Stringยถ
Built-in string class.
Descriptionยถ
This is the built-in string class (and the one used by GDScript). It supports Unicode and provides all necessary means for string handling. Strings are reference-counted and use a copy-on-write approach, so passing them around is cheap in resources.
Tutorialsยถ
Methodsยถ
Method Descriptionsยถ
Constructs a new String from the given bool.
Constructs a new String from the given int.
Constructs a new String from the given float.
String String ( Vector2 from )
Constructs a new String from the given Vector2.
Constructs a new String from the given Rect2.
String String ( Vector3 from )
Constructs a new String from the given Vector3.
String String ( Transform2D from )
Constructs a new String from the given Transform2D.
Constructs a new String from the given Plane.
Constructs a new String from the given Quat.
Constructs a new String from the given AABB.
Constructs a new String from the given Basis.
String String ( Transform from )
Constructs a new String from the given Transform.
Constructs a new String from the given Color.
String String ( NodePath from )
Constructs a new String from the given NodePath.
Constructs a new String from the given RID.
String String ( Dictionary from )
Constructs a new String from the given Dictionary.
Constructs a new String from the given Array.
String String ( PoolByteArray from )
Constructs a new String from the given PoolByteArray.
String String ( PoolIntArray from )
Constructs a new String from the given PoolIntArray.
String String ( PoolRealArray from )
Constructs a new String from the given PoolRealArray.
String String ( PoolStringArray from )
Constructs a new String from the given PoolStringArray.
String String ( PoolVector2Array from )
Constructs a new String from the given PoolVector2Array.
String String ( PoolVector3Array from )
Constructs a new String from the given PoolVector3Array.
String String ( PoolColorArray from )
Constructs a new String from the given PoolColorArray.
bool begins_with ( String text )
Returns true if the string begins with the given string.
PoolStringArray bigrams ( )
Returns an array containing the bigrams (pairs of consecutive letters) of this string.
print("Bigrams".bigrams()) # Prints "[Bi, ig, gr, ra, am, ms]"
String c_escape ( )
Returns a copy of the string with special characters escaped using the C language standard.
String c_unescape ( )
Returns a copy of the string with escaped characters replaced by their meanings. Supported escape sequences are \', \", \?, \\, \a, \b, \f, \n, \r, \t, \v.
Note: Unlike the GDScript parser, this method doesn't support the \uXXXX escape sequence.
String capitalize ( )
Changes the case of some letters. Replaces underscores with spaces, adds spaces before in-word uppercase characters, converts all letters to lowercase, then capitalizes the first letter and every letter following a space character. For capitalize camelCase mixed_with_underscores, it will return Capitalize Camel Case Mixed With Underscores.
Performs a case-sensitive comparison to another string. Returns -1 if less than, 1 if greater than, or 0 if equal. "less than" or "greater than" are determined by the Unicode code points of each string, which roughly matches the alphabetical order.
Behavior with different string lengths: Returns 1 if the "base" string is longer than the to string or -1 if the "base" string is shorter than the to string. Keep in mind this length is determined by the number of Unicode codepoints, not the actual visible characters.
Behavior with empty strings: Returns -1 if the "base" string is empty, 1 if the to string is empty or 0 if both strings are empty.
To get a boolean result from a string comparison, use the == operator instead. See also nocasecmp_to.
int count ( String what, int from=0, int to=0 )
Returns the number of occurrences of substring what between from and to positions. If from and to equals 0 the whole string will be used. If only to equals 0 the remained substring will be used.
int countn ( String what, int from=0, int to=0 )
Returns the number of occurrences of substring what (ignoring case) between from and to positions. If from and to equals 0 the whole string will be used. If only to equals 0 the remained substring will be used.
String dedent ( )
Returns a copy of the string with indentation (leading tabs and spaces) removed. See also indent to add indentation.
bool empty ( )
Returns true if the length of the string equals 0.
bool ends_with ( String text )
Returns true if the string ends with the given string.
void erase ( int position, int chars )
Erases chars characters from the string starting from position.
int find ( String what, int from=0 )
Finds the first occurrence of a substring. Returns the starting position of the substring or -1 if not found. Optionally, the initial search index can be passed.
Note: If you just want to know whether a string contains a substring, use the in operator as follows:
# Will evaluate to `false`.
if "i" in "team":
pass
Finds the last occurrence of a substring. Returns the starting position of the substring or -1 if not found.
int findn ( String what, int from=0 )
Finds the first occurrence of a substring, ignoring case. Returns the starting position of the substring or -1 if not found. Optionally, the initial search index can be passed.
String format ( Variant values, String placeholder="{_}" )
Formats the string by replacing all occurrences of placeholder with the elements of values.
values can be a Dictionary or an Array. Any underscores in placeholder will be replaced with the corresponding keys in advance. Array elements use their index as keys.
# Prints: Waiting for Redot is a play by Samuel Beckett, and Redot Engine is named after it.
var use_array_values = "Waiting for {0} is a play by {1}, and {0} Engine is named after it."
print(use_array_values.format(["Godot", "Samuel Beckett"]))
# Prints: User 42 is Redot.
print("User {id} is {name}.".format({"id": 42, "name": "Godot"}))
Some additional handling is performed when values is an array. If placeholder does not contain an underscore, the elements of the array will be used to replace one occurrence of the placeholder in turn; If an array element is another 2-element array, it'll be interpreted as a key-value pair.
# Prints: User 42 is Redot.
print("User {} is {}.".format([42, "Godot"], "{}"))
print("User {id} is {name}.".format([["id", 42], ["name", "Godot"]]))
String get_base_dir ( )
If the string is a valid file path, returns the base directory name.
String get_basename ( )
If the string is a valid file path, returns the full file path without the extension.
String get_extension ( )
Returns the extension without the leading period character (.) if the string is a valid file name or path. If the string does not contain an extension, returns an empty string instead.
print("/path/to/file.txt".get_extension()) # "txt"
print("file.txt".get_extension()) # "txt"
print("file.sample.txt".get_extension()) # "txt"
print(".txt".get_extension()) # "txt"
print("file.txt.".get_extension()) # "" (empty string)
print("file.txt..".get_extension()) # "" (empty string)
print("txt".get_extension()) # "" (empty string)
print("".get_extension()) # "" (empty string)
String get_file ( )
If the string is a valid file path, returns the filename.
String get_slice ( String delimiter, int slice )
Splits a string using a delimiter and returns a substring at index slice. Returns the original string if delimiter does not occur in the string. Returns an empty string if the index doesn't exist.
This is a more performant alternative to split for cases when you need only one element from the array at a fixed index.
Example:
print("i/am/example/string".get_slice("/", 2)) # Prints 'example'.
int hash ( )
Returns the 32-bit hash value representing the string's contents.
Note: Strings with equal content will always produce identical hash values. However, the reverse is not true. Returning identical hash values does not imply the strings are equal, because different strings can have identical hash values due to hash collisions.
int hex_to_int ( )
Converts a string containing a hexadecimal number into an integer. Hexadecimal strings are expected to be prefixed with "0x" otherwise 0 is returned.
print("0xff".hex_to_int()) # Print "255"
String http_escape ( )
Escapes (encodes) a string to URL friendly format. Also referred to as 'URL encode'.
print("https://example.org/?escaped=" + "Redot Engine:'docs'".http_escape())
String http_unescape ( )
Unescapes (decodes) a string in URL encoded format. Also referred to as 'URL decode'.
print("https://example.org/?escaped=" + "Godot%20Engine%3A%27docs%27".http_unescape())
String humanize_size ( int size )
Converts size represented as number of bytes to human-readable format using internationalized set of data size units, namely: B, KiB, MiB, GiB, TiB, PiB, EiB. Note that the next smallest unit is picked automatically to hold at most 1024 units.
var bytes = 133790307
var size = String.humanize_size(bytes)
print(size) # prints "127.5 MiB"
String indent ( String prefix )
Returns a copy of the string with lines indented with prefix.
For example, the string can be indented with two tabs using "\t\t", or four spaces using " ". The prefix can be any string so it can also be used to comment out strings with e.g. "# ". See also dedent to remove indentation.
Note: Empty lines are kept empty.
String insert ( int position, String what )
Returns a copy of the string with the substring what inserted at the given position.
bool is_abs_path ( )
If the string is a path to a file or directory, returns true if the path is absolute.
bool is_rel_path ( )
If the string is a path to a file or directory, returns true if the path is relative.
bool is_subsequence_of ( String text )
Returns true if this string is a subsequence of the given string.
bool is_subsequence_ofi ( String text )
Returns true if this string is a subsequence of the given string, without considering case.
bool is_valid_filename ( )
Returns true if this string is free from characters that aren't allowed in file names, those being:
: / \ ? * " | % < >
bool is_valid_float ( )
Returns true if this string contains a valid float. This is inclusive of integers, and also supports exponents:
print("1.7".is_valid_float()) # Prints "True"
print("24".is_valid_float()) # Prints "True"
print("7e3".is_valid_float()) # Prints "True"
print("Hello".is_valid_float()) # Prints "False"
bool is_valid_hex_number ( bool with_prefix=false )
Returns true if this string contains a valid hexadecimal number. If with_prefix is true, then a validity of the hexadecimal number is determined by 0x prefix, for instance: 0xDEADC0DE.
bool is_valid_html_color ( )
Returns true if this string contains a valid color in hexadecimal HTML notation. Other HTML notations such as named colors or hsl() colors aren't considered valid by this method and will return false.
bool is_valid_identifier ( )
Returns true if this string is a valid identifier. A valid identifier may contain only letters, digits and underscores (_) and the first character may not be a digit.
print("good_ident_1".is_valid_identifier()) # Prints "True"
print("1st_bad_ident".is_valid_identifier()) # Prints "False"
print("bad_ident_#2".is_valid_identifier()) # Prints "False"
bool is_valid_integer ( )
Returns true if this string contains a valid integer.
print("7".is_valid_integer()) # Prints "True"
print("14.6".is_valid_integer()) # Prints "False"
print("L".is_valid_integer()) # Prints "False"
print("+3".is_valid_integer()) # Prints "True"
print("-12".is_valid_integer()) # Prints "True"
bool is_valid_ip_address ( )
Returns true if this string contains only a well-formatted IPv4 or IPv6 address. This method considers reserved IP addresses such as 0.0.0.0 as valid.
String join ( PoolStringArray parts )
Return a String which is the concatenation of the parts. The separator between elements is the string providing this method.
Example:
print(", ".join(["One", "Two", "Three", "Four"]))
String json_escape ( )
Returns a copy of the string with special characters escaped using the JSON standard.
Returns a number of characters from the left of the string.
int length ( )
Returns the string's amount of characters.
String lstrip ( String chars )
Returns a copy of the string with characters removed from the left. The chars argument is a string specifying the set of characters to be removed.
Note: The chars is not a prefix. See trim_prefix method that will remove a single prefix string rather than a set of characters.
Does a simple expression match (also called "glob" or "globbing"), where * matches zero or more arbitrary characters and ? matches any single character except a period (.). An empty string or empty expression always evaluates to false.
Does a simple case-insensitive expression match, where * matches zero or more arbitrary characters and ? matches any single character except a period (.). An empty string or empty expression always evaluates to false.
PoolByteArray md5_buffer ( )
Returns the MD5 hash of the string as an array of bytes.
String md5_text ( )
Returns the MD5 hash of the string as a string.
int naturalnocasecmp_to ( String to )
Performs a case-insensitive natural order comparison to another string. Returns -1 if less than, 1 if greater than, or 0 if equal. "less than" or "greater than" are determined by the Unicode code points of each string, which roughly matches the alphabetical order. Internally, lowercase characters will be converted to uppercase during the comparison.
When used for sorting, natural order comparison will order suites of numbers as expected by most people. If you sort the numbers from 1 to 10 using natural order, you will get [1, 2, 3, ...] instead of [1, 10, 2, 3, ...].
Behavior with different string lengths: Returns 1 if the "base" string is longer than the to string or -1 if the "base" string is shorter than the to string. Keep in mind this length is determined by the number of Unicode codepoints, not the actual visible characters.
Behavior with empty strings: Returns -1 if the "base" string is empty, 1 if the to string is empty or 0 if both strings are empty.
To get a boolean result from a string comparison, use the == operator instead. See also nocasecmp_to and casecmp_to.
int nocasecmp_to ( String to )
Performs a case-insensitive comparison to another string. Returns -1 if less than, 1 if greater than, or 0 if equal. "less than" or "greater than" are determined by the Unicode code points of each string, which roughly matches the alphabetical order. Internally, lowercase characters will be converted to uppercase during the comparison.
Behavior with different string lengths: Returns 1 if the "base" string is longer than the to string or -1 if the "base" string is shorter than the to string. Keep in mind this length is determined by the number of Unicode codepoints, not the actual visible characters.
Behavior with empty strings: Returns -1 if the "base" string is empty, 1 if the to string is empty or 0 if both strings are empty.
To get a boolean result from a string comparison, use the == operator instead. See also casecmp_to.
Returns the character code at position at.
String pad_decimals ( int digits )
Formats a number to have an exact number of digits after the decimal point.
String pad_zeros ( int digits )
Formats a number to have an exact number of digits before the decimal point.
String percent_decode ( )
Decode a percent-encoded string (also called URI-encoded string). See also percent_encode.
String percent_encode ( )
Percent-encodes a string (also called URI-encoded string). Encodes parameters in a URL when sending a HTTP GET request (and bodies of form-urlencoded POST requests). See also percent_decode.
String plus_file ( String file )
If the string is a path, this concatenates file at the end of the string as a subpath. E.g. "this/is".plus_file("path") == "this/is/path".
Returns original string repeated a number of times. The number of repetitions is given by the argument.
String replace ( String what, String forwhat )
Replaces occurrences of a case-sensitive substring with the given one inside the string.
String replacen ( String what, String forwhat )
Replaces occurrences of a case-insensitive substring with the given one inside the string.
int rfind ( String what, int from=-1 )
Performs a case-sensitive search for a substring, but starts from the end of the string instead of the beginning.
int rfindn ( String what, int from=-1 )
Performs a case-insensitive search for a substring, but starts from the end of the string instead of the beginning.
Returns the right side of the string from a given position.
PoolStringArray rsplit ( String delimiter, bool allow_empty=true, int maxsplit=0 )
Splits the string by a delimiter string and returns an array of the substrings, starting from right.
The splits in the returned array are sorted in the same order as the original string, from left to right.
If allow_empty is true, and there are two adjacent delimiters in the string, it will add an empty string to the array of substrings at this position.
If maxsplit is specified, it defines the number of splits to do from the right up to maxsplit. The default value of 0 means that all items are split, thus giving the same result as split.
Example:
var some_string = "One,Two,Three,Four"
var some_array = some_string.rsplit(",", true, 1)
print(some_array.size()) # Prints 2
print(some_array[0]) # Prints "One,Two,Three"
print(some_array[1]) # Prints "Four"
String rstrip ( String chars )
Returns a copy of the string with characters removed from the right. The chars argument is a string specifying the set of characters to be removed.
Note: The chars is not a suffix. See trim_suffix method that will remove a single suffix string rather than a set of characters.
PoolByteArray sha1_buffer ( )
Returns the SHA-1 hash of the string as an array of bytes.
String sha1_text ( )
Returns the SHA-1 hash of the string as a string.
PoolByteArray sha256_buffer ( )
Returns the SHA-256 hash of the string as an array of bytes.
String sha256_text ( )
Returns the SHA-256 hash of the string as a string.
float similarity ( String text )
Returns the similarity index (Sorensen-Dice coefficient) of this string compared to another. A result of 1.0 means totally similar, while 0.0 means totally dissimilar.
print("ABC123".similarity("ABC123")) # Prints "1"
print("ABC123".similarity("XYZ456")) # Prints "0"
print("ABC123".similarity("123ABC")) # Prints "0.8"
print("ABC123".similarity("abc123")) # Prints "0.4"
String simplify_path ( )
Returns a simplified canonical path.
PoolStringArray split ( String delimiter, bool allow_empty=true, int maxsplit=0 )
Splits the string by a delimiter string and returns an array of the substrings. The delimiter can be of any length.
If allow_empty is true, and there are two adjacent delimiters in the string, it will add an empty string to the array of substrings at this position.
If maxsplit is specified, it defines the number of splits to do from the left up to maxsplit. The default value of 0 means that all items are split.
If you need only one element from the array at a specific index, get_slice is a more performant option.
Example:
var some_string = "One,Two,Three,Four"
var some_array = some_string.split(",", true, 1)
print(some_array.size()) # Prints 2
print(some_array[0]) # Prints "One"
print(some_array[1]) # Prints "Two,Three,Four"
If you need to split strings with more complex rules, use the RegEx class instead.
PoolRealArray split_floats ( String delimiter, bool allow_empty=true )
Splits the string in floats by using a delimiter string and returns an array of the substrings.
For example, "1,2.5,3" will return [1,2.5,3] if split by ",".
If allow_empty is true, and there are two adjacent delimiters in the string, it will add an empty string to the array of substrings at this position.
String strip_edges ( bool left=true, bool right=true )
Returns a copy of the string stripped of any non-printable character (including tabulations, spaces and line breaks) at the beginning and the end. The optional arguments are used to toggle stripping on the left and right edges respectively.
String strip_escapes ( )
Returns a copy of the string stripped of any escape character. These include all non-printable control characters of the first page of the ASCII table (< 32), such as tabulation (\t in C) and newline (\n and \r) characters, but not spaces.
String substr ( int from, int len=-1 )
Returns part of the string from the position from with length len. Argument len is optional and using -1 will return remaining characters from given position.
PoolByteArray to_ascii ( )
Converts the String (which is a character array) to PoolByteArray (which is an array of bytes). The conversion is faster compared to to_utf8, as this method assumes that all the characters in the String are ASCII characters.
float to_float ( )
Converts a string containing a decimal number into a float. The method will stop on the first non-number character except the first . (decimal point), and e which is used for exponential.
print("12.3".to_float()) # 12.3
print("1.2.3".to_float()) # 1.2
print("12ab3".to_float()) # 12
print("1e3".to_float()) # 1000
int to_int ( )
Converts a string containing an integer number into an int. The method will remove any non-number character and stop if it encounters a ..
print("123".to_int()) # 123
print("a1b2c3".to_int()) # 123
print("1.2.3".to_int()) # 1
String to_lower ( )
Returns the string converted to lowercase.
String to_upper ( )
Returns the string converted to uppercase.
PoolByteArray to_utf8 ( )
Converts the String (which is an array of characters) to PoolByteArray (which is an array of bytes). The conversion is a bit slower than to_ascii, but supports all UTF-8 characters. Therefore, you should prefer this function over to_ascii.
PoolByteArray to_wchar ( )
Converts the String (which is an array of characters) to PoolByteArray (which is an array of bytes).
String trim_prefix ( String prefix )
Removes a given string from the start if it starts with it or leaves the string unchanged.
String trim_suffix ( String suffix )
Removes a given string from the end if it ends with it or leaves the string unchanged.
String validate_node_name ( )
Removes any characters from the string that are prohibited in Node names (. : @ / ").
String xml_escape ( )
Returns a copy of the string with special characters escaped using the XML standard.
String xml_unescape ( )
Returns a copy of the string with escaped characters replaced by their meanings according to the XML standard.