33 lines
722 B
33 lines
722 B
/* |
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* Simple random data generator used to create reproducible test files. |
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* This is inspired from POSIX.1-2001 implementation example for rand(). |
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* Copyright (C) 2007 by Nicolas Pitre, licensed under the GPL version 2. |
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*/ |
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#include "git-compat-util.h" |
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int main(int argc, char *argv[]) |
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{ |
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unsigned long count, next = 0; |
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unsigned char *c; |
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if (argc < 2 || argc > 3) { |
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fprintf(stderr, "Usage: %s <seed_string> [<size>]\n", argv[0]); |
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return 1; |
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} |
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c = (unsigned char *) argv[1]; |
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do { |
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next = next * 11 + *c; |
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} while (*c++); |
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count = (argc == 3) ? strtoul(argv[2], NULL, 0) : -1L; |
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while (count--) { |
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next = next * 1103515245 + 12345; |
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if (putchar((next >> 16) & 0xff) == EOF) |
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return -1; |
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} |
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return 0; |
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}
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