57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/*
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* test-delta.c: test code to exercise diff-delta.c and patch-delta.c
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*
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* (C) 2005 Nicolas Pitre <nico@fluxnic.net>
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*
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* This code is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "test-tool.h"
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#include "git-compat-util.h"
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#include "delta.h"
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#include "strbuf.h"
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static const char usage_str[] =
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"test-tool delta (-d|-p) <from_file> <data_file> <out_file>";
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int cmd__delta(int argc, const char **argv)
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{
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int fd;
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struct strbuf from = STRBUF_INIT, data = STRBUF_INIT;
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char *out_buf;
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unsigned long out_size;
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if (argc != 5 || (strcmp(argv[1], "-d") && strcmp(argv[1], "-p")))
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usage(usage_str);
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if (strbuf_read_file(&from, argv[2], 0) < 0)
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die_errno("unable to read '%s'", argv[2]);
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if (strbuf_read_file(&data, argv[3], 0) < 0)
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die_errno("unable to read '%s'", argv[3]);
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if (argv[1][1] == 'd')
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out_buf = diff_delta(from.buf, from.len,
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data.buf, data.len,
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&out_size, 0);
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else
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out_buf = patch_delta(from.buf, from.len,
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data.buf, data.len,
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&out_size);
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if (!out_buf)
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die("delta operation failed (returned NULL)");
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fd = xopen(argv[4], O_WRONLY|O_CREAT|O_TRUNC, 0666);
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if (write_in_full(fd, out_buf, out_size) < 0)
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die_errno("write(%s)", argv[4]);
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if (close(fd) < 0)
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die_errno("close(%s)", argv[4]);
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strbuf_release(&from);
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strbuf_release(&data);
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free(out_buf);
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return 0;
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}
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