87 lines
1.8 KiB
C
87 lines
1.8 KiB
C
#include <limits.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <stdio.h>
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#include "puzzle_input.h"
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parse_ret_t parse_long(char * buffer, int64_t *val) {
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*val = strtol(buffer, NULL, 10);
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if (*val == LONG_MIN || *val == LONG_MAX) {
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return PARSER_INVALID;
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}
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return PARSER_OK;
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}
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parse_ret_t parse_long_from_buff(char * buffer, void * data, uint16_t index) {
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uint64_t * int_data = (uint64_t *)data;
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uint64_t val;
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int ret;
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ret = parse_long(buffer, (int64_t *)&val);
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if (ret != PARSER_OK) {
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return ret;
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}
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int_data[index] = val;
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return PARSER_OK;
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}
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parse_ret_t read_input(const char * file_path, void * data, uint16_t max_len, input_parser_t parser, uint16_t * len) {
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char buffer[64];
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int c;
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int ret = 0;
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FILE * file = fopen(file_path, "r");
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uint16_t data_ndx = 0;
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if (file != NULL) {
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int buffer_ndx = 0;
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while ((c = fgetc(file)) != EOF) {
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if (c == '\n') {
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buffer[buffer_ndx] = 0;
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ret = parser(buffer, data, data_ndx);
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if (ret != PARSER_OK) {
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break;
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}
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data_ndx++;
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if (data_ndx >= max_len) {
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ret = PARSER_RANGE_OVERFLOW;
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break;
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}
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buffer_ndx = 0;
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}
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else {
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buffer[buffer_ndx] = (char)c;
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buffer_ndx++;
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}
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}
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if (buffer_ndx > 0) {
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ret = parser(buffer, data, data_ndx);
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if (ret == PARSER_OK) {
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data_ndx++;
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}
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}
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}
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else {
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ret = PARSE_FILE_ERR;
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}
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if (file != NULL) {
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fclose(file);
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}
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*len = data_ndx;
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return ret;
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} |