2 process command line, GNU style.
4 this is Copyleft (c) 1996--2003 Han-Wen Nienhuys, <hanwen@cs.uu.nl>
15 #include "getopt-long.hh"
16 #include "international.hh"
17 #include "string-convert.hh"
22 gettext (char const* s)
31 Getopt_long::get_argument_index ()
34 if (!optional_argument_str0_
35 || sscanf (optional_argument_str0_, "%ld", &l) != 1)
36 report (E_ILLEGALARG);
41 const Long_option_init *
42 Getopt_long::parselong ()
44 char const *optnm = arg_value_char_a_a_[array_index_] + 2 ;
47 char const *endopt = strchr (optnm, '=');
48 int searchlen = (endopt) ? endopt - optnm : strlen (optnm);
51 for (int i=0; i< table_len_; i++)
53 char const *ln = option_a_[i].longname_str0_;
55 if (ln && !strncmp (ln, optnm, searchlen))
57 found_option_ = option_a_+i;
64 report (E_UNKNOWNOPTION);
71 if (found_option_->take_arg_str0_)
74 optional_argument_str0_ = endopt +1; // a '='
77 optional_argument_str0_ = arg_value_char_a_a_[array_index_];
80 if (!optional_argument_str0_)
86 optional_argument_str0_ = 0;
88 report (E_NOARGEXPECT);
95 Long_option_init::to_string () const
99 str += "-" + shortname_char_;
100 if (shortname_char_ && longname_str0_)
103 str += String ("`--") + longname_str0_ + "'";
108 Long_option_init::str_for_help () const
112 s = "-" + ::to_string (shortname_char_);
116 s = s + ((shortname_char_ && longname_str0_) ? ", " : " ");
119 s = s + "--" + longname_str0_;
128 s = s + gettext (take_arg_str0_);
133 // report an error, GNU style.
135 Getopt_long::report (Errorcod c)
141 String str = arg_value_char_a_a_[0];
146 str += _f ("option `%s' requires an argument",
147 found_option_->to_string ());
150 str += _f ("option `%s' doesn't allow an argument",
151 found_option_->to_string ());
153 case E_UNKNOWNOPTION:
154 str += _f ("unrecognized option: `%s'",
155 String (argument_index_
156 ? String ("-" + String_convert::form_string ("%c",
157 arg_value_char_a_a_[array_index_][argument_index_]))
158 : String (arg_value_char_a_a_[array_index_])));
161 str += _f ("invalid argument `%s' to option `%s'",
162 optional_argument_str0_, found_option_->to_string ());
167 fprintf(error_out_, "%s\n", str.to_str0 ());
171 const Long_option_init *
172 Getopt_long::parseshort ()
174 char c=arg_value_char_a_a_[array_index_][argument_index_];
178 for (int i=0; i < table_len_; i++)
179 if (option_a_[i].shortname_char_ == c)
181 found_option_ = option_a_+i;
187 report (E_UNKNOWNOPTION);
192 if (!found_option_->take_arg_str0_)
194 optional_argument_str0_ = 0;
195 return found_option_;
197 optional_argument_str0_ = arg_value_char_a_a_[array_index_] + argument_index_;
202 if (!optional_argument_str0_[0])
204 optional_argument_str0_ = arg_value_char_a_a_[array_index_];
207 if (!optional_argument_str0_)
209 report (E_ARGEXPECT);
212 return found_option_;
215 const Long_option_init *
216 Getopt_long::operator () ()
226 return parseshort ();
228 const char * argument = arg_value_char_a_a_[array_index_];
230 if (argument[0] != '-')
233 if (argument[1] == '-') {// what to do with "command -- bla"
244 return parseshort ();
255 Getopt_long::Getopt_long (int c, char **v, Long_option_init *lo)
259 arg_value_char_a_a_ = v;
264 // reached end of option table?
266 for (int i = 0; option_a_[i].longname_str0_ ||option_a_[i].shortname_char_; i++)
272 Getopt_long::ok () const
274 return array_index_ < argument_count_;
281 while (array_index_ < argument_count_
282 && !arg_value_char_a_a_[array_index_][argument_index_])
290 Getopt_long::current_arg ()
292 if (array_index_ >= argument_count_)
294 char const * a = arg_value_char_a_a_[array_index_];
295 return a + argument_index_;
299 Getopt_long::get_next_arg ()
301 char const * a = current_arg ();
311 const int EXTRA_SPACES = 5;
314 Long_option_init::table_string (Long_option_init *l)
316 String argstr = "ARG";
320 for (int i=0; l[i].shortname_char_ || l[i].longname_str0_; i++)
322 wid = wid >? l[i].str_for_help ().length ();
325 for (int i=0; l[i].shortname_char_ || l[i].longname_str0_; i++)
327 String s = " " + l[i].str_for_help ();
328 s += String_convert::char_string (' ', wid - s.length () + EXTRA_SPACES);
330 tabstr += s + gettext (l[i].help_str0_) + "\n";
338 Long_option_init::compare (Long_option_init const &a, Long_option_init const &b)
340 if (a.shortname_char_ && b.shortname_char_ && a.shortname_char_- b.shortname_char_)
341 return a.shortname_char_ - b.shortname_char_;
343 if (b.shortname_char_ && a.longname_str0_)
345 char s[2] = {b.shortname_char_, 0};
346 return strcmp (a.longname_str0_, s);
348 if (a.shortname_char_ && b.longname_str0_)
350 char s[2] = {a.shortname_char_, 0};
351 return strcmp (s, b.longname_str0_);
354 return strcmp (a.longname_str0_, b.longname_str0_);