src/test/test-ellipsize.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <stdio.h>
   4
   5 #include "alloc-util.h"
   6 #include "def.h"
   7 #include "string-util.h"
   8 #include "strv.h"
   9 #include "terminal-util.h"
  10 #include "util.h"
  11 #include "utf8.h"
  12
  13 static void test_ellipsize_mem_one(const char *s, size_t old_length, size_t new_length) {
  14         _cleanup_free_ char *n = NULL;
  15         _cleanup_free_ char *t1 = NULL, *t2 = NULL, *t3 = NULL;
  16         char buf[LINE_MAX];
  17         bool has_wide_chars;
  18         size_t max_width;
  19
  20         n = memdup_suffix0(s, old_length);
  21
  22         if (!utf8_is_valid(n))
  23                 /* We don't support invalid sequences… */
  24                 return;
  25
  26         /* Report out inputs. We duplicate the data so that cellescape
  27          * can properly report truncated multibyte sequences. */
  28         log_info("%s \"%s\" old_length=%zu/%zu new_length=%zu", __func__,
  29                  cellescape(buf, sizeof buf, n),
  30                  old_length, utf8_console_width(n),
  31                  new_length);
  32
  33         /* To keep this test simple, any case with wide chars starts with this glyph */
  34         has_wide_chars = startswith(s, "你");
  35         max_width = MIN(utf8_console_width(n), new_length);
  36
  37         t1 = ellipsize_mem(n, old_length, new_length, 30);
  38         log_info("30%% → %s utf8_console_width=%zu", t1, utf8_console_width(t1));
  39         if (!has_wide_chars)
  40                 assert_se(utf8_console_width(t1) == max_width);
  41         else
  42                 assert_se(utf8_console_width(t1) <= max_width);
  43
  44         t2 = ellipsize_mem(n, old_length, new_length, 90);
  45         log_info("90%% → %s utf8_console_width=%zu", t2, utf8_console_width(t2));
  46         if (!has_wide_chars)
  47                 assert_se(utf8_console_width(t2) == max_width);
  48         else
  49                 assert_se(utf8_console_width(t2) <= max_width);
  50
  51         t3 = ellipsize_mem(n, old_length, new_length, 100);
  52         log_info("100%% → %s utf8_console_width=%zu", t3, utf8_console_width(t3));
  53         if (!has_wide_chars)
  54                 assert_se(utf8_console_width(t3) == max_width);
  55         else
  56                 assert_se(utf8_console_width(t3) <= max_width);
  57
  58         if (new_length >= old_length) {
  59                 assert_se(streq(t1, n));
  60                 assert_se(streq(t2, n));
  61                 assert_se(streq(t3, n));
  62         }
  63 }
  64
  65 static void test_ellipsize_mem(void) {
  66         const char *s;
  67         ssize_t l, k;
  68
  69         FOREACH_STRING(s,
  70                        "_XXXXXXXXXXX_", /* ASCII */
  71                        "_aąęółśćńżźć_", /* two-byte utf-8 */
  72                        "გამარჯობა",     /* multi-byte utf-8 */
  73                        "你好世界",       /* wide characters */
  74                        "你გą世óoó界")    /* a mix */
  75
  76                 for (l = strlen(s); l >= 0; l--)
  77                         for (k = strlen(s) + 1; k >= 0; k--)
  78                                 test_ellipsize_mem_one(s, l, k);
  79 }
  80
  81 static void test_ellipsize_one(const char *p) {
  82         _cleanup_free_ char *t;
  83         t = ellipsize(p, columns(), 70);
  84         puts(t);
  85         free(t);
  86         t = ellipsize(p, columns(), 0);
  87         puts(t);
  88         free(t);
  89         t = ellipsize(p, columns(), 100);
  90         puts(t);
  91         free(t);
  92         t = ellipsize(p, 0, 50);
  93         puts(t);
  94         free(t);
  95         t = ellipsize(p, 1, 50);
  96         puts(t);
  97         free(t);
  98         t = ellipsize(p, 2, 50);
  99         puts(t);
 100         free(t);
 101         t = ellipsize(p, 3, 50);
 102         puts(t);
 103         free(t);
 104         t = ellipsize(p, 4, 50);
 105         puts(t);
 106         free(t);
 107         t = ellipsize(p, 5, 50);
 108         puts(t);
 109 }
 110
 111 static void test_ellipsize(void) {
 112         test_ellipsize_one(DIGITS LETTERS DIGITS LETTERS);
 113         test_ellipsize_one("한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어한국어");
 114         test_ellipsize_one("-日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国日本国");
 115         test_ellipsize_one("中国中国中国中国中国中国中国中国中国中国中国中国中国中国中国中国中国中国中国中国中国中国-中国中国中国中国中国中国中国中国中国中国中国中国中国");
 116         test_ellipsize_one("sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd sÿstëmd");
 117         test_ellipsize_one("🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮🐮");
 118         test_ellipsize_one("Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.");
 119         test_ellipsize_one("shórt");
 120 }
 121
 122 int main(int argc, char *argv[]) {
 123         test_ellipsize_mem();
 124         test_ellipsize();
 125
 126         return 0;
 127 }