New path management system
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117
dotfiles/lib/python/shell_path.py
Executable file
117
dotfiles/lib/python/shell_path.py
Executable file
@ -0,0 +1,117 @@
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#!/usr/bin/env python
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import argparse
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import os
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class PathList(object):
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@classmethod
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def from_string(cls, path_string, separator=':'):
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non_empty_paths = [path for path in path_string.split(separator) if path]
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return cls(non_empty_paths, separator=':')
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def __init__(self, paths, separator=':'):
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self.paths = paths
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self.separator = separator
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def __str__(self):
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return self.with_separator(self.separator)
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def with_separator(self, separator=None):
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separator = separator or self.separator
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deduped = []
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included = set()
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for path in self.paths:
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normalized = os.path.normpath(path)
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if normalized not in included:
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included.add(normalized)
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deduped.append(path)
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return separator.join(
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os.path.normpath(path) for path in deduped
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)
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def add(self, new_paths, after=False, target=None):
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if target:
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target_index = self.paths.index(target)
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else:
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target_index = 0
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if after:
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increment = 1 if target else len(self.paths)
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target_index += increment
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self.paths = self.paths[:target_index] + new_paths + self.paths[target_index:]
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description='Manipulate path variables.')
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parser.add_argument(
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'paths',
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metavar='PATH',
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type=str,
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nargs='*',
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help='paths to add',
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)
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parser.add_argument(
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'--path-var',
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help='the path var to add to.',
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default='PATH',
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)
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parser.add_argument(
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'--separator',
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help='the separator of the path variable',
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default=':',
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)
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parser.add_argument(
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'--path-string',
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help='the path string to edit',
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default=None,
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)
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parser.add_argument(
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'--after',
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help=('whether to do the action after the target (if target is specified)'
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'or the entire path variable'),
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action='store_true',
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default=True,
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)
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parser.add_argument(
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'--before',
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help='inverse of after',
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dest='after',
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action='store_false',
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)
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parser.add_argument(
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'--target',
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help='the target path',
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default=None
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)
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parser.add_argument(
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'--include-assignment',
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action='store_true',
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help='include the assignment command in output',
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)
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parser.add_argument(
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'--print-separator',
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help='separator to use for output',
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default=None,
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)
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parser.add_argument(
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'--path-lines',
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help='use newlines to separate path output',
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action='store_true',
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default=False,
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)
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args = parser.parse_args()
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path_string = args.path_string or os.environ.get(args.path_var, '')
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path_list = PathList.from_string(path_string, separator=args.separator)
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path_list.add(args.paths, after=args.after, target=args.target)
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output_separator = '\n' if args.path_lines else args.print_separator
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output_path = path_list.with_separator(separator=output_separator)
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if args.include_assignment:
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output = "export {}='{}'".format(args.path_var, output_path)
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else:
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output = output_path
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print(output)
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@ -7,26 +7,31 @@ function _source_shellenv_files {
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done
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}
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function add_to_path {
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local result=$($HOME/.lib/python/shell_path.py --include-assignment "$@")
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eval "$result"
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}
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function _setup_env {
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_path_helper
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idem_add_to_back_of_path "$HOME/.local/lib/python2.6/site-packages"
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idem_add_to_back_of_path "$HOME/.rvm/bin"
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idem_add_to_front_of_path "$HOME/bin"
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hash brew 2>/dev/null && idem_add_to_front_of_path "$(brew --prefix coreutils)/libexec/gnubin"
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idem_add_to_front_of_path "/usr/local/bin"
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add_to_path "$HOME/.local/lib/python2.6/site-packages" --after
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add_to_path "$HOME/.rvm/bin" --after
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add_to_path "$HOME/bin"
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hash brew 2>/dev/null && add_to_path "$(brew --prefix coreutils)/libexec/gnubin"
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add_to_path "/usr/local/bin"
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idem_add_to_back_of_path `python -c 'import sysconfig; print sysconfig.get_path("scripts")'`
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add_to_path $(python -c 'import sysconfig; print sysconfig.get_path("scripts")') --before
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if is_osx; then
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export CFLAGS=-Qunused-arguments
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export CPPFLAGS=-Qunused-arguments
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idem_add_to_back_of_path "/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources"
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add_to_path "/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources" --after
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local JDK_LOCATION="$(find /Library/Java/JavaVirtualMachines -depth 1 | head -n 1)"
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export JAVA_HOME="$JDK_LOCATION/Contents/Home"
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export STUDIO_JDK=$JDK_LOCATION
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export GRADLE_HOME="$(brew --prefix gradle)"
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export ANDROID_HOME="$(brew --prefix android-sdk)"
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idem_add_to_back_of_path "$ANDROID_HOME"
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add_to_path "$ANDROID_HOME" --after
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# Access gnu man pages.
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hash brew 2> /dev/null && export MANPATH="$(brew --prefix)/opt/coreutils/libexec/gnuman:$MANPATH"
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@ -35,10 +40,10 @@ function _setup_env {
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is_osx && export VISUAL="which emacsclient -c -n"
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fi
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idem_add_to_front_of_path "$JAVA_HOME/bin"
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add_to_path "$JAVA_HOME/bin"
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idem_add_to_back_of_path "$HOME/.lib/python"
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idem_add_to_back_of_path "/usr/local/sbin"
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add_to_path "$HOME/.lib/python" --after
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add_to_path "/usr/local/sbin" --after
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# Load RVM into a shell session *as a function*
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[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"
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@ -54,18 +59,18 @@ function _setup_env {
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[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh" # This loads nvm
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export NODE_PATH="/usr/local/lib/node_modules/"
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idem_add_to_front_of_path "$HOME/.local/bin"
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idem_add_to_front_of_path "$HOME/.lib/python" 'PYTHONPATH'
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add_to_path "$HOME/.local/bin"
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add_to_path "$HOME/.lib/python" --path-var 'PYTHONPATH'
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idem_add_to_front_of_path "$HOME/go" 'GOPATH'
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idem_add_to_front_of_path "${GOPATH//://bin:}/bin"
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add_to_path "$HOME/go" --path-var 'GOPATH'
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add_to_path "${GOPATH//://bin:}/bin"
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export RBENV_ROOT=/usr/local/var/rbenv
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idem_add_to_front_of_path "$HOME/.rbenv/bin"
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add_to_path "$HOME/.rbenv/bin"
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hash rbenv 2> /dev/null && eval "$(rbenv init -)"
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hash brew 2>/dev/null && idem_add_to_front_of_path "$(brew --prefix coreutils)/libexec/gnubin"
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hash brew 2>/dev/null && add_to_path "$(brew --prefix coreutils)/libexec/gnubin"
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idem_add_to_front_of_path "$HOME/.lib/bin"
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add_to_path "$HOME/.lib/bin"
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export ENVIRONMENT_SETUP_DONE="$(date)"
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}
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@ -1,46 +1,5 @@
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function path_lines {
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target=${1-PATH}
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if is_zsh; then
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echo ${(P)target} | tr ':' '\n'
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else
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echo ${!target} | tr ':' '\n'
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fi
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}
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function _add_to_front_of_path_lines {
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target=${2-PATH}
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echo $1
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path_lines $target | grep -Ev "^$1$"
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}
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function _add_to_back_of_path_lines {
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target=${2-PATH}
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path_lines $target | grep -Ev "^$1$"
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echo $1
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}
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function remove_trailing_colon {
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sed 's|:*$||'
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}
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function add_to_front_of_path {
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target=${2-PATH}
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export $target="$(_add_to_front_of_path_lines $1 $target | tr '\n' ':' | remove_trailing_colon)"
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}
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function add_to_back_of_path {
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target=${2-PATH}
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export $target="$(_add_to_back_of_path_lines $1 $target | tr '\n' ':' | remove_trailing_colon)"
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}
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function idem_add_to_front_of_path {
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target=${2-PATH}
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exists_in_path_var $1 $target || add_to_front_of_path $1 $target
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}
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function idem_add_to_back_of_path {
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target=${2-PATH}
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exists_in_path_var $1 $target || add_to_back_of_path $1 $target
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shell_path.py --path-lines "$@"
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}
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function indirect_expand {
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