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51 lines
1.5 KiB
51 lines
1.5 KiB
/*****************************************************************************
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*
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* demo program - part of CLIPP (command line interfaces for modern C++)
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*
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* released under MIT license
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*
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* (c) 2017-2018 André Müller; foss@andremueller-online.de
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*
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*****************************************************************************/
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#include <iostream>
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#include <string>
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#include <vector>
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#include <clipp.h>
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int main(int argc, char* argv[])
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{
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using namespace clipp;
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using std::cout;
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std::vector<std::string> wrong;
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auto istarget = match::prefix_not("-");
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auto cli = (
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value("file")
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.if_missing([]{ cout << "You need to provide a source filename!\n"; } )
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.if_repeated([](int idx){ cout << "Only one source file allowed! (index " << idx << ")\n"; } )
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,
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required("-t") & values(istarget, "target")
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.if_missing([]{ cout << "You need to provide at least one target filename!\n"; } )
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.if_blocked([]{ cout << "Target names must not be given before the file command and the source file name!\n"; })
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,
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option("--http") | option("--ftp")
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.if_conflicted([]{ cout << "You can only use one protocol at a time!\n"; } )
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,
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any_other(wrong)
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);
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if(parse(argc, argv, cli) && wrong.empty()) {
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cout << "OK\n";
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}
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else {
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for(const auto& arg : wrong) {
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cout << "'" << arg << "' is not a valid command line argument\n";
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}
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cout << "Usage:\n" << usage_lines(cli,argv[0]) << '\n';
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}
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}
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