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/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
/*
* replacebytes.c
*
* Replaces the specified set of bytes in a file by the bytes in
* the input string. The general invocation is:
* relacebytes <filein> <start> <nbytes> <string> <fileout>
* where <start> is the start location in the file to begin replacing,
* <nbytes> is the number of bytes to be removed from the input,
* beginning at the start location, and
* <string> is the replacement string.
*
* To simply remove <nbytes> without replacing:
* relacebytes <filein> <start> <nbytes> <fileout>
*
* One use of the general case is for replacing the date/time in a
* pdf file by a string of 12 '0's. This removes the date without
* invalidating the byte counters:
* replacebytes <filein.pdf> 86 12 000000000000 <outfile.pdf>
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_H */
#include "allheaders.h"
#include "string.h"
int main(int argc,
char **argv)
{
l_int32 start, nbytes;
char *filein, *fileout, *newstr;
static char mainName[] = "replacebytes";
if (argc != 5 && argc != 6)
return ERROR_INT(
"syntax: replacebytes filein start nbytes [string] fileout",
mainName, 1);
filein = argv[1];
start = atof(argv[2]);
nbytes = atof(argv[3]);
if (argc == 5) {
fileout = argv[4];
} else {
newstr = argv[4];
fileout = argv[5];
}
if (argc == 5) {
return fileReplaceBytes(filein, start, nbytes, NULL, 0, fileout);
} else { /* argc == 6 */
return fileReplaceBytes(filein, start, nbytes, (l_uint8 *)newstr,
strlen(newstr), fileout);
}
}
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