/*--------------------------------------------------------------------------
 		   L N S   R \"U N B U F F E R
 		   

	Mark Koennecke,    January 1997

	Copyright:

	Labor fuer Neutronenstreuung
	Paul Scherrer Institut
	CH-5423 Villigen-PSI


        The authors hereby grant permission to use, copy, modify, distribute,
        and license this software and its documentation for any purpose, provided
        that existing copyright notices are retained in all copies and that this
        notice is included verbatim in any distributions. No written agreement,
        license, or royalty fee is required for any of the authorized uses.
        Modifications to this software may be copyrighted by their authors
        and need not follow the licensing terms described here, provided that
        the new terms are clearly indicated on the first page of each file where
        they apply.

        IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY PARTY
        FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
        ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
        DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
        POSSIBILITY OF SUCH DAMAGE.

        THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
        INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
        FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.  THIS SOFTWARE
        IS PROVIDED ON AN "AS IS" BASIS, AND THE AUTHORS AND DISTRIBUTORS HAVE
        NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR
        MODIFICATIONS.
----------------------------------------------------------------------------*/
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <tcl.h>
#include <fortify.h>
#include <lld.h>
#include <lld_blob.h>
#include <lld_str.h>
#include <conman.h>
#include <obdes.h>
#include "buffer.h"
#include <fupa.h>
#include <splitter.h>
#include "ruli.h"
/*-------------------------------------------------------------------------*/
static int SaveBuffer(void *pData, char *name, FILE * fd)
{
  pRuenBuffer self = NULL;
  int iRet;
  char *pPtr = NULL;

  assert(fd);
  assert(pData);

  self = (pRuenBuffer) pData;
  fprintf(fd, "#  RuenBuffer %s\n", name);
  fprintf(fd, "Buf new %s\n", name);
  iRet = LLDnodePtr2First(self->iLineList);
  while (iRet != 0) {
    pPtr = (char *) LLDnodePtr(self->iLineList);
    fprintf(fd, "%s append %s\n", name, pPtr);
    iRet = LLDnodePtr2Next(self->iLineList);
  }
  return 1;
}

/*--------------------------------------------------------------------------*/
pRuenBuffer CreateRuenBuffer(char *name)
{
  pRuenBuffer pNew = NULL;

  pNew = (pRuenBuffer) malloc(sizeof(RuenBuffer));
  if (!pNew) {
    return NULL;
  }
  pNew->pDes = CreateDescriptor("SicsRuenBuffer");
  if (!pNew->pDes) {
    free(pNew);
    return NULL;
  }

  pNew->name = strdup(name);
  (void)Fortify_CheckAllMemory();
  pNew->iLineList = LLDblobCreate();
  if (pNew->iLineList == -1) {
    DeleteDescriptor(pNew->pDes);
    free(pNew->name);
    free(pNew);
    return NULL;
  }
  pNew->pDes->SaveStatus = SaveBuffer;
  return pNew;
}

/*--------------------------------------------------------------------------*/
static void DeleteLineBuffer(int iList)
{
  int iRet;
  char *pPtr;

  iRet = LLDnodePtr2First(iList);
  while (iRet != 0) {
    pPtr = (char *) LLDnodePtr(iList);
    free(pPtr);
    iRet = LLDnodePtr2Next(iList);
  }
  LLDdelete(iList);
}

/*-------------------------------------------------------------------------*/
void DeleteRuenBuffer(void *self)
{
  int iRet;
  pRuenBuffer pOld = (pRuenBuffer) self;

  assert(pOld);
  /* delete line buffer */
  DeleteLineBuffer(pOld->iLineList);
  if (pOld->name) {
    free(pOld->name);
  }
  if (pOld->pDes) {
    DeleteDescriptor(pOld->pDes);
  }
  free(pOld);
}

/*--------------------------------------------------------------------------*/
pRuenBuffer CopyRuenBuffer(pRuenBuffer pOld, char *name)
{
  pRuenBuffer pNew = NULL;
  int iRet;
  char *pPtr;

  pNew = CreateRuenBuffer(name);
  if (!pNew) {
    return NULL;
  }

  /* copy list */
  iRet = LLDnodePtr2First(pOld->iLineList);
  while (iRet != 0) {
    pPtr = (char *) LLDnodePtr(pOld->iLineList);
    LLDstringAdd(pNew->iLineList, pPtr);
    iRet = LLDnodePtr2Next(pOld->iLineList);
  }
  return pNew;
}

/*-------------------------------------------------------------------------*/
int BufferAppendLine(pRuenBuffer self, char *line)
{
  assert(self);

  return LLDstringAppend(self->iLineList, line);
}

/*------------------------------------------------------------------------*/
int BufferDel(pRuenBuffer self, int i)
{
  int iNum;
  int iRet;

  assert(self);

  iRet = LLDnodePtr2First(self->iLineList);
  iNum = 0;
  while (iRet != 0) {
    if (iNum == i) {
      LLDstringDelete(self->iLineList);
      return 1;
    }
    iNum++;
    iRet = LLDnodePtr2Next(self->iLineList);
  }
  return 0;
}

/*------------------------------------------------------------------------*/
int BufferInsertAfter(pRuenBuffer self, int i, char *line)
{
  int iNum;
  int iRet;

  assert(self);

  iRet = LLDnodePtr2First(self->iLineList);
  iNum = 0;
  while (iRet != 0) {
    if (iNum == i) {
      LLDstringInsert(self->iLineList, line);
      return 1;
    }
    iNum++;
    iRet = LLDnodePtr2Next(self->iLineList);
  }
  return 0;
}

/*------------------------------------------------------------------------*/
int BufferPrint(pRuenBuffer self, SConnection * pCon)
{
  int iRet;
  char *pPtr = NULL;
  char pBueffel[512];
  int iCount = 1;

  iRet = LLDnodePtr2First(self->iLineList);
  sprintf(pBueffel, "Listing for Bueffer %s", self->name);
  SCWrite(pCon, pBueffel, eValue);
  while (iRet != 0) {
    pPtr = (char *) LLDnodePtr(self->iLineList);
    sprintf(pBueffel, "[%d] %s", iCount, pPtr);
    SCWrite(pCon, pBueffel, eValue);
    iRet = LLDnodePtr2Next(self->iLineList);
    iCount++;
  }
  return 1;
}

/*------------------------------------------------------------------------*/
extern char *StrReplace(char *str, char *old, char *pNew);
  /* realised in Strrepl.c
   */

int BufferReplace(pRuenBuffer self, char *pattern, char *pReplace)
{
  int iRet;
  char *pPtr = NULL;
  char pBueffel[1024];
  char *pRet;

  iRet = LLDnodePtr2First(self->iLineList);
  while (iRet != 0) {
    pPtr = (char *) LLDnodePtr(self->iLineList);
    strcpy(pBueffel, pPtr);
    pRet = NULL;
    pRet = StrReplace(pBueffel, pattern, pReplace);
    if (pRet) {
      LLDstringDelete(self->iLineList);
      iRet = LLDnodePtr2Next(self->iLineList);
      LLDnodePtr2Prev(self->iLineList);
      if (iRet) {
        LLDstringInsert(self->iLineList, pBueffel);
      } else {
        LLDstringAppend(self->iLineList, pBueffel);
      }
    }
    iRet = LLDnodePtr2Next(self->iLineList);
  }
  return 1;
}

/*-----------------------------------------------------------------------*/
int BufferRun(pRuenBuffer self, SConnection * pCon, SicsInterp * pSics)
{
  int iRet;
  char *pPtr = NULL;
  int iInt, iRes;

  iRes = 1;
  iRet = LLDnodePtr2First(self->iLineList);
  while (iRet != 0) {
    pPtr = (char *) LLDnodePtr(self->iLineList);
    iInt = InterpExecute(pSics, pCon, pPtr);
    if (!iInt) {
      if (SCGetInterrupt(pCon) > eAbortBatch) {
        iRes = 0;
        break;
      }
    }
    iRet = LLDnodePtr2Next(self->iLineList);
  }
  return iRes;
}

/*------------------------------------------------------------------------*/
int BufferSave(pRuenBuffer self, char *file)
{
  int iRet;
  char *pPtr = NULL;
  FILE *fd = NULL;

  fd = fopen(file, "w");
  if (fd == NULL) {
    return 0;
  }
  iRet = LLDnodePtr2First(self->iLineList);
  while (iRet != 0) {
    pPtr = (char *) LLDnodePtr(self->iLineList);
    fprintf(fd, "%s\n", pPtr);
    iRet = LLDnodePtr2Next(self->iLineList);
  }
  fclose(fd);
  return 1;
}

/*------------------------------------------------------------------------*/
int BufferLoad(pRuenBuffer self, char *file)
{
  int iRet;
  char *pPtr = NULL;
  FILE *fd = NULL;
  char pBueffel[256];

  fd = fopen(file, "r");
  if (fd == NULL) {
    return 0;
  }

  pPtr = fgets(pBueffel, 255, fd);
  while (pPtr != NULL) {
    LLDstringAppend(self->iLineList, pBueffel);
    pPtr = fgets(pBueffel, 255, fd);
  }

  fclose(fd);
  return 1;
}

/*------------------------------------------------------------------------*/
pRuenBuffer FindRuenBuffer(SicsInterp * pSics, char *name)
{
  pRuenBuffer pBuf = NULL;
  CommandList *pCom = NULL;

  pCom = FindCommand(pSics, name);
  if (!pCom) {
    return NULL;
  }
  pBuf = (pRuenBuffer) pCom->pData;
  if (!pBuf) {
    return NULL;
  }
  if (!pBuf->pDes) {
    return NULL;
  }
  if (strcmp(pBuf->pDes->name, "SicsRuenBuffer") != 0) {
    return NULL;
  }
  return pBuf;
}

/*-------------------------------------------------------------------------*/
int InitBufferSys(SConnection * pCon, SicsInterp * pSics, void *pData,
                  int argc, char *argv[])
{
  pRuenStack pStack = NULL;

  pStack = CreateRuenStack();
  if (!pStack) {
    SCWrite(pCon, "ERROR: No memory to create Ruen-Stack", eError);
    return 0;
  }
  AddCommand(pSics, "Buf", BufferCommand, NULL, NULL);
  AddCommand(pSics, "Stack", RuenStackAction, DeleteRuenStack, pStack);
  return 1;
}

/*------------------------------------------------------------------------*/
int BufferCommand(SConnection * pCon, SicsInterp * pSics, void *pData,
                  int argc, char *argv[])
{
  int iRet, iRet2;
  char pBueffel[512];
  char **argx;
  FuPaResult PaRes;
  pRuenBuffer pBuf = NULL;
  FuncTemplate BufferTemplate[] = {
    {"new", 1, {FUPATEXT}},
    {"del", 1, {FUPATEXT}},
    {"copy", 2, {FUPATEXT, FUPATEXT}},
  };

  assert(pCon);
  assert(pSics);

  /* minimum user to use this */
  if (!SCMatchRights(pCon, usUser)) {
    return 0;
  }
  /* parse function args */
  argtolower(argc, argv);
  argx = &argv[1];
  iRet =
      EvaluateFuPa((pFuncTemplate) & BufferTemplate, 3, argc - 1, argx,
                   &PaRes);
  if (iRet < 0) {
    sprintf(pBueffel, "%s", PaRes.pError);
    SCWrite(pCon, pBueffel, eError);
    return 0;
  }

  switch (iRet) {
  case 0:                      /* new */
    pBuf = CreateRuenBuffer(PaRes.Arg[0].text);
    if (!pBuf) {
      SCWrite(pCon, "ERROR: Out of memory allocating buffer", eError);
      return 0;
    }
    iRet2 = AddCommand(pSics, pBuf->name, BufferAction, DeleteRuenBuffer,
                       (void *) pBuf);
    if (!iRet2) {
      sprintf(pBueffel, "ERROR: duplicate command %s not created",
              pBuf->name);
      SCWrite(pCon, pBueffel, eError);
      DeleteRuenBuffer((void *) pBuf);
      return 0;
    }
    return 1;
    break;
  case 1:                      /* del */
    return RemoveCommand(pSics, PaRes.Arg[0].text);
    break;
  case 2:                      /* copy */
    pBuf = FindRuenBuffer(pSics, PaRes.Arg[0].text);
    if (!pBuf) {
      sprintf(pBueffel, "ERROR: Buffer %s not found", PaRes.Arg[0].text);
      SCWrite(pCon, pBueffel, eError);
      return 0;
    }
    pBuf = CopyRuenBuffer(pBuf, PaRes.Arg[1].text);
    if (!pBuf) {
      sprintf(pBueffel, "ERROR: creating buffer %s ", PaRes.Arg[1].text);
      SCWrite(pCon, pBueffel, eError);
      return 0;
    }
    iRet2 = AddCommand(pSics, pBuf->name, BufferAction, DeleteRuenBuffer,
                       (void *) pBuf);
    if (!iRet2) {
      sprintf(pBueffel, "ERROR: duplicate command %s not created",
              pBuf->name);
      SCWrite(pCon, pBueffel, eError);
      DeleteRuenBuffer((void *) pBuf);
      return 0;
    }

    return 1;
    break;
  default:
    assert(0);
    break;

  }
  assert(0);
}

/*-------------------------------------------------------------------------*/
int BufferAction(SConnection * pCon, SicsInterp * pSics, void *pData,
                 int argc, char *argv[])
{
  int iRet, iRet2;
  char pBueffel[512];
  char **argx;
  FuPaResult PaRes;
  pRuenBuffer pBuf = NULL;
  FuncTemplate BufferTemplate[] = {
    {"append", 0, {FUPATEXT}},
    {"del", 1, {FUPAINT}},
    {"ins", 1, {FUPAINT}},
    {"save", 1, {FUPATEXT}},
    {"load", 1, {FUPATEXT}},
    {"subst", 2, {FUPATEXT, FUPATEXT}},
    {"print", 0, {0, 0}},
    {"run", 0, {0, 0}}
  };

  assert(pCon);
  assert(pSics);
  pBuf = (pRuenBuffer) pData;
  assert(pBuf);


  /* You need to be user in order to do this */
  if (!SCMatchRights(pCon, usUser)) {
    return 0;
  }
  /* parse function args */
  argx = &argv[1];
  strtolower(argx[0]);
  iRet =
      EvaluateFuPa((pFuncTemplate) & BufferTemplate, 8, argc - 1, argx,
                   &PaRes);
  if (iRet < 0) {
    sprintf(pBueffel, "%s", PaRes.pError);
    SCWrite(pCon, pBueffel, eError);
    return 0;
  }

  switch (iRet) {
  case 0:                      /* append */
    argx = &argv[2];
    Arg2Text(argc - 2, argx, pBueffel, 511);
    BufferAppendLine(pBuf, pBueffel);
    SCSendOK(pCon);
    return 1;
    break;
  case 1:                      /* del */
    iRet2 = BufferDel(pBuf, PaRes.Arg[0].iVal);
    if (iRet2)
      SCSendOK(pCon);
    break;
  case 2:                      /* ins */
    argx = &argv[3];
    Arg2Text(argc - 3, argx, pBueffel, 511);
    iRet2 = BufferInsertAfter(pBuf, PaRes.Arg[0].iVal, pBueffel);
    if (iRet2)
      SCSendOK(pCon);
    return iRet2;
    break;
  case 3:                      /* save */
    iRet2 = BufferSave(pBuf, PaRes.Arg[0].text);
    if (!iRet2) {
      sprintf(pBueffel, "ERROR: cannot open %s for writing",
              PaRes.Arg[0].text);
      SCWrite(pCon, pBueffel, eError);
      return 0;
    } else {
      SCSendOK(pCon);
      return 1;
    }
    break;
  case 4:                      /* load */
    iRet2 = BufferLoad(pBuf, PaRes.Arg[0].text);
    if (!iRet2) {
      sprintf(pBueffel, "ERROR: cannot open %s for reading ",
              PaRes.Arg[0].text);
      SCWrite(pCon, pBueffel, eError);
      return 0;
    } else {
      SCSendOK(pCon);
      return 1;
    }
    break;
  case 5:                      /* subst */
    iRet2 = BufferReplace(pBuf, PaRes.Arg[0].text, PaRes.Arg[1].text);
    if (iRet2)
      SCSendOK(pCon);
    break;
  case 6:                      /* print */
    return BufferPrint(pBuf, pCon);
    break;
  case 7:                      /* run */
    return BufferRun(pBuf, pCon, pSics);
  default:
    assert(0);
  }
  return 1;
}