Argument for git repo directory

gif.go

@@ -8,7 +8,7 @@ import (
 	"strings"
 )
 
-func generateGIF(outputPath, theme string, lines []string, cardCount int) error {
+func generateGIF(outputPath, theme string, dir string, lines []string, cardCount int) error {
 	// check vhs installed
 	vhsPath, err := exec.LookPath("vhs")
 	if err != nil {
@@ -62,9 +62,14 @@ func generateGIF(outputPath, theme string, lines []string, cardCount int) error
 	tape.WriteString("Set TypingSpeed 0\n")
 
 	cmd := selfPath
+	// perhaps we need some better logic here?
 	if theme != "default" {
 		cmd += " --theme " + theme
 	}
+	if dir != "" {
+		cmd += " " + dir
+	}
+
 	tape.WriteString(fmt.Sprintf("Type \"%s\"\n", cmd))
 	tape.WriteString("Enter\n")
 	tape.WriteString(fmt.Sprintf("Sleep %ds\n", duration))

git.go

@@ -25,12 +25,22 @@ type contributor struct {
 	commits int
 }
 
-func getRepoInfo() repoInfo {
+func getRepoInfo(dir string) repoInfo {
 	info := repoInfo{}
+	currentDir := ""
+
+	if dir != "" {
+		if wd, err := os.Getwd(); err != nil {
+			fmt.Fprintf(os.Stderr, "Error while attempting check current working directory \"%s\": %v\n", dir, err)
+			os.Exit(1)
+		} else {
+			currentDir = wd
+		}
 
-	if dir, err := os.Getwd(); err == nil {
-		parts := strings.Split(dir, string(os.PathSeparator))
-		info.name = parts[len(parts)-1]
+		if err := os.Chdir(dir); err != nil {
+			fmt.Fprintf(os.Stderr, "Error while attempting to navigate to directory \"%s\": %v\n", dir, err)
+			os.Exit(1)
+		}
 	}
 
 	if desc, err := os.ReadFile(".git/description"); err == nil {
@@ -116,6 +126,14 @@ func getRepoInfo() repoInfo {
 		}
 	}
 
+	// go back to the dirrectory we were when the function was invoked
+	if currentDir != "" {
+		if err := os.Chdir(currentDir); err != nil {
+			fmt.Fprintf(os.Stderr, "Error while attempting to navigate back to start directory \"%s\": %v\n", dir, err)
+			os.Exit(1)
+		}
+	}
+
 	return info
 }
 

main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"fmt"
+	"strings"
 	"os"
 
 	tea "github.com/charmbracelet/bubbletea"
@@ -17,6 +18,7 @@ func main() {
 	// parse flags
 	theme := "default"
 	output := ""
+	dir := ""
 	for i, arg := range os.Args[1:] {
 		if arg == "--version" || arg == "-v" {
 			fmt.Printf("gitcredits %s (%s)\n", version, commit)
@@ -25,7 +27,10 @@ func main() {
 		if arg == "--help" || arg == "-h" {
 			fmt.Println("gitcredits - Turn your Git repo into movie-style rolling credits")
 			fmt.Println()
-			fmt.Printf("Usage: gitcredits [options]\n\n")
+			fmt.Printf("Usage: gitcredits [options] <directory>\n\n")
+			fmt.Println("Arguments:")
+			fmt.Println("  <directory>      Directory to look for a git repository (if not supplied, defaults to current directory)")
+			fmt.Println()
 			fmt.Println("Options:")
 			fmt.Println("  --theme <name>   Theme: default, matrix, spiderman")
 			fmt.Println("  --output <file>  Export credits as GIF")
@@ -41,7 +46,13 @@ func main() {
 		}
 	}
 
-	info := getRepoInfo()
+	if len(os.Args) > 1 {
+		if !strings.HasPrefix(os.Args[len(os.Args)-2], "--") {
+			dir = os.Args[len(os.Args)-1]
+		}
+	}
+
+	info := getRepoInfo(dir)
 
 	width := 80
 	height := 24
@@ -58,7 +69,7 @@ func main() {
 		default:
 			cards = buildMatrixCards(info, 80, 24)
 		}
-		if err := generateGIF(output, theme, credits, len(cards)); err != nil {
+		if err := generateGIF(output, theme, dir, credits, len(cards)); err != nil {
 			fmt.Fprintf(os.Stderr, "Error: %v\n", err)
 			os.Exit(1)
 		}