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using GLib;
static Regex get_from_array (int index)
{
Regex[] arr = {
/(\d+\.\d+\.\d+)/,
/(\d+)\.\d+\.\d+/,
/\d+\.(\d+)\.\d+/,
/(\d+)\.\d+\.(\d+)/
};
assert (0 <= index <= 3);
return arr[index];
}
static Regex get_fixed ()
{
return /(is.*ip)/;
}
class Test : Object {
public signal void regexTest (string str);
public void run (string s)
{
regexTest (s);
}
}
void main ()
{
MatchInfo info;
// Simple greedy regular expression matching, regex received as a function return value.
var str1 = "mississippi";
if (get_fixed ().match (str1, 0, out info)) {
stdout.printf ("Part of %s is '%s'...\n", str1, info.fetch (1));
} else {
stdout.printf ("Did not match at all.\n");
}
// Match caseless.
var str2 = "demonStration";
if (/mon(str.*o)n/i.match (str2, 0, out info)) {
stdout.printf ("Part of %s is '%s'...\n", str2, info.fetch (1));
} else {
stdout.printf ("%s did not match at all.\n", str2);
}
// Match and pick substrings.
var ts = "Time: 10:42:12";
if (/Time: (..):(..):(..)/.match (ts, 0, out info)) {
stdout.printf ("%s\n\thours = %s\n\tminutes = %s\n\tseconds = %s\n\n", ts, info.fetch (1), info.fetch (2), info.fetch (3));
}
// Replace demo: word swapping
try {
var str = "apple grape";
stdout.printf ("'%s' becomes '%s'\n", str, /^([^ ]*) *([^ ]*)/.replace (str, -1, 0, """\2 \1"""));
} catch (RegexError err) {
// Replacing still needs exception catching
message (err.message);
}
// Regex literals in an array
for (int i=0; i<4; i++) {
if (get_from_array (i).match ("23.3.2010", 0, out info)) {
stdout.printf ("Round %d: %s\n", i, info.fetch (1));
}
}
// ??-operator
Regex? r = null;
Regex? r1 = null;
Regex? r2 = null;
r = r1 ?? r2 ?? /match (this)/i;
if (r.match ("match THIS", 0, out info)) {
stdout.printf ("Match: %s\n", info.fetch (1));
}
// Escape sequences
if (/\.\+\(\)\-\?\/\"\$\[\]\*\^/.match (".+()-?/\"$[]*^")) {
stdout.printf ("Matches\n");
} else {
stdout.printf ("Does not match.\n");
}
// Lambda and closure test
Regex? rc = /foo(bar)/i;
var test = new Test ();
test.regexTest.connect ((s) => {
if (rc.match (s, 0, out info)) {
stdout.printf ("Lambda (closure var.): %s -> %s\n", s, info.fetch (1));
} else {
stdout.printf ("Does not match.\n");
}
if (/foo(bar)/i.match (s, 0, out info)) {
stdout.printf ("Lambda (lit.): %s -> %s\n", s, info.fetch (1));
} else {
stdout.printf ("Does not match.\n");
}
});
test.run ("fooBar");
test.run ("foobAr");
}
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