format
Function parameters
Parameters
The C0 control codes of the ASCII encoding.
Types
- control_code
- The C0 control codes of the ASCII encoding.
Returns whether the character is alphanumeric: A-Z, a-z, or 0-9.
Functions
- isAlphanumeric
- Returns whether the character is alphanumeric: A-Z, a-z, or 0-9.
- isAlphabetic
- Returns whether the character is alphabetic: A-Z or a-z.
- isControl
- Returns whether the character is a control character.
- isDigit
- Returns whether the character is a digit.
- isLower
- Returns whether the character is a lowercase letter.
- isPrint
- Returns whether the character is printable and has some graphical representation,
- isWhitespace
- Returns whether this character is included in `whitespace`.
- isUpper
- Returns whether the character is an uppercase letter.
- isHex
- Returns whether the character is a hexadecimal digit: A-F, a-f, or 0-9.
- isAscii
- Returns whether the character is a 7-bit ASCII character.
- toUpper
- Uppercases the character and returns it as-is if already uppercase or not a letter.
- toLower
- Lowercases the character and returns it as-is if already lowercase or not a letter.
- lowerString
- Writes a lower case copy of `ascii_string` to `output`.
- allocLowerString
- Allocates a lower case copy of `ascii_string`.
- upperString
- Writes an upper case copy of `ascii_string` to `output`.
- allocUpperString
- Allocates an upper case copy of `ascii_string`.
- eqlIgnoreCase
- Compares strings `a` and `b` case-insensitively and returns whether they are equal.
- indexOfIgnoreCase
- Finds `needle` in `haystack`, ignoring case, starting at index 0.
- indexOfIgnoreCasePos
- Finds `needle` in `haystack`, ignoring case, starting at `start_index`.
- indexOfIgnoreCasePosLinear
- Consider using `indexOfIgnoreCasePos` instead of this, which will automatically use a
- orderIgnoreCase
- Returns the lexicographical order of two slices.
- lessThanIgnoreCase
- Returns whether the lexicographical order of `lhs` is lower than `rhs`.
- hexEscape
- Replaces non-ASCII bytes with hex escapes.
= "abcdefghijklmnopqrstuvwxyz"
Values
- lowercase
- = "abcdefghijklmnopqrstuvwxyz"
- uppercase
- = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- letters
- = lowercase ++ uppercase
- whitespace
- Whitespace for general use.
Source
Implementation
pub fn format(se: HexEscape, w: *std.io.Writer) std.io.Writer.Error!void {
const charset = se.charset;
var buf: [4]u8 = undefined;
buf[0] = '\\';
buf[1] = 'x';
for (se.bytes) |c| {
if (std.ascii.isPrint(c)) {
try w.writeByte(c);
} else {
buf[2] = charset[c >> 4];
buf[3] = charset[c & 15];
try w.writeAll(&buf);
}
}
}