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#include <assert.h>
#include <ctype.h>
#include <getopt.h>
#include <limits.h>
#include <pwd.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include "util/versie.h"
#include "util/error.h"
#include "util/debug.h"
#include "util/map.h"
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, "toilet");
exit(0);
case '?':
usage(stderr);
exit(1);
}
}
return argv + optind;
}
size_t get_count(enum MODE mode, struct map *map) {
switch (mode) {
case M_BYTES:
return map->sb.st_size;
case M_WORDS: {
size_t words = 0;
assert(map->sb.st_size >= 0);
// (c) Tom Forging
for (size_t i = 0; i < (size_t)map->sb.st_size;) {
size_t previ = i;
while (!isspace(map->addr[i])) i++;
words += i != previ;
while (isspace(map->addr[i])) i++;
}
return words;
}
case M_LINES: {
size_t lines = 0;
char *ptr = map->addr;
while (ptr != map->end) {
if (*ptr == '\n') lines++;
ptr++;
}
// handle case if file does not have trailing newline
if (*(ptr - 1) != '\n') {
lines++;
}
return lines;
}
default:
assert(false);
}
}
int entry_toilet(int argc, char **argv) {
int modeMap = 0;
char **args = parse_options(argc, argv, &modeMap);
if (modeMap == 0) {
modeMap = INT_MAX;
}
while (*args != NULL) {
struct map *map = open_map(*args);
if (map == NULL) {
fprintf(stderr, "toilet: fout bij lezen bestand");
return 1;
}
for (enum MODE mode = 1; mode <= M_BYTES; mode <<= 1) {
if (mode & modeMap) {
const size_t count = get_count(mode, map);
printf("%li ", count);
}
}
printf("%s\n", *args);
close_map(map);
args++;
}
return 0;
}
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