pkg/oniguruma: basic build

pkg/oniguruma/build.zig

@@ -0,0 +1,130 @@
+const std = @import("std");
+const NativeTargetInfo = std.zig.system.NativeTargetInfo;
+
+pub fn build(b: *std.Build) !void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    _ = b.addModule("oniguruma", .{ .source_file = .{ .path = "main.zig" } });
+
+    const upstream = b.dependency("oniguruma", .{});
+    const lib = try buildOniguruma(b, upstream, target, optimize);
+    b.installArtifact(lib);
+
+    {
+        const test_exe = b.addTest(.{
+            .name = "test",
+            .root_source_file = .{ .path = "main.zig" },
+            .target = target,
+            .optimize = optimize,
+        });
+        test_exe.linkLibrary(lib);
+        const tests_run = b.addRunArtifact(test_exe);
+        const test_step = b.step("test", "Run tests");
+        test_step.dependOn(&tests_run.step);
+
+        // Uncomment this if we're debugging tests
+        // b.installArtifact(test_exe);
+    }
+}
+
+fn buildOniguruma(
+    b: *std.Build,
+    upstream: *std.Build.Dependency,
+    target: std.zig.CrossTarget,
+    optimize: std.builtin.OptimizeMode,
+) !*std.Build.Step.Compile {
+    const lib = b.addStaticLibrary(.{
+        .name = "oniguruma",
+        .target = target,
+        .optimize = optimize,
+    });
+    const t = lib.target_info.target;
+    lib.linkLibC();
+    lib.addIncludePath(upstream.path("src"));
+
+    lib.addConfigHeader(b.addConfigHeader(.{
+        .style = .{ .cmake = upstream.path("src/config.h.cmake.in") },
+    }, .{
+        .PACKAGE = "oniguruma",
+        .PACKAGE_VERSION = "6.9.9",
+        .VERSION = "6.9.9",
+        .HAVE_STDINT_H = true,
+        .HAVE_SYS_TIMES_H = true,
+        .HAVE_SYS_TIME_H = true,
+        .HAVE_SYS_TYPES_H = true,
+        .HAVE_UNISTD_H = true,
+        .HAVE_INTTYPES_H = true,
+        .SIZEOF_INT = t.c_type_byte_size(.int),
+        .SIZEOF_LONG = t.c_type_byte_size(.long),
+        .SIZEOF_LONG_LONG = t.c_type_byte_size(.longlong),
+        .SIZEOF_VOIDP = t.ptrBitWidth() / t.c_type_bit_size(.char),
+    }));
+
+    var flags = std.ArrayList([]const u8).init(b.allocator);
+    defer flags.deinit();
+    try flags.appendSlice(&.{});
+    lib.addCSourceFiles(.{
+        .dependency = upstream,
+        .flags = flags.items,
+        .files = &.{
+            "src/regerror.c",
+            "src/regparse.c",
+            "src/regext.c",
+            "src/regcomp.c",
+            "src/regexec.c",
+            "src/reggnu.c",
+            "src/regenc.c",
+            "src/regsyntax.c",
+            "src/regtrav.c",
+            "src/regversion.c",
+            "src/st.c",
+            "src/onig_init.c",
+            "src/unicode.c",
+            "src/ascii.c",
+            "src/utf8.c",
+            "src/utf16_be.c",
+            "src/utf16_le.c",
+            "src/utf32_be.c",
+            "src/utf32_le.c",
+            "src/euc_jp.c",
+            "src/sjis.c",
+            "src/iso8859_1.c",
+            "src/iso8859_2.c",
+            "src/iso8859_3.c",
+            "src/iso8859_4.c",
+            "src/iso8859_5.c",
+            "src/iso8859_6.c",
+            "src/iso8859_7.c",
+            "src/iso8859_8.c",
+            "src/iso8859_9.c",
+            "src/iso8859_10.c",
+            "src/iso8859_11.c",
+            "src/iso8859_13.c",
+            "src/iso8859_14.c",
+            "src/iso8859_15.c",
+            "src/iso8859_16.c",
+            "src/euc_tw.c",
+            "src/euc_kr.c",
+            "src/big5.c",
+            "src/gb18030.c",
+            "src/koi8_r.c",
+            "src/cp1251.c",
+            "src/euc_jp_prop.c",
+            "src/sjis_prop.c",
+            "src/unicode_unfold_key.c",
+            "src/unicode_fold1_key.c",
+            "src/unicode_fold2_key.c",
+            "src/unicode_fold3_key.c",
+        },
+    });
+
+    lib.installHeadersDirectoryOptions(.{
+        .source_dir = upstream.path("src"),
+        .install_dir = .header,
+        .install_subdir = "",
+        .include_extensions = &.{".h"},
+    });
+
+    return lib;
+}

pkg/oniguruma/build.zig.zon

@@ -0,0 +1,11 @@
+.{
+    .name = "oniguruma",
+    .version = "6.9.9",
+    .paths = .{""},
+    .dependencies = .{
+        .oniguruma = .{
+            .url = "https://github.com/kkos/oniguruma/archive/refs/tags/v6.9.9.tar.gz",
+            .hash = "1220c15e72eadd0d9085a8af134904d9a0f5dfcbed5f606ad60edc60ebeccd9706bb",
+        },
+    },
+}

pkg/oniguruma/c.zig

@@ -0,0 +1,3 @@
+pub usingnamespace @cImport({
+    @cInclude("oniguruma.h");
+});

pkg/oniguruma/encoding.zig

@@ -0,0 +1,5 @@
+const c = @import("c.zig");
+
+pub const Encoding = opaque {
+    pub const utf8: *Encoding = @ptrCast(c.ONIG_ENCODING_UTF8);
+};

pkg/oniguruma/errors.zig

@@ -0,0 +1,19 @@
+const c = @import("c.zig");
+
+/// Maximum error message length.
+pub const MAX_ERROR_LEN = c.ONIG_MAX_ERROR_MESSAGE_LEN;
+
+/// Convert an Oniguruma error to an error.
+pub fn convertError(code: c_int) !void {
+    switch (code) {
+        c.ONIG_NORMAL => {},
+        else => return error.OnigurumaError,
+    }
+}
+
+/// Convert an error code to a string. buf must be at least
+/// MAX_ERROR_LEN bytes long.
+pub fn errorString(buf: []u8, code: c_int) ![]u8 {
+    const len = c.onig_error_code_to_str(buf.ptr, code);
+    return buf[0..@intCast(len)];
+}

pkg/oniguruma/init.zig

@@ -0,0 +1,12 @@
+const c = @import("c.zig");
+const Encoding = @import("encoding.zig").Encoding;
+const errors = @import("errors.zig");
+
+/// Call once per process to initialize Oniguruma. This should be given
+/// the encodings that the program will use.
+pub fn init(encs: []const *Encoding) !void {
+    try errors.convertError(c.onig_initialize(
+        @constCast(@ptrCast(@alignCast(encs.ptr))),
+        @intCast(encs.len),
+    ));
+}

pkg/oniguruma/main.zig

@@ -0,0 +1,8 @@
+pub usingnamespace @import("init.zig");
+pub usingnamespace @import("errors.zig");
+pub const c = @import("c.zig");
+pub const Encoding = @import("encoding.zig").Encoding;
+
+test {
+    @import("std").testing.refAllDecls(@This());
+}

pkg/oniguruma/testing.zig

@@ -0,0 +1,14 @@
+const init = @import("init.zig");
+
+var initialized: bool = false;
+
+/// Call this function before any other tests in this package to ensure that
+/// the oni library is initialized. This should only be used for tests
+/// and only when you're sure this is the ONLY way that oni is being
+/// initialized.
+///
+/// This always only initializes the encodings the tests use.
+pub fn ensureInit() !void {
+    if (initialized) return;
+    try init.init();
+}