7e6c37e67e
One test case for returning a exit status Passes usertests, but haven't used it to simplify tests
55 lines
836 B
C
55 lines
836 B
C
#include "kernel/types.h"
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#include "kernel/stat.h"
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#include "user/user.h"
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char buf[512];
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void
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wc(int fd, char *name)
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{
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int i, n;
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int l, w, c, inword;
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l = w = c = 0;
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inword = 0;
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while((n = read(fd, buf, sizeof(buf))) > 0){
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for(i=0; i<n; i++){
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c++;
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if(buf[i] == '\n')
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l++;
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if(strchr(" \r\t\n\v", buf[i]))
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inword = 0;
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else if(!inword){
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w++;
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inword = 1;
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}
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}
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}
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if(n < 0){
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printf("wc: read error\n");
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exit(-1);
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}
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printf("%d %d %d %s\n", l, w, c, name);
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}
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int
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main(int argc, char *argv[])
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{
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int fd, i;
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if(argc <= 1){
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wc(0, "");
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exit(0);
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}
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for(i = 1; i < argc; i++){
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if((fd = open(argv[i], 0)) < 0){
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printf("wc: cannot open %s\n", argv[i]);
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exit(-1);
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}
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wc(fd, argv[i]);
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close(fd);
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}
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exit(0);
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}
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