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zero-epwing/util.c

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/*
* Copyright (C) 2016 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
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#include <stdbool.h>
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#include <string.h>
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#include <stdio.h>
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#include "util.h"
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#include "convert.h"
#include "eb/eb/eb.h"
#include "eb/eb/error.h"
#include "eb/eb/text.h"
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#include "jansson/include/jansson.h"
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/*
* Local functions
*/
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));
}
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));
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);
}
/*
* Exported functions
*/
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char* read_book_data(EB_Book* book, EB_Hookset* hookset, Gaiji_Context* context, const EB_Position* position, Read_Mode mode) {
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if (eb_seek_text(book, position) != EB_SUCCESS) {
return NULL;
}
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char data[1024];
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ssize_t data_length = 0;
EB_Error_Code error;
switch (mode) {
case READ_MODE_TEXT:
error = eb_read_text(
book,
NULL,
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hookset,
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context,
ARRSIZE(data) - 1,
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data,
&data_length
);
break;
case READ_MODE_HEADING:
error = eb_read_heading(
book,
NULL,
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hookset,
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context,
ARRSIZE(data) - 1,
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data,
&data_length
);
break;
default:
return NULL;
}
return error == EB_SUCCESS ? eucjp_to_utf8(data) : NULL;
}
void free_book(Book* book) {
for (int i = 0; i < book->subbook_count; ++i) {
Subbook* subbook = book->subbooks + i;
free(subbook->title);
free(subbook->copyright);
for (int j = 0; j < subbook->entry_count; ++j) {
Entry* entry = subbook->entries + j;
free(entry->heading);
free(entry->text);
}
free(subbook->entries);
}
}
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void dump_book(Book* book, bool pretty_print, FILE* fp) {
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json_t* book_json = json_object();
encode_book(book, book_json);
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char* output = json_dumps(book_json, pretty_print ? JSON_INDENT(4) : JSON_COMPACT);
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if (output != NULL) {
fputs(output, fp);
}
free(output);
json_decref(book_json);
}