diff options
Diffstat (limited to 'include/search.h')
| -rw-r--r-- | include/search.h | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/include/search.h b/include/search.h index 93e1cbc..13d3be6 100644 --- a/include/search.h +++ b/include/search.h @@ -32,6 +32,12 @@ #define __set_errno(val) do { errno = val; } while (0) +enum env_op { + env_op_create, + env_op_delete, + env_op_overwrite, +}; + /* Action which shall be performed in the call the hsearch. */ typedef enum { FIND, @@ -41,6 +47,9 @@ typedef enum { typedef struct entry { const char *key; char *data; + int (*callback)(const char *name, const char *value, enum env_op op, + int flags); + int flags; } ENTRY; /* Opaque type for internal use. */ @@ -59,21 +68,20 @@ struct hsearch_data { unsigned int filled; /* * Callback function which will check whether the given change for variable - * "name" from "oldval" to "newval" may be applied or not, and possibly apply - * such change. + * "item" to "newval" may be applied or not, and possibly apply such change. * When (flag & H_FORCE) is set, it shall not print out any error message and * shall force overwriting of write-once variables. .* Must return 0 for approval, 1 for denial. */ - int (*apply)(const char *name, const char *oldval, - const char *newval, int flag); + int (*change_ok)(const ENTRY *__item, const char *newval, enum env_op, + int flag); }; /* Create a new hashing table which will at most contain NEL elements. */ extern int hcreate_r(size_t __nel, struct hsearch_data *__htab); /* Destroy current internal hashing table. */ -extern void hdestroy_r(struct hsearch_data *__htab, int do_apply); +extern void hdestroy_r(struct hsearch_data *__htab); /* * Search for entry matching ITEM.key in internal hash table. If @@ -82,7 +90,7 @@ extern void hdestroy_r(struct hsearch_data *__htab, int do_apply); * ITEM.data. * */ extern int hsearch_r(ENTRY __item, ACTION __action, ENTRY ** __retval, - struct hsearch_data *__htab); + struct hsearch_data *__htab, int __flag); /* * Search for an entry matching `MATCH'. Otherwise, Same semantics @@ -99,10 +107,10 @@ extern int hstrstr_r(const char *__match, int __last_idx, ENTRY ** __retval, /* Search and delete entry matching ITEM.key in internal hash table. */ extern int hdelete_r(const char *__key, struct hsearch_data *__htab, - int do_apply); + int __flag); extern ssize_t hexport_r(struct hsearch_data *__htab, - const char __sep, char **__resp, size_t __size, + const char __sep, int __flag, char **__resp, size_t __size, int argc, char * const argv[]); /* @@ -113,10 +121,15 @@ extern ssize_t hexport_r(struct hsearch_data *__htab, */ extern int himport_r(struct hsearch_data *__htab, const char *__env, size_t __size, const char __sep, - int __flag, int nvars, char * const vars[], int do_apply); + int __flag, int nvars, char * const vars[]); + +/* Walk the whole table calling the callback on each element */ +extern int hwalk_r(struct hsearch_data *__htab, int (*callback)(ENTRY *)); -/* Flags for himport_r() */ -#define H_NOCLEAR (1 << 0) /* do not clear hash table before importing */ -#define H_FORCE (1 << 1) /* overwrite read-only/write-once variables */ +/* Flags for himport_r(), hexport_r(), hdelete_r(), and hsearch_r() */ +#define H_NOCLEAR (1 << 0) /* do not clear hash table before importing */ +#define H_FORCE (1 << 1) /* overwrite read-only/write-once variables */ +#define H_INTERACTIVE (1 << 2) /* indicate that an import is user directed */ +#define H_HIDE_DOT (1 << 3) /* don't print env vars that begin with '.' */ #endif /* search.h */ |