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// SPDX-License-Identifier: MIT
// Copyright (c) 2015-2021 Zig Contributors
// This file is part of [zig](https://ziglang.org/), which is MIT licensed.
// The MIT license requires this copyright notice to be included in all copies
// and substantial portions of the software.
const std = @import("../std.zig");
const build = std.build;
const Step = build.Step;
const Builder = build.Builder;
const fs = std.fs;
const mem = std.mem;
const warn = std.debug.warn;
pub const CheckFileStep = struct {
step: Step,
builder: *Builder,
expected_matches: []const []const u8,
source: build.FileSource,
max_bytes: usize = 20 * 1024 * 1024,
pub fn create(
builder: *Builder,
source: build.FileSource,
expected_matches: []const []const u8,
) *CheckFileStep {
const self = builder.allocator.create(CheckFileStep) catch unreachable;
self.* = CheckFileStep{
.builder = builder,
.step = Step.init(.CheckFile, "CheckFile", builder.allocator, make),
.source = source,
.expected_matches = expected_matches,
};
self.source.addStepDependencies(&self.step);
return self;
}
fn make(step: *Step) !void {
const self = @fieldParentPtr(CheckFileStep, "step", step);
const src_path = self.source.getPath(self.builder);
const contents = try fs.cwd().readFileAlloc(self.builder.allocator, src_path, self.max_bytes);
for (self.expected_matches) |expected_match| {
if (mem.indexOf(u8, contents, expected_match) == null) {
warn(
\\
\\========= Expected to find: ===================
\\{s}
\\========= But file does not contain it: =======
\\{s}
\\
, .{ expected_match, contents });
return error.TestFailed;
}
}
}
};
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