1 files changed, 29 insertions, 0 deletions
diff --git a/examples/dte/file-history.h b/examples/dte/file-history.h
new file mode 100644
index 0000000..0a51891
--- /dev/null
+++ b/examples/dte/file-history.h
@@ -0,0 +1,29 @@
+#ifndef FILE_HISTORY_H
+#define FILE_HISTORY_H
+
+#include <stdbool.h>
+#include "util/hashmap.h"
+#include "util/macros.h"
+
+typedef struct FileHistoryEntry {
+    struct FileHistoryEntry *next;
+    struct FileHistoryEntry *prev;
+    char *filename;
+    unsigned long row;
+    unsigned long col;
+} FileHistoryEntry;
+
+typedef struct {
+    char *filename;
+    HashMap entries;
+    FileHistoryEntry *first;
+    FileHistoryEntry *last;
+} FileHistory;
+
+void file_history_add(FileHistory *hist, unsigned long row, unsigned long col, const char *filename);
+void file_history_load(FileHistory *hist, char *filename);
+void file_history_save(const FileHistory *hist);
+bool file_history_find(const FileHistory *hist, const char *filename, unsigned long *row, unsigned long *col) WARN_UNUSED_RESULT;
+void file_history_free(FileHistory *history);
+
+#endif