text: /*                        I N I T . C P P
   * progpath
   *
   * Copyright (c) 2021 Christopher Sean Morrison
   *
   * Permission is hereby granted, free of charge, to any person
   * obtaining a copy of this software and associated documentation
   * files (the "Software"), to deal in the Software without
   * restriction, including without limitation the rights to use, copy,
   * modify, merge, publish, distribute, sublicense, and/or sell copies
   * of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
   * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
   * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   */
  
  #include "./progpath_config.h"
  #include "./progpath.h"
  
  /* use any method at our disposal */
  #define _GNU_SOURCE 1
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <assert.h>
  
  #ifdef HAVE_SYS_PARAM_H /* for MAXPATHLEN */
  #  include <sys/param.h>
  #endif
  #ifdef HAVE_UNISTD_H
  #  include <unistd.h>
  #endif
  #ifdef HAVE_WINDOWS_H
  #  include <windows.h>
  #endif
  
  
  #ifndef MAXPATHLEN
  #  ifdef PATH_MAX
  #    define MAXPATHLEN PATH_MAX
  #  else
  #    define MAXPATHLEN 4096
  #  endif
  #endif
  
  
  extern char progpath_ipwd[];
  
  
  void progpath_init(void) {
    if (progpath_ipwd[0] != '\0')
      return;
  
    progipwd(progpath_ipwd, MAXPATHLEN);
  }
  
  
  struct progpath_initializer {
    /* constructor */
    progpath_initializer() {
      progpath_init();
    }
    /* destructor */
    ~progpath_initializer() {
    }
  };
  
  static progpath_initializer pp;
  