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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/debug.h"
#include "util/error.h"
#include "util/loop_args.h"
#include "util/map.h"
#include "util/versie.h"
#include "io/read_file.h"
int modeMap;
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;
}
size_t get_count(enum MODE mode, struct filebuf *fb) {
switch (mode) {
case M_BYTES:
return fb->sz;
case M_WORDS: {
size_t words = 0;
assert(fb->sz >= 0);
// (c) Tom Forging
for (size_t i = 0; i < (size_t)fb->sz;) {
size_t previ = i;
while (!isspace(fb->buf[i])) i++;
words += i != previ;
while (isspace(fb->buf[i])) i++;
}
return words;
}
case M_LINES: {
size_t lines = 0;
size_t i = 0;
while (i != fb->sz) {
if (fb->buf[i] == '\n') lines++;
i++;
}
// handle case if file does not have trailing newline
if (fb->buf[i - 1] != '\n') {
lines++;
}
return lines;
}
default:
assert(false);
}
}
static void process(char *fname, struct filebuf *fb) {
for (enum MODE mode = 1; mode <= M_BYTES; mode <<= 1) {
if (mode & modeMap) {
const size_t count = get_count(mode, fb);
printf("%li ", count);
}
}
printf("%s\n", fname);
free_filebuf(fb);
}
// TODO: be smarter, toilet doesn't have to read the whole file in memory (for
// unmappable files)
static int handle(char *arg, bool isstdin) {
if (isstdin) {
struct filebuf *fb = stream_to_filebuf(stdin, 0);
if (fb == NULL) goto err_stdin;
process("", fb);
} else {
bool isdir = false;
struct filebuf *fb = file_to_filebuf(arg, 0, &isdir);
if (isdir) goto err_isdir;
else if (fb == NULL) goto err_file;
process(arg, fb);
}
return 0;
err_stdin:
fprintf(stderr, "toilet: fout bij lezen van standaard invoer\n");
return 1;
err_file:
fprintf(stderr, "toilet: fout bij lezen van bestand\n");
return 1;
err_isdir:
fprintf(stderr, "toilet: bestand '%s' is een mapje\n", arg);
return -1;
}
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, handle);
}
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