resource: Move sr_file_get_size() to resource.c

[libsigrok.git] / src / input / input.c

diff --git a/src/input/input.c b/src/input/input.c
index e93925d2b1c590572d7eb5b66ad7fa839b57d283..5e8f2129676f1f2839953a7c5dd797debbd1fca9 100644 (file)
--- a/src/input/input.c
+++ b/src/input/input.c
@@ -403,43 +403,6 @@ SR_API int sr_input_scan_buffer(GString *buf, const struct sr_input **in)
        return ret;
 }
 
-/** Retrieve the size of the open stream @a file.
- * This function only works on seekable streams. However, the set of seekable
- * streams is generally congruent with the set of streams that have a size.
- * Code that needs to work with any type of stream (including pipes) should
- * require neither seekability nor advance knowledge of the size.
- * On failure, the return value is negative and errno is set.
- * @param file An I/O stream opened in binary mode.
- * @return The size of @a file in bytes, or a negative value on failure.
- */
-SR_PRIV int64_t sr_file_get_size(FILE *file)
-{
-       off_t filepos, filesize;
-
-       /* ftello() and fseeko() are not standard C, but part of POSIX.1-2001.
-        * Thus, if these functions are available at all, they can reasonably
-        * be expected to also conform to POSIX semantics. In particular, this
-        * means that ftello() after fseeko(..., SEEK_END) has a defined result
-        * and can be used to get the size of a seekable stream.
-        * On Windows, the result is fully defined only for binary streams.
-        */
-       filepos = ftello(file);
-       if (filepos < 0)
-               return -1;
-
-       if (fseeko(file, 0, SEEK_END) < 0)
-               return -1;
-
-       filesize = ftello(file);
-       if (filesize < 0)
-               return -1;
-
-       if (fseeko(file, filepos, SEEK_SET) < 0)
-               return -1;
-
-       return filesize;
-}
-
 /**
  * Try to find an input module that can parse the given file.
  *