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75 lines
1.8 KiB
Go
75 lines
1.8 KiB
Go
package main
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import (
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. "github.com/antonmedv/fx/internal/jsonx"
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)
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type search struct {
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err error
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results []*Node
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cursor int
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values map[*Node][]match
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keys map[*Node][]match
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}
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func newSearch() *search {
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return &search{
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results: make([]*Node, 0),
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values: make(map[*Node][]match),
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keys: make(map[*Node][]match),
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}
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}
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type match struct {
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start, end int
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index int
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}
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type piece struct {
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b []byte
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index int
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}
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func splitBytesByIndexes(b []byte, indexes []match) []piece {
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out := make([]piece, 0, 1)
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pos := 0
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for _, pair := range indexes {
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out = append(out, piece{safeSlice(b, pos, pair.start), -1})
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out = append(out, piece{safeSlice(b, pair.start, pair.end), pair.index})
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pos = pair.end
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}
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out = append(out, piece{safeSlice(b, pos, len(b)), -1})
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return out
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}
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func splitIndexesToChunks(chunks [][]byte, indexes [][]int, searchIndex int) (chunkIndexes [][]match) {
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chunkIndexes = make([][]match, len(chunks))
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for index, idx := range indexes {
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position := 0
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for i, chunk := range chunks {
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// If start index lies in this chunk
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if idx[0] < position+len(chunk) {
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// Calculate local start and end for this chunk
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localStart := idx[0] - position
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localEnd := idx[1] - position
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// If the end index also lies in this chunk
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if idx[1] <= position+len(chunk) {
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chunkIndexes[i] = append(chunkIndexes[i], match{start: localStart, end: localEnd, index: searchIndex + index})
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break
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} else {
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// If the end index is outside this chunk, split the index
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chunkIndexes[i] = append(chunkIndexes[i], match{start: localStart, end: len(chunk), index: searchIndex + index})
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// Adjust the starting index for the next chunk
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idx[0] = position + len(chunk)
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}
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}
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position += len(chunk)
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}
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}
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return
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}
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