/// <summary>
/// 替换图片的源路径
/// </summary>
/// <param name="content"></param>
/// <param name="documentRawRootUrl"></param>
/// <param name="localDirectory"></param>
/// <returns></returns>
public static string ReplaceImageSources(string content, string documentRawRootUrl, string localDirectory)
{
if (content == null)
{
return(null);
}
content = Regex.Replace(content, @"(<img\s+[^>]*)src=""([^""]*)""([^>]*>)", delegate(Match match)
{
if (WebUrlHelper.IsExternalLink(match.Groups[2].Value))
{
return(match.Value);
}
//本地的图片，需要上传到图床中去
var newImageSource = documentRawRootUrl.EnsureEndsWith('/') +
(localDirectory.IsNullOrEmpty() ? "" : localDirectory.TrimStart('/').EnsureEndsWith('/')) +
match.Groups[2].Value.TrimStart('/');
var url = match.Groups[1] + " src=\"" + newImageSource + "\" " + match.Groups[3];
return(url);
}, RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Multiline);
return(content);
}
/// <summary>
/// 对URL路径进行替换和重组
/// </summary>
/// <param name="content"></param>
/// <returns></returns>
protected virtual string NormalizeLinks(
string content
)
{
var normalized = Regex.Replace(content, MarkdownLinkRegExp, delegate(Match match)
{
var link = match.Groups[2].Value;
if (WebUrlHelper.IsExternalLink(link))
{
return(match.Value);
}
var displayText = match.Groups[1].Value;
var documentName = RemoveFileExtension(link);
var result = string.Format(MdLinkFormat,
displayText,
documentName
);
return(result);
});
normalized = Regex.Replace(normalized, AnchorLinkRegExp, delegate(Match match)
{
var link = match.Groups[1].Value;
if (WebUrlHelper.IsExternalLink(link))
{
return(match.Value);
}
var displayText = match.Groups[2].Value;
var documentName = RemoveFileExtension(link);
return(string.Format(
MdLinkFormat,
displayText,
documentName
));
});
return(normalized);
}
/// <summary>
/// 上传图片到图床地址中
/// </summary>
/// <param name="content"></param>
/// <param name="input"></param>
/// <param name="postConfig"></param>
/// <returns></returns>
private async Task <string> UploadpicturesToPictureBedAsync(string content, GitlabPostsNavInput input, PostItems postConfig)
{
if (content == null)
{
return(null);
}
//获取上传图片列表
var toDoImgBedList = Regex.Matches(content, @"(<img\s+[^>]*)src=""([^""]*)""([^>]*>)", RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Multiline);
var newSourceImagesList = new List <string>();
foreach (Match itemPic in toDoImgBedList)
{
//检查是否为外联，如果是外联按不处理
if (WebUrlHelper.IsExternalLink(itemPic.Groups[2].Value))
{
newSourceImagesList.Add(itemPic.Groups[2].Value);
//检查图片是否为外部链接
}
else
{
input.FileName = itemPic.Groups[2].Value;
var file = await _gitlabClientAppService.GetGitlabFileInfo(input);
if (file == null)
{
continue;
}
//获取当前图片的base64，然后上传到图床中。
var tags = postConfig.tags.Split(',');
var directoryPath = $"{postConfig.blogShortName}/{tags[0]}";
//存放的图床仓库和地址
var pictureToBed = new UploadPictureToBed
{
PathWithNamespace = "52abp/picturebed",
file = file,
DirectoryPath = directoryPath
};
//上传图片到指定图床
var imgRawUrl = await _gitlabClientAppService.UploadPictureToImgBed(pictureToBed);
newSourceImagesList.Add(imgRawUrl);
//install-ubuntu-1.png
//http://code.52abp.com/52abp/picturebed/raw/master/2020/04/28/install-ubuntu-1.png
}
}
//将本地图源，替换为远程图床的图源
content = Regex.Replace(content, @"(<img\s+[^>]*)src=""([^""]*)""([^>]*>)", (Match match) =>
{
var oldImageSource = match.Groups[2].Value;
if (WebUrlHelper.IsExternalLink(oldImageSource))
{
//检查图片是否为外部链接
var newurl = match.Groups[1] + " class=\"img-fluid\" src =\"" + oldImageSource + "\" " + match.Groups[3];
return(newurl);
// return match.Value;
}
oldImageSource = Path.GetFileName(oldImageSource);
var newImageSource = newSourceImagesList
.FirstOrDefault(a => a.EndsWith(oldImageSource));
var url = match.Groups[1] + " class=\"img-fluid\" src =\"" + newImageSource + "\" " + match.Groups[3];
return(url);
}, RegexOptions.IgnoreCase | RegexOptions.Singleline | RegexOptions.Multiline);
return(content);
}