fcbb7426fa
See #770 To help automatically translate code, see the zig-fmt-pointer-reform-2 branch. This will convert all & into *. Due to the syntax ambiguity (which is why we are making this change), even address-of & will turn into *, so you'll have to manually fix thes instances. You will be guaranteed to get compile errors for them - expected 'type', found 'foo'
56 lines
1.5 KiB
Zig
56 lines
1.5 KiB
Zig
// Introspection and determination of system libraries needed by zig.
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const std = @import("std");
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const mem = std.mem;
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const os = std.os;
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const warn = std.debug.warn;
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/// Caller must free result
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pub fn testZigInstallPrefix(allocator: *mem.Allocator, test_path: []const u8) ![]u8 {
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const test_zig_dir = try os.path.join(allocator, test_path, "lib", "zig");
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errdefer allocator.free(test_zig_dir);
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const test_index_file = try os.path.join(allocator, test_zig_dir, "std", "index.zig");
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defer allocator.free(test_index_file);
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var file = try os.File.openRead(allocator, test_index_file);
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file.close();
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return test_zig_dir;
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}
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/// Caller must free result
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pub fn findZigLibDir(allocator: *mem.Allocator) ![]u8 {
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const self_exe_path = try os.selfExeDirPath(allocator);
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defer allocator.free(self_exe_path);
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var cur_path: []const u8 = self_exe_path;
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while (true) {
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const test_dir = os.path.dirname(cur_path);
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if (mem.eql(u8, test_dir, cur_path)) {
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break;
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}
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return testZigInstallPrefix(allocator, test_dir) catch |err| {
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cur_path = test_dir;
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continue;
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};
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}
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return error.FileNotFound;
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}
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pub fn resolveZigLibDir(allocator: *mem.Allocator) ![]u8 {
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return findZigLibDir(allocator) catch |err| {
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warn(
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\\Unable to find zig lib directory: {}.
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\\Reinstall Zig or use --zig-install-prefix.
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\\
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, @errorName(err));
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return error.ZigLibDirNotFound;
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};
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}
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