view lib/help.c @ 1433:00c20f410c46 draft

Patches to commands for issues reported from static analysis tool. portability.h.patch - it is for O_CLOEXEC, as compiler complained of it. Makefile.patch - for cleaning generated/*.o files and libopts.dat file [Fixup to uniq.c from Rob.]
author Ashwini Sharma <ak.ashwini1981@gmail.com>
date Tue, 12 Aug 2014 07:09:01 -0500
parents c5e80c74ec6c
children c51a4dbe5db7
line wrap: on
line source

// Function to display help text

#include "toys.h"

#if !CFG_TOYBOX_HELP
void show_help(void) {;}
#else
#include "generated/help.h"

#undef NEWTOY
#undef OLDTOY
#define NEWTOY(name,opt,flags) help_##name "\0"
#define OLDTOY(name,oldname,opts,flags) "\xff" #oldname "\0"
static char *help_data =
#include "generated/newtoys.h"
;

void show_help(void)
{
  int i = toys.which-toy_list;
  char *s;

  for (;;) {
    s = help_data;
    while (i--) s += strlen(s) + 1;
    // If it's an alias, restart search for real name
    if (*s != 255) break;
    i = toy_find(++s)-toy_list;
  }

  fprintf(toys.exithelp ? stderr : stdout, "%s", s);
}
#endif