add add_timestamp utility

Makefile

@@ -36,7 +36,8 @@ LDFLAGS = $(LIB_EXPAT) $(LIB_PBF)
 PROGRAMS = \
     count_addresses \
     count \
-    osmgrep
+    osmgrep \
+    add_timestamp
 
 .PHONY: all clean
 
@@ -51,6 +52,9 @@ count: count.cpp
 osmgrep: osmgrep.cpp
 	$(CXX) $(CXXFLAGS) $(CXXFLAGS_LIBXML2) -o $@ $< $(LDFLAGS) $(LIB_XML2)
 
+add_timestamp: add_timestamp.cpp
+	$(CXX) $(CXXFLAGS) $(CXXFLAGS_LIBXML2) -o $@ $< $(LDFLAGS) $(LIB_XML2)
+
 clean:
 	rm -f *.o core $(PROGRAMS)
 

add_timestamp.cpp

@@ -0,0 +1,103 @@
+/*
+
+  Add a synthesized timestamp tag to all objects in the output file.
+
+  This makes little sense *except* if you are using some kind of 
+  OSM file processor that cannot use the timestamp attribute; 
+  using this program you can transform the timestamp attributo
+  into a proper tag which can then be used.
+
+  Written by Frederik Ramm <[email protected]>, public domain.
+
+*/
+
+#include <iostream>
+#include <getopt.h>
+
+#define OSMIUM_WITH_PBF_INPUT
+#define OSMIUM_WITH_XML_INPUT
+#include <osmium.hpp>
+#include <osmium/output/xml.hpp>
+#include <osmium/output/pbf.hpp>
+
+void print_help()
+{
+    std::cout << "add_timestamp <inputfile> <outputfile>\n\nadds a synthesized timestamp tag to all OSM objects.\n";
+}
+
+class AddTimestampHandler : public Osmium::Output::Handler
+{
+    public: 
+
+    AddTimestampHandler(Osmium::OSMFile& outfile) : Osmium::Output::Handler(outfile) 
+    {
+    }
+
+    void node(const shared_ptr<Osmium::OSM::Node >& node) 
+    { 
+        node->tags().add("timestamp", node->timestamp_as_string().c_str());
+        Osmium::Output::Handler::node(node);
+    }
+    void way(const shared_ptr<Osmium::OSM::Way >& way)
+    { 
+        way->tags().add("timestamp", way->timestamp_as_string().c_str());
+        Osmium::Output::Handler::way(way);
+    }
+    void relation(const shared_ptr<Osmium::OSM::Relation >& relation)
+    { 
+        relation->tags().add("timestamp", relation->timestamp_as_string().c_str());
+        Osmium::Output::Handler::relation(relation);
+    }
+};
+
+
+int main(int argc, char* argv[]) 
+{
+    static struct option long_options[] = 
+    {
+        {"help",        no_argument, 0, 'h'},
+        {0, 0, 0, 0}
+    };
+
+    std::string input_format;
+    std::string output_format;
+
+    while (true) 
+    {
+        int c = getopt_long(argc, argv, "h", long_options, 0);
+        if (c == -1) 
+        {
+            break;
+        }
+
+        switch (c) 
+        {
+            case 'h':
+                print_help();
+                exit(0);
+            default:
+                exit(1);
+        }
+    }
+
+    std::string input;
+    std::string output;
+    int remaining_args = argc - optind;
+    if (remaining_args != 2) 
+    {
+        print_help();
+        exit(1);
+    }
+
+    input =  argv[optind];
+    output = argv[optind+1];
+
+    Osmium::OSMFile infile(input);
+    Osmium::OSMFile outfile(output);
+
+    AddTimestampHandler ats(outfile);
+    ats.set_generator("add_timestamp");
+
+    Osmium::Input::read(infile, ats);
+}
+