new: first database functions

src/database/database.c

@@ -0,0 +1,60 @@
+#include "../../include/database.h"
+#include "../../include/package.h"
+#include "../../include/error.h"
+#include "../../include/util.h"
+
+#include <sqlite3.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+
+char *queries[] = {
+  "CREATE TABLE IF NOT EXISTS packages (" \
+  "       name TEXT PRIMARY KEY NOT NULL," \
+  "       desc TEXT NOT NULL," \
+  "       version TEXT NOT NULL," \
+  "       size INT NOT NULL," \
+  "       depends TEXT NOT NULL);",
+
+  "INSERT INTO packages VALUES (?, ?, ?, ?, ?)",
+};
+
+lm_database_t *lm_database_new(char *path){
+  lm_database_t *db = malloc(sizeof(lm_database_t));
+  char *err = NULL;
+  bzero(db, sizeof(lm_database_t));
+
+  if(exists(path) && !can_read(path)){
+    lm_error_set(LM_ERR_DbCantAccess);
+    return NULL;
+  }
+  
+  if(sqlite3_open(path, &db->sql)){
+    pdebug(__func__, "(%s) failed to open databse: %s", path, sqlite3_errmsg(db->sql));
+    lm_error_set(LM_ERR_DbSqlOpenFail);
+    return NULL;
+  }
+  
+  if(sqlite3_exec(db->sql, queries[QUERY_CREATE_TABLE], NULL, 0, &err) != SQLITE_OK){
+    pdebug(__func__, "(%s) failed to create packages table: %s", path, err);
+    lm_error_set(LM_ERR_DbSqlCreateFail);
+    sqlite3_free(err);
+  }
+
+  db->path = strdup(path);
+  return db;
+}
+
+void lm_database_free(lm_database_t *db){
+  sqlite3_close(db->sql);
+  free(db->path);
+
+  lm_pkg_t *cur = db->pkg, *prev = NULL;
+  while(NULL != cur){
+    prev = cur;
+    cur = cur->next;
+    lm_package_free(prev);
+  }
+
+  free(db);
+}

src/database/package.c

@@ -0,0 +1,53 @@
+#include "../../include/database.h"
+#include "../../include/package.h"
+#include "../../include/error.h"
+#include "../../include/util.h"
+
+#include <sqlite3.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+
+bool lm_database_package_add(lm_database_t *db, lm_pkg_t *pkg){
+  if(NULL == db || NULL == pkg){
+    lm_error_set(LM_ERR_ArgNULL);
+    return false;
+  }
+
+  char depends[lm_package_depend_strlen(pkg)];
+  sqlite3_stmt *insert = NULL;
+  bool ret = false;
+
+  if(sqlite3_prepare(db->sql, queries[QUERY_INSERT_PACKAGE], strlen(queries[QUERY_INSERT_PACKAGE]), &insert, NULL) != SQLITE_OK){
+    pdebug(__func__, "(%s) failed to prepare statement: %s", db->path, sqlite3_errmsg(db->sql));
+    lm_error_set(LM_ERR_DbSqlPrepareFail);
+    goto end;
+  }
+
+  sqlite3_bind_text(insert, 1, pkg->name, strlen(pkg->name), SQLITE_STATIC);
+  sqlite3_bind_text(insert, 2, pkg->desc, strlen(pkg->desc), SQLITE_STATIC);
+  sqlite3_bind_text(insert, 3, pkg->version, strlen(pkg->version), SQLITE_STATIC);
+  sqlite3_bind_int64(insert, 4, pkg->size);
+
+  if(!lm_package_depend_tostr(pkg, depends)){
+    pdebug(__func__, "(%s) failed to convert depends to string: %s", db->path, lm_strerror());
+    goto end;
+  }
+  sqlite3_bind_text(insert, 5, depends, strlen(depends), SQLITE_STATIC);
+
+  if(sqlite3_step(insert) != SQLITE_OK){
+    pdebug(__func__, "(%s) failed to execute insert statement: %s", db->path, sqlite3_errmsg(db->sql));
+    lm_error_set(LM_ERR_DbSqlInsertFail);
+    goto end;
+  }
+
+  ret = true;
+end:
+  if(NULL != insert)
+    sqlite3_finalize(insert);
+  return ret;
+}
+
+bool lm_database_package_find(lm_database_t *db, lm_pkg_t *pkg){
+  return true;
+}