78 lines
1.7 KiB
Go
78 lines
1.7 KiB
Go
package service
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import (
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"archive/zip"
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"bytes"
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"encoding/xml"
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"fmt"
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"io"
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"path/filepath"
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"strings"
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"github.com/ledongthuc/pdf"
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)
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func extractCVText(filename string, content []byte) (text string, err error) {
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if len(content) == 0 {
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return "", nil
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}
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switch strings.ToLower(filepath.Ext(filename)) {
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case ".pdf":
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defer func() {
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if recovered := recover(); recovered != nil {
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text = ""
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err = fmt.Errorf("unreadable PDF")
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}
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}()
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reader, err := pdf.NewReader(bytes.NewReader(content), int64(len(content)))
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if err != nil {
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return "", fmt.Errorf("read PDF: %w", err)
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}
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plainText, err := reader.GetPlainText()
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if err != nil {
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return "", fmt.Errorf("extract PDF text: %w", err)
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}
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value, err := io.ReadAll(plainText)
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if err != nil {
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return "", fmt.Errorf("read PDF text: %w", err)
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}
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return string(value), nil
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case ".docx":
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return extractDOCX(content)
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default:
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return string(content), nil
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}
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}
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func extractDOCX(content []byte) (string, error) {
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archive, err := zip.NewReader(bytes.NewReader(content), int64(len(content)))
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if err != nil {
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return "", fmt.Errorf("open DOCX: %w", err)
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}
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for _, file := range archive.File {
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if file.Name != "word/document.xml" {
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continue
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}
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stream, err := file.Open()
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if err != nil {
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return "", fmt.Errorf("open DOCX document: %w", err)
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}
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defer stream.Close()
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decoder := xml.NewDecoder(stream)
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var text strings.Builder
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for {
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token, err := decoder.Token()
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if err == io.EOF {
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return text.String(), nil
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}
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if err != nil {
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return "", fmt.Errorf("parse DOCX document: %w", err)
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}
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if chars, ok := token.(xml.CharData); ok {
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text.Write(chars)
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text.WriteByte(' ')
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}
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}
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}
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return "", fmt.Errorf("DOCX document body is missing")
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}
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