diff options
Diffstat (limited to 'doc/FileSystem.3')
| -rw-r--r-- | doc/FileSystem.3 | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/doc/FileSystem.3 b/doc/FileSystem.3 index 66cb596..00a38da 100644 --- a/doc/FileSystem.3 +++ b/doc/FileSystem.3 @@ -4,7 +4,7 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: FileSystem.3,v 1.37 2003/12/16 18:20:49 vincentdarley Exp $ +'\" RCS: @(#) $Id: FileSystem.3,v 1.38 2004/01/21 19:59:33 vincentdarley Exp $ '\" .so man.macros .TH Filesystem 3 8.4 Tcl "Tcl Library Procedures" @@ -499,12 +499,16 @@ part of the path). The separator is returned as a Tcl_Obj containing a string of length 1. If the path is invalid, NULL is returned. .PP -\fBTcl_FSJoinPath\fR takes the given Tcl_Obj, which should be a valid list, -and returns the path object given by considering the first 'elements' -elements as valid path segments. If elements < 0, we use the entire -list. +\fBTcl_FSJoinPath\fR takes the given Tcl_Obj, which should be a valid +list (which is allowed to have a refCount of zero), and returns the path +object given by considering the first 'elements' elements as valid path +segments. If elements < 0, we use the entire list. .PP -Returns object with refCount of zero, containing the joined path. +Returns object, typically with refCount of zero (but it could be shared +under some conditions) , containing the joined path. The caller must +add a refCount to the object before using it. In particular, the +returned object could be an element of the given list, so freeing the +list might free the object prematurely if no refCount has been taken. .PP \fBTcl_FSSplitPath\fR takes the given Tcl_Obj, which should be a valid path, and returns a Tcl List object containing each segment of that path as @@ -539,7 +543,11 @@ course increment the refCount if it wishes to maintain a copy for longer. valid path or NULL, and joins onto it the array of paths segments given. .PP -Returns object with refCount of zero, containing the joined path. +Returns object, typically with refCount of zero (but it could be shared +under some conditions), containing the joined path. The caller must +add a refCount to the object before using it. If any of the objects +passed into this function (pathPtr or path elements) have a refCount +of zero, they will be freed when this function returns. .PP \fBTcl_FSConvertToPathType\fR tries to convert the given Tcl_Obj to a valid Tcl path type, taking account of the fact that the cwd may have changed @@ -600,8 +608,12 @@ have non-string-based native representations (for example, on MacOS, a representation using a fileSpec of FSRef structure would probably be more efficient). On Windows a full Unicode representation would allow for paths of unlimited length. Currently the representation is simply a -character string containing the complete, absolute normalized path in -the native encoding. If for some reason a non-absolute or +character string which may contain either the relative path or a +complete, absolute normalized path in the native encoding (complex +conditions dictate which of these will be provided, so neither can be +relied upon, unless the path is known to be absolute). If you need a +native path which must be absolute, then you should ask for the native +version of a normalized path. If for some reason a non-absolute, non-normalized version of the path is needed, that must be constructed separately (e.g. using \fBTcl_FSGetTranslatedPath\fR). .PP |