1 files changed, 82 insertions, 0 deletions
diff --git a/sample/subtly/stats.cc b/sample/subtly/stats.cc
new file mode 100644
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--- /dev/null
+++ b/sample/subtly/stats.cc
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2011 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdio.h>
+
+#include "sfntly/font.h"
+#include "sfntly/table/table.h"
+#include "sfntly/tag.h"
+#include "subtly/stats.h"
+
+namespace subtly {
+using namespace sfntly;
+
+int32_t TotalFontSize(Font* font) {
+  int32_t size = 0;
+  const TableMap* table_map = font->GetTableMap();
+  for (TableMap::const_iterator it = table_map->begin(),
+           e = table_map->end(); it != e; ++it) {
+    size += it->second->DataLength();
+  }
+  return size;
+}
+
+double TableSizePercent(Font* font, int32_t tag) {
+  TablePtr table = font->GetTable(tag);
+  return static_cast<double>(table->DataLength()) / TotalFontSize(font) * 100;
+}
+
+void PrintComparison(FILE* out, Font* font, Font* new_font) {
+  fprintf(out, "====== Table Comparison (original v. subset) ======\n");
+  const TableMap* tables = font->GetTableMap();
+  for (TableMap::const_iterator it = tables->begin(),
+           e = tables->end(); it != e; ++it) {
+    char *name = TagToString(it->first);
+    int32_t size = it->second->DataLength();
+    fprintf(out, "-- %s: %d (%lf%%) ", name, size,
+            TableSizePercent(font, it->first));
+    delete[] name;
+
+    Ptr<FontDataTable> new_table = new_font->GetTable(it->first);
+    int32_t new_size = 0;
+    double size_percent = 0;
+    if (new_table) {
+      new_size = new_table->DataLength();
+      size_percent = subtly::TableSizePercent(new_font, it->first);
+    }
+
+    if (new_size == size) {
+      fprintf(out, "| same size\n");
+    } else {
+      fprintf(out, "-> %d (%lf%%) | %lf%% of original\n", new_size,
+              size_percent, static_cast<double>(new_size) / size * 100);
+    }
+  }
+}
+
+void PrintStats(FILE* out, Font* font) {
+  fprintf(out, "====== Table Stats ======\n");
+  const TableMap* tables = font->GetTableMap();
+  for (TableMap::const_iterator it = tables->begin(),
+           e = tables->end(); it != e; ++it) {
+    char *name = TagToString(it->first);
+    int32_t size = it->second->DataLength();
+    fprintf(out, "-- %s: %d (%lf%%)\n", name, size,
+            TableSizePercent(font, it->first));
+    delete[] name;
+  }
+}
+}