[Vala] How to print all letters from a (UTF) string?

[muze4life]

Hi folks,
Say I have:
string s = "天安門廣場";
how do I print in a loop each letter at a time till I reach the end of the string?
Notice that it won't work printing each byte at a time since this UTF8 string contains letters larger than one byte.
Any working solutions?

Can't figure out how to do this in Vala..

[aanderse]

i'm not sure how to properly print a single unichar so just ignore the printing part... but this accomplishes what you want:



void main () {

string content = "天安門廣場";

if (!content.validate ()) {

stdout.printf ("invalid utf8 string\n");
return;

}

for (unowned string s = content; s.get_char () != 0; s = s.next_char ()) {

unichar c = s.get_char ();

var sb = new StringBuilder ();
sb.append_unichar (c);
stdout.printf ("%s\n", sb.str);

}

}



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[muze4life]

Thanks a lot! Your code works!
unichar in Vala 0.10 already has a to_string() method, so this is my final version:



void main () {
string content = "天安門廣場";

if (!content.validate ()) {
stdout.printf ("invalid utf8 string\n");
return;
}

for (unowned string s = content; s.get_char () != 0; s = s.next_char ()) {
stdout.printf ("%s\n", s.get_char().to_string());
}
}