Merged branch stdio_rewrite back into trunk.

[pdclib] / platform / example / internals / _PDCLIB_config.h

diff --git a/platform/example/internals/_PDCLIB_config.h b/platform/example/internals/_PDCLIB_config.h
index 0df16791cd26f98afbd8f5c53343585d73a2295a..6864eb9a4b11f6b8e68566b5a1be13fe10305b39 100644 (file)
--- a/platform/example/internals/_PDCLIB_config.h
+++ b/platform/example/internals/_PDCLIB_config.h
@@ -11,14 +11,6 @@
 /* Misc                                                                       */
 /* -------------------------------------------------------------------------- */
 
-/* By default, PDCLib does some rather strict checking of function usage,     */
-/* especially in <stdio.h>. Things that are undefined by the standard - for   */
-/* example, mixing byte / wide operations or read / write operations without  */
-/* resetting the stream beforehand - are caught and handled graciously. This  */
-/* adds some complexity, and eats a couple of clock cycles. If you want to    */
-/* disable these checks, define _PDCLIB_STRICT to zero.                       */
-#define _PDCLIB_STRICT 1
-
 /* The character (sequence) your platform uses as newline.                    */
 #define _PDCLIB_endl "\n"
 
@@ -244,21 +236,13 @@ typedef int _PDCLIB_fd_t;
 */
 #define _PDCLIB_NOHANDLE ( (_PDCLIB_fd_t) -1 )
 
-/* A type in which to store file offsets. See fgetpos() / fsetpos(). */
-/* FIXME: The 'int' types here are placeholders. When changed, check out
-   stdinit.c, too. */
-typedef struct
-{
-    int position;
-    int mbstate;
-} _PDCLIB_fpos_t;
-
 /* The default size for file buffers. Must be at least 256. */
 #define _PDCLIB_BUFSIZ 1024
 
 /* The minimum number of files the implementation can open simultaneously. Must
    be at least 8. Depends largely on how the bookkeeping is done by fopen() /
-   freopen() / fclose().
+   freopen() / fclose(). The example implementation limits the number of open
+   files only by available memory.
 */
 #define _PDCLIB_FOPEN_MAX 8
 
@@ -271,13 +255,17 @@ typedef struct
 /* Number of distinct file names that can be generated by tmpnam(). */
 #define _PDCLIB_TMP_MAX 50
 
-/* The number of times fflush() tries to write a file buffer before giving up
-   if no characters can be written.
+/* The values of SEEK_SET, SEEK_CUR and SEEK_END, used by fseek().
+   Since at least one platform (POSIX) uses the same symbols for its own "seek"
+   function, we use whatever the host defines (if it does define them).
 */
-#define _PDCLIB_FLUSH_RETRIES 3
-/* This macro is executed after each try to write characters that results in
-   no characters being written. You can define this to be empty, wait a short
-   period of time, or whatever suits your environment.
+#define _PDCLIB_SEEK_SET 0
+#define _PDCLIB_SEEK_CUR 1
+#define _PDCLIB_SEEK_END 2
+
+/* The number of characters that can be buffered with ungetc(). The standard
+   guarantees only one (1); anything larger would make applications relying on
+   this capability dependent on implementation-defined behaviour (not good).
 */
-#define _PDCLIB_FLUSH_RETRY_PREP
+#define _PDCLIB_UNGETCBUFSIZE 1