88 lines
1.8 KiB
C++
88 lines
1.8 KiB
C++
/** @example stream2.cc
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*
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* An example of using streams to process strings, including some
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* standard range algorithm use.
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*/
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#include <vector>
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#include <ostd/algorithm.hh>
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#include <ostd/string.hh>
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#include <ostd/io.hh>
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using namespace ostd;
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int main() {
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writeln("writing sample file...");
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file_stream wtest{"test.txt", stream_mode::WRITE};
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std::string smpl =
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"This is a test file for later read.\n"
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"It contains some sample text in order to see whether "
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"things actually read correctly.\n\n\n"
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""
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"This is after a few newlines. The file continues here.\n"
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"The file ends here.\n";
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copy(iter(smpl), wtest.iter());
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wtest.close();
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file_stream test{"test.txt"};
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writeln("## WHOLE FILE READ ##\n");
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auto fr = test.iter();
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writefln(
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"-- str beg --\n%s-- str end --",
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std::string{fr.iter_begin(), fr.iter_end()}
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);
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test.seek(0);
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writeln("\n## PART FILE READ ##\n");
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auto fr2 = test.iter().take(25);
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writefln(
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"-- str beg --\n%s\n-- str end --",
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std::string{fr2.iter_begin(), fr2.iter_end()}
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);
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test.seek(0);
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writeln("\n## BY LINE READ ##\n");
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for (auto const &line: test.iter_lines()) {
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writeln("got line: ", line);
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}
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test.close();
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writeln("\n## FILE SORT ##\n");
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wtest.open("test.txt", stream_mode::WRITE);
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smpl = "foo\n"
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"bar\n"
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"baz\n"
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"test\n"
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"this\n"
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"will\n"
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"be\n"
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"in\n"
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"order\n";
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copy(iter(smpl), wtest.iter());
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wtest.close();
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test.open("test.txt");
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auto lns = test.iter_lines();
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std::vector<std::string> x{lns.iter_begin(), lns.iter_end()};
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writeln("before sort: ", x);
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sort(iter(x));
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writeln("after sort: ", x);
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return 0;
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}
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