【问题】
最新刚更新了Win7，包括升级IE9到IE10。
但是却发现，原来在WLW(Windows Live Writer)中正常工作的，我自己写的插件：picturemanager却不工作了：
无法正常的检索WLW中插入的本地图片，并替换对应的图片地址了。
且会导致WLW死掉。
【解决过程】
1.看来还得去专门调试一把。
2.调试发现，原来之前的，正则表达式：
1 2 3 | string imgP = @"<A\s+?(?<wholeHref>href=""file:///(?<hrefFullname>(?<hrefPath>.+?WindowsLiveWriter-?\d+/supfiles\w+/).+?(?<pointSuf>\.\w{3,4}))""(?<spaceTarget>\s+?target="".+?"")?).*?>.+?(?<titleStr>title=""?(?<title>[^""]+)""?)\s+(border=.+?\s+)?(?<altStr>alt=""?\k<title>""?)\s+src=""file:///(?<srcFullname>\k<hrefPath>(?<srcFilename>.+?)\k<pointSuf>)"".+?(?<widthHeight>width=(?<width>\d+)\s+?height=(?<height>\d+)).*?></A>";Regex imgRx = new Regex(imgP, RegexOptions.Singleline | RegexOptions.IgnoreCase); |
对于如下的html：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | <P><A target=_blank><IMG title="reply for use a record"style="BORDER-LEFT-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px; BACKGROUND-IMAGE: none; BORDER-BOTTOM-WIDTH: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; DISPLAY: inline; PADDING-RIGHT: 0px; BORDER-TOP-WIDTH: 0px"border=0 alt="reply for use a record"width=640 height=384></A></P><P><A title="use 80 port to login hawk cpanel"style="BORDER-LEFT-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px; BACKGROUND-IMAGE: none; BORDER-BOTTOM-WIDTH: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; DISPLAY: inline; PADDING-RIGHT: 0px; BORDER-TOP-WIDTH: 0px"border=0 alt="use 80 port to login hawk cpanel"width=712 height=699></A></P> |
是不匹配的，所以搜不到图片，无法实现地址替换了。
对应的原因是：
之前的情况是：style是在title之前
现在的情况变成了：style变到title之后了
所以之前的正则失效了。
然后看着如此复杂的正则，实在效率很低。
即使此处改正确了，等以后万一再变化一点点，则还是会出错。
所以，想办法换成之前所用的html的解析库：HtmlAgilityPack。
3.后来都写好了完整的代码了：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 | private void commonProcessFunction(){ processedContent = curSelectCotent; //special is not thumb: //after replace: //<P><A //href="file:///C:/Users/CLi/AppData/Local/Temp/WindowsLiveWriter2049324412/supfilesC93787/select-1st-cell-can-show-or-hidden_t.png" target="_blank"><IMG //style="BACKGROUND-IMAGE: none; BORDER-RIGHT-WIDTH: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; DISPLAY: inline; BORDER-TOP-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; PADDING-TOP: 0px" //title="select 1st cell can show or hidden" border=0 //alt="select 1st cell can show or hidden" //width=414 height=1204></A></P> //<P><A //href="file:///C:/Users/Administrator/AppData/Local/Temp/WindowsLiveWriter-1642303840/supfiles360FE7B/笑抽了 - 重口味的1楼和具有舍身精神的4楼[2].jpg"><IMG //style="BACKGROUND-IMAGE: none; BORDER-RIGHT-WIDTH: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; DISPLAY: inline; BORDER-TOP-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; BORDER-LEFT-WIDTH: 0px; PADDING-TOP: 0px" //title="笑抽了 - 重口味的1楼和具有舍身精神的4楼" border=0 alt="笑抽了 - 重口味的1楼和具有舍身精神的4楼" //src="file:///C:/Users/Administrator/AppData/Local/Temp/WindowsLiveWriter-1642303840/supfiles360FE7B/笑抽了 - 重口味的1楼和具有舍身精神的4楼_thumb.jpg" //width=607 height=803></A></P> //no border: //<P><A //href="file:///C:/Users/Administrator/AppData/Local/Temp/WindowsLiveWriter-1642303840/supfiles383DC9A/监控拍下的小偷：大姐，您这一箱啤酒放哪儿了？[2].gif"><IMG //style="DISPLAY: inline" title=监控拍下的小偷：大姐，您这一箱啤酒放哪儿了？ alt=监控拍下的小偷：大姐，您这一箱啤酒放哪儿了？ //src="file:///C:/Users/Administrator/AppData/Local/Temp/WindowsLiveWriter-1642303840/supfiles383DC9A/监控拍下的小偷：大姐，您这一箱啤酒放哪儿了？_thumb.gif" //width=234 height=165></A> </P> //<P><A //target=_blank><IMG title="reply for use a record" //style="BORDER-LEFT-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px; BACKGROUND-IMAGE: none; BORDER-BOTTOM-WIDTH: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; DISPLAY: inline; PADDING-RIGHT: 0px; BORDER-TOP-WIDTH: 0px" //border=0 alt="reply for use a record" //width=640 height=384></A></P> //<P><A //href="file:///C:/Users/CLi/AppData/Local/Temp/WindowsLiveWriter-1737927945/supfiles22CDBA/use-80-port-to-login-hawk-cpanel2.png"><IMG //title="use 80 port to login hawk cpanel" //style="BORDER-LEFT-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px; BACKGROUND-IMAGE: none; BORDER-BOTTOM-WIDTH: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; DISPLAY: inline; PADDING-RIGHT: 0px; BORDER-TOP-WIDTH: 0px" //border=0 alt="use 80 port to login hawk cpanel" //width=712 height=699></A></P> HtmlAgilityPack.HtmlDocument htmlDoc = crl.htmlToHtmlDoc(processedContent); HtmlNode rootNode = htmlDoc.DocumentNode; HtmlNodeCollection aImgNodeList = rootNode.SelectNodes("//p/a[contains(@href, 'AppData/Local/Temp/WindowsLiveWriter-')]"); if (aImgNodeList != null) { foreach (HtmlNode aImgNode in aImgNodeList) { string originalAImgHtml = aImgNode.OuterHtml; string aHrefVal = aImgNode.Attributes["href"].Value; if (ckbTargetBlank.Checked) { //always set to target="_blank" aImgNode.SetAttributeValue("target", "_blank"); } HtmlNode imgNode = aImgNode.SelectSingleNode("./img"); if (imgNode != null) { string imgSrcVal = imgNode.Attributes["src"].Value; //the processed and uploaded picture, also here contains Local/Temp/WindowsLiveWriter- //<P><A //target=_blank><IMG title="now the service status is active_thumb" //style="BORDER-LEFT-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px; BORDER-BOTTOM-WIDTH: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; MARGIN: 0px; PADDING-RIGHT: 0px; BORDER-TOP-WIDTH: 0px" //border=0 alt="now the service status is active_thumb" //width=640 height=452></A></P> //so need check whether href is same with src if (aHrefVal.Equals(imgSrcVal, StringComparison.OrdinalIgnoreCase)) { //already processed, not handle } else { if (ckbReplaceHrefWithSr.Checked) { aImgNode.SetAttributeValue("href", imgSrcVal); } } if (ckbAutoScale.Checked) { string realSrcFullname; string srcFilename; //string decodedSrcFilename; //used for translation int srcFileWidth, srcFileHeight; //int maxWidth = 640, maxHeight = 480; int maxWidth = 640; int newWidth, newHeight; string srcFullname = imgSrcVal; srcFilename = crl.extractFilenameFromUrl(imgSrcVal); //check file exist or not, and find out the real full filename and filename if (!System.IO.File.Exists(srcFullname)) { realSrcFullname = HttpUtility.UrlDecode(imgSrcVal); //decodedSrcFilename = HttpUtility.UrlDecode(srcFilename); } else { realSrcFullname = srcFullname; //decodedSrcFilename = srcFilename; } //remove file:///, otherwise will Image.FromFile will fail !!! string noFilePrefixRealSrcFullname = realSrcFullname; { noFilePrefixRealSrcFullname = realSrcFullname.Substring(8); } Image img = Image.FromFile(noFilePrefixRealSrcFullname); //"C:/Users/CLi/AppData/Local/Temp/WindowsLiveWriter-1737927945/supfilesECB445/use-80-port-to-login-hawk-cpanel_thu.png" srcFileWidth = img.Width; srcFileHeight = img.Height; //here only scale according to width if (srcFileWidth > maxWidth) { newWidth = maxWidth; newHeight = newWidth * srcFileHeight / srcFileWidth; imgNode.SetAttributeValue("width", newWidth.ToString()); imgNode.SetAttributeValue("height", newHeight.ToString()); } //replace img html //originalAImgHtml = originalAImgHtml.Replace(imgNode.OuterHtml, imgNode.WriteTo()); } //do finnal replace string newAImgHtml = aImgNode.WriteTo(); processedContent = processedContent.Replace(originalAImgHtml, newAImgHtml); } else { //something wrong } } }} |
结果却是：
对于originalAImgHtml，实际上和本身的html不同：
即原先的html是：
1 2 3 4 5 6 7 | <A title="use 80 port to login hawk cpanel"style="BORDER-LEFT-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px; BACKGROUND-IMAGE: none; BORDER-BOTTOM-WIDTH: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; DISPLAY: inline; PADDING-RIGHT: 0px; BORDER-TOP-WIDTH: 0px"border=0 alt="use 80 port to login hawk cpanel"width=712 height=699></A> |
而originalAImgHtml，即aImgNode.OuterHtml却是，处理后的：
1 | <a href="file:///C:/Users/CLi/AppData/Local/Temp/WindowsLiveWriter-1737927945/supfilesFFB3D9/use-80-port-to-login-hawk-cpanel_thu.png" target="_blank"><img title="use 80 port to login hawk cpanel" style="BORDER-LEFT-WIDTH: 0px; BORDER-RIGHT-WIDTH: 0px; BACKGROUND-IMAGE: none; BORDER-BOTTOM-WIDTH: 0px; PADDING-TOP: 0px; PADDING-LEFT: 0px; DISPLAY: inline; PADDING-RIGHT: 0px; BORDER-TOP-WIDTH: 0px" border="0" alt="use 80 port to login hawk cpanel" src="file:///C:/Users/CLi/AppData/Local/Temp/WindowsLiveWriter-1737927945/supfilesFFB3D9/use-80-port-to-login-hawk-cpanel_thu.png" width="640" height="628"></a> |
很明显，改变了：
标签的大小写
把一些属性，比如width和height的值，都加上了对应的引号
如此，导致：
虽然我们可以修改标签的各个属性值，且可以获得修改后的内容
但是由于最原始的originalAImgHtml，根本就不存在，所以
processedContent = processedContent.Replace(originalAImgHtml, newAImgHtml);
根本没有生效，所以导致我们此处的替换无效。
即，浪费了半天功夫，根本没有实现替换功能。
4.所以，看来还是只能换回原先的，用正则处理的了。
最后，为了匹配新的，style在boarder之后的，只是把：
| string imgP = @"<A\s+?(?<wholeHref>href=""file:///(?<hrefFullname>(?<hrefPath>.+?WindowsLiveWriter-?\d+/supfiles\w+/).+?(?<pointSuf>\.\w{3,4}))""(?<spaceTarget>\s+?target="".+?"")?).*?>.+?(?<titleStr>title=""?(?<title>[^""]+)""?)\s+(border=.+?\s+)?(?<altStr>alt=""?\k<title>""?)\s+src=""file:///(?<srcFullname>\k<hrefPath>(?<srcFilename>.+?)\k<pointSuf>)"".+?(?<widthHeight>width=(?<width>\d+)\s+?height=(?<height>\d+)).*?></A>"; |
换为：
| string imgP = @"<A\s+?(?<wholeHref>href=""file:///(?<hrefFullname>(?<hrefPath>.+?WindowsLiveWriter-?\d+/supfiles\w+/).+?(?<pointSuf>\.\w{3,4}))""(?<spaceTarget>\s+?target="".+?"")?).*?>.+?(?<titleStr>title=""?(?<title>[^""]+)""?)\s+.+?(border=.+?\s+)?(?<altStr>alt=""?\k<title>""?)\s+src=""file:///(?<srcFullname>\k<hrefPath>(?<srcFilename>.+?)\k<pointSuf>)"".+?(?<widthHeight>width=(?<width>\d+)\s+?height=(?<height>\d+)).*?></A>"; |
即可。
至此，目前至少还是可以继续使用了。
【总结】
一次普通的Win7的update，竟然会影响到到WLW，真是无语了。。。