nortega/menu-helper
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Add code to create database.

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Nicolás A. Ortega Froysa 2024-09-18 15:31:47 +02:00
parent 6ce5417c70
commit 9bc45d634e
3 changed files with 99 additions and 2 deletions
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4
Makefile
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@ -20,8 +20,8 @@ INCFLAGS=
LDFLAGS=-lsqlite3
DEFS=
CFLAGS=$(INCFLAGS) -std=c99 -Wall -Wextra -Wfatal-errors -Werror
HDRS=src/arg_parse.h src/util.h
OBJS=src/main.o src/arg_parse.o
HDRS=src/arg_parse.h src/util.h src/db.h
OBJS=src/main.o src/arg_parse.o src/db.o
VERSION=1.0
ifeq ($(PREFIX),)

76
src/db.c Normal file
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@ -0,0 +1,76 @@
/*
* Copyright (C) 2024 Nicolás Ortega Froysa <nicolas@ortegas.org>
* Nicolás Ortega Froysa <nicolas@ortegas.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "db.h"
#include <sqlite3.h>
#include <unistd.h>
#include <sys/stat.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
static sqlite3 *db = NULL;
static const int db_version = 1;
int db_open(void) {
const char *xdg_data_home;
char *db_path;
int new_db = 0;
int rc;
if(!(xdg_data_home = getenv("XDG_DATA_HOME"))) {
printf("Cannot find environment variable XDG_DATA_HOME. Please define it before continuing. E.g.:\nexport XDG_DATA_HOME=\"$HOME/.local/share\"\n");
return 0;
}
db_path = malloc(strlen(xdg_data_home) + strlen("/menu-helper") + strlen("/recipes.db") + 1);
strcpy(db_path, xdg_data_home);
strcat(db_path, "/menu-helper");
if(access(db_path, F_OK) != 0) {
printf("Creating database: %s\n", db_path);
mkdir(db_path, 0700);
new_db = 1;
}
strcat(db_path, "/recipes.db");
rc = sqlite3_open(db_path, &db);
free(db_path);
if(rc == SQLITE_OK && new_db) {
char insert_version_stmt[64];
sqlite3_exec(db, "CREATE TABLE db_version(version INTEGER UNIQUE NOT NULL);", NULL, NULL, NULL);
snprintf(insert_version_stmt, 64, "INSERT INTO db_version VALUES(%d);", db_version);
sqlite3_exec(db, insert_version_stmt, NULL, NULL, NULL);
sqlite3_exec(db, "CREATE TABLE tags(id INTEGER PRIMARY KEY AUTOINCREMENT, name STRING UNIQUE);", NULL, NULL, NULL);
sqlite3_exec(db, "CREATE TABLE ingredients(id INTEGER PRIMARY KEY AUTOINCREMENT, name STRING UNIQUE);", NULL, NULL, NULL);
sqlite3_exec(db, "CREATE TABLE recipes(id INTEGER PRIMARY KEY AUTOINCREMENT, name STRING UNIQUE, description STRING);", NULL, NULL, NULL);
sqlite3_exec(db, "CREATE TABLE recipe_tag(recipe_id INTEGER REFERENCES recipes(id) ON DELETE CASCADE, tag_id INTEGER REFERENCES tags(id) ON DELETE CASCADE);", NULL, NULL, NULL);
sqlite3_exec(db, "CREATE TABLE recipe_ingredient(recipe_id INTEGER REFERENCES recipes(id) ON DELETE CASCADE, ingredient_id INTEGER REFERENCES ingredients(id) ON DELETE CASCADE);", NULL, NULL, NULL);
}
return rc == SQLITE_OK;
}
void db_close(void) {
if(!db)
return;
sqlite3_close(db);
}

21
src/db.h Normal file
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@ -0,0 +1,21 @@
/*
* Copyright (C) 2024 Nicolás Ortega Froysa <nicolas@ortegas.org>
* Nicolás Ortega Froysa <nicolas@ortegas.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
int db_open(void);
void db_close(void);