MOBILISIS-Calculator/main/terminal_utils.cpp

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#include "terminal_utils.h"
#include <atomic>
#include <cstring>
#include <endian.h>
#include <QString>
#include <QByteArray>
#include <QDebug>
namespace TU {
char const *terminalStatus(uint8_t status) {
switch (status) {
case TERMINAL_CB2_KEYS_NOT_PRESENT:
return "CB2 KEYS NOT PRESENT";
case TERMINAL_NO_BANKING_PARAMETERS_PRESENT:
return "NO BANKING PARAMETERS PRESENT";
case TERMINAL_IS_BLOCKED:
return "TERMINAL IS BLOCKED";
case TERMINAL_NOT_OPERATIVE:
return "TERMINAL NOT OPERATIVE";
case TERMINAL_IS_READY_AND_ACTIVE:
return "TERMINAL IS READY AND ACTIVE";
case TERMINAL_IS_READY_AND_NOT_ACTIVE:
return "TERMINAL IS READY AND *NOT* ACTIVE";
case TERMINAL_LOG_FULL:
return "TERMINAL LOG IS FULL";
default:
return "";
}
}
QByteArray int2Hex(int i) {
return QByteArray::fromHex(
QString().setNum(i, 16).toLocal8Bit().constData()).toHex();
}
uint16_t getNextTransactionId() {
static std::atomic<int> i{0};
int j = 0;
while ((j = (++i % 100)) == 0); // 1 <= j <= 99
return htobe16(((j / 10) + 0x30) << 8) | ((j % 10) + 0x30);
}
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uint32_t crc32(uint32_t crc, unsigned char* pData, size_t len) {
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qCritical() << "updateCRC" << QByteArray((char *)pData, len).toHex();
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int i = 0;
int j = 0;
unsigned char ucCarry = 0x00;
crc = ~crc;
while (len > 0) {
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uint32_t const c = pData[i];
crc ^= c;
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++i;
for (j = 0; j < 8; ++j) {
ucCarry = crc & 1;
crc >>= 1;
if (ucCarry) {
crc ^= 0xedb88320;
}
}
--len;
}
return ~crc;
}
uint32_t crc32(QByteArray const &ba) {
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uint32_t crc = 0;
return crc32(crc, (uint8_t *)ba.data(), ba.size());
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}
char lrc(QByteArray const &ba) {
char crc = 0;
for (int i = 0; i < ba.size(); ++i) {
crc ^= ba[i];
}
return crc;
}
bool isBigEndian() {
union {
uint32_t i;
char c[4];
} bint = {0x01020304};
return bint.c[0] == 1;
}
}