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provide functions to access map names and lists

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This commit is contained in:
Andreas Gustafsson 2001-02-15 18:53:03 +00:00
parent 2d67fbd786
commit bd4b8fe050
2 changed files with 126 additions and 41 deletions
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59
lib/isccfg/include/isccfg/cfg.h
View File

@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: cfg.h,v 1.2 2001/02/15 05:14:16 gson Exp $ */
/* $Id: cfg.h,v 1.3 2001/02/15 18:53:03 gson Exp $ */
#ifndef DNS_CFG_H
#define DNS_CFG_H 1
@ -63,6 +63,11 @@ typedef struct cfg_type cfg_type_t;
*/
typedef struct cfg_obj cfg_obj_t;
/*
* A configuration object list element.
*/
typedef struct cfg_listelt cfg_listelt_t;
/***
*** Functions
***/
@ -119,6 +124,18 @@ cfg_map_get(cfg_obj_t *mapobj, const char* name, cfg_obj_t **obj);
* ISC_R_NOTFOUND - name not found in map
*/
cfg_obj_t *
cfg_map_getname(cfg_obj_t *mapobj);
/*
* Get the name of a named map object, like a server "key" clause.
*
* Requires:
* 'mapobj' ponts to a valid configuraration object of a map type.
*
* Returns:
* A pointer to a configuration object naming the map object,
* or NULL if the map object does not have a name.
*/
isc_uint32_t
cfg_obj_asuint32(cfg_obj_t *obj);
@ -145,6 +162,46 @@ cfg_obj_asstring(cfg_obj_t *obj);
* A pointer to a null terminated string.
*/
cfg_listelt_t *
cfg_list_first(cfg_obj_t *obj);
/*
* Returns the first list element in a configuration object of a list type.
*
* Requires:
* 'obj' points to a valid configuration object of a list type.
*
* Returns:
* A pointer to a cfg_listelt_t representing the first list element,
* or NULL if the list is empty.
*/
cfg_listelt_t *
cfg_list_next(cfg_listelt_t *elt);
/*
* Returns the next element of a list of configuration objects.
*
* Requires:
* 'elt' points to cfg_listelt_t obtained from cfg_list_first() or
* a previous call to cfg_list_next().
*
* Returns:
* A pointer to a cfg_listelt_t representing the next element,
* or NULL if there are no more elements.
*/
cfg_obj_t *
cfg_listelt_value(cfg_listelt_t *elt);
/*
* Returns the configuration object associated with cfg_listelt_t.
*
* Requires:
* 'elt' points to cfg_listelt_t obtained from cfg_list_first() or
* cfg_list_next().
*
* Returns:
* A non-NULL pointer to a configuration object.
*/
void
cfg_print(cfg_obj_t *obj,
void (*f)(void *closure, const char *text, int textlen),

108
lib/isccfg/parser.c
View File

@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: parser.c,v 1.2 2001/02/15 05:14:15 gson Exp $ */
/* $Id: parser.c,v 1.3 2001/02/15 18:53:02 gson Exp $ */
#include <config.h>
@ -83,7 +83,6 @@
typedef struct cfg_clausedef cfg_clausedef_t;
typedef struct cfg_printer cfg_printer_t;
typedef struct cfg_listelt cfg_listelt_t;
typedef ISC_LIST(cfg_listelt_t) cfg_list_t;
typedef struct cfg_map cfg_map_t;
typedef struct cfg_rep cfg_rep_t;
@ -1316,6 +1315,12 @@ cfg_map_get(cfg_obj_t *mapobj, const char* name, cfg_obj_t **obj) {
return (ISC_R_SUCCESS);
}
cfg_obj_t *
cfg_map_getname(cfg_obj_t *mapobj) {
REQUIRE(mapobj != NULL && mapobj->type->rep == &cfg_rep_map);
return (mapobj->value.map.id);
}
/*
* void
*/
@ -1600,10 +1605,43 @@ static cfg_type_t cfg_type_optional_keyref = {
/*
* Parse a homogeneous list whose elements are of type 'elttype'
* and where each element is terminated by a semicolon.
* Lists.
*/
static isc_result_t
create_list(cfg_parser_t *pctx, cfg_type_t *type, cfg_obj_t **obj) {
isc_result_t result;
CHECK(create_cfgobj(pctx, type, obj));
ISC_LIST_INIT((*obj)->value.list);
cleanup:
return (result);
}
static isc_result_t
create_listelt(cfg_parser_t *pctx, cfg_listelt_t **eltp) {
cfg_listelt_t *elt;
elt = isc_mem_get(pctx->mctx, sizeof(*elt));
if (elt == NULL)
return (ISC_R_NOMEMORY);
elt->obj = NULL;
ISC_LINK_INIT(elt, link);
*eltp = elt;
return (ISC_R_SUCCESS);
}
static void
free_list(cfg_parser_t *pctx, cfg_obj_t *obj) {
cfg_listelt_t *elt, *next;
for (elt = ISC_LIST_HEAD(obj->value.list);
elt != NULL;
elt = next)
{
next = ISC_LIST_NEXT(elt, link);
cfg_obj_destroy(pctx, &elt->obj);
isc_mem_put(pctx->mctx, elt, sizeof(*elt));
}
}
static isc_result_t
parse_list_elt(cfg_parser_t *pctx, cfg_type_t *elttype, cfg_listelt_t **ret)
{
@ -1627,7 +1665,10 @@ parse_list_elt(cfg_parser_t *pctx, cfg_type_t *elttype, cfg_listelt_t **ret)
return (result);
}
/*
* Parse a homogeneous list whose elements are of type 'elttype'
* and where each element is terminated by a semicolon.
*/
static isc_result_t
parse_list(cfg_parser_t *pctx, cfg_type_t *listtype, cfg_obj_t **ret)
{
@ -1734,6 +1775,28 @@ print_spacelist(cfg_printer_t *pctx, cfg_obj_t *obj) {
}
}
cfg_listelt_t *
cfg_list_first(cfg_obj_t *obj) {
REQUIRE(obj != NULL && obj->type->rep == &cfg_rep_list);
return (ISC_LIST_HEAD(obj->value.list));
}
cfg_listelt_t *
cfg_list_next(cfg_listelt_t *elt) {
REQUIRE(elt != NULL);
return (ISC_LIST_NEXT(elt, link));
}
cfg_obj_t *
cfg_listelt_value(cfg_listelt_t *elt) {
REQUIRE(elt != NULL);
return (elt->obj);
}
/*
* Maps.
*/
static void
print_mapbody(cfg_printer_t *pctx, cfg_obj_t *obj) {
isc_result_t result = ISC_R_SUCCESS;
@ -3026,41 +3089,6 @@ free_map(cfg_parser_t *pctx, cfg_obj_t *obj) {
isc_symtab_destroy(&obj->value.map.symtab);
}
static isc_result_t
create_list(cfg_parser_t *pctx, cfg_type_t *type, cfg_obj_t **obj) {
isc_result_t result;
CHECK(create_cfgobj(pctx, type, obj));
ISC_LIST_INIT((*obj)->value.list);
cleanup:
return (result);
}
static isc_result_t
create_listelt(cfg_parser_t *pctx, cfg_listelt_t **eltp) {
cfg_listelt_t *elt;
elt = isc_mem_get(pctx->mctx, sizeof(*elt));
if (elt == NULL)
return (ISC_R_NOMEMORY);
elt->obj = NULL;
ISC_LINK_INIT(elt, link);
*eltp = elt;
return (ISC_R_SUCCESS);
}
static void
free_list(cfg_parser_t *pctx, cfg_obj_t *obj) {
cfg_listelt_t *elt, *next;
for (elt = ISC_LIST_HEAD(obj->value.list);
elt != NULL;
elt = next)
{
next = ISC_LIST_NEXT(elt, link);
cfg_obj_destroy(pctx, &elt->obj);
isc_mem_put(pctx->mctx, elt, sizeof(*elt));
}
}
/*
* Destroy 'obj', a configuration object created in 'pctx'.
*/