| 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2017 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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| 7 | // fmtLines.cc -- format characters into blocks of 4 and groups of 5 blocks per line |
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| 8 | // |
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| 9 | // Author : Peter A. Buhr |
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| 10 | // Created On : Sun Sep 17 21:56:15 2017 |
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| 11 | // Last Modified By : Peter A. Buhr |
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| 12 | // Last Modified On : Fri Mar 22 13:41:16 2019 |
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| 13 | // Update Count : 58 |
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| 14 | // |
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| 15 | |
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| 16 | #include <fstream.hfa> |
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| 17 | #include <coroutine.hfa> |
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| 18 | |
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| 19 | coroutine Format { |
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| 20 | char ch; // used for communication |
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| 21 | int g, b; // global because used in destructor |
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| 22 | }; |
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| 23 | |
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| 24 | void main( Format & fmt ) with( fmt ) { |
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| 25 | for () { // for as many characters |
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| 26 | for ( g = 0; g < 5; g += 1 ) { // groups of 5 blocks |
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| 27 | for ( b = 0; b < 4; b += 1 ) { // blocks of 4 characters |
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| 28 | for () { // for newline characters |
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| 29 | suspend; |
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| 30 | if ( ch != '\n' ) break; // ignore newline |
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| 31 | } // for |
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| 32 | sout | ch; // print character |
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| 33 | } // for |
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| 34 | sout | " "; // print block separator |
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| 35 | } // for |
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| 36 | sout | nl; // print group separator |
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| 37 | } // for |
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| 38 | } // main |
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| 39 | |
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| 40 | void ?{}( Format & fmt ) { |
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| 41 | resume( fmt ); // prime (start) coroutine |
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| 42 | } |
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| 43 | |
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| 44 | void ^?{}( Format & fmt ) with( fmt ) { |
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| 45 | if ( g != 0 || b != 0 ) sout | nl; |
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| 46 | } |
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| 47 | |
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| 48 | void format( Format & fmt ) { |
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| 49 | resume( fmt ); |
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| 50 | } // format |
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| 51 | |
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| 52 | int main() { |
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| 53 | Format fmt; |
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| 54 | sout | nlOff; // turn off auto newline |
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| 55 | |
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| 56 | eof: for () { // read until end of file |
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| 57 | sin | fmt.ch; // read one character |
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| 58 | if ( eof( sin ) ) break eof; // eof ? |
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| 59 | format( fmt ); // push character for formatting |
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| 60 | } // for |
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| 61 | } // main |
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| 62 | |
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| 63 | // Local Variables: // |
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| 64 | // tab-width: 4 // |
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| 65 | // compile-command: "cfa fmtLines.cfa" // |
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| 66 | // End: // |
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