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1 /*****************************************************************************/
2 /*                                                                           */
3 /*                                 cmdline.h                                 */
4 /*                                                                           */
5 /*                 Helper functions for command line parsing                 */
6 /*                                                                           */
7 /*                                                                           */
8 /*                                                                           */
9 /* (C) 2000     Ullrich von Bassewitz                                        */
10 /*              Wacholderweg 14                                              */
11 /*              D-70597 Stuttgart                                            */
12 /* EMail:       uz@musoftware.de                                             */
13 /*                                                                           */
14 /*                                                                           */
15 /* This software is provided 'as-is', without any expressed or implied       */
16 /* warranty.  In no event will the authors be held liable for any damages    */
17 /* arising from the use of this software.                                    */
18 /*                                                                           */
19 /* Permission is granted to anyone to use this software for any purpose,     */
20 /* including commercial applications, and to alter it and redistribute it    */
21 /* freely, subject to the following restrictions:                            */
22 /*                                                                           */
23 /* 1. The origin of this software must not be misrepresented; you must not   */
24 /*    claim that you wrote the original software. If you use this software   */
25 /*    in a product, an acknowledgment in the product documentation would be  */
26 /*    appreciated but is not required.                                       */
27 /* 2. Altered source versions must be plainly marked as such, and must not   */
28 /*    be misrepresented as being the original software.                      */
29 /* 3. This notice may not be removed or altered from any source              */
30 /*    distribution.                                                          */
31 /*                                                                           */
32 /*****************************************************************************/
33
34
35
36 #ifndef CMDLINE_H
37 #define CMDLINE_H
38
39
40
41 #include "attrib.h"
42
43
44
45 /*****************************************************************************/
46 /*                                   Data                                    */
47 /*****************************************************************************/
48
49
50
51 /* Program name - is set after call to InitCmdLine */
52 extern const char* ProgName;
53
54 /* Structure defining a long option */
55 typedef struct LongOpt  LongOpt;
56 struct LongOpt {
57     const char* Option;
58     unsigned    ArgCount;
59     void        (*Func) (const char* Opt, const char* Arg);
60 };
61
62
63
64 /*****************************************************************************/
65 /*                                   Code                                    */
66 /*****************************************************************************/
67
68
69
70 void InitCmdLine (unsigned aArgCount, char* aArgVec[], const char* aProgName);
71 /* Initialize command line parsing. aArgVec is the argument array terminated by
72  * a NULL pointer (as usual), ArgCount is the number of valid arguments in the
73  * array. Both arguments are remembered in static storage.
74  */
75
76 void UnknownOption (const char* Opt) attribute ((noreturn));
77 /* Print an error about an unknown option and die. */
78
79 void NeedArg (const char* Opt) attribute ((noreturn));
80 /* Print an error about a missing option argument and exit. */
81
82 void InvDef (const char* Def) attribute ((noreturn));
83 /* Print an error about an invalid definition and die */
84
85 const char* GetArg (int* ArgNum, unsigned Len);
86 /* Get an argument for a short option. The argument may be appended to the
87  * option itself or may be separate. Len is the length of the option string.
88  */
89
90 void LongOption (int* ArgNum, const LongOpt* OptTab, unsigned OptCount);
91 /* Handle a long command line option */
92
93
94
95 /* End of cmdline.h */
96
97 #endif
98                                                     
99
100