48 lines
667 B
C
48 lines
667 B
C
#include <inc/lib.h>
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int bol = 1;
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int line = 0;
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void
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num(int f, const char *s)
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{
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long n;
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int r;
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char c;
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while ((n = read(f, &c, 1)) > 0) {
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if (bol) {
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printf("%5d ", ++line);
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bol = 0;
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}
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if ((r = write(1, &c, 1)) != 1)
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panic("write error copying %s: %e", s, r);
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if (c == '\n')
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bol = 1;
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}
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if (n < 0)
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panic("error reading %s: %e", s, n);
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}
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void
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umain(int argc, char **argv)
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{
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int f, i;
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binaryname = "num";
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if (argc == 1)
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num(0, "<stdin>");
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else
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for (i = 1; i < argc; i++) {
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f = open(argv[i], O_RDONLY);
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if (f < 0)
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panic("can't open %s: %e", argv[i], f);
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else {
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num(f, argv[i]);
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close(f);
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}
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}
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exit();
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}
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