From d91a66e1c5ebbdcdafe0347119b322df8f0ed6d2 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Sat, 26 Jul 2014 21:05:42 -0700
Subject: [PATCH] Read version from CMakeLists.txt instead of using configure
 for compatibility with ReadTheDocs.

---
 CMakeLists.txt              |  4 ----
 doc/{conf.py.in => conf.py} | 12 +++++++++++-
 2 files changed, 11 insertions(+), 5 deletions(-)
 rename doc/{conf.py.in => conf.py} (95%)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cfe84da2..06d6e413 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -151,11 +151,7 @@ if (EXISTS .gitignore)
   set(CPACK_PACKAGE_VERSION_MAJOR 0)
   set(CPACK_PACKAGE_VERSION_MINOR 10)
   set(CPACK_PACKAGE_VERSION_PATCH 0)
-  set(CPPFORMAT_VERSION
-    ${CPACK_PACKAGE_VERSION_MAJOR}.${CPACK_PACKAGE_VERSION_MINOR}.${CPACK_PACKAGE_VERSION_PATCH})
   set(CPACK_SOURCE_PACKAGE_FILE_NAME cppformat-${CPPFORMAT_VERSION})
   set(CPACK_RESOURCE_FILE_README ${FORMAT_SOURCE_DIR}/README.rst)
   include(CPack)
 endif ()
-
-configure_file(doc/conf.py.in doc/conf.py @ONLY)
diff --git a/doc/conf.py.in b/doc/conf.py
similarity index 95%
rename from doc/conf.py.in
rename to doc/conf.py
index 20e4706c..ab130b01 100644
--- a/doc/conf.py.in
+++ b/doc/conf.py
@@ -11,7 +11,7 @@
 # All configuration values have a default; values that are commented out
 # serve to show the default.
 
-import sys, os
+import sys, os, re
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -49,6 +49,16 @@ master_doc = 'index'
 project = u'C++ Format'
 copyright = u'2012-2014, Victor Zverovich'
 
+# Get version from CMakeLists.txt.
+version = {}
+with open('../CMakeLists.txt') as f:
+  for line in f:
+    m = re.match(r'set\(CPACK_PACKAGE_VERSION_([A-Z]+) ([0-9]+)\)', line.strip())
+    if m:
+      kind, value = m.groups()
+      version[kind] = value
+version = '{}.{}.{}'.format(version['MAJOR'], version['MINOR'], version['PATCH'])
+
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.