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Diffstat (limited to 'python.eselect.in')
| -rw-r--r-- | python.eselect.in | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/python.eselect.in b/python.eselect.in new file mode 100644 index 0000000..9a52791 --- /dev/null +++ b/python.eselect.in @@ -0,0 +1,412 @@ +# Copyright 1999-2014 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 +# $Id: $ + +DESCRIPTION="Manage Python symlinks" +MAINTAINER="python@gentoo.org" +SVN_DATE='$Date$' +VERSION=$(svn_date_to_version "${SVN_DATE}" ) + +ENV_D_PATH="${EROOT%/}/etc/env.d" +INTERPRETER_PATH="${EROOT%/}/usr/bin/" +MAN_PATH="${EROOT%/}/usr/share/man/man1/" + +PYTHON_INTERPRETERS_GROUP="" + +# Find a list of Python versions +find_targets() { + local interpreter interpreters="python?.?@EXEEXT@" + + if [[ "${PYTHON_INTERPRETERS_GROUP}" == "2" ]]; then + interpreters="python2.?@EXEEXT@" + elif [[ "${PYTHON_INTERPRETERS_GROUP}" == "3" ]]; then + interpreters="python3.?@EXEEXT@" + fi + + # Think twice before adding jython to this list. /usr/bin/jython + # is a bash wrapper that calls java-config, which is a Python + # script, so you need a valid /usr/bin/python to start jython. + for interpreter in "${INTERPRETER_PATH}"${interpreters}; do + if [[ -f "${interpreter}" ]]; then + echo ${interpreter#${INTERPRETER_PATH}} + fi + done +} + +set_python() { + local symlink="${INTERPRETER_PATH}python" target="${1}" + ln -s python-wrapper "${symlink}" + mkdir -p "${ENV_D_PATH}/python" + echo "${target}" > "${ENV_D_PATH}/python/config" +} + +set_python_config() { + local script="${INTERPRETER_PATH}python-config" target="${1}" + cat << EOF > "${script}" +#!/usr/bin/env bash +# Gentoo python-config wrapper script + +[[ "\${EPYTHON}" =~ (/|^python\$) ]] && EPYTHON="${target/-config-/}" +python_config="\${EPYTHON/python/python-config-}" +"\${0%/*}/\${python_config:-${target}}" "\$@" +EOF + chmod a+rx "${script}" +} + +# Try to remove python and python.1 symlinks +remove_symlinks() { + local symlink symlink_target symlink_target_found + if [[ "${SET_MAIN_ACTIVE_PYTHON_INTERPRETER}" == "1" ]]; then + rm -f "${INTERPRETER_PATH}"{idle,pydoc,python,python-config,pythonw} &> /dev/null || return 1 + rm -f "${MAN_PATH}"python.1{,.gz,.bz2,.lzma,.xz} &> /dev/null || return 1 + fi + + for symlink in "${INTERPRETER_PATH}python"?; do + [[ ! -L "${symlink}" ]] && continue + symlink_target_found=0 + for symlink_target in "${symlink}".?; do + [[ -f "${symlink_target}" ]] && symlink_target_found=1 + done + if [[ "${symlink_target_found}" -eq 0 ]]; then + rm -f "${symlink}" + fi + done + + # Files of Mac OS X framework + rm -f "${INTERPRETER_PATH%/bin/}/lib/Python.framework}"/{Headers,Python,Resources} +} + +# Set a man page symlink +set_man_symlink() { + local target="${1}" x extension + + for x in ".1" ".1.bz2" ".1.gz" ".1.lzma" ".1.xz"; do + if [[ -e "${MAN_PATH}${target}${x}" ]]; then + extension="${x}" + break + fi + done + + if [[ -z "${extension}" ]]; then + echo "Couldn't find a man page for ${target}; skipping." 1>&2 + return 1 + fi + + pushd "${MAN_PATH}" 1> /dev/null + ln -nfs "${target}${extension}" "python${extension}" + popd 1> /dev/null +} + +# Set python-config script and appropriate symlinks +set_scripts_and_symlinks() { + local target="${1}" targets=($(find_targets)) + if is_number "${target}" && [[ ${target} -ge 1 ]]; then + target=${targets[$((${target} - 1))]} + fi + + if ! has ${target} "${targets[@]}"; then + die -q "Invalid target ${target}" + fi + if [[ -f "${INTERPRETER_PATH}${target}" ]]; then + if ! remove_symlinks; then + die -q "Cannot remove symlinks" + fi + + if [[ "${SET_MAIN_ACTIVE_PYTHON_INTERPRETER}" == "1" ]]; then + set_man_symlink "${target}" + fi + + pushd "${INTERPRETER_PATH}" 1> /dev/null + + ln -nfs "${target}" "${target%.*}" + if [[ "${SET_MAIN_ACTIVE_PYTHON_INTERPRETER}" == "1" ]]; then + set_python "${target}" + set_python_config "${target/python/python-config-}" + ln -nfs "${target/python/pydoc}" pydoc + # idle is optionally installed + if [[ -f "${target/python/idle}" ]]; then + ln -nfs "${target/python/idle}" idle + fi + # 2to3 for >=2.6 + if [[ -f "${target/python/2to3-}" ]]; then + ln -nfs "${target/python/2to3-}" 2to3 + fi + + # Wrapper for graphical applications on Mac OS X + if [[ -f "${target/python/pythonw}" ]] ; then + ln -nfs "${target/python/pythonw}" pythonw + fi + + # Files of Mac OS X framework + local framework_dir="${INTERPRETER_PATH%/bin/}/lib/Python.framework" + if [[ -d "${framework_dir}" ]]; then + local version="${target#python}" + pushd "${framework_dir}" 1> /dev/null + ln -nfs "Versions/${version}/Headers" + ln -nfs "Versions/${version}/Python" + ln -nfs "Versions/${version}/Resources" + popd 1> /dev/null + fi + fi + + popd 1> /dev/null + else + die -q "Target \"${1}\" doesn't appear to be valid!" + fi +} + +# Set the content of /etc/env.d/65python-docs +set_python_docs() { + local path target="${1#python}" variable + rm -f "${ENV_D_PATH}/65python-docs" + if [[ -f "${ENV_D_PATH}/60python-docs-${target}" ]]; then + variable="PYTHONDOCS_${target//./_}" + path="$(. "${ENV_D_PATH}/60python-docs-${target}"; echo -n "${!variable}")" + if [[ -d "${path}" ]]; then + echo "PYTHONDOCS=\"${path}\"" > "${ENV_D_PATH}/65python-docs" + fi + fi +} + +### show action ### + +describe_show() { + echo "Show main active Python interpreter" +} + +describe_show_options() { + echo "--ABI : Show Python ABI in format of PYTHON_ABI variable" + echo "--python2 : Show active Python 2 interpreter" + echo "--python3 : Show active Python 3 interpreter" +} + +do_show() { + local ABI="0" interpreter python2="0" python3="0" + while [[ $# > 0 ]]; do + case "$1" in + --ABI) + ABI="1" + ;; + --python2) + python2="1" + ;; + --python3) + python3="1" + ;; + *) + die -q "Unrecognized argument '$1'" + ;; + esac + shift + done + + if [[ "${python2}" == "1" && "${python3}" == "1" ]]; then + die -q "'--python2' and '--python3' options cannot be specified simultaneously" + fi + + if [[ "${python2}" == "1" ]]; then + interpreter="$(readlink "${INTERPRETER_PATH}python2")" + elif [[ "${python3}" == "1" ]]; then + interpreter="$(readlink "${INTERPRETER_PATH}python3")" + elif [[ -f "${ENV_D_PATH}/python/config" ]]; then + interpreter="$(<"${ENV_D_PATH}/python/config")" + fi + + if [[ "${ABI}" == "1" ]]; then + echo -n "${interpreter#python}" + else + echo -n "${interpreter}" + fi + + if [[ -n "${interpreter}" ]]; then + echo + fi +} + +### list action ### + +describe_list() { + echo "List installed Python interpreters" +} + +describe_list_options() { + echo "--python2 : List installed Python 2 interpreters" + echo "--python3 : List installed Python 3 interpreters" +} + +do_list() { + local active i python_descriptive_name="Python" python_version_option= python2="0" python3="0" targets=() + while [[ $# > 0 ]]; do + case "$1" in + --python2) + python2="1" + python_descriptive_name="Python 2" + python_version_option="--python2" + PYTHON_INTERPRETERS_GROUP="2" + ;; + --python3) + python3="1" + python_descriptive_name="Python 3" + python_version_option="--python3" + PYTHON_INTERPRETERS_GROUP="3" + ;; + *) + die -q "Unrecognized argument '$1'" + ;; + esac + shift + done + + if [[ "${python2}" == "1" && "${python3}" == "1" ]]; then + die -q "'--python2' and '--python3' options cannot be specified simultaneously" + fi + + targets=($(find_targets)) + + write_list_start "Available ${python_descriptive_name} interpreters:" + + active="$(do_show ${python_version_option})" + for ((i = 0; i < ${#targets[@]}; i++)); do + if [[ ${targets[${i}]} == ${active} ]]; then + targets[${i}]="$(highlight_marker "${targets[${i}]}")" + fi + done + write_numbered_list -m "(none found)" "${targets[@]}" +} + +### set action ### + +describe_set() { + echo "Set main active Python interpreter" +} + +describe_set_options() { + echo "--python2 : Set active Python 2 interpreter without setting of main active Python interpreter if it is not set to Python 2" + echo "--python3 : Set active Python 3 interpreter without setting of main active Python interpreter if it is not set to Python 3" +} + +describe_set_parameters() { + echo "<target>" +} + +do_set() { + local main_active_python_interpreter python2="0" python3="0" + SET_MAIN_ACTIVE_PYTHON_INTERPRETER="1" + while [[ $# > 0 ]]; do + case "$1" in + --python2) + python2="1" + PYTHON_INTERPRETERS_GROUP="2" + ;; + --python3) + python3="1" + PYTHON_INTERPRETERS_GROUP="3" + ;; + *) + break + ;; + esac + shift + done + + if [[ "${python2}" == "1" && "${python3}" == "1" ]]; then + die -q "'--python2' and '--python3' options cannot be specified simultaneously" + fi + + if [[ $# -lt 1 ]]; then + die -q "'eselect python set' requires Python interpreter filename" + elif [[ $# -gt 1 ]]; then + die -q "'eselect python set' requires 1 argument" + else + main_active_python_interpreter="$(do_show)" + if [[ "${python2}" == "1" && "${main_active_python_interpreter}" != "python2."* ]]; then + SET_MAIN_ACTIVE_PYTHON_INTERPRETER="0" + elif [[ "${python3}" == "1" && "${main_active_python_interpreter}" != "python3."* ]]; then + SET_MAIN_ACTIVE_PYTHON_INTERPRETER="0" + fi + + if ! set_scripts_and_symlinks "${1}"; then + die -q "Can't set new provider" + fi + + if [[ "${SET_MAIN_ACTIVE_PYTHON_INTERPRETER}" == "1" ]]; then + set_python_docs "${1}" + fi + fi +} + +### update action ### + +describe_update() { + echo "Switch to the most recent CPython interpreter" +} + +describe_update_options() { + echo "--if-unset : Do not override existing implementation" + echo "--ignore SLOT : Ignore SLOT when setting symlinks" + echo "--python2 : Set active Python 2 interpreter without setting of main active Python interpreter if it is not set to Python 2" + echo "--python3 : Set active Python 3 interpreter without setting of main active Python interpreter if it is not set to Python 3" +} + +do_update() { + local if_unset="0" ignored_slots=() interpreters="python?.?@EXEEXT@" python2="0" python3="0" python_version_option= slot= target targets=() + while [[ $# > 0 ]]; do + case "$1" in + --if-unset) + if_unset="1" + ;; + --ignore) + ignored_slots+=("${2}") + shift;; + --python2) + python2="1" + python_version_option="--python2" + ;; + --python3) + python3="1" + python_version_option="--python3" + ;; + *) + die -q "Unrecognized argument '$1'" + ;; + esac + shift + done + + if [[ "${python2}" == "1" && "${python3}" == "1" ]]; then + die -q "'--python2' and '--python3' options cannot be specified simultaneously" + fi + + if [[ "${if_unset}" == "1" && -f "${INTERPRETER_PATH}python" && -f "${ENV_D_PATH}/python/config" ]]; then + if [[ "${python2}" == "1" && -f "${INTERPRETER_PATH}python2" ]]; then + return + elif [[ "${python3}" == "1" && -f "${INTERPRETER_PATH}python3" ]]; then + return + elif [[ "${python2}" == "0" && "${python3}" == "0" ]]; then + return + fi + fi + + if [[ "${python2}" == "1" ]]; then + interpreters="python2.?@EXEEXT@" + elif [[ "${python3}" == "1" ]]; then + interpreters="python3.?@EXEEXT@" + fi + + targets=($(cd "${INTERPRETER_PATH}"; ls ${interpreters} 2> /dev/null | sort -r)) + + # Ignore slots + for slot in ${ignored_slots[@]}; do + targets=(${targets[@]/python${slot}/}) + done + + if [[ ${#targets[@]} -gt 0 ]]; then + target=${targets[0]} + echo "Switching to ${target}" + do_set ${python_version_option} ${target} + else + die -q "No Python interpreter available" + fi +} + +# vim: set ft=eselect : |