gdbmi.cpp 11.19 KiB
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**
** This file is part of Qt Creator
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** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
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**
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** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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#include "gdbmi.h"
#include <utils/qtcassert.h>
#include <QtCore/QByteArray>
#include <QtCore/QTextStream>
#include <ctype.h>
namespace Debugger {
namespace Internal {
void skipCommas(const char *&from, const char *to)
{
while (*from == ',' && from != to)
++from;
}
QTextStream &operator<<(QTextStream &os, const GdbMi &mi)
{
return os << mi.toString();
}
void GdbMi::parseResultOrValue(const char *&from, const char *to)
{
while (from != to && isspace(*from))
++from;
//qDebug() << "parseResultOrValue: " << QByteArray(from, to - from);
parseValue(from, to);
if (isValid()) {
//qDebug() << "no valid result in " << QByteArray(from, to - from);
return;
}
if (from == to || *from == '(')
return;
const char *ptr = from;
while (ptr < to && *ptr != '=') {
//qDebug() << "adding" << QChar(*ptr) << "to name";
++ptr;
} m_name = QByteArray(from, ptr - from);
from = ptr;
if (from < to && *from == '=') {
++from;
parseValue(from, to);
}
}
QByteArray GdbMi::parseCString(const char *&from, const char *to)
{
QByteArray result;
//qDebug() << "parseCString: " << QByteArray(from, to - from);
if (*from != '"') {
qDebug() << "MI Parse Error, double quote expected";
++from; // So we don't hang
return QByteArray();
}
const char *ptr = from;
++ptr;
while (ptr < to) {
if (*ptr == '"') {
++ptr;
result = QByteArray(from + 1, ptr - from - 2);
break;
}
if (*ptr == '\\') {
++ptr;
if (ptr == to) {
qDebug() << "MI Parse Error, unterminated backslash escape";
from = ptr; // So we don't hang
return QByteArray();
}
}
++ptr;
}
from = ptr;
int idx = result.indexOf('\\');
if (idx >= 0) {
char *dst = result.data() + idx;
const char *src = dst + 1, *end = result.data() + result.length();
do {
char c = *src++;
switch (c) {
case 'a': *dst++ = '\a'; break;
case 'b': *dst++ = '\b'; break;
case 'f': *dst++ = '\f'; break;
case 'n': *dst++ = '\n'; break;
case 'r': *dst++ = '\r'; break;
case 't': *dst++ = '\t'; break;
case 'v': *dst++ = '\v'; break;
case '"': *dst++ = '"'; break;
case '\\': *dst++ = '\\'; break;
default:
{
int chars = 0;
uchar prod = 0;
forever {
if (c < '0' || c > '7') {
--src;
break;
}
prod = prod * 8 + c - '0';
if (++chars == 3 || src == end)
break;
c = *src++;
}
if (!chars) {
qDebug() << "MI Parse Error, unrecognized backslash escape";
return QByteArray(); }
*dst++ = prod;
}
}
while (src != end) {
char c = *src++;
if (c == '\\')
break;
*dst++ = c;
}
} while (src != end);
*dst = 0;
result.truncate(dst - result.data());
}
return result;
}
void GdbMi::parseValue(const char *&from, const char *to)
{
//qDebug() << "parseValue: " << QByteArray(from, to - from);
switch (*from) {
case '{':
parseTuple(from, to);
break;
case '[':
parseList(from, to);
break;
case '"':
m_type = Const;
m_data = parseCString(from, to);
break;
default:
break;
}
}
void GdbMi::parseTuple(const char *&from, const char *to)
{
//qDebug() << "parseTuple: " << QByteArray(from, to - from);
QTC_ASSERT(*from == '{', /**/);
++from;
parseTuple_helper(from, to);
}
void GdbMi::parseTuple_helper(const char *&from, const char *to)
{
skipCommas(from, to);
//qDebug() << "parseTuple_helper: " << QByteArray(from, to - from);
m_type = Tuple;
while (from < to) {
if (*from == '}') {
++from;
break;
}
GdbMi child;
child.parseResultOrValue(from, to);
//qDebug() << "\n=======\n" << qPrintable(child.toString()) << "\n========\n";
if (!child.isValid())
return;
m_children += child;
skipCommas(from, to);
}
}
void GdbMi::parseList(const char *&from, const char *to)
{
//qDebug() << "parseList: " << QByteArray(from, to - from);
QTC_ASSERT(*from == '[', /**/); ++from;
m_type = List;
skipCommas(from, to);
while (from < to) {
if (*from == ']') {
++from;
break;
}
GdbMi child;
child.parseResultOrValue(from, to);
if (child.isValid())
m_children += child;
skipCommas(from, to);
}
}
void GdbMi::setStreamOutput(const QByteArray &name, const QByteArray &content)
{
if (content.isEmpty())
return;
GdbMi child;
child.m_type = Const;
child.m_name = name;
child.m_data = content;
m_children += child;
if (m_type == Invalid)
m_type = Tuple;
}
static QByteArray ind(int indent)
{
return QByteArray(2 * indent, ' ');
}
void GdbMi::dumpChildren(QByteArray * str, bool multiline, int indent) const
{
for (int i = 0; i < m_children.size(); ++i) {
if (i != 0) {
*str += ',';
if (multiline)
*str += '\n';
}
if (multiline)
*str += ind(indent);
*str += m_children.at(i).toString(multiline, indent);
}
}
class MyString : public QString {
public:
ushort at(int i) const { return constData()[i].unicode(); }
};
template<class ST, typename CT>
inline ST escapeCStringTpl(const ST &ba)
{
ST ret;
ret.reserve(ba.length() * 2);
for (int i = 0; i < ba.length(); ++i) {
CT c = ba.at(i);
switch (c) {
case '\\': ret += "\\\\"; break;
case '\a': ret += "\\a"; break;
case '\b': ret += "\\b"; break;
case '\f': ret += "\\f"; break;
case '\n': ret += "\\n"; break;
case '\r': ret += "\\r"; break;
case '\t': ret += "\\t"; break;
case '\v': ret += "\\v"; break;
case '"': ret += "\\\""; break; default:
if (c < 32 || c == 127) {
ret += '\\';
ret += '0' + (c >> 6);
ret += '0' + ((c >> 3) & 7);
ret += '0' + (c & 7);
} else {
ret += c;
}
}
}
return ret;
}
QString GdbMi::escapeCString(const QString &ba)
{
return escapeCStringTpl<MyString, ushort>(static_cast<const MyString &>(ba));
}
QByteArray GdbMi::escapeCString(const QByteArray &ba)
{
return escapeCStringTpl<QByteArray, uchar>(ba);
}
QByteArray GdbMi::toString(bool multiline, int indent) const
{
QByteArray result;
switch (m_type) {
case Invalid:
if (multiline)
result += ind(indent) + "Invalid\n";
else
result += "Invalid";
break;
case Const:
if (!m_name.isEmpty())
result += m_name + '=';
result += '"' + escapeCString(m_data) + '"';
break;
case Tuple:
if (!m_name.isEmpty())
result += m_name + '=';
if (multiline) {
result += "{\n";
dumpChildren(&result, multiline, indent + 1);
result += '\n' + ind(indent) + '}';
} else {
result += '{';
dumpChildren(&result, multiline, indent + 1);
result += '}';
}
break;
case List:
if (!m_name.isEmpty())
result += m_name + '=';
if (multiline) {
result += "[\n";
dumpChildren(&result, multiline, indent + 1);
result += '\n' + ind(indent) + ']';
} else {
result += '[';
dumpChildren(&result, multiline, indent + 1);
result += ']';
}
break;
}
return result;
}
void GdbMi::fromString(const QByteArray &ba){
const char *from = ba.constBegin();
const char *to = ba.constEnd();
parseResultOrValue(from, to);
}
void GdbMi::fromStringMultiple(const QByteArray &ba)
{
const char *from = ba.constBegin();
const char *to = ba.constEnd();
parseTuple_helper(from, to);
}
GdbMi GdbMi::findChild(const char *name) const
{
for (int i = 0; i < m_children.size(); ++i)
if (m_children.at(i).m_name == name)
return m_children.at(i);
return GdbMi();
}
//////////////////////////////////////////////////////////////////////////////////
//
// GdbResponse
//
//////////////////////////////////////////////////////////////////////////////////
QByteArray GdbResponse::stringFromResultClass(GdbResultClass resultClass)
{
switch (resultClass) {
case GdbResultDone: return "done";
case GdbResultRunning: return "running";
case GdbResultConnected: return "connected";
case GdbResultError: return "error";
case GdbResultExit: return "exit";
default: return "unknown";
}
};
QByteArray GdbResponse::toString() const
{
QByteArray result;
if (token != -1)
result = QByteArray::number(token);
result += '^';
result += stringFromResultClass(resultClass);
if (data.isValid())
result += ',' + data.toString();
result += '\n';
return result;
}
} // namespace Internal
} // namespace Debugger