Rearranged the code a bit, breaking walk.cc into several different files:

  compare         compare_items<T>
  handler         item_handler<T>
  iterators       used to iterators sets of journal objects
  filters         derived from item_handler, they morph the result set
  output          derived from item_handler, these do the printing

Also, created a new 'help' files which contains just Ledger's help text.

1 files changed, 85 insertions, 0 deletions

diff --git a/compare.cc b/compare.cc
new file mode 100644
index 00000000..1cbe7082
--- /dev/null
+++ b/compare.cc
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2003-2008, John Wiegley.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of New Artisans LLC nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "compare.h"
+
+namespace ledger {
+
+template <>
+bool compare_items<xact_t>::operator()(xact_t * left, xact_t * right)
+{
+  assert(left);
+  assert(right);
+
+  xact_t::xdata_t& lxdata(left->xdata());
+  if (! lxdata.has_flags(XACT_EXT_SORT_CALC)) {
+    lxdata.sort_value = sort_order.calc(*left);
+    lxdata.sort_value.reduce();
+    lxdata.add_flags(XACT_EXT_SORT_CALC);
+  }
+
+  xact_t::xdata_t& rxdata(right->xdata());
+  if (! rxdata.has_flags(XACT_EXT_SORT_CALC)) {
+    rxdata.sort_value = sort_order.calc(*right);
+    rxdata.sort_value.reduce();
+    rxdata.add_flags(XACT_EXT_SORT_CALC);
+  }
+
+  DEBUG("ledger.walk.compare_items_xact",
+	"lxdata.sort_value = " << lxdata.sort_value);
+  DEBUG("ledger.walk.compare_items_xact",
+	"rxdata.sort_value = " << rxdata.sort_value);
+
+  return lxdata.sort_value < rxdata.sort_value;
+}
+
+template <>
+bool compare_items<account_t>::operator()(account_t * left, account_t * right)
+{
+  assert(left);
+  assert(right);
+
+  account_t::xdata_t& lxdata(left->xdata());
+  if (! lxdata.has_flags(ACCOUNT_EXT_SORT_CALC)) {
+    lxdata.sort_value = sort_order.calc(*left);
+    lxdata.add_flags(ACCOUNT_EXT_SORT_CALC);
+  }
+
+  account_t::xdata_t& rxdata(right->xdata());
+  if (! rxdata.has_flags(ACCOUNT_EXT_SORT_CALC)) {
+    rxdata.sort_value = sort_order.calc(*right);
+    rxdata.add_flags(ACCOUNT_EXT_SORT_CALC);
+  }
+
+  return lxdata.sort_value < rxdata.sort_value;
+}
+
+} // namespace ledger