pyenv verification source

libexec/pyenv-versions

@@ -0,0 +1,195 @@
+#!/usr/bin/env bash
+# Summary: List all Python versions available to pyenv
+# Usage: pyenv versions [--bare] [--skip-aliases] [--skip-envs] [--executables]
+#
+# Lists all Python versions found in `$PYENV_ROOT/versions/*'.
+#
+#   --bare            List just the names, omit `system'
+#   --skip-aliases    Skip symlinks to other versions and to virtual environments
+#   --skip-envs       Skip virtual environments (under <version>/envs)
+#   --executables     Internal. Overrides other options.
+#                     Optimally get a deduplicated list of all executable names in Pyenv-managed
+#                     versions and environments for `pyenv rehash'
+#
+
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+unset bare skip_aliases skip_envs executables
+# Provide pyenv completions
+for arg; do
+  case "$arg" in
+  --complete )
+    echo --bare
+    echo --skip-aliases
+    echo --skip-envs
+    exit ;;
+  --executables ) executables=1; break ;;
+  --bare ) bare=1 ;;
+  --skip-aliases ) skip_aliases=1 ;;
+  --skip-envs ) skip_envs=1 ;;
+  * )
+    pyenv-help --usage versions >&2
+    exit 1
+    ;;
+  esac
+done
+
+
+versions_dir="${PYENV_ROOT}/versions"
+
+# Fast path for rehash: skip filtering and link resolution
+if [[ -n "$executables" ]]; then
+  if [ -d "$versions_dir" ]; then
+    shopt -s dotglob nullglob
+    # MacOS 12+ and FreeBSD 15 support `xargs -r -0' and `basename -a'
+    # `sort -u` is simpler and a bit faster than `awk '!seen[$0]++'`, with the same result for rehash purposes
+    printf '%s\0' "$versions_dir"/*/bin/* "$versions_dir"/*/envs/*/bin/* | xargs -0 -r basename -a | sort -u
+    shopt -u dotglob nullglob
+  fi
+  exit 0
+fi
+
+if ! enable -f "${BASH_SOURCE%/*}"/pyenv-realpath.dylib realpath 2>/dev/null; then
+  if [ -n "$PYENV_NATIVE_EXT" ]; then
+    echo "pyenv: failed to load \`realpath' builtin" >&2
+    exit 1
+  fi
+
+  READLINK=$(type -P readlink)
+  if [ -z "$READLINK" ]; then
+    echo "pyenv: cannot find readlink - are you missing GNU coreutils?" >&2
+    exit 1
+  fi
+
+  resolve_link() {
+    $READLINK "$1"
+  }
+
+  realpath() {
+    local path="$1"
+    local name
+
+    # Use a subshell to avoid changing the current path
+    (
+    while [ -n "$path" ]; do
+      name="${path##*/}"
+      [ "$name" = "$path" ] || cd "${path%/*}"
+      path="$(resolve_link "$name" || true)"
+    done
+
+    echo "${PWD}/$name"
+    )
+  }
+fi
+
+if [ -d "$versions_dir" ]; then
+  versions_dir="$(realpath "$versions_dir")"
+fi
+
+if ((${BASH_VERSINFO[0]} > 3)); then
+  declare -A current_versions
+else
+  current_versions=()
+fi
+if [ -n "$bare" ]; then
+  include_system=""
+else
+  hit_prefix="* "
+  miss_prefix="  "
+  OLDIFS="$IFS"
+  IFS=:
+  if ((${BASH_VERSINFO[0]} > 3)); then
+    for i in $(pyenv-version-name || true); do
+      current_versions["$i"]="1"
+    done
+  else
+    current_versions=($(pyenv-version-name || true))
+  fi
+  IFS="$OLDIFS"
+  include_system="1"
+fi
+
+num_versions=0
+
+exists() {
+  local car="$1"
+  local cdar
+  shift
+  for cdar in "$@"; do
+    if [ "${car}" == "${cdar}" ]; then
+      return 0
+    fi
+  done
+  return 1
+}
+
+print_version() {
+  local version="${1:?}"
+  if [[ -n $bare ]]; then
+    echo "$version"
+    return
+  fi
+  local path="${2:?}"
+  if [[ -L "$path" ]]; then
+    # Only resolve the link itself for printing, do not resolve further.
+    # Doing otherwise would misinform the user of what the link contains.
+    version_repr="$version --> $(readlink "$path")"
+  else
+    version_repr="$version"
+  fi
+  if [[ ${BASH_VERSINFO[0]} -ge 4 && ${current_versions["$1"]} ]]; then
+    echo "${hit_prefix}${version_repr} (set by $(pyenv-version-origin))"
+  elif (( ${BASH_VERSINFO[0]} <= 3 )) && exists "$1" "${current_versions[@]}"; then
+    echo "${hit_prefix}${version_repr} (set by $(pyenv-version-origin))"
+  else
+    echo "${miss_prefix}${version_repr}"
+  fi
+  num_versions=$((num_versions + 1))
+}
+
+# Include "system" in the non-bare output, if it exists
+if [ -n "$include_system" ] && \
+    (PYENV_VERSION=system pyenv-which python --skip-advice >/dev/null 2>&1 || \
+     PYENV_VERSION=system pyenv-which python3 --skip-advice >/dev/null 2>&1 || \
+     PYENV_VERSION=system pyenv-which python2 --skip-advice >/dev/null 2>&1) ; then
+  print_version system "/"
+fi
+
+shopt -s dotglob nullglob
+versions_dir_entries=("$versions_dir"/*)
+if sort --version-sort </dev/null >/dev/null 2>&1; then
+    # system sort supports version sorting
+    OLDIFS="$IFS"
+    IFS=$'\n'
+    versions_dir_entries=($(
+        printf "%s\n" "${versions_dir_entries[@]}" |
+        sort --version-sort
+    ))
+    IFS="$OLDIFS"
+fi
+
+for path in "${versions_dir_entries[@]}"; do
+  if [ -d "$path" ]; then
+    if [ -n "$skip_aliases" ] && [ -L "$path" ]; then
+      target="$(realpath "$path")"
+      [ "${target%/*}" == "$versions_dir" ] && continue
+      [ "${target%/*/envs/*}" == "$versions_dir" ] && continue
+    fi
+    print_version "${path##*/}" "$path"
+    # virtual environments created by anaconda/miniconda/pyenv-virtualenv
+    if [[ -z $skip_envs ]]; then
+      for env_path in "${path}/envs/"*; do
+        if [ -d "${env_path}" ]; then
+          print_version "${env_path#${PYENV_ROOT}/versions/}" "${env_path}"
+        fi
+      done
+    fi
+  fi
+done
+shopt -u dotglob nullglob
+
+if [ "$num_versions" -eq 0 ] && [ -n "$include_system" ]; then
+  echo "Warning: no Python detected on the system" >&2
+  exit 1
+fi