fetch version number from file instead of using git tag

This allows users to download the repository as zip. Furthermore this change also allows the user to increase the version number in the working tree, without having to commit and tag.

.travis.yml

@@ -111,7 +111,8 @@ before_deploy:
   - |
     cd $TRAVIS_BUILD_DIR
 
-    VERSION=$(head -1 build/version.txt)
+    VERSION=$(head -1 version.txt)
+    VERSION=${VERSION//./_}
 
     if [[ "$PYTHON_BINDING" == "1" ]]; then
       PYTHON_VERSION=${PYTHON//.}

CMakeLists.txt

@@ -22,28 +22,11 @@ endif()
 
 # --- Version ---
 
-if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
-	find_package(Git)
+file (STRINGS "version.txt" VERSION_STRING)
 
-    execute_process(
-        COMMAND ${GIT_EXECUTABLE} describe --long
-        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
-        OUTPUT_VARIABLE GIT_VERSION_NUMBER
-        OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
-else()
-    set(GIT_VERSION_NUMBER "")
-endif()
-
-if("${GIT_VERSION_NUMBER}" STREQUAL "")
-	message(WARNING "Unable to derive SourcetrailDB version number from most recent Git tag.")
-    set(GIT_VERSION_NUMBER "v0.db0.p0-0-a")
-endif()
-
-string(REGEX REPLACE "v([0-9]+)\\..*" "\\1" INTERFACE_VERSION "${GIT_VERSION_NUMBER}")
-string(REGEX REPLACE "v[0-9]+\\.db([0-9]+)\\..*" "\\1" DATABASE_VERSION "${GIT_VERSION_NUMBER}")
-string(REGEX REPLACE "v[0-9]+\\.db[0-9]+\\.p([0-9]+)-.*" "\\1" PATCH_VERSION "${GIT_VERSION_NUMBER}")
-set(VERSION_STRING "v${INTERFACE_VERSION}.db${DATABASE_VERSION}.p${PATCH_VERSION}")
+string(REGEX REPLACE "v([0-9]+)\\..*" "\\1" INTERFACE_VERSION "${VERSION_STRING}")
+string(REGEX REPLACE "v[0-9]+\\.db([0-9]+)\\..*" "\\1" DATABASE_VERSION "${VERSION_STRING}")
+string(REGEX REPLACE "v[0-9]+\\.db[0-9]+\\.p([0-9]+).*" "\\1" PATCH_VERSION "${VERSION_STRING}")
 set(VERSION_STRING_UNDERSCORE "v${INTERFACE_VERSION}_db${DATABASE_VERSION}_p${PATCH_VERSION}")
 
 message(STATUS "SourcetrailDB Version: ${VERSION_STRING}")
@@ -51,11 +34,6 @@ message(STATUS "Interface Version: ${INTERFACE_VERSION}")
 message(STATUS "Database Version: ${DATABASE_VERSION}")
 message(STATUS "Patch Version: ${PATCH_VERSION}")
 
-configure_file(
-	${CMAKE_CURRENT_SOURCE_DIR}/version.txt.in
-	"${CMAKE_CURRENT_BINARY_DIR}/version.txt"
-)
-
 
 # --- Core ---
 

appveyor.yml

@@ -69,9 +69,10 @@ before_build:
     - cd build
     - cmake -G "%CMAKE_GENERATOR%" ../ -DBUILD_BINDINGS_PYTHON=ON -DPYTHON_LIBRARY="%PYTHON_PATH%/libs/python%PYTHON_VERSION%.lib"
     - cd ../
-    - ps: $env:CORE_VERSION = Get-Content -Path ./build/version.txt
+    - ps: $env:CORE_VERSION = Get-Content -Path ./version.txt
+    - ps: $env:UNDERSCORED_CORE_VERSION = $env:CORE_VERSION.Replace(".", "_")
     - ps: echo "Core version is $env:CORE_VERSION"
-# TODO: convert the core version into dotted format and update appveyor version here
+# TODO: use the core version to update appveyor version here
 #    - ps: $env:BUILD_VERSION = "0.0.1." + $env:APPVEYOR_BUILD_NUMBER 
 #    - ps: echo update build version to $env:BUILD_VERSION
 #    - ps: Update-AppveyorBuild -Version $env:BUILD_VERSION
@@ -84,8 +85,8 @@ build_script:
 
 
 after_build:
-    - ps: $env:CORE_PACKAGE_NAME = 'sourcetraildb_core_' + $env:CORE_VERSION + '-windows-' + $env:MBITS + 'bit-msvc' + $env:MSVC_VERSION
-    - ps: $env:PYTHON_PACKAGE_NAME = 'sourcetrailbd_python' + $env:PYTHON_VERSION + '_' + $env:CORE_VERSION + '-windows-' + $env:MBITS + 'bit'
+    - ps: $env:CORE_PACKAGE_NAME = 'sourcetraildb_core_' + $env:UNDERSCORED_CORE_VERSION + '-windows-' + $env:MBITS + 'bit-msvc' + $env:MSVC_VERSION
+    - ps: $env:PYTHON_PACKAGE_NAME = 'sourcetrailbd_python' + $env:PYTHON_VERSION + '_' + $env:UNDERSCORED_CORE_VERSION + '-windows-' + $env:MBITS + 'bit'
     - ps: echo $env:CORE_PACKAGE_NAME
     - ps: echo $env:PYTHON_PACKAGE_NAME
     - mkdir artifacts_core

version.txt

@@ -0,0 +1 @@
+v2.db23.p2

version.txt.in

@@ -1 +0,0 @@
-@VERSION_STRING_UNDERSCORE@