Json export

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "eb"]
 	path = eb
 	url = https://github.com/FooSoft/eb.git
+[submodule "jansson"]
+	path = jansson
+	url = https://github.com/akheron/jansson.git

.ycm_extra_conf.py

@@ -5,6 +5,7 @@ def FlagsForFile(filename, **kwargs):
         '-Werror',
         '-std=gnu11',
         '-I/mnt/projects/zero-epwing/eb',
+        '-I/mnt/projects/zero-epwing/jansson/include',
         '-x',
         'c',
     ]

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.5)
 project(zero-epwing)
 include_directories(eb)
-link_directories(eb/eb/.libs)
+link_directories(eb/eb/.libs jansson/lib)
 add_executable(zero-epwing main.c util.c convert.c)
-target_link_libraries(zero-epwing libeb.a libz.a)
+target_link_libraries(zero-epwing libeb.a libz.a libjansson.a)

jansson

@@ -0,0 +1 @@
+Subproject commit bc5741fb1ac730ead24e9bd08977fc6c248e04b0

main.c

@@ -119,6 +119,9 @@ static void export_book(const char path[], Book* book) {
                 case EB_CHARCODE_JISX0208_GB2312:
                     strcpy(book->character_code, "jisx0208/gb2312");
                     break;
+                default:
+                    strcpy(book->character_code, "invalid");
+                    break;
             }
         }
 
@@ -131,6 +134,9 @@ static void export_book(const char path[], Book* book) {
                 case EB_DISC_EPWING:
                     strcpy(book->disc_code, "epwing");
                     break;
+                default:
+                    strcpy(book->disc_code, "invalid");
+                    break;
             }
         }
 
@@ -161,13 +167,14 @@ static void export_book(const char path[], Book* book) {
 
 int main(int argc, char *argv[]) {
     if (argc != 2) {
-        fprintf(stderr, "usage: %s path\n", argv[0]);
+        fprintf(stderr, "usage: %s dictionary_path\n", argv[0]);
         return 2;
     }
-
-    Book book = {};
-    export_book(argv[1], &book);
-    free_book(&book);
-
-    return 1;
+    else {
+        Book book = {};
+        export_book(argv[1], &book);
+        dump_book(&book, stdout);
+        free_book(&book);
+        return 1;
+    }
 }

util.c

@@ -17,6 +17,7 @@
  */
 
 #include <stdbool.h>
+#include <string.h>
 #include <stdio.h>
 
 #include "util.h"
@@ -26,6 +27,8 @@
 #include "eb/eb/error.h"
 #include "eb/eb/text.h"
 
+#include "jansson/include/jansson.h"
+
 #define MAX_TEXT 1024
 
 char* read_book_data(EB_Book* book, const EB_Position* position, ReadMode mode) {
@@ -82,3 +85,66 @@ void free_book(Book* book) {
         free(subbook->entries);
     }
 }
+
+static void encode_entry(Entry* entry, json_t* entry_json) {
+    json_object_set_new(entry_json, "heading", json_string(entry->heading));
+    json_object_set_new(entry_json, "text", json_string(entry->text));
+}
+
+static void encode_subbook(Subbook* subbook, json_t* subbook_json) {
+    if (subbook->title != NULL) {
+        json_object_set_new(subbook_json, "title", json_string(subbook->title));
+    }
+
+    if (subbook->copyright != NULL) {
+        json_object_set_new(subbook_json, "copyright", json_string(subbook->copyright));
+    }
+
+    if (strlen(subbook->error) > 0) {
+        json_object_set_new(subbook_json, "error", json_string(subbook->error));
+    }
+
+    json_t* entry_json_array = json_array();
+    for (int i = 0; i < subbook->entry_count; ++i) {
+        json_t* entry_json = json_object();
+        encode_entry(subbook->entries + i, entry_json);
+        json_array_append(entry_json_array, entry_json);
+        json_decref(entry_json);
+    }
+
+    json_object_set(subbook_json, "entries", entry_json_array);
+    json_decref(entry_json_array);
+}
+
+static void encode_book(Book* book, json_t* book_json) {
+    json_object_set_new(book_json, "characterCode", json_string(book->character_code));
+    json_object_set_new(book_json, "discCode", json_string(book->disc_code));
+
+    if (strlen(book->error) > 0) {
+        json_object_set_new(book_json, "error", json_string(book->error));
+    }
+
+    json_t* subbook_json_array = json_array();
+    for (int i = 0; i < book->subbook_count; ++i) {
+        json_t* subbook_json = json_object();
+        encode_subbook(book->subbooks + i, subbook_json);
+        json_array_append(subbook_json_array, subbook_json);
+        json_decref(subbook_json);
+    }
+
+    json_object_set(book_json, "subbooks", subbook_json_array);
+    json_decref(subbook_json_array);
+}
+
+void dump_book(Book* book, FILE* fp) {
+    json_t* book_json = json_object();
+    encode_book(book, book_json);
+
+    char* output = json_dumps(book_json, JSON_COMPACT);
+    if (output != NULL) {
+        fputs(output, fp);
+    }
+    free(output);
+
+    json_decref(book_json);
+}

util.h

@@ -20,6 +20,7 @@
 #define UTIL_H
 
 #include <stdlib.h>
+#include <stdio.h>
 #include "eb/eb/eb.h"
 
 /*
@@ -74,6 +75,9 @@ typedef enum {
 } ReadMode;
 
 char* read_book_data(EB_Book* book, const EB_Position* position, ReadMode mode);
-void  free_book(Book* book);
+
+void free_book(Book* book);
+void dump_book(Book* book, FILE* fp);
+
 
 #endif