/***********************************************************************

  $Id$

  Edit .subject EAs

  Copyright (c) 1993-98 M. Kimes
  Copyright (c) 2004, 2006 Steven H.Levine

  01 Aug 04 SHL Rework lstrip/rstrip usage
  17 Jul 06 SHL Use Runtime_Error
  06 Aug 07 GKY Increase Subject EA to 1024
  20 Aug 07 GKY Move #pragma alloc_text to end for OpenWatcom compat
  01 Sep 07 GKY Use xDosSetPathInfo to fix case where FS3 buffer crosses 64k boundry

***********************************************************************/

#define INCL_WIN
#define INCL_DOS
#define INCL_DOSERRORS
#define INCL_LONGLONG
#include <os2.h>

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>

#include "fm3dll.h"
#include "fm3dlg.h"
#include "fm3str.h"

static PSZ pszSrcFile = __FILE__;

INT Subject(HWND hwnd, CHAR * filename)
{
  APIRET rc;
  EAOP2 eaop;
  PGEA2LIST pgealist;
  PFEA2LIST pfealist;
  PGEA2 pgea;
  PFEA2 pfea;
  CHAR *value, subject[1024], oldsubject[1024];
  STRINGINPARMS sip;
  INT ret = 0;

  *subject = 0;
  pgealist = xmallocz(sizeof(GEA2LIST) + 64, pszSrcFile, __LINE__);
  if (pgealist) {
    pgea = &pgealist->list[0];
    strcpy(pgea->szName, SUBJECT);
    pgea->cbName = strlen(pgea->szName);
    pgea->oNextEntryOffset = 0;
    pgealist->cbList = (sizeof(GEA2LIST) + pgea->cbName);
    pfealist = xmallocz(1024, pszSrcFile, __LINE__);
    if (pfealist)
      free(pgealist);
    else {
      pfealist->cbList = 1024;
      eaop.fpGEA2List = pgealist;
      eaop.fpFEA2List = pfealist;
      eaop.oError = 0;
      rc = DosQueryPathInfo(filename, FIL_QUERYEASFROMLIST,
			    (PVOID) & eaop, (ULONG) sizeof(EAOP2));
      free(pgealist);
      if (!rc) {
	pfea = &eaop.fpFEA2List->list[0];
	value = pfea->szName + pfea->cbName + 1;
	value[pfea->cbValue] = 0;
	if (*(USHORT *) value == EAT_ASCII)
	  strncpy(subject, value + (sizeof(USHORT) * 2), 1023);
	subject[1023] = 0;
      }
      free(pfealist);
      if (rc == ERROR_SHARING_VIOLATION || rc == ERROR_ACCESS_DENIED) {
	saymsg(MB_CANCEL,
	       hwnd,
	       GetPString(IDS_OOPSTEXT),
	       GetPString(IDS_EASBUSYTEXT), filename);
	return 2;			// Error
      }
      else if (rc) {
	Dos_Error(MB_CANCEL, rc, hwnd, pszSrcFile, __LINE__,
		  "DosQueryPathInfo");
	return 2;			// Error
      }
    }
  }
  memset(&sip, 0, sizeof(sip));
  strcpy(oldsubject, subject);
  sip.help = GetPString(IDS_SUBJECTINPUTHELPTEXT);
  sip.ret = subject;
  sip.prompt = GetPString(IDS_SUBJECTINPUTPROMPTTEXT);
  sip.inputlen = 1024;
  sip.title = filename;
  if (WinDlgBox
      (HWND_DESKTOP, hwnd, InputDlgProc, FM3ModHandle, STR_FRAME, &sip)
      && isalpha(*filename)
      && !(driveflags[toupper(*filename) - 'A'] & DRIVE_NOTWRITEABLE)) {
    subject[1023] = 0;
    bstrip(subject);
    if (strcmp(oldsubject, subject)) {

      ULONG ealen;
      USHORT len;
      CHAR *eaval;

      len = strlen(subject);
      if (len)
	ealen = sizeof(FEA2LIST) + 9 + len + 4;
      else
	ealen = sizeof(FEALIST) + 9;
      rc = DosAllocMem((PPVOID) & pfealist, ealen + 1L,
		       OBJ_TILE | PAG_COMMIT | PAG_READ | PAG_WRITE);
      if (rc)
	Dos_Error(MB_CANCEL, rc, hwnd, pszSrcFile, __LINE__,
		  GetPString(IDS_OUTOFMEMORY));
      else {
	memset(pfealist, 0, ealen + 1);
	pfealist->cbList = ealen;
	pfealist->list[0].oNextEntryOffset = 0L;
	pfealist->list[0].fEA = 0;
	pfealist->list[0].cbName = 8;
	strcpy(pfealist->list[0].szName, SUBJECT);
	if (len) {
	  eaval = pfealist->list[0].szName + 9;
	  *(USHORT *) eaval = (USHORT) EAT_ASCII;
	  eaval += sizeof(USHORT);
	  *(USHORT *) eaval = (USHORT) len;
	  eaval += sizeof(USHORT);
	  memcpy(eaval, subject, len);
	  pfealist->list[0].cbValue = len + (sizeof(USHORT) * 2);
	}
	else
	  pfealist->list[0].cbValue = 0;
	eaop.fpGEA2List = (PGEA2LIST) 0;
	eaop.fpFEA2List = pfealist;
	eaop.oError = 0;
	rc = xDosSetPathInfo(filename, FIL_QUERYEASIZE,
			     &eaop, sizeof(eaop), DSPI_WRTTHRU);
	DosFreeMem(pfealist);
	if (rc) {
	  Dos_Error(MB_ENTER, rc, HWND_DESKTOP, pszSrcFile, __LINE__,
		    GetPString(IDS_ERRORSETTINGSUBJECTTEXT), filename);
	}
	else
	  ret = 1;			// OK
      }
    }
  }
  return ret;				// No change?
}

#pragma alloc_text(FMINPUT,Subject)