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mime: parse charset and boundary from content-type

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This commit is contained in:
Pierre Tachoire
2024-01-16 11:46:14 +01:00
parent 69bbd62edf
commit 01a894b7d0
1 changed files with 34 additions and 6 deletions
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40
src/browser/mime.zig
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@@ -12,10 +12,13 @@ const MimeError = error{
mtype: []const u8,
msubtype: []const u8,
params: []const u8,
params: []const u8 = "",
pub const HTML = Self{ .mtype = "text", .msubtype = "html", .params = "" };
pub const Javascript = Self{ .mtype = "application", .msubtype = "javascript", .params = "" };
charset: ?[]const u8 = null,
boundary: ?[]const u8 = null,
pub const HTML = Self{ .mtype = "text", .msubtype = "html" };
pub const Javascript = Self{ .mtype = "application", .msubtype = "javascript" };
const reader = struct {
s: []const u8,
@@ -128,7 +131,7 @@ pub fn parse(s: []const u8) Self.MimeError!Self {
// limit input size
if (ln > 255) return MimeError.TooBig;
var res = Self{ .mtype = "", .msubtype = "", .params = "" };
var res = Self{ .mtype = "", .msubtype = "" };
var r = reader{ .s = s };
res.mtype = trim(r.until('/'));
@@ -144,6 +147,24 @@ pub fn parse(s: []const u8) Self.MimeError!Self {
res.params = trim(r.tail());
if (res.params.len == 0) return MimeError.Invalid;
// parse well known parameters.
// don't check invalid parameter format.
var rp = reader{ .s = res.params };
while (true) {
const name = trim(rp.until('='));
if (!rp.skip()) return res;
const value = trim(rp.until(';'));
if (std.ascii.eqlIgnoreCase(name, "charset")) {
res.charset = value;
}
if (std.ascii.eqlIgnoreCase(name, "boundary")) {
res.boundary = value;
}
if (!rp.skip()) return res;
}
return res;
}
@@ -163,10 +184,17 @@ test "parse valid" {
try testing.expectEqualStrings("text", m2.mtype);
try testing.expectEqualStrings("javascript1.5", m2.msubtype);
const m3 = try Self.parse("text/html; charset=UTF-8");
const m3 = try Self.parse("text/html; charset=utf-8");
try testing.expectEqualStrings("text", m3.mtype);
try testing.expectEqualStrings("html", m3.msubtype);
try testing.expectEqualStrings("charset=UTF-8", m3.params);
try testing.expectEqualStrings("charset=utf-8", m3.params);
try testing.expectEqualStrings("utf-8", m3.charset.?);
const m4 = try Self.parse("text/html; boundary=----");
try testing.expectEqualStrings("text", m4.mtype);
try testing.expectEqualStrings("html", m4.msubtype);
try testing.expectEqualStrings("boundary=----", m4.params);
try testing.expectEqualStrings("----", m4.boundary.?);
}
test "parse invalid" {