60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/* version.c --- Version handling.
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Copyright (C) 2002-2015 Simon Josefsson
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This file is part of GNU Libidn.
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GNU Libidn is free software: you can redistribute it and/or
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modify it under the terms of either:
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version.
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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or both in parallel, as here.
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GNU Libidn is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "stringprep.h"
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#include <string.h> /* for strverscmp */
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/**
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* stringprep_check_version:
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* @req_version: Required version number, or NULL.
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*
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* Check that the version of the library is at minimum the requested one
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* and return the version string; return NULL if the condition is not
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* satisfied. If a NULL is passed to this function, no check is done,
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* but the version string is simply returned.
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*
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* See %STRINGPREP_VERSION for a suitable @req_version string.
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*
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* Return value: Version string of run-time library, or NULL if the
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* run-time library does not meet the required version number.
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*/
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const char *
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stringprep_check_version (const char *req_version)
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{
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if (!req_version || strverscmp (req_version, STRINGPREP_VERSION) <= 0)
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return STRINGPREP_VERSION;
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return NULL;
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}
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