130 lines
4.2 KiB
Go
130 lines
4.2 KiB
Go
/*
|
|
* Copyright 2025 coze-dev Authors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package parser
|
|
|
|
import (
|
|
"github.com/coze-dev/coze-studio/backend/infra/contract/document"
|
|
"github.com/coze-dev/coze-studio/backend/pkg/lang/sets"
|
|
)
|
|
|
|
type Manager interface {
|
|
GetParser(config *Config) (Parser, error)
|
|
IsAutoAnnotationSupported() bool
|
|
}
|
|
|
|
type Config struct {
|
|
FileExtension FileExtension
|
|
ParsingStrategy *ParsingStrategy
|
|
ChunkingStrategy *ChunkingStrategy
|
|
}
|
|
|
|
// ParsingStrategy for document parse before indexing
|
|
type ParsingStrategy struct {
|
|
// Doc
|
|
ExtractImage bool `json:"extract_image"` // Extract image elements
|
|
ExtractTable bool `json:"extract_table"` // Extract table elements
|
|
ImageOCR bool `json:"image_ocr"` // Image ocr
|
|
FilterPages []int `json:"filter_pages"` // Page filter, first page = 1
|
|
|
|
// Sheet
|
|
SheetID *int `json:"sheet_id"` // xlsx sheet id
|
|
HeaderLine int `json:"header_line"` // header row
|
|
DataStartLine int `json:"data_start_line"` // Data start row
|
|
RowsCount int `json:"rows_count"` // number of rows read
|
|
IsAppend bool `json:"-"` // row insertion
|
|
Columns []*document.Column `json:"-"` // Sheet Alignment Header
|
|
IgnoreColumnTypeErr bool `json:"-"` // Ignore the problem that the column type and value are not aligned when true, when the value is empty
|
|
|
|
// Image
|
|
ImageAnnotationType ImageAnnotationType `json:"image_annotation_type"` // Image content labeling type
|
|
}
|
|
|
|
type ChunkingStrategy struct {
|
|
ChunkType ChunkType `json:"chunk_type"`
|
|
|
|
// custom config
|
|
ChunkSize int64 `json:"chunk_size"` // maximum segmentation length
|
|
Separator string `json:"separator"` // segmentation identifier
|
|
Overlap int64 `json:"overlap"` // segmented overlap ratio
|
|
TrimSpace bool `json:"trim_space"`
|
|
TrimURLAndEmail bool `json:"trim_url_and_email"`
|
|
|
|
// leveled config
|
|
MaxDepth int64 `json:"max_depth"` // Maximum level when segmented by level
|
|
SaveTitle bool `json:"save_title"` // Preserve Hierarchical Titles
|
|
}
|
|
|
|
type ChunkType int64
|
|
|
|
const (
|
|
ChunkTypeDefault ChunkType = 0 // Automatic sharding
|
|
ChunkTypeCustom ChunkType = 1 // Custom rule sharding
|
|
ChunkTypeLeveled ChunkType = 2 // Hierarchical sharding
|
|
)
|
|
|
|
type ImageAnnotationType int64
|
|
|
|
const (
|
|
ImageAnnotationTypeModel ImageAnnotationType = 0 // automatic model annotation
|
|
ImageAnnotationTypeManual ImageAnnotationType = 1 // manual annotation
|
|
)
|
|
|
|
type FileExtension string
|
|
|
|
const (
|
|
// document
|
|
FileExtensionPDF FileExtension = "pdf"
|
|
FileExtensionTXT FileExtension = "txt"
|
|
FileExtensionDoc FileExtension = "doc"
|
|
FileExtensionDocx FileExtension = "docx"
|
|
FileExtensionMarkdown FileExtension = "md"
|
|
|
|
// sheet
|
|
FileExtensionCSV FileExtension = "csv"
|
|
FileExtensionXLSX FileExtension = "xlsx"
|
|
FileExtensionJSON FileExtension = "json"
|
|
FileExtensionJsonMaps FileExtension = "json_maps" // json of []map[string]string
|
|
|
|
// image
|
|
FileExtensionJPG FileExtension = "jpg"
|
|
FileExtensionJPEG FileExtension = "jpeg"
|
|
FileExtensionPNG FileExtension = "png"
|
|
)
|
|
|
|
func ValidateFileExtension(fileSuffix string) (ext FileExtension, support bool) {
|
|
fileExtension := FileExtension(fileSuffix)
|
|
_, ok := fileExtensionSet[fileExtension]
|
|
if !ok {
|
|
return "", false
|
|
}
|
|
return fileExtension, true
|
|
}
|
|
|
|
var fileExtensionSet = sets.Set[FileExtension]{
|
|
FileExtensionPDF: {},
|
|
FileExtensionTXT: {},
|
|
FileExtensionDoc: {},
|
|
FileExtensionDocx: {},
|
|
FileExtensionMarkdown: {},
|
|
FileExtensionCSV: {},
|
|
FileExtensionJSON: {},
|
|
FileExtensionJsonMaps: {},
|
|
FileExtensionJPG: {},
|
|
FileExtensionJPEG: {},
|
|
FileExtensionPNG: {},
|
|
}
|