fa9db31b8c
MODE_DIST (-s) is the same as MODE_DIST_LENVENSHTEIN (-ss) but much slower. Drop it. Make MODE_DIST_MYERS (-sss, faster than MODE_DIST_LENVENSHTEIN) take its place (-s). The original comment was incorrect (-s is not Eugene W. Myer's algorithm). It is correct now. Co-authored-by: eagleoflqj and Maskray
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
#include <math.h>
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#include <rz_diff.h>
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#include "minunit.h"
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#define R(a, b, c, d) \
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{ (const ut8 *)a, (const ut8 *)b, (int)c, (int)d }
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static struct {
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const ut8 *a;
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const ut8 *b;
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int di_distance;
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int dis_distance;
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} tests[] = {
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R("", "zzz", 3, 3),
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R("meow", "", 4, 4),
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R("a", "b", 2, 1),
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R("aaa", "aaa", 0, 0),
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R("aaaaa", "aabaa", 2, 1),
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R("aaaa", "aabaa", 1, 1),
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R("aaba", "babca", 3, 2),
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R("foo", "foobar", 3, 3),
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R("wallaby", "wallet", 5, 3),
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R("identity", "identity", 0, 0),
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{ NULL, NULL, 0, 0 }
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};
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bool test_rz_diff_buffers_distance(void) {
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char msg[128];
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RzDiff *diff = rz_diff_new();
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if (!diff) {
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return false;
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}
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unsigned int distance;
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int i;
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// Levenshtein edit distance (deletion/insertion/substitution)
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diff->type = 'l';
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for (i = 0; tests[i].a; i++) {
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size_t la = strlen((const char *)tests[i].a), lb = strlen((const char *)tests[i].b);
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rz_diff_buffers_distance(diff, tests[i].a, la, tests[i].b, lb, &distance, NULL);
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snprintf(msg, sizeof msg, "levenshtein %s/%s distance", tests[i].a, tests[i].b);
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mu_assert_eq(distance, tests[i].dis_distance, msg);
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}
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// Eugene W. Myers' O(ND) diff algorithm, deletion/insertion edit distance
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diff->type = 'm';
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for (i = 0; tests[i].a; i++) {
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size_t la = strlen((const char *)tests[i].a), lb = strlen((const char *)tests[i].b);
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rz_diff_buffers_distance(diff, tests[i].a, la, tests[i].b, lb, &distance, NULL);
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snprintf(msg, sizeof msg, "myers %s/%s distance", tests[i].a, tests[i].b);
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mu_assert_eq(distance, tests[i].di_distance, msg);
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}
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rz_diff_free(diff);
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mu_end;
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}
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int all_tests() {
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mu_run_test(test_rz_diff_buffers_distance);
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return tests_passed != tests_run;
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}
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mu_main(all_tests)
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