Diffstat (limited to 'noncore/todayplugins/stockticker/libstocks/history.c') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/todayplugins/stockticker/libstocks/history.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/noncore/todayplugins/stockticker/libstocks/history.c b/noncore/todayplugins/stockticker/libstocks/history.c new file mode 100644 index 0000000..61f57d1 --- a/dev/null +++ b/noncore/todayplugins/stockticker/libstocks/history.c @@ -0,0 +1,149 @@ +/* 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 __HISTORY_C__ + +#include <string.h> +#include <stdlib.h> + +#ifdef __WINDOWS__ +#include <malloc.h> +#endif + +#include "stocks.h" +#include "http.h" +#include "csv.h" + +const char history_stocks_server[]="chart.yahoo.com"; +const char url_history_beg[]="/table.csv?s="; + +/*****************************************************************************/ +/* Gets the stock history csv file and return in csv_file the result. */ +/* The stock is defined by its symbol. */ +/* The history file starts at date1 and stops at date2. */ +/*****************************************************************************/ +libstocks_return_code get_history_csv(char *symbol, + char *date1, + char *date2, + char **csv_file) +{ + char *data; + char url[80]; + + char adate[12]; + + char *y1, *y2; + char *m1, *m2; + char *d1, *d2; + + libstocks_return_code error; + + char *test; + + strcpy(url, url_history_beg); + strcat(url, symbol); + + strcpy(adate, date1); + + y1=strtok(adate, "/"); + if(!y1) return ERRDATE; + m1 = strtok(NULL, "/"); + if(!m1) return ERRDATE; + d1 = strtok(NULL, "/"); + if(!m1) return ERRDATE; + + strcat(url, "&a="); + strcat(url, m1); + strcat(url, "&b="); + strcat(url, d1); + strcat(url, "&c="); + strcat(url, y1); + + strcpy(adate, date2); + + y2=strtok(adate, "/"); + if(!y2) return ERRDATE; + m2 = strtok(NULL, "/"); + if(!m2) return ERRDATE; + d2 = strtok(NULL, "/"); + if(!d2) return ERRDATE; + + strcat(url, "&d="); + strcat(url, m2); + strcat(url, "&e="); + strcat(url, d2); + strcat(url, "&f="); + strcat(url, y2); + strcat(url, "&g=d&q=q&y=0&x=.csv"); + + error=http_get(url, (char *)history_stocks_server, &data); + if (error) return error; + + /* tests if data is valid */ + + /* The server returns "No data available for symbol" */ + /* when the stock is not available */ + test = strstr(data, "No data available"); + if (test) + { + free(data); + return ERRDATA; + } + + /* The server return "No Prices in this date range" */ + /* when dates have not the good range */ + test = strstr(data, "No Prices in this date range"); + if (test) + { + free(data); + return ERRRANG; + } + + *csv_file = data; + + return(0); +} + +/*****************************************************************************/ +/* Gets the stock history and return a stock structure list. */ +/* The stock is defined by its symbol. */ +/* The history file starts at date1 and stops at date2. */ +/*****************************************************************************/ +libstocks_return_code get_stock_history(char *symbol, + char *date1, + char *date2, + stock **stock_history) +{ + libstocks_return_code error; + char *csv_file; + stock *stock_parsed; + + error = get_history_csv(symbol, date1, date2, &csv_file); + if (error) return error; + + stock_parsed = parse_csv_history_file(csv_file); + + free(csv_file); + + if (!stock_parsed) return ERRPCSV; + *stock_history = stock_parsed; + + return(0); +} |