/**************************************************************************
*
*   Copyright (C) 2000, International Business Machines
*   Corporation and others.  All Rights Reserved.
*
***************************************************************************
*   file name:  pkgdata.c
*   encoding:   ANSI X3.4 (1968)
*   tab size:   8 (not used)
*   indentation:4
*
*   created on: 2000may16
*   created by: Steven \u24C7 Loomis
*
*  common types for pkgdata
*/

#include "unicode/utypes.h"
#include "cmemory.h"
#include "cstring.h"
#include "pkgtypes.h"

const char *pkg_writeCharListWrap(FileStream *s, CharList *l, const char *delim, const char *brk)
{
  int32_t ln = 0;
  while(l != NULL)
    {
      if(l->str)
      {
        T_FileStream_write(s, l->str, uprv_strlen(l->str));
      }

	ln  += uprv_strlen(l->str);


      if(l->next && delim)
      {
	if(ln > 60 && brk) {
		ln  = 0;
		T_FileStream_write(s, brk, uprv_strlen(brk));
	}
        T_FileStream_write(s, delim, uprv_strlen(delim));
      }
      l = l->next;
    }
  return NULL;
}

const char *pkg_writeCharList(FileStream *s, CharList *l, const char *delim)
{
  while(l != NULL)
    {
      if(l->str)
      {
        T_FileStream_write(s, l->str, uprv_strlen(l->str));
      }

      if(l->next && delim)
      {
        T_FileStream_write(s, delim, uprv_strlen(delim));
      }
      l = l->next;
    }
  return NULL;
}

/*
 * Count items . 0 if null
 */
uint32_t pkg_countCharList(CharList *l)
{
  uint32_t c = 0;
  while(l != NULL)
  {
    c++;
    l = l->next;
  }

  return c;
}

/* 
 * Prepend string to CharList
 */
CharList *pkg_prependToList(CharList *l, const char *str)
{
  CharList *newList;
  newList = uprv_malloc(sizeof(CharList));
  newList->str = str;
  newList->next = l;
  return newList;
}

/* 
 * append string to CharList. *end or even end can be null if you don't 
 * know it.[slow]
 * Str is adopted!
 */
CharList *pkg_appendToList(CharList *l, CharList** end, const char *str)
{
  CharList *endptr = NULL, *tmp;

  if(end == NULL)
  {
    end = &endptr;
  }
  
  /* FIND the end */
  if((*end == NULL) && (l != NULL))
  {
    tmp = l;
    while(tmp->next)
    {
      tmp = tmp->next;
    }

    *end = tmp;
  }

  /* Create a new empty list and append it */
  if(l == NULL)
    {
      l = pkg_prependToList(NULL, str);
    }
  else
    {
      (*end)->next = pkg_prependToList(NULL, str);
    }

  /* Move the end pointer. */
  if(*end)
    {
      (*end) = (*end)->next;
    }
  else
    {
      *end = l;
    }

  return l;
}

/*
 * Delete list 
 */
void pkg_deleteList(CharList *l)
{
  
  while(l != NULL)
  {
    uprv_free((void*)l->str);
    l = l->next;
  }
}

bool_t  pkg_listContains(CharList *l, const char *str)
{
  for(;l;l=l->next){
    if(!uprv_strcmp(l->str, str)) {
      return TRUE;
    }
  }

  return FALSE;
}