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Trk: Some minor code improvements

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This commit is contained in:
Robert Loehning
2009-10-13 19:11:30 +02:00
parent 1db44c0513
commit 885a425dd1
1 changed files with 11 additions and 11 deletions
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22
src/shared/trk/trkutils.cpp
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@@ -107,6 +107,7 @@ QByteArray frameMessage(byte command, byte token, const QByteArray &data, bool s
//logMessage("check: " << s << checksum << x; //logMessage("check: " << s << checksum << x;
QByteArray response; QByteArray response;
response.reserve(data.size() + 3);
response.append(char(command)); response.append(char(command));
response.append(char(token)); response.append(char(token));
response.append(data); response.append(data);
@@ -115,12 +116,12 @@ QByteArray frameMessage(byte command, byte token, const QByteArray &data, bool s
QByteArray encodedData = encode7d(response); QByteArray encodedData = encode7d(response);
QByteArray ba; QByteArray ba;
ba.reserve(encodedData.size() + 6);
if (serialFrame) { if (serialFrame) {
ba.append(char(0x01)); ba.append(char(0x01));
ba.append(char(0x90)); ba.append(char(0x90));
const ushort encodedSize = encodedData.size() + 2; // 2 x 0x7e const ushort encodedSize = encodedData.size() + 2; // 2 x 0x7e
ba.append(char(encodedSize / 256)); appendShort(&ba, encodedSize, BigEndian);
ba.append(char(encodedSize % 256));
} }
ba.append(char(0x7e)); ba.append(char(0x7e));
ba.append(encodedData); ba.append(encodedData);
@@ -227,7 +228,7 @@ QString quoteUnprintableLatin1(const QByteArray &ba)
QByteArray decode7d(const QByteArray &ba) QByteArray decode7d(const QByteArray &ba)
{ {
QByteArray res; QByteArray res;
res.reserve(ba.size() + 2); res.reserve(ba.size());
for (int i = 0; i < ba.size(); ++i) { for (int i = 0; i < ba.size(); ++i) {
byte c = byte(ba.at(i)); byte c = byte(ba.at(i));
if (c == 0x7d) { if (c == 0x7d) {
@@ -279,10 +280,11 @@ void appendShort(QByteArray *ba, ushort s, Endianness endian)
void appendInt(QByteArray *ba, uint i, Endianness endian) void appendInt(QByteArray *ba, uint i, Endianness endian)
{ {
int b3 = i % 256; i -= b3; i /= 256; const uchar b3 = i % 256; i /= 256;
int b2 = i % 256; i -= b2; i /= 256; const uchar b2 = i % 256; i /= 256;
int b1 = i % 256; i -= b1; i /= 256; const uchar b1 = i % 256; i /= 256;
int b0 = i % 256; i -= b0; i /= 256; const uchar b0 = i;
ba->reserve(ba->size() + 4);
if (endian == BigEndian) { if (endian == BigEndian) {
ba->append(b0); ba->append(b0);
ba->append(b1); ba->append(b1);
@@ -298,11 +300,9 @@ void appendInt(QByteArray *ba, uint i, Endianness endian)
void appendString(QByteArray *ba, const QByteArray &str, Endianness endian, bool appendNullTerminator) void appendString(QByteArray *ba, const QByteArray &str, Endianness endian, bool appendNullTerminator)
{ {
const int n = str.size(); const int fullSize = str.size() + (appendNullTerminator ? 1 : 0);
const int fullSize = n + (appendNullTerminator ? 1 : 0);
appendShort(ba, fullSize, endian); // count the terminating \0 appendShort(ba, fullSize, endian); // count the terminating \0
for (int i = 0; i != n; ++i) ba->append(str);
ba->append(str.at(i));
if (appendNullTerminator) if (appendNullTerminator)
ba->append('\0'); ba->append('\0');
} }