pyenv verification source

libexec/pyenv-which

@@ -0,0 +1,122 @@
+#!/usr/bin/env bash
+#
+# Summary: Display the full path to an executable
+#
+# Usage: pyenv which <command> [--nosystem] [--skip-advice]
+#
+# Displays the full path to the executable that pyenv will invoke when
+# you run the given command.
+# Use --nosystem argument in case when you don't need to search command in the 
+# system environment.
+# Internal switch --skip-advice used to skip printing an error message on a
+# failed search.
+
+set -e
+[ -n "$PYENV_DEBUG" ] && set -x
+
+# Provide pyenv completions
+if [ "$1" = "--complete" ]; then
+  exec pyenv-shims --short
+fi
+
+system="system"
+SKIP_ADVICE=""
+PYENV_COMMAND="$1"
+
+while [[ $# -gt 0 ]]
+do
+  case "$1" in
+    --skip-advice)
+      SKIP_ADVICE=1
+      shift
+      ;;
+    --nosystem)
+      system=""
+      shift
+      ;;
+    *)
+      shift
+      ;;
+  esac
+done
+
+
+remove_from_path() {
+  local -a paths_to_remove
+  IFS=: paths_to_remove=($1)
+  local path_to_remove path_before
+  local result=":${PATH//\~/$HOME}:"
+  for path_to_remove in "${paths_to_remove[@]}"; do
+    while true; do
+      path_before="$result"
+      result="${result//:$path_to_remove:/:}"
+      if [[ ${#path_before} == "${#result}" ]]; then break; fi
+    done
+  done
+  result="${result:1:${#result}-2}"
+  echo "$result"
+}
+
+if [ -z "$PYENV_COMMAND" ]; then
+  pyenv-help --usage which >&2
+  exit 1
+fi
+
+OLDIFS="$IFS"
+IFS=: versions=(${PYENV_VERSION:-$(pyenv-version-name -f)})
+IFS="$OLDIFS"
+
+declare -a nonexistent_versions
+
+for version in "${versions[@]}" "$system"; do
+  if [ "$version" = "system" ]; then
+    PROGRAM="$(echo "$PYENV_COMMAND" | tr a-z- A-Z_ | sed 's/[^A-Z0-9_]/_/g')"
+    NR_CUSTOM_SHIM_PATHS="_PYENV_SHIM_PATHS_$PROGRAM"
+    SEARCH_PATH="$(remove_from_path "${PYENV_ROOT}/shims${!NR_CUSTOM_SHIM_PATHS:+:${!NR_CUSTOM_SHIM_PATHS}}")"
+    PYENV_COMMAND_PATH="$(PATH="$SEARCH_PATH" command -v "$PYENV_COMMAND" || true)"
+  else
+    # $version may be a prefix to be resolved by pyenv-latest
+    version_path="$(pyenv-prefix "${version}" 2>/dev/null)" || \
+        { nonexistent_versions+=("$version"); continue; }
+    # resolve $version for hooks
+    version="$(basename "$version_path")"
+    PYENV_COMMAND_PATH="$version_path/bin/${PYENV_COMMAND}"
+    unset version_path
+  fi
+  if [ -x "$PYENV_COMMAND_PATH" ]; then
+    break
+  fi
+done
+
+OLDIFS="$IFS"
+IFS=$'\n' scripts=(`pyenv-hooks which`)
+IFS="$OLDIFS"
+for script in "${scripts[@]}"; do
+  source "$script"
+done
+
+if [ -x "$PYENV_COMMAND_PATH" ]; then
+  echo "$PYENV_COMMAND_PATH"
+else
+  if (( ${#nonexistent_versions[@]} )); then
+    for version in "${nonexistent_versions[@]}"; do
+      echo "pyenv: version \`$version' is not installed (set by $(pyenv-version-origin))" >&2
+    done
+  fi
+
+  echo "pyenv: $PYENV_COMMAND: command not found" >&2
+  if [ -z "$SKIP_ADVICE" ]; then
+    versions="$(pyenv-whence "$PYENV_COMMAND" || true)"
+    if [ -n "$versions" ]; then
+      { echo
+        echo "The \`$PYENV_COMMAND' command exists in these Python versions:"
+        echo "$versions" | sed 's/^/  /g'
+        echo
+        echo "Note: See 'pyenv help global' for tips on allowing multiple"
+        echo "      Python versions to be found at the same time."
+      } >&2
+    fi
+  fi
+
+  exit 127
+fi