--- /dev/null
+/*
+
+Test program demonstrating a problem in Windows 15048's ReadConsoleOutput API.
+
+To compile:
+
+ cl /nologo /EHsc winbug-15048.cc shell32.lib
+
+Example of regressed input:
+
+Case 1:
+
+ > chcp 932
+ > winbug-15048 -face-gothic 3044
+
+ Correct output:
+
+ 1**34 (nb: U+3044 replaced with '**' to avoid MSVC encoding warning)
+ 5678
+
+ ReadConsoleOutputW (both rows, 3 cols)
+ row 0: U+0031(0007) U+3044(0107) U+3044(0207) U+0033(0007)
+ row 1: U+0035(0007) U+0036(0007) U+0037(0007) U+0038(0007)
+
+ ReadConsoleOutputW (both rows, 4 cols)
+ row 0: U+0031(0007) U+3044(0107) U+3044(0207) U+0033(0007) U+0034(0007)
+ row 1: U+0035(0007) U+0036(0007) U+0037(0007) U+0038(0007) U+0020(0007)
+
+ ReadConsoleOutputW (second row)
+ row 1: U+0035(0007) U+0036(0007) U+0037(0007) U+0038(0007) U+0020(0007)
+
+ ...
+
+ Win10 15048 bad output:
+
+ 1**34
+ 5678
+
+ ReadConsoleOutputW (both rows, 3 cols)
+ row 0: U+0031(0007) U+3044(0007) U+0033(0007) U+0035(0007)
+ row 1: U+0036(0007) U+0037(0007) U+0038(0007) U+0000(0000)
+
+ ReadConsoleOutputW (both rows, 4 cols)
+ row 0: U+0031(0007) U+3044(0007) U+0033(0007) U+0034(0007) U+0035(0007)
+ row 1: U+0036(0007) U+0037(0007) U+0038(0007) U+0020(0007) U+0000(0000)
+
+ ReadConsoleOutputW (second row)
+ row 1: U+0035(0007) U+0036(0007) U+0037(0007) U+0038(0007) U+0020(0007)
+
+ ...
+
+ The U+3044 character (HIRAGANA LETTER I) occupies two columns, but it only
+ fills one record in the ReadConsoleOutput output buffer, which has the
+ effect of shifting the first cell of the second row into the last cell of
+ the first row. Ordinarily, the first and second cells would also have the
+ COMMON_LVB_LEADING_BYTE and COMMON_LVB_TRAILING_BYTE attributes set, which
+ allows winpty to detect the double-column character.
+
+Case 2:
+
+ > chcp 437
+ > winbug-15048 -face "Lucida Console" -h 4 221A
+
+ The same issue happens with U+221A (SQUARE ROOT), but only in certain
+ fonts. The console seems to think this character occupies two columns
+ if the font is sufficiently small. The Windows console properties dialog
+ doesn't allow fonts below 5 pt, but winpty tries to use 2pt and 4pt Lucida
+ Console to allow very large console windows.
+
+Case 3:
+
+ > chcp 437
+ > winbug-15048 -face "Lucida Console" -h 12 FF12
+
+ The console selection system thinks U+FF12 (FULLWIDTH DIGIT TWO) occupies
+ two columns, which happens to be correct, but it's displayed as a single
+ column unrecognized character. It otherwise behaves the same as the other
+ cases.
+
+*/
+
+#include <windows.h>
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <wchar.h>
+
+#include <string>
+
+#define COUNT_OF(array) (sizeof(array) / sizeof((array)[0]))
+
+// See https://en.wikipedia.org/wiki/List_of_CJK_fonts
+const wchar_t kMSGothic[] = { 0xff2d, 0xff33, 0x0020, 0x30b4, 0x30b7, 0x30c3, 0x30af, 0 }; // Japanese
+const wchar_t kNSimSun[] = { 0x65b0, 0x5b8b, 0x4f53, 0 }; // Simplified Chinese
+const wchar_t kMingLight[] = { 0x7d30, 0x660e, 0x9ad4, 0 }; // Traditional Chinese
+const wchar_t kGulimChe[] = { 0xad74, 0xb9bc, 0xccb4, 0 }; // Korean
+
+static void set_font(const wchar_t *name, int size) {
+ const HANDLE conout = GetStdHandle(STD_OUTPUT_HANDLE);
+ CONSOLE_FONT_INFOEX fontex {};
+ fontex.cbSize = sizeof(fontex);
+ fontex.dwFontSize.Y = size;
+ fontex.FontWeight = 400;
+ fontex.FontFamily = 0x36;
+ wcsncpy(fontex.FaceName, name, COUNT_OF(fontex.FaceName));
+ assert(SetCurrentConsoleFontEx(conout, FALSE, &fontex));
+}
+
+static void usage(const wchar_t *prog) {
+ printf("Usage: %ls [options]\n", prog);
+ printf(" -h HEIGHT\n");
+ printf(" -face FACENAME\n");
+ printf(" -face-{gothic|simsun|minglight|gulimche) [JP,CN-sim,CN-tra,KR]\n");
+ printf(" hhhh -- print U+hhhh\n");
+ exit(1);
+}
+
+static void dump_region(SMALL_RECT region, const char *name) {
+ const HANDLE conout = GetStdHandle(STD_OUTPUT_HANDLE);
+
+ CHAR_INFO buf[1000];
+ memset(buf, 0xcc, sizeof(buf));
+
+ const int w = region.Right - region.Left + 1;
+ const int h = region.Bottom - region.Top + 1;
+
+ assert(ReadConsoleOutputW(
+ conout, buf, { (short)w, (short)h }, { 0, 0 },
+ ®ion));
+
+ printf("\n");
+ printf("ReadConsoleOutputW (%s)\n", name);
+ for (int y = 0; y < h; ++y) {
+ printf("row %d: ", region.Top + y);
+ for (int i = 0; i < region.Left * 13; ++i) {
+ printf(" ");
+ }
+ for (int x = 0; x < w; ++x) {
+ const int i = y * w + x;
+ printf("U+%04x(%04x) ", buf[i].Char.UnicodeChar, buf[i].Attributes);
+ }
+ printf("\n");
+ }
+}
+
+int main() {
+ wchar_t *cmdline = GetCommandLineW();
+ int argc = 0;
+ wchar_t **argv = CommandLineToArgvW(cmdline, &argc);
+ const wchar_t *font_name = L"Lucida Console";
+ int font_height = 8;
+ int test_ch = 0xff12; // U+FF12 FULLWIDTH DIGIT TWO
+
+ for (int i = 1; i < argc; ++i) {
+ const std::wstring arg = argv[i];
+ const std::wstring next = i + 1 < argc ? argv[i + 1] : L"";
+ if (arg == L"-face" && i + 1 < argc) {
+ font_name = argv[i + 1];
+ i++;
+ } else if (arg == L"-face-gothic") {
+ font_name = kMSGothic;
+ } else if (arg == L"-face-simsun") {
+ font_name = kNSimSun;
+ } else if (arg == L"-face-minglight") {
+ font_name = kMingLight;
+ } else if (arg == L"-face-gulimche") {
+ font_name = kGulimChe;
+ } else if (arg == L"-h" && i + 1 < argc) {
+ font_height = _wtoi(next.c_str());
+ i++;
+ } else if (arg.c_str()[0] != '-') {
+ test_ch = wcstol(arg.c_str(), NULL, 16);
+ } else {
+ printf("Unrecognized argument: %ls\n", arg.c_str());
+ usage(argv[0]);
+ }
+ }
+
+ const HANDLE conout = GetStdHandle(STD_OUTPUT_HANDLE);
+
+ set_font(font_name, font_height);
+
+ system("cls");
+ DWORD actual = 0;
+ wchar_t output[] = L"1234\n5678\n";
+ output[1] = test_ch;
+ WriteConsoleW(conout, output, 10, &actual, nullptr);
+
+ dump_region({ 0, 0, 3, 1 }, "both rows, 3 cols");
+ dump_region({ 0, 0, 4, 1 }, "both rows, 4 cols");
+ dump_region({ 0, 1, 4, 1 }, "second row");
+ dump_region({ 0, 0, 4, 0 }, "first row");
+ dump_region({ 1, 0, 4, 0 }, "first row, skip 1");
+ dump_region({ 2, 0, 4, 0 }, "first row, skip 2");
+ dump_region({ 3, 0, 4, 0 }, "first row, skip 3");
+
+ set_font(font_name, 14);
+
+ return 0;
+}
projects / VSoRC / .git / blobdiff