X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=internals%2F_PDCLIB_io.h;fp=internals%2F_PDCLIB_io.h;h=0dfdad258fc6356a107597cfc830080cd1ccf82a;hb=026148e2e90368c0b23192f506e15aa6197105aa;hp=0000000000000000000000000000000000000000;hpb=e70d680319ea23460b891e14259f2f6b3a568291;p=pdclib

diff --git a/internals/_PDCLIB_io.h b/internals/_PDCLIB_io.h
new file mode 100644
index 0000000..0dfdad2
--- /dev/null
+++ b/internals/_PDCLIB_io.h
@@ -0,0 +1,63 @@
+#ifndef _PDCLIB_IO_H
+#define _PDCLIB_IO_H
+#include "_PDCLIB_int.h"
+#include "_PDCLIB_threadconfig.h"
+
+/* PDCLib internal I/O logic <_PDCLIB_int.h>
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+/* Flags for representing mode (see fopen()). Note these must fit the same
+   status field as the _IO?BF flags in <stdio.h> and the internal flags below.
+*/
+#define _PDCLIB_FREAD     8u
+#define _PDCLIB_FWRITE   16u
+#define _PDCLIB_FAPPEND  32u 
+#define _PDCLIB_FRW      64u
+#define _PDCLIB_FBIN    128u
+
+/* Internal flags, made to fit the same status field as the flags above. */
+/* -------------------------------------------------------------------------- */
+/* free() the buffer memory on closing (false for user-supplied buffer) */
+#define _PDCLIB_FREEBUFFER   512u
+/* stream has encountered error / EOF */
+#define _PDCLIB_ERRORFLAG   1024u
+#define _PDCLIB_EOFFLAG     2048u
+/* stream is wide-oriented */
+#define _PDCLIB_WIDESTREAM  4096u
+/* stream is byte-oriented */
+#define _PDCLIB_BYTESTREAM  8192u
+/* file associated with stream should be remove()d on closing (tmpfile()) */
+#define _PDCLIB_DELONCLOSE 16384u
+/* stream handle should not be free()d on close (stdin, stdout, stderr) */
+#define _PDCLIB_STATIC     32768u
+
+/* Position / status structure for getpos() / fsetpos(). */
+struct _PDCLIB_fpos_t
+{
+    _PDCLIB_uint64_t offset; /* File position offset */
+    int              status; /* Multibyte parsing state (unused, reserved) */
+};
+
+/* FILE structure */
+struct _PDCLIB_file_t
+{
+    _PDCLIB_fd_t            handle;   /* OS file handle */
+    _PDCLIB_MTX_T           lock;     /* file lock */
+    char *                  buffer;   /* Pointer to buffer memory */
+    _PDCLIB_size_t          bufsize;  /* Size of buffer */
+    _PDCLIB_size_t          bufidx;   /* Index of current position in buffer */
+    _PDCLIB_size_t          bufend;   /* Index of last pre-read character in buffer */
+    struct _PDCLIB_fpos_t   pos;      /* Offset and multibyte parsing state */
+    _PDCLIB_size_t          ungetidx; /* Number of ungetc()'ed characters */
+    unsigned char *         ungetbuf; /* ungetc() buffer */
+    unsigned int            status;   /* Status flags; see above */
+    /* multibyte parsing status to be added later */
+    char *                  filename; /* Name the current stream has been opened with */
+    struct _PDCLIB_file_t * next;     /* Pointer to next struct (internal) */
+};
+
+
+#endif