wenzelm@34201
|
1 |
/* Title: Pure/System/standard_system.scala
|
wenzelm@34201
|
2 |
Author: Makarius
|
wenzelm@34201
|
3 |
|
wenzelm@34201
|
4 |
Standard system operations, with basic Cygwin/Posix compatibility.
|
wenzelm@34201
|
5 |
*/
|
wenzelm@34201
|
6 |
|
wenzelm@34201
|
7 |
package isabelle
|
wenzelm@34201
|
8 |
|
wenzelm@44400
|
9 |
import java.lang.System
|
wenzelm@40025
|
10 |
import java.util.zip.{ZipEntry, ZipInputStream}
|
wenzelm@34201
|
11 |
import java.util.regex.Pattern
|
wenzelm@34201
|
12 |
import java.util.Locale
|
wenzelm@39970
|
13 |
import java.net.URL
|
wenzelm@39970
|
14 |
import java.io.{BufferedWriter, OutputStreamWriter, FileOutputStream, BufferedOutputStream,
|
wenzelm@39842
|
15 |
BufferedInputStream, InputStream, FileInputStream, BufferedReader, InputStreamReader,
|
wenzelm@34298
|
16 |
File, FileFilter, IOException}
|
wenzelm@44396
|
17 |
import java.nio.charset.Charset
|
wenzelm@34201
|
18 |
|
wenzelm@36035
|
19 |
import scala.io.{Source, Codec}
|
wenzelm@34201
|
20 |
import scala.util.matching.Regex
|
wenzelm@34201
|
21 |
import scala.collection.mutable
|
wenzelm@34201
|
22 |
|
wenzelm@34201
|
23 |
|
wenzelm@34201
|
24 |
object Standard_System
|
wenzelm@34201
|
25 |
{
|
wenzelm@38562
|
26 |
/* UTF-8 charset */
|
wenzelm@38562
|
27 |
|
wenzelm@44396
|
28 |
val charset_name: String = "UTF-8"
|
wenzelm@44396
|
29 |
val charset: Charset = Charset.forName(charset_name)
|
wenzelm@36039
|
30 |
def codec(): Codec = Codec(charset)
|
wenzelm@34201
|
31 |
|
wenzelm@38562
|
32 |
def string_bytes(s: String): Array[Byte] = s.getBytes(charset)
|
wenzelm@38562
|
33 |
|
wenzelm@34201
|
34 |
|
wenzelm@34201
|
35 |
/* permissive UTF-8 decoding */
|
wenzelm@34201
|
36 |
|
wenzelm@34201
|
37 |
// see also http://en.wikipedia.org/wiki/UTF-8#Description
|
wenzelm@34201
|
38 |
// overlong encodings enable byte-stuffing
|
wenzelm@34201
|
39 |
|
wenzelm@34201
|
40 |
def decode_permissive_utf8(text: CharSequence): String =
|
wenzelm@34201
|
41 |
{
|
wenzelm@34201
|
42 |
val buf = new java.lang.StringBuilder(text.length)
|
wenzelm@34201
|
43 |
var code = -1
|
wenzelm@34201
|
44 |
var rest = 0
|
wenzelm@34201
|
45 |
def flush()
|
wenzelm@34201
|
46 |
{
|
wenzelm@34201
|
47 |
if (code != -1) {
|
wenzelm@34201
|
48 |
if (rest == 0 && Character.isValidCodePoint(code))
|
wenzelm@34201
|
49 |
buf.appendCodePoint(code)
|
wenzelm@34201
|
50 |
else buf.append('\uFFFD')
|
wenzelm@34201
|
51 |
code = -1
|
wenzelm@34201
|
52 |
rest = 0
|
wenzelm@34201
|
53 |
}
|
wenzelm@34201
|
54 |
}
|
wenzelm@34201
|
55 |
def init(x: Int, n: Int)
|
wenzelm@34201
|
56 |
{
|
wenzelm@34201
|
57 |
flush()
|
wenzelm@34201
|
58 |
code = x
|
wenzelm@34201
|
59 |
rest = n
|
wenzelm@34201
|
60 |
}
|
wenzelm@34201
|
61 |
def push(x: Int)
|
wenzelm@34201
|
62 |
{
|
wenzelm@34201
|
63 |
if (rest <= 0) init(x, -1)
|
wenzelm@34201
|
64 |
else {
|
wenzelm@34201
|
65 |
code <<= 6
|
wenzelm@34201
|
66 |
code += x
|
wenzelm@34201
|
67 |
rest -= 1
|
wenzelm@34201
|
68 |
}
|
wenzelm@34201
|
69 |
}
|
wenzelm@34201
|
70 |
for (i <- 0 until text.length) {
|
wenzelm@34201
|
71 |
val c = text.charAt(i)
|
wenzelm@34201
|
72 |
if (c < 128) { flush(); buf.append(c) }
|
wenzelm@34201
|
73 |
else if ((c & 0xC0) == 0x80) push(c & 0x3F)
|
wenzelm@34201
|
74 |
else if ((c & 0xE0) == 0xC0) init(c & 0x1F, 1)
|
wenzelm@34201
|
75 |
else if ((c & 0xF0) == 0xE0) init(c & 0x0F, 2)
|
wenzelm@34201
|
76 |
else if ((c & 0xF8) == 0xF0) init(c & 0x07, 3)
|
wenzelm@34201
|
77 |
}
|
wenzelm@34201
|
78 |
flush()
|
wenzelm@34201
|
79 |
buf.toString
|
wenzelm@34201
|
80 |
}
|
wenzelm@34201
|
81 |
|
wenzelm@34201
|
82 |
|
wenzelm@34201
|
83 |
/* basic file operations */
|
wenzelm@34201
|
84 |
|
wenzelm@39842
|
85 |
def slurp(reader: BufferedReader): String =
|
wenzelm@34201
|
86 |
{
|
wenzelm@39842
|
87 |
val output = new StringBuilder(100)
|
wenzelm@39842
|
88 |
var c = -1
|
wenzelm@39842
|
89 |
while ({ c = reader.read; c != -1 }) output += c.toChar
|
wenzelm@39842
|
90 |
reader.close
|
wenzelm@39842
|
91 |
output.toString
|
wenzelm@34201
|
92 |
}
|
wenzelm@34201
|
93 |
|
wenzelm@39842
|
94 |
def slurp(stream: InputStream): String =
|
wenzelm@39842
|
95 |
slurp(new BufferedReader(new InputStreamReader(stream, charset)))
|
wenzelm@39842
|
96 |
|
wenzelm@39842
|
97 |
def read_file(file: File): String = slurp(new FileInputStream(file))
|
wenzelm@34201
|
98 |
|
wenzelm@34201
|
99 |
def write_file(file: File, text: CharSequence)
|
wenzelm@34201
|
100 |
{
|
wenzelm@44396
|
101 |
val writer =
|
wenzelm@44396
|
102 |
new BufferedWriter(new OutputStreamWriter(new FileOutputStream(file), charset))
|
wenzelm@34201
|
103 |
try { writer.append(text) }
|
wenzelm@34201
|
104 |
finally { writer.close }
|
wenzelm@34201
|
105 |
}
|
wenzelm@34201
|
106 |
|
wenzelm@39842
|
107 |
def with_tmp_file[A](prefix: String)(body: File => A): A =
|
wenzelm@39842
|
108 |
{
|
wenzelm@39842
|
109 |
val file = File.createTempFile(prefix, null)
|
wenzelm@39846
|
110 |
file.deleteOnExit
|
wenzelm@39842
|
111 |
try { body(file) } finally { file.delete }
|
wenzelm@39842
|
112 |
}
|
wenzelm@39842
|
113 |
|
wenzelm@34300
|
114 |
// FIXME handle (potentially cyclic) directory graph
|
wenzelm@34298
|
115 |
def find_files(start: File, ok: File => Boolean): List[File] =
|
wenzelm@34298
|
116 |
{
|
wenzelm@34298
|
117 |
val files = new mutable.ListBuffer[File]
|
wenzelm@34298
|
118 |
val filter = new FileFilter { def accept(entry: File) = entry.isDirectory || ok(entry) }
|
wenzelm@34298
|
119 |
def find_entry(entry: File)
|
wenzelm@34298
|
120 |
{
|
wenzelm@34298
|
121 |
if (ok(entry)) files += entry
|
wenzelm@34298
|
122 |
if (entry.isDirectory) entry.listFiles(filter).foreach(find_entry)
|
wenzelm@34298
|
123 |
}
|
wenzelm@34298
|
124 |
find_entry(start)
|
wenzelm@34298
|
125 |
files.toList
|
wenzelm@34298
|
126 |
}
|
wenzelm@34298
|
127 |
|
wenzelm@34201
|
128 |
|
wenzelm@34201
|
129 |
/* shell processes */
|
wenzelm@34201
|
130 |
|
wenzelm@34222
|
131 |
def raw_execute(cwd: File, env: Map[String, String], redirect: Boolean, args: String*): Process =
|
wenzelm@34201
|
132 |
{
|
wenzelm@34201
|
133 |
val cmdline = new java.util.LinkedList[String]
|
wenzelm@34201
|
134 |
for (s <- args) cmdline.add(s)
|
wenzelm@34201
|
135 |
|
wenzelm@34201
|
136 |
val proc = new ProcessBuilder(cmdline)
|
wenzelm@34222
|
137 |
if (cwd != null) proc.directory(cwd)
|
wenzelm@34202
|
138 |
if (env != null) {
|
wenzelm@34202
|
139 |
proc.environment.clear
|
wenzelm@34202
|
140 |
for ((x, y) <- env) proc.environment.put(x, y)
|
wenzelm@34202
|
141 |
}
|
wenzelm@34201
|
142 |
proc.redirectErrorStream(redirect)
|
wenzelm@39791
|
143 |
proc.start
|
wenzelm@34201
|
144 |
}
|
wenzelm@34201
|
145 |
|
wenzelm@34201
|
146 |
def process_output(proc: Process): (String, Int) =
|
wenzelm@34201
|
147 |
{
|
wenzelm@34201
|
148 |
proc.getOutputStream.close
|
wenzelm@39842
|
149 |
val output = slurp(proc.getInputStream)
|
wenzelm@34201
|
150 |
val rc =
|
wenzelm@34201
|
151 |
try { proc.waitFor }
|
wenzelm@34201
|
152 |
finally {
|
wenzelm@34201
|
153 |
proc.getInputStream.close
|
wenzelm@34201
|
154 |
proc.getErrorStream.close
|
wenzelm@34201
|
155 |
proc.destroy
|
wenzelm@34201
|
156 |
Thread.interrupted
|
wenzelm@34201
|
157 |
}
|
wenzelm@34201
|
158 |
(output, rc)
|
wenzelm@34201
|
159 |
}
|
wenzelm@34258
|
160 |
|
wenzelm@39791
|
161 |
def raw_exec(cwd: File, env: Map[String, String], redirect: Boolean, args: String*)
|
wenzelm@39791
|
162 |
: (String, Int) = process_output(raw_execute(cwd, env, redirect, args: _*))
|
wenzelm@39970
|
163 |
|
wenzelm@39970
|
164 |
|
wenzelm@40025
|
165 |
/* unpack zip archive -- platform file-system */
|
wenzelm@40025
|
166 |
|
wenzelm@40025
|
167 |
def unzip(url: URL, root: File)
|
wenzelm@40025
|
168 |
{
|
wenzelm@40025
|
169 |
import scala.collection.JavaConversions._
|
wenzelm@40025
|
170 |
|
wenzelm@40025
|
171 |
val buffer = new Array[Byte](4096)
|
wenzelm@40025
|
172 |
|
wenzelm@40025
|
173 |
val zip_stream = new ZipInputStream(new BufferedInputStream(url.openStream))
|
wenzelm@40025
|
174 |
var entry: ZipEntry = null
|
wenzelm@40025
|
175 |
try {
|
wenzelm@40025
|
176 |
while ({ entry = zip_stream.getNextEntry; entry != null }) {
|
wenzelm@40025
|
177 |
val file = new File(root, entry.getName.replace('/', File.separatorChar))
|
wenzelm@40025
|
178 |
val dir = file.getParentFile
|
wenzelm@40025
|
179 |
if (dir != null && !dir.isDirectory && !dir.mkdirs)
|
wenzelm@40025
|
180 |
error("Failed to create directory: " + dir)
|
wenzelm@40025
|
181 |
|
wenzelm@40025
|
182 |
var len = 0
|
wenzelm@40025
|
183 |
val out_stream = new BufferedOutputStream(new FileOutputStream(file))
|
wenzelm@40025
|
184 |
try {
|
wenzelm@40025
|
185 |
while ({ len = zip_stream.read(buffer); len != -1 })
|
wenzelm@40025
|
186 |
out_stream.write(buffer, 0, len)
|
wenzelm@40025
|
187 |
}
|
wenzelm@40025
|
188 |
finally { out_stream.close }
|
wenzelm@40025
|
189 |
}
|
wenzelm@40025
|
190 |
}
|
wenzelm@40025
|
191 |
finally { zip_stream.close }
|
wenzelm@40025
|
192 |
}
|
wenzelm@40025
|
193 |
|
wenzelm@40025
|
194 |
|
wenzelm@40025
|
195 |
/* unpack tar archive -- POSIX file-system */
|
wenzelm@39970
|
196 |
|
wenzelm@39973
|
197 |
def posix_untar(url: URL, root: File, gunzip: Boolean = false,
|
wenzelm@39974
|
198 |
tar: String = "tar", gzip: String = "", progress: Int => Unit = _ => ()): String =
|
wenzelm@39970
|
199 |
{
|
wenzelm@39973
|
200 |
if (!root.isDirectory && !root.mkdirs)
|
wenzelm@39973
|
201 |
error("Failed to create root directory: " + root)
|
wenzelm@39970
|
202 |
|
wenzelm@39970
|
203 |
val connection = url.openConnection
|
wenzelm@39970
|
204 |
|
wenzelm@39970
|
205 |
val length = connection.getContentLength.toLong
|
wenzelm@39970
|
206 |
require(length >= 0L)
|
wenzelm@39970
|
207 |
|
wenzelm@39973
|
208 |
val stream = new BufferedInputStream(connection.getInputStream)
|
wenzelm@39970
|
209 |
val progress_stream = new InputStream {
|
wenzelm@39970
|
210 |
private val total = length max 1L
|
wenzelm@39970
|
211 |
private var index = 0L
|
wenzelm@39970
|
212 |
private var percentage = 0L
|
wenzelm@39970
|
213 |
override def read(): Int =
|
wenzelm@39970
|
214 |
{
|
wenzelm@39973
|
215 |
val c = stream.read
|
wenzelm@39970
|
216 |
if (c != -1) {
|
wenzelm@39970
|
217 |
index += 100
|
wenzelm@39970
|
218 |
val p = index / total
|
wenzelm@39970
|
219 |
if (percentage != p) { percentage = p; progress(percentage.toInt) }
|
wenzelm@39970
|
220 |
}
|
wenzelm@39970
|
221 |
c
|
wenzelm@39970
|
222 |
}
|
wenzelm@39973
|
223 |
override def available(): Int = stream.available
|
wenzelm@39973
|
224 |
override def close() { stream.close }
|
wenzelm@39970
|
225 |
}
|
wenzelm@39970
|
226 |
|
wenzelm@39974
|
227 |
val cmdline =
|
wenzelm@39974
|
228 |
List(tar, "-o", "-x", "-f-") :::
|
wenzelm@39974
|
229 |
(if (!gunzip) Nil else if (gzip == "") List("-z") else List("-I", gzip))
|
wenzelm@39974
|
230 |
|
wenzelm@39974
|
231 |
val proc = raw_execute(root, null, false, cmdline:_*)
|
wenzelm@39970
|
232 |
val stdout = Simple_Thread.future("tar_stdout") { slurp(proc.getInputStream) }
|
wenzelm@39970
|
233 |
val stderr = Simple_Thread.future("tar_stderr") { slurp(proc.getErrorStream) }
|
wenzelm@39970
|
234 |
val stdin = new BufferedOutputStream(proc.getOutputStream)
|
wenzelm@39970
|
235 |
|
wenzelm@39970
|
236 |
try {
|
wenzelm@39970
|
237 |
var c = -1
|
wenzelm@39971
|
238 |
val io_err =
|
wenzelm@39973
|
239 |
try { while ({ c = progress_stream.read; c != -1 }) stdin.write(c); false }
|
wenzelm@39971
|
240 |
catch { case e: IOException => true }
|
wenzelm@39970
|
241 |
stdin.close
|
wenzelm@39970
|
242 |
|
wenzelm@39970
|
243 |
val rc = try { proc.waitFor } finally { Thread.interrupted }
|
wenzelm@39971
|
244 |
if (io_err || rc != 0) error(stderr.join.trim) else stdout.join
|
wenzelm@39970
|
245 |
}
|
wenzelm@39970
|
246 |
finally {
|
wenzelm@39973
|
247 |
progress_stream.close
|
wenzelm@39970
|
248 |
stdin.close
|
wenzelm@39970
|
249 |
proc.destroy
|
wenzelm@39970
|
250 |
}
|
wenzelm@39970
|
251 |
}
|
wenzelm@34201
|
252 |
}
|
wenzelm@34201
|
253 |
|
wenzelm@34201
|
254 |
|
wenzelm@34201
|
255 |
class Standard_System
|
wenzelm@34201
|
256 |
{
|
wenzelm@34201
|
257 |
val platform_root = if (Platform.is_windows) Cygwin.check_root() else "/"
|
wenzelm@34201
|
258 |
override def toString = platform_root
|
wenzelm@34201
|
259 |
|
wenzelm@34201
|
260 |
|
wenzelm@34201
|
261 |
/* jvm_path */
|
wenzelm@34201
|
262 |
|
wenzelm@34201
|
263 |
private val Cygdrive = new Regex("/cygdrive/([a-zA-Z])($|/.*)")
|
wenzelm@36144
|
264 |
private val Named_Root = new Regex("//+([^/]*)(.*)")
|
wenzelm@34201
|
265 |
|
wenzelm@34201
|
266 |
def jvm_path(posix_path: String): String =
|
wenzelm@34201
|
267 |
if (Platform.is_windows) {
|
wenzelm@34201
|
268 |
val result_path = new StringBuilder
|
wenzelm@34201
|
269 |
val rest =
|
wenzelm@34201
|
270 |
posix_path match {
|
wenzelm@34201
|
271 |
case Cygdrive(drive, rest) =>
|
wenzelm@34201
|
272 |
result_path ++= (drive + ":" + File.separator)
|
wenzelm@34201
|
273 |
rest
|
wenzelm@36144
|
274 |
case Named_Root(root, rest) =>
|
wenzelm@36144
|
275 |
result_path ++= File.separator
|
wenzelm@36144
|
276 |
result_path ++= File.separator
|
wenzelm@36144
|
277 |
result_path ++= root
|
wenzelm@36144
|
278 |
rest
|
wenzelm@34201
|
279 |
case path if path.startsWith("/") =>
|
wenzelm@34201
|
280 |
result_path ++= platform_root
|
wenzelm@34201
|
281 |
path
|
wenzelm@34201
|
282 |
case path => path
|
wenzelm@34201
|
283 |
}
|
wenzelm@34201
|
284 |
for (p <- rest.split("/") if p != "") {
|
wenzelm@34201
|
285 |
val len = result_path.length
|
wenzelm@34201
|
286 |
if (len > 0 && result_path(len - 1) != File.separatorChar)
|
wenzelm@34201
|
287 |
result_path += File.separatorChar
|
wenzelm@34201
|
288 |
result_path ++= p
|
wenzelm@34201
|
289 |
}
|
wenzelm@34201
|
290 |
result_path.toString
|
wenzelm@34201
|
291 |
}
|
wenzelm@34201
|
292 |
else posix_path
|
wenzelm@34201
|
293 |
|
wenzelm@34201
|
294 |
|
wenzelm@34201
|
295 |
/* posix_path */
|
wenzelm@34201
|
296 |
|
wenzelm@34201
|
297 |
private val Platform_Root = new Regex("(?i)" +
|
wenzelm@34201
|
298 |
Pattern.quote(platform_root) + """(?:\\+|\z)(.*)""")
|
wenzelm@34201
|
299 |
|
wenzelm@34201
|
300 |
private val Drive = new Regex("""([a-zA-Z]):\\*(.*)""")
|
wenzelm@34201
|
301 |
|
wenzelm@34201
|
302 |
def posix_path(jvm_path: String): String =
|
wenzelm@34201
|
303 |
if (Platform.is_windows) {
|
wenzelm@34201
|
304 |
jvm_path.replace('/', '\\') match {
|
wenzelm@34201
|
305 |
case Platform_Root(rest) => "/" + rest.replace('\\', '/')
|
wenzelm@34201
|
306 |
case Drive(letter, rest) =>
|
wenzelm@34201
|
307 |
"/cygdrive/" + letter.toLowerCase(Locale.ENGLISH) +
|
wenzelm@34201
|
308 |
(if (rest == "") "" else "/" + rest.replace('\\', '/'))
|
wenzelm@34201
|
309 |
case path => path.replace('\\', '/')
|
wenzelm@34201
|
310 |
}
|
wenzelm@34201
|
311 |
}
|
wenzelm@34201
|
312 |
else jvm_path
|
wenzelm@36193
|
313 |
|
wenzelm@36193
|
314 |
|
wenzelm@36193
|
315 |
/* this_java executable */
|
wenzelm@36193
|
316 |
|
wenzelm@36193
|
317 |
def this_java(): String =
|
wenzelm@36193
|
318 |
{
|
wenzelm@36193
|
319 |
val java_home = System.getProperty("java.home")
|
wenzelm@36193
|
320 |
val java_exe =
|
wenzelm@36193
|
321 |
if (Platform.is_windows) new File(java_home + "\\bin\\java.exe")
|
wenzelm@36193
|
322 |
else new File(java_home + "/bin/java")
|
wenzelm@36193
|
323 |
if (!java_exe.isFile) error("Expected this Java executable: " + java_exe.toString)
|
wenzelm@36193
|
324 |
posix_path(java_exe.getAbsolutePath)
|
wenzelm@36193
|
325 |
}
|
wenzelm@34201
|
326 |
}
|