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static_regex_replace.ts
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static_regex_replace.ts
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/**
* @license
* Copyright 2023 Google LLC.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* =============================================================================
*/
import {ENGINE} from '../../engine';
import {StaticRegexReplace, StaticRegexReplaceAttrs} from '../../kernel_names';
import {NamedAttrMap} from '../../kernel_registry';
import {Tensor} from '../../tensor';
import {convertToTensor} from '../../tensor_util_env';
import {TensorLike} from '../../types';
import {op} from '../operation';
/**
* Replace the match of a `pattern` in `input` with `rewrite`.
*
* ```js
* const result = tf.string.staticRegexReplace(
* ['format this spacing better'], ' +', ' ');
* result.print(); // ['format this spacing better']
* ```
* @param input: A Tensor of type string. The text to be processed.
* @param pattern: A string. The regular expression to match the input.
* @param rewrite: A string. The rewrite to be applied to the matched
* expression.
* @param replaceGlobal: An optional bool. Defaults to True. If True, the
* replacement is global, otherwise the replacement is done only on the
* first match.
* @return A Tensor of type string.
*
* @doc {heading: 'Operations', subheading: 'String'}
*/
function staticRegexReplace_(
input: Tensor | TensorLike, pattern: string, rewrite: string,
replaceGlobal=true): Tensor {
const $input = convertToTensor(input, 'input', 'staticRegexReplace',
'string');
const attrs: StaticRegexReplaceAttrs = {pattern, rewrite, replaceGlobal};
return ENGINE.runKernel(StaticRegexReplace, {x: $input},
attrs as unknown as NamedAttrMap);
}
export const staticRegexReplace = /* @__PURE__ */ op({staticRegexReplace_});