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ee214cb886
Added support for searching content in a specific directory or file. Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/6143 Reviewed-by: Gusted <gusted@noreply.codeberg.org> Reviewed-by: 0ko <0ko@noreply.codeberg.org> Co-authored-by: Shiny Nematoda <snematoda.751k2@aleeas.com> Co-committed-by: Shiny Nematoda <snematoda.751k2@aleeas.com>
69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
// Copyright 2024 The Forgejo Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package hierarchy
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import (
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"bytes"
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"github.com/blevesearch/bleve/v2/analysis"
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"github.com/blevesearch/bleve/v2/registry"
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)
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const Name = "path_hierarchy"
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type PathHierarchyTokenizer struct{}
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// Similar to elastic's path_hierarchy tokenizer
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// This tokenizes a given path into all the possible hierarchies
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// For example,
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// modules/indexer/code/search.go =>
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//
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// modules/
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// modules/indexer
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// modules/indexer/code
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// modules/indexer/code/search.go
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func (t *PathHierarchyTokenizer) Tokenize(input []byte) analysis.TokenStream {
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// trim any extra slashes
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input = bytes.Trim(input, "/")
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// zero allocations until the nested directories exceed a depth of 8 (which is unlikely)
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rv := make(analysis.TokenStream, 0, 8)
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count, off := 1, 0
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// iterate till all directory seperators
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for i := bytes.IndexRune(input[off:], '/'); i != -1; i = bytes.IndexRune(input[off:], '/') {
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// the index is relative to input[offest...]
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// add this index to the accumlated offset to get the index of the current seperator in input[0...]
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off += i
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rv = append(rv, &analysis.Token{
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Term: input[:off], // take the slice, input[0...index of seperator]
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Start: 0,
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End: off,
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Position: count,
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Type: analysis.AlphaNumeric,
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})
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// increment the offset after considering the seperator
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off++
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count++
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}
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// the entire file path should always be the last token
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rv = append(rv, &analysis.Token{
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Term: input,
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Start: 0,
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End: len(input),
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Position: count,
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Type: analysis.AlphaNumeric,
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})
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return rv
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}
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func TokenizerConstructor(config map[string]any, cache *registry.Cache) (analysis.Tokenizer, error) {
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return &PathHierarchyTokenizer{}, nil
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}
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func init() {
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registry.RegisterTokenizer(Name, TokenizerConstructor)
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}
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