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support/support_compare_file_bytes.c
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Paul Eggert
Update copyright dates with scripts/update-copyrights
02 янв 2026, 00:42
02 янв 2026, 00:42
66f3e92
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/* Compare bytes from an open file. Copyright (C) 2024-2026 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <https://www.gnu.org/licenses/>. */ #include <stdio.h> #include <support/file_contents.h> /* Check that an already-open file has exactly the given bytes, starting at the current offset. */ int support_compare_file_bytes (FILE *fp, const char *contents, size_t length) { int c; while (length > 0) { c = getc (fp); if (c == EOF || (unsigned char) c != (unsigned char) contents[0]) return 1; contents++; length--; } c = getc (fp); if (c != EOF || ferror (fp)) return 1; return 0; }