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Diffstat (limited to 'intl/relocatable.h')
-rw-r--r-- | intl/relocatable.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/intl/relocatable.h b/intl/relocatable.h new file mode 100644 index 0000000..f6d3832 --- /dev/null +++ b/intl/relocatable.h @@ -0,0 +1,79 @@ +/* Provide relocatable packages. + Copyright (C) 2003, 2005 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2003. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Library General Public License as published + by the Free Software Foundation; either version 2, 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +#ifndef _RELOCATABLE_H +#define _RELOCATABLE_H + +#ifdef __cplusplus +extern "C" { +#endif + + +/* This can be enabled through the configure --enable-relocatable option. */ +#if ENABLE_RELOCATABLE + +/* When building a DLL, we must export some functions. Note that because + this is a private .h file, we don't need to use __declspec(dllimport) + in any case. */ +#if HAVE_VISIBILITY && BUILDING_DLL +# define RELOCATABLE_DLL_EXPORTED __attribute__((__visibility__("default"))) +#elif defined _MSC_VER && BUILDING_DLL +# define RELOCATABLE_DLL_EXPORTED __declspec(dllexport) +#else +# define RELOCATABLE_DLL_EXPORTED +#endif + +/* Sets the original and the current installation prefix of the package. + Relocation simply replaces a pathname starting with the original prefix + by the corresponding pathname with the current prefix instead. Both + prefixes should be directory names without trailing slash (i.e. use "" + instead of "/"). */ +extern RELOCATABLE_DLL_EXPORTED void + set_relocation_prefix (const char *orig_prefix, + const char *curr_prefix); + +/* Returns the pathname, relocated according to the current installation + directory. */ +extern const char * relocate (const char *pathname); + +/* Memory management: relocate() leaks memory, because it has to construct + a fresh pathname. If this is a problem because your program calls + relocate() frequently, think about caching the result. */ + +/* Convenience function: + Computes the current installation prefix, based on the original + installation prefix, the original installation directory of a particular + file, and the current pathname of this file. Returns NULL upon failure. */ +extern const char * compute_curr_prefix (const char *orig_installprefix, + const char *orig_installdir, + const char *curr_pathname); + +#else + +/* By default, we use the hardwired pathnames. */ +#define relocate(pathname) (pathname) + +#endif + + +#ifdef __cplusplus +} +#endif + +#endif /* _RELOCATABLE_H */ |