view lib/help.c @ 1101:ccf4193167c3 draft

Make the patch -x option (only enabled with CONFIG_DEBUG) provide more information about why a patch didn't apply. (Offset of first nonmatching character at each line during seek phase.)
author Rob Landley <>
date Thu, 31 Oct 2013 09:36:55 -0500
parents c5e80c74ec6c
children c51a4dbe5db7
line wrap: on
line source

// Function to display help text

#include "toys.h"

void show_help(void) {;}
#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);