zutils/cmd/read.go

package cmd

import (
	"fmt"
	"os"

	"github.com/zemenawi/zutils/pkg/formatter"
)

var ReadHelp = CommandHelp{
	Name:  "read",
	Help:  "Read and display file with smart detection.\nAutomatically detects file type:\n  - Markdown (.md) - Renders with colored headings, lists, code blocks\n  - Code files - Syntax highlighting with line numbers\n  - Other files - Plain text display",
	Examples: []string{
		"z read README.md              # Read markdown file",
		"z read main.go                # Read code with syntax highlighting",
		"z read package.json           # Read JSON file",
	},
}

func ReadCommand(args []string) error {
	if len(args) < 1 {
		return fmt.Errorf("missing file path\n\nUsage: z read <file>")
	}

	filePath := args[0]

	file, err := os.Open(filePath)
	if err != nil {
		return fmt.Errorf("cannot open file '%s': %s", filePath, err)
	}
	defer file.Close()

	fileInfo, err := file.Stat()
	if err != nil {
		return fmt.Errorf("cannot read file info '%s': %s", filePath, err)
	}

	if fileInfo.IsDir() {
		return fmt.Errorf("'%s' is a directory\n\nUse: z info dir %s", filePath, filePath)
	}

	handler := formatter.ReadHandlers.GetHandler(filePath)
	if handler != nil {
		return handler(args)
	}

	return formatter.ReadFileWithHighlight(file, filePath)
}