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‎MIT License.md‎

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MIT License
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Copyright (c) 2022 Timothy C. Quinn <javascriptdude [at] protonmail.com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.

‎README.MD‎

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## Python Src Run
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Tool for generating and invoking of python sources that does not require installation in python libraries
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Supports executing code as user and as root (eg as cron tasks). Tooled to leverage a separate python environment from the systems python, therefore allow userland applications to have flexibility of library installation without conflicting with the base systems python environment; as is best practice.
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## Applications
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When a project is in alpha state, its often not ready to be packaged in PyPi for the main stream. Secondly, sometimes the process for packaging a python application to make it easy to deploy in production environments can be challenging. This tool offers a bridge to allow tools be be developed and tested without having to deal with packaging and installation by allowing them to be run directly from source.
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## Project Install File
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Each project that uses this toolset, will have a <mod>_install.sh in its root file similar to the following:
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```
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#!/bin/bash
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# % cd <this directory>
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# % . ./pynx_install.sh
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. ~/.py_src_run/make_mod_exe.sh "pynx" "/usr/bin" "lib,foo/bar"
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```
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This above example will deploy an executable called `pynx` to `/usr/bin`, It will also include in PYTHONPATH <project_root>/lib and <project_root>/foo/bar
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By deploying to `/usr/bin`, the program can be invoked using sudo, which in the case of `pynx`, su is required as its for managing `nginx` and `wsgi`.
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## Files
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| Name | Deployed Name | Description |
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| py_src_run.sh | run.sh | Backend invocation script. No modification required |
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| make_mod_exe.sh | (same) | script for generating executable. No modification required |
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| pyinit.sh | (same) | script to set up python environment. Configuration is required |
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Files are deployed to ~/.py_src_run/
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Python environment used is suggested to be installed via `pyenv` but virtual env's could be used in theory. Virutal env's have not been tested yet as `pyenv` is the developers prefered mechanism for desktops and production server python deployments.
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## src directory
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This design assumes that the python project has a src directory in the root of the file structure as is recommended by most modern documentation on python project setup.
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## Installation
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Download the sources
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For each of `py_src_run.sh`, `make_mod_exe.sh` and `pyinit.sh` install by either following instructions in header of each file or run the following in a `bash shell`:
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```
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_P=py_src_run
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mkdir ~/.${_P}
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cp ./$_P.sh ~/.$_P/run.sh && chmod a+x ~/.$_P/run.sh
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_C=make_mod_exe && cp ./$_C.sh ~/.$_P/$_C.sh && chmod a+x ~/.$_P/$_C.sh
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_C=pyinit && cp ./$_C.sh ~/.$_P/$_C.sh
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```
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## Configuration
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Besides generating a install script for any project you want to install, you must modify `~/.py_run_src/pyinit.sh`
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This file will initialze the python environment
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‎make_mod_exe.sh‎

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#!/bin/bash
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# .: make_mod_exe.sh :.
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# Executable creator script
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# Author: Timothy C. Quinn
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# Home: https://github.com/JavaScriptDude/py_src_run
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# .: Installation :.
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# note: install py_src_run.sh first
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# % _C=make_mod_exe _D=~/.py_src_run && cp ./${_C}.sh $_D/${_C}.sh && chmod a+x $_D/${_C}.sh
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PROJ_ROOT=`pwd`
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ERR=""
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if [[ "$#" == "" ]]; then
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ERR="Invalid args. Expecting <module> <target_bin_dir>"
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else
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user_is_root () { [ ${EUID:-$(id -u)} -eq 0 ]; }
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if (user_is_root) ; then
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ERR="Do not run this as root or sudo"
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fi
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fi
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# Module name
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if [[ $ERR == "" ]]; then
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MOD=${1}
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SRCDIR="$PROJ_ROOT/src"
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_MOD_CHK=`echo $MOD | sed 's/\s*//g' | sed 's/\\n//g'`
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if [[ "$MOD" != "$_MOD_CHK" ]]; then # No spaces etc.
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ERR="Module must not have spaces in name. Got: \'$MOD\'"
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elif [[ "$MOD" == "" ]]; then # Not empty
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ERR="Module variable must not be blank!"
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elif [ ! -d "$SRCDIR" ]; then
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ERR="src directory not found: \'$SRCDIR\'"
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elif [ ! -d "$SRCDIR/$MOD" ]; then # verify pwd and mod is correct
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ERR="This script must be run from project root (parent of src)"
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fi
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fi
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# Bin path
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if [[ $ERR == "" ]]; then
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BINPATH=$2
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# remove trailing slash
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BINPATH=$(dirname "$BINPATH/x")
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# verify path exists
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if [ ! -d "$BINPATH" ]; then
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ERR="Directory ($BINPATH) does not exist. Please create if needed"
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fi
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fi
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# Check alternate includes
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if [[ $ERR == "" ]]; then
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ALT_INCL_STR=""
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ALTINCL_ALL=$3
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if [[ "$ALTINCL_ALL" != "" ]]; then
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readarray -d , -t INCL_PATHS<<< "$ALTINCL_ALL"
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for ((i=${#INCL_PATHS[@]}-1; i>=0; i--)); do
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INCL_PATH=${INCL_PATHS[$i]}
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INCL_PATH=`echo $INCL_PATH | sed 's/\s*//g' | sed 's/\\n//g'`
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if [[ $ERR == "" ]]; then
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# Verify each path
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INCL_PATH_FULL=$PROJ_ROOT/$INCL_PATH
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if [ ! -d $INCL_PATH_FULL ]; then # verify incl directory exists
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ERR="Include directory provided ($INCL_PATH_FULL) does not exist"
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else
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ALT_INCL_STR="\$PROJ_ROOT/${INCL_PATH}:${ALT_INCL_STR}"
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# echo \'$ALT_INCL_STR\'
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fi
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fi
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done
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fi
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fi
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# Verify exe (don't clobber)
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if [[ $ERR == "" ]]; then
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BINPATH_FULL=$BINPATH/$MOD
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if [ -f "$BINPATH_FULL" ]; then # don't clobber
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ERR="Module executable $BINPATH_FULL already exists. Please remove first before running"
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fi
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fi
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SUDO=0
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write_line () {
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if [ $SUDO -eq "1" ]; then
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echo $1 | sudo tee -a "$BINPATH_FULL" >/dev/null
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else
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echo $1 | tee -a "$BINPATH_FULL" >/dev/null
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fi
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}
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# Create executable
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if [[ $ERR == "" ]]; then
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# touch file
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if [ ! -w "$BINPATH" ]; then
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SUDO=1
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echo "About to create script $BINPATH_FULL. May need pwd..."
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sudo touch "$BINPATH_FULL"
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else
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touch "$BINPATH_FULL"
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fi
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write_line "PROJ_ROOT=$PROJ_ROOT"
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# PYTHONPATH (if applicable)
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if [[ "$ALT_INCL_STR" != "" ]]; then
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write_line "export PYTHONPATH=$ALT_INCL_STR\$PYTHONPATH"
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fi
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# run.sh
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write_line "$HOME/.py_src_run/run.sh \"\$PROJ_ROOT/src\" $MOD \"\$@\""
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# chmod +x
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if [ $SUDO -eq "1" ]; then
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sudo chmod a+x "$BINPATH_FULL"
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else
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chmod a+x "$BINPATH_FULL"
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fi
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echo "Executable created: $BINPATH_FULL"
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else
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echo "make_mod_exe.sh failed - $ERR"
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echo " . CLI Args: \'$@\'"
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fi

‎py_src_run.sh‎

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#!/bin/bash
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# .: py_src_run.sh (run.sh) :.
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# Main backend invokation script
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# Author: Timothy C. Quinn
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# Home: https://github.com/JavaScriptDude/py_src_run
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# .: Installation :.
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#% mkdir ~/.py_src_run
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#% _C=py_src_run _D=~/.${_C} && cp ./${_C}.sh $_D/run.sh && chmod a+x $_D/run.sh
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PYINITERR=""
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if [ "$#" -lt "2" ]; then
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PYINITERR="Invalid args. Expecting <scr_path> <module> [<program_arg1>, ...]"
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fi
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# Parse Module Src Path
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if [[ $PYINITERR == "" ]]; then
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MSPATH="$1"
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if [ ! -d "$MSPATH" ]; then
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PYINITERR="Module path provided to py_run_as_root does not exist: ${MSPATH}"
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fi
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fi
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# Parse Module
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if [[ $PYINITERR == "" ]]; then
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MOD="$2"
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if [ ! -d "$MSPATH/$MOD" ]; then
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PYINITERR="Module provided to py_run_as_root does not exist: $MSPATH/$MOD"
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fi
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fi
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# Get HOME and pyinit.sh location
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if [[ $PYINITERR == "" ]]; then
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SCRP="$0"
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SCR_FILE=`basename $SCRP`
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PYRUNDIR=`dirname $SCRP`
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readarray -d / -t a<<< "$PYRUNDIR"
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PERR=0
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PERRMSG=""
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if [ "${#a[@]}" != "4" ]; then
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PERR=1
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elif [[ "${a[0]}" != "" ]]; then
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PERR=1
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elif [[ "${a[1]}" != "home" ]]; then
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PERR=1
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else
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export HOME=/home/${a[2]}
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LASTP=${a[3]}
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if [[ "${LASTP:0:11}" != ".py_src_run" ]]; then
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PERR=1
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else
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# Verify that pyinit.sh exists
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if [ ! -f "$PYRUNDIR/pyinit.sh" ]; then
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PERR=1
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PERRMSG="pyinit init script is missing: '$PYRUNDIR/pyinit.sh'"
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fi
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fi
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fi
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if [ $PERR == 1 ]; then
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if [[ "$PERRMSG" != "" ]]; then
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PYINITERR=$PERRMSG
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else
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PYINITERR="Invalid path for py_src_run.sh. Expecting /home/<user>/.py_src_run/run.sh but got ${SCR_DIR}"
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fi
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fi
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fi
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if [[ $PYINITERR == "" ]]; then
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# source pyinit script
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source $PYRUNDIR/pyinit.sh
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fi
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if [[ $PYINITERR == "" ]]; then
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# Add module path to PYTHONPATH
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export PYTHONPATH=${MSPATH}:${PYTHONPATH}
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# strip first two cli args
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shift 2
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if [ 0 -eq 1 ]; then # debug
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echo FOO=\'$FOO\'
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echo MSPATH=\'$MSPATH\'
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echo MOD=\'$MOD\'
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echo MOD Args=\'$@\'
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echo HOME=\'$HOME\'
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echo PATH=\'$PATH\'
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echo PYTHONPATH=\'$PYTHONPATH\'
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echo PY_EXE=`python -c "import sys; print(sys.executable);"`
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fi
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# Execute
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python -m $MOD "$@"
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else
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echo "py_run_from_src.sh failed - $PYINITERR"
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echo " . CLI Args: '$@'"
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fi

‎pyinit.sh‎

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#!/bin/bash
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# .: pyinit.sh :.
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# Python environment initialization for py_src_run invocations
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# Author: Timothy C. Quinn
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# Home: https://github.com/JavaScriptDude/py_src_run
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# .: Installation :.
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# note: install py_src_run.sh first
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#% _C=pyinit _D=~/.py_src_run && cp ./${_C}.sh $_D/${_C}.sh
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# Modify as required
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# Example for pyenv
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export _PYVER=3.7.9
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export PATH=${HOME}/.pyenv/versions/${_PYVER}/bin/:${PATH}

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