era_check, era_dump

era/era_dump.cc

@@ -0,0 +1,118 @@
+#include <fstream>
+#include <getopt.h>
+#include <libgen.h>
+#include <iostream>
+
+#include "version.h"
+#include "era/era_array.h"
+#include "era/bloom_tree.h"
+#include "era/metadata.h"
+#include "era/metadata_dump.h"
+#include "era/xml_format.h"
+#include "persistent-data/file_utils.h"
+
+using namespace era;
+using namespace std;
+
+//----------------------------------------------------------------
+
+namespace {
+	struct flags {
+		flags()
+			: repair_(false) {
+		}
+
+		bool repair_;
+	};
+
+	//--------------------------------
+
+	string const STDOUT_PATH("-");
+
+	bool want_stdout(string const &output) {
+		return output == STDOUT_PATH;
+	}
+
+	int dump(string const &dev, string const &output, flags const &fs) {
+		try {
+			block_manager<>::ptr bm = open_bm(dev, block_io<>::READ_ONLY);
+			metadata::ptr md(new metadata(bm, metadata::OPEN));
+
+			if (want_stdout(output)) {
+				emitter::ptr e = create_xml_emitter(cout);
+				metadata_dump(md, e, fs.repair_);
+			} else {
+				ofstream out(output.c_str());
+				emitter::ptr e = create_xml_emitter(out);
+				metadata_dump(md, e, fs.repair_);
+			}
+
+		} catch (std::exception &e) {
+			cerr << e.what() << endl;
+			return 1;
+		}
+
+		return 0;
+	}
+
+	void usage(ostream &out, string const &cmd) {
+		out << "Usage: " << cmd << " [options] {device|file}" << endl
+		    << "Options:" << endl
+		    << "  {-h|--help}" << endl
+		    << "  {-o <xml file>}" << endl
+		    << "  {-V|--version}" << endl
+		    << "  {--repair}" << endl;
+	}
+}
+
+//----------------------------------------------------------------
+
+int main(int argc, char **argv)
+{
+	int c;
+	flags fs;
+	string output("-");
+	char const shortopts[] = "ho:V";
+
+	option const longopts[] = {
+		{ "help", no_argument, NULL, 'h' },
+		{ "output", required_argument, NULL, 'o' },
+		{ "version", no_argument, NULL, 'V' },
+		{ "repair", no_argument, NULL, 1 },
+		{ NULL, no_argument, NULL, 0 }
+	};
+
+	while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) {
+		switch(c) {
+		case 1:
+			fs.repair_ = true;
+			break;
+
+		case 'h':
+			usage(cout, basename(argv[0]));
+			return 0;
+
+		case 'o':
+			output = optarg;
+			break;
+
+		case 'V':
+			cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
+			return 0;
+
+		default:
+			usage(cerr, basename(argv[0]));
+			return 1;
+		}
+	}
+
+	if (argc == optind) {
+		cerr << "No input file provided." << endl;
+		usage(cerr, basename(argv[0]));
+		return 1;
+	}
+
+	return dump(argv[optind], output, fs);
+}
+
+//----------------------------------------------------------------