bookmarkTabEdit.go

package a4webbm

import (
	"fmt"
	"strings"
)

// ExtractTab returns the text for a tab by name including the 'Tab:' line.
func ExtractTab(bookmarks, name string) (string, error) {
	lines := strings.Split(bookmarks, "\n")
	start := -1
	end := len(lines)
	lower := strings.ToLower(name)
	for i, line := range lines {
		trimmed := strings.TrimSpace(line)
		if strings.HasPrefix(strings.ToLower(trimmed), "tab:") {
			tabName := strings.TrimSpace(line[4:])
			if start == -1 && strings.EqualFold(tabName, lower) {
				start = i
			} else if start != -1 {
				end = i
				break
			}
		}
	}
	if start == -1 {
		return "", fmt.Errorf("tab %s not found", name)
	}
	return strings.Join(lines[start:end], "\n"), nil
}

// ReplaceTab replaces the tab with name with newName and newText.
// newText should not include the leading 'Tab:' line.
func ReplaceTab(bookmarks, name, newName, newText string) (string, error) {
	lines := strings.Split(bookmarks, "\n")
	start := -1
	end := len(lines)
	lower := strings.ToLower(name)
	for i, line := range lines {
		trimmed := strings.TrimSpace(line)
		if strings.HasPrefix(strings.ToLower(trimmed), "tab:") {
			tabName := strings.TrimSpace(line[4:])
			if start == -1 && strings.EqualFold(tabName, lower) {
				start = i
			} else if start != -1 {
				end = i
				break
			}
		}
	}
	if start == -1 {
		return "", fmt.Errorf("tab %s not found", name)
	}
	var result []string
	result = append(result, lines[:start]...)
	result = append(result, "Tab: "+newName)
	if newText != "" {
		newLines := strings.Split(strings.TrimSuffix(newText, "\n"), "\n")
		result = append(result, newLines...)
	}
	result = append(result, lines[end:]...)
	return strings.Join(result, "\n"), nil
}

// AppendTab appends a new tab with name and text to bookmarks.
func AppendTab(bookmarks, name, text string) string {
	if !strings.HasSuffix(bookmarks, "\n") {
		bookmarks += "\n"
	}
	bookmarks += "Tab: " + name
	if text != "" {
		if !strings.HasSuffix(text, "\n") {
			text += "\n"
		}
		bookmarks += "\n" + strings.TrimSuffix(text, "\n")
	}
	if !strings.HasSuffix(bookmarks, "\n") {
		bookmarks += "\n"
	} else {
		if !strings.HasSuffix(bookmarks, "\n\n") {
			bookmarks += ""
		}
	}
	return bookmarks
}