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Ingy döt Net 2013-04-10 23:57:08 -07:00
parent 47bf37c096
commit b83f433714
12433 changed files with 156208 additions and 123 deletions
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38
Task/Read-a-configuration-file/D/read-a-configuration-file.d Normal file
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import std.stdio, std.string, std.conv, std.regex, std.getopt;
template VarName(alias var) {
enum VarName = var.stringof.toUpper();
}
void setOpt(alias Var)(in string line) {
auto m = match(line, regex(`^` ~ VarName!Var ~ `(\s+(.*))?`));
if (!m.empty) {
static if (is(typeof(Var) == string))
Var = m.captures.length > 2 ? m.captures[2] : "";
static if (is(typeof(Var) == bool))
Var = true;
static if (is(typeof(Var) == int))
Var = m.captures.length > 2 ? to!int(m.captures[2]) : 0;
}
}
void main(string[] args) {
string fullName, favouriteFruit, otherFamily;
bool needsPeeling, seedsRemoved; // Default false.
auto f = File("readcfg.txt", "r");
foreach (line; f.byLine()) {
auto opt = line.strip().idup;
setOpt!fullName(opt);
setOpt!favouriteFruit(opt);
setOpt!needsPeeling(opt);
setOpt!seedsRemoved(opt);
setOpt!otherFamily(opt);
}
writefln("%14s = %s", VarName!fullName, fullName);
writefln("%14s = %s", VarName!favouriteFruit, favouriteFruit);
writefln("%14s = %s", VarName!needsPeeling, needsPeeling);
writefln("%14s = %s", VarName!seedsRemoved, seedsRemoved);
writefln("%14s = %s", VarName!otherFamily, otherFamily);
}