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Made arg_parse more readable.
This commit is contained in:
Werner Koch
parent
df089498d8
commit
329509c864
33 changed files with 928 additions and 706 deletions
162
jnlib/argparse.h
162
jnlib/argparse.h
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@ -1,11 +1,11 @@
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/* argparse.h
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/* argparse.h - Argument parser for option handling.
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* Copyright (C) 1998,1999,2000,2001,2006 Free Software Foundation, Inc.
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*
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* This file is part of JNLIB.
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*
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* JNLIB is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 3 of
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* JNLIB is distributed in the hope that it will be useful, but
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@ -23,38 +23,142 @@
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#include <stdio.h>
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#include "types.h"
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typedef struct {
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int *argc; /* pointer to argc (value subject to change) */
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char ***argv; /* pointer to argv (value subject to change) */
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unsigned flags; /* Global flags (DO NOT CHANGE) */
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int err; /* print error about last option */
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/* 1 = warning, 2 = abort */
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int r_opt; /* return option */
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int r_type; /* type of return value (0 = no argument found)*/
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union {
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int ret_int;
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long ret_long;
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unsigned long ret_ulong;
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char *ret_str;
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} r; /* Return values */
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struct {
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int idx;
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int inarg;
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int stopped;
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const char *last;
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void *aliases;
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const void *cur_alias;
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} internal; /* DO NOT CHANGE */
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typedef struct
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{
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int *argc; /* Pointer to ARGC (value subject to change). */
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char ***argv; /* Pointer to ARGV (value subject to change). */
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unsigned int flags; /* Global flags. May be set prior to calling the
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parser. The parser may change the value. */
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int err; /* Print error description for last option.
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Either 0, ARGPARSE_PRINT_WARNING or
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ARGPARSE_PRINT_ERROR. */
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int r_opt; /* Returns option code. */
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int r_type; /* Returns type of option value. */
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union {
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int ret_int;
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long ret_long;
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unsigned long ret_ulong;
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char *ret_str;
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} r; /* Return values */
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struct {
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int idx;
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int inarg;
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int stopped;
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const char *last;
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void *aliases;
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const void *cur_alias;
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} internal; /* Private - do not change. */
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} ARGPARSE_ARGS;
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typedef struct {
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int short_opt;
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const char *long_opt;
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unsigned flags;
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const char *description; /* optional option description */
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typedef struct
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{
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int short_opt;
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const char *long_opt;
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unsigned int flags;
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const char *description; /* Optional option description. */
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} ARGPARSE_OPTS;
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/* Global flags (ARGPARSE_ARGS). */
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#define ARGPARSE_FLAG_KEEP 1 /* Do not remove options form argv. */
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#define ARGPARSE_FLAG_ALL 2 /* Do not stop at last option but return
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remaining args with R_OPT set to -1. */
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#define ARGPARSE_FLAG_MIXED 4 /* Assume options and args are mixed. */
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#define ARGPARSE_FLAG_NOSTOP 8 /* Do not stop processing at "--". */
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#define ARGPARSE_FLAG_ARG0 16 /* Do not skip the first arg. */
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#define ARGPARSE_FLAG_ONEDASH 32 /* Allow long options with one dash. */
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#define ARGPARSE_FLAG_NOVERSION 64 /* No output for "--version". */
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/* Flags for each option (ARGPARSE_OPTS). The type code may be
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ORed with the OPT flags. */
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#define ARGPARSE_TYPE_NONE 0 /* Does not take an argument. */
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#define ARGPARSE_TYPE_INT 1 /* Takes an int argument. */
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#define ARGPARSE_TYPE_STRING 2 /* Takes a string argument. */
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#define ARGPARSE_TYPE_LONG 3 /* Takes a long argument. */
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#define ARGPARSE_TYPE_ULONG 4 /* Takes an unsigned long argument. */
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#define ARGPARSE_OPT_OPTIONAL (1<<3) /* Argument is optional. */
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#define ARGPARSE_OPT_PREFIX (1<<4) /* Allow 0x etc. prefixed values. */
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#define ARGPARSE_OPT_COMMAND (1<<8) /* The argument is a command. */
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/* A set of macros to make option definitions easier to read. */
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#define ARGPARSE_x(s,l,t,f,d) \
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{ (s), (l), ARGPARSE_TYPE_ ## t | (f), (d) }
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#define ARGPARSE_s(s,l,t,d) \
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{ (s), (l), ARGPARSE_TYPE_ ## t, (d) }
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#define ARGPARSE_s_n(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_NONE, (d) }
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#define ARGPARSE_s_i(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_INT, (d) }
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#define ARGPARSE_s_s(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_STRING, (d) }
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#define ARGPARSE_s_l(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_LONG, (d) }
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#define ARGPARSE_s_u(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_ULONG, (d) }
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#define ARGPARSE_o(s,l,t,d) \
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{ (s), (l), (ARGPARSE_TYPE_ ## t | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_n(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_i(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_INT | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_s(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_STRING | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_l(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_LONG | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_u(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_ULONG | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_p(s,l,t,d) \
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{ (s), (l), (ARGPARSE_TYPE_ ## t | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_n(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_i(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_INT | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_s(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_STRING | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_l(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_LONG | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_u(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_ULONG | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op(s,l,t,d) \
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{ (s), (l), (ARGPARSE_TYPE_ ## t \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_n(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_NONE \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_i(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_INT \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_s(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_STRING \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_l(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_LONG \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_u(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_ULONG \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_c(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_COMMAND), (d) }
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#define ARGPARSE_group(s,d) \
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{ (s), NULL, 0, (d) }
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#define ARGPARSE_end() { 0, NULL, 0, NULL }
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/* Other constants. */
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#define ARGPARSE_PRINT_WARNING 1
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#define ARGPARSE_PRINT_ERROR 2
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/* Error values. */
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#define ARGPARSE_IS_ARG (-1)
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#define ARGPARSE_INVALID_OPTION (-2)
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