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Add alpm_capabilities() method and enumeration 

This allows a frontend program to query, at runtime, what the library
supports. This can be useful for sanity checking during config-
requiring a downloader or disallowing signature settings, for example.

Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Dan McGee 2011-09-21 10:31:30 -05:00
parent 33f2518531
commit d36d70d294
2 changed files with 31 additions and 2 deletions
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25
lib/libalpm/alpm.c
View File

@ -133,9 +133,30 @@ int SYMEXPORT alpm_release(alpm_handle_t *myhandle)
* @brief Various libalpm functions
*/
/* Get the version of library */
const char SYMEXPORT *alpm_version(void) {
/** Get the version of library.
* @return the library version, e.g. "6.0.4"
* */
const char SYMEXPORT *alpm_version(void)
{
return LIB_VERSION;
}
/** Get the capabilities of the library.
* @return a bitmask of the capabilities
* */
enum alpm_caps SYMEXPORT alpm_capabilities(void)
{
return 0
#ifdef ENABLE_NLS
| ALPM_CAPABILITY_NLS
#endif
#ifdef HAVE_LIBCURL
| ALPM_CAPABILITY_DOWNLOADER
#endif
#ifdef HAVE_LIBGPGME
| ALPM_CAPABILITY_SIGNATURES
#endif
| 0;
}
/* vim: set ts=2 sw=2 noet: */

8
lib/libalpm/alpm.h
View File

@ -1186,7 +1186,15 @@ const char *alpm_strerror(enum _alpm_errno_t err);
alpm_handle_t *alpm_initialize(const char *root, const char *dbpath,
enum _alpm_errno_t *err);
int alpm_release(alpm_handle_t *handle);
enum alpm_caps {
ALPM_CAPABILITY_NLS = (1 << 0),
ALPM_CAPABILITY_DOWNLOADER = (1 << 1),
ALPM_CAPABILITY_SIGNATURES = (1 << 2)
};
const char *alpm_version(void);
enum alpm_caps alpm_capabilities(void);
/* End of alpm_api */
/** @} */