string_validator
library
Functions
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blacklist(String str, String chars)
→ String
-
remove characters that appear in the blacklist.
-
contains(String str, String substring)
→ bool
-
check if the string contains the substring
-
equals(String str, Object? comparison)
→ bool
-
check if the string matches the comparison
-
escape(String str)
→ String
-
replace
<, >, &, ' and " with HTML entities
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isAfter(String str, [String? date])
→ bool
-
check if the string is a date that's after the specified date
-
isAlpha(String str)
→ bool
-
check if the string contains only letters (a-zA-Z).
-
isAlphanumeric(String str)
→ bool
-
check if the string contains only letters and numbers
-
isAscii(String str)
→ bool
-
check if the string contains ASCII chars only
-
isBase64(String str)
→ bool
-
check if a string is base64 encoded
-
isBefore(String str, [String? date])
→ bool
-
check if the string is a date that's before the specified date
-
isByteLength(String str, int min, [int? max])
→ bool
-
check if the string's length (in bytes) falls in a range.
-
isCreditCard(String str)
→ bool
-
check if the string is a credit card
-
isDate(String str)
→ bool
-
check if the string is a date
-
isDivisibleBy(String str, Object n)
→ bool
-
check if the string is a number that's divisible by another
-
isEmail(String str)
→ bool
-
check if the string is an email
-
isFloat(String str)
→ bool
-
check if the string is a float
-
isFQDN(String str, [Map<String, Object>? options])
→ bool
-
check if the string is a fully qualified domain name (e.g. domain.com).
-
isFullWidth(String str)
→ bool
-
check if the string contains any full-width chars
-
isHalfWidth(String str)
→ bool
-
check if the string contains any half-width chars
-
isHexadecimal(String str)
→ bool
-
check if the string is a hexadecimal number
-
isHexColor(String str)
→ bool
-
check if the string is a hexadecimal color
-
isIn(String str, Object? values)
→ bool
-
check if the string is in an array of allowed values
-
isInt(String str)
→ bool
-
check if the string is an integer
-
isIP(String str, [Object? version])
→ bool
-
check if the string is an IP (version 4 or 6)
-
isISBN(String str, [Object? version])
→ bool
-
check if the string is an ISBN (version 10 or 13)
-
isJson(String str)
→ bool
-
check if the string is valid JSON
-
isLength(String str, int min, [int? max])
→ bool
-
check if the string's length falls in a range
If no max is given then any length above min is ok.
-
isLowercase(String str)
→ bool
-
check if the string is lowercase
-
isMongoId(String str)
→ bool
-
check if the string is a valid hex-encoded representation of a MongoDB ObjectId
-
isMultibyte(String str)
→ bool
-
check if the string contains one or more multibyte chars
-
isNumeric(String str)
→ bool
-
check if the string contains only numbers
-
isSurrogatePair(String str)
→ bool
-
check if the string contains any surrogate pairs chars
-
isUppercase(String str)
→ bool
-
check if the string is uppercase
-
isURL(String? input, [Map<String, Object>? options])
→ bool
-
check if the string is a URL
-
isUUID(String str, [Object? version])
→ bool
-
check if the string is a UUID (version 3, 4 or 5).
-
isVariableWidth(String str)
→ bool
-
check if the string contains a mixture of full and half-width chars
-
ltrim(String str, [String? chars])
→ String
-
trim characters from the left-side of the input
-
matches(String str, String pattern)
→ bool
-
check if string matches the pattern.
-
normalizeEmail(String email, [Map<String, Object>? options])
→ String
-
canonicalize an email address.
-
rtrim(String str, [String? chars])
→ String
-
trim characters from the right-side of the input
-
stripLow(String str, [bool keepNewLines = false])
→ String
-
remove characters with a numerical value < 32 and 127.
-
toBoolean(String str, [bool strict = false])
→ bool
-
convert the input to a boolean.
-
toDate(String str)
→ DateTime?
-
convert the input to a date, or null if the input is not a date
-
toDouble(String str)
→ double
-
convert the input to a float, or NAN if the input is not a float
-
toFloat(String str)
→ double
-
convert the input to a float, or NAN if the input is not a float
-
toInt(String str, {int radix = 10})
→ num
-
convert the input to an integer, or NAN if the input is not an integer
-
toString(Object? input)
→ String
-
convert the input to a string
-
trim(String str, [String? chars])
→ String
-
trim characters (whitespace by default) from both sides of the input
-
whitelist(String str, String chars)
→ String
-
remove characters that do not appear in the whitelist.
