Book list
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9d74bab6ae
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31
db.c
31
db.c
@ -30,21 +30,44 @@
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enum stmt {
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STMT_BOOK,
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STMT_BOOKS,
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STMT__MAX
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};
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static const char *const stmts[STMT__MAX] = {
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/* STMT_BOOK */
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"SELECT books.id AS id,title FROM books WHERE books.id = ?",
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/* STMT_BOOKS */
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"SELECT books.id AS id,title FROM books LIMIT ?",
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};
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int
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db_books_load(struct kreq *r, struct book **books, int limit)
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{
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if (limit < 0) {
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return 0;
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}
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struct ksqlstmt *stmt;
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int i = 0;
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ksql_stmt_alloc(r->arg, &stmt,
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stmts[STMT_BOOKS],
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STMT_BOOKS);
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ksql_bind_int(stmt, 0, limit);
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while (KSQL_ROW == ksql_stmt_step(stmt)) {
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books[i] = kcalloc(1, sizeof(struct book));
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books[i]->id = ksql_stmt_int(stmt, 0);
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books[i]->title = kstrdup(ksql_stmt_str(stmt, 1));
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i++;
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}
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ksql_stmt_free(stmt);
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return i;
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}
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struct book *
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db_book_load(struct kreq *r, int64_t id)
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{
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struct ksqlstmt *stmt;
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struct book *book;
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int i = 0;
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ksql_stmt_alloc(r->arg, &stmt,
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stmts[STMT_BOOK],
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STMT_BOOK);
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@ -54,8 +77,8 @@ db_book_load(struct kreq *r, int64_t id)
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return(NULL);
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}
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book = kcalloc(1, sizeof(struct book));
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book->id = ksql_stmt_int(stmt, i++);
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book->title = kstrdup(ksql_stmt_str(stmt, i++));
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book->id = ksql_stmt_int(stmt, 0);
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book->title = kstrdup(ksql_stmt_str(stmt, 1));
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ksql_stmt_free(stmt);
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return book;
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}
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1
extern.h
1
extern.h
@ -28,6 +28,7 @@ struct book {
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__BEGIN_DECLS
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struct book * db_book_load(struct kreq *r, int64_t id);
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int db_books_load(struct kreq *r, struct book **books, int limit);
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void db_close(struct kreq *);
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int db_open(struct kreq *, const char *);
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45
main.c
45
main.c
@ -86,6 +86,23 @@ http_open(struct kreq *r, enum khttp code)
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khttp_body(r);
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}
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void
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puterror(struct kjsonreq *req, char *message)
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{
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kjson_obj_open(req);
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kjson_putstringp(req, "msg", message);
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kjson_obj_close(req);
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}
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void
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putbook(struct kjsonreq *req, struct book *b)
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{
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kjson_obj_open(req);
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kjson_putintp(req, "id", b->id);
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kjson_putstringp(req, "title", b->title);
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kjson_obj_close(req);
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}
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static void
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sendbooks(struct kreq *r)
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{
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@ -93,6 +110,7 @@ sendbooks(struct kreq *r)
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const char *errid;
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int64_t id = -1;
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struct book *b = NULL;
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int res, i = 0;
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if (NULL != r->fieldmap[KEY_ID])
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id = r->fieldmap[KEY_ID]->parsed.i;
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@ -103,24 +121,19 @@ sendbooks(struct kreq *r)
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}
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http_open(r, (id > 0 && NULL == b) ? KHTTP_404 : KHTTP_200);
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kjson_open(&req, r);
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kjson_obj_open(&req);
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if (NULL == b) {
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kjson_objp_open(&req, "error");
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kjson_putstringp(&req, "msg", "Unknown book");
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kjson_obj_close(&req);
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if (id >0 && NULL == b) {
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puterror(&req, "Unknown book");
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} else if (NULL != b) {
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putbook(&req, b);
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} else {
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kjson_objp_open(&req, "book");
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kjson_putstringp(&req, "data", "books");
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kjson_putintp(&req, "id", b->id);
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kjson_putstringp(&req, "title", b->title);
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kjson_obj_close(&req);
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kjson_array_open(&req);
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struct book **books = kcalloc(10, sizeof(struct book));
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res = db_books_load(r, books, 10);
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while (i < res) {
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putbook(&req, books[i++]);
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}
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kjson_array_close(&req);
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}
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#ifdef __DEBUG__
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kjson_putstringp(&req, "_path", r->path);
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kjson_putstringp(&req, "_pname", r->pname);
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kjson_putstringp(&req, "_pagename", r->pagename);
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#endif
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kjson_obj_close(&req);
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kjson_close(&req);
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}
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