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path: root/noncore/todayplugins/stockticker/libstocks/lists.c
authorllornkcor <llornkcor>2002-10-31 00:09:31 (UTC)
committer llornkcor <llornkcor>2002-10-31 00:09:31 (UTC)
commit5a08fd92ac139820e1a1202d0b4b67190f24ccdb (patch) (side-by-side diff)
treee9c0692cf445a886cd529b60f8e535922a7f5d4d /noncore/todayplugins/stockticker/libstocks/lists.c
parentad396dd7b58fc772423f95be050f645fc7a6d9b9 (diff)
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diff --git a/noncore/todayplugins/stockticker/libstocks/lists.c b/noncore/todayplugins/stockticker/libstocks/lists.c
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+/* libstocks - Library to get current stock quotes from Yahoo Finance
+ *
+ * Copyright (C) 2000 Eric Laeuffer
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#define __LISTS_C__
+
+#include <malloc.h>
+#include <stdio.h>
+#include <string.h>
+
+#ifdef __WINDOWS__
+#include <stdlib.h>
+#endif
+
+#include "stocks.h"
+#include "lists.h"
+
+/******************************************************************************/
+/* Finds a stock in the stocks list and return the stock pointer. */
+/* *stocks points to the stocks list */
+/* *stock_to_find is the stock to find :)) */
+/******************************************************************************/
+stock *find_stock(stock *stocks, char *stock_to_find)
+{
+ char *test=NULL;
+
+ while(stocks != NULL)
+ {
+ test = strstr(stocks->Symbol, stock_to_find);
+ if(test) return(stocks);
+ stocks = stocks->NextStock;
+ }
+
+ return(0);
+}
+
+/******************************************************************************/
+/* Allocate memory for a stock structure and return the pointer of this */
+/* structure. */
+/******************************************************************************/
+stock *malloc_stock(void)
+{
+ stock *stockptr;
+
+ if((stockptr = (stock *)malloc(sizeof(stock)))==NULL)
+ {
+ fprintf(stderr,"Memory allocating error (%s line %d)\n"
+ ,__FILE__, __LINE__);
+ exit(1);
+ }
+
+ stockptr->Symbol=NULL;
+ stockptr->Name=NULL;
+ stockptr->Time=NULL;
+ stockptr->Date=NULL;
+ stockptr->CurrentPrice=0;
+ stockptr->LastPrice=0;
+ stockptr->OpenPrice=0;
+ stockptr->MinPrice=0;
+ stockptr->MaxPrice=0;
+ stockptr->Variation=0;
+ stockptr->Pourcentage=0;
+ stockptr->Volume=0;
+ stockptr->PreviousStock=0;
+ stockptr->NextStock=0;
+
+ return(stockptr);
+}
+
+/******************************************************************************/
+/* Deallocates a stock structure. */
+/* *stocks_to_free is the pointer of the structure to free */
+/******************************************************************************/
+void free_stocks(stock *stock_to_free)
+{
+ stock *next_stock;
+
+ while(stock_to_free)
+ {
+ next_stock = stock_to_free->NextStock;
+ free(stock_to_free->Symbol);
+ free(stock_to_free->Name);
+ free(stock_to_free->Time);
+ free(stock_to_free->Date);
+ free(stock_to_free);
+ stock_to_free = next_stock;
+ }
+}
+
+/******************************************************************************/
+/* Returns the next stock structure from the list. */
+/* *the_stocks points to the list. */
+/******************************************************************************/
+stock *next_stock(stock *the_stock)
+{
+ return((stock *)(the_stock->NextStock));
+}
+
+/******************************************************************************/
+/* Returns the previous stock structure from the list. */
+/* *the_stocks points to the list. */
+/******************************************************************************/
+stock *previous_stock(stock *the_stock)
+{
+ return((stock *)(the_stock->PreviousStock));
+}
+