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328 lines
12 KiB
328 lines
12 KiB
1 year ago
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/* ——————————————————————————————————————————————————————————————————————————
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Proyecto fontToB64
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—————————————————————————————————————————————————————————————————————————————
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Fichero main.go
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Package fontToB64
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Autor Juan V. Navarro juanvnl@activething.com
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Creado 12/10/2025
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—————————————————————————————————————————————————————————————————————————————
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LICENSES AND TERMS OF USE
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-------------------------
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This software is licensed under the Elastic License v2.0 (the "License").
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For full terms and additional information regarding permitted and prohibited
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uses, please visit:
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https://activething.com/wiawiaw/licenses
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You may use, copy, modify, and redistribute this software internally within
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your organization for any purpose, including research, development, and
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testing, subject to the terms of this License.
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You may NOT, however, use, provide, distribute, or make this software
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available to any third party as part of a hosted service, SaaS offering, or
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commercial product without first obtaining a commercial license from
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Active Thing.
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You may combine this software with other code, provided that such
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combination does not circumvent the restrictions of this License.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT. In no event shall
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the authors or copyright holders be liable for any claim, damages, or other
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liability arising from the use of this software.
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—————————————————————————————————————————————————————————————————————————————
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Web : activething.com | wiawiaw.com
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git : g.activething.com | github.com/activething
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Correo : dev@activething.com
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—————————————————————————————————————————————————————————————————————————————
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No deseo caminar sobre el agua", dijo Siddhartha.
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Que los antiguos chamanes se contenten con tales habilidades.
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—— Hermann Hesse, Siddhartha
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—————————————————————————————————————————————————————————————————————————————
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Copyright (c) 2025 Active Thing
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————————————————————————————————————————————————————————————————————————————— */
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package main
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import (
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"encoding/base64"
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"flag"
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"fmt"
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"os"
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"path/filepath"
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"strconv"
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"strings"
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)
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// Config contiene los parámetros de la línea de comandos
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type Config struct {
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dir string
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outputName string
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varName string
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}
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// FontData representa la estructura de un objeto de fuente en TypeScript
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type FontData struct {
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Name string `json:"name"`
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Format string `json:"format"`
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Filename string `json:"filename"`
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Base64 string `json:"base64"`
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Weight int `json:"weight"`
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Style string `json:"style"`
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}
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func main() {
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cfg := parseFlags()
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// Verificar que el directorio existe
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if _, err := os.Stat(cfg.dir); os.IsNotExist(err) {
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fmt.Printf("Error: El directorio '%s' no existe\n", cfg.dir)
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os.Exit(1)
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}
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// Leer archivos del directorio
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entries, err := os.ReadDir(cfg.dir)
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if err != nil {
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fmt.Printf("Error al leer el directorio: %v\n", err)
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os.Exit(1)
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}
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var fontCollection []FontData
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processed := 0
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fmt.Println("🔎 Buscando fuentes en el directorio...")
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for _, entry := range entries {
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if entry.IsDir() {
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continue
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}
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// Procesar solo archivos de fuentes soportados
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if isSupportedFont(entry.Name()) {
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inputPath := filepath.Join(cfg.dir, entry.Name())
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fmt.Printf("Procesando: %s\n", entry.Name())
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fontData, err := processFontFile(inputPath)
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if err != nil {
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fmt.Printf(" Error: %v\n", err)
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continue
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}
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fontCollection = append(fontCollection, fontData)
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fmt.Printf(" ✓ Añadido: %s (Weight: %d, Style: %s)\n", fontData.Name, fontData.Weight, fontData.Style)
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processed++
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}
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}
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if processed == 0 {
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fmt.Println("\nNo se encontraron fuentes soportadas (.ttf, .otf, .woff, .woff2)")
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return
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}
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// Generar el archivo TypeScript
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if err := generateTsFile(fontCollection, cfg); err != nil {
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fmt.Printf("\nError al generar el archivo TypeScript: %v\n", err)
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os.Exit(1)
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}
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fmt.Printf("\n✅ %d fuentes procesadas correctamente\n", processed)
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}
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func parseFlags() Config {
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cfg := Config{}
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flag.StringVar(&cfg.dir, "dir", "", "Directorio con las fuentes (requerido)")
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flag.StringVar(&cfg.outputName, "output", "", "Nombre del archivo de salida (sin extensión)")
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flag.StringVar(&cfg.varName, "varname", "projectFonts", "Nombre para la variable exportada en TypeScript")
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flag.Usage = func() {
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fmt.Fprintf(os.Stderr, "\n╔════════════════════════════════════════════════════════════════════╗\n")
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fmt.Fprintf(os.Stderr, "║ Procesador de Fuentes a Base64 para TypeScript ║\n")
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fmt.Fprintf(os.Stderr, "╚════════════════════════════════════════════════════════════════════╝\n\n")
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fmt.Fprintf(os.Stderr, "DESCRIPCIÓN:\n")
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fmt.Fprintf(os.Stderr, " Convierte archivos de fuentes a Base64 y los agrupa en un único\n")
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fmt.Fprintf(os.Stderr, " archivo TypeScript como un array de objetos, ideal para CSS-in-JS.\n\n")
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fmt.Fprintf(os.Stderr, "USO:\n")
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fmt.Fprintf(os.Stderr, " %s -dir <directorio> [opciones]\n\n", os.Args[0])
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fmt.Fprintf(os.Stderr, "PARÁMETROS:\n")
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flag.PrintDefaults()
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fmt.Fprintf(os.Stderr, "\nEJEMPLOS:\n")
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fmt.Fprintf(os.Stderr, " # Uso básico (genera 'fuentes.fonts.ts' con la variable 'projectFonts')\n")
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fmt.Fprintf(os.Stderr, " %s -dir ./mis-fuentes\n\n", os.Args[0])
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fmt.Fprintf(os.Stderr, " # Especificando nombre de archivo y variable\n")
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fmt.Fprintf(os.Stderr, " %s -dir ./mis-fuentes -output AppFonts -varname allFonts\n\n", os.Args[0])
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}
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flag.Parse()
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if cfg.dir == "" {
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flag.Usage()
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os.Exit(1)
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}
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if cfg.outputName == "" {
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cfg.outputName = filepath.Base(cfg.dir)
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}
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return cfg
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}
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// processFontFile lee una fuente, la convierte y extrae sus metadatos.
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func processFontFile(inputPath string) (FontData, error) {
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fileBytes, err := os.ReadFile(inputPath)
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if err != nil {
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return FontData{}, fmt.Errorf("error al leer el archivo: %w", err)
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}
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base64Str := base64.StdEncoding.EncodeToString(fileBytes)
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filename := filepath.Base(inputPath)
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ext := strings.ToLower(filepath.Ext(filename))
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fontFormat, mimeType := getFontFormat(ext)
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// Analizar nombre de archivo para extraer metadatos
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name, weight, style := parseFontFilename(filename)
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return FontData{
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Name: name,
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Format: fontFormat,
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Filename: filename,
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Base64: fmt.Sprintf("data:%s;base64,%s", mimeType, base64Str),
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Weight: weight,
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Style: style,
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}, nil
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}
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// generateTsFile crea el archivo .ts final con la colección de fuentes.
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func generateTsFile(fonts []FontData, cfg Config) error {
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outputPath := filepath.Join(cfg.dir, cfg.outputName+".fonts.ts")
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var content strings.Builder
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content.WriteString("/**\n * Este archivo ha sido generado automáticamente.\n")
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content.WriteString(" * Contiene las fuentes del proyecto en formato Base64.\n */\n\n")
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// Escribir la interfaz para tipado
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content.WriteString("export interface Font {\n")
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content.WriteString(" name: string;\n")
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content.WriteString(" format: string;\n")
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content.WriteString(" filename: string;\n")
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content.WriteString(" base64: string;\n")
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content.WriteString(" weight: number;\n")
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content.WriteString(" style: 'normal' | 'italic' | 'oblique';\n")
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content.WriteString("}\n\n")
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// Iniciar el array
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content.WriteString(fmt.Sprintf("export const %s: Font[] = [\n", cfg.varName))
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for _, font := range fonts {
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content.WriteString(" {\n")
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content.WriteString(fmt.Sprintf(" name: \"%s\",\n", font.Name))
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content.WriteString(fmt.Sprintf(" format: \"%s\",\n", font.Format))
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content.WriteString(fmt.Sprintf(" filename: \"%s\",\n", font.Filename))
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content.WriteString(fmt.Sprintf(" base64: \"%s\",\n", font.Base64))
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content.WriteString(fmt.Sprintf(" weight: %d,\n", font.Weight))
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content.WriteString(fmt.Sprintf(" style: \"%s\",\n", font.Style))
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content.WriteString(" },\n")
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}
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content.WriteString("];\n")
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err := os.WriteFile(outputPath, []byte(content.String()), 0644)
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if err != nil {
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return err
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}
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fmt.Printf("\n🎉 Archivo TypeScript generado: %s\n", filepath.Base(outputPath))
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return nil
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}
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// --- Funciones de Ayuda ---
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func isSupportedFont(filename string) bool {
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ext := strings.ToLower(filepath.Ext(filename))
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switch ext {
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case ".ttf", ".otf", ".woff", ".woff2":
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return true
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default:
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return false
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}
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}
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func getFontFormat(ext string) (format string, mimeType string) {
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switch ext {
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case ".ttf":
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return "truetype", "font/ttf"
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case ".otf":
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return "opentype", "font/otf"
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case ".woff":
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return "woff", "font/woff"
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case ".woff2":
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return "woff2", "font/woff2"
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default:
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return "unknown", "application/octet-stream"
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}
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}
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// parseFontFilename intenta deducir el nombre, peso y estilo de la fuente desde el nombre del archivo.
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// Es una heurística y puede necesitar ajustes según la convención de nombres.
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func parseFontFilename(filename string) (name string, weight int, style string) {
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// Valores por defecto
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weight = 400 // normal
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style = "normal"
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// Quitar la extensión
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cleanName := strings.TrimSuffix(filename, filepath.Ext(filename))
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// Mapeo de pesos y estilos
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styleMap := map[string]string{
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"Italic": "italic",
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"Oblique": "oblique",
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}
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weightMap := map[string]int{
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"Thin": 100,
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"ExtraLight": 200,
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"Light": 300,
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"Regular": 400,
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"Medium": 500,
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"SemiBold": 600,
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"Bold": 700,
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"ExtraBold": 800,
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"Black": 900,
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"Heavy": 900,
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}
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// Buscar y reemplazar para extraer metadatos
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for key, val := range styleMap {
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if strings.Contains(cleanName, key) {
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style = val
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cleanName = strings.ReplaceAll(cleanName, key, "")
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}
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}
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for key, val := range weightMap {
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if strings.Contains(cleanName, key) {
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weight = val
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cleanName = strings.ReplaceAll(cleanName, key, "")
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}
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}
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// Probar si el peso es numérico (e.g., "Font-700.ttf")
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parts := strings.Split(cleanName, "-")
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lastPart := parts[len(parts)-1]
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if w, err := strconv.Atoi(lastPart); err == nil && w >= 100 && w <= 900 {
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weight = w
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cleanName = strings.Join(parts[:len(parts)-1], "-")
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}
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// Limpiar el nombre resultante
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cleanName = strings.ReplaceAll(cleanName, "-", " ")
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cleanName = strings.ReplaceAll(cleanName, "_", " ")
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// Expresión regular para quitar espacios duplicados
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cleanName = strings.Join(strings.Fields(cleanName), " ")
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return cleanName, weight, style
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}
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