Begin new plugin system refactor, removing hooks

src/text_editor/fuzzy_search_view.cpp

@@ -0,0 +1,135 @@
+String16 FetchFuzzyViewLoadLine(View *view) {
+    Buffer *buffer = GetBuffer(view->active_buffer);
+    Range range = view->carets[0].range;
+    String16 string = GetString(buffer, range);
+    if (GetSize(range) == 0) {
+        Int line = PosToLine(buffer, range.min);
+        if (line == 0) {
+            line = ClampTop(1ll, buffer->line_starts.len - 1ll);
+        }
+        string = GetLineStringWithoutNL(buffer, line);
+
+        Int idx = 0;
+        String16 delim = u"||>";
+        if (Seek(string, delim, &idx, SeekFlag_None)) {
+            string = Skip(string, idx + delim.len);
+        }
+    }
+    return string;
+}
+
+void OpenCommand(BSet active) {
+    String16 string = FetchFuzzyViewLoadLine(active.view);
+    Open(string);
+}
+
+float NewFuzzyRate(String16 s, String16 p) {
+    float score = 0;
+    // try to do this: https://github.com/junegunn/fzf/blob/master/src/algo/algo.go
+    return score;
+}
+
+float FuzzyRate(String16 s, String16 p) {
+    float score = 0;
+    for (Int outer_pi = 0; outer_pi < p.len; outer_pi += 1) {
+        String16 pit = Skip(p, outer_pi);
+        if (IsWhitespace(At(pit, 0))) {
+            continue;
+        }
+
+        float matching = 0;
+        for (Int outer_si = 0; outer_si < s.len; outer_si += 1) {
+            String16 sit = Skip(s, outer_si);
+            if (IsWhitespace(At(sit, 0))) {
+                continue;
+            }
+
+            Int si = 0;
+            Int pi = 0;
+            for (;si < sit.len && pi < pit.len;) {
+                while (si < sit.len && IsWhitespace(sit[si])) si += 1;
+                while (pi < pit.len && IsWhitespace(pit[pi])) pi += 1;
+                if (pi >= pit.len) break;
+                if (si >= sit.len) break;
+
+                if (ToLowerCase(sit[si]) == ToLowerCase(pit[pi])) {
+                    matching += 1.0f;
+                } else {
+                    break;
+                }
+                si += 1;
+                pi += 1;
+            }
+        }
+        score += matching;
+    }
+    score = score / (float)s.len;
+    return score;
+}
+
+inline bool MergeSortCompare(FuzzyPair *a, FuzzyPair *b) {
+    bool result = a->rating > b->rating;
+    return result;
+}
+
+Array<FuzzyPair> FuzzySearchLines(Allocator allocator, Buffer *buffer, Int line_min, Int line_max, String16 needle) {
+    ProfileFunction();
+    if (line_min < 0 || line_min >= buffer->line_starts.len) return {};
+    if (line_max < 0 || line_min > buffer->line_starts.len) return {};
+    Array<FuzzyPair> ratings = {allocator};
+    Reserve(&ratings, line_max - line_min + 4);
+    for (Int i = line_min; i < line_max; i += 1) {
+        String16 s = GetLineStringWithoutNL(buffer, i);
+
+        Int idx = 0;
+        if (Seek(s, u"||>", &idx, SeekFlag_None)) {
+            s = GetPrefix(s, idx);
+        } else if (Seek(s, u"<||", &idx, SeekFlag_None)) {
+            s = GetPrefix(s, idx);
+        }
+        s = Trim(s);
+
+        float rating = FuzzyRate(s, needle);
+        Add(&ratings, {(int32_t)i, rating});
+    }
+    Array<FuzzyPair> temp = Copy(allocator, ratings);
+    MergeSort(ratings.len, ratings.data, temp.data);
+    return ratings;
+}
+
+void UpdateFuzzySearchView() {
+    Scratch scratch;
+    BSet active = GetBSet(ActiveWindowID);
+    String16 line_string = GetLineStringWithoutNL(active.buffer, 0);
+    uint64_t hash = HashBytes(line_string.data, line_string.len * sizeof(char16_t));
+    if (active.view->prev_search_line_hash != hash) {
+        active.view->prev_search_line_hash = hash;
+        Array<FuzzyPair> ratings = FuzzySearchLines(scratch, active.buffer, 1, active.buffer->line_starts.len, line_string);
+
+        Buffer *scratch_buff = CreateScratchBuffer(scratch, active.buffer->cap);
+        RawAppend(scratch_buff, line_string);
+        For(IterateInReverse(&ratings)) {
+            String16 s = GetLineStringWithoutNL(active.buffer, it.index);
+            if (s.len == 0) continue;
+            RawAppend(scratch_buff, u"\n");
+            RawAppend(scratch_buff, s);
+        }
+
+        Caret caret = active.view->carets[0];
+        SaveCaretHistoryBeforeBeginEdit(active.buffer, active.view->carets);
+        SelectEntireBuffer(active.view);
+        Replace(active.view, GetString(scratch_buff));
+        active.view->carets[0] = caret;
+    }
+}
+
+void SetFuzzy(View *view) {
+    AddCommand(&view->hooks, "Open", "ctrl-q | enter | f12", [](HookParam){
+        BSet active = GetBSet(ActiveWindowID);
+        BSet main = GetBSet(PrimaryWindowID);
+        NextActiveWindowID = main.window->id;
+        String16 string = FetchFuzzyViewLoadLine(active.view);
+        Open(string);
+    });
+    view->update_hook = UpdateFuzzySearchView;
+}