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Diffstat (limited to 'pyserver/static/FileSaver.js')
| -rw-r--r-- | pyserver/static/FileSaver.js | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/pyserver/static/FileSaver.js b/pyserver/static/FileSaver.js new file mode 100644 index 0000000..55193a5 --- /dev/null +++ b/pyserver/static/FileSaver.js @@ -0,0 +1,270 @@ +/* FileSaver.js + * A saveAs() FileSaver implementation. + * 1.1.20151003 + * + * By Eli Grey, http://eligrey.com + * License: MIT + * See https://github.com/eligrey/FileSaver.js/blob/master/LICENSE.md + */ + +/*global self */ +/*jslint bitwise: true, indent: 4, laxbreak: true, laxcomma: true, smarttabs: true, plusplus: true */ + +/*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */ + +var saveAs = saveAs || (function(view) { + "use strict"; + // IE <10 is explicitly unsupported + if (typeof navigator !== "undefined" && /MSIE [1-9]\./.test(navigator.userAgent)) { + return; + } + var + doc = view.document + // only get URL when necessary in case Blob.js hasn't overridden it yet + , get_URL = function() { + return view.URL || view.webkitURL || view; + } + , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a") + , can_use_save_link = "download" in save_link + , click = function(node) { + var event = new MouseEvent("click"); + node.dispatchEvent(event); + } + , is_safari = /Version\/[\d\.]+.*Safari/.test(navigator.userAgent) + , webkit_req_fs = view.webkitRequestFileSystem + , req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem + , throw_outside = function(ex) { + (view.setImmediate || view.setTimeout)(function() { + throw ex; + }, 0); + } + , force_saveable_type = "application/octet-stream" + , fs_min_size = 0 + // See https://code.google.com/p/chromium/issues/detail?id=375297#c7 and + // https://github.com/eligrey/FileSaver.js/commit/485930a#commitcomment-8768047 + // for the reasoning behind the timeout and revocation flow + , arbitrary_revoke_timeout = 500 // in ms + , revoke = function(file) { + var revoker = function() { + if (typeof file === "string") { // file is an object URL + get_URL().revokeObjectURL(file); + } else { // file is a File + file.remove(); + } + }; + if (view.chrome) { + revoker(); + } else { + setTimeout(revoker, arbitrary_revoke_timeout); + } + } + , dispatch = function(filesaver, event_types, event) { + event_types = [].concat(event_types); + var i = event_types.length; + while (i--) { + var listener = filesaver["on" + event_types[i]]; + if (typeof listener === "function") { + try { + listener.call(filesaver, event || filesaver); + } catch (ex) { + throw_outside(ex); + } + } + } + } + , auto_bom = function(blob) { + // prepend BOM for UTF-8 XML and text/* types (including HTML) + if (/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(blob.type)) { + return new Blob(["\ufeff", blob], {type: blob.type}); + } + return blob; + } + , FileSaver = function(blob, name, no_auto_bom) { + if (!no_auto_bom) { + blob = auto_bom(blob); + } + // First try a.download, then web filesystem, then object URLs + var + filesaver = this + , type = blob.type + , blob_changed = false + , object_url + , target_view + , dispatch_all = function() { + dispatch(filesaver, "writestart progress write writeend".split(" ")); + } + // on any filesys errors revert to saving with object URLs + , fs_error = function() { + if (target_view && is_safari && typeof FileReader !== "undefined") { + // Safari doesn't allow downloading of blob urls + var reader = new FileReader(); + reader.onloadend = function() { + var base64Data = reader.result; + target_view.location.href = "data:attachment/file" + base64Data.slice(base64Data.search(/[,;]/)); + filesaver.readyState = filesaver.DONE; + dispatch_all(); + }; + reader.readAsDataURL(blob); + filesaver.readyState = filesaver.INIT; + return; + } + // don't create more object URLs than needed + if (blob_changed || !object_url) { + object_url = get_URL().createObjectURL(blob); + } + if (target_view) { + target_view.location.href = object_url; + } else { + var new_tab = view.open(object_url, "_blank"); + if (new_tab == undefined && is_safari) { + //Apple do not allow window.open, see http://bit.ly/1kZffRI + view.location.href = object_url + } + } + filesaver.readyState = filesaver.DONE; + dispatch_all(); + revoke(object_url); + } + , abortable = function(func) { + return function() { + if (filesaver.readyState !== filesaver.DONE) { + return func.apply(this, arguments); + } + }; + } + , create_if_not_found = {create: true, exclusive: false} + , slice + ; + filesaver.readyState = filesaver.INIT; + if (!name) { + name = "download"; + } + if (can_use_save_link) { + object_url = get_URL().createObjectURL(blob); + setTimeout(function() { + save_link.href = object_url; + save_link.download = name; + click(save_link); + dispatch_all(); + revoke(object_url); + filesaver.readyState = filesaver.DONE; + }); + return; + } + // Object and web filesystem URLs have a problem saving in Google Chrome when + // viewed in a tab, so I force save with application/octet-stream + // http://code.google.com/p/chromium/issues/detail?id=91158 + // Update: Google errantly closed 91158, I submitted it again: + // https://code.google.com/p/chromium/issues/detail?id=389642 + if (view.chrome && type && type !== force_saveable_type) { + slice = blob.slice || blob.webkitSlice; + blob = slice.call(blob, 0, blob.size, force_saveable_type); + blob_changed = true; + } + // Since I can't be sure that the guessed media type will trigger a download + // in WebKit, I append .download to the filename. + // https://bugs.webkit.org/show_bug.cgi?id=65440 + if (webkit_req_fs && name !== "download") { + name += ".download"; + } + if (type === force_saveable_type || webkit_req_fs) { + target_view = view; + } + if (!req_fs) { + fs_error(); + return; + } + fs_min_size += blob.size; + req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) { + fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) { + var save = function() { + dir.getFile(name, create_if_not_found, abortable(function(file) { + file.createWriter(abortable(function(writer) { + writer.onwriteend = function(event) { + target_view.location.href = file.toURL(); + filesaver.readyState = filesaver.DONE; + dispatch(filesaver, "writeend", event); + revoke(file); + }; + writer.onerror = function() { + var error = writer.error; + if (error.code !== error.ABORT_ERR) { + fs_error(); + } + }; + "writestart progress write abort".split(" ").forEach(function(event) { + writer["on" + event] = filesaver["on" + event]; + }); + writer.write(blob); + filesaver.abort = function() { + writer.abort(); + filesaver.readyState = filesaver.DONE; + }; + filesaver.readyState = filesaver.WRITING; + }), fs_error); + }), fs_error); + }; + dir.getFile(name, {create: false}, abortable(function(file) { + // delete file if it already exists + file.remove(); + save(); + }), abortable(function(ex) { + if (ex.code === ex.NOT_FOUND_ERR) { + save(); + } else { + fs_error(); + } + })); + }), fs_error); + }), fs_error); + } + , FS_proto = FileSaver.prototype + , saveAs = function(blob, name, no_auto_bom) { + return new FileSaver(blob, name, no_auto_bom); + } + ; + // IE 10+ (native saveAs) + if (typeof navigator !== "undefined" && navigator.msSaveOrOpenBlob) { + return function(blob, name, no_auto_bom) { + if (!no_auto_bom) { + blob = auto_bom(blob); + } + return navigator.msSaveOrOpenBlob(blob, name || "download"); + }; + } + + FS_proto.abort = function() { + var filesaver = this; + filesaver.readyState = filesaver.DONE; + dispatch(filesaver, "abort"); + }; + FS_proto.readyState = FS_proto.INIT = 0; + FS_proto.WRITING = 1; + FS_proto.DONE = 2; + + FS_proto.error = + FS_proto.onwritestart = + FS_proto.onprogress = + FS_proto.onwrite = + FS_proto.onabort = + FS_proto.onerror = + FS_proto.onwriteend = + null; + + return saveAs; +}( + typeof self !== "undefined" && self + || typeof window !== "undefined" && window + || this.content +)); +// `self` is undefined in Firefox for Android content script context +// while `this` is nsIContentFrameMessageManager +// with an attribute `content` that corresponds to the window + +if (typeof module !== "undefined" && module.exports) { + module.exports.saveAs = saveAs; +} else if ((typeof define !== "undefined" && define !== null) && (define.amd != null)) { + define([], function() { + return saveAs; + }); +} |