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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 00:53:35 +0000 |
commit | 69c6a41ffb878ef98c9378ed4b1634a404cfaa7f (patch) | |
tree | b2a4f704565d62fbb129ab9dc3b35977c50e6e7f /src/contrib/getline.c | |
parent | Initial commit. (diff) | |
download | knot-upstream.tar.xz knot-upstream.zip |
Adding upstream version 2.7.6.upstream/2.7.6upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/contrib/getline.c')
-rw-r--r-- | src/contrib/getline.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/contrib/getline.c b/src/contrib/getline.c new file mode 100644 index 0000000..074c511 --- /dev/null +++ b/src/contrib/getline.c @@ -0,0 +1,60 @@ +/* Copyright (C) 2011 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +// FreeBSD POSIX2008 getline +#ifndef _WITH_GETLINE +#define _WITH_GETLINE +#endif + +#include "contrib/getline.h" + +#include <stdio.h> // getline or fgetln +#include <stdlib.h> // free +#include <string.h> // memcpy + +ssize_t knot_getline(char **lineptr, size_t *n, FILE *stream) +{ +#ifdef HAVE_GETLINE + return getline(lineptr, n, stream); +#else +#ifdef HAVE_FGETLN + size_t length = 0; + char *buffer = fgetln(stream, &length); + if (buffer == NULL) { + return -1; + } + + /* NOTE: Function fgetln doesn't return terminated string! + * Output buffer from the fgetln can't be freed. + */ + + // If the output buffer is not specified or is small, extend it. + if (*lineptr == NULL || *n <= length) { + char *tmp = realloc(*lineptr, length + 1); + if (tmp == NULL) { + return -1; + } + *lineptr = tmp; + *n = length + 1; + } + + memcpy(*lineptr, buffer, length); + (*lineptr)[length] = '\0'; + + return length; +#endif +#endif +} |