From 618c5eaf2b5c4048bb42171e9fc390dba642cbc3 Mon Sep 17 00:00:00 2001
From: nishi <nishi@d4a5a174-5a4a-5b4b-b672-37683c10d7d5>
Date: Sat, 25 May 2024 16:44:23 +0000
Subject: [PATCH] can get fields now

git-svn-id: file:///raid/svn-main/nishi-dataworks/trunk@112 d4a5a174-5a4a-5b4b-b672-37683c10d7d5
---
 Library/database_record.c |  2 +-
 Library/database_table.c  | 53 +++++++++++++++++++++++++++++++++++++++
 Library/dw_database.h     | 20 +++++++++++----
 3 files changed, 69 insertions(+), 6 deletions(-)

diff --git a/Library/database_record.c b/Library/database_record.c
index e629b7e..6ade2f5 100644
--- a/Library/database_record.c
+++ b/Library/database_record.c
@@ -26,4 +26,4 @@
 /* -------------------------------------------------------------------------- */
 /* --- END LICENSE --- */
 
-#include "dw_database.h"
\ No newline at end of file
+#include "dw_database.h"
diff --git a/Library/database_table.c b/Library/database_table.c
index e8f19c6..eb69d4e 100644
--- a/Library/database_table.c
+++ b/Library/database_table.c
@@ -148,3 +148,56 @@ char** dataworks_database_get_table_list(struct dataworks_db* db) {
 		return list;
 	}
 }
+
+char** dataworks_database_get_table_fields(struct dataworks_db* db, const char* table) {
+	if(db->version == 1) {
+		__dw_lockfile(db->fp);
+		fseek(db->fp, 3 + 10, SEEK_SET);
+		int i;
+		struct dataworks_db_v1_indexentry index;
+		char* buf = malloc(1 + 8 + 1 + 256 + 4096);
+		int c = 0;
+		for(i = 0; i < 256; i++) {
+			fread(buf, 1, 1 + 8 + 1 + 256 + 4096, db->fp);
+			__dw_buffer_to_db_v1_indexentry(buf, index);
+			if(index.flag & DATAWORKS_V1_INDEXENTRY_USED) {
+				char* dbname = malloc(index.dbname_len + 1);
+				memcpy(dbname, index.dbname, index.dbname_len);
+				dbname[index.dbname_len] = 0;
+				if(strcmp(dbname, table) == 0) {
+					char** list = malloc(sizeof(*list));
+					list[0] = NULL;
+					int j;
+					int start = 1;
+					for(j = 1;; j++) {
+						if(index.fields[j] == 0) {
+							char* nam = malloc(j - start + 1);
+							nam[start - j] = 0;
+							memcpy(nam, index.fields + start, j - start);
+							int k;
+							for(k = 0; list[k] != NULL; k++)
+								;
+							char** newlist = malloc(sizeof(*newlist) * (k + 2));
+							for(k = 0; list[k] != NULL; k++) newlist[k] = list[k];
+							newlist[k] = nam;
+							newlist[k + 1] = NULL;
+							free(list);
+							list = newlist;
+							j++;
+							start = j + 1;
+							if(index.fields[j] == 0) break;
+						}
+					}
+					free(dbname);
+					free(buf);
+					__dw_unlockfile(db->fp);
+					return list;
+				}
+				free(dbname);
+			}
+		}
+		free(buf);
+		__dw_unlockfile(db->fp);
+	}
+	return NULL;
+}
diff --git a/Library/dw_database.h b/Library/dw_database.h
index b475546..244d01f 100644
--- a/Library/dw_database.h
+++ b/Library/dw_database.h
@@ -140,7 +140,7 @@ enum DW_ERRORS {
 /**
  * @~english
  * @brief Type enum
- * 
+ *
  */
 enum DW_RECORD_TYPES {
 	/**
@@ -160,21 +160,21 @@ enum DW_RECORD_TYPES {
 	/**
 	 * @~english
 	 * @brief Double
-	 * 
+	 *
 	 */
 	DW_RECORD_DOUBLE = 'D',
 
 	/**
 	 * @~english
 	 * @brief Logical
-	 * 
+	 *
 	 */
 	DW_RECORD_LOGICAL = 'L',
 
 	/**
 	 * @~english
 	 * @brief HELP
-	 * 
+	 *
 	 */
 	DW_RECORD_HELP = '?',
 };
@@ -245,7 +245,7 @@ struct dataworks_db_record {
 	/**
 	 * @~english
 	 * @brief Type. See enum DW_RECORD_TYPES.
-	 * 
+	 *
 	 */
 	char type;
 };
@@ -385,6 +385,16 @@ uint64_t dataworks_database_get_mtime(struct dataworks_db* db);
  */
 char** dataworks_database_get_table_list(struct dataworks_db* db);
 
+/**
+ * @~english
+ * @brief Get the fields of the table of the database.
+ * @param db Database
+ * @param table Table name
+ * @return Fields of the table
+ *
+ */
+char** dataworks_database_get_table_fields(struct dataworks_db* db, const char* table);
+
 /**
  * @~english
  * @brief Creates a table.
-- 
2.43.0