| 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.cfa -- format characters into blocks of 4 and groups of 5 blocks per line
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| 8 | //
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| 9 | // Author : Thierry Delisle
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| 10 | // Created On : Thu Mar 5 16:09:08 2020
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| 11 | // Last Modified By :
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| 12 | // Last Modified On :
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| 13 | // Update Count :
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| 14 | //
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| 15 |
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| 16 | #include <fstream.hfa>
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| 17 |
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| 18 | generator Format {
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| 19 | char ch; // used for communication
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| 20 | int g, b; // global because used in destructor
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| 21 | };
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| 22 |
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| 23 | void main( Format & fmt ) with( fmt ) {
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| 24 | for () { // for as many characters
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| 25 | for ( g = 0; g < 5; g += 1 ) { // groups of 5 blocks
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| 26 | for ( b = 0; b < 4; b += 1 ) { // blocks of 4 characters
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| 27 | for () { // for newline characters
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| 28 | suspend;
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| 29 | if ( ch != '\n' ) break; // ignore newline
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| 30 | } // for
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| 31 | sout | ch; // print character
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| 32 | } // for
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| 33 | sout | " "; // print block separator
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| 34 | } // for
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| 35 | sout | nl; // print group separator
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| 36 | } // for
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| 37 | } // main
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| 38 |
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| 39 | void ?{}( Format & fmt ) {
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| 40 | resume( fmt ); // prime (start) coroutine
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| 41 | }
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| 42 |
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| 43 | void ^?{}( Format & fmt ) with( fmt ) {
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| 44 | if ( g != 0 || b != 0 ) sout | nl;
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| 45 | }
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| 46 |
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| 47 | void format( Format & fmt ) {
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| 48 | resume( fmt );
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| 49 | } // format
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| 50 |
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| 51 | int main() {
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| 52 | Format fmt;
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| 53 | sout | nlOff; // turn off auto newline
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| 54 |
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| 55 | eof: for () { // read until end of file
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| 56 | sin | fmt.ch; // read one character
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| 57 | if ( eof( sin ) ) break eof; // eof ?
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| 58 | format( fmt ); // push character for formatting
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| 59 | } // for
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| 60 | } // main
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| 61 |
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| 62 | // Local Variables: //
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| 63 | // tab-width: 4 //
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| 64 | // compile-command: "cfa fmtLines.cfa" //
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| 65 | // End: //
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