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feat: add loader, parser examples (#10)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| /* | ||
| * Copyright 2025 CloudWeGo 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 main | ||
|
|
||
| import ( | ||
| "context" | ||
| "io" | ||
|
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| "github.com/cloudwego/eino/components/document/parser" | ||
| "github.com/cloudwego/eino/schema" | ||
| ) | ||
|
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| // options | ||
| // 定制实现自主定义的 option 结构体 | ||
| type options struct { | ||
| Encoding string | ||
| MaxSize int64 | ||
| } | ||
|
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| // WithEncoding | ||
| // 定制实现自主定义的 Option 方法 | ||
| func WithEncoding(encoding string) parser.Option { | ||
| return parser.WrapImplSpecificOptFn(func(o *options) { | ||
| o.Encoding = encoding | ||
| }) | ||
| } | ||
|
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| func WithMaxSize(size int64) parser.Option { | ||
| return parser.WrapImplSpecificOptFn(func(o *options) { | ||
| o.MaxSize = size | ||
| }) | ||
| } | ||
|
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| type Config struct { | ||
| DefaultEncoding string | ||
| DefaultMaxSize int64 | ||
| } | ||
|
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| type CustomParser struct { | ||
| defaultEncoding string | ||
| defaultMaxSize int64 | ||
| } | ||
|
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| func NewCustomParser(config *Config) (*CustomParser, error) { | ||
| return &CustomParser{ | ||
| defaultEncoding: config.DefaultEncoding, | ||
| defaultMaxSize: config.DefaultMaxSize, | ||
| }, nil | ||
| } | ||
|
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| func (p *CustomParser) Parse(ctx context.Context, reader io.Reader, opts ...parser.Option) ([]*schema.Document, error) { | ||
| // 1. 处理通用选项 | ||
| commonOpts := parser.GetCommonOptions(&parser.Options{}, opts...) | ||
| _ = commonOpts | ||
|
|
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| // 2. 处理特定选项 | ||
| myOpts := &options{ | ||
| Encoding: p.defaultEncoding, | ||
| MaxSize: p.defaultMaxSize, | ||
| } | ||
| myOpts = parser.GetImplSpecificOptions(myOpts, opts...) | ||
| _ = myOpts | ||
| // 3. 实现解析逻辑 | ||
|
|
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| return []*schema.Document{{ | ||
| Content: "Hello World", | ||
| }}, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright 2024 CloudWeGo 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 main | ||
|
|
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| import ( | ||
| "context" | ||
|
|
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| "github.com/cloudwego/eino-examples/internal/logs" | ||
| ) | ||
|
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| func main() { | ||
| ctx := context.Background() | ||
|
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| customParser, err := NewCustomParser(&Config{ | ||
| DefaultEncoding: "default", | ||
| DefaultMaxSize: 1024, | ||
| }) | ||
| if err != nil { | ||
| logs.Errorf("NewCustomParser failed, err=%v", err) | ||
| return | ||
| } | ||
|
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| docs, err := customParser.Parse(ctx, nil, | ||
| WithMaxSize(2048), | ||
| ) | ||
| if err != nil { | ||
| logs.Errorf("customParser.Parse, err=%v", err) | ||
| return | ||
| } | ||
|
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| for idx, doc := range docs { | ||
| logs.Infof("doc_%v content: %v", idx, doc.Content) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /* | ||
| * Copyright 2024 CloudWeGo 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 main | ||
|
|
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| import ( | ||
| "context" | ||
| "os" | ||
|
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| "github.com/cloudwego/eino-ext/components/document/parser/html" | ||
| "github.com/cloudwego/eino-ext/components/document/parser/pdf" | ||
| "github.com/cloudwego/eino/components/document/parser" | ||
|
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| "github.com/cloudwego/eino-examples/internal/gptr" | ||
| "github.com/cloudwego/eino-examples/internal/logs" | ||
| ) | ||
|
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| func main() { | ||
| ctx := context.Background() | ||
|
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| textParser := parser.TextParser{} | ||
|
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| htmlParser, err := html.NewParser(ctx, &html.Config{ | ||
| Selector: gptr.Of("body"), | ||
| }) | ||
| if err != nil { | ||
| logs.Errorf("html.NewParser failed, err=%v", err) | ||
| return | ||
| } | ||
|
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| pdfParser, err := pdf.NewPDFParser(ctx, &pdf.Config{}) | ||
| if err != nil { | ||
| logs.Errorf("pdf.NewPDFParser failed, err=%v", err) | ||
| return | ||
| } | ||
|
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| // 创建扩展解析器 | ||
| extParser, err := parser.NewExtParser(ctx, &parser.ExtParserConfig{ | ||
| // 注册特定扩展名的解析器 | ||
| Parsers: map[string]parser.Parser{ | ||
| ".html": htmlParser, | ||
| ".pdf": pdfParser, | ||
| }, | ||
| // 设置默认解析器，用于处理未知格式 | ||
| FallbackParser: textParser, | ||
| }) | ||
| if err != nil { | ||
|
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| return | ||
| } | ||
|
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| // 使用解析器 | ||
| filePath := "./testdata/test.html" | ||
| file, err := os.Open(filePath) | ||
| if err != nil { | ||
| logs.Errorf("os.Open failed, file=%v, err=%v", filePath, err) | ||
| return | ||
| } | ||
| docs, err := extParser.Parse(ctx, file, | ||
| // 必须提供 URI ExtParser 选择正确的解析器进行解析 | ||
| parser.WithURI(filePath), | ||
| parser.WithExtraMeta(map[string]any{ | ||
| "source": "local", | ||
| }), | ||
| ) | ||
| if err != nil { | ||
| logs.Errorf("extParser.Parse, err=%v", err) | ||
| return | ||
| } | ||
|
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| for idx, doc := range docs { | ||
| logs.Infof("doc_%v content: %v", idx, doc.Content) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| <!DOCTYPE html> | ||
| <!-- saved from url=(0064)http://10.37.87.106:1313/zh/docs/eino/overview/eino_open_source/ --> | ||
| <html lang="zh" class="no-js"> | ||
| <head> | ||
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> | ||
| <title>大语言模型应用开发框架 —— Eino 正式开源！ | CloudWeGo</title> | ||
| </head> | ||
| <body> | ||
| Hello World For Eino | ||
| </body> | ||
| </html> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,39 @@ | ||
| /* | ||
| * Copyright 2024 CloudWeGo 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 main | ||
|
|
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| import ( | ||
| "context" | ||
| "strings" | ||
|
|
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| "github.com/cloudwego/eino/components/document/parser" | ||
|
|
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| "github.com/cloudwego/eino-examples/internal/logs" | ||
| ) | ||
|
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| func main() { | ||
| ctx := context.Background() | ||
|
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| textParser := parser.TextParser{} | ||
| docs, err := textParser.Parse(ctx, strings.NewReader("hello world")) | ||
| if err != nil { | ||
| logs.Errorf("TextParser{}.Parse failed, err=%v", err) | ||
| return | ||
| } | ||
|
|
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| logs.Infof("text content: %v", docs[0].Content) | ||
| } |
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