From 0ad34c19f4cf5e4ac0e82ded4257dfed473e6dd1 Mon Sep 17 00:00:00 2001
From: jzmaddock <john@johnmaddock.co.uk>
Date: Tue, 5 Mar 2019 18:44:38 +0000
Subject: [PATCH] Fix up Jamfile.v2 and testing system after changes to
 quickbook left it broken - it is now self contained.

---
 test/Jamfile.v2    |  4 +-
 test/text_diff.cpp | 96 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+), 1 deletion(-)
 create mode 100644 test/text_diff.cpp

diff --git a/test/Jamfile.v2 b/test/Jamfile.v2
index 4b1e60b..c05eeec 100644
--- a/test/Jamfile.v2
+++ b/test/Jamfile.v2
@@ -8,7 +8,8 @@ import testing ;
 import toolset ;
 import type ;
 
-alias line_compare_tool : ../../quickbook/test/src//line-compare-tool ;
+exe line_compare_tool : text_diff.cpp ;
+install install_line_compare : line_compare_tool : <location>. ; 
 
 rule auto-index-test ( target-name : input-file : output-file ? : options * )
 {
@@ -45,6 +46,7 @@ rule auto-index-test ( target-name : input-file : output-file ? : options * )
                 <implicit-dependency>$(target_name)
                 <dependency>Jamfile.v2
                 <dependency>$(input-file)
+                <dependency>install_line_compare
         ]
         ;
 
diff --git a/test/text_diff.cpp b/test/text_diff.cpp
new file mode 100644
index 0000000..cee5211
--- /dev/null
+++ b/test/text_diff.cpp
@@ -0,0 +1,96 @@
+//
+//  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 <cstring>
+#include <fstream>
+#include <iostream>
+#include <iterator>
+#include <vector>
+
+#include <boost/spirit/include/classic_primitives.hpp>
+#include <boost/spirit/include/classic_scanner.hpp>
+
+namespace spirit = boost::spirit::classic;
+
+typedef std::istream_iterator<char, char> iterator;
+typedef spirit::scanner<iterator> scanner;
+
+int main(int argc, char* argv[])
+{
+    std::vector<char*> args;
+    bool usage_error = false;
+
+    for (int i = 1; i < argc; ++i) {
+        if (std::strncmp(argv[i], "--", 2) == 0) {
+            if (strcmp(argv[i], "--strict") == 0) {
+                // Ignore --strict because the build file accidentally
+                // uses it. Why yes, this is a horrible hack.
+            }
+            else {
+                std::cerr << "ERROR: Invalid flag: " << argv[i] << std::endl;
+                usage_error = true;
+            }
+        }
+        else {
+            args.push_back(argv[i]);
+        }
+    }
+
+    if (!usage_error && args.size() != 2) {
+        std::cerr << "ERROR: Wrong number of arguments." << std::endl;
+        usage_error = true;
+    }
+
+    if (usage_error) {
+        std::cout << "Usage:\n\t" << argv[0] << " file1 file2" << std::endl;
+        return 1;
+    }
+
+    std::ifstream file1(args[0], std::ios_base::binary | std::ios_base::in),
+        file2(args[1], 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;
+    }
+}