#define INCL_WIN
#define INCL_DOS
#define INCL_DOSERRORS

#include <os2.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "fm3dll.h"
#include "fm3dlg.h"
#include "fm3str.h"

#pragma alloc_text(FMINPUT,Subject)


INT Subject (HWND hwnd,CHAR *filename) {

  APIRET        rc;
  EAOP2         eaop;
  PGEA2LIST     pgealist;
  PFEA2LIST     pfealist;
  PGEA2         pgea;
  PFEA2         pfea;
  CHAR         *value,subject[42],oldsubject[42];
  STRINGINPARMS sip;
  INT           ret = 0;

  *subject = 0;
  pgealist = malloc(sizeof(GEA2LIST) + 64);
  if(pgealist) {
    memset(pgealist,0,sizeof(GEA2LIST) + 64);
    pgea = &pgealist->list[0];
    strcpy(pgea->szName,SUBJECT);
    pgea->cbName = strlen(pgea->szName);
    pgea->oNextEntryOffset = 0L;
    pgealist->cbList = (sizeof(GEA2LIST) + pgea->cbName);
    pfealist = malloc(1024);
    if(pfealist) {
      memset(pfealist,0,1024);
      pfealist->cbList = 1024;
      eaop.fpGEA2List = pgealist;
      eaop.fpFEA2List = pfealist;
      eaop.oError = 0L;
      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),39);
        subject[39] = 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;
      }
      else if(rc) {
        DosBeep(50,100);
        return 2;
      }
    }
  }
  memset(&sip,0,sizeof(sip));
  strcpy(oldsubject,subject);
  sip.help = GetPString(IDS_SUBJECTINPUTHELPTEXT);
  sip.ret = subject;
  sip.prompt = GetPString(IDS_SUBJECTINPUTPROMPTTEXT);
  sip.inputlen = 40;
  sip.title = filename;
  if(WinDlgBox(HWND_DESKTOP,hwnd,InputDlgProc,FM3ModHandle,STR_FRAME,&sip)
     && isalpha(*filename) &&
     !(driveflags[toupper(*filename) - 'A'] & DRIVE_NOTWRITEABLE)) {
    subject[39] = 0;
    lstrip(rstrip(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;
      if(!DosAllocMem((PPVOID)&pfealist,ealen + 1L,
                       OBJ_TILE | PAG_COMMIT | PAG_READ | PAG_WRITE)) {
        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 = 0L;
        rc = DosSetPathInfo(filename,FIL_QUERYEASIZE,(PVOID)&eaop,
                            (ULONG)sizeof(EAOP2),DSPI_WRTTHRU);
        DosFreeMem(pfealist);
        if(rc)
          Dos_Error(MB_ENTER,
                    rc,
                    HWND_DESKTOP,
                    __FILE__,
                    __LINE__,
                    GetPString(IDS_ERRORSETTINGSUBJECTTEXT),
                    filename);
        else
          ret = 1;
      }
      else
        DosBeep(250,100);
    }
  }
  return ret;
}