// Copyright (C) 2018 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include <QCborStreamReader>
#include <QCommandLineParser>
#include <QCommandLineOption>
#include <QCoreApplication>
#include <QFile>
#include <QLocale>
#include <QStack>
#include <locale.h>
#include <math.h>
#include <stdarg.h>
#include <stdio.h>
using namespace Qt::StringLiterals;
/*
* To regenerate:
* curl -O https://www.iana.org/assignments/cbor-tags/cbor-tags.xml
* ./cbortag.py cbor-tags.xml
*
* The XHTML URL mentioned in the comment below is a human-readable version of
* the same resource.
*/
// GENERATED CODE
struct CborTagDescription
{
QCborTag tag;
const char *description; // with space and parentheses
};
// Concise Binary Object Representation (CBOR) Tags
static const CborTagDescription tagDescriptions[] = {
// from https://www.iana.org/assignments/cbor-tags/cbor-tags.xhtml
{ QCborTag(0), " (Standard date/time string; see Section 3.4.1 [RFC8949])" },
{ QCborTag(1), " (Epoch-based date/time; see Section 3.4.2 [RFC8949])" },
{ QCborTag(2), " (Positive bignum; see Section 3.4.3 [RFC8949])" },
{ QCborTag(3), " (Negative bignum; see Section 3.4.3 [RFC8949])" },
{ QCborTag(4), " (Decimal fraction; see Section 3.4.4 [RFC8949])" },
{ QCborTag(5), " (Bigfloat; see Section 3.4.4 [RFC8949])" },
{ QCborTag(16), " (COSE Single Recipient Encrypted Data Object [RFC9052])" },
{ QCborTag(17), " (COSE Mac w/o Recipients Object [RFC9052])" },
{ QCborTag(18), " (COSE Single Signer Data Object [RFC9052])" },
{ QCborTag(19), " (COSE standalone V2 countersignature [RFC9338])" },
{ QCborTag(21),
" (Expected conversion to base64url encoding; see Section 3.4.5.2 [RFC8949])" },
{ QCborTag(22), " (Expected conversion to base64 encoding; see Section 3.4.5.2 [RFC8949])" },
{ QCborTag(23), " (Expected conversion to base16 encoding; see Section 3.4.5.2 [RFC8949])" },
{ QCborTag(24), " (Encoded CBOR data item; see Section 3.4.5.1 [RFC8949])" },
{ QCborTag(25), " (reference the nth previously seen string)" },
{ QCborTag(26), " (Serialised Perl object with classname and constructor arguments)" },
{ QCborTag(27),
" (Serialised language-independent object with type name and constructor arguments)" },
{ QCborTag(28), " (mark value as (potentially) shared)" },
{ QCborTag(29), " (reference nth marked value)" },
{ QCborTag(30), " (Rational number)" },
{ QCborTag(31), " (Absent value in a CBOR Array)" },
{ QCborTag(32), " (URI; see Section 3.4.5.3 [RFC8949])" },
{ QCborTag(33), " (base64url; see Section 3.4.5.3 [RFC8949])" },
{ QCborTag(34), " (base64; see Section 3.4.5.3 [RFC8949])" },
{ QCborTag(35), " (Regular expression; see Section 2.4.4.3 [RFC7049])" },
{ QCborTag(36), " (MIME message; see Section 3.4.5.3 [RFC8949])" },
{ QCborTag(37), " (Binary UUID [RFC4122, Section 4.1.2])" },
{ QCborTag(38), " (Language-tagged string [RFC9290, Appendix A])" },
{ QCborTag(39), " (Identifier)" },
{ QCborTag(40), " (Multi-dimensional Array, row-major order [RFC8746])" },
{ QCborTag(41), " (Homogeneous Array [RFC8746])" },
{ QCborTag(42), " (IPLD content identifier)" },
{ QCborTag(43), " (YANG bits datatype; see Section 6.7. [RFC9254])" },
{ QCborTag(44), " (YANG enumeration datatype; see Section 6.6. [RFC9254])" },
{ QCborTag(45), " (YANG identityref datatype; see Section 6.10. [RFC9254])" },
{ QCborTag(46), " (YANG instance-identifier datatype; see Section 6.13. [RFC9254])" },
{ QCborTag(47), " (YANG Schema Item iDentifier (sid); see Section 3.2. [RFC9254])" },
{ QCborTag(52), " (IPv4, [prefixlen,IPv4], [IPv4,prefixpart] [RFC9164])" },
{ QCborTag(54), " (IPv6, [prefixlen,IPv6], [IPv6,prefixpart] [RFC9164])" },
{ QCborTag(61), " (CBOR Web Token (CWT) [RFC8392])" },
{ QCborTag(63), " (Encoded CBOR Sequence [RFC8742])" },
{ QCborTag(64), " (uint8 Typed Array [RFC8746])" },
{ QCborTag(65), " (uint16, big endian, Typed Array [RFC8746])" },
{ QCborTag(66), " (uint32, big endian, Typed Array [RFC8746])" },
{ QCborTag(67), " (uint64, big endian, Typed Array [RFC8746])" },
{ QCborTag(68), " (uint8 Typed Array, clamped arithmetic [RFC8746])" },
{ QCborTag(69), " (uint16, little endian, Typed Array [RFC8746])" },
{ QCborTag(70), " (uint32, little endian, Typed Array [RFC8746])" },
{ QCborTag(71), " (uint64, little endian, Typed Array [RFC8746])" },
{ QCborTag(72), " (sint8 Typed Array [RFC8746])" },
{ QCborTag(73), " (sint16, big endian, Typed Array [RFC8746])" },
{ QCborTag(74), " (sint32, big endian, Typed Array [RFC8746])" },
{ QCborTag(75), " (sint64, big endian, Typed Array [RFC8746])" },
{ QCborTag(76), " ((reserved) [RFC8746])" },
{ QCborTag(77), " (sint16, little endian, Typed Array [RFC8746])" },
{ QCborTag(78), " (sint32, little endian, Typed Array [RFC8746])" },
{ QCborTag(79), " (sint64, little endian, Typed Array [RFC8746])" },
{ QCborTag(80), " (IEEE 754 binary16, big endian, Typed Array [RFC8746])" },
{ QCborTag(81), " (IEEE 754 binary32, big endian, Typed Array [RFC8746])" },
{ QCborTag(82), " (IEEE 754 binary64, big endian, Typed Array [RFC8746])" },
{ QCborTag(83), " (IEEE 754 binary128, big endian, Typed Array [RFC8746])" },
{ QCborTag(84), " (IEEE 754 binary16, little endian, Typed Array [RFC8746])" },
{ QCborTag(85), " (IEEE 754 binary32, little endian, Typed Array [RFC8746])" },
{ QCborTag(86), " (IEEE 754 binary64, little endian, Typed Array [RFC8746])" },
{ QCborTag(87), " (IEEE 754 binary128, little endian, Typed Array [RFC8746])" },
{ QCborTag(96), " (COSE Encrypted Data Object [RFC9052])" },
{ QCborTag(97), " (COSE MACed Data Object [RFC9052])" },
{ QCborTag(98), " (COSE Signed Data Object [RFC9052])" },
{ QCborTag(100), " (Number of days since the epoch date 1970-01-01 [RFC8943])" },
{ QCborTag(101), " (alternatives as given by the uint + 128; see Section 9.1)" },
{ QCborTag(103), " (Geographic Coordinates)" },
{ QCborTag(104), " (Geographic Coordinate Reference System WKT or EPSG number)" },
{ QCborTag(110), " (relative object identifier (BER encoding); SDNV sequence [RFC9090])" },
{ QCborTag(111), " (object identifier (BER encoding) [RFC9090])" },
{ QCborTag(112), " (object identifier (BER encoding), relative to 1.3.6.1.4.1 [RFC9090])" },
{ QCborTag(120), " (Internet of Things Data Point)" },
{ QCborTag(260),
" (Network Address (IPv4 or IPv6 or MAC Address) (DEPRECATED in favor of 52 and 54 for IP"
" addresses) [RFC9164])" },
{ QCborTag(261),
" (Network Address Prefix (IPv4 or IPv6 Address + Mask Length) (DEPRECATED in favor of 52"
" and 54 for IP addresses) [RFC9164])" },
{ QCborTag(271),
" (DDoS Open Threat Signaling (DOTS) signal channel object, as defined in [RFC9132])" },
{ QCborTag(1004), " (full-date string [RFC8943])" },
{ QCborTag(1040), " (Multi-dimensional Array, column-major order [RFC8746])" },
{ QCborTag(55799), " (Self-described CBOR; see Section 3.4.6 [RFC8949])" },
{ QCborTag(55800), " (indicates that the file contains CBOR Sequences [RFC9277])" },
{ QCborTag(55801),
" (indicates that the file starts with a CBOR-Labeled Non-CBOR Data label. [RFC9277])" },
{ QCborTag(-1), nullptr }
};
// END GENERATED CODE
enum {
// See RFC 7049 section 2.
SmallValueBitLength = 5,
SmallValueMask = (1 << SmallValueBitLength) - 1, /* 0x1f */
Value8Bit = 24,
Value16Bit = 25,
Value32Bit = 26,
Value64Bit = 27
};
//! [0]
struct CborDumper
{
enum DumpOption { ShowCompact = 0x01, ShowWidthIndicators = 0x02, ShowAnnotated = 0x04 };
Q_DECLARE_FLAGS(DumpOptions, DumpOption)
CborDumper(QFile *f, DumpOptions opts_);
QCborError dump();
private:
void dumpOne(int nestingLevel);
void dumpOneDetailed(int nestingLevel);
void printByteArray(const QByteArray &ba);
void printWidthIndicator(quint64 value, char space = '\0');
void printStringWidthIndicator(quint64 value);
QCborStreamReader reader;
QByteArray data;
QStack<quint8> byteArrayEncoding;
qint64 offset = 0;
DumpOptions opts;
};
//! [0]
Q_DECLARE_OPERATORS_FOR_FLAGS(CborDumper::DumpOptions)
static int cborNumberSize(quint64 value)
{
int normalSize = 1;
if (value > std::numeric_limits<quint32>::max())
normalSize += 8;
else if (value > std::numeric_limits<quint16>::max())
normalSize += 4;
else if (value > std::numeric_limits<quint8>::max())
normalSize += 2;
else if (value >= Value8Bit)
normalSize += 1;
return normalSize;
}
CborDumper::CborDumper(QFile *f, DumpOptions opts_) : opts(opts_)
{
// try to mmap the file, this is faster
char *ptr = reinterpret_cast<char *>(f->map(0, f->size(), QFile::MapPrivateOption));
if (ptr) {
// worked
data = QByteArray::fromRawData(ptr, f->size());
reader.addData(data);
} else if ((opts & ShowAnnotated) || f->isSequential()) {
// details requires full contents, so allocate memory
data = f->readAll();
reader.addData(data);
} else {
// just use the QIODevice
reader.setDevice(f);
}
}
QCborError CborDumper::dump()
{
byteArrayEncoding << quint8(QCborKnownTags::ExpectedBase16);
if (!reader.lastError()) {
if (opts & ShowAnnotated)
dumpOneDetailed(0);
else
dumpOne(0);
}
QCborError err = reader.lastError();
offset = reader.currentOffset();
if (err) {
fflush(stdout);
fprintf(stderr, "cbordump: decoding failed at %lld: %s\n",
offset, qPrintable(err.toString()));
if (!data.isEmpty())
fprintf(stderr, " bytes at %lld: %s\n", offset,
data.mid(offset, 9).toHex(' ').constData());
} else {
if (!opts.testFlag(ShowAnnotated))
printf("\n");
if (offset < data.size() || (reader.device() && reader.device()->bytesAvailable()))
fprintf(stderr, "Warning: bytes remaining at the end of the CBOR stream\n");
}
return err;
}
template<typename T>
static inline bool canConvertTo(double v)
{
using TypeInfo = std::numeric_limits<T>;
// The [conv.fpint] (7.10 Floating-integral conversions) section of the
// standard says only exact conversions are guaranteed. Converting
// integrals to floating-point with loss of precision has implementation-
// defined behavior whether the next higher or next lower is returned;
// converting FP to integral is UB if it can't be represented.;
static_assert(TypeInfo::is_integer);
double supremum = ldexp(1, TypeInfo::digits);
if (v >= supremum)
return false;
if (v < TypeInfo::min()) // either zero or a power of two, so it's exact
return false;
// we're in range
return v == floor(v);
}
static QString fpToString(double v, QLatin1StringView suffix = ""_L1)
{
if (qIsInf(v))
return v < 0 ? "-inf"_L1 : "inf"_L1;
if (qIsNaN(v))
return "nan"_L1;
if (canConvertTo<qint64>(v))
return QString::number(qint64(v)) + ".0"_L1 + suffix;
if (canConvertTo<quint64>(v))
return QString::number(quint64(v)) + ".0"_L1 + suffix;
QString s = QString::number(v, 'g', QLocale::FloatingPointShortest);
if (!s.contains(u'.') && !s.contains(u'e'))
s += u'.';
if (suffix.size())
s += suffix;
return s;
};
void CborDumper::dumpOne(int nestingLevel)
{
QString indent(1, u' ');
QString indented = indent;
if (!opts.testFlag(ShowCompact)) {
indent = u'\n' + QString(4 * nestingLevel, u' ');
indented = u'\n' + QString(4 + 4 * nestingLevel, u' ');
}
switch (reader.type()) {
case QCborStreamReader::UnsignedInteger: {
quint64 u = reader.toUnsignedInteger();
printf("%llu", u);
reader.next();
printWidthIndicator(u);
return;
}
case QCborStreamReader::NegativeInteger: {
quint64 n = quint64(reader.toNegativeInteger());
if (n == 0) // -2^64 (wrapped around)
printf("-18446744073709551616");
else
printf("-%llu", n);
reader.next();
printWidthIndicator(n);
return;
}
case QCborStreamReader::ByteArray:
case QCborStreamReader::String: {
bool isLengthKnown = reader.isLengthKnown();
if (!isLengthKnown) {
printf("(_ ");
++offset;
}
QString comma;
if (reader.isByteArray()) {
auto r = reader.readByteArray();
while (r.status == QCborStreamReader::Ok) {
printf("%s", qPrintable(comma));
printByteArray(r.data);
printStringWidthIndicator(r.data.size());
r = reader.readByteArray();
comma = u',' + indented;
}
} else {
auto r = reader.readString();
while (r.status == QCborStreamReader::Ok) {
printf("%s\"%s\"", qPrintable(comma), qPrintable(r.data));
printStringWidthIndicator(r.data.toUtf8().size());
r = reader.readString();
comma = u',' + indented;
}
}
if (!isLengthKnown && !reader.lastError())
printf(")");
break;
}
case QCborStreamReader::Array:
case QCborStreamReader::Map: {
const char *delimiters = (reader.isArray() ? "[]" : "{}");
printf("%c", delimiters[0]);
if (reader.isLengthKnown()) {
quint64 len = reader.length();
reader.enterContainer();
printWidthIndicator(len, ' ');
} else {
reader.enterContainer();
offset = reader.currentOffset();
printf("_ ");
}
const char *comma = "";
while (!reader.lastError() && reader.hasNext()) {
printf("%s%s", comma, qPrintable(indented));
comma = ",";
dumpOne(nestingLevel + 1);
if (reader.parentContainerType() != QCborStreamReader::Map)
continue;
if (reader.lastError())
break;
printf(": ");
dumpOne(nestingLevel + 1);
}
if (!reader.lastError()) {
reader.leaveContainer();
printf("%s%c", qPrintable(indent), delimiters[1]);
}
break;
}
case QCborStreamReader::Tag: {
QCborTag tag = reader.toTag();
printf("%llu", quint64(tag));
if (tag == QCborKnownTags::ExpectedBase16 || tag == QCborKnownTags::ExpectedBase64
|| tag == QCborKnownTags::ExpectedBase64url)
byteArrayEncoding.push(quint8(tag));
if (reader.next()) {
printWidthIndicator(quint64(tag));
printf("(");
dumpOne(nestingLevel); // same level!
printf(")");
}
if (tag == QCborKnownTags::ExpectedBase16 || tag == QCborKnownTags::ExpectedBase64
|| tag == QCborKnownTags::ExpectedBase64url)
byteArrayEncoding.pop();
break;
}
case QCborStreamReader::SimpleType:
switch (reader.toSimpleType()) {
case QCborSimpleType::False:
printf("false");
break;
case QCborSimpleType::True:
printf("true");
break;
case QCborSimpleType::Null:
printf("null");
break;
case QCborSimpleType::Undefined:
printf("undefined");
break;
default:
printf("simple(%u)", quint8(reader.toSimpleType()));
break;
}
reader.next();
break;
case QCborStreamReader::Float16:
printf("%s", qPrintable(fpToString(reader.toFloat16(), "f16"_L1)));
reader.next();
break;
case QCborStreamReader::Float:
printf("%s", qPrintable(fpToString(reader.toFloat(), "f"_L1)));
reader.next();
break;
case QCborStreamReader::Double:
printf("%s", qPrintable(fpToString(reader.toDouble())));
reader.next();
break;
case QCborStreamReader::Invalid:
return;
}
offset = reader.currentOffset();
}
void CborDumper::dumpOneDetailed(int nestingLevel)
{
auto tagDescription = [](QCborTag tag) {
for (auto entry : tagDescriptions) {
if (entry.tag == tag)
return entry.description;
if (entry.tag > tag)
break;
}
return "";
};
auto printOverlong = [](int actualSize, quint64 value) {
if (cborNumberSize(value) != actualSize)
printf(" (overlong)");
};
auto print = [=](const char *descr, const char *fmt, ...) {
qint64 prevOffset = offset;
offset = reader.currentOffset();
if (prevOffset == offset)
return;
QByteArray bytes = data.mid(prevOffset, offset - prevOffset);
QByteArray indent(nestingLevel * 2, ' ');
printf("%-50s # %s ", (indent + bytes.toHex(' ')).constData(), descr);
va_list va;
va_start(va, fmt);
vprintf(fmt, va);
va_end(va);
if (strstr(fmt, "%ll")) {
// Only works because all callers below that use %ll, use it as the
// first arg
va_start(va, fmt);
quint64 value = va_arg(va, quint64);
va_end(va);
printOverlong(bytes.size(), value);
}
puts("");
};
auto printFp = [=](const char *descr, double d) {
QString s = fpToString(d);
if (s.size() <= 6)
return print(descr, "%s", qPrintable(s));
return print(descr, "%a", d);
};
auto printString = [=](const char *descr) {
constexpr qsizetype ChunkSizeLimit = std::numeric_limits<int>::max();
QByteArray indent(nestingLevel * 2, ' ');
const char *chunkStr = (reader.isLengthKnown() ? "" : "chunk ");
int width = 48 - indent.size();
int bytesPerLine = qMax(width / 3, 5);
qsizetype size = reader.currentStringChunkSize();
if (size < 0)
return; // error
if (size >= ChunkSizeLimit) {
fprintf(stderr, "String length too big, %lli\n", qint64(size));
exit(EXIT_FAILURE);
}
// if asking for the current string chunk changes the offset, then it
// was chunked
print(descr, "(indeterminate length)");
QByteArray bytes(size, Qt::Uninitialized);
auto r = reader.readStringChunk(bytes.data(), bytes.size());
while (r.status == QCborStreamReader::Ok) {
// We'll have to decode the length's width directly from CBOR...
const char *lenstart = data.constData() + offset;
const char *lenend = lenstart + 1;
quint8 additionalInformation = (*lenstart & SmallValueMask);
// Decode this number directly from CBOR (see RFC 7049 section 2)
if (additionalInformation >= Value8Bit) {
if (additionalInformation == Value8Bit)
lenend += 1;
else if (additionalInformation == Value16Bit)
lenend += 2;
else if (additionalInformation == Value32Bit)
lenend += 4;
else
lenend += 8;
}
{
QByteArray lenbytes = QByteArray::fromRawData(lenstart, lenend - lenstart);
printf("%-50s # %s %slength %llu",
(indent + lenbytes.toHex(' ')).constData(), descr, chunkStr, quint64(size));
printOverlong(lenbytes.size(), size);
puts("");
}
offset = reader.currentOffset();
for (int i = 0; i < r.data; i += bytesPerLine) {
QByteArray section = bytes.mid(i, bytesPerLine);
printf(" %s%s", indent.constData(), section.toHex(' ').constData());
// print the decode
QByteArray spaces(width > 0 ? width - section.size() * 3 + 1 : 0, ' ');
printf("%s # \"", spaces.constData());
auto ptr = reinterpret_cast<const uchar *>(section.constData());
for (int j = 0; j < section.size(); ++j)
printf("%c", ptr[j] >= 0x80 || ptr[j] < 0x20 ? '.' : ptr[j]);
puts("\"");
}
// get the next chunk
size = reader.currentStringChunkSize();
if (size < 0)
return; // error
if (size >= ChunkSizeLimit) {
fprintf(stderr, "String length too big, %lli\n", qint64(size));
exit(EXIT_FAILURE);
}
bytes.resize(size);
r = reader.readStringChunk(bytes.data(), bytes.size());
}
};
if (reader.lastError())
return;
switch (reader.type()) {
case QCborStreamReader::UnsignedInteger: {
quint64 u = reader.toUnsignedInteger();
reader.next();
if (u < 65536 || (u % 100000) == 0)
print("Unsigned integer", "%llu", u);
else
print("Unsigned integer", "0x%llx", u);
return;
}
case QCborStreamReader::NegativeInteger: {
quint64 n = quint64(reader.toNegativeInteger());
reader.next();
print("Negative integer", n == 0 ? "-18446744073709551616" : "-%llu", n);
return;
}
case QCborStreamReader::ByteArray:
case QCborStreamReader::String: {
bool isLengthKnown = reader.isLengthKnown();
const char *descr = (reader.isString() ? "Text string" : "Byte string");
if (!isLengthKnown)
++nestingLevel;
printString(descr);
if (reader.lastError())
return;
if (!isLengthKnown) {
--nestingLevel;
print("Break", "");
}
break;
}
case QCborStreamReader::Array:
case QCborStreamReader::Map: {
const char *descr = (reader.isArray() ? "Array" : "Map");
if (reader.isLengthKnown()) {
quint64 len = reader.length();
reader.enterContainer();
print(descr, "length %llu", len);
} else {
reader.enterContainer();
print(descr, "(indeterminate length)");
}
while (!reader.lastError() && reader.hasNext())
dumpOneDetailed(nestingLevel + 1);
if (!reader.lastError()) {
reader.leaveContainer();
print("Break", "");
}
break;
}
case QCborStreamReader::Tag: {
QCborTag tag = reader.toTag();
reader.next();
print("Tag", "%llu%s", quint64(tag), tagDescription(tag));
dumpOneDetailed(nestingLevel + 1);
break;
}
case QCborStreamReader::SimpleType: {
QCborSimpleType st = reader.toSimpleType();
reader.next();
switch (st) {
case QCborSimpleType::False:
print("Simple Type", "false");
break;
case QCborSimpleType::True:
print("Simple Type", "true");
break;
case QCborSimpleType::Null:
print("Simple Type", "null");
break;
case QCborSimpleType::Undefined:
print("Simple Type", "undefined");
break;
default:
print("Simple Type", "%u", quint8(st));
break;
}
break;
}
case QCborStreamReader::Float16: {
double d = reader.toFloat16();
reader.next();
printFp("Float16", d);
break;
}
case QCborStreamReader::Float: {
double d = reader.toFloat();
reader.next();
printFp("Float", d);
break;
}
case QCborStreamReader::Double: {
double d = reader.toDouble();
reader.next();
printFp("Double", d);
break;
}
case QCborStreamReader::Invalid:
return;
}
offset = reader.currentOffset();
}
void CborDumper::printByteArray(const QByteArray &ba)
{
switch (byteArrayEncoding.top()) {
default:
printf("h'%s'", ba.toHex(' ').constData());
break;
case quint8(QCborKnownTags::ExpectedBase64):
printf("b64'%s'", ba.toBase64().constData());
break;
case quint8(QCborKnownTags::ExpectedBase64url):
printf("b64'%s'",
ba.toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals)
.constData());
break;
}
}
void printIndicator(quint64 value, qint64 previousOffset, qint64 offset, char space)
{
int normalSize = cborNumberSize(value);
int actualSize = offset - previousOffset;
if (actualSize != normalSize) {
Q_ASSERT(actualSize > 1);
actualSize -= 2;
printf("_%d", qPopulationCount(uint(actualSize)));
if (space)
printf("%c", space);
}
}
void CborDumper::printWidthIndicator(quint64 value, char space)
{
qint64 previousOffset = offset;
offset = reader.currentOffset();
if (opts & ShowWidthIndicators)
printIndicator(value, previousOffset, offset, space);
}
void CborDumper::printStringWidthIndicator(quint64 value)
{
qint64 previousOffset = offset;
offset = reader.currentOffset();
if (opts & ShowWidthIndicators)
printIndicator(value, previousOffset, offset - uint(value), '\0');
}
int main(int argc, char *argv[])
{
QCoreApplication app(argc, argv);
setlocale(LC_ALL, "C");
QCommandLineParser parser;
parser.setApplicationDescription("CBOR Dumper tool"_L1);
parser.addHelpOption();
QCommandLineOption compact({"c"_L1, "compact"_L1}, "Use compact form (no line breaks)"_L1);
parser.addOption(compact);
QCommandLineOption showIndicators({ "i"_L1, "indicators"_L1 },
"Show indicators for width of lengths and integrals"_L1);
parser.addOption(showIndicators);
QCommandLineOption verbose({"a"_L1, "annotated"_L1}, "Show bytes and annotated decoding"_L1);
parser.addOption(verbose);
parser.addPositionalArgument("[source]"_L1, "CBOR file to read from"_L1);
parser.process(app);
CborDumper::DumpOptions opts;
if (parser.isSet(compact))
opts |= CborDumper::ShowCompact;
if (parser.isSet(showIndicators))
opts |= CborDumper::ShowWidthIndicators;
if (parser.isSet(verbose))
opts |= CborDumper::ShowAnnotated;
QStringList files = parser.positionalArguments();
if (files.isEmpty())
files << "-";
for (const QString &file : std::as_const(files)) {
QFile f(file);
if (file == "-" ? f.open(stdin, QIODevice::ReadOnly) : f.open(QIODevice::ReadOnly)) {
if (files.size() > 1)
printf("/ From \"%s\" /\n", qPrintable(file));
CborDumper dumper(&f, opts);
QCborError err = dumper.dump();
if (err)
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}