src/intl/test/utf8-step-test.c

   1 #ifdef HAVE_CONFIG_H
   2 #include "config.h"
   3 #endif
   4
   5 #include <stdarg.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 #include "elinks.h"
  11
  12 #include "intl/charsets.h"
  13 #include "util/test.h"
  14
  15 enum direction {
  16         DIRECTION_FORWARD,
  17         DIRECTION_BACKWARD
  18 };
  19
  20 static enum direction
  21 parse_direction(const char *name)
  22 {
  23         if (strcmp(name, "forward") == 0)
  24                 return DIRECTION_FORWARD;
  25         else if (strcmp(name, "backward") == 0)
  26                 return DIRECTION_BACKWARD;
  27         else
  28                 die("direction must be forward or backward, not %s\n", name);
  29 }
  30
  31 static enum utf8_step
  32 parse_way(const char *name)
  33 {
  34         if (strcmp(name, "characters") == 0)
  35                 return UTF8_STEP_CHARACTERS;
  36         else if (strcmp(name, "cells-fewer") == 0)
  37                 return UTF8_STEP_CELLS_FEWER;
  38         else if (strcmp(name, "cells-more") == 0)
  39                 return UTF8_STEP_CELLS_MORE;
  40         else
  41                 die("way must be characters, cells-fewer, or cells-more; not %s\n", name);
  42 }
  43
  44 int
  45 main(int argc, char **argv)
  46 {
  47         enum direction direction;
  48         enum utf8_step way;
  49         int max_steps;
  50         unsigned char *begin, *end;
  51         int expect_bytes;
  52         int expect_steps;
  53         int bytes;
  54         int steps;
  55
  56         if (argc != 7)
  57                 die("usage: %s (forward|backward) (characters|cells-fewer|cells-more) \\\n"
  58                     "\tMAX-STEPS STRING EXPECT-BYTES EXPECT-STEPS\n",
  59                     argc ? argv[0] : "utf8-step-test");
  60
  61         direction = parse_direction(argv[1]);
  62         way = parse_way(argv[2]);
  63         max_steps = atoi(argv[3]);
  64         begin = argv[4];
  65         end = begin + strlen(begin);
  66         expect_bytes = atoi(argv[5]);
  67         expect_steps = atoi(argv[6]);
  68
  69         switch (direction) {
  70         case DIRECTION_FORWARD:
  71                 bytes = utf8_step_forward(begin, end, max_steps, way, &steps) - begin;
  72                 break;
  73         case DIRECTION_BACKWARD:
  74                 bytes = end - utf8_step_backward(end, begin, max_steps, way, &steps);
  75                 break;
  76         default:
  77                 abort();
  78         }
  79
  80         if (bytes != expect_bytes || steps != expect_steps)
  81                 die("FAIL: bytes=%d (expected %d); steps=%d (expected %d)\n",
  82                     bytes, expect_bytes, steps, expect_steps);
  83
  84         return 0;
  85 }