mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-17 23:34:50 +00:00
312 lines
8.4 KiB
JavaScript
Executable File
312 lines
8.4 KiB
JavaScript
Executable File
//--
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//-- Filesystem code
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//--
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//#
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//# This code is designed to be reusable, but please take care,
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//# there are some intricacies that make it tricky to use these
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//# functions with full UTF-8 files. For more details, see:
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//#
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//# http://trac.tiddlywiki.org/ticket/99
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//#
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//#
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//# UTF-8 encoding rules:
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//# 0x0000 - 0x007F: 0xxxxxxx
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//# 0x0080 - 0x07FF: 110xxxxx 10xxxxxx
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//# 0x0800 - 0xFFFF: 1110xxxx 10xxxxxx 10xxxxxx
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function convertUTF8ToUnicode(u)
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{
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return config.browser.isOpera || !window.netscape ? manualConvertUTF8ToUnicode(u) : mozConvertUTF8ToUnicode(u);
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}
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function manualConvertUTF8ToUnicode(utf)
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{
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var uni = utf;
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var src = 0;
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var dst = 0;
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var b1, b2, b3;
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var c;
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while(src < utf.length) {
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b1 = utf.charCodeAt(src++);
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if(b1 < 0x80) {
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dst++;
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} else if(b1 < 0xE0) {
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b2 = utf.charCodeAt(src++);
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c = String.fromCharCode(((b1 & 0x1F) << 6) | (b2 & 0x3F));
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uni = uni.substring(0,dst++).concat(c,utf.substr(src));
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} else {
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b2 = utf.charCodeAt(src++);
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b3 = utf.charCodeAt(src++);
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c = String.fromCharCode(((b1 & 0xF) << 12) | ((b2 & 0x3F) << 6) | (b3 & 0x3F));
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uni = uni.substring(0,dst++).concat(c,utf.substr(src));
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}
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}
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return uni;
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}
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function mozConvertUTF8ToUnicode(u)
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{
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try {
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netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
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var converter = Components.classes["@mozilla.org/intl/scriptableunicodeconverter"].createInstance(Components.interfaces.nsIScriptableUnicodeConverter);
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converter.charset = "UTF-8";
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} catch(ex) {
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return manualConvertUTF8ToUnicode(u);
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} // fallback
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var s = converter.ConvertToUnicode(u);
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var fin = converter.Finish();
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return fin.length > 0 ? s+fin : s;
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}
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//# convert unicode string to a format suitable for saving to file
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//# this should be UTF8, unless the browser does not support saving non-ASCII characters
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function convertUnicodeToFileFormat(s)
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{
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return config.browser.isOpera || !window.netscape ? (config.browser.isIE ? convertUnicodeToHtmlEntities(s) : s) : mozConvertUnicodeToUTF8(s);
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}
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function convertUnicodeToHtmlEntities(s)
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{
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var re = /[^\u0000-\u007F]/g;
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return s.replace(re,function($0) {return "&#" + $0.charCodeAt(0).toString() + ";";});
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}
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function convertUnicodeToUTF8(s)
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{
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// return convertUnicodeToFileFormat to allow plugin migration
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return convertUnicodeToFileFormat(s);
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}
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function manualConvertUnicodeToUTF8(s)
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{
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return unescape(encodeURIComponent(s));
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}
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function mozConvertUnicodeToUTF8(s)
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{
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try {
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netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
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var converter = Components.classes["@mozilla.org/intl/scriptableunicodeconverter"].createInstance(Components.interfaces.nsIScriptableUnicodeConverter);
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converter.charset = "UTF-8";
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} catch(ex) {
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return manualConvertUnicodeToUTF8(s);
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} // fallback
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var u = converter.ConvertFromUnicode(s);
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var fin = converter.Finish();
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return fin.length > 0 ? u + fin : u;
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}
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function convertUriToUTF8(uri,charSet)
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{
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if(window.netscape == undefined || charSet == undefined || charSet == "")
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return uri;
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try {
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netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
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var converter = Components.classes["@mozilla.org/intl/utf8converterservice;1"].getService(Components.interfaces.nsIUTF8ConverterService);
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} catch(ex) {
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return uri;
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}
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return converter.convertURISpecToUTF8(uri,charSet);
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}
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function copyFile(dest,source)
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{
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return config.browser.isIE ? ieCopyFile(dest,source) : false;
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}
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function saveFile(fileUrl,content)
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{
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var r = mozillaSaveFile(fileUrl,content);
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if(!r)
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r = ieSaveFile(fileUrl,content);
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if(!r)
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r = javaSaveFile(fileUrl,content);
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return r;
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}
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function loadFile(fileUrl)
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{
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var r = mozillaLoadFile(fileUrl);
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if((r == null) || (r == false))
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r = ieLoadFile(fileUrl);
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if((r == null) || (r == false))
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r = javaLoadFile(fileUrl);
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return r;
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}
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function ieCreatePath(path)
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{
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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} catch(ex) {
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return null;
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}
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//# Remove the filename, if present. Use trailing slash (i.e. "foo\bar\") if no filename.
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var pos = path.lastIndexOf("\\");
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if(pos==-1)
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pos = path.lastIndexOf("/");
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if(pos!=-1)
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path = path.substring(0,pos+1);
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//# Walk up the path until we find a folder that exists
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var scan = [path];
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var parent = fso.GetParentFolderName(path);
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while(parent && !fso.FolderExists(parent)) {
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scan.push(parent);
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parent = fso.GetParentFolderName(parent);
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}
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//# Walk back down the path, creating folders
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for(i=scan.length-1;i>=0;i--) {
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if(!fso.FolderExists(scan[i])) {
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fso.CreateFolder(scan[i]);
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}
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}
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return true;
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}
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// Returns null if it can't do it, false if there's an error, true if it saved OK
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function ieSaveFile(filePath,content)
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{
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ieCreatePath(filePath);
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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} catch(ex) {
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//# alert("Exception while attempting to save\n\n" + ex.toString());
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return null;
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}
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var file = fso.OpenTextFile(filePath,2,-1,0);
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file.Write(content);
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file.Close();
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return true;
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}
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// Returns null if it can't do it, false if there's an error, or a string of the content if successful
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function ieLoadFile(filePath)
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{
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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var file = fso.OpenTextFile(filePath,1);
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var content = file.ReadAll();
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file.Close();
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} catch(ex) {
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//# alert("Exception while attempting to load\n\n" + ex.toString());
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return null;
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}
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return content;
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}
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function ieCopyFile(dest,source)
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{
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ieCreatePath(dest);
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try {
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var fso = new ActiveXObject("Scripting.FileSystemObject");
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fso.GetFile(source).Copy(dest);
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} catch(ex) {
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return false;
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}
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return true;
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}
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// Returns null if it can't do it, false if there's an error, true if it saved OK
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function mozillaSaveFile(filePath,content)
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{
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if(window.Components) {
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try {
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netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
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var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
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file.initWithPath(filePath);
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if(!file.exists())
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file.create(0,0x01B4);// 0x01B4 = 0664
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var out = Components.classes["@mozilla.org/network/file-output-stream;1"].createInstance(Components.interfaces.nsIFileOutputStream);
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out.init(file,0x22,0x04,null);
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out.write(content,content.length);
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out.flush();
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out.close();
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return true;
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} catch(ex) {
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//# alert("Exception while attempting to save\n\n" + ex);
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return false;
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}
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}
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return null;
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}
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// Returns null if it can't do it, false if there's an error, or a string of the content if successful
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function mozillaLoadFile(filePath)
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{
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if(window.Components) {
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try {
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netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
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var file = Components.classes["@mozilla.org/file/local;1"].createInstance(Components.interfaces.nsILocalFile);
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file.initWithPath(filePath);
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if(!file.exists())
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return null;
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var inputStream = Components.classes["@mozilla.org/network/file-input-stream;1"].createInstance(Components.interfaces.nsIFileInputStream);
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inputStream.init(file,0x01,0x04,null);
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var sInputStream = Components.classes["@mozilla.org/scriptableinputstream;1"].createInstance(Components.interfaces.nsIScriptableInputStream);
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sInputStream.init(inputStream);
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var contents = sInputStream.read(sInputStream.available());
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sInputStream.close();
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inputStream.close();
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return contents;
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} catch(ex) {
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//# alert("Exception while attempting to load\n\n" + ex);
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return false;
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}
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}
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return null;
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}
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function javaUrlToFilename(url)
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{
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var f = "//localhost";
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if(url.indexOf(f) == 0)
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return url.substring(f.length);
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var i = url.indexOf(":");
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return i > 0 ? url.substring(i-1) : url;
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}
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function javaSaveFile(filePath,content)
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{
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try {
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if(document.applets["TiddlySaver"])
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return document.applets["TiddlySaver"].saveFile(javaUrlToFilename(filePath),"UTF-8",content);
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} catch(ex) {
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}
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try {
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var s = new java.io.PrintStream(new java.io.FileOutputStream(javaUrlToFilename(filePath)));
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s.print(content);
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s.close();
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} catch(ex2) {
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return null;
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}
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return true;
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}
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function javaLoadFile(filePath)
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{
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try {
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if(document.applets["TiddlySaver"]) {
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var ret = document.applets["TiddlySaver"].loadFile(javaUrlToFilename(filePath),"UTF-8");
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if(!ret)
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return null;
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return String(ret);
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}
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} catch(ex) {
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}
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var content = [];
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try {
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var r = new java.io.BufferedReader(new java.io.FileReader(javaUrlToFilename(filePath)));
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var line;
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while((line = r.readLine()) != null)
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content.push(String(line));
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r.close();
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} catch(ex2) {
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return null;
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}
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return content.join("\n");
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}
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