mirror of https://github.com/Icinga/icinga2.git
115 lines
3.4 KiB
C++
115 lines
3.4 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2015 Icinga Development Team (http://www.icinga.org) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "base/debuginfo.hpp"
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#include "base/convert.hpp"
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#include <fstream>
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using namespace icinga;
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DebugInfo::DebugInfo(void)
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: FirstLine(0), FirstColumn(0), LastLine(0), LastColumn(0)
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{ }
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/**
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* Outputs a DebugInfo struct to a stream.
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*
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* @param out The output stream.
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* @param val The DebugInfo struct.
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* @returns The output stream.
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*/
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std::ostream& icinga::operator<<(std::ostream& out, const DebugInfo& val)
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{
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out << "in " << val.Path << ": "
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<< val.FirstLine << ":" << val.FirstColumn
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<< "-"
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<< val.LastLine << ":" << val.LastColumn;
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return out;
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}
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DebugInfo icinga::DebugInfoRange(const DebugInfo& start, const DebugInfo& end)
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{
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DebugInfo result;
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result.Path = start.Path;
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result.FirstLine = start.FirstLine;
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result.FirstColumn = start.FirstColumn;
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result.LastLine = end.LastLine;
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result.LastColumn = end.LastColumn;
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return result;
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}
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#define EXTRA_LINES 2
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void icinga::ShowCodeFragment(std::ostream& out, const DebugInfo& di, bool verbose)
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{
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if (di.Path.IsEmpty())
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return;
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std::ifstream ifs;
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ifs.open(di.Path.CStr(), std::ifstream::in);
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int lineno = 0;
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char line[1024];
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while (ifs.good() && lineno <= di.LastLine + EXTRA_LINES) {
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lineno++;
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ifs.getline(line, sizeof(line));
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for (int i = 0; line[i]; i++)
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if (line[i] == '\t')
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line[i] = ' ';
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int extra_lines = verbose ? EXTRA_LINES : 0;
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if (lineno < di.FirstLine - extra_lines || lineno > di.LastLine + extra_lines)
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continue;
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String pathInfo = di.Path + "(" + Convert::ToString(lineno) + "): ";
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out << pathInfo;
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out << line << "\n";
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if (lineno >= di.FirstLine && lineno <= di.LastLine) {
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int start, end;
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start = 0;
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end = strlen(line);
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if (lineno == di.FirstLine)
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start = di.FirstColumn - 1;
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if (lineno == di.LastLine)
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end = di.LastColumn;
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if (start < 0) {
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end -= start;
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start = 0;
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}
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out << String(pathInfo.GetLength(), ' ');
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out << String(start, ' ');
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out << String(end - start, '^');
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out << "\n";
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}
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}
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}
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