HTML目录生成工具基础介绍
导读：园子里面很多博主都会为自己的博文创建目录，方便大家浏览。我很好奇大家是怎么做的，是不是有自动生成目录的工具可以推荐一下(我知道word可以，但是直接贴word文档会生成很多多余的html tag 。 前几天写前端网页最佳实践目录项实在有点...
园子里面很多博主都会为自己的博文创建目录，方便大家浏览。我很好奇大家是怎么做的，是不是有自动生成目录的工具可以推荐一下(我知道word可以，但是直接贴word文档会生成很多多余的html tag)。
前几天写前端网页最佳实践目录项实在有点多，手动加起来太麻烦了，我尝试搜了下没有找到，于是写了几行代码来完成这工作。拿出来分享给有同样需要的朋友。
工具代码
using System;
using System.IO;
using System.Text;
using System.Text.RegularExpressions;
namespace HtmlIndexGenerator
{
class Program
{
const string HeaderPattern = @"[sS]*?";
const string TagPattern = @"";
const string IdPattern = "(id|name)="(?[\s\S]*?)"";
const int MaxHeaderLimit = 6;
const string H1Style = @"font-weight:bold";
const string H2Style = @"";
const string H3Style = @"";
const string H4Style = @"";
const string H5Style = @"";
const string H6Style = @"font-size:10px;
";
static string[] HeaderStyles = new string[]{
H1Style,
H2Style,
H3Style,
H4Style,
H5Style,
H6Style
}
;
static void Main(string[] args)
{
string fileName;
int limit;
ParseParameter(args, out fileName, out limit);
string html = GetHtml(fileName);
if (string.IsNullOrEmpty(html))
return;
string index = GenerateIndex(html, limit);
string outputFile = "index.htm";
File.WriteAllText(outputFile, index, Encoding.UTF8);
Console.WriteLine("{
0}
generated.", outputFile);
}
///
/// Prints help document.
///
private static void PrintHelp()
{
Console.WriteLine("Usage: IndexGen.exe [filename] [-l] level");
Console.WriteLine("-l: header level limit, -l 3 limit the output to ");
Console.WriteLine("Example: IndexGen.exe page.htm");
}
///
/// Parses command line paramters.
///
/// Input parameters
/// Output parameter for parsed file name. Null if parse failed.
/// Output parameter for header level limit.
private static void ParseParameter(string[] args, out string fileName, out int limit)
{
fileName = null;
limit = MaxHeaderLimit;
for (int i = 0;
i = args.Length || !int.TryParse(args[i + 1], out limit))
{
Console.WriteLine("Invalid parameter for -l");
PrintHelp();
return;
}
}
}
if (args.Length >
0)
{
fileName = args[args.Length - 1];
}
}
///
/// Reads html content according to specified file name.
///
/// File name
/// Html content of the specific file.
private static string GetHtml(string fileName)
{
string html = null;
if (string.IsNullOrEmpty(fileName))
{
Console.WriteLine("Specify a file name");
PrintHelp();
return html;
}
if (!File.Exists(fileName))
{
Console.WriteLine("File {
0}
dose not exist", fileName);
PrintHelp();
return html;
}
// Auto defect file encoding.
using (StreamReader reader = new StreamReader(fileName, detectEncodingFromByteOrderMarks: true))
{
Encoding encoding = reader.CurrentEncoding;
html = File.ReadAllText(fileName, encoding);
}
return html;
}
///
/// Generates the index html.
///
/// Html content of specified file.
/// Header limit
/// Generated index html
private static string GenerateIndex(string html, int limit)
{
Regex regex = new Regex(HeaderPattern, RegexOptions.IgnoreCase);
Regex regexId = new Regex(IdPattern, RegexOptions.IgnoreCase);
MatchCollection headerMatches = regex.Matches(html);
int previousLevel = 1;
StringBuilder indexBuilder = new StringBuilder();
indexBuilder.Append("");
indexBuilder.Append("");
foreach (Match headerMatch in headerMatches)
{
int currentLevel = int.Parse(headerMatch.Groups["level"].Value);
string header = Regex.Replace(headerMatch.Value, TagPattern, string.Empty);
Match idMatch = regexId.Match(headerMatch.Value);
string id = idMatch.Success ? idMatch.Groups["id"].Value : null;
string link = string.IsNullOrEmpty(id) ? header : string.Format("{
1}
", id, header);
if (currentLevel == previousLevel)
{
indexBuilder.AppendFormat("- {
0}
", link, HeaderStyles[currentLevel - 1]);
}
else if (currentLevel >
previousLevel &
&
currentLevel
- ");
foreach (Match headerMatch in headerMatches)
{
int currentLevel = int.Parse(headerMatch.Groups["level"].Value);
string header = Regex.Replace(headerMatch.Value, TagPattern, string.Empty);
Match idMatch = regexId.Match(headerMatch.Value);
string id = idMatch.Success ? idMatch.Groups["id"].Value : null;
string link = string.IsNullOrEmpty(id) ? header : string.Format("{
1}
", id, header);
if (currentLevel == previousLevel)
{
indexBuilder.AppendFormat("
- { 0} ", link, HeaderStyles[currentLevel - 1]); } else if (currentLevel > previousLevel & & currentLevel
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