1 |
dashley |
71 |
/* $Header$ */ |
2 |
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/* |
3 |
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* tclIOCmd.c -- |
4 |
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* |
5 |
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* Contains the definitions of most of the Tcl commands relating to IO. |
6 |
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* |
7 |
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* Copyright (c) 1995-1997 Sun Microsystems, Inc. |
8 |
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* |
9 |
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* See the file "license.terms" for information on usage and redistribution |
10 |
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
11 |
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* |
12 |
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* RCS: @(#) $Id: tcliocmd.c,v 1.1.1.1 2001/06/13 04:42:14 dtashley Exp $ |
13 |
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*/ |
14 |
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15 |
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#include "tclInt.h" |
16 |
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#include "tclPort.h" |
17 |
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18 |
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/* |
19 |
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* Callback structure for accept callback in a TCP server. |
20 |
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*/ |
21 |
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22 |
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typedef struct AcceptCallback { |
23 |
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char *script; /* Script to invoke. */ |
24 |
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Tcl_Interp *interp; /* Interpreter in which to run it. */ |
25 |
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} AcceptCallback; |
26 |
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|
27 |
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/* |
28 |
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* Static functions for this file: |
29 |
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*/ |
30 |
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31 |
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static void AcceptCallbackProc _ANSI_ARGS_((ClientData callbackData, |
32 |
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Tcl_Channel chan, char *address, int port)); |
33 |
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static void RegisterTcpServerInterpCleanup _ANSI_ARGS_((Tcl_Interp *interp, |
34 |
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AcceptCallback *acceptCallbackPtr)); |
35 |
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static void TcpAcceptCallbacksDeleteProc _ANSI_ARGS_(( |
36 |
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ClientData clientData, Tcl_Interp *interp)); |
37 |
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static void TcpServerCloseProc _ANSI_ARGS_((ClientData callbackData)); |
38 |
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static void UnregisterTcpServerInterpCleanupProc _ANSI_ARGS_(( |
39 |
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Tcl_Interp *interp, AcceptCallback *acceptCallbackPtr)); |
40 |
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41 |
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/* |
42 |
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*---------------------------------------------------------------------- |
43 |
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* |
44 |
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* Tcl_PutsObjCmd -- |
45 |
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* |
46 |
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* This procedure is invoked to process the "puts" Tcl command. |
47 |
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* See the user documentation for details on what it does. |
48 |
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* |
49 |
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* Results: |
50 |
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* A standard Tcl result. |
51 |
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* |
52 |
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* Side effects: |
53 |
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* Produces output on a channel. |
54 |
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* |
55 |
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*---------------------------------------------------------------------- |
56 |
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*/ |
57 |
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|
58 |
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/* ARGSUSED */ |
59 |
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int |
60 |
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Tcl_PutsObjCmd(dummy, interp, objc, objv) |
61 |
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ClientData dummy; /* Not used. */ |
62 |
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Tcl_Interp *interp; /* Current interpreter. */ |
63 |
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int objc; /* Number of arguments. */ |
64 |
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Tcl_Obj *CONST objv[]; /* Argument objects. */ |
65 |
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{ |
66 |
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Tcl_Channel chan; /* The channel to puts on. */ |
67 |
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int i; /* Counter. */ |
68 |
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int newline; /* Add a newline at end? */ |
69 |
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char *channelId; /* Name of channel for puts. */ |
70 |
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int result; /* Result of puts operation. */ |
71 |
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int mode; /* Mode in which channel is opened. */ |
72 |
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char *arg; |
73 |
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int length; |
74 |
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|
75 |
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i = 1; |
76 |
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newline = 1; |
77 |
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if ((objc >= 2) && (strcmp(Tcl_GetString(objv[1]), "-nonewline") == 0)) { |
78 |
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newline = 0; |
79 |
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i++; |
80 |
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} |
81 |
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if ((i < (objc-3)) || (i >= objc)) { |
82 |
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Tcl_WrongNumArgs(interp, 1, objv, "?-nonewline? ?channelId? string"); |
83 |
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return TCL_ERROR; |
84 |
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} |
85 |
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|
86 |
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/* |
87 |
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* The code below provides backwards compatibility with an old |
88 |
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* form of the command that is no longer recommended or documented. |
89 |
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*/ |
90 |
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|
91 |
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if (i == (objc-3)) { |
92 |
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arg = Tcl_GetStringFromObj(objv[i + 2], &length); |
93 |
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if (strncmp(arg, "nonewline", (size_t) length) != 0) { |
94 |
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Tcl_AppendResult(interp, "bad argument \"", arg, |
95 |
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"\": should be \"nonewline\"", (char *) NULL); |
96 |
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return TCL_ERROR; |
97 |
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} |
98 |
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newline = 0; |
99 |
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} |
100 |
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if (i == (objc - 1)) { |
101 |
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channelId = "stdout"; |
102 |
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} else { |
103 |
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channelId = Tcl_GetString(objv[i]); |
104 |
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i++; |
105 |
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} |
106 |
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chan = Tcl_GetChannel(interp, channelId, &mode); |
107 |
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if (chan == (Tcl_Channel) NULL) { |
108 |
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return TCL_ERROR; |
109 |
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} |
110 |
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if ((mode & TCL_WRITABLE) == 0) { |
111 |
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Tcl_AppendResult(interp, "channel \"", channelId, |
112 |
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"\" wasn't opened for writing", (char *) NULL); |
113 |
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return TCL_ERROR; |
114 |
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} |
115 |
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116 |
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result = Tcl_WriteObj(chan, objv[i]); |
117 |
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if (result < 0) { |
118 |
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goto error; |
119 |
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} |
120 |
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if (newline != 0) { |
121 |
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result = Tcl_WriteChars(chan, "\n", 1); |
122 |
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if (result < 0) { |
123 |
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goto error; |
124 |
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} |
125 |
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} |
126 |
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return TCL_OK; |
127 |
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128 |
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error: |
129 |
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Tcl_AppendResult(interp, "error writing \"", channelId, "\": ", |
130 |
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Tcl_PosixError(interp), (char *) NULL); |
131 |
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return TCL_ERROR; |
132 |
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} |
133 |
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134 |
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/* |
135 |
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*---------------------------------------------------------------------- |
136 |
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* |
137 |
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* Tcl_FlushObjCmd -- |
138 |
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* |
139 |
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* This procedure is called to process the Tcl "flush" command. |
140 |
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* See the user documentation for details on what it does. |
141 |
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* |
142 |
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* Results: |
143 |
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* A standard Tcl result. |
144 |
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* |
145 |
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* Side effects: |
146 |
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* May cause output to appear on the specified channel. |
147 |
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* |
148 |
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*---------------------------------------------------------------------- |
149 |
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*/ |
150 |
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|
151 |
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/* ARGSUSED */ |
152 |
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int |
153 |
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Tcl_FlushObjCmd(dummy, interp, objc, objv) |
154 |
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ClientData dummy; /* Not used. */ |
155 |
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Tcl_Interp *interp; /* Current interpreter. */ |
156 |
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int objc; /* Number of arguments. */ |
157 |
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Tcl_Obj *CONST objv[]; /* Argument objects. */ |
158 |
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{ |
159 |
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Tcl_Channel chan; /* The channel to flush on. */ |
160 |
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char *channelId; |
161 |
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int mode; |
162 |
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|
163 |
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if (objc != 2) { |
164 |
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Tcl_WrongNumArgs(interp, 1, objv, "channelId"); |
165 |
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return TCL_ERROR; |
166 |
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} |
167 |
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channelId = Tcl_GetString(objv[1]); |
168 |
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chan = Tcl_GetChannel(interp, channelId, &mode); |
169 |
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if (chan == (Tcl_Channel) NULL) { |
170 |
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return TCL_ERROR; |
171 |
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} |
172 |
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if ((mode & TCL_WRITABLE) == 0) { |
173 |
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Tcl_AppendResult(interp, "channel \"", channelId, |
174 |
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"\" wasn't opened for writing", (char *) NULL); |
175 |
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return TCL_ERROR; |
176 |
|
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} |
177 |
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|
178 |
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if (Tcl_Flush(chan) != TCL_OK) { |
179 |
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Tcl_AppendResult(interp, "error flushing \"", channelId, "\": ", |
180 |
|
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Tcl_PosixError(interp), (char *) NULL); |
181 |
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return TCL_ERROR; |
182 |
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} |
183 |
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return TCL_OK; |
184 |
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} |
185 |
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|
186 |
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/* |
187 |
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*---------------------------------------------------------------------- |
188 |
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* |
189 |
|
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* Tcl_GetsObjCmd -- |
190 |
|
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* |
191 |
|
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* This procedure is called to process the Tcl "gets" command. |
192 |
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* See the user documentation for details on what it does. |
193 |
|
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* |
194 |
|
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* Results: |
195 |
|
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* A standard Tcl result. |
196 |
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* |
197 |
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* Side effects: |
198 |
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* May consume input from channel. |
199 |
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* |
200 |
|
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*---------------------------------------------------------------------- |
201 |
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*/ |
202 |
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|
203 |
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/* ARGSUSED */ |
204 |
|
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int |
205 |
|
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Tcl_GetsObjCmd(dummy, interp, objc, objv) |
206 |
|
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ClientData dummy; /* Not used. */ |
207 |
|
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Tcl_Interp *interp; /* Current interpreter. */ |
208 |
|
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int objc; /* Number of arguments. */ |
209 |
|
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Tcl_Obj *CONST objv[]; /* Argument objects. */ |
210 |
|
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{ |
211 |
|
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Tcl_Channel chan; /* The channel to read from. */ |
212 |
|
|
int lineLen; /* Length of line just read. */ |
213 |
|
|
int mode; /* Mode in which channel is opened. */ |
214 |
|
|
char *name; |
215 |
|
|
Tcl_Obj *resultPtr, *linePtr; |
216 |
|
|
|
217 |
|
|
if ((objc != 2) && (objc != 3)) { |
218 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "channelId ?varName?"); |
219 |
|
|
return TCL_ERROR; |
220 |
|
|
} |
221 |
|
|
name = Tcl_GetString(objv[1]); |
222 |
|
|
chan = Tcl_GetChannel(interp, name, &mode); |
223 |
|
|
if (chan == (Tcl_Channel) NULL) { |
224 |
|
|
return TCL_ERROR; |
225 |
|
|
} |
226 |
|
|
if ((mode & TCL_READABLE) == 0) { |
227 |
|
|
Tcl_AppendResult(interp, "channel \"", name, |
228 |
|
|
"\" wasn't opened for reading", (char *) NULL); |
229 |
|
|
return TCL_ERROR; |
230 |
|
|
} |
231 |
|
|
|
232 |
|
|
resultPtr = Tcl_GetObjResult(interp); |
233 |
|
|
linePtr = resultPtr; |
234 |
|
|
if (objc == 3) { |
235 |
|
|
/* |
236 |
|
|
* Variable gets line, interp get bytecount. |
237 |
|
|
*/ |
238 |
|
|
|
239 |
|
|
linePtr = Tcl_NewObj(); |
240 |
|
|
} |
241 |
|
|
|
242 |
|
|
lineLen = Tcl_GetsObj(chan, linePtr); |
243 |
|
|
if (lineLen < 0) { |
244 |
|
|
if (!Tcl_Eof(chan) && !Tcl_InputBlocked(chan)) { |
245 |
|
|
if (linePtr != resultPtr) { |
246 |
|
|
Tcl_DecrRefCount(linePtr); |
247 |
|
|
} |
248 |
|
|
Tcl_ResetResult(interp); |
249 |
|
|
Tcl_AppendResult(interp, "error reading \"", name, "\": ", |
250 |
|
|
Tcl_PosixError(interp), (char *) NULL); |
251 |
|
|
return TCL_ERROR; |
252 |
|
|
} |
253 |
|
|
lineLen = -1; |
254 |
|
|
} |
255 |
|
|
if (objc == 3) { |
256 |
|
|
if (Tcl_ObjSetVar2(interp, objv[2], NULL, linePtr, |
257 |
|
|
TCL_LEAVE_ERR_MSG) == NULL) { |
258 |
|
|
Tcl_DecrRefCount(linePtr); |
259 |
|
|
return TCL_ERROR; |
260 |
|
|
} |
261 |
|
|
Tcl_SetIntObj(resultPtr, lineLen); |
262 |
|
|
return TCL_OK; |
263 |
|
|
} |
264 |
|
|
return TCL_OK; |
265 |
|
|
} |
266 |
|
|
|
267 |
|
|
/* |
268 |
|
|
*---------------------------------------------------------------------- |
269 |
|
|
* |
270 |
|
|
* Tcl_ReadObjCmd -- |
271 |
|
|
* |
272 |
|
|
* This procedure is invoked to process the Tcl "read" command. |
273 |
|
|
* See the user documentation for details on what it does. |
274 |
|
|
* |
275 |
|
|
* Results: |
276 |
|
|
* A standard Tcl result. |
277 |
|
|
* |
278 |
|
|
* Side effects: |
279 |
|
|
* May consume input from channel. |
280 |
|
|
* |
281 |
|
|
*---------------------------------------------------------------------- |
282 |
|
|
*/ |
283 |
|
|
|
284 |
|
|
/* ARGSUSED */ |
285 |
|
|
int |
286 |
|
|
Tcl_ReadObjCmd(dummy, interp, objc, objv) |
287 |
|
|
ClientData dummy; /* Not used. */ |
288 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
289 |
|
|
int objc; /* Number of arguments. */ |
290 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
291 |
|
|
{ |
292 |
|
|
Tcl_Channel chan; /* The channel to read from. */ |
293 |
|
|
int newline, i; /* Discard newline at end? */ |
294 |
|
|
int toRead; /* How many bytes to read? */ |
295 |
|
|
int charactersRead; /* How many characters were read? */ |
296 |
|
|
int mode; /* Mode in which channel is opened. */ |
297 |
|
|
char *name; |
298 |
|
|
Tcl_Obj *resultPtr; |
299 |
|
|
|
300 |
|
|
if ((objc != 2) && (objc != 3)) { |
301 |
|
|
argerror: |
302 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "channelId ?numChars?"); |
303 |
|
|
Tcl_AppendResult(interp, " or \"", Tcl_GetString(objv[0]), |
304 |
|
|
" ?-nonewline? channelId\"", (char *) NULL); |
305 |
|
|
return TCL_ERROR; |
306 |
|
|
} |
307 |
|
|
|
308 |
|
|
i = 1; |
309 |
|
|
newline = 0; |
310 |
|
|
if (strcmp(Tcl_GetString(objv[1]), "-nonewline") == 0) { |
311 |
|
|
newline = 1; |
312 |
|
|
i++; |
313 |
|
|
} |
314 |
|
|
|
315 |
|
|
if (i == objc) { |
316 |
|
|
goto argerror; |
317 |
|
|
} |
318 |
|
|
|
319 |
|
|
name = Tcl_GetString(objv[i]); |
320 |
|
|
chan = Tcl_GetChannel(interp, name, &mode); |
321 |
|
|
if (chan == (Tcl_Channel) NULL) { |
322 |
|
|
return TCL_ERROR; |
323 |
|
|
} |
324 |
|
|
if ((mode & TCL_READABLE) == 0) { |
325 |
|
|
Tcl_AppendResult(interp, "channel \"", name, |
326 |
|
|
"\" wasn't opened for reading", (char *) NULL); |
327 |
|
|
return TCL_ERROR; |
328 |
|
|
} |
329 |
|
|
i++; /* Consumed channel name. */ |
330 |
|
|
|
331 |
|
|
/* |
332 |
|
|
* Compute how many bytes to read, and see whether the final |
333 |
|
|
* newline should be dropped. |
334 |
|
|
*/ |
335 |
|
|
|
336 |
|
|
toRead = -1; |
337 |
|
|
if (i < objc) { |
338 |
|
|
char *arg; |
339 |
|
|
|
340 |
|
|
arg = Tcl_GetString(objv[i]); |
341 |
|
|
if (isdigit(UCHAR(arg[0]))) { /* INTL: digit */ |
342 |
|
|
if (Tcl_GetIntFromObj(interp, objv[i], &toRead) != TCL_OK) { |
343 |
|
|
return TCL_ERROR; |
344 |
|
|
} |
345 |
|
|
} else if (strcmp(arg, "nonewline") == 0) { |
346 |
|
|
newline = 1; |
347 |
|
|
} else { |
348 |
|
|
Tcl_AppendResult(interp, "bad argument \"", arg, |
349 |
|
|
"\": should be \"nonewline\"", (char *) NULL); |
350 |
|
|
return TCL_ERROR; |
351 |
|
|
} |
352 |
|
|
} |
353 |
|
|
|
354 |
|
|
resultPtr = Tcl_NewObj(); |
355 |
|
|
Tcl_IncrRefCount(resultPtr); |
356 |
|
|
charactersRead = Tcl_ReadChars(chan, resultPtr, toRead, 0); |
357 |
|
|
if (charactersRead < 0) { |
358 |
|
|
Tcl_ResetResult(interp); |
359 |
|
|
Tcl_AppendResult(interp, "error reading \"", name, "\": ", |
360 |
|
|
Tcl_PosixError(interp), (char *) NULL); |
361 |
|
|
Tcl_DecrRefCount(resultPtr); |
362 |
|
|
return TCL_ERROR; |
363 |
|
|
} |
364 |
|
|
|
365 |
|
|
/* |
366 |
|
|
* If requested, remove the last newline in the channel if at EOF. |
367 |
|
|
*/ |
368 |
|
|
|
369 |
|
|
if ((charactersRead > 0) && (newline != 0)) { |
370 |
|
|
char *result; |
371 |
|
|
int length; |
372 |
|
|
|
373 |
|
|
result = Tcl_GetStringFromObj(resultPtr, &length); |
374 |
|
|
if (result[length - 1] == '\n') { |
375 |
|
|
Tcl_SetObjLength(resultPtr, length - 1); |
376 |
|
|
} |
377 |
|
|
} |
378 |
|
|
Tcl_SetObjResult(interp, resultPtr); |
379 |
|
|
Tcl_DecrRefCount(resultPtr); |
380 |
|
|
return TCL_OK; |
381 |
|
|
} |
382 |
|
|
|
383 |
|
|
/* |
384 |
|
|
*---------------------------------------------------------------------- |
385 |
|
|
* |
386 |
|
|
* Tcl_SeekObjCmd -- |
387 |
|
|
* |
388 |
|
|
* This procedure is invoked to process the Tcl "seek" command. See |
389 |
|
|
* the user documentation for details on what it does. |
390 |
|
|
* |
391 |
|
|
* Results: |
392 |
|
|
* A standard Tcl result. |
393 |
|
|
* |
394 |
|
|
* Side effects: |
395 |
|
|
* Moves the position of the access point on the specified channel. |
396 |
|
|
* May flush queued output. |
397 |
|
|
* |
398 |
|
|
*---------------------------------------------------------------------- |
399 |
|
|
*/ |
400 |
|
|
|
401 |
|
|
/* ARGSUSED */ |
402 |
|
|
int |
403 |
|
|
Tcl_SeekObjCmd(clientData, interp, objc, objv) |
404 |
|
|
ClientData clientData; /* Not used. */ |
405 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
406 |
|
|
int objc; /* Number of arguments. */ |
407 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
408 |
|
|
{ |
409 |
|
|
Tcl_Channel chan; /* The channel to tell on. */ |
410 |
|
|
int offset, mode; /* Where to seek? */ |
411 |
|
|
int result; /* Of calling Tcl_Seek. */ |
412 |
|
|
char *chanName; |
413 |
|
|
int optionIndex; |
414 |
|
|
static char *originOptions[] = {"start", "current", "end", (char *) NULL}; |
415 |
|
|
static int modeArray[] = {SEEK_SET, SEEK_CUR, SEEK_END}; |
416 |
|
|
|
417 |
|
|
if ((objc != 3) && (objc != 4)) { |
418 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "channelId offset ?origin?"); |
419 |
|
|
return TCL_ERROR; |
420 |
|
|
} |
421 |
|
|
chanName = Tcl_GetString(objv[1]); |
422 |
|
|
chan = Tcl_GetChannel(interp, chanName, NULL); |
423 |
|
|
if (chan == (Tcl_Channel) NULL) { |
424 |
|
|
return TCL_ERROR; |
425 |
|
|
} |
426 |
|
|
if (Tcl_GetIntFromObj(interp, objv[2], &offset) != TCL_OK) { |
427 |
|
|
return TCL_ERROR; |
428 |
|
|
} |
429 |
|
|
mode = SEEK_SET; |
430 |
|
|
if (objc == 4) { |
431 |
|
|
if (Tcl_GetIndexFromObj(interp, objv[3], originOptions, "origin", 0, |
432 |
|
|
&optionIndex) != TCL_OK) { |
433 |
|
|
return TCL_ERROR; |
434 |
|
|
} |
435 |
|
|
mode = modeArray[optionIndex]; |
436 |
|
|
} |
437 |
|
|
|
438 |
|
|
result = Tcl_Seek(chan, offset, mode); |
439 |
|
|
if (result == -1) { |
440 |
|
|
Tcl_AppendResult(interp, "error during seek on \"", |
441 |
|
|
chanName, "\": ", Tcl_PosixError(interp), (char *) NULL); |
442 |
|
|
return TCL_ERROR; |
443 |
|
|
} |
444 |
|
|
return TCL_OK; |
445 |
|
|
} |
446 |
|
|
|
447 |
|
|
/* |
448 |
|
|
*---------------------------------------------------------------------- |
449 |
|
|
* |
450 |
|
|
* Tcl_TellObjCmd -- |
451 |
|
|
* |
452 |
|
|
* This procedure is invoked to process the Tcl "tell" command. |
453 |
|
|
* See the user documentation for details on what it does. |
454 |
|
|
* |
455 |
|
|
* Results: |
456 |
|
|
* A standard Tcl result. |
457 |
|
|
* |
458 |
|
|
* Side effects: |
459 |
|
|
* None. |
460 |
|
|
* |
461 |
|
|
*---------------------------------------------------------------------- |
462 |
|
|
*/ |
463 |
|
|
|
464 |
|
|
/* ARGSUSED */ |
465 |
|
|
int |
466 |
|
|
Tcl_TellObjCmd(clientData, interp, objc, objv) |
467 |
|
|
ClientData clientData; /* Not used. */ |
468 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
469 |
|
|
int objc; /* Number of arguments. */ |
470 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
471 |
|
|
{ |
472 |
|
|
Tcl_Channel chan; /* The channel to tell on. */ |
473 |
|
|
char *chanName; |
474 |
|
|
|
475 |
|
|
if (objc != 2) { |
476 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "channelId"); |
477 |
|
|
return TCL_ERROR; |
478 |
|
|
} |
479 |
|
|
/* |
480 |
|
|
* Try to find a channel with the right name and permissions in |
481 |
|
|
* the IO channel table of this interpreter. |
482 |
|
|
*/ |
483 |
|
|
|
484 |
|
|
chanName = Tcl_GetString(objv[1]); |
485 |
|
|
chan = Tcl_GetChannel(interp, chanName, NULL); |
486 |
|
|
if (chan == (Tcl_Channel) NULL) { |
487 |
|
|
return TCL_ERROR; |
488 |
|
|
} |
489 |
|
|
Tcl_SetIntObj(Tcl_GetObjResult(interp), Tcl_Tell(chan)); |
490 |
|
|
return TCL_OK; |
491 |
|
|
} |
492 |
|
|
|
493 |
|
|
/* |
494 |
|
|
*---------------------------------------------------------------------- |
495 |
|
|
* |
496 |
|
|
* Tcl_CloseObjCmd -- |
497 |
|
|
* |
498 |
|
|
* This procedure is invoked to process the Tcl "close" command. |
499 |
|
|
* See the user documentation for details on what it does. |
500 |
|
|
* |
501 |
|
|
* Results: |
502 |
|
|
* A standard Tcl result. |
503 |
|
|
* |
504 |
|
|
* Side effects: |
505 |
|
|
* May discard queued input; may flush queued output. |
506 |
|
|
* |
507 |
|
|
*---------------------------------------------------------------------- |
508 |
|
|
*/ |
509 |
|
|
|
510 |
|
|
/* ARGSUSED */ |
511 |
|
|
int |
512 |
|
|
Tcl_CloseObjCmd(clientData, interp, objc, objv) |
513 |
|
|
ClientData clientData; /* Not used. */ |
514 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
515 |
|
|
int objc; /* Number of arguments. */ |
516 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
517 |
|
|
{ |
518 |
|
|
Tcl_Channel chan; /* The channel to close. */ |
519 |
|
|
char *arg; |
520 |
|
|
|
521 |
|
|
if (objc != 2) { |
522 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "channelId"); |
523 |
|
|
return TCL_ERROR; |
524 |
|
|
} |
525 |
|
|
|
526 |
|
|
arg = Tcl_GetString(objv[1]); |
527 |
|
|
chan = Tcl_GetChannel(interp, arg, NULL); |
528 |
|
|
if (chan == (Tcl_Channel) NULL) { |
529 |
|
|
return TCL_ERROR; |
530 |
|
|
} |
531 |
|
|
|
532 |
|
|
if (Tcl_UnregisterChannel(interp, chan) != TCL_OK) { |
533 |
|
|
/* |
534 |
|
|
* If there is an error message and it ends with a newline, remove |
535 |
|
|
* the newline. This is done for command pipeline channels where the |
536 |
|
|
* error output from the subprocesses is stored in interp's result. |
537 |
|
|
* |
538 |
|
|
* NOTE: This is likely to not have any effect on regular error |
539 |
|
|
* messages produced by drivers during the closing of a channel, |
540 |
|
|
* because the Tcl convention is that such error messages do not |
541 |
|
|
* have a terminating newline. |
542 |
|
|
*/ |
543 |
|
|
|
544 |
|
|
Tcl_Obj *resultPtr; |
545 |
|
|
char *string; |
546 |
|
|
int len; |
547 |
|
|
|
548 |
|
|
resultPtr = Tcl_GetObjResult(interp); |
549 |
|
|
string = Tcl_GetStringFromObj(resultPtr, &len); |
550 |
|
|
if ((len > 0) && (string[len - 1] == '\n')) { |
551 |
|
|
Tcl_SetObjLength(resultPtr, len - 1); |
552 |
|
|
} |
553 |
|
|
return TCL_ERROR; |
554 |
|
|
} |
555 |
|
|
|
556 |
|
|
return TCL_OK; |
557 |
|
|
} |
558 |
|
|
|
559 |
|
|
/* |
560 |
|
|
*---------------------------------------------------------------------- |
561 |
|
|
* |
562 |
|
|
* Tcl_FconfigureObjCmd -- |
563 |
|
|
* |
564 |
|
|
* This procedure is invoked to process the Tcl "fconfigure" command. |
565 |
|
|
* See the user documentation for details on what it does. |
566 |
|
|
* |
567 |
|
|
* Results: |
568 |
|
|
* A standard Tcl result. |
569 |
|
|
* |
570 |
|
|
* Side effects: |
571 |
|
|
* May modify the behavior of an IO channel. |
572 |
|
|
* |
573 |
|
|
*---------------------------------------------------------------------- |
574 |
|
|
*/ |
575 |
|
|
|
576 |
|
|
/* ARGSUSED */ |
577 |
|
|
int |
578 |
|
|
Tcl_FconfigureObjCmd(clientData, interp, objc, objv) |
579 |
|
|
ClientData clientData; /* Not used. */ |
580 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
581 |
|
|
int objc; /* Number of arguments. */ |
582 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
583 |
|
|
{ |
584 |
|
|
char *chanName, *optionName, *valueName; |
585 |
|
|
Tcl_Channel chan; /* The channel to set a mode on. */ |
586 |
|
|
int i; /* Iterate over arg-value pairs. */ |
587 |
|
|
Tcl_DString ds; /* DString to hold result of |
588 |
|
|
* calling Tcl_GetChannelOption. */ |
589 |
|
|
|
590 |
|
|
if ((objc < 2) || (((objc % 2) == 1) && (objc != 3))) { |
591 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, |
592 |
|
|
"channelId ?optionName? ?value? ?optionName value?..."); |
593 |
|
|
return TCL_ERROR; |
594 |
|
|
} |
595 |
|
|
chanName = Tcl_GetString(objv[1]); |
596 |
|
|
chan = Tcl_GetChannel(interp, chanName, NULL); |
597 |
|
|
if (chan == (Tcl_Channel) NULL) { |
598 |
|
|
return TCL_ERROR; |
599 |
|
|
} |
600 |
|
|
if (objc == 2) { |
601 |
|
|
Tcl_DStringInit(&ds); |
602 |
|
|
if (Tcl_GetChannelOption(interp, chan, (char *) NULL, &ds) != TCL_OK) { |
603 |
|
|
Tcl_DStringFree(&ds); |
604 |
|
|
return TCL_ERROR; |
605 |
|
|
} |
606 |
|
|
Tcl_DStringResult(interp, &ds); |
607 |
|
|
return TCL_OK; |
608 |
|
|
} |
609 |
|
|
if (objc == 3) { |
610 |
|
|
Tcl_DStringInit(&ds); |
611 |
|
|
optionName = Tcl_GetString(objv[2]); |
612 |
|
|
if (Tcl_GetChannelOption(interp, chan, optionName, &ds) != TCL_OK) { |
613 |
|
|
Tcl_DStringFree(&ds); |
614 |
|
|
return TCL_ERROR; |
615 |
|
|
} |
616 |
|
|
Tcl_DStringResult(interp, &ds); |
617 |
|
|
return TCL_OK; |
618 |
|
|
} |
619 |
|
|
for (i = 3; i < objc; i += 2) { |
620 |
|
|
optionName = Tcl_GetString(objv[i-1]); |
621 |
|
|
valueName = Tcl_GetString(objv[i]); |
622 |
|
|
if (Tcl_SetChannelOption(interp, chan, optionName, valueName) |
623 |
|
|
!= TCL_OK) { |
624 |
|
|
return TCL_ERROR; |
625 |
|
|
} |
626 |
|
|
} |
627 |
|
|
return TCL_OK; |
628 |
|
|
} |
629 |
|
|
|
630 |
|
|
/* |
631 |
|
|
*--------------------------------------------------------------------------- |
632 |
|
|
* |
633 |
|
|
* Tcl_EofObjCmd -- |
634 |
|
|
* |
635 |
|
|
* This procedure is invoked to process the Tcl "eof" command. |
636 |
|
|
* See the user documentation for details on what it does. |
637 |
|
|
* |
638 |
|
|
* Results: |
639 |
|
|
* A standard Tcl result. |
640 |
|
|
* |
641 |
|
|
* Side effects: |
642 |
|
|
* Sets interp's result to boolean true or false depending on whether |
643 |
|
|
* the specified channel has an EOF condition. |
644 |
|
|
* |
645 |
|
|
*--------------------------------------------------------------------------- |
646 |
|
|
*/ |
647 |
|
|
|
648 |
|
|
/* ARGSUSED */ |
649 |
|
|
int |
650 |
|
|
Tcl_EofObjCmd(unused, interp, objc, objv) |
651 |
|
|
ClientData unused; /* Not used. */ |
652 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
653 |
|
|
int objc; /* Number of arguments. */ |
654 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
655 |
|
|
{ |
656 |
|
|
Tcl_Channel chan; |
657 |
|
|
int dummy; |
658 |
|
|
char *arg; |
659 |
|
|
|
660 |
|
|
if (objc != 2) { |
661 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "channelId"); |
662 |
|
|
return TCL_ERROR; |
663 |
|
|
} |
664 |
|
|
|
665 |
|
|
arg = Tcl_GetString(objv[1]); |
666 |
|
|
chan = Tcl_GetChannel(interp, arg, &dummy); |
667 |
|
|
if (chan == NULL) { |
668 |
|
|
return TCL_ERROR; |
669 |
|
|
} |
670 |
|
|
|
671 |
|
|
Tcl_SetBooleanObj(Tcl_GetObjResult(interp), Tcl_Eof(chan)); |
672 |
|
|
return TCL_OK; |
673 |
|
|
} |
674 |
|
|
|
675 |
|
|
/* |
676 |
|
|
*---------------------------------------------------------------------- |
677 |
|
|
* |
678 |
|
|
* Tcl_ExecObjCmd -- |
679 |
|
|
* |
680 |
|
|
* This procedure is invoked to process the "exec" Tcl command. |
681 |
|
|
* See the user documentation for details on what it does. |
682 |
|
|
* |
683 |
|
|
* Results: |
684 |
|
|
* A standard Tcl result. |
685 |
|
|
* |
686 |
|
|
* Side effects: |
687 |
|
|
* See the user documentation. |
688 |
|
|
* |
689 |
|
|
*---------------------------------------------------------------------- |
690 |
|
|
*/ |
691 |
|
|
|
692 |
|
|
/* ARGSUSED */ |
693 |
|
|
int |
694 |
|
|
Tcl_ExecObjCmd(dummy, interp, objc, objv) |
695 |
|
|
ClientData dummy; /* Not used. */ |
696 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
697 |
|
|
int objc; /* Number of arguments. */ |
698 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
699 |
|
|
{ |
700 |
|
|
#ifdef MAC_TCL |
701 |
|
|
|
702 |
|
|
Tcl_AppendResult(interp, "exec not implemented under Mac OS", |
703 |
|
|
(char *)NULL); |
704 |
|
|
return TCL_ERROR; |
705 |
|
|
|
706 |
|
|
#else /* !MAC_TCL */ |
707 |
|
|
|
708 |
|
|
/* |
709 |
|
|
* This procedure generates an argv array for the string arguments. It |
710 |
|
|
* starts out with stack-allocated space but uses dynamically-allocated |
711 |
|
|
* storage if needed. |
712 |
|
|
*/ |
713 |
|
|
|
714 |
|
|
#define NUM_ARGS 20 |
715 |
|
|
Tcl_Obj *resultPtr; |
716 |
|
|
char **argv; |
717 |
|
|
char *string; |
718 |
|
|
Tcl_Channel chan; |
719 |
|
|
char *argStorage[NUM_ARGS]; |
720 |
|
|
int argc, background, i, index, keepNewline, result, skip, length; |
721 |
|
|
static char *options[] = { |
722 |
|
|
"-keepnewline", "--", NULL |
723 |
|
|
}; |
724 |
|
|
enum options { |
725 |
|
|
EXEC_KEEPNEWLINE, EXEC_LAST |
726 |
|
|
}; |
727 |
|
|
|
728 |
|
|
/* |
729 |
|
|
* Check for a leading "-keepnewline" argument. |
730 |
|
|
*/ |
731 |
|
|
|
732 |
|
|
keepNewline = 0; |
733 |
|
|
for (skip = 1; skip < objc; skip++) { |
734 |
|
|
string = Tcl_GetString(objv[skip]); |
735 |
|
|
if (string[0] != '-') { |
736 |
|
|
break; |
737 |
|
|
} |
738 |
|
|
if (Tcl_GetIndexFromObj(interp, objv[skip], options, "switch", |
739 |
|
|
TCL_EXACT, &index) != TCL_OK) { |
740 |
|
|
return TCL_ERROR; |
741 |
|
|
} |
742 |
|
|
if (index == EXEC_KEEPNEWLINE) { |
743 |
|
|
keepNewline = 1; |
744 |
|
|
} else { |
745 |
|
|
skip++; |
746 |
|
|
break; |
747 |
|
|
} |
748 |
|
|
} |
749 |
|
|
if (objc <= skip) { |
750 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "?switches? arg ?arg ...?"); |
751 |
|
|
return TCL_ERROR; |
752 |
|
|
} |
753 |
|
|
|
754 |
|
|
/* |
755 |
|
|
* See if the command is to be run in background. |
756 |
|
|
*/ |
757 |
|
|
|
758 |
|
|
background = 0; |
759 |
|
|
string = Tcl_GetString(objv[objc - 1]); |
760 |
|
|
if ((string[0] == '&') && (string[1] == '\0')) { |
761 |
|
|
objc--; |
762 |
|
|
background = 1; |
763 |
|
|
} |
764 |
|
|
|
765 |
|
|
/* |
766 |
|
|
* Create the string argument array "argv". Make sure argv is large |
767 |
|
|
* enough to hold the argc arguments plus 1 extra for the zero |
768 |
|
|
* end-of-argv word. |
769 |
|
|
*/ |
770 |
|
|
|
771 |
|
|
argv = argStorage; |
772 |
|
|
argc = objc - skip; |
773 |
|
|
if ((argc + 1) > sizeof(argv) / sizeof(argv[0])) { |
774 |
|
|
argv = (char **) ckalloc((unsigned)(argc + 1) * sizeof(char *)); |
775 |
|
|
} |
776 |
|
|
|
777 |
|
|
/* |
778 |
|
|
* Copy the string conversions of each (post option) object into the |
779 |
|
|
* argument vector. |
780 |
|
|
*/ |
781 |
|
|
|
782 |
|
|
for (i = 0; i < argc; i++) { |
783 |
|
|
argv[i] = Tcl_GetString(objv[i + skip]); |
784 |
|
|
} |
785 |
|
|
argv[argc] = NULL; |
786 |
|
|
chan = Tcl_OpenCommandChannel(interp, argc, argv, |
787 |
|
|
(background ? 0 : TCL_STDOUT | TCL_STDERR)); |
788 |
|
|
|
789 |
|
|
/* |
790 |
|
|
* Free the argv array if malloc'ed storage was used. |
791 |
|
|
*/ |
792 |
|
|
|
793 |
|
|
if (argv != argStorage) { |
794 |
|
|
ckfree((char *)argv); |
795 |
|
|
} |
796 |
|
|
|
797 |
|
|
if (chan == (Tcl_Channel) NULL) { |
798 |
|
|
return TCL_ERROR; |
799 |
|
|
} |
800 |
|
|
|
801 |
|
|
if (background) { |
802 |
|
|
/* |
803 |
|
|
* Store the list of PIDs from the pipeline in interp's result and |
804 |
|
|
* detach the PIDs (instead of waiting for them). |
805 |
|
|
*/ |
806 |
|
|
|
807 |
|
|
TclGetAndDetachPids(interp, chan); |
808 |
|
|
if (Tcl_Close(interp, chan) != TCL_OK) { |
809 |
|
|
return TCL_ERROR; |
810 |
|
|
} |
811 |
|
|
return TCL_OK; |
812 |
|
|
} |
813 |
|
|
|
814 |
|
|
resultPtr = Tcl_NewObj(); |
815 |
|
|
if (Tcl_GetChannelHandle(chan, TCL_READABLE, NULL) == TCL_OK) { |
816 |
|
|
if (Tcl_ReadChars(chan, resultPtr, -1, 0) < 0) { |
817 |
|
|
Tcl_ResetResult(interp); |
818 |
|
|
Tcl_AppendResult(interp, "error reading output from command: ", |
819 |
|
|
Tcl_PosixError(interp), (char *) NULL); |
820 |
|
|
Tcl_DecrRefCount(resultPtr); |
821 |
|
|
return TCL_ERROR; |
822 |
|
|
} |
823 |
|
|
} |
824 |
|
|
/* |
825 |
|
|
* If the process produced anything on stderr, it will have been |
826 |
|
|
* returned in the interpreter result. It needs to be appended to |
827 |
|
|
* the result string. |
828 |
|
|
*/ |
829 |
|
|
|
830 |
|
|
result = Tcl_Close(interp, chan); |
831 |
|
|
string = Tcl_GetStringFromObj(Tcl_GetObjResult(interp), &length); |
832 |
|
|
Tcl_AppendToObj(resultPtr, string, length); |
833 |
|
|
|
834 |
|
|
/* |
835 |
|
|
* If the last character of the result is a newline, then remove |
836 |
|
|
* the newline character. |
837 |
|
|
*/ |
838 |
|
|
|
839 |
|
|
if (keepNewline == 0) { |
840 |
|
|
string = Tcl_GetStringFromObj(resultPtr, &length); |
841 |
|
|
if ((length > 0) && (string[length - 1] == '\n')) { |
842 |
|
|
Tcl_SetObjLength(resultPtr, length - 1); |
843 |
|
|
} |
844 |
|
|
} |
845 |
|
|
Tcl_SetObjResult(interp, resultPtr); |
846 |
|
|
|
847 |
|
|
return result; |
848 |
|
|
#endif /* !MAC_TCL */ |
849 |
|
|
} |
850 |
|
|
|
851 |
|
|
/* |
852 |
|
|
*--------------------------------------------------------------------------- |
853 |
|
|
* |
854 |
|
|
* Tcl_FblockedObjCmd -- |
855 |
|
|
* |
856 |
|
|
* This procedure is invoked to process the Tcl "fblocked" command. |
857 |
|
|
* See the user documentation for details on what it does. |
858 |
|
|
* |
859 |
|
|
* Results: |
860 |
|
|
* A standard Tcl result. |
861 |
|
|
* |
862 |
|
|
* Side effects: |
863 |
|
|
* Sets interp's result to boolean true or false depending on whether |
864 |
|
|
* the preceeding input operation on the channel would have blocked. |
865 |
|
|
* |
866 |
|
|
*--------------------------------------------------------------------------- |
867 |
|
|
*/ |
868 |
|
|
|
869 |
|
|
/* ARGSUSED */ |
870 |
|
|
int |
871 |
|
|
Tcl_FblockedObjCmd(unused, interp, objc, objv) |
872 |
|
|
ClientData unused; /* Not used. */ |
873 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
874 |
|
|
int objc; /* Number of arguments. */ |
875 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
876 |
|
|
{ |
877 |
|
|
Tcl_Channel chan; |
878 |
|
|
int mode; |
879 |
|
|
char *arg; |
880 |
|
|
|
881 |
|
|
if (objc != 2) { |
882 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "channelId"); |
883 |
|
|
return TCL_ERROR; |
884 |
|
|
} |
885 |
|
|
|
886 |
|
|
arg = Tcl_GetString(objv[1]); |
887 |
|
|
chan = Tcl_GetChannel(interp, arg, &mode); |
888 |
|
|
if (chan == NULL) { |
889 |
|
|
return TCL_ERROR; |
890 |
|
|
} |
891 |
|
|
if ((mode & TCL_READABLE) == 0) { |
892 |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"", |
893 |
|
|
arg, "\" wasn't opened for reading", (char *) NULL); |
894 |
|
|
return TCL_ERROR; |
895 |
|
|
} |
896 |
|
|
|
897 |
|
|
Tcl_SetBooleanObj(Tcl_GetObjResult(interp), Tcl_InputBlocked(chan)); |
898 |
|
|
return TCL_OK; |
899 |
|
|
} |
900 |
|
|
|
901 |
|
|
/* |
902 |
|
|
*---------------------------------------------------------------------- |
903 |
|
|
* |
904 |
|
|
* Tcl_OpenObjCmd -- |
905 |
|
|
* |
906 |
|
|
* This procedure is invoked to process the "open" Tcl command. |
907 |
|
|
* See the user documentation for details on what it does. |
908 |
|
|
* |
909 |
|
|
* Results: |
910 |
|
|
* A standard Tcl result. |
911 |
|
|
* |
912 |
|
|
* Side effects: |
913 |
|
|
* See the user documentation. |
914 |
|
|
* |
915 |
|
|
*---------------------------------------------------------------------- |
916 |
|
|
*/ |
917 |
|
|
|
918 |
|
|
/* ARGSUSED */ |
919 |
|
|
int |
920 |
|
|
Tcl_OpenObjCmd(notUsed, interp, objc, objv) |
921 |
|
|
ClientData notUsed; /* Not used. */ |
922 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
923 |
|
|
int objc; /* Number of arguments. */ |
924 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
925 |
|
|
{ |
926 |
|
|
int pipeline, prot; |
927 |
|
|
char *modeString, *what; |
928 |
|
|
Tcl_Channel chan; |
929 |
|
|
|
930 |
|
|
if ((objc < 2) || (objc > 4)) { |
931 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, "fileName ?access? ?permissions?"); |
932 |
|
|
return TCL_ERROR; |
933 |
|
|
} |
934 |
|
|
prot = 0666; |
935 |
|
|
if (objc == 2) { |
936 |
|
|
modeString = "r"; |
937 |
|
|
} else { |
938 |
|
|
modeString = Tcl_GetString(objv[2]); |
939 |
|
|
if (objc == 4) { |
940 |
|
|
if (Tcl_GetIntFromObj(interp, objv[3], &prot) != TCL_OK) { |
941 |
|
|
return TCL_ERROR; |
942 |
|
|
} |
943 |
|
|
} |
944 |
|
|
} |
945 |
|
|
|
946 |
|
|
pipeline = 0; |
947 |
|
|
what = Tcl_GetString(objv[1]); |
948 |
|
|
if (what[0] == '|') { |
949 |
|
|
pipeline = 1; |
950 |
|
|
} |
951 |
|
|
|
952 |
|
|
/* |
953 |
|
|
* Open the file or create a process pipeline. |
954 |
|
|
*/ |
955 |
|
|
|
956 |
|
|
if (!pipeline) { |
957 |
|
|
chan = Tcl_OpenFileChannel(interp, what, modeString, prot); |
958 |
|
|
} else { |
959 |
|
|
#ifdef MAC_TCL |
960 |
|
|
Tcl_AppendResult(interp, |
961 |
|
|
"command pipelines not supported on Macintosh OS", |
962 |
|
|
(char *)NULL); |
963 |
|
|
return TCL_ERROR; |
964 |
|
|
#else |
965 |
|
|
int mode, seekFlag, cmdObjc; |
966 |
|
|
char **cmdArgv; |
967 |
|
|
|
968 |
|
|
if (Tcl_SplitList(interp, what+1, &cmdObjc, &cmdArgv) != TCL_OK) { |
969 |
|
|
return TCL_ERROR; |
970 |
|
|
} |
971 |
|
|
|
972 |
|
|
mode = TclGetOpenMode(interp, modeString, &seekFlag); |
973 |
|
|
if (mode == -1) { |
974 |
|
|
chan = NULL; |
975 |
|
|
} else { |
976 |
|
|
int flags = TCL_STDERR | TCL_ENFORCE_MODE; |
977 |
|
|
switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) { |
978 |
|
|
case O_RDONLY: |
979 |
|
|
flags |= TCL_STDOUT; |
980 |
|
|
break; |
981 |
|
|
case O_WRONLY: |
982 |
|
|
flags |= TCL_STDIN; |
983 |
|
|
break; |
984 |
|
|
case O_RDWR: |
985 |
|
|
flags |= (TCL_STDIN | TCL_STDOUT); |
986 |
|
|
break; |
987 |
|
|
default: |
988 |
|
|
panic("Tcl_OpenCmd: invalid mode value"); |
989 |
|
|
break; |
990 |
|
|
} |
991 |
|
|
chan = Tcl_OpenCommandChannel(interp, cmdObjc, cmdArgv, flags); |
992 |
|
|
} |
993 |
|
|
ckfree((char *) cmdArgv); |
994 |
|
|
#endif |
995 |
|
|
} |
996 |
|
|
if (chan == (Tcl_Channel) NULL) { |
997 |
|
|
return TCL_ERROR; |
998 |
|
|
} |
999 |
|
|
Tcl_RegisterChannel(interp, chan); |
1000 |
|
|
Tcl_AppendResult(interp, Tcl_GetChannelName(chan), (char *) NULL); |
1001 |
|
|
return TCL_OK; |
1002 |
|
|
} |
1003 |
|
|
|
1004 |
|
|
/* |
1005 |
|
|
*---------------------------------------------------------------------- |
1006 |
|
|
* |
1007 |
|
|
* TcpAcceptCallbacksDeleteProc -- |
1008 |
|
|
* |
1009 |
|
|
* Assocdata cleanup routine called when an interpreter is being |
1010 |
|
|
* deleted to set the interp field of all the accept callback records |
1011 |
|
|
* registered with the interpreter to NULL. This will prevent the |
1012 |
|
|
* interpreter from being used in the future to eval accept scripts. |
1013 |
|
|
* |
1014 |
|
|
* Results: |
1015 |
|
|
* None. |
1016 |
|
|
* |
1017 |
|
|
* Side effects: |
1018 |
|
|
* Deallocates memory and sets the interp field of all the accept |
1019 |
|
|
* callback records to NULL to prevent this interpreter from being |
1020 |
|
|
* used subsequently to eval accept scripts. |
1021 |
|
|
* |
1022 |
|
|
*---------------------------------------------------------------------- |
1023 |
|
|
*/ |
1024 |
|
|
|
1025 |
|
|
/* ARGSUSED */ |
1026 |
|
|
static void |
1027 |
|
|
TcpAcceptCallbacksDeleteProc(clientData, interp) |
1028 |
|
|
ClientData clientData; /* Data which was passed when the assocdata |
1029 |
|
|
* was registered. */ |
1030 |
|
|
Tcl_Interp *interp; /* Interpreter being deleted - not used. */ |
1031 |
|
|
{ |
1032 |
|
|
Tcl_HashTable *hTblPtr; |
1033 |
|
|
Tcl_HashEntry *hPtr; |
1034 |
|
|
Tcl_HashSearch hSearch; |
1035 |
|
|
AcceptCallback *acceptCallbackPtr; |
1036 |
|
|
|
1037 |
|
|
hTblPtr = (Tcl_HashTable *) clientData; |
1038 |
|
|
for (hPtr = Tcl_FirstHashEntry(hTblPtr, &hSearch); |
1039 |
|
|
hPtr != (Tcl_HashEntry *) NULL; |
1040 |
|
|
hPtr = Tcl_NextHashEntry(&hSearch)) { |
1041 |
|
|
acceptCallbackPtr = (AcceptCallback *) Tcl_GetHashValue(hPtr); |
1042 |
|
|
acceptCallbackPtr->interp = (Tcl_Interp *) NULL; |
1043 |
|
|
} |
1044 |
|
|
Tcl_DeleteHashTable(hTblPtr); |
1045 |
|
|
ckfree((char *) hTblPtr); |
1046 |
|
|
} |
1047 |
|
|
|
1048 |
|
|
/* |
1049 |
|
|
*---------------------------------------------------------------------- |
1050 |
|
|
* |
1051 |
|
|
* RegisterTcpServerInterpCleanup -- |
1052 |
|
|
* |
1053 |
|
|
* Registers an accept callback record to have its interp |
1054 |
|
|
* field set to NULL when the interpreter is deleted. |
1055 |
|
|
* |
1056 |
|
|
* Results: |
1057 |
|
|
* None. |
1058 |
|
|
* |
1059 |
|
|
* Side effects: |
1060 |
|
|
* When, in the future, the interpreter is deleted, the interp |
1061 |
|
|
* field of the accept callback data structure will be set to |
1062 |
|
|
* NULL. This will prevent attempts to eval the accept script |
1063 |
|
|
* in a deleted interpreter. |
1064 |
|
|
* |
1065 |
|
|
*---------------------------------------------------------------------- |
1066 |
|
|
*/ |
1067 |
|
|
|
1068 |
|
|
static void |
1069 |
|
|
RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr) |
1070 |
|
|
Tcl_Interp *interp; /* Interpreter for which we want to be |
1071 |
|
|
* informed of deletion. */ |
1072 |
|
|
AcceptCallback *acceptCallbackPtr; |
1073 |
|
|
/* The accept callback record whose |
1074 |
|
|
* interp field we want set to NULL when |
1075 |
|
|
* the interpreter is deleted. */ |
1076 |
|
|
{ |
1077 |
|
|
Tcl_HashTable *hTblPtr; /* Hash table for accept callback |
1078 |
|
|
* records to smash when the interpreter |
1079 |
|
|
* will be deleted. */ |
1080 |
|
|
Tcl_HashEntry *hPtr; /* Entry for this record. */ |
1081 |
|
|
int new; /* Is the entry new? */ |
1082 |
|
|
|
1083 |
|
|
hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, |
1084 |
|
|
"tclTCPAcceptCallbacks", |
1085 |
|
|
NULL); |
1086 |
|
|
if (hTblPtr == (Tcl_HashTable *) NULL) { |
1087 |
|
|
hTblPtr = (Tcl_HashTable *) ckalloc((unsigned) sizeof(Tcl_HashTable)); |
1088 |
|
|
Tcl_InitHashTable(hTblPtr, TCL_ONE_WORD_KEYS); |
1089 |
|
|
(void) Tcl_SetAssocData(interp, "tclTCPAcceptCallbacks", |
1090 |
|
|
TcpAcceptCallbacksDeleteProc, (ClientData) hTblPtr); |
1091 |
|
|
} |
1092 |
|
|
hPtr = Tcl_CreateHashEntry(hTblPtr, (char *) acceptCallbackPtr, &new); |
1093 |
|
|
if (!new) { |
1094 |
|
|
panic("RegisterTcpServerCleanup: damaged accept record table"); |
1095 |
|
|
} |
1096 |
|
|
Tcl_SetHashValue(hPtr, (ClientData) acceptCallbackPtr); |
1097 |
|
|
} |
1098 |
|
|
|
1099 |
|
|
/* |
1100 |
|
|
*---------------------------------------------------------------------- |
1101 |
|
|
* |
1102 |
|
|
* UnregisterTcpServerInterpCleanupProc -- |
1103 |
|
|
* |
1104 |
|
|
* Unregister a previously registered accept callback record. The |
1105 |
|
|
* interp field of this record will no longer be set to NULL in |
1106 |
|
|
* the future when the interpreter is deleted. |
1107 |
|
|
* |
1108 |
|
|
* Results: |
1109 |
|
|
* None. |
1110 |
|
|
* |
1111 |
|
|
* Side effects: |
1112 |
|
|
* Prevents the interp field of the accept callback record from |
1113 |
|
|
* being set to NULL in the future when the interpreter is deleted. |
1114 |
|
|
* |
1115 |
|
|
*---------------------------------------------------------------------- |
1116 |
|
|
*/ |
1117 |
|
|
|
1118 |
|
|
static void |
1119 |
|
|
UnregisterTcpServerInterpCleanupProc(interp, acceptCallbackPtr) |
1120 |
|
|
Tcl_Interp *interp; /* Interpreter in which the accept callback |
1121 |
|
|
* record was registered. */ |
1122 |
|
|
AcceptCallback *acceptCallbackPtr; |
1123 |
|
|
/* The record for which to delete the |
1124 |
|
|
* registration. */ |
1125 |
|
|
{ |
1126 |
|
|
Tcl_HashTable *hTblPtr; |
1127 |
|
|
Tcl_HashEntry *hPtr; |
1128 |
|
|
|
1129 |
|
|
hTblPtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, |
1130 |
|
|
"tclTCPAcceptCallbacks", NULL); |
1131 |
|
|
if (hTblPtr == (Tcl_HashTable *) NULL) { |
1132 |
|
|
return; |
1133 |
|
|
} |
1134 |
|
|
hPtr = Tcl_FindHashEntry(hTblPtr, (char *) acceptCallbackPtr); |
1135 |
|
|
if (hPtr == (Tcl_HashEntry *) NULL) { |
1136 |
|
|
return; |
1137 |
|
|
} |
1138 |
|
|
Tcl_DeleteHashEntry(hPtr); |
1139 |
|
|
} |
1140 |
|
|
|
1141 |
|
|
/* |
1142 |
|
|
*---------------------------------------------------------------------- |
1143 |
|
|
* |
1144 |
|
|
* AcceptCallbackProc -- |
1145 |
|
|
* |
1146 |
|
|
* This callback is invoked by the TCP channel driver when it |
1147 |
|
|
* accepts a new connection from a client on a server socket. |
1148 |
|
|
* |
1149 |
|
|
* Results: |
1150 |
|
|
* None. |
1151 |
|
|
* |
1152 |
|
|
* Side effects: |
1153 |
|
|
* Whatever the script does. |
1154 |
|
|
* |
1155 |
|
|
*---------------------------------------------------------------------- |
1156 |
|
|
*/ |
1157 |
|
|
|
1158 |
|
|
static void |
1159 |
|
|
AcceptCallbackProc(callbackData, chan, address, port) |
1160 |
|
|
ClientData callbackData; /* The data stored when the callback |
1161 |
|
|
* was created in the call to |
1162 |
|
|
* Tcl_OpenTcpServer. */ |
1163 |
|
|
Tcl_Channel chan; /* Channel for the newly accepted |
1164 |
|
|
* connection. */ |
1165 |
|
|
char *address; /* Address of client that was |
1166 |
|
|
* accepted. */ |
1167 |
|
|
int port; /* Port of client that was accepted. */ |
1168 |
|
|
{ |
1169 |
|
|
AcceptCallback *acceptCallbackPtr; |
1170 |
|
|
Tcl_Interp *interp; |
1171 |
|
|
char *script; |
1172 |
|
|
char portBuf[TCL_INTEGER_SPACE]; |
1173 |
|
|
int result; |
1174 |
|
|
|
1175 |
|
|
acceptCallbackPtr = (AcceptCallback *) callbackData; |
1176 |
|
|
|
1177 |
|
|
/* |
1178 |
|
|
* Check if the callback is still valid; the interpreter may have gone |
1179 |
|
|
* away, this is signalled by setting the interp field of the callback |
1180 |
|
|
* data to NULL. |
1181 |
|
|
*/ |
1182 |
|
|
|
1183 |
|
|
if (acceptCallbackPtr->interp != (Tcl_Interp *) NULL) { |
1184 |
|
|
|
1185 |
|
|
script = acceptCallbackPtr->script; |
1186 |
|
|
interp = acceptCallbackPtr->interp; |
1187 |
|
|
|
1188 |
|
|
Tcl_Preserve((ClientData) script); |
1189 |
|
|
Tcl_Preserve((ClientData) interp); |
1190 |
|
|
|
1191 |
|
|
TclFormatInt(portBuf, port); |
1192 |
|
|
Tcl_RegisterChannel(interp, chan); |
1193 |
|
|
|
1194 |
|
|
/* |
1195 |
|
|
* Artificially bump the refcount to protect the channel from |
1196 |
|
|
* being deleted while the script is being evaluated. |
1197 |
|
|
*/ |
1198 |
|
|
|
1199 |
|
|
Tcl_RegisterChannel((Tcl_Interp *) NULL, chan); |
1200 |
|
|
|
1201 |
|
|
result = Tcl_VarEval(interp, script, " ", Tcl_GetChannelName(chan), |
1202 |
|
|
" ", address, " ", portBuf, (char *) NULL); |
1203 |
|
|
if (result != TCL_OK) { |
1204 |
|
|
Tcl_BackgroundError(interp); |
1205 |
|
|
Tcl_UnregisterChannel(interp, chan); |
1206 |
|
|
} |
1207 |
|
|
|
1208 |
|
|
/* |
1209 |
|
|
* Decrement the artificially bumped refcount. After this it is |
1210 |
|
|
* not safe anymore to use "chan", because it may now be deleted. |
1211 |
|
|
*/ |
1212 |
|
|
|
1213 |
|
|
Tcl_UnregisterChannel((Tcl_Interp *) NULL, chan); |
1214 |
|
|
|
1215 |
|
|
Tcl_Release((ClientData) interp); |
1216 |
|
|
Tcl_Release((ClientData) script); |
1217 |
|
|
} else { |
1218 |
|
|
|
1219 |
|
|
/* |
1220 |
|
|
* The interpreter has been deleted, so there is no useful |
1221 |
|
|
* way to utilize the client socket - just close it. |
1222 |
|
|
*/ |
1223 |
|
|
|
1224 |
|
|
Tcl_Close((Tcl_Interp *) NULL, chan); |
1225 |
|
|
} |
1226 |
|
|
} |
1227 |
|
|
|
1228 |
|
|
/* |
1229 |
|
|
*---------------------------------------------------------------------- |
1230 |
|
|
* |
1231 |
|
|
* TcpServerCloseProc -- |
1232 |
|
|
* |
1233 |
|
|
* This callback is called when the TCP server channel for which it |
1234 |
|
|
* was registered is being closed. It informs the interpreter in |
1235 |
|
|
* which the accept script is evaluated (if that interpreter still |
1236 |
|
|
* exists) that this channel no longer needs to be informed if the |
1237 |
|
|
* interpreter is deleted. |
1238 |
|
|
* |
1239 |
|
|
* Results: |
1240 |
|
|
* None. |
1241 |
|
|
* |
1242 |
|
|
* Side effects: |
1243 |
|
|
* In the future, if the interpreter is deleted this channel will |
1244 |
|
|
* no longer be informed. |
1245 |
|
|
* |
1246 |
|
|
*---------------------------------------------------------------------- |
1247 |
|
|
*/ |
1248 |
|
|
|
1249 |
|
|
static void |
1250 |
|
|
TcpServerCloseProc(callbackData) |
1251 |
|
|
ClientData callbackData; /* The data passed in the call to |
1252 |
|
|
* Tcl_CreateCloseHandler. */ |
1253 |
|
|
{ |
1254 |
|
|
AcceptCallback *acceptCallbackPtr; |
1255 |
|
|
/* The actual data. */ |
1256 |
|
|
|
1257 |
|
|
acceptCallbackPtr = (AcceptCallback *) callbackData; |
1258 |
|
|
if (acceptCallbackPtr->interp != (Tcl_Interp *) NULL) { |
1259 |
|
|
UnregisterTcpServerInterpCleanupProc(acceptCallbackPtr->interp, |
1260 |
|
|
acceptCallbackPtr); |
1261 |
|
|
} |
1262 |
|
|
Tcl_EventuallyFree((ClientData) acceptCallbackPtr->script, TCL_DYNAMIC); |
1263 |
|
|
ckfree((char *) acceptCallbackPtr); |
1264 |
|
|
} |
1265 |
|
|
|
1266 |
|
|
/* |
1267 |
|
|
*---------------------------------------------------------------------- |
1268 |
|
|
* |
1269 |
|
|
* Tcl_SocketObjCmd -- |
1270 |
|
|
* |
1271 |
|
|
* This procedure is invoked to process the "socket" Tcl command. |
1272 |
|
|
* See the user documentation for details on what it does. |
1273 |
|
|
* |
1274 |
|
|
* Results: |
1275 |
|
|
* A standard Tcl result. |
1276 |
|
|
* |
1277 |
|
|
* Side effects: |
1278 |
|
|
* Creates a socket based channel. |
1279 |
|
|
* |
1280 |
|
|
*---------------------------------------------------------------------- |
1281 |
|
|
*/ |
1282 |
|
|
|
1283 |
|
|
int |
1284 |
|
|
Tcl_SocketObjCmd(notUsed, interp, objc, objv) |
1285 |
|
|
ClientData notUsed; /* Not used. */ |
1286 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
1287 |
|
|
int objc; /* Number of arguments. */ |
1288 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
1289 |
|
|
{ |
1290 |
|
|
static char *socketOptions[] = { |
1291 |
|
|
"-async", "-myaddr", "-myport","-server", (char *) NULL |
1292 |
|
|
}; |
1293 |
|
|
enum socketOptions { |
1294 |
|
|
SKT_ASYNC, SKT_MYADDR, SKT_MYPORT, SKT_SERVER |
1295 |
|
|
}; |
1296 |
|
|
int optionIndex, a, server, port; |
1297 |
|
|
char *arg, *copyScript, *host, *script; |
1298 |
|
|
char *myaddr = NULL; |
1299 |
|
|
int myport = 0; |
1300 |
|
|
int async = 0; |
1301 |
|
|
Tcl_Channel chan; |
1302 |
|
|
AcceptCallback *acceptCallbackPtr; |
1303 |
|
|
|
1304 |
|
|
server = 0; |
1305 |
|
|
script = NULL; |
1306 |
|
|
|
1307 |
|
|
if (TclpHasSockets(interp) != TCL_OK) { |
1308 |
|
|
return TCL_ERROR; |
1309 |
|
|
} |
1310 |
|
|
|
1311 |
|
|
for (a = 1; a < objc; a++) { |
1312 |
|
|
arg = Tcl_GetString(objv[a]); |
1313 |
|
|
if (arg[0] != '-') { |
1314 |
|
|
break; |
1315 |
|
|
} |
1316 |
|
|
if (Tcl_GetIndexFromObj(interp, objv[a], socketOptions, |
1317 |
|
|
"option", TCL_EXACT, &optionIndex) != TCL_OK) { |
1318 |
|
|
return TCL_ERROR; |
1319 |
|
|
} |
1320 |
|
|
switch ((enum socketOptions) optionIndex) { |
1321 |
|
|
case SKT_ASYNC: { |
1322 |
|
|
if (server == 1) { |
1323 |
|
|
Tcl_AppendResult(interp, |
1324 |
|
|
"cannot set -async option for server sockets", |
1325 |
|
|
(char *) NULL); |
1326 |
|
|
return TCL_ERROR; |
1327 |
|
|
} |
1328 |
|
|
async = 1; |
1329 |
|
|
break; |
1330 |
|
|
} |
1331 |
|
|
case SKT_MYADDR: { |
1332 |
|
|
a++; |
1333 |
|
|
if (a >= objc) { |
1334 |
|
|
Tcl_AppendResult(interp, |
1335 |
|
|
"no argument given for -myaddr option", |
1336 |
|
|
(char *) NULL); |
1337 |
|
|
return TCL_ERROR; |
1338 |
|
|
} |
1339 |
|
|
myaddr = Tcl_GetString(objv[a]); |
1340 |
|
|
break; |
1341 |
|
|
} |
1342 |
|
|
case SKT_MYPORT: { |
1343 |
|
|
char *myPortName; |
1344 |
|
|
a++; |
1345 |
|
|
if (a >= objc) { |
1346 |
|
|
Tcl_AppendResult(interp, |
1347 |
|
|
"no argument given for -myport option", |
1348 |
|
|
(char *) NULL); |
1349 |
|
|
return TCL_ERROR; |
1350 |
|
|
} |
1351 |
|
|
myPortName = Tcl_GetString(objv[a]); |
1352 |
|
|
if (TclSockGetPort(interp, myPortName, "tcp", &myport) |
1353 |
|
|
!= TCL_OK) { |
1354 |
|
|
return TCL_ERROR; |
1355 |
|
|
} |
1356 |
|
|
break; |
1357 |
|
|
} |
1358 |
|
|
case SKT_SERVER: { |
1359 |
|
|
if (async == 1) { |
1360 |
|
|
Tcl_AppendResult(interp, |
1361 |
|
|
"cannot set -async option for server sockets", |
1362 |
|
|
(char *) NULL); |
1363 |
|
|
return TCL_ERROR; |
1364 |
|
|
} |
1365 |
|
|
server = 1; |
1366 |
|
|
a++; |
1367 |
|
|
if (a >= objc) { |
1368 |
|
|
Tcl_AppendResult(interp, |
1369 |
|
|
"no argument given for -server option", |
1370 |
|
|
(char *) NULL); |
1371 |
|
|
return TCL_ERROR; |
1372 |
|
|
} |
1373 |
|
|
script = Tcl_GetString(objv[a]); |
1374 |
|
|
break; |
1375 |
|
|
} |
1376 |
|
|
default: { |
1377 |
|
|
panic("Tcl_SocketObjCmd: bad option index to SocketOptions"); |
1378 |
|
|
} |
1379 |
|
|
} |
1380 |
|
|
} |
1381 |
|
|
if (server) { |
1382 |
|
|
host = myaddr; /* NULL implies INADDR_ANY */ |
1383 |
|
|
if (myport != 0) { |
1384 |
|
|
Tcl_AppendResult(interp, "Option -myport is not valid for servers", |
1385 |
|
|
NULL); |
1386 |
|
|
return TCL_ERROR; |
1387 |
|
|
} |
1388 |
|
|
} else if (a < objc) { |
1389 |
|
|
host = Tcl_GetString(objv[a]); |
1390 |
|
|
a++; |
1391 |
|
|
} else { |
1392 |
|
|
wrongNumArgs: |
1393 |
|
|
Tcl_AppendResult(interp, "wrong # args: should be either:\n", |
1394 |
|
|
Tcl_GetString(objv[0]), |
1395 |
|
|
" ?-myaddr addr? ?-myport myport? ?-async? host port\n", |
1396 |
|
|
Tcl_GetString(objv[0]), |
1397 |
|
|
" -server command ?-myaddr addr? port", |
1398 |
|
|
(char *) NULL); |
1399 |
|
|
return TCL_ERROR; |
1400 |
|
|
} |
1401 |
|
|
|
1402 |
|
|
if (a == objc-1) { |
1403 |
|
|
if (TclSockGetPort(interp, Tcl_GetString(objv[a]), |
1404 |
|
|
"tcp", &port) != TCL_OK) { |
1405 |
|
|
return TCL_ERROR; |
1406 |
|
|
} |
1407 |
|
|
} else { |
1408 |
|
|
goto wrongNumArgs; |
1409 |
|
|
} |
1410 |
|
|
|
1411 |
|
|
if (server) { |
1412 |
|
|
acceptCallbackPtr = (AcceptCallback *) ckalloc((unsigned) |
1413 |
|
|
sizeof(AcceptCallback)); |
1414 |
|
|
copyScript = ckalloc((unsigned) strlen(script) + 1); |
1415 |
|
|
strcpy(copyScript, script); |
1416 |
|
|
acceptCallbackPtr->script = copyScript; |
1417 |
|
|
acceptCallbackPtr->interp = interp; |
1418 |
|
|
chan = Tcl_OpenTcpServer(interp, port, host, AcceptCallbackProc, |
1419 |
|
|
(ClientData) acceptCallbackPtr); |
1420 |
|
|
if (chan == (Tcl_Channel) NULL) { |
1421 |
|
|
ckfree(copyScript); |
1422 |
|
|
ckfree((char *) acceptCallbackPtr); |
1423 |
|
|
return TCL_ERROR; |
1424 |
|
|
} |
1425 |
|
|
|
1426 |
|
|
/* |
1427 |
|
|
* Register with the interpreter to let us know when the |
1428 |
|
|
* interpreter is deleted (by having the callback set the |
1429 |
|
|
* acceptCallbackPtr->interp field to NULL). This is to |
1430 |
|
|
* avoid trying to eval the script in a deleted interpreter. |
1431 |
|
|
*/ |
1432 |
|
|
|
1433 |
|
|
RegisterTcpServerInterpCleanup(interp, acceptCallbackPtr); |
1434 |
|
|
|
1435 |
|
|
/* |
1436 |
|
|
* Register a close callback. This callback will inform the |
1437 |
|
|
* interpreter (if it still exists) that this channel does not |
1438 |
|
|
* need to be informed when the interpreter is deleted. |
1439 |
|
|
*/ |
1440 |
|
|
|
1441 |
|
|
Tcl_CreateCloseHandler(chan, TcpServerCloseProc, |
1442 |
|
|
(ClientData) acceptCallbackPtr); |
1443 |
|
|
} else { |
1444 |
|
|
chan = Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async); |
1445 |
|
|
if (chan == (Tcl_Channel) NULL) { |
1446 |
|
|
return TCL_ERROR; |
1447 |
|
|
} |
1448 |
|
|
} |
1449 |
|
|
Tcl_RegisterChannel(interp, chan); |
1450 |
|
|
Tcl_AppendResult(interp, Tcl_GetChannelName(chan), (char *) NULL); |
1451 |
|
|
|
1452 |
|
|
return TCL_OK; |
1453 |
|
|
} |
1454 |
|
|
|
1455 |
|
|
/* |
1456 |
|
|
*---------------------------------------------------------------------- |
1457 |
|
|
* |
1458 |
|
|
* Tcl_FcopyObjCmd -- |
1459 |
|
|
* |
1460 |
|
|
* This procedure is invoked to process the "fcopy" Tcl command. |
1461 |
|
|
* See the user documentation for details on what it does. |
1462 |
|
|
* |
1463 |
|
|
* Results: |
1464 |
|
|
* A standard Tcl result. |
1465 |
|
|
* |
1466 |
|
|
* Side effects: |
1467 |
|
|
* Moves data between two channels and possibly sets up a |
1468 |
|
|
* background copy handler. |
1469 |
|
|
* |
1470 |
|
|
*---------------------------------------------------------------------- |
1471 |
|
|
*/ |
1472 |
|
|
|
1473 |
|
|
int |
1474 |
|
|
Tcl_FcopyObjCmd(dummy, interp, objc, objv) |
1475 |
|
|
ClientData dummy; /* Not used. */ |
1476 |
|
|
Tcl_Interp *interp; /* Current interpreter. */ |
1477 |
|
|
int objc; /* Number of arguments. */ |
1478 |
|
|
Tcl_Obj *CONST objv[]; /* Argument objects. */ |
1479 |
|
|
{ |
1480 |
|
|
Tcl_Channel inChan, outChan; |
1481 |
|
|
char *arg; |
1482 |
|
|
int mode, i; |
1483 |
|
|
int toRead, index; |
1484 |
|
|
Tcl_Obj *cmdPtr; |
1485 |
|
|
static char* switches[] = { "-size", "-command", NULL }; |
1486 |
|
|
enum { FcopySize, FcopyCommand }; |
1487 |
|
|
|
1488 |
|
|
if ((objc < 3) || (objc > 7) || (objc == 4) || (objc == 6)) { |
1489 |
|
|
Tcl_WrongNumArgs(interp, 1, objv, |
1490 |
|
|
"input output ?-size size? ?-command callback?"); |
1491 |
|
|
return TCL_ERROR; |
1492 |
|
|
} |
1493 |
|
|
|
1494 |
|
|
/* |
1495 |
|
|
* Parse the channel arguments and verify that they are readable |
1496 |
|
|
* or writable, as appropriate. |
1497 |
|
|
*/ |
1498 |
|
|
|
1499 |
|
|
arg = Tcl_GetString(objv[1]); |
1500 |
|
|
inChan = Tcl_GetChannel(interp, arg, &mode); |
1501 |
|
|
if (inChan == (Tcl_Channel) NULL) { |
1502 |
|
|
return TCL_ERROR; |
1503 |
|
|
} |
1504 |
|
|
if ((mode & TCL_READABLE) == 0) { |
1505 |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"", |
1506 |
|
|
Tcl_GetString(objv[1]), |
1507 |
|
|
"\" wasn't opened for reading", (char *) NULL); |
1508 |
|
|
return TCL_ERROR; |
1509 |
|
|
} |
1510 |
|
|
arg = Tcl_GetString(objv[2]); |
1511 |
|
|
outChan = Tcl_GetChannel(interp, arg, &mode); |
1512 |
|
|
if (outChan == (Tcl_Channel) NULL) { |
1513 |
|
|
return TCL_ERROR; |
1514 |
|
|
} |
1515 |
|
|
if ((mode & TCL_WRITABLE) == 0) { |
1516 |
|
|
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp), "channel \"", |
1517 |
|
|
Tcl_GetString(objv[1]), |
1518 |
|
|
"\" wasn't opened for writing", (char *) NULL); |
1519 |
|
|
return TCL_ERROR; |
1520 |
|
|
} |
1521 |
|
|
|
1522 |
|
|
toRead = -1; |
1523 |
|
|
cmdPtr = NULL; |
1524 |
|
|
for (i = 3; i < objc; i += 2) { |
1525 |
|
|
if (Tcl_GetIndexFromObj(interp, objv[i], switches, "switch", 0, |
1526 |
|
|
(int *) &index) != TCL_OK) { |
1527 |
|
|
return TCL_ERROR; |
1528 |
|
|
} |
1529 |
|
|
switch (index) { |
1530 |
|
|
case FcopySize: |
1531 |
|
|
if (Tcl_GetIntFromObj(interp, objv[i+1], &toRead) != TCL_OK) { |
1532 |
|
|
return TCL_ERROR; |
1533 |
|
|
} |
1534 |
|
|
break; |
1535 |
|
|
case FcopyCommand: |
1536 |
|
|
cmdPtr = objv[i+1]; |
1537 |
|
|
break; |
1538 |
|
|
} |
1539 |
|
|
} |
1540 |
|
|
|
1541 |
|
|
return TclCopyChannel(interp, inChan, outChan, toRead, cmdPtr); |
1542 |
|
|
} |
1543 |
|
|
|
1544 |
|
|
/* End of tcliocmd.c */ |