如何从字符串创建SEO友好的短划线分隔网址?

问题描述

采用一个字符串，例如:

Take a string such as:

并将其转换为:

要求:

• 用破折号分隔每个单词，并删除所有标点符号(考虑到并非所有单词都用空格分隔.)
• 函数采用最大长度，并获得小于该最大长度的所有令牌.示例:ToSeoFriendly("hello world hello world", 14)返回"hello-world"
• 所有单词都转换为小写.

• Separate each word by a dash and remove all punctuation (taking into account not all words are separated by spaces.)
• Function takes in a max length, and gets all tokens below that max length. Example: ToSeoFriendly("hello world hello world", 14) returns "hello-world"
• All words are converted to lower case.

另外，应该有一个最小长度吗?

On a separate note, should there be a minimum length?

推荐答案

这是我在C#中的解决方案

Here is my solution in C#

private string ToSeoFriendly(string title, int maxLength) {
    var match = Regex.Match(title.ToLower(), "[\\w]+");
    StringBuilder result = new StringBuilder("");
    bool maxLengthHit = false;
    while (match.Success && !maxLengthHit) {
        if (result.Length + match.Value.Length <= maxLength) {
            result.Append(match.Value + "-");
        } else {
            maxLengthHit = true;
            // Handle a situation where there is only one word and it is greater than the max length.
            if (result.Length == 0) result.Append(match.Value.Substring(0, maxLength));
        }
        match = match.NextMatch();
    }
    // Remove trailing '-'
    if (result[result.Length - 1] == '-') result.Remove(result.Length - 1, 1);
    return result.ToString();
}

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