init: initial commit

internal/parser/word_parser.go

@@ -0,0 +1,83 @@
+package parser
+
+import (
+	"archive/zip"
+	"encoding/xml"
+	"fmt"
+	"io"
+)
+
+// WordParser extracts text from .docx files
+type WordParser struct{}
+
+// SupportedExtensions returns extensions this parser handles
+func (p *WordParser) SupportedExtensions() []string {
+	return []string{".docx"}
+}
+
+type wDocument struct {
+	Body wBody `xml:"body"`
+}
+
+type wBody struct {
+	P []wP `xml:"p"`
+}
+
+type wP struct {
+	R []wR `xml:"r"`
+}
+
+type wR struct {
+	T []string `xml:"t"`
+}
+
+// ParseToMarkdown extracts text from the word document and returns it as Markdown-like text
+func (p *WordParser) ParseToMarkdown(path string) (string, error) {
+	r, err := zip.OpenReader(path)
+	if err != nil {
+		return "", fmt.Errorf("failed to open docx as zip: %w", err)
+	}
+	defer r.Close()
+
+	var docFile *zip.File
+	for _, f := range r.File {
+		if f.Name == "word/document.xml" {
+			docFile = f
+			break
+		}
+	}
+	if docFile == nil {
+		return "", fmt.Errorf("invalid docx file: word/document.xml not found")
+	}
+
+	rc, err := docFile.Open()
+	if err != nil {
+		return "", err
+	}
+	defer rc.Close()
+
+	data, err := io.ReadAll(rc)
+	if err != nil {
+		return "", err
+	}
+
+	var doc wDocument
+	if err := xml.Unmarshal(data, &doc); err != nil {
+		return "", err
+	}
+
+	var md string
+	for _, paragraph := range doc.Body.P {
+		var pText string
+		for _, run := range paragraph.R {
+			for _, text := range run.T {
+				pText += text
+			}
+		}
+		if pText != "" {
+			md += pText + "\n\n"
+		}
+	}
+
+	return md, nil
+}