libtu/optparser.h

   1 /*
   2  * libtu/optparser.h
   3  *
   4  * Copyright (c) Tuomo Valkonen 1999-2004.
   5  *
   6  * You may distribute and modify this library under the terms of either
   7  * the Clarified Artistic License or the GNU LGPL, version 2.1 or later.
   8  */
   9
  10 #ifndef LIBTU_OPTPARSER_H
  11 #define LIBTU_OPTPARSER_H
  12
  13 #include "types.h"
  14
  15
  16 #define OPT_ID_NOSHORT_FLAG 0x10000
  17 #define OPT_ID_RESERVED_FLAG 0x20000
  18
  19 #define OPT_ID(X)            ((X)|OPT_ID_NOSHORT_FLAG)
  20 #define OPT_ID_RESERVED(X)    ((X)|OPT_ID_RESERVED_FLAG)
  21
  22 /* OPTP_CHAIN is the normal behavior, i.e. single-letter options can be
  23  *        "chained" together: 'lr -lR'. Use for normal command line programs.
  24  * OPTP_MIDLONG allows '-display foo' -like args but disables chaining
  25  *         of single-letter options. X programs should probably use this.
  26  * OPTP_IMMEDIATE allows immediate arguments (-I/usr/include) (and disables
  27  *        chaining and midlong options).
  28  * OPTP_NO_DASH is the same as OPTP_CHAIN but allows the dash to be omitted
  29  *         for 'tar xzf foo' -like behavior.
  30  * Long '--foo=bar' options are supported in all of the modes.
  31  */
  32
  33 enum{
  34     OPTP_CHAIN=0,
  35     OPTP_DEFAULT=0,
  36     OPTP_MIDLONG=1,
  37     OPTP_IMMEDIATE=2,
  38     OPTP_NO_DASH=3
  39 };
  40
  41 enum{
  42     OPT_ARG=1,                    /* option has an argument                    */
  43     OPT_OPT_ARG=3                /* option may have an argument                */
  44 };
  45
  46
  47 #define END_OPTPARSEROPTS {0, NULL, 0, NULL, NULL}
  48
  49 typedef struct _OptParserOpt{
  50     int optid;
  51     const char *longopt;
  52     int    flags;
  53     const char *argname;
  54     const char *descr;
  55 } OptParserOpt;
  56
  57 enum{
  58     OPT_ID_END=0,
  59     OPT_ID_ARGUMENT=1,
  60
  61     E_OPT_INVALID_OPTION=-1,
  62     E_OPT_INVALID_CHAIN_OPTION=-2,
  63     E_OPT_SYNTAX_ERROR=-3,
  64     E_OPT_MISSING_ARGUMENT=-4,
  65     E_OPT_UNEXPECTED_ARGUMENT=-5
  66 };
  67
  68
  69 extern void optparser_init(int argc, char *const argv[], int mode,
  70                            const OptParserOpt *opts);
  71
  72 extern void optparser_printhelp(int mode, const OptParserOpt *opts);
  73
  74 extern int  optparser_get_opt();
  75 extern const char* optparser_get_arg();
  76 extern void optparser_print_error();
  77
  78 #endif /* LIBTU_OPTPARSER_H */