setup.py

import sublime
import sublime_plugin
import os
import subprocess
import importlib

from . import utils

build_dir_request = {
    'arg': "build_dir", 
    'placeholder': 'Build directory path',
}

prefix_request = {
    'arg': "prefix", 
    'placeholder': 'Prefix (Leave blank for default value)',
}

importlib.import_module('Meson')

class MesonSetupInputHandler(sublime_plugin.TextInputHandler):
    def __init__(self, request):
        self._name = request["arg"]
        self._placeholder = request["placeholder"]

    def name(self):
        return self._name

    def placeholder(self):
        return self._placeholder

    def validate(self, value):
        if self._name == "prefix":
            return True

        return len(value.strip()) > 0

class MesonSetupCommand(sublime_plugin.WindowCommand):
    def run(self, prefix, build_dir):
        self.build_dir = build_dir
        self.build_config_path = utils.build_config_path()
        if self.build_config_path is None:
            return

        if len(prefix) < 1:
            self.prefix = None
        else:
            self.prefix = prefix

        sublime.set_timeout_async(self.__run_async, 0)

    def __run_async(self):
        command_args = [utils.MESON_BINARY, 'setup']
        if self.prefix is not None:
            command_args.append("--prefix=" + self.prefix)

        command_args.append(self.build_dir)

        def cmd_action(panel, env):
            process = subprocess.Popen(" ".join(command_args), stdout = subprocess.PIPE, shell = True, cwd = utils.project_folder(), env = env, bufsize = 0)
            if process:
                process.stdout.flush()
                for line in iter(process.stdout.readline, b''):
                    panel.run_command('append', {'characters': line.decode('utf-8'), "force": True, "scroll_to_end": True})
                    process.stdout.flush()
                
                process.communicate()

            if process.returncode == 0:
                utils.display_status_message("Project created successfully")
            else:
                utils.display_status_message("Project failed to be created, please" +
                    " refer to output panel")

        utils.update_output_panel(lambda panel, env: cmd_action(panel, env))

    def input(self, args):
        input_requests = []
        if "build_dir" not in args:
            input_requests.append(build_dir_request)

        if "prefix" not in args:
            input_requests.append(prefix_request)
        
        for input_request in input_requests:
            return MesonSetupInputHandler(input_request)