiniZip project
Copyright (C) 2012-2017 Nathan Moinvaziri
https://github.com/nmoinvaz/minizip
This program is distributed under the terms of the same license as zlib.
See the accompanying LICENSE file for the full text of the license.
*/
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include "mz.h"
#include "mz_strm.h"
/***************************************************************************/
int32_t mz_stream_open(void *stream, const char *path, int32_t mode)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->open == NULL)
return MZ_STREAM_ERROR;
return strm->vtbl->open(strm, path, mode);
}
int32_t mz_stream_is_open(void *stream)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->is_open == NULL)
return MZ_STREAM_ERROR;
return strm->vtbl->is_open(strm);
}
int32_t mz_stream_read(void *stream, void *buf, int32_t size)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->read == NULL)
return MZ_PARAM_ERROR;
if (mz_stream_is_open(stream) != MZ_OK)
return MZ_STREAM_ERROR;
return strm->vtbl->read(strm, buf, size);
}
int32_t mz_stream_read_uint8(void *stream, uint8_t *value)
{
uint8_t c = 0;
if (mz_stream_read(stream, &c, 1) == 1)
*value = (uint8_t)c;
else if (mz_stream_error(stream))
return MZ_STREAM_ERROR;
return MZ_OK;
}
int32_t mz_stream_read_uint16(void *stream, uint16_t *value)
{
uint8_t c = 0;
*value = 0;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value = (uint16_t)c;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint16_t)c) << 8;
return MZ_OK;
}
int32_t mz_stream_read_uint32(void *stream, uint32_t *value)
{
uint8_t c = 0;
*value = 0;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value = (uint32_t)c;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint32_t)c) << 8;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint32_t)c) << 16;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint32_t)c) << 24;
return MZ_OK;
}
int32_t mz_stream_read_uint64(void *stream, uint64_t *value)
{
uint8_t c = 0;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value = (uint64_t)c;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint64_t)c) << 8;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint64_t)c) << 16;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint64_t)c) << 24;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint64_t)c) << 32;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint64_t)c) << 40;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint64_t)c) << 48;
if (mz_stream_read_uint8(stream, &c) != MZ_OK)
return MZ_STREAM_ERROR;
*value += ((uint64_t)c) << 56;
return MZ_OK;
}
int32_t mz_stream_write(void *stream, const void *buf, int32_t size)
{
mz_stream *strm = (mz_stream *)stream;
if (size == 0)
return size;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->write == NULL)
return MZ_PARAM_ERROR;
if (mz_stream_is_open(stream) != MZ_OK)
return MZ_STREAM_ERROR;
return strm->vtbl->write(strm, buf, size);
}
static int32_t mz_stream_write_value(void *stream, uint64_t value, uint32_t len)
{
uint8_t buf[8];
uint32_t n = 0;
for (n = 0; n < len; n++)
{
buf[n] = (uint8_t)(value & 0xff);
value >>= 8;
}
if (value != 0)
{
// Data overflow - hack for ZIP64 (X Roche)
for (n = 0; n < len; n++)
buf[n] = 0xff;
}
if (mz_stream_write(stream, buf, len) != len)
return MZ_STREAM_ERROR;
return MZ_OK;
}
int32_t mz_stream_write_uint8(void *stream, uint8_t value)
{
return mz_stream_write_value(stream, value, sizeof(uint8_t));
}
int32_t mz_stream_write_uint16(void *stream, uint16_t value)
{
return mz_stream_write_value(stream, value, sizeof(uint16_t));
}
int32_t mz_stream_write_uint32(void *stream, uint32_t value)
{
return mz_stream_write_value(stream, value, sizeof(uint32_t));
}
int32_t mz_stream_write_uint64(void *stream, uint64_t value)
{
return mz_stream_write_value(stream, value, sizeof(uint64_t));
}
int32_t mz_stream_copy(void *target, void *source, int32_t len)
{
uint8_t buf[INT16_MAX];
int32_t bytes_to_copy = 0;
int32_t read = 0;
int32_t written = 0;
while (len > 0)
{
bytes_to_copy = len;
if (bytes_to_copy > sizeof(buf))
bytes_to_copy = sizeof(buf);
read = mz_stream_read(source, buf, bytes_to_copy);
if (read < 0)
return MZ_STREAM_ERROR;
written = mz_stream_write(target, buf, read);
if (written != read)
return MZ_STREAM_ERROR;
len -= read;
}
return MZ_OK;
}
int64_t mz_stream_tell(void *stream)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->tell == NULL)
return MZ_PARAM_ERROR;
if (mz_stream_is_open(stream) != MZ_OK)
return MZ_STREAM_ERROR;
return strm->vtbl->tell(strm);
}
int32_t mz_stream_seek(void *stream, int64_t offset, int32_t origin)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->seek == NULL)
return MZ_PARAM_ERROR;
if (mz_stream_is_open(stream) != MZ_OK)
return MZ_STREAM_ERROR;
return strm->vtbl->seek(strm, offset, origin);
}
int32_t mz_stream_close(void *stream)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->close == NULL)
return MZ_PARAM_ERROR;
if (mz_stream_is_open(stream) != MZ_OK)
return MZ_STREAM_ERROR;
return strm->vtbl->close(strm);
}
int32_t mz_stream_error(void *stream)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->error == NULL)
return MZ_PARAM_ERROR;
return strm->vtbl->error(strm);
}
int32_t mz_stream_set_base(void *stream, void *base)
{
mz_stream *strm = (mz_stream *)stream;
strm->base = (mz_stream *)base;
return MZ_OK;
}
int32_t mz_stream_get_prop_int64(void *stream, int32_t prop, int64_t *value)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->get_prop_int64 == NULL)
return MZ_PARAM_ERROR;
return strm->vtbl->get_prop_int64(stream, prop, value);
}
int32_t mz_stream_set_prop_int64(void *stream, int32_t prop, int64_t value)
{
mz_stream *strm = (mz_stream *)stream;
if (strm == NULL || strm->vtbl == NULL || strm->vtbl->set_prop_int64 == NULL)
return MZ_PARAM_ERROR;
return strm->vtbl->set_prop_int64(stream, prop, value);
}
void *mz_stream_create(void **stream, mz_stream_vtbl *vtbl)
{
if (stream == NULL)
return NULL;
if (vtbl == NULL || vtbl->create == NULL)
return NULL;
return vtbl->create(stream);
}
void mz_stream_delete(void **stream)
{
mz_stream *strm = NULL;
if (stream == NULL)
return;
strm = (mz_stream *)*stream;
if (strm != NULL && strm->vtbl != NULL && strm->vtbl->delete != NULL)
strm->vtbl->delete(stream);
*stream = NULL;
}
/***************************************************************************/
typedef struct mz_stream_passthru_s {
mz_stream stream;
int64_t total_in;
int64_t total_out;
} mz_stream_passthru;
/***************************************************************************/
int32_t mz_stream_passthru_open(void *stream, const char *path, int32_t mode)
{
return MZ_OK;
}
int32_t mz_stream_passthru_is_open(void *stream)
{
mz_stream_passthru *passthru = (mz_stream_passthru *)stream;
return mz_stream_is_open(passthru->stream.base);
}
int32_t mz_stream_passthru_read(void *stream, void *buf, int32_t size)
{
mz_stream_passthru *passthru = (mz_stream_passthru *)stream;
int32_t read = mz_stream_read(passthru->stream.base, buf, size);
if (read > 0)
passthru->total_in += read;
return read;
}
int32_t mz_stream_passthru_write(void *stream, const void *buf, int32_t size)
{
mz_stream_passthru *passthru = (mz_stream_passthru *)stream;
int32_t written = mz_stream_write(passthru->stream.base, buf, size);
if (written > 0)
passthru->total_out += written;
return written;
}
int64_t mz_stream_passthru_tell(void *stream)
{
mz_stream_passthru *passthru = (mz_stream_passthru *)stream;
return mz_stream_tell(passthru->stream.base);
}
int32_t mz_stream_passthru_seek(void *stream, int64_t offset, int32_t origin)
{
mz_stream_passthru *passthru = (mz_stream_passthru *)stream;
return mz_stream_seek(passthru->stream.base, offset, origin);
}
int32_t mz_stream_passthru_close(void *stream)
{
return MZ_OK;
}
int32_t mz_stream_passthru_error(void *stream)
{
mz_stream_passthru *passthru = (mz_stream_passthru *)stream;
return mz_stream_error(passthru->stream.base);
}
int32_t mz_stream_passthru_get_prop_int64(void *stream, int32_t prop, int64_t *value)
{
mz_stream_passthru *passthru = (mz_stream_passthru *)stream;
return mz_stream_get_prop_int64(passthru->stream.base, prop, value);
}
int32_t mz_stream_passthru_set_prop_int64(void *stream, int32_t prop, int64_t value)
{
mz_stream_passthru *passthru = (mz_stream_passthru *)stream;
return mz_stream_set_prop_int64(passthru->stream.base, prop, value);
}
/***************************************************************************/
mz_stream_vtbl mz_stream_passthru_vtbl = {
mz_stream_passthru_open,
mz_stream_passthru_is_open,
mz_stream_passthru_read,
mz_stream_passthru_write,
mz_stream_passthru_tell,
mz_stream_passthru_seek,
mz_stream_passthru_close,
mz_stream_passthru_error,
mz_stream_passthru_create,
mz_stream_passthru_delete,
mz_stream_passthru_get_prop_int64,
mz_stream_passthru_set_prop_int64
};
/***************************************************************************/
void *mz_stream_passthru_create(void **stream)
{
mz_stream_passthru *passthru = NULL;
passthru = (mz_stream_passthru *)malloc(sizeof(mz_stream_passthru));
if (passthru != NULL)
{
memset(passthru, 0, sizeof(mz_stream_passthru));
passthru->stream.vtbl = &mz_stream_passthru_vtbl;
}
if (stream != NULL)
*stream = passthru;
return passthru;
}
void mz_stream_passthru_delete(void **stream)
{
mz_stream_passthru *passthru = NULL;
if (stream == NULL)
return;
passthru = (mz_stream_passthru *)*stream;
if (passthru != NULL)
free(passthru);
*stream = NULL;
}