C stubs

build.bat

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+gcc -std=c99 -O3 -c -o _engine.o engine.c
+gcc -shared -o _engine.dll _engine.o
+del _engine.o

engine.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+#define SENTINEL '$'
+#define FAILED 0xffffffff
+
+#define DAWG_MORE(x) (x & 0x80000000)
+#define DAWG_LETTER(x) ((x >> 24) & 0x7f)
+#define DAWG_LINK(x) (x & 0xffffff)
+
+typedef unsigned int DawgRecord;
+
+DawgRecord* dawg;
+
+char* loadFile(char* path) {
+    FILE* file = fopen(path, "rb");
+    fseek(file, 0, SEEK_END);
+    int length = ftell(file);
+    rewind(file);
+    char* buffer = (char*)malloc(length);
+    fread(buffer, 1, length, file);
+    fclose(file);
+    return buffer;
+}
+
+void init(char* dawgPath) {
+    dawg = (DawgRecord*)loadFile(dawgPath);
+}
+
+void uninit() {
+    free(dawg);
+}
+
+int getDawgRecord(DawgRecord* records, int index, char letter) {
+    DawgRecord record;
+    while (1) {
+        record = records[index];
+        if (DAWG_LETTER(record) == letter) {
+            return index;
+        }
+        if (!DAWG_MORE(record)) {
+            return FAILED;
+        }
+        index++;
+    }
+}
+
+int checkDawg(DawgRecord* records, char* letters, int length) {
+    int index = 0;
+    for (int i = 0; i < length; i++) {
+        index = getDawgRecord(records, index, letters[i]);
+        if (index == FAILED) {
+            return 0;
+        }
+        index = DAWG_LINK(records[index]);
+    }
+    return 1;
+}
+
+int main(int argc, char* argv[]) {
+    init("files/twl.dawg");
+    uninit();
+    return 0;
+}

engine.py

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+from ctypes import *
+
+dll = None
+
+def init(dll_path, dawg_path):
+    global dll
+    dll = CDLL(dll_path)
+    dll.init(dawg_path)
+
+def uninit():
+    dll.uninit()