1 files changed, 98 insertions, 0 deletions
diff --git a/lib/base/debuginfo.cpp b/lib/base/debuginfo.cpp
new file mode 100644
index 0000000..99006ac
--- /dev/null
+++ b/lib/base/debuginfo.cpp
@@ -0,0 +1,98 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "base/debuginfo.hpp"
+#include "base/convert.hpp"
+#include <fstream>
+
+using namespace icinga;
+
+/**
+ * Outputs a DebugInfo struct to a stream.
+ *
+ * @param out The output stream.
+ * @param val The DebugInfo struct.
+ * @returns The output stream.
+ */
+std::ostream& icinga::operator<<(std::ostream& out, const DebugInfo& val)
+{
+	out << "in " << val.Path << ": "
+		<< val.FirstLine << ":" << val.FirstColumn
+		<< "-"
+		<< val.LastLine << ":" << val.LastColumn;
+
+	return out;
+}
+
+DebugInfo icinga::DebugInfoRange(const DebugInfo& start, const DebugInfo& end)
+{
+	DebugInfo result;
+	result.Path = start.Path;
+	result.FirstLine = start.FirstLine;
+	result.FirstColumn = start.FirstColumn;
+	result.LastLine = end.LastLine;
+	result.LastColumn = end.LastColumn;
+	return result;
+}
+
+#define EXTRA_LINES 2
+
+void icinga::ShowCodeLocation(std::ostream& out, const DebugInfo& di, bool verbose)
+{
+	if (di.Path.IsEmpty())
+		return;
+
+	out << "Location: " << di;
+
+	std::ifstream ifs;
+	ifs.open(di.Path.CStr(), std::ifstream::in);
+
+	int lineno = 0;
+	char line[1024];
+
+	while (ifs.good() && lineno <= di.LastLine + EXTRA_LINES) {
+		if (lineno == 0)
+			out << "\n";
+
+		lineno++;
+
+		ifs.getline(line, sizeof(line));
+
+		for (int i = 0; line[i]; i++)
+			if (line[i] == '\t')
+				line[i] = ' ';
+
+		int extra_lines = verbose ? EXTRA_LINES : 0;
+
+		if (lineno < di.FirstLine - extra_lines || lineno > di.LastLine + extra_lines)
+			continue;
+
+		String pathInfo = di.Path + "(" + Convert::ToString(lineno) + "): ";
+		out << pathInfo;
+		out << line << "\n";
+
+		if (lineno >= di.FirstLine && lineno <= di.LastLine) {
+			int start, end;
+
+			start = 0;
+			end = strlen(line);
+
+			if (lineno == di.FirstLine)
+				start = di.FirstColumn - 1;
+
+			if (lineno == di.LastLine)
+				end = di.LastColumn;
+
+			if (start < 0) {
+				end -= start;
+				start = 0;
+			}
+
+			out << String(pathInfo.GetLength(), ' ');
+			out << String(start, ' ');
+			out << String(end - start, '^');
+
+			out << "\n";
+		}
+	}
+}
+