fsimphy/bayernfahrplan
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restructred the program a bit and added unittests for fahrplanparser.parseTime. Also fixed some stuff I fould while doing that

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This commit is contained in:
Johannes Loher 2016-12-29 18:20:08 +01:00
parent 7f78ea64c9
commit 1cc8840127
2 changed files with 107 additions and 50 deletions
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57
source/app.d
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@ -1,45 +1,12 @@
import std.algorithm : filter, map, startsWith;
import std.array : array, empty, front, replace;
import std.conv : to;
import std.datetime : dur, TimeOfDay, Clock;
import std.getopt : defaultGetoptPrinter, getopt;
import std.json : JSONValue;
import std.regex : ctRegex, matchAll;
import std.stdio : File, stdout, writeln;
import std.string : strip;
import std.typecons : tuple;
import std.format : format;
import kxml.xml : readDocument, XmlNode;
import requests : postContent;
import fahrplanparser;
import substitution;
auto parseTime(in string input)
{
auto matches = matchAll(input, ctRegex!(`(?P<hours>\d+):(?P<minutes>\d+)`));
auto actualTime = TimeOfDay(matches.front["hours"].to!int, matches.front["minutes"].to!int);
matches.popFront;
if (!matches.empty)
{
auto expectedTime = TimeOfDay(matches.front["hours"].to!int,
matches.front["minutes"].to!int);
return tuple(expectedTime, actualTime - expectedTime);
}
return tuple(actualTime, dur!"minutes"(0));
}
auto getRowContents(XmlNode[] rows)
{
return rows.map!(row => row.parseXPath("//td")[1 .. $ - 1].map!((column) {
auto link = column.parseXPath("//a");
if (!link.empty)
return link.front.getCData.replace("...", "");
return column.getCData;}));
}
void main(string[] args)
{
string fileName;
@ -63,28 +30,18 @@ void main(string[] args)
"type_dm" : "any",
"itdLPxx_bcl" : "true"]);
auto currentTime = Clock.currTime;
loadSubstitutionFile(substitutionFileName);
JSONValue j = ["time" : "%02s:%02s".format(currentTime.hour, currentTime.minute)];
j.object["departures"] = readDocument(cast(string) content.data)
.parseXPath(`//table[@id="departureMonitor"]/tbody/tr`)[1 .. $]
.getRowContents
.filter!(row => !row.empty)
.map!(a => ["departure" : a[0].parseTime[0].to!string[0 .. $ - 3],
"delay" : a[0].parseTime[1].total!"minutes".to!string,
"line" : a[1],
"direction" : a[2].substitute])
.array.JSONValue;
auto output = (cast(string) content.data).parseFahrplan;
if (fileName !is null)
{
auto output = File(fileName, "w");
scope(exit) output.close;
output.writeln(j.toPrettyString.replace("\\/", "/"));
auto outfile = File(fileName, "w");
scope(exit) outfile.close;
outfile.writeln(output);
}
else
{
j.toPrettyString.replace("\\/", "/").writeln;
output.writeln;
}
}

100
source/fahrplanparser.d Normal file
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@ -0,0 +1,100 @@
module fahrplanparser;
import std.algorithm : filter, map, startsWith;
import std.array : array, empty, front, replace;
import std.conv : to;
import std.datetime : dur, TimeOfDay, Clock;
import std.format : format;
import std.json : JSONValue;
import std.regex : ctRegex, matchAll;
import std.string : strip;
import std.typecons : tuple;
import kxml.xml : readDocument, XmlNode;
import substitution;
public:
auto parseFahrplan(in string data)
{
auto currentTime = Clock.currTime;
JSONValue j = ["time" : "%02s:%02s".format(currentTime.hour, currentTime.minute)];
j.object["departures"] = data.readDocument
.parseXPath(`//table[@id="departureMonitor"]/tbody/tr`)[1 .. $]
.getRowContents
.filter!(row => !row.empty)
.map!(a => ["departure" : a[0].parseTime[0].to!string[0 .. $ - 3],
"delay" : a[0].parseTime[1].total!"minutes".to!string,
"line" : a[1],
"direction" : a[2].substitute])
.array.JSONValue;
return j.toPrettyString.replace("\\/", "/");
}
private:
class BadTimeInputException : Exception
{
this(string msg) @safe pure nothrow @nogc
{
super(msg);
}
this() @safe pure nothrow @nogc
{
this("");
}
}
auto parseTime(in string input) @safe
{
auto matches = matchAll(input, ctRegex!(`(?P<hours>\d{1,2}):(?P<minutes>\d{2})`));
if (matches.empty)
throw new BadTimeInputException();
auto actualTime = TimeOfDay(matches.front["hours"].to!int, matches.front["minutes"].to!int);
matches.popFront;
if (!matches.empty)
{
auto expectedTime = TimeOfDay(matches.front["hours"].to!int,
matches.front["minutes"].to!int);
auto timeDiff = actualTime - expectedTime;
if(timeDiff < dur!"minutes"(0))
timeDiff = dur!"hours"(24) + timeDiff;
return tuple(expectedTime, timeDiff);
}
return tuple(actualTime, dur!"minutes"(0));
}
@safe unittest
{
import std.exception : assertThrown;
assertThrown(parseTime(""));
assertThrown(parseTime("lkeqf"));
assertThrown(parseTime(":"));
assertThrown(parseTime("00:0"));
assert("00:00".parseTime == tuple(TimeOfDay(0, 0), dur!"minutes"(0)));
assert("0:00".parseTime == tuple(TimeOfDay(0, 0), dur!"minutes"(0)));
assert("00:00 00:00".parseTime == tuple(TimeOfDay(0, 0), dur!"minutes"(0)));
assert("12:3412:34".parseTime == tuple(TimeOfDay(12, 34), dur!"minutes"(0)));
assert("ölqjfo12:34oieqf12:31ölqjf".parseTime == tuple(TimeOfDay(12, 31), dur!"minutes"(3)));
assert("17:53 (planmäßig 17:51 Uhr)".parseTime == tuple(TimeOfDay(17, 51), dur!"minutes"(2)));
assert("00:00 23:59".parseTime == tuple(TimeOfDay(23,59), dur!"minutes"(1)));
}
auto getRowContents(XmlNode[] rows)
{
return rows.map!(row => row.parseXPath("//td")[1 .. $ - 1].map!((column) {
auto link = column.parseXPath("//a");
if (!link.empty)
return link.front.getCData.replace("...", "");
return column.getCData;}));
}