1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/* See LICENSE file for copyright and license details. */
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
#include "arg.h"
char *argv0;
struct result {
ssize_t n;
int width;
};
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];
ssize_t i, n, ret = 0;
int beginning = 1;
int escaped = 0;
int slash_asterisk = 0;
int cxx_comment = 0;
int c_comment = 0;
char quote = 0;
for (;;) {
n = read(fd, buf, sizeof(buf));
if (n <= 0) {
if (!n)
break;
fprintf(stderr, "%s: %s: %s\n", argv0, fname, strerror(errno));
return -1;
}
for (i = 0; i < n; i++) {
if (quote) {
if (buf[i] == '\n') {
ret += (ssize_t)!beginning;
beginning = 1;
escaped = 0;
continue;
} else if (escaped) {
escaped = 0;
} else if (buf[i] == quote) {
quote = 0;
} else if (buf[i] == '\\') {
escaped = 1;
}
beginning = 0;
} else if (c_comment) {
if (buf[i] == '\n') {
ret += (ssize_t)!beginning;
beginning = 1;
} else if (buf[i] == '*') {
slash_asterisk = 1;
} else if (slash_asterisk) {
slash_asterisk = 0;
if (buf[i] == '/')
c_comment = 0;
}
} else if (cxx_comment) {
if (escaped) {
escaped = 0;
} else if (buf[i] == '\n') {
ret += (ssize_t)!beginning;
beginning = 1;
cxx_comment = 0;
} else if (buf[i] == '\\') {
escaped = 1;
}
} else if (slash_asterisk && buf[i] == '/') {
cxx_comment = 1;
slash_asterisk = 0;
} else if (slash_asterisk && buf[i] == '*') {
c_comment = 1;
slash_asterisk = 0;
} else {
slash_asterisk = 0;
if (buf[i] == '\n') {
ret += (ssize_t)!beginning;
beginning = 1;
escaped = 0;
} else if (strchr("{}()[]\t\f\r\v; ", buf[i])) {
escaped = 0;
} else if (escaped) {
beginning = 0;
escaped = 0;
} else if (buf[i] == '\'' || buf[i] == '"') {
beginning = 0;
quote = buf[i];
} else if (buf[i] == '/') {
slash_asterisk = 1;
} else if (buf[i] == '\\') {
escaped = 1;
} else {
beginning = 0;
}
}
}
}
return ret + (ssize_t)!beginning;
}
static int
strwidth(const char *str)
{
size_t n = strlen(str) + 1;
wchar_t *wcs = calloc(n, sizeof(*wcs));
int r = -1;
if (!wcs)
fprintf(stderr, "%s: out of memory\n", argv0), exit(1);
if (mbstowcs(wcs, str, n) != (size_t)-1)
r = wcswidth(wcs, n);
free(wcs);
return r < 0 ? (int)(n - 1) : r;
}
static int
zuwidth(size_t num)
{
char buf[3 * sizeof(num) + 1];
return sprintf(buf, "%zu", num);
}
int
main(int argc, char *argv[])
{
ssize_t n, total = 0;
struct result *res;
int i, fd, maxleft = 0, maxright = 0, maxwidth, left, right, ret = 0;
int sum_only = 0;
ARGBEGIN {
case 's':
sum_only = 1;
break;
default:
usage();
} ARGEND;
if (argc < 2) {
if (!argc || !strcmp(argv[0], "-")) {
n = count(STDIN_FILENO, "<stdin>");
} else {
fd = open(argv[0], O_RDONLY);
if (fd < 0)
return 1;
n = count(fd, argv[0]);
close(fd);
}
if (n >= 0)
printf("%zi\n", n);
else
ret = 1;
} else {
if (!(res = calloc((size_t)argc, sizeof(struct result))))
fprintf(stderr, "%s: out of memory\n", argv0), exit(1);
for (i = 0; i < argc; i++) {
if (!strcmp(argv[i], "-")) {
res[i].n = count(STDIN_FILENO, "<stdin>");
} else if ((fd = open(argv[i], O_RDONLY)) < 0) {
res[i].n = -1;
} else {
res[i].n = count(fd, argv[i]);
close(fd);
}
if (res[i].n >= 0) {
left = strwidth(argv[i]);
maxleft = left > maxleft ? left : maxleft;
right = zuwidth((size_t)res[i].n);
maxright = right > maxright ? right : maxright;
res[i].width = left + right;
}
}
maxwidth = maxleft + maxright;
for (i = 0; i < argc; i++) {
if (res[i].n < 0) {
ret = 1;
} else {
if (!sum_only)
printf("%s:%*s %zi\n", argv[i], maxwidth - res[i].width, "", res[i].n);
total += res[i].n;
}
}
free(res);
printf("%zi\n", total);
}
if (fflush(stdin) || ferror(stdin) || fclose(stdin))
fprintf(stderr, "%s: <stdout>: %s\n", argv0, strerror(errno)), exit(1);
return ret;
}
|
