/examples/example_readme.d
D | 150 lines | 116 code | 33 blank | 1 comment | 6 complexity | a14f0245237e99b9e3a726bc225c6890 MD5 | raw file
1module readme; 2 3import utils.timer : Timer; 4import utils.log : logging; 5 6string g(string x) { 7 return x ~ " - <b>" ~ x ~ "</b>"; 8} 9 10 11string extraargs(string s) { 12 return "s=2"; 13} 14 15 16string generate_1(string title, string[] points) { 17 string s = "<head><title>" ~ title ~ "</title></head><body>"; // line a 18 if (points.length > 0) { 19 s ~= "<ul>"; // line b 20 foreach (point; points) { // line c 21 s ~= "<li>" ~ g(point) ~ "</li>"; // line d 22 } 23 s ~= "</ul>"; // line e 24 } 25 s ~= "</body>"; // line f 26 27 return "<html "~extraargs(s)~">" ~ s ~ "</html>"; // line g 28} 29 30 31 32 33string extraargs(char[] s) { 34 return "s=2"; 35} 36 37size_t g_size(string x) { 38 return x.length + " - <b>".length + x.length + "</b>".length; 39} 40 41 42size_t generate_2_size(string title, string[] points) { 43 size_t s = "<head><title>".length + title.length + "</title></head><body>".length; // line a 44 if (points.length > 0) { 45 s += "<ul>".length; // line b 46 foreach (point; points) { // line c 47 s += "<li>".length + g_size(point) + "</li>".length; // line d 48 } 49 s += "</ul>".length; // line e 50 } 51 s += "</body>".length; // line f 52 53 return "<html ".length+50+">".length + s + "</html>".length; // line g. estimated size of extraargs(s) == 50 54} 55string generate_2(string title, string[] points) { 56 char[] s; 57 size_t s_size = generate_2_size(title, points); 58 s.length = s_size; 59 size_t already = 0; 60 void append(string str) { 61 if (already+str.length >= s_size) { 62 s.length = s_size = already+str.length; 63 } 64 s[already .. already+str.length] = str[]; 65 already += str.length; 66 } 67 append("<head><title>" ~ title ~ "</title></head><body>"); // line a 68 if (points.length > 0) { 69 append("<ul>"); // line b 70 foreach (point; points) { // line c 71 append("<li>" ~ g(point) ~ "</li>"); // line d 72 } 73 append("</ul>"); // line e 74 } 75 append("</body>"); // line f 76 77 s.length = already; // line h 78 79 s = "<html "~extraargs(s)~">" ~ s ~ "</html>"; // line g 80 81 return cast(invariant)s; 82} 83 84 85import cords : Cord, RBCord, CordI; 86 87 88RBCord g(RBCord x) { 89 return x ~ " - <b>" ~ x ~ "</b>"; 90} 91 92RBCord extraargs(RBCord s) { 93 return RBCord("s=2"); 94} 95 96RBCord generate_3(string title, string[] points) { 97 RBCord s = "<head><title>" ~ title ~ "</title></head><body>"; // line a 98 if (points.length > 0) { 99 s = s ~ "<ul>"; // line b 100 foreach (point; points) { // line c 101 s = s ~ "<li>" ~ g(point) ~ "</li>"; // line d 102 } 103 s = s ~ "</ul>"; // line e 104 } 105 s = s ~ "</body>"; // line f 106 107 s = "<html "~extraargs(s)~">" ~ s ~ "</html>"; // line g 108 //return s.toString(); // allocate exactly s.length bytes and fill it 109 return s; 110} 111 112import std.stdio : writefln; 113 114import std.c.stdlib : atoi; 115 116int main(string[] args) { 117 auto title = "Simple test"; 118 119 string[] list; 120 121 int c1 = atoi(args[1].ptr); 122 int c2 = atoi(args[2].ptr); 123 for (int i = 0; i < c1; i++) { 124 auto temp = new char[c2]; 125 foreach(int j, ref z; temp) { 126 z = 'A' + j % ('Z'-'A'); 127 } 128 list ~= [cast(string)temp]; 129 } 130 131 logging = true; 132 133 { 134 scope t = new Timer("Standard"); 135 auto g = generate_1(title, list); 136 writefln("%s", g.length); 137 } 138 { 139 scope t = new Timer("With estimation of size"); 140 auto g = generate_2(title, list); 141 writefln("%s", g.length); 142 } 143 { 144 scope t = new Timer("Cords"); 145 auto g = generate_3(title, list); 146 writefln("%s", g.length); 147 } 148 149 return 0; 150}