Initial reading and writing of CSV

.gitignore

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+*.json
+*.txt
+*.xml
+kanji-merge*

go.mod

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+module git.foosoft.net/alex/rtk-merge
+
+go 1.21.8

main.go

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+package main
+
+import (
+	"encoding/csv"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+)
+
+type (
+	StoryEntry struct {
+		Author        string `json:"author"`
+		Content       string `json:"content"`
+		ModifiedDate  string `json:"modifiedDate"`
+		StarredCount  int    `json:"starredCount"`
+		ReportedCount int    `json:"reportedCount"`
+	}
+
+	KanjiEntry struct {
+		Character   string       `json:"character"`
+		Reading     string       `json:"reading"`
+		FrameNumber int          `json:"frameNumber"`
+		StrokeCount int          `json:"strokeCount"`
+		Story       string       `json:"story"`
+		Stories     []StoryEntry `json:"stories"`
+	}
+
+	TableRow = []string
+	Table    = []TableRow
+)
+
+func injectStories(table Table, path string) error {
+	return nil
+}
+
+func injectKanjidic(table Table, path string) error {
+	return nil
+}
+
+func loadTable(path string) (Table, error) {
+	fp, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer fp.Close()
+
+	reader := csv.NewReader(fp)
+	reader.Comment = '#'
+	reader.Comma = '\t'
+
+	table, err := reader.ReadAll()
+	if err != nil {
+		return nil, err
+	}
+
+	for i := range table {
+		table[i] = table[i][:3]
+	}
+
+	return table, nil
+}
+
+func saveTable(path string, table Table) error {
+	fp, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer fp.Close()
+
+	writer := csv.NewWriter(fp)
+	if err := writer.WriteAll(table); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func main() {
+	var (
+		storiesPath  = flag.String("stories", "", "path for stories JSON")
+		kanjidicPath = flag.String("kanjidic", "", "path for KANJIDIC")
+	)
+
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, "Usage: %s [options] <notes_in.txt> <notes_out.txt>\n", filepath.Base(os.Args[0]))
+		fmt.Fprintln(os.Stderr, "Options:")
+		flag.PrintDefaults()
+	}
+
+	flag.Parse()
+
+	args := flag.Args()
+	if len(args) != 2 {
+		flag.Usage()
+		os.Exit(2)
+	}
+
+	table, err := loadTable(os.Args[1])
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if len(*storiesPath) > 0 {
+		if err := injectStories(table, *storiesPath); err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	if len(*kanjidicPath) > 0 {
+		if err := injectKanjidic(table, *kanjidicPath); err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	if err := saveTable(os.Args[2], table); err != nil {
+		log.Fatal(err)
+	}
+}