src/libsystemd-terminal/test-unifont.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
   6
   7   systemd is free software; you can redistribute it and/or modify it
   8   under the terms of the GNU Lesser General Public License as published by
   9   the Free Software Foundation; either version 2.1 of the License, or
  10   (at your option) any later version.
  11
  12   systemd is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   Lesser General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  19 ***/
  20
  21 /*
  22  * Test Unifont Helper
  23  * This tries opening the binary unifont glyph-array and renders some glyphs.
  24  * The glyphs are then compared to hard-coded glyphs.
  25  */
  26
  27 #include <errno.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include "macro.h"
  32 #include "unifont-def.h"
  33 #include "unifont-internal.h"
  34 #include "util.h"
  35
  36 static void render(char *w, const unifont_glyph *g) {
  37         unsigned int i, j;
  38         const uint8_t *d = g->data;
  39
  40         for (j = 0; j < 16; ++j) {
  41                 for (i = 0; i < 8 * g->cwidth; ++i) {
  42                         if (d[i / 8] & (1 << (7 - i % 8)))
  43                                 *w++ = '#';
  44                         else
  45                                 *w++ = ' ';
  46                 }
  47                 *w++ = '\n';
  48                 d += g->stride;
  49         }
  50
  51         *w++ = 0;
  52 }
  53
  54 static void test_unifont(void) {
  55         char buf[4096];
  56         unifont_glyph g;
  57         unifont *u;
  58
  59         assert_se(unifont_new(&u) >= 0);
  60
  61         /* lookup invalid font */
  62         assert_se(unifont_lookup(u, &g, 0xffffffffU) < 0);
  63
  64         /* lookup and render 'A' */
  65         assert_se(unifont_lookup(u, &g, 'A') >= 0);
  66         assert_se(g.width == 8);
  67         assert_se(g.height == 16);
  68         assert_se(g.stride >= 1);
  69         assert_se(g.cwidth == 1);
  70         assert_se(g.data != NULL);
  71         render(buf, &g);
  72         assert_se(!strcmp(buf,
  73                           "        \n"
  74                           "        \n"
  75                           "        \n"
  76                           "        \n"
  77                           "   ##   \n"
  78                           "  #  #  \n"
  79                           "  #  #  \n"
  80                           " #    # \n"
  81                           " #    # \n"
  82                           " ###### \n"
  83                           " #    # \n"
  84                           " #    # \n"
  85                           " #    # \n"
  86                           " #    # \n"
  87                           "        \n"
  88                           "        \n"
  89                           ));
  90
  91         /* lookup and render '什' */
  92         assert_se(unifont_lookup(u, &g, 0x4ec0) >= 0);
  93         assert_se(g.width == 16);
  94         assert_se(g.height == 16);
  95         assert_se(g.stride >= 2);
  96         assert_se(g.cwidth == 2);
  97         assert_se(g.data != NULL);
  98         render(buf, &g);
  99         assert_se(!strcmp(buf,
 100                           "    #     #     \n"
 101                           "    #     #     \n"
 102                           "    #     #     \n"
 103                           "   #      #     \n"
 104                           "   #      #     \n"
 105                           "  ##      #     \n"
 106                           "  ## ########## \n"
 107                           " # #      #     \n"
 108                           "#  #      #     \n"
 109                           "   #      #     \n"
 110                           "   #      #     \n"
 111                           "   #      #     \n"
 112                           "   #      #     \n"
 113                           "   #      #     \n"
 114                           "   #      #     \n"
 115                           "   #      #     \n"
 116                           ));
 117
 118         unifont_unref(u);
 119 }
 120
 121 int main(int argc, char **argv) {
 122         if (access(UNIFONT_PATH, F_OK))
 123                 return 77;
 124
 125         test_unifont();
 126
 127         return 0;
 128 }