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- /*************************************************************
-
- This module contains subroutines for nead.c that specifically
- deal with the Open file interface. Most of the routines were
- taken from Charles Petzold's book "Programming the OS/2
- Presentation Manager" and were slightly modified.
-
- Procedures in this file:
- OpenFile() Asks user for new file name and opens it
- OpenFileProc() Dialog proc that prompts user for file name
- FillDirListBox() Fills the directory list box
- FillFileListBox() Fills the file list box
-
- **************************************************************/
- #include "nead.h"
-
- /************ External GLOBALS *******************************/
-
- extern CHAR szFileName[CCHMAXPATH];
- extern CHAR szEAName[MAXEANAME+1];
- extern USHORT usRetEAType;
- extern BOOL FILE_ISOPEN;
- extern BOOL FILE_CHANGED;
- extern BOOL COMMAND_LINE_FILE;
- extern HHEAP hhp;
- extern CHAR *pAlloc,*szEditBuf,*szAscii,*szScratch;
- extern HOLDFEA *pHoldFEA;
- extern DELETELIST *pDelList;
- extern EADATA ConvTable[EATABLESIZE];
-
- /*************************************************************/
-
-
- /*
- * Function name: OpenFile()
- *
- * Parameters: hwnd which is the current window handle.
- * usMode which will attempt to load the file from the command
- * line iff usMode == ARGFILE which is set in main(). Otherwise,
- * the selector box is brought up for the user to select from.
- *
- * Returns: TRUE iff a file is open upon exit.
- *
- * Purpose: This routine handles opening a new file. It will also query the
- * user for the disposition of the current file if it has been
- * modified before loading the new file.
- *
- * Usage/Warnings: Routine should be bullet proof as it does its own
- * error checking. It assumes that hwnd points to the
- * correct window with the name listbox in it.
- *
- * Calls: WriteEAs(), Free_FEAList()
- */
-
- BOOL OpenFile(HWND hwnd,USHORT usMode)
- {
- CHAR szOldFile[CCHMAXPATH];
- USHORT usRet;
-
- strcpy(szOldFile,szFileName); /* Save name of the currently open file */
-
- if(usMode != ARGFILE) /* It isn't the command line file */
- {
- if(!WinDlgBox(HWND_DESKTOP, /* Get the file name from the user */
- hwnd,
- OpenFileProc,
- (HMODULE) NULL,
- IDD_OPENBOX,
- NULL))
- {
- strcpy(szFileName,szOldFile); /* They canceled, restore old file */
- return(FILE_ISOPEN);
- }
- }
-
- if(FILE_CHANGED) /* Give them a chance to save modifications */
- {
- usRet=WinMessageBox(HWND_DESKTOP,hwnd,
- "The current file has been changed. Do you \
- wish to save the changes before proceeding?",
- "Warning",0,MB_YESNOCANCEL | MB_ICONQUESTION);
- switch(usRet)
- {
- case MBID_YES:
- WriteEAs(hwnd);
- break;
- case MBID_CANCEL:
- return FILE_ISOPEN;
- }
- }
-
- if(FILE_ISOPEN) /* Free up everything associated with the current file */
- {
- Free_FEAList(pHoldFEA,pDelList);
- FILE_ISOPEN = FALSE;
- }
-
- if(QueryEAs(hwnd,szFileName)) /* We were successful */
- {
- HOLDFEA *pFEA=pHoldFEA;
-
- FILE_ISOPEN = TRUE;
- FILE_CHANGED = FALSE;
-
- WinSendDlgItemMsg(hwnd, IDD_LBOX, LM_DELETEALL,0L,0L); /* Fill L-box */
-
- while(pFEA)
- {
- WinSendDlgItemMsg(hwnd, IDD_LBOX, LM_INSERTITEM,
- MPFROM2SHORT(LIT_END,0),
- MPFROMP(pFEA->szName));
- pFEA = pFEA->next;
- }
- }
- else /* We couldn't query the EAs */
- {
- *szFileName = '\000';
- WinSetDlgItemText(hwnd,IDD_FNAME,szFileName);
- return(FILE_ISOPEN = FALSE);
- }
- WinSetDlgItemText(hwnd,IDD_FNAME,szFileName);
- pDelList = NULL;
- return(TRUE);
- }
-
-
- /*
- * Function name: OpenFileProc()
- *
- * Parameters: hwnd, msg, mp1, mp2. Standard PM Dialog Proc params.
- * Expects no user pointer.
- *
- * Returns: TRUE if user selects OK, FALSE if Cancel is selected.
- *
- * Purpose: This proc handles the user interface to select a file name.
- * Some elementary checks are done to make sure the filename is
- * valid.
- *
- * Usage/Warnings: The interface is NOT foolproof as it is possible to
- * continue with a non-existant file name. Also, users
- * are not currently allowed to view/edit the EAs attached
- * to a directory.
- *
- * Calls: FillDirListBox(), FillFileListBox(), ParseFileName()
- */
-
- MRESULT EXPENTRY OpenFileProc(HWND hwnd, USHORT msg, MPARAM mp1, MPARAM mp2)
- {
- static CHAR szCurrentPath[CCHMAXPATH],szBuffer[CCHMAXPATH];
- CHAR szParsedPath[CCHMAXPATH];
- SHORT sSelect;
-
- switch(msg)
- {
- case WM_INITDLG:
- FillDirListBox(hwnd,szCurrentPath);
- FillFileListBox(hwnd);
- WinSendDlgItemMsg(hwnd, IDD_FILEEDIT,EM_SETTEXTLIMIT,
- MPFROM2SHORT(260,0),NULL);
- return 0L;
-
- case WM_CONTROL:
- if(SHORT1FROMMP(mp1) == IDD_DIRLIST || /* An lbox item is selected */
- SHORT1FROMMP(mp1) == IDD_FILELIST)
- {
- sSelect = SHORT1FROMMR( WinSendDlgItemMsg(hwnd, /* Get item->szBuffer */
- SHORT1FROMMP(mp1),
- LM_QUERYSELECTION, 0L, 0L));
-
- WinSendDlgItemMsg(hwnd, SHORT1FROMMP(mp1),
- LM_QUERYITEMTEXT,
- MPFROM2SHORT(sSelect, sizeof szBuffer),
- MPFROMP(szBuffer));
- }
-
- switch(SHORT1FROMMP(mp1))
- {
- case IDD_DIRLIST: /* Item was in the directory lbox */
- switch(SHORT2FROMMP(mp1))
- {
- case LN_ENTER: /* Go to the select drive/dir */
- if(*szBuffer == ' ')
- DosSelectDisk(*(szBuffer+1) - '@');
- else
- DosChDir(szBuffer, 0L);
-
- FillDirListBox(hwnd, szCurrentPath);
- FillFileListBox(hwnd);
-
- WinSetDlgItemText(hwnd, IDD_FILEEDIT, "");
- return 0L;
- }
- break;
-
- case IDD_FILELIST: /* Item was in the file lbox */
- switch(SHORT2FROMMP(mp1))
- {
- case LN_SELECT: /* Copy name to entry field */
- WinSetDlgItemText(hwnd, IDD_FILEEDIT, szBuffer);
- return 0L;
-
- case LN_ENTER: /* Try to query the file */
- if(ParseFileName(szFileName, szBuffer) != FILE_VALID)
- return 0; /* Some error, don't finish */
- WinDismissDlg(hwnd, TRUE);
- return 0L;
- }
- break;
- }
- break;
-
- case WM_COMMAND:
- switch(COMMANDMSG(&msg)->cmd)
- {
- case DID_OK: /* Try to query file in the entry field */
- WinQueryDlgItemText(hwnd, IDD_FILEEDIT,
- sizeof szBuffer, szBuffer);
-
- switch(ParseFileName(szParsedPath, szBuffer))
- {
- case FILE_INVALID: /* Can't open the file */
- WinAlarm(HWND_DESKTOP, WA_ERROR);
- FillDirListBox(hwnd, szCurrentPath);
- FillFileListBox(hwnd);
- return 0L;
-
- case FILE_PATH: /* It was an incomplete path name */
- strcpy(szCurrentPath,szBuffer);
- FillDirListBox(hwnd, szCurrentPath);
- FillFileListBox(hwnd);
- WinSetDlgItemText(hwnd, IDD_FILEEDIT, "");
- return 0L;
-
- case FILE_VALID: /* It was valid */
- strcpy(szFileName, szParsedPath);
- WinDismissDlg(hwnd, TRUE);
- return 0L;
- }
- break;
-
- case DID_CANCEL:
- WinDismissDlg(hwnd, FALSE);
- return 0L;
- }
- break;
- }
- return WinDefDlgProc(hwnd, msg, mp1, mp2);
- }
-
-
- /*
- * Function name: FillDirListBox()
- *
- * Parameters: hwnd points to the current window handle
- * pcCurrentPath points to a buffer which will be filled in
- * with the current path.
- *
- * Returns: VOID
- *
- * Purpose: This routine is called by OpenFileProc to fill in the directory
- * list box
- *
- * Usage/Warnings: Adequete error checking is NOT done on the return
- * values of the system calls. Also, it is remotely
- * possible that the calls to add to the list box could fail.
- *
- * Calls:
- */
-
- VOID FillDirListBox(HWND hwnd, CHAR *pcCurrentPath)
- {
- static CHAR szDrive [] = " :";
- FILEFINDBUF findbuf;
- HDIR hDir = 1;
- SHORT sDrive;
- USHORT usDriveNum, usCurPathLen, usSearchCount = 1;
- ULONG ulDriveMap;
-
- DosQCurDisk(&usDriveNum, &ulDriveMap);
- *pcCurrentPath = (CHAR)((CHAR) usDriveNum + '@');
- *(pcCurrentPath+1) = ':';
- *(pcCurrentPath+2) = '\\';
- usCurPathLen = CCHMAXPATH;
- DosQCurDir(0, pcCurrentPath + 3, &usCurPathLen);
-
- WinSetDlgItemText(hwnd, IDD_PATH, pcCurrentPath);
- WinSendDlgItemMsg(hwnd, IDD_DIRLIST, LM_DELETEALL, NULL, NULL);
-
- for(sDrive = ('A'-'A'); sDrive <= ('Z'-'A'); sDrive++)
- {
- if(ulDriveMap & (1L << sDrive))
- {
- *(szDrive+1) = (CHAR)((CHAR) sDrive + 'A');
-
- WinSendDlgItemMsg(hwnd, IDD_DIRLIST, LM_INSERTITEM,
- MPFROM2SHORT(LIT_END, 0),
- MPFROMP(szDrive));
- }
- }
- DosFindFirst("*", &hDir, FILE_DIRECTORY | FILE_ALL, &findbuf,
- sizeof findbuf, &usSearchCount, 0L);
- while(usSearchCount)
- {
- if((findbuf.attrFile & FILE_DIRECTORY) &&
- (findbuf.achName[0] != '.' || findbuf.achName[1]))
-
- WinSendDlgItemMsg(hwnd, IDD_DIRLIST, LM_INSERTITEM,
- MPFROM2SHORT(LIT_SORTASCENDING, 0),
- MPFROMP(findbuf.achName));
-
- if(DosFindNext(hDir, &findbuf, sizeof findbuf, &usSearchCount))
- break;
- }
- }
-
-
- /* This routine is called by OpenFileProc to fill the file list box */
-
- /*
- * Function name: FillFileListBox()
- *
- * Parameters: hwnd points to the current window handle
- *
- * Returns: VOID
- *
- * Purpose: This routine is called by OpenFileProc to fill in the file
- * list box with files in the current directory.
- *
- * Usage/Warnings: Adequete error checking is NOT done on the return
- * values of the system calls. Also, it is remotely
- * possible that the calls to add to the list box could fail.
- *
- * Calls:
- */
-
- VOID FillFileListBox(HWND hwnd)
- {
- FILEFINDBUF findbuf;
- HDIR hDir = 1;
- USHORT usSearchCount = 1; /* Read 1 entry at a time */
-
- WinSendDlgItemMsg(hwnd, IDD_FILELIST, LM_DELETEALL, NULL, NULL);
-
- DosFindFirst("*", &hDir, FILE_ALL, &findbuf, sizeof findbuf,
- &usSearchCount, 0L);
- while(usSearchCount)
- {
- WinSendDlgItemMsg(hwnd, IDD_FILELIST, LM_INSERTITEM,
- MPFROM2SHORT(LIT_SORTASCENDING, 0),
- MPFROMP(findbuf.achName));
-
- if(DosFindNext(hDir, &findbuf, sizeof findbuf, &usSearchCount))
- break;
- }
- }
-
-
- /*
- * Function name: ParseFileName()
- *
- * Parameters: pcOut points to a buffer for the return file specification.
- * pcIn points to the buffer containing the raw input spec.
- *
- * Returns: FILE_INVALID if pcIn had invalid drive or no directory
- * FILE_PATH if pcIn was empty or had just a path/no file name.
- * FILE_VALID if pcIn point to good file.
- *
- * Purpose: This routine changes drive and directory as per pcIn string.
- *
- * Usage/Warnings: Note that pcOut is only valid if FILE_VALID is returned.
- * in place of strupr(), a codepage should be fetched and
- * DosCaseMap() should be used to allow for extended chars.
- * This routine could use some cleanup work.
- *
- * Calls:
- */
-
- SHORT ParseFileName(CHAR *pcOut, CHAR *pcIn)
- {
- CHAR *pcLastSlash, *pcFileOnly ;
- ULONG ulDriveMap ;
- USHORT usDriveNum, usDirLen = CCHMAXPATH;
-
- strupr(pcIn); /* Does NOT handle extended chars, should use DosCaseMap */
-
- if(*pcIn == '\000') /* If string is empty, return FILE_PATH */
-
- return FILE_PATH;
-
- /* Get drive from input string or use current drive */
-
- if(*(pcIn+1) == ':') /* Yup, they specified a drive */
- {
- if(DosSelectDisk(*pcIn - '@')) /* Change to selected drive */
- return FILE_INVALID;
- pcIn += 2;
- }
- DosQCurDisk(&usDriveNum, &ulDriveMap); /* Get current drive */
-
- *pcOut++ = (CHAR)((CHAR) usDriveNum + '@'); /* Build drive letter */
- *pcOut++ = ':';
- *pcOut++ = '\\';
-
- if(*pcIn == '\000') /* If rest of the string is empty, return FILE_PATH */
- return FILE_PATH;
-
- /* Search for the last backslash. If none, it could be a directory. */
-
- if(!(pcLastSlash = strrchr(pcIn, '\\'))) /* No slashes? */
- {
- if(!DosChDir(pcIn, 0L))
- return FILE_PATH; /* It was a directory */
-
- DosQCurDir(0, pcOut, &usDirLen); /* Get current dir & attach input fn */
-
- if(*(pcOut+strlen(pcOut)-1) != '\\')
- strcat(pcOut++, "\\");
-
- strcat(pcOut, pcIn);
- return FILE_VALID;
- }
-
- /* If the only backslash is at the beginning, change to root */
-
- if(pcIn == pcLastSlash)
- {
- DosChDir("\\", 0L);
-
- if(*(pcIn+1) == '\000')
- return FILE_PATH;
-
- strcpy(pcOut, pcIn+1);
- return FILE_VALID;
- }
-
- /* Attempt to change directory -- Get current dir if OK */
-
- *pcLastSlash = 0;
-
- if(DosChDir(pcIn, 0L))
- return FILE_INVALID;
-
- DosQCurDir(0, pcOut, &usDirLen);
-
- /* Append input filename if any */
-
- pcFileOnly = pcLastSlash+1;
-
- if(*pcFileOnly == '\000')
- return FILE_PATH;
-
- if(*(pcOut+strlen(pcOut)-1) != '\\')
- strcat(pcOut++, "\\");
-
- strcat(pcOut, pcFileOnly);
- return FILE_VALID;
- }
-
-