2 * (C) Copyright 2004 Shawn Betts
3 * (C) Copyright 2007-2008 Jeremy Maitin-Shepard
5 * Portions of this file were derived from the Venkman JavaScript debugger,
6 * (C) Copyright 1998 Netscape Communications Corporation.
8 * Use, modification, and distribution are subject to the terms specified in the
12 const PERM_IWOTH = 00002; /* write permission, others */
13 const PERM_IWGRP = 00020; /* write permission, group */
15 const MODE_RDONLY = 0x01;
16 const MODE_WRONLY = 0x02;
17 const MODE_RDWR = 0x04;
18 const MODE_CREATE = 0x08;
19 const MODE_APPEND = 0x10;
20 const MODE_TRUNCATE = 0x20;
21 const MODE_SYNC = 0x40;
22 const MODE_EXCL = 0x80;
23 const MODE_OUTPUT = MODE_WRONLY | MODE_CREATE | MODE_TRUNCATE;
24 const MODE_OUTPUT_APPEND = MODE_WRONLY | MODE_CREATE | MODE_APPEND;
25 const MODE_INPUT = MODE_RDONLY;
27 define_keywords("$charset");
28 function read_text_file(file)
30 keywords(arguments, $charset = "UTF-8");
32 var ifstream = null, icstream = null;
35 ifstream = Cc["@mozilla.org/network/file-input-stream;1"].createInstance(Ci.nsIFileInputStream);
36 icstream = Cc["@mozilla.org/intl/converter-input-stream;1"].createInstance(Ci.nsIConverterInputStream);
38 ifstream.init(file, -1, 0, 0);
39 const replacementChar = Ci.nsIConverterInputStream.DEFAULT_REPLACEMENT_CHARACTER;
40 icstream.init(ifstream, arguments.$charset, 4096, replacementChar); // 4096 bytes buffering
44 while (icstream.readString(4096, str) != 0)
55 define_keywords("$mode", "$perms", "$charset");
56 function write_text_file(file, buf)
58 keywords(arguments, $charset = "UTF-8", $perms = 0644, $mode = MODE_WRONLY | MODE_CREATE | MODE_TRUNCATE);
60 var ofstream, ocstream;
62 ofstream = Cc["@mozilla.org/network/file-output-stream;1"].createInstance(Ci.nsIFileOutputStream);
63 ocstream = Cc["@mozilla.org/intl/converter-output-stream;1"].createInstance(Ci.nsIConverterOutputStream);
65 ofstream.init(file, arguments.$mode, arguments.$perms, 0);
66 ocstream.init(ofstream, arguments.$charset, 0, 0x0000);
67 ocstream.writeString(buf);
76 define_keywords("$mode", "$perms");
77 function write_binary_file(file, buf)
79 keywords(arguments, $perms = 0644, $mode = MODE_WRONLY | MODE_CREATE | MODE_TRUNCATE);
80 var stream = null, bstream = null;
83 stream = Cc["@mozilla.org/network/file-output-stream;1"].createInstance(Ci.nsIFileOutputStream);
84 stream.init(file, arguments.$mode, arguments.$perms, 0);
86 bstream = binary_output_stream(stream);
87 bstream.writeBytes(buf, buf.length);
96 function get_file(path) {
97 var f = Cc["@mozilla.org/file/local;1"].createInstance(Ci.nsILocalFile);
102 var thread_manager = Cc["@mozilla.org/thread-manager;1"].getService(Ci.nsIThreadManager);
104 function input_stream_async_wait(stream, callback, requested_count) {
105 stream = stream.QueryInterface(Ci.nsIAsyncInputStream);
106 var flags = (requested_count === false) ? Ci.nsIAsyncInputStream.WAIT_CLOSURE_ONLY : 0;
107 if (requested_count == null || requested_count == false)
109 stream.asyncWait({onInputStreamReady: callback}, flags, requested_count, thread_manager.mainThread);
112 function output_stream_async_wait(stream, callback, requested_count) {
113 stream = stream.QueryInterface(Ci.nsIAsyncOutputStream);
114 var flags = (requested_count === false) ? Ci.nsIAsyncOutputStream.WAIT_CLOSURE_ONLY : 0;
115 if (requested_count == null || requested_count == false)
117 stream.asyncWait({onOutputStreamReady: callback}, flags, requested_count, thread_manager.mainThread);
120 function binary_output_stream(stream) {
121 var s = Cc["@mozilla.org/binaryoutputstream;1"].createInstance(Ci.nsIBinaryOutputStream);
122 s.setOutputStream(stream);
126 function binary_input_stream(stream) {
127 var s = Cc["@mozilla.org/binaryinputstream;1"].createInstance(Ci.nsIBinaryInputStream);
128 s.setInputStream(stream);
132 // callback is called with a single argument, either true if the write succeeded, or false otherwise
133 function async_binary_write(stream, data, callback) {
134 function attempt_write() {
137 if (data.length == 0) {
142 var len = stream.write(data, data.length);
145 data = data.substring(len);
148 catch (e if (e instanceof Components.Exception) && e.result == Cr.NS_BASE_STREAM_WOULD_BLOCK) {}
153 output_stream_async_wait(stream, attempt_write, data.length);
159 * The `str' parameter should be a normal JavaScript string whose char codes specify Unicode code points.
160 * The return value is a byte string (all char codes are from 0 to 255) equal to the `str' encoded in the specified charset.
161 * If charset is not specified, it defaults to UTF-8.
163 function encode_string(str, charset) {
164 var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].createInstance(Ci.nsIScriptableUnicodeConverter);
165 converter.charset = charset || "UTF-8";
166 var output = converter.ConvertFromUnicode(str);
167 output += converter.Finish();
174 * The `bstr' parameter should be a byte string (all char codes are from 0 to 255).
175 * The return value is a normal JavaScript unicode sring equal to `bstr' decoded using the specified charset.
176 * If charset is not specified, it defaults to UTF-8.
178 function decode_string(bstr, charset) {
179 var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].createInstance(Ci.nsIScriptableUnicodeConverter);
180 converter.charset = charset || "UTF-8";
181 return converter.ConvertToUnicode(bstr);
184 function async_binary_string_writer(bstr) {
185 return function (stream) {
186 async_binary_write(stream, bstr);
190 function async_binary_reader(callback) {
191 return function (stream) {
192 var bstream = binary_input_stream(stream);
195 let avail = stream.available();
197 callback(bstream.readBytes(avail));
199 input_stream_async_wait(stream, handler);
204 input_stream_async_wait(stream, handler);
208 function string_input_stream(data) {
209 var string_stream = Cc["@mozilla.org/io/string-input-stream;1"].createInstance(Ci.nsIStringInputStream);
210 string_stream.data = data;
211 return string_stream;
214 function mime_input_stream(stream, headers) {
215 var mime_stream = Cc["@mozilla.org/network/mime-input-stream;1"].createInstance(Ci.nsIMIMEInputStream);
217 for each (let [name,value] in headers) {
218 mime_stream.addHeader(name,value);
221 mime_stream.addContentLength = true;
222 mime_stream.setData(stream);