tclAppleHelp

What: tclAppleHelp

 Where: http://tk-components.sourceforge.net/tclapplehelp/index.html
        http://developer.apple.com/documentation/Carbon/Reference/Apple_Help/index.html
        http://developer.apple.com/documentation/Carbon/Conceptual/ProvidingUserAssitAppleHelp/index.html
 Description: [Critcl] wrapper for Apple Carbon Help API functions.
        Currently at version 1.1 .
 Updated: 03/2007
 Contact: See web site

See [L1 ] for the discussion of the Carbon Help API, and [L2 ] for discussion of how to prepare and deploy user documentation in the Apple Help format. Thanks to Daniel Steffen for assistance with specific points of the code.

Kevin Walzer September 27, 2005

 #!/bin/sh
 #
 # tclAppleHelp.tcl
 #
 # Critcl wrapper for Apple Carbon Help API. Implements most commonly used
 # functions.
 #
 # Process this file with "critcl -pkg" to build a loadable Tcl package
 # extension.
 #
 # Copyright (c) 2005, Kevin Walzer.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are met:
 #
 # Redistributions of source code must retain the above copyright notice, this
 # list of conditions and the following disclaimer.
 #
 # Redistributions in binary form must reproduce the above copyright notice, this
 # list of conditions and the following disclaimer in the documentation and/or
 # other materials provided with the distribution.
 #
 # Neither the name of the authors nor the names of its contributors may be used
 # to endorse or promote products derived from this software without specific
 # prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #
 # \
 exec critcl -pkg "$0" "$@"

 package require critcl
 if {![::critcl::compiling]} {error "No compiler found"}

 package provide tclAppleHelp 1.0

 namespace eval tclAppleHelp {

    ::critcl::framework Carbon

    ::critcl::ccode {
        #include <Carbon/Carbon.h>

        static char *OSErrDesc(OSErr err) {
            static char desc[255];
            sprintf(desc, "OS Error: %d.", err);
            return desc;
        }
    }

    # tclAppleHelp::RegisterHelpBook
    #
    # This command registers the Info.plist help book on application launch.

    ::critcl::cproc RegisterHelpBook {Tcl_Interp* ip} ok {
        CFBundleRef myApplicationBundle;
        CFURLRef myBundleURL;
        FSRef myBundleRef;
        Boolean result;
        OSStatus err;

        myApplicationBundle = CFBundleGetMainBundle();
        if (myApplicationBundle == NULL) {
            Tcl_AppendResult(ip, "CFBundleGetMainBundle failed", NULL);
            return TCL_ERROR;
        }
        myBundleURL = CFBundleCopyBundleURL(myApplicationBundle);
        if (myBundleURL == NULL) {
            Tcl_AppendResult(ip, "CFBundleCopyBundleURL failed", NULL);
            return TCL_ERROR;
        }
        result = CFURLGetFSRef(myBundleURL, &myBundleRef);
        CFRelease(myBundleURL);
        if (!result) {
            Tcl_AppendResult(ip, "CFURLGetFSRef failed", NULL);
            return TCL_ERROR;
        }
        err = AHRegisterHelpBook(&myBundleRef);
        if (err != noErr) {
            Tcl_AppendResult(ip, "Could not register help book: ",
                    OSErrDesc(err), NULL);
            return TCL_ERROR;
        }
        return TCL_OK;
    }

    # tclAppleHelp::GotoPage myBookName
    #
    # This command loads a help book with the specified name.

    ::critcl::cproc GotoPage {Tcl_Interp* ip char* myBookName} ok {
        CFStringRef myCFStrBookName;
        OSStatus err;

        myCFStrBookName = CFStringCreateWithCString(NULL, myBookName,
                kCFStringEncodingUTF8);
        if (myCFStrBookName == NULL) {
            Tcl_AppendResult(ip, "CFStringCreateWithCString failed", NULL);
            return TCL_ERROR;
        }
        err = AHGotoPage(myCFStrBookName, NULL, NULL);
        CFRelease(myCFStrBookName);
        if (err != noErr) {
            Tcl_AppendResult(ip, "Could not load help book: ",
                    OSErrDesc(err), NULL);
            return TCL_ERROR;
        }
        return TCL_OK;
    }
 }

See MacOS, Critcl, Daniel Steffen.

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