--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/zint/backend/tests/test_big5.c	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,238 @@
+/*
+    libzint - the open source barcode library
+    Copyright (C) 2021-2022 Robin Stuart <rstuart114@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+    1. Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+    3. Neither the name of the project nor the names of its contributors
+       may be used to endorse or promote products derived from this software
+       without specific prior written permission.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+    ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+ */
+/* SPDX-License-Identifier: BSD-3-Clause */
+
+#include "testcommon.h"
+#include "test_big5_tab.h"
+/* For local "private" testing using previous libiconv adaptation, not included for licensing reasons */
+#if 0
+#define TEST_JUST_SAY_GNO
+#endif
+#ifdef TEST_JUST_SAY_GNO
+#include "../just_say_gno/big5_gnu.h"
+#endif
+
+INTERNAL int u_big5_test(const unsigned int u, unsigned char *dest);
+
+/* Version of `u_big5()` taking unsigned int destination for backward-compatible testing */
+static int u_big5_int(unsigned int u, unsigned int *d) {
+    unsigned char dest[2];
+    int ret = u_big5_test(u, dest);
+    if (ret) {
+        *d = ret == 1 ? dest[0] : ((dest[0] << 8) | dest[1]);
+    }
+    return ret;
+}
+
+/* As control convert to Big5 using simple table generated from
+   https://www.unicode.org/Public/MAPPINGS/OBSOLETE/EASTASIA/OTHER/BIG5.TXT plus simple processing */
+static int u_big5_int2(unsigned int u, unsigned int *dest) {
+    int tab_length = ARRAY_SIZE(test_big5_tab);
+    int start_i = test_big5_tab_ind[u >> 10];
+    int end_i = start_i + 0x800 > tab_length ? tab_length : start_i + 0x800;
+    int i;
+    if (u < 0x80) {
+        *dest = u;
+        return 1;
+    }
+    for (i = start_i; i < end_i; i += 2) {
+        if (test_big5_tab[i + 1] == u) {
+            *dest = test_big5_tab[i];
+            return *dest > 0xFF ? 2 : 1;
+        }
+    }
+    return 0;
+}
+
+#include <time.h>
+
+#define TEST_PERF_TIME(arg)     (((arg) * 1000.0) / CLOCKS_PER_SEC)
+#define TEST_PERF_RATIO(a1, a2) (a2 ? TEST_PERF_TIME(a1) / TEST_PERF_TIME(a2) : 0)
+
+#ifdef TEST_JUST_SAY_GNO
+#define TEST_INT_PERF_ITERATIONS    100
+#endif
+
+static void test_u_big5_int(const testCtx *const p_ctx) {
+    int debug = p_ctx->debug;
+
+    unsigned int i;
+    int ret, ret2;
+    unsigned int val, val2;
+
+#ifdef TEST_JUST_SAY_GNO
+    int j;
+    clock_t start;
+    clock_t total = 0, total_gno = 0;
+#else
+    (void)debug;
+#endif
+
+    testStart("test_u_big5_int");
+
+#ifdef TEST_JUST_SAY_GNO
+    if ((debug & ZINT_DEBUG_TEST_PERFORMANCE)) { /* -d 256 */
+        printf("test_u_big5_int perf iterations: %d\n", TEST_INT_PERF_ITERATIONS);
+    }
+#endif
+
+    for (i = 0; i < 0xFFFE; i++) {
+        if (i >= 0xD800 && i < 0xE000) { /* UTF-16 surrogates */
+            continue;
+        }
+        if (testContinue(p_ctx, i)) continue;
+        val = val2 = 0;
+        ret = u_big5_int(i, &val);
+        ret2 = u_big5_int2(i, &val2);
+        assert_equal(ret, ret2, "i:%d 0x%04X ret %d != ret2 %d, val 0x%04X, val2 0x%04X\n", (int) i, i, ret, ret2, val, val2);
+        if (ret2) {
+            assert_equal(val, val2, "i:%d 0x%04X val 0x%04X != val2 0x%04X\n", (int) i, i, val, val2);
+        }
+#ifdef TEST_JUST_SAY_GNO
+        if (!(debug & ZINT_DEBUG_TEST_PERFORMANCE)) { /* -d 256 */
+            val2 = 0;
+            ret2 = big5_wctomb_zint(&val2, i);
+        } else {
+            for (j = 0; j < TEST_INT_PERF_ITERATIONS; j++) {
+                val = val2 = 0;
+
+                start = clock();
+                ret = u_big5_int(i, &val);
+                total += clock() - start;
+
+                start = clock();
+                ret2 = big5_wctomb_zint(&val2, i);
+                total_gno += clock() - start;
+            }
+        }
+
+        assert_equal(ret, ret2, "i:%d 0x%04X ret %d != ret2 %d, val 0x%04X, val2 0x%04X\n", (int) i, i, ret, ret2, val, val2);
+        if (ret2) {
+            assert_equal(val, val2, "i:%d 0x%04X val 0x%04X != val2 0x%04X\n", (int) i, i, val, val2);
+        }
+#endif
+    }
+
+#ifdef TEST_JUST_SAY_GNO
+    if ((debug & ZINT_DEBUG_TEST_PERFORMANCE)) { /* -d 256 */
+        printf("test_u_big5_int perf totals: new % 8gms, gno % 8gms ratio %g\n",
+                TEST_PERF_TIME(total), TEST_PERF_TIME(total_gno), TEST_PERF_RATIO(total, total_gno));
+    }
+#endif
+
+    testFinish();
+}
+
+/* Convert UTF-8 string to Big5 and place in array of ints */
+static int big5_utf8(struct zint_symbol *symbol, const unsigned char source[], int *p_length,
+                unsigned int *b5data) {
+    int error_number;
+    unsigned int i, length;
+    unsigned int *utfdata = (unsigned int *) z_alloca(sizeof(unsigned int) * (*p_length + 1));
+
+    error_number = utf8_to_unicode(symbol, source, utfdata, p_length, 0 /*disallow_4byte*/);
+    if (error_number != 0) {
+        return error_number;
+    }
+
+    for (i = 0, length = *p_length; i < length; i++) {
+        if (!u_big5_int(utfdata[i], b5data + i)) {
+            strcpy(symbol->errtxt, "800: Invalid character in input data");
+            return ZINT_ERROR_INVALID_DATA;
+        }
+    }
+
+    return 0;
+}
+
+static void test_big5_utf8(const testCtx *const p_ctx) {
+
+    struct item {
+        char *data;
+        int length;
+        int ret;
+        int ret_length;
+        unsigned int expected_b5data[20];
+        char *comment;
+    };
+    /*
+       ＿ U+FF3F fullwidth low line, not in ISO/Win, in Big5 0xA1C4, UTF-8 EFBCBF
+       ╴ U+2574 drawings box light left, not in ISO/Win, not in original Big5 but in "Big5-2003" as 0xA15A, UTF-8 E295B4
+    */
+    /* s/\/\*[ 0-9]*\*\//\=printf("\/\*%3d*\/", line(".") - line("'<")): */
+    struct item data[] = {
+        /*  0*/ { "＿", -1, 0, 1, { 0xA1C4 }, "" },
+        /*  1*/ { "╴", -1, ZINT_ERROR_INVALID_DATA, -1, {0}, "" },
+    };
+    int data_size = ARRAY_SIZE(data);
+    int i, length, ret;
+
+    struct zint_symbol symbol = {0};
+    unsigned int b5data[20];
+
+    testStart("test_big5_utf8");
+
+    for (i = 0; i < data_size; i++) {
+        int ret_length;
+
+        if (testContinue(p_ctx, i)) continue;
+
+        length = data[i].length == -1 ? (int) strlen(data[i].data) : data[i].length;
+        ret_length = length;
+
+        ret = big5_utf8(&symbol, (unsigned char *) data[i].data, &ret_length, b5data);
+        assert_equal(ret, data[i].ret, "i:%d ret %d != %d (%s)\n", i, ret, data[i].ret, symbol.errtxt);
+        if (ret == 0) {
+            int j;
+            assert_equal(ret_length, data[i].ret_length, "i:%d ret_length %d != %d\n", i, ret_length, data[i].ret_length);
+            for (j = 0; j < ret_length; j++) {
+                assert_equal(b5data[j], data[i].expected_b5data[j], "i:%d b5data[%d] %04X != %04X\n", i, j, b5data[j], data[i].expected_b5data[j]);
+            }
+        }
+    }
+
+    testFinish();
+}
+
+int main(int argc, char *argv[]) {
+
+    testFunction funcs[] = { /* name, func */
+        { "test_u_big5_int", test_u_big5_int },
+        { "test_big5_utf8", test_big5_utf8 },
+    };
+
+    testRun(argc, argv, funcs, ARRAY_SIZE(funcs));
+
+    testReport();
+
+    return 0;
+}
+
+/* vim: set ts=4 sw=4 et : */