mirror of
https://github.com/golang/go
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50 lines
2.0 KiB
C
50 lines
2.0 KiB
C
/*
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Derived from Inferno include/kern.h.
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http://code.google.com/p/inferno-os/source/browse/include/kern.h
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Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
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Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
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Portions Copyright © 2009 The Go Authors. All rights reserved.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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/* command line */
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extern char *argv0;
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#define ARGBEGIN for((argv0=(argv0?argv0:*argv)),argv++,argc--;\
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argv[0] && argv[0][0]=='-' && argv[0][1];\
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argc--, argv++) {\
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char *_args, *_argt;\
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char _argc;\
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_args = &argv[0][1];\
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if(_args[0]=='-' && _args[1]==0){\
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argc--; argv++; break;\
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}\
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while((_argc = *_args++) != 0)\
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switch(_argc)
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#define ARGEND _argt=0;USED(_argt);USED(_argc);USED(_args);}USED(argv);USED(argc);
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#define ARGF() (_argt=_args, _args="",\
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(*_argt? _argt: argv[1]? (argc--, *++argv): 0))
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#define EARGF(x) (_argt=_args, _args="",\
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(*_argt? _argt: argv[1]? (argc--, *++argv): ((x), fatal("usage"), (char*)0)))
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#define ARGC() _argc
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