splitLineAtPosition

Splits a string with on boundary as delimited by a supplied separator, into one or more more lines not longer than the passed maximum length.

If a line cannot be split due to the line being too short or the separator not occurring in the text, it is added to the returned array as-is and no more splitting is done.

@safe pure

auto

splitLineAtPosition

(

Line

Separator

)

(

const Line line

const Separator separator

const size_t maxLength

)

Parameters

line Line: String line to split.
separator Separator: Separator character with which to split the line.
maxLength size_t: Maximum length of the separated lines.

Return Value

Type: auto

A T[] array with lines split out of the passed line.

Examples

string line = "I am a fish in a sort of long sentence~";
enum maxLineLength = 20;
auto splitLines = line.splitLineAtPosition(' ', maxLineLength);

assert(splitLines[0] == "I am a fish in a");
assert(splitLines[1] == "sort of a long");
assert(splitLines[2] == "sentence~");

import std.conv : text;

{
    immutable prelude = "PRIVMSG #garderoben :";
    immutable maxLength = 250 - prelude.length;

    immutable rawLine = "Lorem ipsum dolor sit amet, ea has velit noluisse, " ~
        "eos eius appetere constituto no, ad quas natum eos. Perpetua " ~
        "electram mnesarchum usu ne, mei vero dolorem no. Ea quando scripta " ~
        "quo, minim legendos ut vel. Ut usu graece equidem posidonium. Ius " ~
        "denique ponderum verterem no, quo te mentitum officiis referrentur. " ~
        "Sed an dolor iriure vocibus. " ~
        "Lorem ipsum dolor sit amet, ea has velit noluisse, " ~
        "eos eius appetere constituto no, ad quas natum eos. Perpetua " ~
        "electram mnesarchum usu ne, mei vero dolorem no. Ea quando scripta " ~
        "quo, minim legendos ut vel. Ut usu graece equidem posidonium. Ius " ~
        "denique ponderum verterem no, quo te mentitum officiis referrentur. " ~
        "Sed an dolor iriure vocibus. ssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "ssssssssssssssssssssssssssssssssssssssssssssssssssssssss";
    const splitLines = rawLine.splitLineAtPosition(' ', maxLength);
    assert((splitLines.length == 4), splitLines.length.text);
}
{
    immutable prelude = "PRIVMSG #garderoben :";
    immutable maxLength = 250 - prelude.length;

    immutable rawLine = "ssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss" ~
        "ssssssssssssssssssssssssssssssssssssssssssssssssssssssss";
    const splitLines = rawLine.splitLineAtPosition(' ', maxLength);
    assert((splitLines.length == 1), splitLines.length.text);
    assert(splitLines[0] == rawLine);
}