add line number support and support for text files

cmd/config.go

@@ -17,7 +17,17 @@ import (
 
 const (
 	Version string = `v0.0.2`
-	Usage   string = `epuppy [-vd] <epub file>`
+	Usage   string = `Usage epuppy [options] <epub file>
+
+Options:
+-D --dark                enable dark mode
+-s --store-progress      store and use previous (experimental)
+-n --line-numbers        add line numbers
+-c --config <file>       use config <file>
+-d --debug               enable debugging
+-h --help                show help message
+-v --version             show program version
+`
 )
 
 type Config struct {
@@ -25,6 +35,7 @@ type Config struct {
 	Debug         bool         `koanf:"debug"`          // -d
 	StoreProgress bool         `koanf:"store-progress"` // -s
 	Darkmode      bool         `koanf:"dark"`           // -D
+	LineNumbers   bool         `koanf:"line-numbers"`   // -n
 	Config        string       `koanf:"config"`         // -c
 	ColorDark     ColorSetting `koanf:"colordark"`      // comes from config file only
 	ColorLight    ColorSetting `koanf:"colorlight"`     // comes from config file only
@@ -52,6 +63,7 @@ func InitConfig(output io.Writer) (*Config, error) {
 	flagset.BoolP("debug", "d", false, "enable debugging")
 	flagset.BoolP("dark", "D", false, "enable dark mode")
 	flagset.BoolP("store-progress", "s", false, "store reading progress")
+	flagset.BoolP("line-numbers", "n", false, "add line numbers")
 	flagset.StringP("config", "c", "", "read config from file")
 
 	if err := flagset.Parse(os.Args[1:]); err != nil {

cmd/pager.go

@@ -189,7 +189,7 @@ func (m Doc) View() string {
 
 	// update current line for later saving
 	// FIXME: doesn't work correctly yet
-	m.meta.currentline = int(float64(m.meta.lines) * m.viewport.ScrollPercent())
+	m.meta.currentline = int(float64(m.viewport.TotalLineCount()) * m.viewport.ScrollPercent())
 
 	var helpView string
 	if m.help.ShowAll {
@@ -234,13 +234,28 @@ func Pager(conf *Config, title, message string) (int, error) {
 		scrollto = conf.InitialProgress
 	}
 
+	if conf.LineNumbers {
+		catn := ""
+		for idx, line := range strings.Split(message, "\n") {
+			catn += fmt.Sprintf("%d: %s\n", idx, line)
+		}
+		message = catn
+	}
+
 	meta := Meta{
 		initialprogress: scrollto,
-		lines:           len(strings.Split(message, "\r\n")),
+		lines:           len(strings.Split(message, "\n")),
 	}
 
 	p := tea.NewProgram(
-		Doc{content: message, title: title, initialwidth: width, meta: &meta, config: conf, keys: keys},
+		Doc{
+			content:      message,
+			title:        title,
+			initialwidth: width,
+			meta:         &meta,
+			config:       conf,
+			keys:         keys,
+		},
 		tea.WithAltScreen(),       // use the full size of the terminal in its "alternate screen buffer"
 		tea.WithMouseCellMotion(), // turn on mouse support so we can track the mouse wheel
 	)

cmd/view.go

@@ -2,12 +2,32 @@ package cmd
 
 import (
 	"fmt"
+	"os"
+	"path/filepath"
 	"strings"
 
 	"github.com/tlinden/epuppy/pkg/epub"
 )
 
 func View(conf *Config) (int, error) {
+	switch filepath.Ext(conf.Document) {
+	case ".epub":
+		return ViewEpub(conf)
+	default:
+		return ViewText(conf)
+	}
+}
+
+func ViewText(conf *Config) (int, error) {
+	data, err := os.ReadFile(conf.Document)
+	if err != nil {
+		return 0, err
+	}
+
+	return Pager(conf, conf.Document, string(data))
+}
+
+func ViewEpub(conf *Config) (int, error) {
 	book, err := epub.Open(conf.Document)
 	if err != nil {
 		return 0, err
@@ -35,8 +55,11 @@ func View(conf *Config) (int, error) {
 
 	for _, content := range book.Content {
 		if len(content.Body) > 0 {
-			buf.WriteString(conf.Colors.Chapter.
-				Render(fmt.Sprintf("Chapter %d: %s", chapter, content.Title)))
+			if content.Title != "" {
+				buf.WriteString(conf.Colors.Chapter.
+					Render(fmt.Sprintf("──────┤ %s ├──────", content.Title)))
+
+			}
 			buf.WriteString("\r\n\r\n")
 			buf.WriteString(conf.Colors.Body.Render(content.Body))
 			buf.WriteString("\r\n\r\n\r\n\r\n")

pkg/epub/content.go

@@ -3,9 +3,19 @@ package epub
 import (
 	"encoding/xml"
 	"fmt"
+	"regexp"
 	"strings"
 )
 
+var (
+	cleantitle    = regexp.MustCompile(`(?s)<head>.*</head>`)
+	cleanmarkup   = regexp.MustCompile(`<[^<>]+>`)
+	cleanentities = regexp.MustCompile(`&.+;`)
+	cleancomments = regexp.MustCompile(`/*.*/`)
+	cleanspace    = regexp.MustCompile(`^\s*`)
+	cleanh1       = regexp.MustCompile(`<h[1-6].*</h[1-6]>`)
+)
+
 // Content nav-point content
 type Content struct {
 	Src   string `xml:"src,attr" json:"src"`

pkg/epub/ncx.go

@@ -1,18 +1,5 @@
 package epub
 
-import (
-	"regexp"
-)
-
-var (
-	cleantitle    = regexp.MustCompile(`(?s)<head>.*</head>`)
-	cleanmarkup   = regexp.MustCompile(`<[^<>]+>`)
-	cleanentities = regexp.MustCompile(`&.+;`)
-	cleancomments = regexp.MustCompile(`/*.*/`)
-	cleanspace    = regexp.MustCompile(`^\s*`)
-	cleanh1       = regexp.MustCompile(`<h[1-6].*</h[1-6]>`)
-)
-
 // Ncx OPS/toc.ncx
 type Ncx struct {
 	Points []*NavPoint `xml:"navMap>navPoint" json:"points"`