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Dario48 2025-08-30 15:26:01 +02:00
commit e1d3d98fed
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3
.gitignore vendored Normal file
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zig-out
.zig-cache
.DS_Store

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build.zig Normal file
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const std = @import("std");
// Although this function looks imperative, note that its job is to
// declaratively construct a build graph that will be executed by an external
// runner.
pub fn build(b: *std.Build) void {
const target = b.standardTargetOptions(.{});
const optimize = b.standardOptimizeOption(.{});
const lib_mod = b.createModule(.{
.root_source_file = b.path("src/root.zig"),
.target = target,
.optimize = optimize,
});
const exe_mod = b.createModule(.{
.root_source_file = b.path("src/main.zig"),
.target = target,
.optimize = optimize,
});
exe_mod.addImport("taggr_lib", lib_mod);
const lib = b.addLibrary(.{
.linkage = .static,
.name = "taggr",
.root_module = lib_mod,
});
b.installArtifact(lib);
const exe = b.addExecutable(.{
.name = "taggr",
.root_module = exe_mod,
});
b.installArtifact(exe);
const run_cmd = b.addRunArtifact(exe);
run_cmd.step.dependOn(b.getInstallStep());
if (b.args) |args| {
run_cmd.addArgs(args);
}
const run_step = b.step("run", "Run the app");
run_step.dependOn(&run_cmd.step);
const lib_unit_tests = b.addTest(.{
.root_module = lib_mod,
});
const run_lib_unit_tests = b.addRunArtifact(lib_unit_tests);
const exe_unit_tests = b.addTest(.{
.root_module = exe_mod,
});
const run_exe_unit_tests = b.addRunArtifact(exe_unit_tests);
const test_step = b.step("test", "Run unit tests");
test_step.dependOn(&run_lib_unit_tests.step);
test_step.dependOn(&run_exe_unit_tests.step);
}

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build.zig.zon Normal file
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.{
// This is the default name used by packages depending on this one. For
// example, when a user runs `zig fetch --save <url>`, this field is used
// as the key in the `dependencies` table. Although the user can choose a
// different name, most users will stick with this provided value.
//
// It is redundant to include "zig" in this name because it is already
// within the Zig package namespace.
.name = .taggr,
// This is a [Semantic Version](https://semver.org/).
// In a future version of Zig it will be used for package deduplication.
.version = "0.0.0",
// Together with name, this represents a globally unique package
// identifier. This field is generated by the Zig toolchain when the
// package is first created, and then *never changes*. This allows
// unambiguous detection of one package being an updated version of
// another.
//
// When forking a Zig project, this id should be regenerated (delete the
// field and run `zig build`) if the upstream project is still maintained.
// Otherwise, the fork is *hostile*, attempting to take control over the
// original project's identity. Thus it is recommended to leave the comment
// on the following line intact, so that it shows up in code reviews that
// modify the field.
.fingerprint = 0x90c511a182377f7b, // Changing this has security and trust implications.
// Tracks the earliest Zig version that the package considers to be a
// supported use case.
.minimum_zig_version = "0.14.1",
// This field is optional.
// Each dependency must either provide a `url` and `hash`, or a `path`.
// `zig build --fetch` can be used to fetch all dependencies of a package, recursively.
// Once all dependencies are fetched, `zig build` no longer requires
// internet connectivity.
.dependencies = .{
// See `zig fetch --save <url>` for a command-line interface for adding dependencies.
//.example = .{
// // When updating this field to a new URL, be sure to delete the corresponding
// // `hash`, otherwise you are communicating that you expect to find the old hash at
// // the new URL. If the contents of a URL change this will result in a hash mismatch
// // which will prevent zig from using it.
// .url = "https://example.com/foo.tar.gz",
//
// // This is computed from the file contents of the directory of files that is
// // obtained after fetching `url` and applying the inclusion rules given by
// // `paths`.
// //
// // This field is the source of truth; packages do not come from a `url`; they
// // come from a `hash`. `url` is just one of many possible mirrors for how to
// // obtain a package matching this `hash`.
// //
// // Uses the [multihash](https://multiformats.io/multihash/) format.
// .hash = "...",
//
// // When this is provided, the package is found in a directory relative to the
// // build root. In this case the package's hash is irrelevant and therefore not
// // computed. This field and `url` are mutually exclusive.
// .path = "foo",
//
// // When this is set to `true`, a package is declared to be lazily
// // fetched. This makes the dependency only get fetched if it is
// // actually used.
// .lazy = false,
//},
},
// Specifies the set of files and directories that are included in this package.
// Only files and directories listed here are included in the `hash` that
// is computed for this package. Only files listed here will remain on disk
// when using the zig package manager. As a rule of thumb, one should list
// files required for compilation plus any license(s).
// Paths are relative to the build root. Use the empty string (`""`) to refer to
// the build root itself.
// A directory listed here means that all files within, recursively, are included.
.paths = .{
"build.zig",
"build.zig.zon",
"src",
// For example...
//"LICENSE",
//"README.md",
},
}

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src/main.zig Normal file
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//! cli application to tag files
//! todo: make it work
pub fn main() !void {
var tags = try lib.retrieve_tags(.{});
defer lib.deallocate_top_tag(&tags);
var image = try lib.get_images(tags.tags[0]);
defer image.deinit();
}
const std = @import("std");
const lib = @import("taggr_lib");

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src/root.zig Normal file
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//! library that tags photos and keeps track of them
//! todo: implement
const std = @import("std");
const builtin = @import("builtin");
pub const errors = error{UnsupportedPlatform};
pub const retrieve_options = struct {
pub const tags = struct {
path: ?std.fs.Dir = null,
allocator: std.mem.Allocator = std.heap.smp_allocator,
};
};
const top_tag = struct {
allocator: std.mem.Allocator,
path: std.fs.Dir,
tags: []tag,
zon: zon_struct,
};
const tag = struct {
name: []const u8,
parent: *top_tag,
children: ?[]tag,
};
const zon_struct = struct {
name: []const u8,
children: ?[]zon_struct,
};
const zon_file_struct = struct {
name: []u8,
filename: []u8,
};
const zon_tag_struct = struct {
files: []zon_file_struct,
};
pub fn retrieve_tags(options: retrieve_options.tags) !top_tag {
var buffer: [1024]u8 = undefined;
const conf_dir: std.fs.Dir = if (options.path) |user_conf_dir| user_conf_dir else switch (builtin.os.tag) {
.windows => blk: {
const homedir = try std.process.getEnvVarOwned(options.allocator, "APPDATA");
defer options.allocator.free(homedir);
const home_dir = try std.fs.openDirAbsolute(homedir, .{});
break :blk home_dir.openDir("taggr", .{}) catch |open_dir_err| switch (open_dir_err) {
error.FileNotFound => {
std.log.debug("FileNotFound, falling back to makeOpenPath", .{});
try home_dir.makeOpenPath("taggr", .{});
},
else => return open_dir_err,
};
},
.linux,
.openbsd,
.freebsd,
.dragonfly,
.netbsd,
.macos,
=> blk: {
const homedir = try std.process.getEnvVarOwned(options.allocator, "HOME");
defer options.allocator.free(homedir);
const home_dir = try std.fs.openDirAbsolute(homedir, .{});
break :blk home_dir.openDir(".local/share/taggr", .{}) catch |open_dir_err| switch (open_dir_err) {
error.FileNotFound => blk_inner: {
std.log.debug("FileNotFound, falling back to makeOpenPath", .{});
break :blk_inner try home_dir.makeOpenPath(".local/share/taggr", .{});
},
else => return open_dir_err,
};
},
else => return errors.UnsupportedPlatform,
};
std.log.debug("path: {s}", .{try conf_dir.realpath(".", &buffer)});
const conf_path = if (options.path) |config_path| config_path.openFile("config.zon", .{}) catch |open_file_err| switch (open_file_err) {
error.FileNotFound => try config_path.createFile("config.zon", .{}),
else => return open_file_err,
} else conf_dir.createFile("config.zon", .{}) catch |open_file_err| switch (open_file_err) {
error.FileNotFound => blk: {
std.log.debug("FileNotFound, falling back to createFile", .{});
break :blk try conf_dir.createFile("config.zon", .{});
},
else => return open_file_err,
};
var initTag = top_tag{
.tags = undefined,
.allocator = options.allocator,
.path = conf_dir,
.zon = undefined,
};
var diag = std.zon.parse.Diagnostics{};
var zon_file = std.Io.Writer.Allocating.init(options.allocator);
var conf_path_buffer: [1024]u8 = undefined;
var reader = conf_path.reader(&conf_path_buffer).interface;
var stdout_buffer: [1024]u8 = undefined;
var stdout = std.fs.File.stdout().writer(&stdout_buffer);
_ = reader.stream(&stdout.interface, .unlimited) catch |stream_error| switch (stream_error) {
error.EndOfStream => {},
else => return stream_error,
};
try stdout.interface.flush();
_ = reader.stream(&zon_file.writer, .unlimited) catch |stream_error| switch (stream_error) {
error.EndOfStream => {},
else => return stream_error,
};
const zon_file_written = zon_file.written();
const zon = std.zon.parse.fromSlice(zon_struct, options.allocator, zon_file_written[0 .. zon_file_written.len - 1 :0], &diag, .{}) catch |zon_error| switch (zon_error) {
error.ParseZon => {
var Writer = std.Io.Writer.Allocating.init(options.allocator);
try diag.format(&Writer.writer);
std.log.err("\n", .{});
std.log.err("{s}", .{Writer.written()});
diag.deinit(options.allocator);
Writer.deinit();
return zon_error;
},
else => return zon_error,
};
conf_path.close();
zon_file.deinit();
initTag.tags = try parse_zon_tag_root(zon, options.allocator, &initTag);
return initTag;
}
fn parse_zon_tag_root(zon_root: zon_struct, allocator: std.mem.Allocator, parent: *top_tag) ![]tag {
return (try optional_zon_struct_slice_to_optional_tag_slice(zon_root.children, allocator, parent)).?;
}
fn optional_zon_struct_slice_to_optional_tag_slice(zon_tags_optional: ?[]zon_struct, allocator: std.mem.Allocator, parent: *top_tag) !?[]tag {
if (zon_tags_optional) |zon_tags| {
var gen_tags = try allocator.alloc(tag, zon_tags.len);
for (zon_tags, 0..) |zon_tag, i| {
gen_tags[i] = tag{
.children = try optional_zon_struct_slice_to_optional_tag_slice(zon_tag.children, allocator, parent),
.parent = parent,
.name = zon_tag.name,
};
}
return gen_tags;
}
return null;
}
pub fn deallocate_top_tag(allocated_tag: *top_tag) void {
deallocate_tag(allocated_tag.tags);
std.zon.parse.free(allocated_tag.allocator, allocated_tag.zon);
allocated_tag.path.close();
}
fn deallocate_tag(to_deallocate: ?[]tag) void {
if (to_deallocate) |children| {
for (children) |child| {
deallocate_tag(child.children);
}
children[0].parent.allocator.free(children);
}
}
const images = struct {
pub const image = struct {
path: []const u8,
name: []const u8,
};
paths: []image,
allocator: std.mem.Allocator,
pub fn deinit(self: images) void {
self.allocator.free(self.paths);
}
};
/// returns the path to the images tagged with the given tag
/// the resoult needs to be deallocated with deinit
pub fn get_images(needed_tag: tag) !images {
const allocator = needed_tag.parent.allocator;
if (needed_tag.children) |children| {
var image_arraylist = std.ArrayList(images).empty;
for (children) |child| {
try image_arraylist.append(allocator, try get_images(child));
}
const image_array = try image_arraylist.toOwnedSlice(allocator);
var image_names_arraylist = std.ArrayList(images.image).empty;
for (image_array) |image| {
try image_names_arraylist.appendSlice(allocator, image.paths);
image.deinit();
}
allocator.free(image_array);
return images{
.allocator = allocator,
.paths = try image_names_arraylist.toOwnedSlice(allocator),
};
}
var buffer: [1024]u8 = undefined;
const filename: [:0]u8 = @ptrCast(try std.fmt.allocPrintSentinel(allocator, switch (@import("builtin").os.tag) {
.windows => "{s}\\{s}",
.linux,
.openbsd,
.freebsd,
.dragonfly,
.netbsd,
.macos,
=> "{s}/{s}",
else => return errors.UnsupportedPlatform,
}, .{ try needed_tag.parent.path.realpath(".", &buffer), needed_tag.name }, 0));
const zon_tag = try std.zon.parse.fromSlice(zon_tag_struct, allocator, filename, null, .{});
var paths = try allocator.alloc(images.image, zon_tag.files.len);
for (zon_tag.files, 0..) |file, i| {
paths[i] = images.image{
.name = file.name,
.path = try needed_tag.parent.path.realpath(file.filename, &buffer),
};
}
std.zon.parse.free(allocator, zon_tag);
return images{
.allocator = allocator,
.paths = paths,
};
}