Decodes each string in input
into a sequence of Unicode code points.
tf.raw_ops.UnicodeDecode( input, input_encoding, errors='replace', replacement_char=65533, replace_control_characters=False, Tsplits=tf.dtypes.int64, name=None )
The character codepoints for all strings are returned using a single vector char_values
, with strings expanded to characters in row-major order.
The row_splits
tensor indicates where the codepoints for each input string begin and end within the char_values
tensor. In particular, the values for the i
th string (in row-major order) are stored in the slice [row_splits[i]:row_splits[i+1]]
. Thus:
char_values[row_splits[i]+j]
is the Unicode codepoint for the j
th character in the i
th string (in row-major order).row_splits[i+1] - row_splits[i]
is the number of characters in the i
th string (in row-major order).Args | |
---|---|
input | A Tensor of type string . The text to be decoded. Can have any shape. Note that the output is flattened to a vector of char values. |
input_encoding | A string . Text encoding of the input strings. This is any of the encodings supported by ICU ucnv algorithmic converters. Examples: "UTF-16", "US ASCII", "UTF-8" . |
errors | An optional string from: "strict", "replace", "ignore" . Defaults to "replace" . Error handling policy when there is invalid formatting found in the input. The value of 'strict' will cause the operation to produce a InvalidArgument error on any invalid input formatting. A value of 'replace' (the default) will cause the operation to replace any invalid formatting in the input with the replacement_char codepoint. A value of 'ignore' will cause the operation to skip any invalid formatting in the input and produce no corresponding output character. |
replacement_char | An optional int . Defaults to 65533 . The replacement character codepoint to be used in place of any invalid formatting in the input when errors='replace' . Any valid unicode codepoint may be used. The default value is the default unicode replacement character is 0xFFFD or U+65533.) |
replace_control_characters | An optional bool . Defaults to False . Whether to replace the C0 control characters (00-1F) with the replacement_char . Default is false. |
Tsplits | An optional tf.DType from: tf.int32, tf.int64 . Defaults to tf.int64 . |
name | A name for the operation (optional). |
Returns | |
---|---|
A tuple of Tensor objects (row_splits, char_values). | |
row_splits | A Tensor of type Tsplits . |
char_values | A Tensor of type int32 . |
© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.3/api_docs/python/tf/raw_ops/UnicodeDecode