3b34851de1
broken. API has changed a lot and it will still change a little more here and there. The command line tool doesn't have all the required changes to reflect the API changes, so it's easy to get "internal error" or trigger assertions.
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file hex2bin.c
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/// \brief Converts hexadecimal input strings to binary
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//
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// This code has been put into the public domain.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "sysdefs.h"
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#include <stdio.h>
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#include <ctype.h>
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static int
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getbin(int x)
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{
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if (x >= '0' && x <= '9')
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return x - '0';
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if (x >= 'A' && x <= 'F')
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return x - 'A' + 10;
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return x - 'a' + 10;
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}
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int
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main(void)
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{
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while (true) {
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int byte = getchar();
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if (byte == EOF)
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return 0;
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if (!isxdigit(byte))
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continue;
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const int digit = getchar();
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if (digit == EOF || !isxdigit(digit)) {
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fprintf(stderr, "Invalid input\n");
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return 1;
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}
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byte = (getbin(byte) << 4) | getbin(digit);
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if (putchar(byte) == EOF) {
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perror(NULL);
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return 1;
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}
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}
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}
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