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1
7
8 package java.lang;
9
10 import java.io.*;
11
12
19
20 final class ProcessImpl extends Process  {
21
22 static Process start(String cmdarray[],
24 java.util.Map <String ,String > environment,
25 String dir,
26 boolean redirectErrorStream)
27 throws IOException
28 {
29 String envblock = ProcessEnvironment.toEnvironmentBlock(environment);
30 return new ProcessImpl (cmdarray, envblock, dir, redirectErrorStream);
31 }
32
33 private long handle = 0;
34 private FileDescriptor stdin_fd;
35 private FileDescriptor stdout_fd;
36 private FileDescriptor stderr_fd;
37 private OutputStream stdin_stream;
38 private InputStream stdout_stream;
39 private InputStream stderr_stream;
40
41 private ProcessImpl(String cmd[],
42 String envblock,
43 String path,
44 boolean redirectErrorStream)
45 throws IOException
46 {
47 cmd[0] = new File(cmd[0]).getPath();
49
50 StringBuilder cmdbuf = new StringBuilder (80);
51 for (int i = 0; i < cmd.length; i++) {
52 if (i > 0) {
53 cmdbuf.append(' ');
54 }
55 String s = cmd[i];
56 if (s.indexOf(' ') >= 0 || s.indexOf('\t') >= 0) {
57 if (s.charAt(0) != '"') {
58 cmdbuf.append('"');
59 cmdbuf.append(s);
60 if (s.endsWith("\\")) {
61 cmdbuf.append("\\");
62 }
63 cmdbuf.append('"');
64 } else if (s.endsWith("\"")) {
65
66 cmdbuf.append(s);
67 } else {
68
69 throw new IllegalArgumentException ();
70 }
71 } else {
72 cmdbuf.append(s);
73 }
74 }
75 String cmdstr = cmdbuf.toString();
76
77 stdin_fd = new FileDescriptor();
78 stdout_fd = new FileDescriptor();
79 stderr_fd = new FileDescriptor();
80
81 handle = create(cmdstr, envblock, path, redirectErrorStream,
82 stdin_fd, stdout_fd, stderr_fd);
83
84 java.security.AccessController.doPrivileged(
85 new java.security.PrivilegedAction () {
86 public Object run() {
87 stdin_stream =
88 new BufferedOutputStream(new FileOutputStream(stdin_fd));
89 stdout_stream =
90 new BufferedInputStream(new FileInputStream(stdout_fd));
91 stderr_stream =
92 new FileInputStream(stderr_fd);
93 return null;
94 }
95 });
96 }
97
98 public OutputStream getOutputStream() {
99 return stdin_stream;
100 }
101
102 public InputStream getInputStream() {
103 return stdout_stream;
104 }
105
106 public InputStream getErrorStream() {
107 return stderr_stream;
108 }
109
110 public void finalize() {
111 close();
112 }
113
114 public native int exitValue();
115 public native int waitFor();
116 public native void destroy();
117
118 private native long create(String cmdstr,
119 String envblock,
120 String dir,
121 boolean redirectErrorStream,
122 FileDescriptor in_fd,
123 FileDescriptor out_fd,
124 FileDescriptor err_fd);
125 private native void close();
126 }
127 |
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