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const std = @import("std");
pub const parser = @import("parser.zig");
pub const Error = parser.Error;
fn getErrorCode(err: Error) u8 {
return switch (err) {
Error.OutOfMemory => 1,
Error.InvalidUtf8 => 2,
Error.FeatureNotSupported => 3,
Error.ModifierNotClosed => 4,
Error.InvalidTitleContent => 5,
Error.IllegalPlacement => 6,
};
}
/// Returns the static string linked with the error code.
export fn getErrorString(code: u8) [*:0]const u8 {
return switch (code) {
1 => "out of memory",
2 => "invalid UTF-8",
3 => "feature not supported",
4 => "modifier not closed",
5 => "invalid title content",
6 => "illegal placement",
else => unreachable,
};
}
/// Parse the content.
/// Code is a pointer to an u8 populated with an error code > 0.
///
/// Returns a not null strings and set the code to 0 if everything is fine.
/// Else, it returns null and set an error code above 0.
/// Use getErrorString to retrieve the string linked with the error code.
export fn parse(content: [*:0]const u8, code: *u8) ?[*:0]const u8 {
const alloc = std.heap.c_allocator;
const res = parser.parse(alloc, std.mem.span(content)) catch |err| {
code.* = getErrorCode(err);
return null;
};
defer alloc.free(res);
code.* = 0;
return alloc.dupeZ(u8, res) catch |err| {
code.* = getErrorCode(err);
return null;
};
}
test {
std.testing.refAllDeclsRecursive(@This());
}
fn doTest(content: [*:0]const u8, exp: []const u8, exp_code: u8) !void {
const expect = std.testing.expect;
var code: u8 = undefined;
const raw = parse(content, &code) orelse {
expect(code == exp_code) catch |err| {
std.debug.print("{}\n", .{code});
return err;
};
return;
};
const res = std.mem.span(raw);
defer std.heap.c_allocator.free(res);
expect(code == 0) catch |err| {
std.debug.print("{}\n", .{code});
return err;
};
expect(std.mem.eql(u8, exp, res)) catch |err| {
std.debug.print("{s}\n", .{res});
return err;
};
}
test "exported parse" {
// valid
try doTest("hello world", "<p>hello world</p>", 0);
try doTest("he*ll*o world", "<p>he<b>ll</b>o world</p>", 0);
try doTest("# title", "<h1>title</h1>", 0);
// invalid
try doTest("he*llo world", "", getErrorCode(Error.ModifierNotClosed));
try doTest("# title :::", "", getErrorCode(Error.InvalidTitleContent));
}
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