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#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <pwd.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "util/debug.h"
#include "util/error.h"
#include "util/loop_args.h"
#include "util/map.h"
#include "util/versie.h"
#include "io/read_file.h"
static int modeMap;
#define BUF_SIZE 4096
static void usage(FILE *f) {
fprintf(f,
"Gebruik: toilet [-nchV] [BESTAND]...\n"
"\n"
"Toon de hoeveelheid regels, woorden en beten for elk BESTAND\n"
"\n"
" -c Geef het aantal beten weer\n"
" -w Geef het aantal woorden weer\n"
" -l Geef het aantal regels weer\n"
" -h Toon deze hulptekst\n"
" -V Toon versienummer\n");
}
enum MODE {
M_LINES = 1 << 0,
M_WORDS = 1 << 1,
M_BYTES = 1 << 2,
};
// Returns pointer to argument array containing the file names
static char** parse_options(int argc, char **argv, int *modeMap) {
int opt;
while ((opt = getopt(argc, argv, "cwlhV")) != -1) {
switch (opt) {
case 'c':
*modeMap |= M_BYTES;
break;
case 'w':
*modeMap |= M_WORDS;
break;
case 'l':
*modeMap |= M_LINES;
break;
case 'h':
usage(stdout);
exit(0);
case 'V':
drukkedoos_print_versie(stdout);
exit(0);
case '?':
fprintf(stderr, "toilet: Ongeldige optie: -%c\n", optopt);
usage(stderr);
exit(1);
}
}
return argv + optind;
}
static size_t count_lines(char *fname, FILE *f) {
size_t nlines = 0;
bool last_was_nl = false;
while (!feof(f)) {
static char buf[BUF_SIZE];
const size_t n = fread(buf, 1, BUF_SIZE, f);
for (size_t i = 0; i < n; i++) {
last_was_nl = false;
if (buf[i] == '\n') {
nlines++;
last_was_nl = true;
}
}
}
if (!last_was_nl) nlines++;
if (errno != 0) {
printf("toilet: fout bij lezen uit bestand '%s'\n", fname);
exit(1);
}
rewind(f);
return nlines;
}
static size_t count_words(FILE *f) {
size_t nwords = 0;
while (!feof(f)) {
static char buf[BUF_SIZE];
const size_t n = fread(buf, 1, BUF_SIZE, f);
// (c) Tom Forging
for (size_t i = 0; i<n;) {
size_t previ = i;
while (i<n && !isspace(buf[i])) i++;
nwords += i != previ;
while (i<n && isspace(buf[i])) i++;
}
}
rewind(f);
return nwords;
}
static size_t get_count(enum MODE mode, char *fname, FILE *f) {
switch (mode) {
case M_BYTES: {
fseek(f, 0, SEEK_END);
long offset = ftell(f);
rewind(f);
return offset;
}
case M_WORDS:
return count_words(f);
case M_LINES:
return count_lines(fname, f);
default:
assert(false);
}
}
static int process(char *fname, bool isstdin) {
FILE *f = isstdin ? stdin : fopen(fname, "rb");
for (enum MODE mode = 1; mode <= M_BYTES; mode <<= 1) {
if (mode & modeMap) {
const size_t count = get_count(mode, fname, f);
printf("%li ", count);
}
}
if (fname != NULL) printf("%s", fname);
putchar('\n');
if (!isstdin) fclose(f);
return 0;
}
int entry_toilet(int argc, char **argv) {
modeMap = 0;
char **args = parse_options(argc, argv, &modeMap);
if (modeMap == 0) {
modeMap = INT_MAX;
}
return loop_args(args, process);
}
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