WIP on cache tools

caching/cache_dump.cc

@@ -1,18 +1,41 @@
+#include <fstream>
 #include <getopt.h>
 #include <libgen.h>
 #include <iostream>
 
 #include "version.h"
+#include "caching/xml_format.h"
 
 using namespace std;
+using namespace caching;
 
 //----------------------------------------------------------------
 
 namespace {
+	string const STDOUT_PATH("-");
+
+	bool want_stdout(string const &output) {
+		return output == STDOUT_PATH;
+	}
+
+	int dump_(string const &dev, ostream &out) {
+		emitter::ptr e = create_xml_emitter(out);
+		return 0;
+	}
+
+	int dump(string const &dev, string const &output) {
+		if (want_stdout(output)) {
+			ofstream out(output.c_str());
+			return dump_(dev, out);
+		} else
+			return dump_(dev, cout);
+	}
+
 	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;
 	}
 }
@@ -22,10 +45,12 @@ namespace {
 int main(int argc, char **argv)
 {
 	int c;
-	char const shortopts[] = "hV";
+	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'},
 		{ NULL, no_argument, NULL, 0 }
 	};
@@ -36,6 +61,10 @@ int main(int argc, char **argv)
 			usage(cout, basename(argv[0]));
 			return 0;
 
+		case 'o':
+			output = optarg;
+			break;
+
 		case 'V':
 			cout << THIN_PROVISIONING_TOOLS_VERSION << endl;
 			return 0;
@@ -46,15 +75,13 @@ int main(int argc, char **argv)
 		}
 	}
 
-#if 0
 	if (argc == optind) {
 		cerr << "No input file provided." << endl;
 		usage(cerr, basename(argv[0]));
 		return 1;
 	}
-#endif
 
-	return 0;
+	return dump(argv[optind], output);
 }
 
 //----------------------------------------------------------------