引入全新dict格式

dict.c

@@ -0,0 +1,50 @@
+#include <stdio.h>
+#include <sys/stat.h>
+#include "dict.h"
+
+static FILE *fp = NULL;
+static int lock = 0;
+static char* filepath;
+
+uint32_t last_nonnull(char* p, uint32_t max_size) {
+    if(max_size > 1) while(!p[max_size - 1]) max_size--;
+    return max_size;
+}
+
+int init_dict(char* file_path) {
+    fp = fopen(file_path, "rb+");
+    if(fp) {
+        lock = LOCK_UN;
+        filepath = file_path;
+        return 1;
+    } else {
+        puts("Open dict error");
+        return 0;
+    }
+}
+
+FILE *open_dict(int lock_type) {
+    if(lock & LOCK_EX) return NULL;
+    else {
+        if(!fp) fp = fopen(filepath, "rb+");
+        if(fp) {
+            lock = lock_type;
+            rewind(fp);
+            return fp;
+        } else {
+            puts("Open dict error");
+            return NULL;
+        }
+    }
+}
+
+void close_dict() {
+    puts("Close dict");
+    lock = LOCK_UN;
+}
+
+off_t get_dict_size() {
+    struct stat statbuf;
+    if(stat(filepath, &statbuf)==0) return statbuf.st_size;
+    else return -1;
+}