docs.eclass: add initialize_git_repo helper function

Signed-off-by: Andrew Ammerlaan <[email protected]>

eclass/docs.eclass

@@ -143,6 +143,15 @@ esac
 #
 # Defaults to Doxyfile for doxygen
 
+# @ECLASS_VARIABLE: DOCS_INITIALIZE_GIT
+# @DEFAULT_UNSET
+# @PRE_INHERIT
+# @DESCRIPTION:
+# Sometimes building the documentation will fail if this is not done
+# inside a git repository. If this variable is set the compile functions
+# will initialize a dummy git repository before compiling. A dependency
+# on dev-vcs/git is automatically added.
+
 if [[ ! ${_DOCS} ]]; then
 
 # For the python based DOCS_BUILDERS we need to inherit any python eclass
@@ -164,6 +173,24 @@ case ${DOCS_BUILDER} in
  ;;
 esac
 
+# @FUNCTION: initialize_git_repo
+# @DESCRIPTION:
+# Initializes a dummy git repository. This function is called by the
+# documentation compile functions if DOCS_INITIALIZE_GIT is set. It can
+# also be called manually.
+initialize_git_repo() {
+ # Only initialize if we are not already in a git repository
+ local git_is_initialized="$(git rev-parse --is-inside-work-tree 2> /dev/null)"
+ if [[ ! "${git_is_initialized}" ]]; then
+ git init -q || die
+ git config --global user.email "[email protected]" || die
+ git config --global user.name "Larry the Cow" || die
+ git add . || die
+ git commit -qm "init" || die
+ git tag -a "${PV}" -m "${PN} version ${PV}" || die
+ fi
+}
+
 # @FUNCTION: python_append_deps
 # @INTERNAL
 # @DESCRIPTION:
@@ -216,6 +243,8 @@ sphinx_compile() {
  : ${DOCS_DIR:="${S}"}
  : ${DOCS_OUTDIR:="${S}/_build/html/sphinx"}
 
+ [[ ${DOCS_INITIALIZE_GIT} ]] && initialize_git_repo
+
  local confpy=${DOCS_DIR}/conf.py
  [[ -f ${confpy} ]] ||
  die "${FUNCNAME}: ${confpy} not found, DOCS_DIR=${DOCS_DIR} call wrong"
@@ -277,6 +306,8 @@ mkdocs_compile() {
  : ${DOCS_DIR:="${S}"}
  : ${DOCS_OUTDIR:="${S}/_build/html/mkdocs"}
 
+ [[ ${DOCS_INITIALIZE_GIT} ]] && initialize_git_repo
+
  local mkdocsyml=${DOCS_DIR}/mkdocs.yml
  [[ -f ${mkdocsyml} ]] ||
  die "${FUNCNAME}: ${mkdocsyml} not found, DOCS_DIR=${DOCS_DIR} wrong"
@@ -320,6 +351,8 @@ doxygen_compile() {
  : ${DOCS_DIR:="${S}"}
  : ${DOCS_OUTDIR:="${S}/_build/html/doxygen"}
 
+ [[ ${DOCS_INITIALIZE_GIT} ]] && initialize_git_repo
+
  local doxyfile=${DOCS_DIR}/${DOCS_CONFIG_NAME}
  [[ -f ${doxyfile} ]] ||
  die "${FUNCNAME}: ${doxyfile} not found, DOCS_DIR=${DOCS_DIR} or DOCS_CONFIG_NAME=${DOCS_CONFIG_NAME} wrong"
@@ -388,6 +421,8 @@ case ${DOCS_BUILDER} in
  ;;
 esac
 
+[[ ${DOCS_INITIALIZE_GIT} ]] && DOCS_DEPEND+=" dev-vcs/git "
+
 if [[ ${EAPI} != 6 ]]; then
  BDEPEND+=" doc? ( ${DOCS_DEPEND} )"
 else