help.c

CC386 is a general-purpose 32-bit C compiler. It is not an optimizing compiler but given that the co

/* 
Copyright 2001-2003 Free Software Foundation, Inc.

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.  

You may contact the author at:

mailto::[e-mail]

or by snail mail at:

David Lindauer
850 Washburn Ave Apt 99
Louisville, KY 40222

 **********************************************************************

HELP.C provides an interface to the help mechanism, either platform
sdk, msdn, or winhelp files depending on what was specified.

 **********************************************************************

 */
#include <windows.h>
#include <commctrl.h>
#include <stdio.h>
#include "htmlhelp.h"
#include "header.h"
extern char szInstallPath[];
char szHelpPath[1024]; // so editing will work...
int HelpMode;
extern HWND hwndFrame;
static char htmlFile[256];
HMODULE htmlLib;
static FARPROC HelpFunc;
int FindColFile(char *buf)
{
    HANDLE h;
    WIN32_FIND_DATA str;
    char findstr[256];
    strcpy(findstr, buf);
    strcat(findstr, "*.col");
    h = FindFirstFile(findstr, &str);
    if (h != INVALID_HANDLE_VALUE)
    {
        CloseHandle(h);
        strcat(buf, str.cFileName);
        return TRUE;
    }
    return FALSE;
}

//-------------------------------------------------------------------------

int MSDNHelpFile(char *buf)
{
    HKEY key;
    if (HelpMode > HELP_MSDN)
        return FALSE;
    if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, "software\\microsoft\\visualstudio", 0,
        KEY_READ, &key) == ERROR_SUCCESS)
    {
        int index = 0;
        char name[1024];
        int size = 256;
        FILETIME t;
        int rv;
        do
        {
            memset(name, 0, 1024);
            size = 256;
            rv = RegEnumKeyEx(key, index++, name, &size, 0, NULL, NULL, &t);
            if (rv == ERROR_SUCCESS || rv == ERROR_MORE_DATA)
            {
                HKEY key2;
                strcat(name, "\\setup");
                if (RegOpenKeyEx(key, name, 0, KEY_READ, &key2) ==
                    ERROR_SUCCESS)
                {
                    int index = 0;
                    int rv;
                    do
                    {
                        memset(name, 0, 1024);
                        size = 256;
                        rv = RegEnumKeyEx(key2, index++, name, &size, 0, NULL,
                            NULL, &t);
                        if (rv == ERROR_SUCCESS || rv == ERROR_MORE_DATA)
                        {
                            if (!strncmp(name, "MSDN Library", 12))
                            {
                                HKEY key3;
                                if (RegOpenKeyEx(key2, name, 0, KEY_READ, &key3)
                                    == ERROR_SUCCESS)
                                {
                                    size = 256;
                                    if (RegQueryValueEx(key3, "ProductDir", 0,
                                        NULL, buf, &size) == ERROR_SUCCESS)
                                    {
                                        RegCloseKey(key3);
                                        RegCloseKey(key2);
                                        RegCloseKey(key);
                                        if (buf[strlen(buf) - 1] != '\\')
                                            strcat(buf, "\\");
                                        return FindColFile(buf);
                                    }
                                    RegCloseKey(key3);
                                }
                            }
                        }
                    }
                    while (rv == ERROR_SUCCESS || rv == ERROR_MORE_DATA);
                    RegCloseKey(key2);
                }
            }
        }
        while (rv == ERROR_SUCCESS || rv == ERROR_MORE_DATA)
            ;
        RegCloseKey(key);
    }
    return FALSE;
}

//-------------------------------------------------------------------------

int PlatformSDKHelpFile(char *buf)
{
    HKEY key;
    int size = 256;

    if (HelpMode > HELP_SDK)
        return FALSE;
    if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, 
        "software\\microsoft\\platformsdk\\directories", 0, KEY_READ, &key) ==
        ERROR_SUCCESS)
    {
        if (RegQueryValueEx(key, "Install Dir", 0, NULL, buf, &size) ==
            ERROR_SUCCESS)
        {
            RegCloseKey(key);
            if (buf[strlen(buf) - 1] != '\\')
                strcat(buf, "\\");
            strcat(buf, "help\\platsdk.col");
            return TRUE;
        }
        RegCloseKey(key);
    }
    return FALSE;

}

//-------------------------------------------------------------------------

int SpecifiedHelpFile(char *buf)
{
    FILE *fil = fopen(szHelpPath, "r");
    if (fil)
    {
        strcpy(buf, szHelpPath);
        fclose(fil);
        return TRUE;
    }
    return FALSE;
}

//-------------------------------------------------------------------------

int InitHelp(void)
{
    if (htmlLib)
        return TRUE;
    strcpy(szHelpPath, (char*)ProfileToString("HelpPath", ""));
    HelpMode = ProfileToInt("HelpMode", HELP_MSDN);
    if (!MSDNHelpFile(htmlFile))
        if (!PlatformSDKHelpFile(htmlFile))
            if (!SpecifiedHelpFile(htmlFile))
                return FALSE;
    htmlLib = LoadLibrary("hhctrl.ocx");
    if (htmlLib)
    {
        HelpFunc = GetProcAddress(htmlLib, "HtmlHelpA");
        return TRUE;
    }

    return FALSE;
}

//-------------------------------------------------------------------------

void RundownHelp(void)
{
    if (htmlLib)
    {
        FreeLibrary(htmlLib);
        htmlLib = 0;
    }
    StringToProfile("HelpPath", szHelpPath);
    IntToProfile("HelpMode", HelpMode);
}

//-------------------------------------------------------------------------

int ShowHelp(char *string)
{
    HH_AKLINK hl;
    HMODULE lib;
    if (!InitHelp())
        return FALSE;
    if (HelpMode == HELP_SPECIFIED && (strstr(htmlFile, ".HLP") || strstr
        (htmlFile, ".hlp")))
    {
        WinHelp(hwndFrame, htmlFile, HELP_KEY, (DWORD)string);
        return TRUE;
    }
    HelpFunc(GetDesktopWindow(), htmlFile, HH_DISPLAY_TOPIC, 0);
    return TRUE;
    hl.cbStruct = sizeof(HH_AKLINK);
    hl.fReserved = FALSE;
    hl.pszKeywords = string;
    hl.pszUrl = NULL;
    hl.pszMsgText = NULL;
    hl.pszMsgTitle = NULL;
    hl.pszWindow = NULL;
    hl.fIndexOnFail = TRUE;
    HelpFunc(GetDesktopWindow(), htmlFile, HH_KEYWORD_LOOKUP, &hl);
    return TRUE;
}

//-------------------------------------------------------------------------

void ContextHelp(int id)
{
    char buf[256];
    strcpy(buf, szInstallPath);
    strcat(buf, "\\help\\ccide.hlp");
    WinHelp(0, buf, HELP_CONTEXT, id);
}