lu.string

String manipulation functions complementing the standard library.

Members

Classes

AdvanceException class AdvanceException: Exception, to be thrown when a call to advancePast went wrong.
AdvanceExceptionImpl class AdvanceExceptionImpl(Haystack, Needle): Exception, to be thrown when a call to advancePast went wrong.

Enums

SplitResults enum SplitResults: The result of a call to splitInto.

Functions

advancePast auto advancePast(Haystack haystack, Needle needle, Flag!"inherit" inherit, string callingFile, size_t callingLine): Given some string, finds the supplied needle token in it, returns the string up to that point, and advances the passed string by ref to after the token.
decode64 string decode64(string encoded): Base64-decodes a string.
encode64 string encode64(string line): Base64-encodes a string.
escapeControlCharacters string escapeControlCharacters(string line): Replaces the control characters '\n', '\t', '\r' and '\0' with the escaped "\\n", "\\t", "\\r" and "\\0". Does not allocate a new string if there was nothing to escape.
indent string indent(string wallOfText, uint numTabs, uint skip): Indents lines in a string with the supplied number of tabs. Returns a newly allocated string.
indentInto void indentInto(string wallOfText, Sink sink, uint numTabs, uint skip): Indents lines in a string into an output range sink with the supplied number of tabs.
plurality T plurality(Num num, T singular, T plural): Selects the correct singular or plural form of a word depending on the numerical count of it.
removeControlCharacters string removeControlCharacters(string line): Removes the control characters '\n', '\t', '\r' and '\0' from a string. Does not allocate a new string if there was nothing to remove.
replaceFromAA auto replaceFromAA(string line, Fn[string] aa): Replaces space-separated tokens (that begin with a token character) in a string with values from a supplied associative array.
splitInto auto splitInto(string slice, Strings strings, string[] overflow): Splits a string by a passed separator and assign the delimited words to the passed strings by ref. Overload that stores overflow strings into a passed array.
splitInto auto splitInto(string slice, Strings strings): Splits a string by a passed separator and assign the delimited words to the passed strings by ref.
splitLineAtPosition auto splitLineAtPosition(Line line, Separator separator, size_t maxLength): 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.
splitWithQuotes auto splitWithQuotes(string line): Splits a string into an array of strings by whitespace, but honours quotes.
stripSuffix auto stripSuffix(string line, string suffix): Strips the supplied string from the end of a string.
stripped auto stripped(string line): Returns a slice of the passed string with any preceding or trailing whitespace or linebreaks sliced off both ends. Overload that implicitly strips " \n\r\t".
stripped auto stripped(Line line, Chaff chaff): Returns a slice of the passed string with any preceding or trailing passed characters sliced off. Implementation template capable of handling both individual characters and strings of tokens to strip.
strippedLeft auto strippedLeft(string line): Returns a slice of the passed string with any preceding whitespace and/or linebreaks sliced off. Overload that implicitly strips " \n\r\t".
strippedLeft auto strippedLeft(Line line, Chaff chaff): Returns a slice of the passed string with any preceding passed characters sliced off. Implementation capable of handling both individual characters and strings of tokens to strip.
strippedRight auto strippedRight(string line): Returns a slice of the passed string with any trailing whitespace and/or linebreaks sliced off. Overload that implicitly strips " \n\r\t".
strippedRight auto strippedRight(Line line, Chaff chaff): Returns a slice of the passed string with any trailing passed characters. Implementation template capable of handling both individual characters and string of tokens to strip.
tabs auto tabs(int num): Returns a range of *spaces* equal to that of num tabs (\t).
unenclosed auto unenclosed(string line): Removes paired preceding and trailing tokens around a string line. Assumes ASCII.
unquoted auto unquoted(string line): Removes paired preceding and trailing double quotes, unquoting a word. Assumes ASCII.
unsinglequoted auto unsinglequoted(string line): Removes paired preceding and trailing single quotes around a line. Assumes ASCII.

Examples

{
    string line = "Lorem ipsum :sit amet";
    immutable lorem = line.advancePast(" :");
    assert(lorem == "Lorem ipsum", lorem);
    assert(line == "sit amet", line);
}
{
    string line = "Lorem ipsum :sit amet";
    immutable lorem = line.advancePast(':');
    assert(lorem == "Lorem ipsum ", lorem);
    assert(line == "sit amet", line);
}
{
    string line = "Lorem ipsum sit amet";  // mutable, will be modified by ref
    string[] words;

    while (line.length > 0)
    {
        immutable word = line.advancePast(" ", Yes.inherit);
        words ~= word;
    }

    assert(words == [ "Lorem", "ipsum", "sit", "amet" ]);
}

lu.string

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