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osc: do inplace decoding of cmdline passed in OSC 133;C (#9127)
This commit is contained in:
Jeffrey C. Ollie
267
src/os/string_encoding.zig
Normal file
267
src/os/string_encoding.zig
Normal file
@@ -0,0 +1,267 @@
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const std = @import("std");
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/// Do an in-place decode of a string that has been encoded in the same way
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/// that `bash`'s `printf %q` encodes a string. This is safe because a string
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/// can only get shorter after decoding. This destructively modifies the buffer
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/// given to it. If an error is returned the buffer may be in an unusable state.
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pub fn printfQDecode(buf: [:0]u8) error{DecodeError}![:0]const u8 {
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const data: [:0]u8 = data: {
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// Strip off `$''` quoting.
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if (std.mem.startsWith(u8, buf, "$'")) {
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if (buf.len < 3 or !std.mem.endsWith(u8, buf, "'")) return error.DecodeError;
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buf[buf.len - 1] = 0;
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break :data buf[2 .. buf.len - 1 :0];
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}
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// Strip off `''` quoting.
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if (std.mem.startsWith(u8, buf, "'")) {
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if (buf.len < 2 or !std.mem.endsWith(u8, buf, "'")) return error.DecodeError;
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buf[buf.len - 1] = 0;
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break :data buf[1 .. buf.len - 1 :0];
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}
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break :data buf;
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};
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var src: usize = 0;
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var dst: usize = 0;
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while (src < data.len) {
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switch (data[src]) {
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else => {
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data[dst] = data[src];
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src += 1;
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dst += 1;
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},
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'\\' => {
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if (src + 1 >= data.len) return error.DecodeError;
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switch (data[src + 1]) {
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' ',
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'\\',
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'"',
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'\'',
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'$',
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=> |c| {
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data[dst] = c;
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src += 2;
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dst += 1;
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},
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'e' => {
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data[dst] = std.ascii.control_code.esc;
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src += 2;
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dst += 1;
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},
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'n' => {
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data[dst] = std.ascii.control_code.lf;
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src += 2;
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dst += 1;
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},
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'r' => {
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data[dst] = std.ascii.control_code.cr;
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src += 2;
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dst += 1;
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},
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't' => {
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data[dst] = std.ascii.control_code.ht;
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src += 2;
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dst += 1;
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},
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'v' => {
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data[dst] = std.ascii.control_code.vt;
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src += 2;
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dst += 1;
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},
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else => return error.DecodeError,
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}
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},
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}
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}
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data[dst] = 0;
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return data[0..dst :0];
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}
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test "printf_q 1" {
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const s: [:0]const u8 = "bobr\\ kurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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const dst = try printfQDecode(&src);
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try std.testing.expectEqualStrings("bobr kurwa", dst);
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}
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test "printf_q 2" {
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const s: [:0]const u8 = "bobr\\nkurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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const dst = try printfQDecode(&src);
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try std.testing.expectEqualStrings("bobr\nkurwa", dst);
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}
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test "printf_q 3" {
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const s: [:0]const u8 = "bobr\\dkurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, printfQDecode(&src));
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}
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test "printf_q 4" {
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const s: [:0]const u8 = "bobr kurwa\\";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, printfQDecode(&src));
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}
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test "printf_q 5" {
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const s: [:0]const u8 = "$'bobr kurwa'";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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const dst = try printfQDecode(&src);
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try std.testing.expectEqualStrings("bobr kurwa", dst);
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}
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test "printf_q 6" {
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const s: [:0]const u8 = "'bobr kurwa'";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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const dst = try printfQDecode(&src);
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try std.testing.expectEqualStrings("bobr kurwa", dst);
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}
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test "printf_q 7" {
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const s: [:0]const u8 = "$'bobr kurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, printfQDecode(&src));
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}
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test "printf_q 8" {
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const s: [:0]const u8 = "$'";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, printfQDecode(&src));
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}
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test "printf_q 9" {
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const s: [:0]const u8 = "'bobr kurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, printfQDecode(&src));
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}
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test "printf_q 10" {
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const s: [:0]const u8 = "'";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, printfQDecode(&src));
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}
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/// Do an in-place decode of a string that has been URL percent encoded.
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/// This is safe because a string can only get shorter after decoding. This
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/// destructively modifies the buffer given to it. If an error is returned the
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/// buffer may be in an unusable state.
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pub fn urlPercentDecode(buf: [:0]u8) error{DecodeError}![:0]const u8 {
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var src: usize = 0;
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var dst: usize = 0;
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while (src < buf.len) {
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switch (buf[src]) {
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else => {
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buf[dst] = buf[src];
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src += 1;
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dst += 1;
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},
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'%' => {
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if (src + 2 >= buf.len) return error.DecodeError;
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switch (buf[src + 1]) {
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'0'...'9', 'a'...'f', 'A'...'F' => {
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switch (buf[src + 2]) {
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'0'...'9', 'a'...'f', 'A'...'F' => {
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buf[dst] = std.math.shl(u8, hex(buf[src + 1]), 4) | hex(buf[src + 2]);
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src += 3;
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dst += 1;
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},
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else => return error.DecodeError,
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}
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},
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else => return error.DecodeError,
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}
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},
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}
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}
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buf[dst] = 0;
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return buf[0..dst :0];
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}
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inline fn hex(c: u8) u4 {
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switch (c) {
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'0'...'9' => return @truncate(c - '0'),
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'a'...'f' => return @truncate(c - 'a' + 10),
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'A'...'F' => return @truncate(c - 'A' + 10),
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else => unreachable,
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}
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}
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test "singles percent" {
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for (0..255) |c| {
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var buf_: [4]u8 = undefined;
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const buf = try std.fmt.bufPrintZ(&buf_, "%{x:0>2}", .{c});
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const decoded = try urlPercentDecode(buf);
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try std.testing.expectEqual(1, decoded.len);
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try std.testing.expectEqual(c, decoded[0]);
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}
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for (0..255) |c| {
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var buf_: [4]u8 = undefined;
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const buf = try std.fmt.bufPrintZ(&buf_, "%{X:0>2}", .{c});
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const decoded = try urlPercentDecode(buf);
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try std.testing.expectEqual(1, decoded.len);
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try std.testing.expectEqual(c, decoded[0]);
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}
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}
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test "percent 1" {
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const s: [:0]const u8 = "bobr%20kurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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const dst = try urlPercentDecode(&src);
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try std.testing.expectEqualStrings("bobr kurwa", dst);
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}
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test "percent 2" {
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const s: [:0]const u8 = "bobr%2kurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, urlPercentDecode(&src));
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}
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test "percent 3" {
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const s: [:0]const u8 = "bobr%kurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, urlPercentDecode(&src));
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}
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test "percent 4" {
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const s: [:0]const u8 = "bobr%%kurwa";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, urlPercentDecode(&src));
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}
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test "percent 5" {
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const s: [:0]const u8 = "bobr%20kurwa%20";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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const dst = try urlPercentDecode(&src);
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try std.testing.expectEqualStrings("bobr kurwa ", dst);
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}
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test "percent 6" {
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const s: [:0]const u8 = "bobr%20kurwa%2";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, urlPercentDecode(&src));
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}
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test "percent 7" {
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const s: [:0]const u8 = "bobr%20kurwa%";
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var src: [s.len:0]u8 = undefined;
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@memcpy(&src, s);
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try std.testing.expectError(error.DecodeError, urlPercentDecode(&src));
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}
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@@ -15,6 +15,7 @@ const LibEnum = @import("../lib/enum.zig").Enum;
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const RGB = @import("color.zig").RGB;
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const kitty_color = @import("kitty/color.zig");
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const osc_color = @import("osc/color.zig");
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const string_encoding = @import("../os/string_encoding.zig");
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pub const color = osc_color;
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const log = std.log.scoped(.osc);
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@@ -89,12 +90,7 @@ pub const Command = union(Key) {
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end_of_input: struct {
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/// The command line that the user entered.
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/// See: https://sw.kovidgoyal.net/kitty/shell-integration/#notes-for-shell-developers
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cmdline: ?union(enum) {
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/// The command line has been encoded with bash's 'printf "%q"'.
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printf_q_encoded: [:0]const u8,
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/// The command line has been encoded with URL percent encoding.
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percent_encoded: [:0]const u8,
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} = null,
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cmdline: ?[:0]const u8 = null,
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},
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/// End of current command.
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@@ -1482,17 +1478,13 @@ pub const Parser = struct {
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} else if (mem.eql(u8, self.temp_state.key, "cmdline")) {
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// https://sw.kovidgoyal.net/kitty/shell-integration/#notes-for-shell-developers
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switch (self.command) {
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.end_of_input => |*v| v.cmdline = .{
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.printf_q_encoded = value,
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},
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.end_of_input => |*v| v.cmdline = string_encoding.printfQDecode(value) catch null,
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else => {},
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}
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} else if (mem.eql(u8, self.temp_state.key, "cmdline_url")) {
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// https://sw.kovidgoyal.net/kitty/shell-integration/#notes-for-shell-developers
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switch (self.command) {
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.end_of_input => |*v| v.cmdline = .{
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.percent_encoded = value,
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},
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.end_of_input => |*v| v.cmdline = string_encoding.urlPercentDecode(value) catch null,
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else => {},
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}
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} else if (mem.eql(u8, self.temp_state.key, "redraw")) {
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@@ -3063,7 +3055,7 @@ test "OSC 133: end_of_input" {
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try testing.expect(cmd == .end_of_input);
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}
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test "OSC 133: end_of_input with cmdline" {
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test "OSC 133: end_of_input with cmdline 1" {
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const testing = std.testing;
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var p: Parser = .init();
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@@ -3074,11 +3066,132 @@ test "OSC 133: end_of_input with cmdline" {
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline != null);
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try testing.expect(cmd.end_of_input.cmdline.? == .printf_q_encoded);
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try testing.expectEqualStrings("echo bobr kurwa", cmd.end_of_input.cmdline.?.printf_q_encoded);
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try testing.expectEqualStrings("echo bobr kurwa", cmd.end_of_input.cmdline.?);
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}
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test "OSC 133: end_of_input with cmdline_url" {
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test "OSC 133: end_of_input with cmdline 2" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline=echo bobr\\ kurwa";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline != null);
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try testing.expectEqualStrings("echo bobr kurwa", cmd.end_of_input.cmdline.?);
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}
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test "OSC 133: end_of_input with cmdline 3" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline=echo bobr\\nkurwa";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline != null);
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try testing.expectEqualStrings("echo bobr\nkurwa", cmd.end_of_input.cmdline.?);
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}
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test "OSC 133: end_of_input with cmdline 4" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline=$'echo bobr kurwa'";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline != null);
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try testing.expectEqualStrings("echo bobr kurwa", cmd.end_of_input.cmdline.?);
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}
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test "OSC 133: end_of_input with cmdline 5" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline='echo bobr kurwa'";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline != null);
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try testing.expectEqualStrings("echo bobr kurwa", cmd.end_of_input.cmdline.?);
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}
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test "OSC 133: end_of_input with cmdline 6" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline='echo bobr kurwa";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline == null);
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}
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test "OSC 133: end_of_input with cmdline 7" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline=$'echo bobr kurwa";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline == null);
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}
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test "OSC 133: end_of_input with cmdline 8" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline=$'";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline == null);
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}
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test "OSC 133: end_of_input with cmdline 9" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline=$'";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
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try testing.expect(cmd == .end_of_input);
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try testing.expect(cmd.end_of_input.cmdline == null);
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}
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test "OSC 133: end_of_input with cmdline 10" {
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const testing = std.testing;
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var p: Parser = .init();
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const input = "133;C;cmdline=";
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for (input) |ch| p.next(ch);
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const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline != null);
|
||||
try testing.expectEqualStrings("", cmd.end_of_input.cmdline.?);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 1" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
@@ -3089,8 +3202,114 @@ test "OSC 133: end_of_input with cmdline_url" {
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline != null);
|
||||
try testing.expect(cmd.end_of_input.cmdline.? == .percent_encoded);
|
||||
try testing.expectEqualStrings("echo bobr kurwa", cmd.end_of_input.cmdline.?.percent_encoded);
|
||||
try testing.expectEqualStrings("echo bobr kurwa", cmd.end_of_input.cmdline.?);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 2" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
|
||||
const input = "133;C;cmdline_url=echo bobr%20kurwa";
|
||||
for (input) |ch| p.next(ch);
|
||||
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline != null);
|
||||
try testing.expectEqualStrings("echo bobr kurwa", cmd.end_of_input.cmdline.?);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 3" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
|
||||
const input = "133;C;cmdline_url=echo bobr%3bkurwa";
|
||||
for (input) |ch| p.next(ch);
|
||||
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline != null);
|
||||
try testing.expectEqualStrings("echo bobr;kurwa", cmd.end_of_input.cmdline.?);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 4" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
|
||||
const input = "133;C;cmdline_url=echo bobr%3kurwa";
|
||||
for (input) |ch| p.next(ch);
|
||||
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline == null);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 5" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
|
||||
const input = "133;C;cmdline_url=echo bobr%kurwa";
|
||||
for (input) |ch| p.next(ch);
|
||||
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline == null);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 6" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
|
||||
const input = "133;C;cmdline_url=echo bobr%kurwa";
|
||||
for (input) |ch| p.next(ch);
|
||||
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline == null);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 7" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
|
||||
const input = "133;C;cmdline_url=echo bobr kurwa%20";
|
||||
for (input) |ch| p.next(ch);
|
||||
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline != null);
|
||||
try testing.expectEqualStrings("echo bobr kurwa ", cmd.end_of_input.cmdline.?);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 8" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
|
||||
const input = "133;C;cmdline_url=echo bobr kurwa%2";
|
||||
for (input) |ch| p.next(ch);
|
||||
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline == null);
|
||||
}
|
||||
|
||||
test "OSC 133: end_of_input with cmdline_url 9" {
|
||||
const testing = std.testing;
|
||||
|
||||
var p: Parser = .init();
|
||||
|
||||
const input = "133;C;cmdline_url=echo bobr kurwa%2";
|
||||
for (input) |ch| p.next(ch);
|
||||
|
||||
const cmd = p.end(null).?.*;
|
||||
try testing.expect(cmd == .end_of_input);
|
||||
try testing.expect(cmd.end_of_input.cmdline == null);
|
||||
}
|
||||
|
||||
test "OSC: OSC 777 show desktop notification with title" {
|
||||
|
||||
Reference in New Issue
Block a user