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index fa7a8dad7d98a1bb35ca28fb1b896131ee1f13a7..100942ac8ab652fc21c9d2691e9517ca28564c81 100644 (file)
--- a/src/core/store_lookup.c
+++ b/src/core/store_lookup.c
#include <stdlib.h>
#include <string.h>
+#include <limits.h>
+
/*
* private data types
*/
return attr;
} /* attr_get */
+/*
+ * conditional implementations
+ */
+
+static int
+attr_cmp(sdb_store_base_t *obj, sdb_store_cond_t *cond)
+{
+ sdb_attribute_t *attr;
+
+ attr = SDB_ATTR(attr_get(obj, ATTR_C(cond)->name));
+ if (! attr)
+ return INT_MAX;
+ if (attr->value.type != ATTR_C(cond)->value.type)
+ return INT_MAX;
+ return sdb_data_cmp(&attr->value, &ATTR_C(cond)->value);
+} /* attr_cmp */
+
/*
* matcher implementations
*/
return 0;
} /* match_attr */
+static int
+match_lt(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+{
+ int status;
+ assert(m->type == MATCHER_LT);
+ status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond);
+ return (status != INT_MAX) && (status < 0);
+} /* match_lt */
+
+static int
+match_le(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+{
+ int status;
+ assert(m->type == MATCHER_LE);
+ status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond);
+ return (status != INT_MAX) && (status <= 0);
+} /* match_le */
+
+static int
+match_eq(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+{
+ int status;
+ assert(m->type == MATCHER_EQ);
+ status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond);
+ return (status != INT_MAX) && (! status);
+} /* match_eq */
+
+static int
+match_ge(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+{
+ int status;
+ assert(m->type == MATCHER_GE);
+ status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond);
+ return (status != INT_MAX) && (status >= 0);
+} /* match_ge */
+
+static int
+match_gt(sdb_store_matcher_t *m, sdb_store_base_t *obj)
+{
+ int status;
+ assert(m->type == MATCHER_GT);
+ status = COND_M(m)->cond->cmp(obj, COND_M(m)->cond);
+ return (status != INT_MAX) && (status > 0);
+} /* match_gt */
+
typedef int (*matcher_cb)(sdb_store_matcher_t *, sdb_store_base_t *);
/* this array needs to be indexable by the matcher types;
match_unary,
match_name,
match_attr,
+ match_lt,
+ match_le,
+ match_eq,
+ match_ge,
+ match_gt,
+};
+
+/*
+ * private conditional types
+ */
+
+static int
+attr_cond_init(sdb_object_t *obj, va_list ap)
+{
+ const char *name = va_arg(ap, const char *);
+ const sdb_data_t *value = va_arg(ap, const sdb_data_t *);
+
+ if (! name)
+ return -1;
+
+ SDB_STORE_COND(obj)->cmp = attr_cmp;
+
+ ATTR_C(obj)->name = strdup(name);
+ if (! ATTR_C(obj)->name)
+ return -1;
+ if (sdb_data_copy(&ATTR_C(obj)->value, value))
+ return -1;
+ return 0;
+} /* attr_cond_init */
+
+static void
+attr_cond_destroy(sdb_object_t *obj)
+{
+ if (ATTR_C(obj)->name)
+ free(ATTR_C(obj)->name);
+ sdb_data_free_datum(&ATTR_C(obj)->value);
+} /* attr_cond_destroy */
+
+static sdb_type_t attr_cond_type = {
+ /* size = */ sizeof(attr_cond_t),
+ /* init = */ attr_cond_init,
+ /* destroy = */ attr_cond_destroy,
};
/*
return buf;
} /* attr_tostring */
+static int
+cond_matcher_init(sdb_object_t *obj, va_list ap)
+{
+ int type = va_arg(ap, int);
+ sdb_store_cond_t *cond = va_arg(ap, sdb_store_cond_t *);
+
+ if (! cond)
+ return -1;
+
+ sdb_object_ref(SDB_OBJ(cond));
+
+ M(obj)->type = type;
+ COND_M(obj)->cond = cond;
+ return 0;
+} /* cond_matcher_init */
+
+static void
+cond_matcher_destroy(sdb_object_t *obj)
+{
+ sdb_object_deref(SDB_OBJ(COND_M(obj)->cond));
+} /* cond_matcher_destroy */
+
+static char *
+cond_tostring(sdb_store_matcher_t *m, char *buf, size_t buflen)
+{
+ if (COND_M(m)->cond->cmp == attr_cmp) {
+ char value[buflen];
+ if (sdb_data_format(&ATTR_C(COND_M(m)->cond)->value,
+ value, sizeof(value), SDB_SINGLE_QUOTED) < 0)
+ snprintf(value, sizeof(value), "ERR");
+ snprintf(buf, buflen, "ATTR[%s]{ %s %s }",
+ ATTR_C(COND_M(m)->cond)->name, MATCHER_SYM(m->type), value);
+ }
+ return buf;
+} /* cond_tostring */
+
static int
op_matcher_init(sdb_object_t *obj, va_list ap)
{
/* destroy = */ attr_matcher_destroy,
};
+static sdb_type_t cond_type = {
+ /* size = */ sizeof(cond_matcher_t),
+ /* init = */ cond_matcher_init,
+ /* destroy = */ cond_matcher_destroy,
+};
+
static sdb_type_t op_type = {
/* size = */ sizeof(op_matcher_t),
/* init = */ op_matcher_init,
uop_tostring,
name_tostring,
attr_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
+ cond_tostring,
};
/*
* public API
*/
+sdb_store_cond_t *
+sdb_store_attr_cond(const char *name, const sdb_data_t *value)
+{
+ return SDB_STORE_COND(sdb_object_create("attr-cond", attr_cond_type,
+ name, value));
+} /* sdb_store_attr_cond */
+
sdb_store_matcher_t *
sdb_store_name_matcher(int type, const char *name, _Bool re)
{
name, value, NULL));
} /* sdb_store_attr_matcher */
+sdb_store_matcher_t *
+sdb_store_lt_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("lt-matcher", cond_type,
+ MATCHER_LT, cond));
+} /* sdb_store_lt_matcher */
+
+sdb_store_matcher_t *
+sdb_store_le_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("le-matcher", cond_type,
+ MATCHER_LE, cond));
+} /* sdb_store_le_matcher */
+
+sdb_store_matcher_t *
+sdb_store_eq_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("eq-matcher", cond_type,
+ MATCHER_EQ, cond));
+} /* sdb_store_eq_matcher */
+
+sdb_store_matcher_t *
+sdb_store_ge_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("ge-matcher", cond_type,
+ MATCHER_GE, cond));
+} /* sdb_store_ge_matcher */
+
+sdb_store_matcher_t *
+sdb_store_gt_matcher(sdb_store_cond_t *cond)
+{
+ return M(sdb_object_create("gt-matcher", cond_type,
+ MATCHER_GT, cond));
+} /* sdb_store_gt_matcher */
+
sdb_store_matcher_t *
sdb_store_matcher_parse_cmp(const char *obj_type, const char *attr,
const char *op, const char *value)