1 /*****************************************************************************/
5 /* Helper functions for command line parsing */
9 /* (C) 2000 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@musoftware.de */
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. */
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: */
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 */
32 /*****************************************************************************/
45 /*****************************************************************************/
47 /*****************************************************************************/
51 /* Program name - is set after call to InitCmdLine */
52 extern const char* ProgName;
54 /* The program argument vector */
56 extern unsigned ArgCount;
58 /* Structure defining a long option */
59 typedef struct LongOpt LongOpt;
63 void (*Func) (const char* Opt, const char* Arg);
68 /*****************************************************************************/
70 /*****************************************************************************/
74 void InitCmdLine (int* aArgCount, char** aArgVec[], const char* aProgName);
75 /* Initialize command line parsing. aArgVec is the argument array terminated by
76 * a NULL pointer (as usual), ArgCount is the number of valid arguments in the
77 * array. Both arguments are remembered in static storage.
80 void UnknownOption (const char* Opt) attribute ((noreturn));
81 /* Print an error about an unknown option and die. */
83 void NeedArg (const char* Opt) attribute ((noreturn));
84 /* Print an error about a missing option argument and exit. */
86 void InvDef (const char* Def) attribute ((noreturn));
87 /* Print an error about an invalid definition and die */
89 const char* GetArg (unsigned* ArgNum, unsigned Len);
90 /* Get an argument for a short option. The argument may be appended to the
91 * option itself or may be separate. Len is the length of the option string.
94 void LongOption (unsigned* ArgNum, const LongOpt* OptTab, unsigned OptCount);
95 /* Handle a long command line option */
99 /* End of cmdline.h */