08.07.2005

1 files changed, 124 insertions, 0 deletions

diff --git a/src/rccdb4.c b/src/rccdb4.c
new file mode 100644
index 0000000..795b721
--- /dev/null
+++ b/src/rccdb4.c
@@ -0,0 +1,124 @@
+#include <stdio.h>
+
+#include "internal.h"
+#include "rccdb4.h"
+
+#define DATABASE "autolearn.db"
+#define MIN_CHARS 3
+
+int rccInitDb4(rcc_context ctx, const char *name, rcc_db4_flags flags) {
+    size_t size;
+    char *dbname;
+    
+    if (!ctx) {
+	if (rcc_default_ctx) ctx = rcc_default_ctx;
+	else return -1;
+    }
+
+    if (!name) name = "default";
+
+    size = strlen(rcc_home_dir) + strlen(name) + 32;
+    dbname = (char*)malloc(size*sizeof(char));
+    if (!dbname) return -1;
+
+    sprintf(dbname,"%s/.rcc/",rcc_home_dir);
+    mkdir(dbname, 00644);
+    
+    sprintf(dbname,"%s/.rcc/%s.db/",rcc_home_dir,name);
+    mkdir(dbname, 00644);
+
+    ctx->db4ctx = rccDb4CreateContext(dbname, flags);
+    free(dbname);	
+    
+    if (!ctx->db4ctx) return -1;
+
+    return 0;
+}
+
+db4_context rccDb4CreateContext(const char *dbpath, rcc_db4_flags flags) {
+    int err;
+    db4_context ctx;
+    DB_ENV *dbe;
+    DB *db;
+    
+    err = db_env_create(&dbe, 0);
+    if (err) return NULL;
+    
+    err = dbe->open(dbe, dbpath, DB_CREATE|DB_INIT_CDB|DB_INIT_MPOOL, 0);
+    if (err) {
+	dbe->close(dbe, 0);
+	return NULL;
+    }
+    
+    err = db_create(&db, dbe, 0);
+    if (err) {
+	dbe->close(dbe, 0);
+	return NULL;
+    }
+    
+    err = db->open(db, NULL, DATABASE, NULL, DB_BTREE, DB_CREATE, 0);
+    if (err) {
+	db->close(db, 0);
+	dbe->close(dbe, 0);
+	return NULL;
+    } 
+
+    ctx = (db4_context)malloc(sizeof(db4_context_s));
+    if (!ctx) {
+    	db->close(db, 0);
+	dbe->close(dbe, 0);
+	return NULL;
+    }
+    
+    ctx->db = db;
+    ctx->dbe = dbe;
+    ctx->flags = flags;
+    return ctx;
+}
+
+void rccDb4FreeContext(db4_context ctx) {
+    if (ctx) {
+	ctx->db->close(ctx->db, 0);
+	ctx->dbe->close(ctx->dbe, 0);
+	free(ctx);
+    }
+}
+
+int rccDb4SetKey(db4_context ctx, const char *orig, size_t olen, const rcc_string string, size_t slen) {
+    int err;
+    DBT key, data;
+
+    if ((!ctx)||(!orig)||(!string)) return -1;
+    
+    memset(&key, 0, sizeof(key));
+    memset(&data, 0, sizeof(data));
+    
+    key.data = (char*)orig;
+    key.size = STRNLEN(orig, olen);
+    data.data = (char*)string;
+    data.size = STRNLEN(string, slen);
+    
+    if (key.size < MIN_CHARS) return -1;
+    
+    err = ctx->db->put(ctx->db, NULL, &key, &data, 0);
+    return err;
+}
+
+rcc_string rccDb4GetKey(db4_context ctx, const char *orig, size_t olen) {
+    int err;
+    DBT key, data;
+
+    if ((!ctx)||(!orig)) return NULL;
+
+    memset(&key, 0, sizeof(key));
+    memset(&data, 0, sizeof(data));
+
+    key.data = (char*)orig;
+    key.size = STRNLEN(orig, olen);
+
+    data.flags = DB_DBT_REALLOC;
+    
+    err = ctx->db->get(ctx->db, NULL, &key, &data, 0);
+    if (err) return NULL;
+    return data.data;
+}