Add mtar_eof_data()

Returns true when the end of the current file has been reached.
Handy when reading file data in a loop.

2 files changed, 10 insertions, 0 deletions

diff --git a/src/microtar.c b/src/microtar.c
index 97f53fb..0ff038c 100644
--- a/src/microtar.c
+++ b/src/microtar.c
@@ -370,3 +370,12 @@ int mtar_read_data(mtar_t* tar, void* ptr, unsigned size)
 
     return (int)size;
 }
+
+int mtar_eof_data(mtar_t* tar)
+{
+    /* API usage error, but just claim EOF. */
+    if(!(tar->state & S_HEADER_VALID))
+        return 1;
+
+    return tar->pos >= data_end_pos(tar) ? 1 : 0;
+}
diff --git a/src/microtar.h b/src/microtar.h
index a6d058b..b3ff05f 100644
--- a/src/microtar.h
+++ b/src/microtar.h
@@ -106,6 +106,7 @@ int mtar_next(mtar_t* tar);
 int mtar_foreach(mtar_t* tar, mtar_foreach_cb cb, void* arg);
 int mtar_find(mtar_t* tar, const char* name);
 int mtar_read_data(mtar_t* tar, void* ptr, unsigned size);
+int mtar_eof_data(mtar_t* tar);
 
 #ifdef __cplusplus
 }