xapian-dump: Add support to unserialize values.

The interface for this is cheesy, (bare integer value numbers on the
command line indicating that unserialization is desired for those
value numbers). But this at least lets us print sup databases with
human-readable output for the date values.

1 files changed, 43 insertions, 3 deletions

diff --git a/xapian-dump.cc b/xapian-dump.cc
index 79a018d6..b28c274c 100644
--- a/xapian-dump.cc
+++ b/xapian-dump.cc
@@ -34,11 +34,14 @@
 
 #include <cstdlib>
 #include <iostream>
+#include <algorithm>
 
 #include <xapian.h>
 
 using namespace std;
 
+vector<int> UNSERIALIZE;
+
 static void
 print_document_terms (Xapian::Document doc)
 {
@@ -50,15 +53,43 @@ print_document_terms (Xapian::Document doc)
 	cout << "\t" << *i << endl;
 }
 
+static int
+vector_int_contains (vector<int> v, int i)
+{
+    vector<int>::iterator result;
+
+    result = find (v.begin(), v.end(), i);
+
+    return result != v.end();
+}
+
 static void
 print_document_values (Xapian::Document doc)
 {
     Xapian::ValueIterator i;
+    int value_no, value_int;
+    double value_float;
 
     printf ("Values:\n");
 
-    for (i = doc.values_begin (); i != doc.values_end (); i++)
-	cout << "\t" << i.get_valueno() << ": " << *i << endl;
+    for (i = doc.values_begin (); i != doc.values_end (); i++) {
+	value_no = i.get_valueno();
+
+	cout << "\t" << i.get_valueno() << ": ";
+
+	if (vector_int_contains (UNSERIALIZE, value_no)) {
+	    value_float = Xapian::sortable_unserialise (*i);
+	    value_int = value_float;
+	    if (value_int == value_float)
+		cout << value_int;
+	    else
+		cout << value_float;
+	} else {
+	    cout << *i;
+	}
+
+	cout << endl;
+    }
 }
 
 static void
@@ -79,15 +110,24 @@ int
 main (int argc, char *argv[])
 {
     const char *database_path;
+    int i;
 
     if (argc < 2) {
-	fprintf (stderr, "Usage: %s <path-to-xapian-database>\n",
+	fprintf (stderr, "Usage: %s <path-to-xapian-database> [value_nos...]\n",
 		 argv[0]);
+	fprintf (stderr, "Dumps data from the given database.\n");
+	fprintf (stderr, "The values corresponding to any value numbers given on the command line\n");
+	fprintf (stderr, "will be unserialized to an before being printed.\n");
 	exit (1);
     }
 
     database_path = argv[1];
 
+    UNSERIALIZE = vector<int> ();
+
+    for (i = 2; i < argc; i++)
+	UNSERIALIZE.push_back (atoi (argv[i]));
+
     try {
 
 	Xapian::Database db;