hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
40 lines
932 B
C
40 lines
932 B
C
/*
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* Copyright 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* This is a very simple binary editor, used to create corrupted structs for
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* testing. It copies stdin to stdout, replacing bytes beginning at the given
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* offset with the specified 8-bit values.
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*
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* There is NO conversion checking of the arguments.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char *argv[])
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{
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uint32_t offset, curpos, curarg;
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int c;
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if (argc < 3) {
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fprintf(stderr, "Need two or more args: OFFSET VAL [VAL...]\n");
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return 1;
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}
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offset = (uint32_t)strtoul(argv[1], 0, 0);
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curarg = 2;
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for ( curpos = 0; (c = fgetc(stdin)) != EOF; curpos++) {
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if (curpos == offset && curarg < argc) {
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c = (uint8_t)strtoul(argv[curarg++], 0, 0);
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offset++;
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}
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fputc(c, stdout);
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}
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return 0;
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}
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