agp

Simple implementation of command line argument parsing. There are two kinds of flags, with and without arguments. Each flag can have a short and long name. You can (should) also assign a default option when the program is invoked without flags. The meaning of this library is simplicity and clarity.

To use it, you need to include a header file and add an object file to the linker. Next, need to declare the necessary variables and describe the structure with options.

  /* for arguments */
  int a_a;
  int a_b;
  int a_c;
  int a_d;
  int a_e;
  int a_f;
  int a_h;
  const char *v_d[AGP_MAX_ARG];
  const char *v_e[AGP_MAX_ARG];
  const char *v_f[AGP_MAX_ARG];

  /* options description */
  t_agp_options argopt[] = {
    /* flag-short flag-long exist-var var description */
    AGP_INFO("Usage:"),
    AGP_INFO(""),
    AGP_INFO("Options without arguments:"),
    AGP_BOOL(a, bool-a, &a_a,      "bool (a)"),
    AGP_BOOL(b, -,      &a_b,      "bool (b)"),
    AGP_BOOL(-, bool-c, &a_c,      "bool (c)"),
    AGP_INFO("Options with arguments:"),
    AGP_STR(d,  str-d,  &a_d, v_d, "strings (d)"),
    AGP_STR(e,  -,      &a_e, v_e, "strings (e)"),
    AGP_STR(-,  str-f,  &a_f, v_f, "strings (f)"),
    AGP_INFO("Default argument:"),
    AGP_DEF(-,  -,      &a_d, v_d, "default (d)"),
    AGP_INFO("For help:"),
    AGP_BOOL(h, help,   &a_h,      "print help (h)"),
    AGP_END(),
  };

And(Returns zero on success and one on error).

  int ret = agp_parse(argopt, argc, argv);

Check all variables a_* in a loop. If the flag was set, then their value is non-zero and in options with string arguments, variables v_* contain references to the passed arguments.

Source of inspiration: cofyc/argparse