Modularizando em funções para cada processamento

This commit is contained in:
NRZ Code 2025-05-04 19:28:26 -03:00
parent 0c146af6c6
commit 3b90bebe6c

197
wc.c
View file

@ -6,13 +6,15 @@
#include <stdlib.h>
#include <string.h>
#define FIELDS 5
#define VERSION "0.0.1"
#define FIELDS 5
bool mode_bytes = false;
bool mode_chars = false;
bool mode_lines = false;
bool mode_mllen = false;
bool mode_words = false;
bool mode_total = false;
static struct option long_options[] = {
{"bytes", no_argument, NULL, 'c'},
@ -36,10 +38,87 @@ int intlen(int number) {
return strlen(buffer);
}
void count_lines(int *counter) {
/* lines */
(*counter)++;
}
void count_bytes(char *line, int *counter) {
/* bytes */
*counter += strlen(line);
}
void count_words(char *line, int *counter) {
/* words */
char *str = strdup(line);
if (!str)
return;
while (strtok_r(str, " \t\n", &str) != NULL)
(*counter)++;
}
void count_chars(char *line, int *counter) {
/* chars */
char *str = strdup(line);
if (!str)
return;
size_t mblen = mbstowcs(NULL, str, 0);
if (mblen == (size_t)-1 || mblen > INT_MAX) {
perror("Erro ao converter multibyte");
exit(EXIT_FAILURE);
}
(*counter) += (int)mblen;
}
void count_max_line(char *line, int *max_counter) {
/* max-line-lenght */
char *str = strdup(line);
if (!str)
return;
int len = strlen(str);
if (len > 0 && str[len-1] == '\n')
str[len-1] = '\0';
size_t mblen = mbstowcs(NULL, str, 0);
if (mblen == (size_t)-1 || mblen > INT_MAX) {
perror("Erro ao converter multibyte");
exit(EXIT_FAILURE);
}
*max_counter = *max_counter > (int)mblen ? *max_counter : (int)mblen;
}
void print_results(char **list, int **items, int count) {
/* Ordem das colunas */
for (int i = 1; i < count; i++) { /* -l lines -w words -m chars -c bytes -L max-line-length */
if (mode_lines)
printf("%*d ", intlen(items[TOTAL][LINES]), items[i][LINES]);
if (mode_words)
printf("%*d ", intlen(items[TOTAL][WORDS]), items[i][WORDS]);
if (mode_chars)
printf("%*d ", intlen(items[TOTAL][CHARS]), items[i][CHARS]);
if (mode_bytes)
printf("%*d ", intlen(items[TOTAL][BYTES]), items[i][BYTES]);
if (mode_mllen)
printf("%*d ", intlen(items[TOTAL][MLLEN]), items[i][MLLEN]);
printf("%s\n", list[i]);
}
if (mode_total) { /* Print total */
if (mode_lines)
printf("%*d ", intlen(items[TOTAL][LINES]), items[TOTAL][LINES]);
if (mode_words)
printf("%*d ", intlen(items[TOTAL][WORDS]), items[TOTAL][WORDS]);
if (mode_chars)
printf("%*d ", intlen(items[TOTAL][CHARS]), items[TOTAL][CHARS]);
if (mode_bytes)
printf("%*d ", intlen(items[TOTAL][BYTES]), items[TOTAL][BYTES]);
if (mode_mllen)
printf("%*d ", intlen(items[TOTAL][MLLEN]), items[TOTAL][MLLEN]);
printf("total\n");
}
}
void wc(char **list, int count) {
setlocale(LC_ALL, "pt_BR.UTF-8");
char buffer[BUFSIZ];
size_t mblen;
/**
* Items = [
* [0] => lines,
@ -68,50 +147,16 @@ void wc(char **list, int count) {
exit(EXIT_FAILURE);
}
while (fgets(buffer, BUFSIZ, stream) != NULL) {
/* bytes */
if (mode_bytes)
items[i][BYTES] += strlen(buffer);
char *str;
/* words */
if (mode_words) {
str = strdup(buffer);
while (strtok_r(str, " \t\n", &str) != NULL)
items[i][WORDS]++;
}
/* chars */
if (mode_chars) {
str = strdup(buffer);
mblen = mbstowcs(NULL, str, 0);
if (mblen == (size_t)-1) {
perror("Erro ao converter multibyte");
exit(EXIT_FAILURE);
}
if (mblen > INT_MAX) {
fprintf(stderr, "Erro valor maior que INT_MAX!\n");
exit(EXIT_FAILURE);
}
items[i][CHARS] += (int)mblen;
}
/* max-line-lenght */
if (mode_mllen) {
str = strdup(buffer);
int len = strlen(str);
if (len > 0 && str[len-1] == '\n')
str[len-1] = '\0';
mblen = mbstowcs(NULL, str, 0);
if (mblen == (size_t)-1) {
perror("Erro ao converter multibyte");
exit(EXIT_FAILURE);
}
if (mblen > INT_MAX) {
fprintf(stderr, "Erro valor maior que INT_MAX!\n");
exit(EXIT_FAILURE);
}
items[i][MLLEN] = items[i][MLLEN] > (int)mblen ? items[i][MLLEN] : (int)mblen;
}
/* lines */
if (mode_lines)
items[i][LINES]++;
count_lines(&items[i][LINES]);
if (mode_words)
count_words(buffer, &items[i][WORDS]);
if (mode_chars)
count_chars(buffer, &items[i][CHARS]);
if (mode_bytes)
count_bytes(buffer, &items[i][BYTES]);
if (mode_mllen)
count_max_line(buffer, &items[i][MLLEN]);
}
if (strcmp(list[i], "/dev/stdin") == 0)
list[i] = "";
@ -123,33 +168,7 @@ void wc(char **list, int count) {
}
for (int i = 1; i < count; i++)
items[TOTAL][MLLEN] = items[TOTAL][MLLEN] > items[i][MLLEN] ? items[TOTAL][MLLEN] : items[i][MLLEN];
/* Ordem das colunas */
for (int i = 1; i < count; i++) { /* -l lines -w words -m chars -c bytes -L max-line-length */
if (mode_lines)
printf("%*d ", intlen(items[TOTAL][LINES]), items[i][LINES]);
if (mode_words)
printf("%*d ", intlen(items[TOTAL][WORDS]), items[i][WORDS]);
if (mode_chars)
printf("%*d ", intlen(items[TOTAL][CHARS]), items[i][CHARS]);
if (mode_bytes)
printf("%*d ", intlen(items[TOTAL][BYTES]), items[i][BYTES]);
if (mode_mllen)
printf("%*d ", intlen(items[TOTAL][MLLEN]), items[i][MLLEN]);
printf("%s\n", list[i]);
}
if (count > 2) { /* Print total */
if (mode_lines)
printf("%*d ", intlen(items[TOTAL][LINES]), items[TOTAL][LINES]);
if (mode_words)
printf("%*d ", intlen(items[TOTAL][WORDS]), items[TOTAL][WORDS]);
if (mode_chars)
printf("%*d ", intlen(items[TOTAL][CHARS]), items[TOTAL][CHARS]);
if (mode_bytes)
printf("%*d ", intlen(items[TOTAL][BYTES]), items[TOTAL][BYTES]);
if (mode_mllen)
printf("%*d ", intlen(items[TOTAL][MLLEN]), items[TOTAL][MLLEN]);
printf("total\n");
}
print_results(list, items, count);
for (int i = 0; i < count; i++) {
free(items[i]);
}
@ -159,7 +178,7 @@ void wc(char **list, int count) {
int main(int argc, char **argv) {
int opt, option_index;
char *list[2];
char *mode_total;
char *totalarg = "";
// short_options = "c, m, l, L, w"
// long_options = "bytes,chars,lines,max-line-length,total,help,version,words"
while ((opt = getopt_long(argc, argv, "cmlLwhv", long_options, &option_index)) != -1) {
@ -184,13 +203,29 @@ int main(int argc, char **argv) {
break;
case 1000:
// auto, always, only, never
mode_total = optarg;
if (strcmp(optarg, "auto") == 0 ||
strcmp(optarg, "always") == 0 ||
strcmp(optarg, "only") == 0 ||
strcmp(optarg, "never") == 0) {
totalarg = optarg;
} else {
fprintf(stderr, "Erro: argumento inválido para --total: \"%s\"\n", optarg);
fprintf(stderr, "Valores permitidos: auto, always, only, never\n");
exit(EXIT_FAILURE);
}
break;
case 'h':
printf("help\n");
printf("Uso: %s [OPÇÕES] [ARQUIVOS...]\n", argv[0]);
printf(" -l, --lines Conta linhas\n");
printf(" -w, --words Conta palavras\n");
printf(" -c, --bytes Conta bytes\n");
printf(" -m, --chars Conta caracteres\n");
printf(" -L, --max-line-length Comprimento máximo de linha\n");
printf(" -h, --help Exibe esta ajuda\n");
printf(" -v, --version Exibe a versão\n");
exit(EXIT_SUCCESS);
case 'v':
printf("version\n");
printf("wc clone %s\n", VERSION);
exit(EXIT_SUCCESS);
default:
abort();
@ -202,11 +237,17 @@ int main(int argc, char **argv) {
mode_lines = true;
mode_words = true;
}
if (argc < 2) {
optind--;
if (((strcmp(totalarg, "") == 0 || strcmp(totalarg, "auto") == 0) && (argc - optind) > 2)
|| strcmp(totalarg, "always") == 0)
mode_total = true;
// else if (strcmp(totalarg, "never") == 0)
// mode_total = false;
/* Ler de stdin ou argumentos */
if ((argc - optind) < 2) {
list[1] = "/dev/stdin";
wc(list, 2);
} else {
optind--;
wc(argv + optind, argc - optind);
}
return EXIT_SUCCESS;