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Diffstat (limited to 'src/xgetopt.c')
| -rw-r--r-- | src/xgetopt.c | 222 |
1 files changed, 0 insertions, 222 deletions
diff --git a/src/xgetopt.c b/src/xgetopt.c deleted file mode 100644 index 73694ada..00000000 --- a/src/xgetopt.c +++ /dev/null @@ -1,222 +0,0 @@ -// XGetopt.cpp Version 1.2 -// -// Author: Hans Dietrich -// hdietrich2@hotmail.com -// -// Description: -// XGetopt.cpp implements getopt(), a function to parse command lines. -// -// History -// Version 1.2 - 2003 May 17 -// - Added Unicode support -// -// Version 1.1 - 2002 March 10 -// - Added example to XGetopt.cpp module header -// -// This software is released into the public domain. -// You are free to use it in any way you like. -// -// This software is provided "as is" with no expressed -// or implied warranty. I accept no liability for any -// damage or loss of business that this software may cause. -// -/////////////////////////////////////////////////////////////////////////////// - - -/////////////////////////////////////////////////////////////////////////////// -// if you are using precompiled headers then include this line: -//#include "stdafx.h" -/////////////////////////////////////////////////////////////////////////////// - - -/////////////////////////////////////////////////////////////////////////////// -// if you are not using precompiled headers then include these lines: -#include <windows.h> -#include <stdio.h> -#include <tchar.h> -/////////////////////////////////////////////////////////////////////////////// - - -#include "XGetopt.h" - - -/////////////////////////////////////////////////////////////////////////////// -// -// X G e t o p t . c p p -// -// -// NAME -// getopt -- parse command line options -// -// SYNOPSIS -// int getopt(int argc, TCHAR *argv[], TCHAR *optstring) -// -// extern TCHAR *optarg; -// extern int optind; -// -// DESCRIPTION -// The getopt() function parses the command line arguments. Its -// arguments argc and argv are the argument count and array as -// passed into the application on program invocation. In the case -// of Visual C++ programs, argc and argv are available via the -// variables __argc and __argv (double underscores), respectively. -// getopt returns the next option letter in argv that matches a -// letter in optstring. (Note: Unicode programs should use -// __targv instead of __argv. Also, all character and string -// literals should be enclosed in _T( ) ). -// -// optstring is a string of recognized option letters; if a letter -// is followed by a colon, the option is expected to have an argument -// that may or may not be separated from it by white space. optarg -// is set to point to the start of the option argument on return from -// getopt. -// -// Option letters may be combined, e.g., "-ab" is equivalent to -// "-a -b". Option letters are case sensitive. -// -// getopt places in the external variable optind the argv index -// of the next argument to be processed. optind is initialized -// to 0 before the first call to getopt. -// -// When all options have been processed (i.e., up to the first -// non-option argument), getopt returns EOF, optarg will point -// to the argument, and optind will be set to the argv index of -// the argument. If there are no non-option arguments, optarg -// will be set to NULL. -// -// The special option "--" may be used to delimit the end of the -// options; EOF will be returned, and "--" (and everything after it) -// will be skipped. -// -// RETURN VALUE -// For option letters contained in the string optstring, getopt -// will return the option letter. getopt returns a question mark (?) -// when it encounters an option letter not included in optstring. -// EOF is returned when processing is finished. -// -// BUGS -// 1) Long options are not supported. -// 2) The GNU double-colon extension is not supported. -// 3) The environment variable POSIXLY_CORRECT is not supported. -// 4) The + syntax is not supported. -// 5) The automatic permutation of arguments is not supported. -// 6) This implementation of getopt() returns EOF if an error is -// encountered, instead of -1 as the latest standard requires. -// -// EXAMPLE -// BOOL CMyApp::ProcessCommandLine(int argc, TCHAR *argv[]) -// { -// int c; -// -// while ((c = getopt(argc, argv, _T("aBn:"))) != EOF) -// { -// switch (c) -// { -// case _T('a'): -// TRACE(_T("option a\n")); -// // -// // set some flag here -// // -// break; -// -// case _T('B'): -// TRACE( _T("option B\n")); -// // -// // set some other flag here -// // -// break; -// -// case _T('n'): -// TRACE(_T("option n: value=%d\n"), atoi(optarg)); -// // -// // do something with value here -// // -// break; -// -// case _T('?'): -// TRACE(_T("ERROR: illegal option %s\n"), argv[optind-1]); -// return FALSE; -// break; -// -// default: -// TRACE(_T("WARNING: no handler for option %c\n"), c); -// return FALSE; -// break; -// } -// } -// // -// // check for non-option args here -// // -// return TRUE; -// } -// -/////////////////////////////////////////////////////////////////////////////// - -TCHAR *optarg; // global argument pointer -int optind = 0; // global argv index - -int getopt(int argc, TCHAR *argv[], TCHAR *optstring) -{ - static TCHAR *next = NULL; - TCHAR c; - TCHAR *cp = NULL; - - if (optind == 0) - next = NULL; - - optarg = NULL; - - if (next == NULL || *next == _T('\0')) - { - if (optind == 0) - optind++; - - if (optind >= argc || argv[optind][0] != _T('-') || argv[optind][1] == _T('\0')) - { - optarg = NULL; - if (optind < argc) - optarg = argv[optind]; - return EOF; - } - - if (_tcscmp(argv[optind], _T("--")) == 0) - { - optind++; - optarg = NULL; - if (optind < argc) - optarg = argv[optind]; - return EOF; - } - - next = argv[optind]; - next++; // skip past - - optind++; - } - - c = *next++; - cp = _tcschr(optstring, c); - - if (cp == NULL || c == _T(':')) - return _T('?'); - - cp++; - if (*cp == _T(':')) - { - if (*next != _T('\0')) - { - optarg = next; - next = NULL; - } - else if (optind < argc) - { - optarg = argv[optind]; - optind++; - } - else - { - return _T('?'); - } - } - - return c; -} |