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strings.py
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# Contains code from https://github.com/ibis-project/ibis/blob/9.2.0/ibis/expr/operations/strings.py
"""String operations."""
from __future__ import annotations
from typing import Optional
from bigframes_vendored.ibis.common.annotations import attribute
from bigframes_vendored.ibis.common.typing import VarTuple # noqa: TCH001
import bigframes_vendored.ibis.expr.datatypes as dt
from bigframes_vendored.ibis.expr.operations.core import Unary, Value
import bigframes_vendored.ibis.expr.rules as rlz
from public import public
@public
class StringUnary(Unary):
"""Base class for string operations accepting one argument."""
arg: Value[dt.String]
dtype = dt.string
@public
class Uppercase(StringUnary):
"""Convert a string to uppercase."""
@public
class Lowercase(StringUnary):
"""Convert a string to lowercase."""
@public
class Reverse(StringUnary):
"""Reverse a string."""
@public
class Strip(StringUnary):
"""Strip leading and trailing whitespace."""
@public
class LStrip(StringUnary):
"""Strip leading whitespace."""
@public
class RStrip(StringUnary):
"""Strip trailing whitespace."""
@public
class Capitalize(StringUnary):
"""Capitalize the first letter of a string."""
@public
class Substring(Value):
"""Extract a substring from a string."""
arg: Value[dt.String]
start: Value[dt.Integer]
length: Optional[Value[dt.Integer]] = None
dtype = dt.string
shape = rlz.shape_like("args")
@public
class StringSlice(Value):
"""Extract a substring from a string."""
arg: Value[dt.String]
start: Optional[Value[dt.Integer]] = None
end: Optional[Value[dt.Integer]] = None
dtype = dt.string
shape = rlz.shape_like("args")
@public
class StrRight(Value):
"""Extract a substring starting from the right of a string."""
arg: Value[dt.String]
nchars: Value[dt.Integer]
shape = rlz.shape_like("args")
dtype = dt.string
@public
class Repeat(Value):
"""Repeat a string."""
arg: Value[dt.String]
times: Value[dt.Integer]
shape = rlz.shape_like("args")
dtype = dt.string
@public
class StringFind(Value):
"""Find the position of a substring in a string."""
arg: Value[dt.String]
substr: Value[dt.String]
start: Optional[Value[dt.Integer]] = None
end: Optional[Value[dt.Integer]] = None
shape = rlz.shape_like("args")
dtype = dt.int64
@public
class Translate(Value):
"""Translate characters in a string."""
arg: Value[dt.String]
from_str: Value[dt.String]
to_str: Value[dt.String]
shape = rlz.shape_like("args")
dtype = dt.string
@public
class LPad(Value):
"""Pad a string on the left."""
arg: Value[dt.String]
length: Value[dt.Integer]
pad: Optional[Value[dt.String]] = None
shape = rlz.shape_like("args")
dtype = dt.string
@public
class RPad(Value):
"""Pad a string on the right."""
arg: Value[dt.String]
length: Value[dt.Integer]
pad: Optional[Value[dt.String]] = None
shape = rlz.shape_like("args")
dtype = dt.string
@public
class FindInSet(Value):
"""Find the position of a string in a list of comma-separated strings."""
needle: Value[dt.String]
values: VarTuple[Value[dt.String]]
shape = rlz.shape_like("needle")
dtype = dt.int64
@public
class StringJoin(Value):
"""Join strings with a separator."""
arg: VarTuple[Value[dt.String]]
sep: Value[dt.String]
dtype = dt.string
@attribute
def shape(self):
return rlz.highest_precedence_shape((self.sep, *self.arg))
@public
class ArrayStringJoin(Value):
"""Join strings in an array with a separator."""
arg: Value[dt.Array[dt.String]]
sep: Value[dt.String]
dtype = dt.string
shape = rlz.shape_like("args")
@public
class StartsWith(Value):
"""Check if a string starts with another string."""
arg: Value[dt.String]
start: Value[dt.String]
dtype = dt.boolean
shape = rlz.shape_like("args")
@public
class EndsWith(Value):
"""Check if a string ends with another string."""
arg: Value[dt.String]
end: Value[dt.String]
dtype = dt.boolean
shape = rlz.shape_like("args")
@public
class FuzzySearch(Value):
arg: Value[dt.String]
pattern: Value[dt.String]
dtype = dt.boolean
shape = rlz.shape_like("args")
@public
class StringSQLLike(FuzzySearch):
"""SQL LIKE string match operation.
Similar to globbing.
"""
arg: Value[dt.String]
pattern: Value[dt.String]
escape: Optional[str] = None
@public
class StringSQLILike(StringSQLLike):
"""Case-insensitive SQL LIKE string match operation.
Similar to case-insensitive globbing.
"""
@public
class RegexSearch(FuzzySearch):
"""Search a string with a regular expression."""
@public
class RegexExtract(Value):
"""Extract a substring from a string using a regular expression."""
arg: Value[dt.String]
pattern: Value[dt.String]
index: Value[dt.Integer]
shape = rlz.shape_like("args")
dtype = dt.string
@public
class RegexSplit(Value):
"""Split a string using a regular expression."""
arg: Value[dt.String]
pattern: Value[dt.String]
shape = rlz.shape_like("args")
dtype = dt.Array(dt.string)
@public
class RegexReplace(Value):
"""Replace a substring in a string using a regular expression."""
arg: Value[dt.String]
pattern: Value[dt.String]
replacement: Value[dt.String]
shape = rlz.shape_like("args")
dtype = dt.string
@public
class StringReplace(Value):
"""Replace a substring in a string with another string."""
arg: Value[dt.String]
pattern: Value[dt.String]
replacement: Value[dt.String]
shape = rlz.shape_like("args")
dtype = dt.string
@public
class StringSplit(Value):
"""Split a string using a delimiter."""
arg: Value[dt.String]
delimiter: Value[dt.String]
shape = rlz.shape_like("args")
dtype = dt.Array(dt.string)
@public
class StringConcat(Value):
"""Concatenate strings."""
arg: VarTuple[Value[dt.String]]
shape = rlz.shape_like("arg")
dtype = rlz.dtype_like("arg")
@public
class ExtractURLField(StringUnary):
pass
@public
class ExtractProtocol(ExtractURLField):
"""Extract the protocol from a URL."""
@public
class ExtractAuthority(ExtractURLField):
"""Extract the authority from a URL."""
@public
class ExtractUserInfo(ExtractURLField):
"""Extract the user info from a URL."""
@public
class ExtractHost(ExtractURLField):
"""Extract the host from a URL."""
@public
class ExtractFile(ExtractURLField):
"""Extract the file from a URL."""
@public
class ExtractPath(ExtractURLField):
"""Extract the path from a URL."""
@public
class ExtractQuery(ExtractURLField):
"""Extract the query from a URL."""
key: Optional[Value[dt.String]] = None
@public
class ExtractFragment(ExtractURLField):
"""Extract the fragment from a URL."""
@public
class StringLength(StringUnary):
"""Compute the length of a string."""
dtype = dt.int64
@public
class StringAscii(StringUnary):
"""Compute the ASCII code of the first character of a string."""
dtype = dt.int64
@public
class StringContains(Value):
"""Check if a string contains a substring."""
haystack: Value[dt.String]
needle: Value[dt.String]
shape = rlz.shape_like("args")
dtype = dt.bool
@public
class Levenshtein(Value):
"""Compute the Levenshtein distance between two strings."""
left: Value[dt.String]
right: Value[dt.String]
dtype = dt.int64
shape = rlz.shape_like("args")