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1 #include "types.h"
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2 #include "stat.h"
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3 #include "user.h"
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4
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5 char buf[512];
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6
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7 void
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8 wc(int fd, char *name)
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9 {
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10 int i, n;
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11 int l, w, c, inword;
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12
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13 l = w = c = 0;
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14 inword = 0;
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15 while((n = read(fd, buf, sizeof(buf))) > 0){
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16 for(i=0; i<n; i++){
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17 c++;
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18 if(buf[i] == '\n')
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19 l++;
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20 if(strchr(" \r\t\n\v", buf[i]))
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21 inword = 0;
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22 else if(!inword){
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23 w++;
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24 inword = 1;
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25 }
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26 }
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27 }
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28 if(n < 0){
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29 printf(1, "wc: read error\n");
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30 exit();
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31 }
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32 printf(1, "%d %d %d %s\n", l, w, c, name);
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33 }
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34
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35 int
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36 main(int argc, char *argv[])
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37 {
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38 int fd, i;
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39
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40 if(argc <= 1){
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41 wc(0, "");
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42 exit();
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43 }
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44
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45 for(i = 1; i < argc; i++){
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46 if((fd = open(argv[i], 0)) < 0){
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47 printf(1, "wc: cannot open %s\n", argv[i]);
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48 exit();
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49 }
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50 wc(fd, argv[i]);
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51 close(fd);
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52 }
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53 exit();
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54 }
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