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companies_map.c
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companies_map.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "companies_map.h"
#define BUFFER_SIZE_DEFAULT (1 << 20)
companies_map *companies_map_new(const char *filename)
{
companies_map *this = malloc(sizeof(companies_map));
char **reverse;
FILE *file;
file = fopen(filename, "r");
char buffer[BUFFER_SIZE_DEFAULT];
char *b = buffer;
size_t bufsize = BUFFER_SIZE_DEFAULT;
char *token;
getline(&b,&bufsize,file);
token = strtok(buffer, ":");
register unsigned int token_count = 0;
while (token != NULL)
{
token = strtok(NULL, ": ,\n");
token_count++;
}
const unsigned int companies_count = token_count - 1;
reverse = malloc(companies_count * sizeof(char*));
hashmap *forward = hashmap_new(companies_count);
this->size = companies_count;
getline(&b,&bufsize,file);
token = strtok(buffer, ":");
register unsigned int company_index = 0;
for(company_index = 0; company_index < companies_count + 1; company_index++)
{
if (company_index != 0)
{
hashmap_put(forward, token, company_index - 1);
reverse[company_index-1] = malloc(strlen(token) + 1);
strcpy(reverse[company_index-1], token);
}
token = strtok(NULL, ": ,\n");
}
hashmap_finalize(forward);
fclose(file);
this->forward = forward;
this->reverse = reverse;
return this;
}