zig-sqlite

zig 0.14.dev

I thank "nDimensional" it is on this basis that I undertook to work, it remains simple, it is not a real duplication, because I updated so that it works from zig 0.14.dev. I added some functions:

pub isDir( vdir : []const u8) bool ...

pub isDbxist( vdir : []const u8, fn_file_name:[]const u8) bool ...

pub open(vdir : []const u8, name: []const u8) !Database ...

pub fn open(vdir : []const u8, name: []const u8) !Database ...

pub fn openTmp(tDir: std.fs.Dir, name: []const u8) !Database ...

pub fn cbool(data : i32 ) bool ...

TEST. Testsql.zig :

a complete test cycle is made available to you and functional.

Simple, low-level, explicitly-typed SQLite bindings for Zig.

Table of Contents

• Usage

  • Methods
  • Queries

• Notes

• Build options

• License

• [Avancement](#avancement

• [Conditionnement](#conditionnement

Then add sqlite as an import to your root modules in build.zig:

fn build(b: *std.Build) void {
    const app = b.addExecutable(.{ ... });
    // ...

    const sqlite = b.dependency("sqlite", .{});
    app.root_module.addImport("sqlite", sqlite.module("sqlite"));
}

Usage

Open databases using Database.open and close them with db.close():

const sql3 = @import("sqlite");

{
    // in-memory database
    const db = try sql3.open("sqlite", "db.sqlite");
    defer db.close();

}

{
    // persistent database
    const db = try sql3.Database.open(.{ .path = "path/to/db.sqlite" });
    defer db.close();
}

Text and blob values must not be retained across steps. You are responsible for copying them.

Notes

Crafting sensible Zig bindings for SQLite involves making tradeoffs between following the Zig philosophy ("deallocation must succeed") and matching the SQLite API, in which closing databases or finalizing statements may return error codes.

This library takes the following approach:

• Database.close calls sqlite3_close_v2 and panics if it returns an error code.
• Statement.finalize calls sqlite3_finalize and panics if it returns an error code.
• Statement.step automatically calls sqlite3_reset if sqlite3_step returns an error code.
  • In SQLite, sqlite3_reset returns the error code from the most recent call to sqlite3_step. This is handled gracefully.
• Statement.reset calls both sqlite3_reset and sqlite3_clear_bindings, and panics if either return an error code.

These should only result in panic through gross misuse or in extremely unusual situations, e.g. sqlite3_reset failing internally. All "normal" errors are faithfully surfaced as Zig errors.

Build options

struct {
    SQLITE_ENABLE_COLUMN_METADATA: bool = false,
    SQLITE_ENABLE_DBSTAT_VTAB:     bool = false,
    SQLITE_ENABLE_FTS3:            bool = false,
    SQLITE_ENABLE_FTS4:            bool = false,
    SQLITE_ENABLE_FTS5:            bool = false,
    SQLITE_ENABLE_GEOPOLY:         bool = false,
    SQLITE_ENABLE_ICU:             bool = false,
    SQLITE_ENABLE_MATH_FUNCTIONS:  bool = false,
    SQLITE_ENABLE_RBU:             bool = false,
    SQLITE_ENABLE_RTREE:           bool = false,
    SQLITE_ENABLE_STAT4:           bool = false,
    SQLITE_OMIT_DECLTYPE:          bool = false,
    SQLITE_OMIT_JSON:              bool = false,
    SQLITE_USE_URI:                bool = false,
    SQLITE_OMIT_DEPRECATED:        bool = false,
}

Set these by passing e.g. -DSQLITE_ENABLE_RTREE in the CLI, or by setting .SQLITE_ENABLE_RTREE = true in the args parameter to std.Build.dependency. For example:

pub fn build(b: *std.Build) !void {
    // ...

    const sqlite = b.dependency("sqlite", .{ .SQLITE_ENABLE_RTREE = true,.SQLITE_OMIT_DEPRECATED = true  });
}

##Conditionnment

pub const Blob = struct { data: []const u8 };
pub const Text = struct { data: []const u8 };
pub const Numeric = struct { data: []const u8 };
pub const Date = struct { data: []const u8 };
pub const Bool = struct { data: bool};

ex: src-zig/sqlite.zig

libsql/sqlite/sqlite.zig

switch (binding.type) {
                        .int32 => try stmt.bindInt32(idx, @intCast(value)),
                        .int64 => try stmt.bindInt64(idx, @intCast(value)),
                        .float64 => try stmt.bindFloat64(idx, @floatCast(value)),
                        .blob => try stmt.bindBlob(idx, value),
                        .text => try stmt.bindText(idx, value),
                        .numeric => try stmt.bindNumeric(idx, value),
                        .date => try stmt.bindDate(idx, value),
                        .boolean => try stmt.bindBoolean(idx, value),
                    }

text = null -> ""
date = null -> ""
numeric = null -> ""
example delivery date null = delivery not processed

Avancement

→ 2025-01-07 01:00 update Implementation of extended procedures of the zig "libsql" lib while respecting the structure of SQLITE3
The Date function is under study.
.