C++ (Cpp) Highlighter_Highlight_Excerpt示例

示例#1

文件： TestHighlighter.c 项目： carriercomm/lucy

static void
test_Highlight_Excerpt(TestBatchRunner *runner, Searcher *searcher, Obj *query) {
    String *content = (String*)SSTR_WRAP_UTF8("content", 7);
    Highlighter *highlighter = Highlighter_new(searcher, query, content, 3);
    String *highlighted;

    Vector *spans = Vec_new(1);
    Vec_Push(spans, (Obj*)Span_new(2, 1, 0.0f));
    String *raw_excerpt = (String *)SSTR_WRAP_UTF8("a b c", 5);
    highlighted = Highlighter_Highlight_Excerpt(highlighter, spans,
                                                raw_excerpt, 0);
    TEST_TRUE(runner,
              Str_Equals_Utf8(highlighted, "a <strong>b</strong> c", 22),
              "basic Highlight_Excerpt");
    DECREF(highlighted);
    DECREF(spans);

    spans = Vec_new(2);
    Vec_Push(spans, (Obj*)Span_new(0, 1, 1.0f));
    Vec_Push(spans, (Obj*)Span_new(10, 10, 1.0f));
    raw_excerpt = (String *)SSTR_WRAP_UTF8(PHI, 2);
    highlighted = Highlighter_Highlight_Excerpt(highlighter, spans,
                                                raw_excerpt, 0);
    TEST_TRUE(runner,
              Str_Equals_Utf8(highlighted, "<strong>&#934;</strong>", 23),
              "don't surround spans off end of raw excerpt.");
    DECREF(highlighted);
    DECREF(spans);

    spans = Vec_new(1);
    Vec_Push(spans, (Obj*)Span_new(3, 1, 1.0f));
    raw_excerpt = (String *)SSTR_WRAP_UTF8(PHI " " PHI " " PHI, 8);
    highlighted = Highlighter_Highlight_Excerpt(highlighter, spans,
                                                raw_excerpt, 1);
    TEST_TRUE(runner,
              Str_Equals_Utf8(highlighted,
                            "&#934; <strong>&#934;</strong> &#934;", 37),
              "Highlight_Excerpt pays attention to offset");
    DECREF(highlighted);
    DECREF(spans);

    spans = Vec_new(4);
    Vec_Push(spans, (Obj*)Span_new(2, 10, 1.0f));
    Vec_Push(spans, (Obj*)Span_new(2,  4, 1.0f));
    Vec_Push(spans, (Obj*)Span_new(8,  9, 1.0f));
    Vec_Push(spans, (Obj*)Span_new(8,  4, 1.0f));
    raw_excerpt = (String *)SSTR_WRAP_UTF8(PHI " Oook. Urk. Ick. " PHI, 21);
    highlighted = Highlighter_Highlight_Excerpt(highlighter, spans,
                                                raw_excerpt, 0);
    TEST_TRUE(runner,
              Str_Equals_Utf8(highlighted,
                            "&#934; <strong>Oook. Urk. Ick.</strong> &#934;",
                            46),
              "Highlight_Excerpt works with overlapping spans");
    DECREF(highlighted);
    DECREF(spans);

    DECREF(highlighter);
}

示例#2

文件： Highlighter.c 项目： hernan604/lucy

String*
Highlighter_Create_Excerpt_IMP(Highlighter *self, HitDoc *hit_doc) {
    HighlighterIVARS *const ivars = Highlighter_IVARS(self);
    String *field_val = (String*)HitDoc_Extract(hit_doc, ivars->field);
    String *retval;

    if (!field_val || !Obj_Is_A((Obj*)field_val, STRING)) {
        retval = NULL;
    }
    else if (!Str_Get_Size(field_val)) {
        // Empty string yields empty string.
        retval = Str_new_from_trusted_utf8("", 0);
    }
    else {
        DocVector *doc_vec
            = Searcher_Fetch_Doc_Vec(ivars->searcher,
                                     HitDoc_Get_Doc_ID(hit_doc));
        VArray *maybe_spans
            = Compiler_Highlight_Spans(ivars->compiler, ivars->searcher,
                                       doc_vec, ivars->field);
        VArray *score_spans = maybe_spans ? maybe_spans : VA_new(0);
        VA_Sort(score_spans, NULL, NULL);
        HeatMap *heat_map
            = HeatMap_new(score_spans, (ivars->excerpt_length * 2) / 3);

        int32_t top;
        String *raw_excerpt
            = Highlighter_Raw_Excerpt(self, field_val, &top, heat_map);
        String *highlighted
            = Highlighter_Highlight_Excerpt(self, score_spans, raw_excerpt,
                                            top);

        DECREF(raw_excerpt);
        DECREF(heat_map);
        DECREF(score_spans);
        DECREF(doc_vec);

        retval = highlighted;
    }

    DECREF(field_val);
    return retval;
}