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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <err.h>
#include "input.h"
size_t count_lines(FILE* file) {
size_t lineCount = 0;
char currentChar;
// on part du debut
// TODO verifier le code de retour
fseek(file, 0, SEEK_SET);
while((currentChar=fgetc(file)) != EOF) {
if(currentChar == '\n')
lineCount++;
}
return lineCount;
}
void input_int_read(struct input_int* result, char* filename) {
// open input file
FILE* file=fopen(filename, "r");
if(file == NULL)
err(1, "cannot open file %s\n", filename);
// compute line count
result->line_count = count_lines(file);
// read each line of the file
// TODO check return code
fseek(file, 0, SEEK_SET);
int current;
result->lines = malloc(result->line_count * sizeof(int));
for(size_t lineIndex = 0; lineIndex < result->line_count; lineIndex++) {
if(fscanf(file, "%d", ¤t) != 1)
err(1, "parsing error line %ld\n", lineIndex);
result->lines[lineIndex] = current;
}
// close file
fclose(file);
}
void input_str_read(struct input_str* result, char* filename) {
// open input file
FILE* file=fopen(filename, "r");
if(file == NULL)
err(1, "cannot open file %s\n", filename);
// compute line count
result->line_count = count_lines(file);
// read each line of the file
// TODO check return code
fseek(file, 0, SEEK_SET);
size_t lineSize = 0;
result->lines = malloc(result->line_count * sizeof(char*));
for(size_t lineIndex = 0; lineIndex < result->line_count; lineIndex++) {
char** dst = &(result->lines[lineIndex]);
if(getline(dst, &lineSize, file) < 0)
err(1, "read error line %ld\n", lineIndex);
}
fclose(file);
}
void input_int_free(struct input_int* input) {
free(input->lines);
}
void input_str_free(struct input_str* input) {
for(size_t i = 0; i < input->line_count; i++) {
free(input->lines[i]);
}
free(input->lines);
}
char* copy_line(char* line) {
int len = strlen(line);
char* copy = malloc(len * sizeof(char));
if(copy == NULL)
err(1, "malloc error");
memset(copy, '\0', len);
strncpy(copy, line, len);
return copy;
}
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