You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
2.0 KiB
115 lines
2.0 KiB
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <getopt.h>
|
|
#include <string.h>
|
|
|
|
#include "array.h"
|
|
|
|
#define IODASH "-"
|
|
|
|
void usage(char* prog) {
|
|
fprintf(stderr, "Usage: %s [-f|--input-file <input-file>] [-o|--output-file <output-file>]\n", prog);
|
|
}
|
|
|
|
int main(int argc, char **argv) {
|
|
char* input_file = IODASH;
|
|
char* output_file = IODASH;
|
|
|
|
int c = 0;
|
|
|
|
while (1) {
|
|
static struct option long_options[] = {
|
|
{"input-file", required_argument, 0, 'f'},
|
|
{"output-file", required_argument, 0, 'o'},
|
|
};
|
|
|
|
int option_index = 0;
|
|
|
|
c = getopt_long(argc, argv, "f:o:", long_options, &option_index);
|
|
|
|
if (c == -1) {
|
|
break;
|
|
}
|
|
|
|
switch (c) {
|
|
case 'f':
|
|
input_file = optarg;
|
|
break;
|
|
case 'o':
|
|
output_file = optarg;
|
|
break;
|
|
default:
|
|
usage(argv[0]);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (strcmp(input_file, IODASH) == 0) {
|
|
fprintf(stderr, "(reading from stdin)\n");
|
|
}
|
|
|
|
if (strcmp(output_file, IODASH) == 0) {
|
|
fprintf(stderr, "(writing to stdout)\n");
|
|
}
|
|
|
|
printf("input_file='%s' output_file='%s'\n", input_file, output_file);
|
|
|
|
FILE* instream;
|
|
|
|
instream = stdin;
|
|
if (strcmp(input_file, IODASH) != 0) {
|
|
instream = fopen(input_file, "r");
|
|
}
|
|
|
|
if (instream == NULL) {
|
|
perror("opening input file");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
FILE* outstream;
|
|
|
|
outstream = stdout;
|
|
if (strcmp(output_file, IODASH) != 0) {
|
|
outstream = fopen(output_file, "r");
|
|
}
|
|
|
|
if (outstream == NULL) {
|
|
perror("opening output file");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
int line_int;
|
|
ssize_t nread;
|
|
|
|
char* endptr = NULL;
|
|
char* line = NULL;
|
|
size_t len = 0;
|
|
|
|
IntArray accum;
|
|
IntArray_new(&accum, 100);
|
|
|
|
while ((nread = getline(&line, &len, instream)) != -1) {
|
|
IntArray_append(&accum, atoi(line));
|
|
}
|
|
|
|
printf("Accumulated %i ints\n", IntArray_length(&accum));
|
|
|
|
IntArray_mergesort(&accum);
|
|
|
|
printf("Merge sorted:\n");
|
|
|
|
for (int i = 0; i < accum.used; ++i) {
|
|
printf("%i: %i\n", i, IntArray_get(&accum, i, 0));
|
|
}
|
|
|
|
if (strcmp(input_file, IODASH) != 0) {
|
|
fclose(instream);
|
|
}
|
|
|
|
if (strcmp(output_file, IODASH) != 0) {
|
|
fclose(outstream);
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|