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#include "globals.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <curl/curl.h>
/*** utility functions ***/
void update_handler(struct player_t *player)
{
printf("Updating stock prices...\n");
for(int i = 0; i < player->portfolio_len; ++i)
{
struct stock_t *stock = player->portfolio + i;
printf("%s...\n", stock->symbol);
get_stock_info(stock->symbol, &stock->current_price, &stock->fullname);
}
}
void quit_handler(struct player_t *player)
{
exit(EXIT_SUCCESS);
}
int main(int argc, char *argv[])
{
atexit(cleanup);
curl_global_init(CURL_GLOBAL_DEFAULT);
struct player_t *player = malloc(sizeof(struct player_t));
memset(player, 0, sizeof(struct player_t));
player->cash.cents = 1000000 * 100;
update_handler(player);
while(1)
{
printf("\nYour portfolio:\n");
printf("================================================================================\n");
ullong portfolio_value = 0;
if(player->portfolio_len == 0)
{
printf(" < EMPTY >\n");
}
else
{
for(int i = 0; i < player->portfolio_len; ++i)
{
struct stock_t *stock = player->portfolio + i;
ullong total_value = stock->count * stock->current_price.cents;
printf("%6s %30s %5llu * $%5llu.%02llu = $%6llu.%02llu\n",
stock->symbol, stock->fullname, stock->count, stock->current_price.cents / 100, stock->current_price.cents % 100,
total_value / 100, total_value % 100);
portfolio_value += stock->current_price.cents * stock->count;
}
}
printf("================================================================================\n");
printf("Portfolio value: $%llu.%02llu\n", portfolio_value / 100, portfolio_value % 100);
printf("Current cash: $%llu.%02llu\n", player->cash.cents / 100, player->cash.cents % 100);
ullong total = portfolio_value + player->cash.cents;
printf("Total capital: $%llu.%02llu\n", total / 100, total % 100);
struct command_t {
const char *name;
const char *command;
void (*handler)(struct player_t*);
};
const struct command_t commands[] = {
{ "[B]uy", "buy", buy_handler },
{ "[S]ell", "sell", sell_handler },
{ "[U]pdate stock prices", "update", update_handler },
{ "[W]rite portfolio", "write", save_handler },
{ "[L]oad portfolio", "load", load_handler },
{ "[Q]uit", "quit", quit_handler },
};
for(uint i = 0; i < ARRAYLEN(commands); ++i)
{
printf("%d. %s\n", i + 1, commands[i].name);
}
printf("What would you like to do? ");
char cmdbuf[32];
scanf("%31s", cmdbuf);
all_lower(cmdbuf);
/* find the best command */
int best_command = -1;
/* first, search for an exact match */
for(int i = 0; i < ARRAYLEN(commands); ++i)
{
if(strcmp(cmdbuf, commands[i].command) == 0)
{
best_command = i;
goto exec_cmd;
}
}
/* now look for a partial match */
for(int i = 0; i < ARRAYLEN(commands); ++i)
{
int len = strlen(cmdbuf);
if(len > strlen(commands[i].command))
continue;
for(int j = 1; j <= len; ++j)
{
char *buf1 = malloc(j + 1);
memset(buf1, 0, j + 1);
memcpy(buf1, cmdbuf, j);
buf1[j] = '\0';
char *buf2 = malloc(j + 1);
memset(buf2, 0, j + 1);
memcpy(buf2, commands[i].command, j);
buf2[j] = '\0';
if(strcmp(buf1, buf2) == 0)
{
best_command = i;
free(buf1);
free(buf2);
goto exec_cmd;
}
else
{
free(buf1);
free(buf2);
}
}
}
exec_cmd:
if(best_command >= 0)
commands[best_command].handler(player);
}
}
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