shell.cpp

Example of shell parsing.

00001 // Copyright (C) 2009-2010 David Sugar, Tycho Softworks.
00002 //
00003 // This file is part of GNU uCommon C++.
00004 //
00005 // GNU uCommon C++ is free software: you can redistribute it and/or modify
00006 // it under the terms of the GNU Lesser General Public License as published
00007 // by the Free Software Foundation, either version 3 of the License, or
00008 // (at your option) any later version.
00009 //
00010 // GNU uCommon C++ is distributed in the hope that it will be useful,
00011 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00012 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013 // GNU Lesser General Public License for more details.
00014 //
00015 // You should have received a copy of the GNU Lesser General Public License
00016 // along with GNU uCommon C++.  If not, see <http://www.gnu.org/licenses/>.
00017 
00018 #ifndef DEBUG
00019 #define DEBUG
00020 #endif
00021 
00022 #include <ucommon/ucommon.h>
00023 
00024 #include <stdio.h>
00025 
00026 using namespace UCOMMON_NAMESPACE;
00027 
00028 extern "C" int main()
00029 {
00030     int test_argc;
00031     char *test_argv[6];
00032 
00033     shell::bind("test");
00034 
00035     test_argc = 5;
00036     test_argv[0] = (char *)"test";
00037 
00038     test_argv[1] = (char *)"--lines=5";
00039     test_argv[2] = (char *)"-r";
00040     test_argv[3] = (char *)"a";
00041     test_argv[4] = (char *)"b";
00042     test_argv[5] = NULL;
00043 
00044     shell::flagopt rflag('r', "--reverse", "reverse order of arguments");
00045     shell::flagopt tflag('t', "--testing", "never hit this flag");
00046     shell::numericopt lines('l', "--lines", "number of lines in output");
00047     shell args(test_argc, test_argv);
00048 
00049     assert(!tflag);
00050     assert(is(rflag));
00051     assert(*lines == 5);
00052     assert(args() == 2);            // two file arguments left
00053     assert(eq(args[0], "a"));       // first file argument is "a"
00054 
00055     string_t prefix, subdir, basedir;
00056 
00057     prefix = shell::path(shell::SYSTEM_PREFIX);
00058     subdir = shell::path(shell::SYSTEM_PREFIX, "test");
00059     basedir = shell::path(shell::SYSTEM_PREFIX, "/test");
00060 
00061     prefix = prefix + "/test";
00062 
00063     assert(eq(basedir, "/test"));
00064     assert(eq(subdir, prefix));
00065 }

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