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const std = @import("../std.zig");
const Step = std.Build.Step;
const fs = std.fs;
const mem = std.mem;
const CheckFileStep = @This();
pub const base_id = .check_file;
step: Step,
builder: *std.Build,
expected_matches: []const []const u8,
source: std.Build.FileSource,
max_bytes: usize = 20 * 1024 * 1024,
pub fn create(
builder: *std.Build,
source: std.Build.FileSource,
expected_matches: []const []const u8,
) *CheckFileStep {
const self = builder.allocator.create(CheckFileStep) catch @panic("OOM");
self.* = CheckFileStep{
.builder = builder,
.step = Step.init(builder.allocator, .{
.id = .check_file,
.name = "CheckFile",
.makeFn = make,
}),
.source = source.dupe(builder),
.expected_matches = builder.dupeStrings(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) {
std.debug.print(
\\
\\========= Expected to find: ===================
\\{s}
\\========= But file does not contain it: =======
\\{s}
\\
, .{ expected_match, contents });
return error.TestFailed;
}
}
}
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