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/** \file helphelper.c
* use OSX Help system
*/
/* XTrkCad - Model Railroad CAD
* Copyright (C) 2015 Martin Fischer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#import <CoreFoundation/CoreFoundation.h>
#import <Carbon/Carbon.h>
#include <stdio.h>
#include <stdlib.h>
#include <dirent.h>
#include <sys/time.h>
#include <signal.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#define HELPCOMMANDPIPE "/tmp/helppipe"
#define EXITCOMMAND "##exit##"
OSStatus MyGoToHelpPage (CFStringRef pagePath, CFStringRef anchorName)
{
CFBundleRef myApplicationBundle = NULL;
CFStringRef myBookName = NULL;
OSStatus err = noErr;
printf("HelpHelper: Started to look for help\n");
myApplicationBundle = CFBundleGetMainBundle();
if (myApplicationBundle == NULL) {
printf("HelpHelper: Error - No Application Bundle\n");
err = fnfErr;
return err;
}
printf("HelpHelper: Application Bundle Found\n");
myBookName = CFBundleGetValueForInfoDictionaryKey(
myApplicationBundle,
CFSTR("CFBundleHelpBookName"));
if (myBookName == NULL) {
myBookName = CFStringCreateWithCString(NULL, "XTrackCAD Help", kCFStringEncodingMacRoman);
printf("HelpHelper: Defaulting to 'XTrackCAD Help'\n" );
err = fnfErr;
return err;
}
printf("HelpHelper: BookName dictionary name %s found\n",CFStringGetCStringPtr(myBookName, kCFStringEncodingMacRoman));
if (CFGetTypeID(myBookName) != CFStringGetTypeID()) {
printf("HelpHelper: Error - BookName is not a string\n" );
err = paramErr;
}
if (err == noErr) {
err = AHGotoPage (myBookName, pagePath, anchorName);
if (err != noErr) {
printf("HelpHelper: Error in AHGoToPage('%s','%s')\n",CFStringGetCStringPtr(myBookName, kCFStringEncodingMacRoman), CFStringGetCStringPtr(pagePath, kCFStringEncodingMacRoman));
}
}
return err;
};
int displayHelp(char* name) {
CFStringRef str = CFStringCreateWithCString(NULL,name,kCFStringEncodingMacRoman);
OSStatus err = MyGoToHelpPage(str, NULL);
if (err != noErr) printf("HelpHelper: MyGoToHelpPage had error %d\n", err);
return err;
};
int
main( int argc, char **argv )
{
int handleOfPipe = 0;
char buffer[ 100 ];
char issue[ 100 ];
int len;
int finished = 0;
int numBytes = 0;
int numBytes2 = 0;
printf( "HelpHelper: starting!\n" );
handleOfPipe = open( HELPCOMMANDPIPE, O_RDONLY );
if( handleOfPipe ) {
printf( "HelpHelper: opened pipe for reading\n" );
while( !finished ) {
printf( "HelpHelper: reading from pipe...\n" );
numBytes = read( handleOfPipe, &len, sizeof( int ));
if( numBytes > 0 )
printf( "HelpHelper: read %d bytes\n", numBytes );
if( numBytes == sizeof(int)) {
printf( "HelpHelper: Expecting %d bytes\n", len );
numBytes2 = read( handleOfPipe, buffer, len + 1 );
buffer[numBytes2] = '\0';
if (numBytes2 > 0)
printf( "HelpHelper: Display help on: %s\n", buffer );
if( !strcmp(buffer, EXITCOMMAND )) {
finished = 1;
} else {
if (displayHelp(buffer) != 0)
printf( "HelpHelper: Error\n");
}
}
if( numBytes <= 0 ) {
printf( "HelpHelper: exiting on pipe error\n" );
exit( 1 );
}
}
} else {
printf( "HelpHelper: Could not open pipe for reading\n" );
}
printf( "HelpHelper: exiting!" );
exit( 0 );
};
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