代码练习:简单的纯文本转HTML
谁能写一个函数,实现如下功能,不需要调试一次就通过,且没有BUG。需求:输入:"ab\r\ncde\r\nfghi"输出:"<p>ab</p><p>cde</p><p>fghi</p>",注意无论任何输出<p>和</p>都要配对出现,且<p>和</p>之间不能为空
public static string Text2HtmlSimple(string input) { StringBuilder sb = new StringBuilder(); sb.Append("<p>"); int index = 0; do { string toAppend = string.Empty; int pos = input.IndexOf("\r\n", index); if (pos == 0) { index = pos + 2; } else if (pos == input.Length - 2) { toAppend = input.Substring(index, pos - index); if (!string.IsNullOrEmpty(toAppend)) { sb.AppendFormat("{0}</p>", toAppend); } index = pos + 2; } else if (pos > 0) { toAppend = input.Substring(index, pos - index); if (!string.IsNullOrEmpty(toAppend)) { sb.AppendFormat("{0}</p><p>", toAppend); } index = pos + 2; } else { toAppend = input.Substring(index, input.Length - index); sb.AppendFormat("{0}</p>", toAppend); break; } } while (index < input.Length); return sb.ToString(); }