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author | vincentdarley <vincentdarley> | 2001-07-31 19:12:05 (GMT) |
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committer | vincentdarley <vincentdarley> | 2001-07-31 19:12:05 (GMT) |
commit | c1335a91a0a2d1b2b776c7bbb5763b90e3d629ad (patch) | |
tree | 1ec44ca71eb2e561881490f7766175daa65dc9eb /doc/OpenFileChnl.3 | |
parent | 2414705dd748a119ffa0a2976ed71abc283aff11 (diff) | |
download | tcl-c1335a91a0a2d1b2b776c7bbb5763b90e3d629ad.zip tcl-c1335a91a0a2d1b2b776c7bbb5763b90e3d629ad.tar.gz tcl-c1335a91a0a2d1b2b776c7bbb5763b90e3d629ad.tar.bz2 |
Changes from TIP#17 "Redo Tcl's filesystem"
The following files were impacted.
* doc/Access.3:
* doc/FileSystem.3:
* doc/OpenFileChnl.3:
* doc/file.n:
* doc/glob.n:
* generic/tcl.decls:
* generic/tcl.h:
* generic/tclCmdAH.c:
* generic/tclCmdIL.c:
* generic/tclCmdMZ.c:
* generic/tclDate.c:
* generic/tclDecls.h:
* generic/tclEncoding.c:
* generic/tclFCmd.c:
* generic/tclFileName.c:
* generic/tclGetDate.y:
* generic/tclIO.c:
* generic/tclIOCmd.c:
* generic/tclIOUtil.c:
* generic/tclInt.decls:
* generic/tclInt.h:
* generic/tclIntDecls.h:
* generic/tclLoad.c:
* generic/tclStubInit.c:
* generic/tclTest.c:
* generic/tclUtil.c:
* library/init.tcl:
* mac/tclMacFCmd.c:
* mac/tclMacFile.c:
* mac/tclMacInit.c:
* mac/tclMacPort.h:
* mac/tclMacResource.c:
* mac/tclMacTime.c:
* tests/cmdAH.test:
* tests/event.test:
* tests/fCmd.test:
* tests/fileName.test:
* tests/io.test:
* tests/ioCmd.test:
* tests/proc-old.test:
* tests/registry.test:
* tests/unixFCmd.test:
* tests/winDde.test:
* tests/winFCmd.test:
* unix/mkLinks:
* unix/tclUnixFCmd.c:
* unix/tclUnixFile.c:
* unix/tclUnixInit.c:
* unix/tclUnixPipe.c:
* win/tclWinFCmd.c:
* win/tclWinFile.c:
* win/tclWinInit.c:
* win/tclWinPipe.c
Diffstat (limited to 'doc/OpenFileChnl.3')
-rw-r--r-- | doc/OpenFileChnl.3 | 44 |
1 files changed, 40 insertions, 4 deletions
diff --git a/doc/OpenFileChnl.3 b/doc/OpenFileChnl.3 index 45d1410..eeafd08 100644 --- a/doc/OpenFileChnl.3 +++ b/doc/OpenFileChnl.3 @@ -4,13 +4,13 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: OpenFileChnl.3,v 1.9 2000/04/25 00:54:53 ericm Exp $ +'\" RCS: @(#) $Id: OpenFileChnl.3,v 1.10 2001/07/31 19:12:05 vincentdarley Exp $ .so man.macros .TH Tcl_OpenFileChannel 3 8.3 Tcl "Tcl Library Procedures" .BS '\" Note: do not modify the .SH NAME line immediately below! .SH NAME -Tcl_OpenFileChannel, Tcl_OpenCommandChannel, Tcl_MakeFileChannel, Tcl_GetChannel, Tcl_GetChannelNames, Tcl_GetChannelNamesEx, Tcl_RegisterChannel, Tcl_UnregisterChannel, Tcl_Close, Tcl_ReadChars, Tcl_Read, Tcl_GetsObj, Tcl_Gets, Tcl_WriteObj, Tcl_WriteChars, Tcl_Write, Tcl_Flush, Tcl_Seek, Tcl_Tell, Tcl_GetChannelOption, Tcl_SetChannelOption, Tcl_Eof, Tcl_InputBlocked, Tcl_InputBuffered, Tcl_Ungets \- buffered I/O facilities using channels +Tcl_OpenFileChannel, Tcl_OpenCommandChannel, Tcl_MakeFileChannel, Tcl_GetChannel, Tcl_GetChannelNames, Tcl_GetChannelNamesEx, Tcl_RegisterChannel, Tcl_UnregisterChannel, Tcl_DetachChannel, Tcl_IsStandardChannel, Tcl_Close, Tcl_ReadChars, Tcl_Read, Tcl_GetsObj, Tcl_Gets, Tcl_WriteObj, Tcl_WriteChars, Tcl_Write, Tcl_Flush, Tcl_Seek, Tcl_Tell, Tcl_GetChannelOption, Tcl_SetChannelOption, Tcl_Eof, Tcl_InputBlocked, Tcl_InputBuffered, Tcl_Ungets \- buffered I/O facilities using channels .SH SYNOPSIS .nf \fB#include <tcl.h>\fR @@ -46,6 +46,12 @@ int \fBTcl_UnregisterChannel\fR(\fIinterp, channel\fR) .sp int +\fBTcl_DetachChannel\fR(\fIinterp, channel\fR) +.sp +int +\fBTcl_IsStandardChannel\fR(\fIchannel\fR) +.sp +int \fBTcl_Close\fR(\fIinterp, channel\fR) .sp .VS 8.1 @@ -236,7 +242,11 @@ If an error occurs while opening the channel, \fBTcl_OpenFileChannel\fR returns NULL and records a POSIX error code that can be retrieved with \fBTcl_GetErrno\fR. In addition, if \fIinterp\fR is non-NULL, \fBTcl_OpenFileChannel\fR -leaves an error message in \fIinterp\fR's result after any error. +leaves an error message in \fIinterp\fR's result after any error. +As of Tcl 8.4, the object-based API \fBTcl_FSOpenFileChannel\fR should +be used in preference to \fBTcl_OpenFileChannel\fR wherever possible. +.PP + .PP The newly created channel is not registered in the supplied interpreter; to register it, use \fBTcl_RegisterChannel\fR, described below. @@ -339,7 +349,33 @@ interpreter, the channel is also closed and destroyed. Code not associated with a Tcl interpreter can call \fBTcl_UnregisterChannel\fR with \fIinterp\fR as NULL, to indicate to Tcl that it no longer holds a reference to that channel. If this is the last -reference to the channel, it will now be closed. +reference to the channel, it will now be closed. \fBTcl_UnregisterChannel\fR +is very similar to \fBTcl_DetachChannel\fR except that it will also +close the channel if no further references to it exist. + +.SH TCL_DETACHCHANNEL +.PP +\fBTcl_DetachChannel\fR removes a channel from the set of channels +accessible in \fIinterp\fR. After this call, Tcl programs will no longer be +able to use the channel's name to refer to the channel in that interpreter. +Beyond that, this command has no further effect. It cannot be used on +the standard channels (stdout, stderr, stdin), and will return +TCL_ERROR if passed one of those channels. +.PP +Code not associated with a Tcl interpreter can call +\fBTcl_DetachChannel\fR with \fIinterp\fR as NULL, to indicate to Tcl +that it no longer holds a reference to that channel. If this is the last +reference to the channel, unlike \fBTcl_UnregisterChannel\fR, +it will not be closed. + +.SH TCL_ISSTANDARDCHANNEL +.PP +\fBTcl_IsStandardChannel\fR tests whether a channel is one of the +three standard channels, stdin, stdout or stderr. If so, it returns +1, otherwise 0. +.PP +No attempt is made to check whether the given channel or the standard +channels are initialized or otherwise valid. .SH TCL_CLOSE .PP |