129 lines
4.1 KiB
Go
129 lines
4.1 KiB
Go
/*
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* Copyright 2025 coze-dev Authors
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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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*/
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package parser
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import (
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"github.com/coze-dev/coze-studio/backend/infra/contract/document"
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"github.com/coze-dev/coze-studio/backend/pkg/lang/sets"
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)
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type Manager interface {
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GetParser(config *Config) (Parser, error)
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}
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type Config struct {
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FileExtension FileExtension
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ParsingStrategy *ParsingStrategy
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ChunkingStrategy *ChunkingStrategy
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}
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// ParsingStrategy for document parse before indexing
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type ParsingStrategy struct {
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// Doc
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ExtractImage bool `json:"extract_image"` // 提取图片元素
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ExtractTable bool `json:"extract_table"` // 提取表格元素
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ImageOCR bool `json:"image_ocr"` // 图片 ocr
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FilterPages []int `json:"filter_pages"` // 页过滤, 第一页=1
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// Sheet
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SheetID *int `json:"sheet_id"` // xlsx sheet id
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HeaderLine int `json:"header_line"` // 表头行
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DataStartLine int `json:"data_start_line"` // 数据起始行
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RowsCount int `json:"rows_count"` // 读取数据行数
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IsAppend bool `json:"-"` // 行插入
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Columns []*document.Column `json:"-"` // sheet 对齐表头
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IgnoreColumnTypeErr bool `json:"-"` // true 时忽略 column type 与 value 未对齐的问题，此时 value 为空
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// Image
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ImageAnnotationType ImageAnnotationType `json:"image_annotation_type"` // 图片内容标注类型
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}
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type ChunkingStrategy struct {
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ChunkType ChunkType `json:"chunk_type"`
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// custom config
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ChunkSize int64 `json:"chunk_size"` // 分段最大长度
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Separator string `json:"separator"` // 分段标识符
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Overlap int64 `json:"overlap"` // 分段重叠比例
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TrimSpace bool `json:"trim_space"`
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TrimURLAndEmail bool `json:"trim_url_and_email"`
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// leveled config
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MaxDepth int64 `json:"max_depth"` // 按层级分段时的最大层级
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SaveTitle bool `json:"save_title"` // 保留层级标题
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}
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type ChunkType int64
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const (
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ChunkTypeDefault ChunkType = 0 // 自动分片
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ChunkTypeCustom ChunkType = 1 // 自定义规则分片
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ChunkTypeLeveled ChunkType = 2 // 层级分片
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)
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type ImageAnnotationType int64
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const (
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ImageAnnotationTypeModel ImageAnnotationType = 0 // 模型自动标注
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ImageAnnotationTypeManual ImageAnnotationType = 1 // 人工标注
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)
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type FileExtension string
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const (
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// document
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FileExtensionPDF FileExtension = "pdf"
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FileExtensionTXT FileExtension = "txt"
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FileExtensionDoc FileExtension = "doc"
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FileExtensionDocx FileExtension = "docx"
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FileExtensionMarkdown FileExtension = "md"
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// sheet
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FileExtensionCSV FileExtension = "csv"
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FileExtensionXLSX FileExtension = "xlsx"
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FileExtensionJSON FileExtension = "json"
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FileExtensionJsonMaps FileExtension = "json_maps" // json of []map[string]string
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// image
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FileExtensionJPG FileExtension = "jpg"
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FileExtensionJPEG FileExtension = "jpeg"
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FileExtensionPNG FileExtension = "png"
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)
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func ValidateFileExtension(fileSuffix string) (ext FileExtension, support bool) {
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fileExtension := FileExtension(fileSuffix)
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_, ok := fileExtensionSet[fileExtension]
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if !ok {
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return "", false
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}
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return fileExtension, true
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}
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var fileExtensionSet = sets.Set[FileExtension]{
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FileExtensionPDF: {},
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FileExtensionTXT: {},
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FileExtensionDoc: {},
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FileExtensionDocx: {},
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FileExtensionMarkdown: {},
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FileExtensionCSV: {},
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FileExtensionJSON: {},
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FileExtensionJsonMaps: {},
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FileExtensionJPG: {},
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FileExtensionJPEG: {},
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FileExtensionPNG: {},
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}
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