C++ Nibbler::skip方法代码示例

////////////////////////////////////////////////////////////////////////////////
// Enumerate all hooks, and tell API about the script files it must load in
// order to call them.  Note that API will perform a deferred read, which means
// that if it isn't called, a script will not be loaded.
void Hooks::initialize ()
{
#ifdef HAVE_LIBLUA
  _api.initialize ();
#endif

  // Allow a master switch to turn the whole thing off.
  bool big_red_switch = context.config.getBoolean ("extensions");
  if (big_red_switch)
  {
    std::vector <std::string> vars;
    context.config.all (vars);

    std::vector <std::string>::iterator it;
    for (it = vars.begin (); it != vars.end (); ++it)
    {
      std::string type;
      std::string name;
      std::string value;

      // "<type>.<name>"
      Nibbler n (*it);
      if (n.getUntil ('.', type) &&
          type == "hook"         &&
          n.skip ('.')           &&
          n.getUntilEOS (name))
      {
        std::string value = context.config.get (*it);
        Nibbler n (value);

        // <path>:<function> [, ...]
        while (!n.depleted ())
        {
          std::string file;
          std::string function;
          if (n.getUntil (':', file) &&
              n.skip (':')           &&
              n.getUntil (',', function))
          {
            context.debug (std::string ("Event '") + name + "' hooked by " + file + ", function " + function);
            Hook h (name, Path::expand (file), function);
            _all.push_back (h);

            (void) n.skip (',');
          }
          else
            throw std::string (format (STRING_LUA_BAD_HOOK_DEF, *it));
        }
      }
    }
  }
  else
    context.debug ("Hooks::initialize --> off");
}

////////////////////////////////////////////////////////////////////////////////
// A Path and a Subst may look similar, and so the rule is that if a Subst looks
// like a path, it must also not exist in the file system in order to actually
// be a Subst.
bool Subst::valid (const std::string& input) const
{
  std::string ignored;
  Nibbler n (input);
  if (n.skip     ('/')            &&
      n.getUntil ('/', ignored)   &&
      n.skip     ('/')            &&
      n.getUntil ('/', ignored)   &&
      n.skip     ('/'))
  {
    n.skip ('g');
    if (n.depleted ())
      return ! Directory (input).exists ();
  }

  return false;
}

////////////////////////////////////////////////////////////////////////////////
// Enumerate all hooks, and tell API about the script files it must load in
// order to call them.  Note that API will perform a deferred read, which means
// that if it isn't called, a script will not be loaded.
void Hooks::initialize ()
{
  // Allow a master switch to turn the whole thing off.
  bool big_red_switch = context.config.getBoolean ("extensions");
  if (big_red_switch)
  {
    Config::const_iterator it;
    for (it = context.config.begin (); it != context.config.end (); ++it)
    {
      std::string type;
      std::string name;
      std::string value;

      // "<type>.<name>"
      Nibbler n (it->first);
      if (n.getUntil ('.', type) &&
          type == "hook"         &&
          n.skip ('.')           &&
          n.getUntilEOS (name))
      {
        Nibbler n (it->second);

        // <path>:<function> [, ...]
        while (!n.depleted ())
        {
          std::string file;
          std::string function;
          if (n.getUntil (':', file) &&
              n.skip (':')           &&
              n.getUntil (',', function))
          {
            context.debug (std::string ("Event '") + name + "' hooked by " + file + ", function " + function);
            Hook h (name, Path::expand (file), function);
            _all.push_back (h);

            (void) n.skip (',');
          }
          else
            ; // Was: throw std::string (format ("Malformed hook definition '{1}'.", it->first));
        }
      }
    }
  }
  else
    context.debug ("Hooks::initialize --> off");
}

void Subst::parse (const std::string& input)
{
  Nibbler n (input);
  if (n.skip     ('/')        &&
      n.getUntil ('/', mFrom) &&
      n.skip     ('/')        &&
      n.getUntil ('/', mTo)   &&
      n.skip     ('/'))
  {
      mGlobal = n.skip ('g');

    if (mFrom == "")
      throw context.stringtable.get (SUBST_EMPTY,
                                     "Cannot substitute an empty string.");

    if (!n.depleted ())
      throw context.stringtable.get (SUBST_BAD_CHARS,
                                     "Unrecognized character(s) at end of substitution.");
  }
  else
    throw context.stringtable.get (SUBST_MALFORMED,
                                   "Malformed substitution.");
}

int main (int argc, char** argv)
{
#ifdef NIBBLER_FEATURE_DATE
#ifdef NIBBLER_FEATURE_REGEX
  UnitTest t (410);
#else
  UnitTest t (380);
#endif
#else
#ifdef NIBBLER_FEATURE_REGEX
  UnitTest t (346);
#else
  UnitTest t (322);
#endif
#endif

  // Ensure environment has no influence.
  unsetenv ("TASKDATA");
  unsetenv ("TASKRC");

  try
  {
    Nibbler n;
    std::string s;
    int i;
    double d;
    time_t ti;

#ifdef NIBBLER_FEATURE_DATE
    Date dt;
#endif
    std::vector <std::string> options;

    // Make sure the nibbler behaves itself with trivial input.
    t.diag ("Test all nibbler calls given empty input");
    n = Nibbler ("");
    t.notok (n.getUntil (' ', s),        "trivial: getUntil");
    t.notok (n.getUntil ("hi", s),       "trivial: getUntil");
    t.notok (n.getUntilOneOf ("ab", s),  "trivial: getUntilOneOf");
    t.notok (n.skipN (123),              "trivial: skipN");
    t.notok (n.skip ('x'),               "trivial: skip");
    t.notok (n.skipAll ('x'),            "trivial: skipAll");
    t.notok (n.skipAllOneOf ("abc"),     "trivial: skipAllOneOf");
    t.notok (n.backN (1),                "trivial: backN");
    t.notok (n.getQuoted ('"', s),       "trivial: getQuoted");
    t.notok (n.getDigit (i),             "trivial: getDigit");
    t.notok (n.getInt (i),               "trivial: getInt"); // 10
    t.notok (n.getUnsignedInt (i),       "trivial: getUnsignedInt");
    t.notok (n.getUntilEOL (s),          "trivial: getUntilEOL");
    t.notok (n.getUntilEOS (s),          "trivial: getUntilEOS");
    t.notok (n.getDateISO (ti),          "trivial: getDateISO");
#ifdef NIBBLER_FEATURE_DATE
    t.notok (n.getDate ("YYYYMMDD", ti), "trivial: getDate");
#endif
    t.notok (n.getOneOf (options, s),    "trivial: getOneOf");
    t.ok    (n.depleted (),              "trivial: depleted");

    // bool getUntil (char, std::string&);
    t.diag ("Nibbler::getUntil");
    n = Nibbler ("one two");
    t.ok    (n.getUntil (' ', s),        " 'one two' :       getUntil (' ')    -> true");
    t.is    (s, "one",                   " 'one two' :       getUntil (' ')    -> 'one'"); // 20
    t.ok    (n.getUntil (' ', s),        "    ' two' :       getUntil (' ')    -> true");
    t.is    (s, "",                      "    ' two' :       getUntil (' ')    -> ''");
    t.ok    (n.skip (' '),               "    ' two' :           skip (' ')    -> true");
    t.ok    (n.getUntil (' ', s),        "     'two' :       getUntil (' ')    -> 'two'");
    t.notok (n.getUntil (' ', s),        "        '' :       getUntil (' ')    -> false");
    t.ok    (n.depleted (),              "        '' :       depleted ()       -> true");

#ifdef NIBBLER_FEATURE_REGEX
    // bool getUntilRx (const std::string&, std::string&);
    t.diag ("Nibbler::getUntilRx");
    n = Nibbler ("one two");
    t.ok    (n.getUntilRx ("th", s),     " 'one two' :     getUntilRx ('th')   -> true");
    t.is    (s, "one two",               " 'one two' :     getUntilRx ('th')   -> 'one two'");

    n = Nibbler ("one two");
    t.ok    (n.getUntilRx ("e", s),      " 'one two' :     getUntilRx ('e')    -> true");
    t.is    (s, "on",                    " 'one two' :     getUntilRx ('e')    -> 'on'"); // 30
    t.ok    (n.getUntilRx ("tw", s),     "   'e two' :     getUntilRx ('tw')   -> true");
    t.is    (s, "e ",                    "   'e two' :     getUntilRx ('tw')   -> 'e '");
    t.ok    (n.getUntilRx ("$", s),      "     'two' :     getUntilRx ('$')    -> true");
    t.is    (s, "two",                   "     'two' :     getUntilRx ('$')    -> 'two'");
    t.ok    (n.depleted (),              "        '' :       depleted ()       -> true");
#endif

    // bool getUntilOneOf (const std::string&, std::string&);
    t.diag ("Nibbler::getUntilOneOf");
    n = Nibbler ("ab.cd");
    t.ok    (n.getUntilOneOf (".:", s),  "   'ab.cd' :  getUntilOneOf ('.:')   -> true");
    t.is    (s, "ab",                    "   'ab.cd' :  getUntilOneOf ('.:')   -> 'ab'");
    t.ok    (n.skipN (),                 "     '.cd' :          skipN ()       -> true");
    t.ok    (n.getUntilOneOf (".:", s),  "      'cd' :  getUntilOneOf ('.:')   -> true");
    t.notok (n.getUntilOneOf (".:", s),  "        '' :  getUntilOneOf ('.:')   -> false");
    t.ok    (n.depleted (),              "        '' :       depleted ()       -> true");

    // bool getUntil (const std::string&, std::string&);
    t.diag ("Nibbler::getUntil");
    n = Nibbler ("ab\r\ncd");
    t.ok (n.getUntil ("\r\n", s),     "'ab\\r\\ncd' :       getUntil ('\\r\\n') -> true");
//.........这里部分代码省略.........

////////////////////////////////////////////////////////////////////////////////
// Attempt an FF4 parse first, using Task::parse, and in the event of an error
// try a legacy parse (F3, FF2).  Note that FF1 is no longer supported.
//
// start --> [ --> Att --> ] --> end
//              ^       |
//              +-------+
//
void Task::parse (const std::string& input)
{
  std::string copy;
  if (input[input.length () - 1] == '\n')
    copy = input.substr (0, input.length () - 1);
  else
    copy = input;

  try
  {
    clear ();

    Nibbler n (copy);
    std::string line;
    if (n.skip     ('[')       &&
        n.getUntil (']', line) &&
        n.skip     (']')       &&
        n.depleted ())
    {
      if (line.length () == 0)
        throw std::string (STRING_RECORD_EMPTY);

      Nibbler nl (line);
      std::string name;
      std::string value;
      while (!nl.depleted ())
      {
        if (nl.getUntil (':', name) &&
            nl.skip (':')           &&
            nl.getQuoted ('"', value))
        {
          // Experimental legacy value translation of 'recur:m' --> 'recur:mo'.
          if (name == "recur" &&
              digitsOnly (value.substr (0, value.length () - 1)) &&
              value[value.length () - 1] == 'm')
            value += 'o';

          if (name.substr (0, 11) == "annotation_")
            ++annotation_count;

          (*this)[name] = decode (json::decode (value));
        }

        nl.skip (' ');
      }

      std::string remainder;
      nl.getUntilEOS (remainder);
      if (remainder.length ())
        throw std::string (STRING_RECORD_JUNK_AT_EOL);
    }
    else
      throw std::string (STRING_RECORD_NOT_FF4);
  }

  catch (const std::string&)
  {
    legacyParse (copy);
  }

  recalc_urgency = true;
}

//.........这里部分代码省略.........
    for (i = unrecognized.begin (); i != unrecognized.end (); ++i)
      out << "  " << *i << "\n";

    if (context.color ())
      out << "\n  " << format (STRING_CMD_SHOW_DIFFER_COLOR, error.colorize ("color"));

    out << "\n\n";
  }

  out << legacyCheckForDeprecatedVariables ();
  out << legacyCheckForDeprecatedColor ();
  out << legacyCheckForDeprecatedColumns ();

  // TODO Check for referenced but missing theme files.
  // TODO Check for referenced but missing string files.
  // TODO Check for referenced but missing tips files.

  // Check for referenced but missing hook scripts.
#ifdef HAVE_LIBLUA
  std::vector <std::string> missing_scripts;
  for (i = all.begin (); i != all.end (); ++i)
  {
    if (i->substr (0, 5) == "hook.")
    {
      std::string value = context.config.get (*i);
      Nibbler n (value);

      // <path>:<function> [, ...]
      while (!n.depleted ())
      {
        std::string file;
        std::string function;
        if (n.getUntil (':', file) &&
            n.skip (':')           &&
            n.getUntil (',', function))
        {
          Path script (file);
          if (!script.exists () || !script.readable ())
            missing_scripts.push_back (file);

          (void) n.skip (',');
        }
      }
    }
  }

  if (missing_scripts.size ())
  {
    out << STRING_CMD_SHOW_HOOKS << "\n";

    for (i = missing_scripts.begin (); i != missing_scripts.end (); ++i)
      out << "  " << *i << "\n";

    out << "\n";
  }
#endif

  // Check for bad values in rc.annotations.
  // TODO Deprecated.
  std::string annotations = context.config.get ("annotations");
  if (annotations != "full"   &&
      annotations != "sparse" &&
      annotations != "none")
    out << format (STRING_CMD_SHOW_CONFIG_ERROR, "annotations", annotations)
        << "\n";