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/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <fcntl.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#include "arg.h"
struct result {
ssize_t n;
int width;
};
char *argv0;
static void
usage(void)
{
fprintf(stderr, "usage: %s [-s] [file] ...\n", argv0);
exit(1);
}
static ssize_t
count(int fd, const char *fname)
{
char buf[BUFSIZ], c;
ssize_t i, n, ret = 0;
char quote = 0;
char comment = 0;
signed char escape = 0;
signed char slash = 0;
signed char asterisk = 0;
for (;;) {
n = read(fd, buf, sizeof(buf));
if (n <= 0) {
if (!n)
break;
if (errno == EINTR)
continue;
fprintf(stderr, "%s: %s :%s\n", argv0, fname, strerror(errno));
return -1;
}
for (i = 0; i < n; i++) {
c = buf[i];
again:
if (slash) {
slash = 0;
if (c == '*' || c == '/')
comment = c;
else
goto again;
} else if (comment == '/') {
if (c == '\n')
comment = 0;
} else if (comment == '*') {
if (c == '*') {
asterisk = 1;
} else if (asterisk) {
asterisk = 0;
if (c == '/')
comment = 0;
}
} else if (escape) {
escape = 0;
} else if (quote) {
if (c == '\\')
escape = 1;
else if (c == quote)
quote = 0;
} else if (c == '/') {
slash = 1;
} else if (c == '"' || c == '\'') {
quote = c;
} else if (c == ';') {
ret += 1;
}
}
}
return ret;
}
static ssize_t
open_and_count(const char *path)
{
ssize_t r;
int fd;
if (!path || !strcmp(path, "-")) {
r = count(STDIN_FILENO, "<stdin>");
} else {
fd = open(path, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "%s: %s: %s\n", argv0, path, strerror(errno));
return -1;
}
r = count(fd, path);
close(fd);
}
return r;
}
static int
strwidth(const char *s)
{
size_t wn, n = strlen(s) + 1u;
wchar_t *ws = calloc(n, sizeof(*ws));
int r = -1;
if (!ws) {
fprintf(stderr, "%s: %s\n", argv0, strerror(errno));
exit(1);
}
wn = mbstowcs(ws, s, n);
if (wn != (size_t)-1)
r = wcswidth(ws, wn);
free(ws);
return r < 0 ? (int)n - 1 : r;
}
int
main(int argc, char *argv[])
{
struct result *results;
int sum_only = 0;
int ret = 0;
ssize_t r;
size_t total = 0u;
int i, left, right;
int maxwidth = 0;
ARGBEGIN {
case 's':
sum_only = 1;
break;
default:
usage();
} ARGEND;
setlocale(LC_ALL, "");
if (argc < 2) {
r = open_and_count(argv[0]);
if (r < 0)
return 1;
printf("%zi\n", r);
} else {
results = calloc((size_t)argc, sizeof(*results));
if (!results) {
fprintf(stderr, "%s: %s\n", argv0, strerror(errno));
exit(1);
}
for (i = 0; i < argc; i++) {
results[i].n = open_and_count(argv[0]);
if (results[i].n < 0) {
ret = 1;
continue;
}
left = strwidth(argv[i]);
right = snprintf(NULL, 0u, "%zi", results[i].n);
results[i].width = left + right;
if (maxwidth < results[i].width)
maxwidth = results[i].width;
}
for (i = 0; i < argc; i++) {
if (results[i].n < 0)
continue;
total += (size_t)results[i].n;
if (sum_only)
continue;
printf("%s:%*s %zi\n", argv[i], maxwidth - results[i].width, "", results[i].n);
}
free(results);
printf("%zu\n", total);
}
if (fflush(stdout) || ferror(stdout) || fclose(stdout)) {
fprintf(stderr, "%s: <stdout>: %s\n", argv0, strerror(errno));
exit(1);
}
return ret;
}
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