mirror of
https://codeberg.org/forgejo/forgejo
synced 2024-09-14 10:51:00 +02:00
68 lines
1.8 KiB
Go
Vendored
68 lines
1.8 KiB
Go
Vendored
// Copyright (c) 2014 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package searcher
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import (
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"net"
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"github.com/blevesearch/bleve/v2/search"
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index "github.com/blevesearch/bleve_index_api"
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)
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// netLimits returns the lo and hi bounds inside the network.
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func netLimits(n *net.IPNet) (lo net.IP, hi net.IP) {
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ones, bits := n.Mask.Size()
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netNum := n.IP
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if bits == net.IPv4len*8 {
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netNum = netNum.To16()
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ones += 8 * (net.IPv6len - net.IPv4len)
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}
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mask := net.CIDRMask(ones, 8*net.IPv6len)
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lo = make(net.IP, net.IPv6len)
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hi = make(net.IP, net.IPv6len)
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for i := 0; i < net.IPv6len; i++ {
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lo[i] = netNum[i] & mask[i]
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hi[i] = lo[i] | ^mask[i]
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}
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return lo, hi
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}
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func NewIPRangeSearcher(indexReader index.IndexReader, ipNet *net.IPNet,
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field string, boost float64, options search.SearcherOptions) (
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search.Searcher, error) {
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lo, hi := netLimits(ipNet)
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fieldDict, err := indexReader.FieldDictRange(field, lo, hi)
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if err != nil {
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return nil, err
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}
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defer fieldDict.Close()
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var terms []string
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tfd, err := fieldDict.Next()
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for err == nil && tfd != nil {
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terms = append(terms, tfd.Term)
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if tooManyClauses(len(terms)) {
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return nil, tooManyClausesErr(field, len(terms))
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}
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tfd, err = fieldDict.Next()
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}
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if err != nil {
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return nil, err
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}
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return NewMultiTermSearcher(indexReader, terms, field, boost, options, true)
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}
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