mirror of https://github.com/arendst/Tasmota.git
95 lines
3.2 KiB
Arduino
95 lines
3.2 KiB
Arduino
|
/*
|
||
|
|
xdrv_52_3_berry_unishox.ino - Berry scripting language, native fucnctions
|
||
|
|
|
||
|
|
Copyright (C) 2021 Stephan Hadinger, Berry language by Guan Wenliang https://github.com/Skiars/berry
|
||
|
|
|
||
|
|
This program is free software: you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation, either version 3 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef USE_BERRY
|
||
|
|
|
||
|
|
#include <berry.h>
|
||
|
|
|
||
|
|
#ifdef USE_UNISHOX_COMPRESSION
|
||
|
|
|
||
|
|
extern Unishox compressor;
|
||
|
|
|
||
|
|
/*********************************************************************************************\
|
||
|
|
* Native functions mapped to Berry functions
|
||
|
|
*
|
||
|
|
* import unishox
|
||
|
|
*
|
||
|
|
*
|
||
|
|
\*********************************************************************************************/
|
||
|
|
extern "C" {
|
||
|
|
|
||
|
|
int be_unishox_compress(bvm *vm);
|
||
|
|
int be_unishox_compress(bvm *vm) {
|
||
|
|
int32_t argc = be_top(vm); // Get the number of arguments
|
||
|
|
if (argc == 1 && be_isstring(vm, 1)) {
|
||
|
|
const char * s = be_tostring(vm, 1);
|
||
|
|
// do a dry-run to know the compressed size
|
||
|
|
int32_t compressed_size = compressor.unishox_compress(s, strlen(s), (char*) nullptr, 0);
|
||
|
|
if (compressed_size < 0) {
|
||
|
|
be_raise(vm, "internal_error", nullptr);
|
||
|
|
}
|
||
|
|
void * buf = be_pushbytes(vm, NULL, compressed_size);
|
||
|
|
if (compressed_size > 0) {
|
||
|
|
int32_t ret = compressor.unishox_compress(s, strlen(s), (char*) buf, compressed_size+5); // We expand by 4 the buffer size to avoid an error, but we are sure it will not overflow (see unishox implementation)
|
||
|
|
if (ret < 0 || ret != compressed_size) {
|
||
|
|
be_raisef(vm, "internal_error", "unishox size=%i ret=%i", compressed_size, ret);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
be_return(vm);
|
||
|
|
}
|
||
|
|
be_raise(vm, kTypeError, nullptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
int be_unishox_decompress(bvm *vm);
|
||
|
|
int be_unishox_decompress(bvm *vm) {
|
||
|
|
int32_t argc = be_top(vm); // Get the number of arguments
|
||
|
|
if (argc == 1 && be_isbytes(vm, 1)) {
|
||
|
|
size_t len;
|
||
|
|
const void * buf = be_tobytes(vm, 1, &len);
|
||
|
|
if (len == 0) {
|
||
|
|
be_pushstring(vm, "");
|
||
|
|
} else {
|
||
|
|
int32_t decomp_size = compressor.unishox_decompress((const char*)buf, len, (char*) nullptr, 0);
|
||
|
|
if (decomp_size < 0) {
|
||
|
|
be_raise(vm, "internal_error", nullptr);
|
||
|
|
}
|
||
|
|
if (decomp_size == 0) {
|
||
|
|
be_pushstring(vm, "");
|
||
|
|
} else {
|
||
|
|
void * buf_out = be_pushbuffer(vm, decomp_size);
|
||
|
|
int32_t ret = compressor.unishox_decompress((const char*)buf, len, (char*) buf_out, decomp_size);
|
||
|
|
if (ret < 0 || ret != decomp_size) {
|
||
|
|
be_raisef(vm, "internal_error", "unishox size=%i ret=%i", decomp_size, ret);
|
||
|
|
}
|
||
|
|
be_pushnstring(vm, (const char*) buf_out, decomp_size);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
be_return(vm);
|
||
|
|
}
|
||
|
|
be_raise(vm, kTypeError, nullptr);
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#endif // USE_UNISHOX_COMPRESSION
|
||
|
|
|
||
|
|
#endif // USE_BERRY
|