initial import of regression testing mechanism for quickbook.

(Note: has known annoyances and limitations)


[SVN r30806]

test/text_diff.cpp

@@ -0,0 +1,84 @@
+//
+//  Copyright (c) 2005 João Abecasis
+//
+//  Distributed under the Boost Software License, Version 1.0. (See
+//  accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <fstream>
+#include <iostream>
+#include <iterator>
+
+#include <boost/spirit/core/scanner/scanner.hpp>
+#include <boost/spirit/core/primitives/primitives.hpp>
+
+namespace spirit = boost::spirit;
+
+typedef std::istream_iterator<char, char> iterator;
+typedef spirit::scanner<iterator> scanner;
+
+int main(int argc, char * argv[])
+{
+    if (argc != 3)
+    {
+        std::cerr << "ERROR: Wrong number of arguments." << std::endl;
+        std::cout << "Usage:\n\t" << argv[0] << " file1 file2" << std::endl;
+
+        return 1;
+    }
+
+    std::ifstream
+        file1(argv[1], std::ios_base::binary | std::ios_base::in),
+        file2(argv[2], std::ios_base::binary | std::ios_base::in);
+
+    if (!file1 || !file2)
+    {
+        std::cerr << "ERROR: Unable to open one or both files." << std::endl;
+        return 2;
+    }
+
+    file1.unsetf(std::ios_base::skipws);
+    file2.unsetf(std::ios_base::skipws);
+
+    iterator
+        iter_file1(file1),
+        iter_file2(file2);
+
+    scanner
+        scan1(iter_file1, iterator()),
+        scan2(iter_file2, iterator());
+
+    std::size_t line = 1, column = 1;
+
+    while (!scan1.at_end() && !scan2.at_end())
+    {
+        if (spirit::eol_p.parse(scan1))
+        {
+            if (!spirit::eol_p.parse(scan2))
+            {
+                std::cout << "Files differ at line " << line << ", column " <<
+                    column << '.' << std::endl;
+                return 3;
+            }
+
+            ++line, column = 1;
+            continue;
+        }
+
+        if (*scan1 != *scan2)
+        {
+            std::cout << "Files differ at line " << line << ", column " <<
+                column << '.' << std::endl;
+            return 4;
+        }
+
+        ++scan1, ++scan2, ++column;
+    }
+
+    if (scan1.at_end() != scan2.at_end())
+    {
+        std::cout << "Files differ in length." << std::endl;
+        return 5;
+    }
+}