WIP

gaiji.c

@@ -21,6 +21,8 @@
 #include <stdlib.h>
 #include <assert.h>
 
+#include "jansson/include/jansson.h"
+
 #include "util.h"
 #include "gaiji.h"
 
@@ -117,6 +119,67 @@ static void encode_sequence(char output[], int size, const char utf8[]) {
     strncat(output, "}", size);
 }
 
+static void parse_entry(Gaiji_Entry* entry, const json_t* entry_json) {
+    entry->code = json_integer_value(json_array_get(entry_json, 0));
+    const char* utf8 = json_string_value(json_array_get(entry_json, 1));
+    if (utf8 == NULL) {
+        *entry->utf8 = 0;
+    }
+    else {
+        strncpy(entry->utf8, utf8, ARRSIZE(entry->utf8));
+		entry->utf8[ARRSIZE(entry->utf8) - 1] = 0;
+    }
+}
+
+static void parse_entries(Gaiji_Entry** entries, int* count, const json_t* entry_array_json) {
+    *count = json_array_size(entry_array_json);
+    if (*count == 0) {
+        *entries = NULL;
+    }
+    else {
+        *entries = malloc(sizeof(Gaiji_Entry) * *count);
+        for (int i = 0; i < *count; ++i) {
+            parse_entry(*entries + i, json_array_get(entry_array_json, i));
+        }
+    }
+}
+
+static void parse_table(Gaiji_Table* table, const json_t* table_json) {
+    const char* name = json_string_value(json_object_get(table_json, "name"));
+    if (name == NULL) {
+        *table->name = 0;
+    }
+    else {
+        strncpy(table->name, name, ARRSIZE(table->name));
+        table->name[ARRSIZE(table->name) - 1] = 0;
+    }
+
+    parse_entries(
+        (Gaiji_Entry**)&table->table_wide,
+        &table->count_wide,
+        json_object_get(table_json, "wide")
+    );
+
+    parse_entries(
+        (Gaiji_Entry**)&table->table_narrow,
+        &table->count_narrow,
+        json_object_get(table_json, "narrow")
+    );
+}
+
+static void parse_table_array(Gaiji_Context* context, const json_t* table_array_json) {
+    context->count = json_array_size(table_array_json);
+    if (context->count == 0) {
+        context->tables = NULL;
+    }
+    else {
+        context->tables = malloc(sizeof(Gaiji_Table) * context->count);
+        for (int i = 0; i < context->count; ++i) {
+            parse_table(context->tables + i, json_array_get(table_array_json, i));
+        }
+    }
+}
+
 /*
  * Exported functions
  */
@@ -210,13 +273,25 @@ void gaiji_stub_decode(char output[], int size, const char input[]) {
 }
 
 bool gaiji_context_init(Gaiji_Context* context, const char path[]) {
-    (void)path;
+    json_t* table_array_json = json_load_file(path, 0, NULL);
+    if (table_array_json == NULL) {
         context->count = 0;
         context->tables = NULL;
+        return false;
+    }
+
+    parse_table_array(context, table_array_json);
+    json_decref(table_array_json);
     return true;
 }
 
 void gaiji_context_destroy(Gaiji_Context* context) {
+    for (int i = 0; i < context->count; ++i) {
+        Gaiji_Table* table = context->tables + i;
+        free((Gaiji_Entry*)table->table_wide);
+        free((Gaiji_Entry*)table->table_narrow);
+    }
+
     free(context->tables);
     context->tables = NULL;
     context->count = 0;

gaiji.h

@@ -25,9 +25,8 @@
  * Constants
  */
 
-#define MAX_UTF8_BYTES 9
+#define MAX_UTF8_BYTES 10
 #define MAX_STUB_BYTES 32
-#define MAX_TABLE_NAME 256
 
 /*
  * Types
@@ -39,7 +38,7 @@ typedef struct {
 } Gaiji_Entry;
 
 typedef struct {
-    char               name[MAX_TABLE_NAME];
+    char               name[256];
     const Gaiji_Entry* table_wide;
     int                count_wide;
     const Gaiji_Entry* table_narrow;