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+'\"
+'\" Copyright (c) 2015 Jan Nijtmans <jan.nijtmans@gmail.com>
+'\" Copyright (c) 2015 Christian Werner <chw@ch-werner.de>
+'\" Copyright (c) 2017 Sean Woods <yoda@etoyoc.com>
+'\"
+'\" See the file "license.terms" for information on usage and redistribution
+'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
+'\"
+.TH Tclzipfs 3 8.7 Tcl "Tcl Library Procedures"
+.so man.macros
+.BS
+.SH NAME
+TclZipfs_AppHook, Tclzipfs_Mount, TclZipfs_MountBuffer, Tclzipfs_Unmount \- handle ZIP files as Tcl virtual filesystems
+.SH SYNOPSIS
+.nf
+int
+\fBTclZipfs_AppHook(\fIargcPtr, argvPtr\fR)
+.sp
+int
+\fBTclzipfs_Mount\fR(\fIinterp, mountpoint, zipname, password\fR)
+.sp
+int
+\fBTclZipfs_MountBuffer\fR(\fIinterp, mountpoint, data, dataLen, copy\fR)
+.sp
+int
+\fBTclzipfs_Unmount\fR(\fIinterp, mountpoint\fR)
+.fi
+.SH ARGUMENTS
+.AS Tcl_Interp *mountpoint in
+.AP "int" *argcPtr in
+Pointer to a variable holding the number of command line arguments from
+\fBmain\fR().
+.AP "char" ***argvPtr in
+Pointer to an array of strings containing the command line arguments to
+\fBmain\fR().
+.AP Tcl_Interp *interp in
+Interpreter in which the ZIP file system is mounted.  The interpreter's result is
+modified to hold the result or error message from the script.
+.AP "const char" *zipname in
+Name of a ZIP file. Must not be NULL when either mounting or unmounting a ZIP.
+.AP "const char" *mountpoint in
+Name of a mount point, which must be a legal Tcl file or directory name. May
+be NULL to query current mount points.
+.AP "const char" *password in
+An (optional) password. Use NULL if no password is wanted to read the file.
+.AP "unsigned char" *data in
+A data buffer to mount. The data buffer must hold the contents of a ZIP
+archive, and must not be NULL.
+.AP size_t dataLen in
+The number of bytes in the supplied data buffer argument, \fIdata\fR.
+.AP int copy in
+If non-zero, the ZIP archive in the data buffer will be internally copied
+before mounting, allowing the data buffer to be disposed once
+\fBTclZipfs_MountBuffer\fR returns. If zero, the caller guarantees that the
+buffer will be valid to read from for the duration of the mount.
+.BE
+.SH DESCRIPTION
+\fBTclZipfs_AppHook\fR is a utility function to perform standard application
+initialization procedures, taking into account available ZIP archives as
+follows:
+.IP [1]
+If the current application has a mountable ZIP archive, that archive is
+mounted under \fIZIPFS_VOLUME\fB/app\fR as a read-only Tcl virtual file
+system. \fIZIPFS_VOLUME\fR is usually \fB//zipfs:\fR on all platforms, but
+\fBzipfs:\fR may also be used on Windows (due to differences in the
+platform's filename parsing).
+.IP [2]
+If a file named \fBmain.tcl\fR is located in the root directory of that file
+system (i.e., at \fIZIPROOT\fB/app/main.tcl\fR after the ZIP archive is
+mounted as described above) it is treated as the startup script for the
+process.
+.IP [3]
+If the file \fIZIPROOT\fB/app/tcl_library/init.tcl\fR is present, the
+\fBtcl_library\fR global variable in the initial Tcl interpreter is set to
+\fIZIPROOT\fB/app/tcl_library\fR.
+.IP [4]
+If the directory \fBtcl_library\fR was not found in the main application
+mount, the system will then search for it as either a VFS attached to the
+application dynamic library, or as a zip archive named
+\fBlibtcl_\fImajor\fB_\fIminor\fB_\fIpatchlevel\fB.zip\fR either in the
+present working directory or in the standard Tcl install location. (For
+example, the Tcl 8.7.2 release would be searched for in a file
+\fBlibtcl_8_7_2.zip\fR.) That archive, if located, is also mounted read-only.
+.PP
+On Windows, \fBTclZipfs_AppHook\fR has a slightly different signature, since
+it uses WCHAR in stead of char. As a result, it requires your application to
+be compiled with the UNICODE preprocessor symbol defined (e.g., via the
+\fB-DUNICODE\fR compiler flag).
+.PP
+The result of \fBTclZipfs_AppHook\fR is a Tcl result code (e.g., \fBTCL_OK\fR
+when the function is successful). The function \fImay\fR modify the variables
+pointed to by \fIargcPtr\fR and \fIargvPtr\fR to remove arguments; the
+current implementation does not do so, but callers \fIshould not\fR assume
+that this will be true in the future.
+.PP
+\fBTclzipfs_Mount\fR mounts the ZIP archive \fIzipname\fR on the mount point
+given in \fImountpoint\fR using the optional ZIP password \fIpassword\fR.
+Errors during that process are reported in the interpreter \fIinterp\fR.  If
+\fImountpoint\fR is a NULL pointer, information on all currently mounted ZIP
+file systems is written into \fIinterp\fR's result as a sequence of mount
+points and ZIP file names.  The result of this call is a standard Tcl result
+code.
+.PP
+\fBTclzipfs_MountBuffer\fR mounts the ZIP archive in the buffer pointed to by
+\fIdata\fR on the mount point given in \fImountpoint\fR. The ZIP archive is
+assumed to be not password protected.  Errors during that process are reported
+in the interpreter \fIinterp\fR. The \fIcopy\fR argument determines whether
+the buffer is internally copied before mounting or not. The result of this
+call is a standard Tcl result code.
+.PP
+\fBTclzipfs_Unmount\fR undoes the effect of \fBTclzipfs_Mount\fR, i.e., it
+unmounts the mounted ZIP file system that was mounted from \fIzipname\fR (at
+\fImountpoint\fR). Errors are reported in the interpreter \fIinterp\fR.  The
+result of this call is a standard Tcl result code.
+.PP
+\fBTclZipfs_AppHook\fR can not be used in stub-enabled extensions.
+.SH "SEE ALSO"
+zipfs(n)
+.SH KEYWORDS
+compress, filesystem, zip