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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdbool.h>
#include "intmath.h"
#include "formatting.h"
#include "config-parser.h"
int tests_run = 0;
int tests_failed = 0;
int main (int argc, char* argv[]) {
Result res = parse_config(argc, argv);
if (res.success == false) {
char* err_msg = (char*) res.result;
fprintf(
stderr,
"Error parsing command line: %s\n",
err_msg
);
return 1;
}
Config* conf = (Config*) res.result;
unsigned int base = 10;
if (conf->human_readable && conf->precision == 0) {
conf->precision = 1;
base = 1024;
}
int blocksize = 1;
size_t bufsize = 1;
unsigned int bytes_read = 0;
size_t new_read_bytes = 0;
if (conf->precision != 0) {
blocksize = exp_notated_to_int(int_ceiled_exponent_notation_base(
bytes_read + 1,
conf->precision,
base))
- bytes_read;
bufsize = 1024;
}
size_t max_bufsize = 1048576;
char* buf = malloc(bufsize);
char* tmpbuf;
size_t stdout_buffer_size = 16;
char* stdout_buffer = malloc(stdout_buffer_size);
int previous_line_strlen = 0;
while (1) {
/* output */
if (conf->human_readable && base == 10) {
int res = int_floored_with_prefix(
&stdout_buffer,
&stdout_buffer_size,
bytes_read,
conf->precision
);
if (res < 0) {
printf("\r%u \
(error when getting prefix)",
bytes_read);
continue;
}
printf(
"\r%*sB",
previous_line_strlen,
stdout_buffer
);
previous_line_strlen
= int_max(res, previous_line_strlen);
} else if (conf->human_readable && base == 1024) {
int success = int_floored_with_binary_prefix(
&stdout_buffer,
&stdout_buffer_size,
bytes_read
);
if (success < 0) {
printf("\r%u \
(error when getting prefix)",
bytes_read);
}
printf(
"\r%*sB",
4 + (bytes_read > 1024),
stdout_buffer
);
} else {
printf("\r%u", bytes_read);
}
if (fflush(stdout) == EOF) {
printf("\n");
perror("error during fflush");
return 1;
}
/* reading */
new_read_bytes = fread(
buf,
1,
int_min(blocksize, bufsize)/* + (blocksize == 0)*/,
stdin
);
if (new_read_bytes == 0) {
int err = ferror(stdin);
if (err != 0) {
printf("\n");
fprintf(stderr, "error reading stdin");
return err;
}
break;
}
bytes_read += new_read_bytes;
/* resizing buffer and blocksize to read as much as possible
* at once
*/
if (conf->precision == 0) continue;
blocksize = exp_notated_to_int(int_ceiled_exponent_notation_base(
bytes_read + 1,
conf->precision,
base))
- bytes_read;
if (blocksize > bufsize) {
tmpbuf = malloc(bufsize * 2);
if (tmpbuf == NULL) {
free(tmpbuf);
} else {
free(buf);
buf = tmpbuf;
bufsize *= 2;
}
}
}
printf("\n");
free(stdout_buffer);
return 0;
}
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