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Annotation of mstools/samples/porttool/ptfind.c, revision 1.1

1.1     ! root        1: #include "PortTool.h"
        !             2: 
        !             3: // global search string
        !             4: char   lpszSearch[MAXSEARCHSTRING+1] = "";
        !             5: HWND   hDlgSearch;
        !             6: 
        !             7: FINDREPLACE    frSearch;
        !             8: 
        !             9: 
        !            10: // compare two substrings
        !            11: BOOL WINAPI RealSlowCompare (WORD, char *, char *);
        !            12: BOOL WINAPI RealSlowCompare (
        !            13:     WORD    wCase,
        !            14:     char    *lpszSubject,
        !            15:     char    *lpszTarget)
        !            16: {
        !            17:     if (wCase)
        !            18:        {
        !            19:        while (*lpszTarget)
        !            20:            if (*lpszTarget++ != *lpszSubject++)
        !            21:                return FALSE;
        !            22:        }
        !            23:     else
        !            24:        {
        !            25:        // convert to lower case before comparing
        !            26:        CharLower ((char *)lpszTarget);
        !            27:        while (*lpszTarget)
        !            28:            if (*lpszTarget++ != (CHAR)(DWORD)CharLower ((char *)(DWORD)(BYTE)*lpszSubject++))
        !            29:                return FALSE;
        !            30:        }
        !            31:     return TRUE;
        !            32: }
        !            33: 
        !            34: 
        !            35: 
        !            36: 
        !            37: // invoke the common search/replace dialog
        !            38: BOOL WINAPI FindDialog (
        !            39:     HWND    hWnd,
        !            40:     WORD    wCase,
        !            41:     WORD    wDir,
        !            42:     char    *lpszInit)
        !            43: {
        !            44:     frSearch.lStructSize      = sizeof (FINDREPLACE);
        !            45:     frSearch.hwndOwner       = hWnd;
        !            46:     frSearch.hInstance       = (HANDLE)GetWindowLong (hWnd, GWL_HINSTANCE);
        !            47:     frSearch.Flags           = 0;
        !            48: 
        !            49:     // if wCase, case sensitive
        !            50:     if (wCase)
        !            51:        frSearch.Flags        |= FR_MATCHCASE;
        !            52:     // if wDir, search forward
        !            53:     if (wDir)
        !            54:        frSearch.Flags        |= FR_DOWN;
        !            55: 
        !            56:     frSearch.lpstrFindWhat    = lpszInit;
        !            57:     frSearch.lpstrReplaceWith = NULL;
        !            58:     frSearch.wFindWhatLen     = MAXSEARCHSTRING+1;
        !            59:     frSearch.wReplaceWithLen  = 0;
        !            60:     frSearch.lCustData       = NULL;
        !            61:     frSearch.lpfnHook        = NULL;
        !            62:     frSearch.lpTemplateName   = NULL;
        !            63: 
        !            64:     // call common search dialog
        !            65:     if (hDlgSearch = FindText (&frSearch))
        !            66:        return TRUE;
        !            67:     else
        !            68:        return FALSE;
        !            69: }
        !            70: 
        !            71: 
        !            72: 
        !            73: // perform the actual text searching in the edit control data
        !            74: BOOL WINAPI LocateText (
        !            75:     HWND       hWnd,
        !            76:     WORD       wCase,
        !            77:     WORD       wDir,
        !            78:     char       *lpszStr)
        !            79: {
        !            80:     UINT    uBegSel, uEndSel, uOrgBegSel, uOrgEndSel;
        !            81:     HANDLE  hEditData;
        !            82:     HWND    hWndEdit = (HANDLE)GetWindowLong (hWnd, WL_HWNDEDIT);
        !            83:     char    *lpEditData;
        !            84:     UINT    uLen;
        !            85:     int     nStrLen = strlen (lpszStr);
        !            86:     int     nChars;
        !            87: 
        !            88:     // test for valid string
        !            89:     if (!*lpszStr)
        !            90:        return FALSE;
        !            91: 
        !            92:     // locate beginning of selected text
        !            93:     SendMessage (hWndEdit, EM_GETSEL, (UINT)&uBegSel, (UINT)&uEndSel);
        !            94:     uOrgBegSel = uBegSel;
        !            95:     uOrgEndSel = uEndSel;
        !            96: 
        !            97:     // get length of the text
        !            98:     uLen = (UINT)SendMessage (hWndEdit, WM_GETTEXTLENGTH, 0, 0);
        !            99: 
        !           100:     // Get handle to edit text data and lock it
        !           101:     hEditData = (HANDLE)SendMessage (hWndEdit, EM_GETHANDLE, 0, 0);
        !           102:     lpEditData = LocalLock (hEditData);
        !           103: 
        !           104:     // advance starting point past selection one char
        !           105:     lpEditData += (wDir ? ++uBegSel : --uBegSel);
        !           106: 
        !           107:     // count characters to search (either forward to end of file or back to beginning)
        !           108:     if (wDir)
        !           109:        nChars = (int)(uLen - uBegSel + 1 - nStrLen);
        !           110:     else
        !           111:        nChars = (int)uBegSel;
        !           112: 
        !           113:     // compare character by character for a substring match
        !           114:     while (nChars >= nStrLen)
        !           115:        {
        !           116:        // compare this substring for a match
        !           117:        if (RealSlowCompare (wCase, lpEditData, lpszStr))
        !           118:            {
        !           119:            // string found, cleanup and go away
        !           120:            LocalUnlock(hEditData);
        !           121: 
        !           122:            // scroll parent edit control and select offending text
        !           123:            SendMessage (hWndEdit, EM_LINESCROLL, 0,
        !           124:                SendMessage (hWndEdit, EM_LINEFROMCHAR, uBegSel, 0) -
        !           125:                SendMessage (hWndEdit, EM_GETFIRSTVISIBLELINE, 0, 0));
        !           126: 
        !           127:            // Select the located string
        !           128:            uEndSel = uBegSel + nStrLen;
        !           129:            SendMessage(hWndEdit, EM_SETSEL, uBegSel, uEndSel);
        !           130: 
        !           131:            // return success
        !           132:            return TRUE;
        !           133:            }
        !           134: 
        !           135:        nChars--;
        !           136: 
        !           137:        // increment/decrement start position by 1
        !           138:        lpEditData += (wDir ? 1 : -1);
        !           139:        wDir ? uBegSel++ : uBegSel--;
        !           140:        }
        !           141: 
        !           142:     LocalUnlock (hEditData);
        !           143:     SendMessage (hWndEdit, EM_SETSEL, uOrgBegSel, uOrgEndSel);
        !           144: 
        !           145:     // return failed search
        !           146:     return FALSE;
        !           147: }

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