pmt: revert 7f8090b

include/libgnulib/sf-istream.h

@@ -1,77 +0,0 @@
-/* A string or file based input stream.
-   Copyright (C) 2024 Free Software Foundation, Inc.
-
-   This file is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as
-   published by the Free Software Foundation, either version 3 of the
-   License, or (at your option) any later version.
-
-   This file is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
-
-/* Written by Bruno Haible <bruno@clisp.org>, 2024.  */
-
-#ifndef _SF_ISTREAM_H
-#define _SF_ISTREAM_H
-
-#include <stdio.h>
-
-#include "string-desc.h"
-
-/* An input stream type that can read from a file or from a string.  */
-typedef struct sf_istream sf_istream_t;
-struct sf_istream
-{
-  /* The input file stream, when reading from a file.  */
-  FILE *fp;
-  /* The input area, when reading from a string.  */
-  const char *input;
-  const char *input_end;
-};
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* Initializes STREAM to read from FP.
-   FP must be a FILE stream open for reading.  */
-extern void sf_istream_init_from_file (sf_istream_t *stream, FILE *fp);
-/* Initializes STREAM to read from a NUL-terminated string INPUT.
-   The contents of INPUT must stay available and unchanged as long as STREAM
-   is in use.  */
-extern void sf_istream_init_from_string (sf_istream_t *stream,
-                                         const char *input);
-/* Initializes STREAM to read from a string INPUT.
-   The contents of INPUT must stay available and unchanged as long as STREAM
-   is in use.  Operations on STREAM will not modify the contents of INPUT.  */
-extern void sf_istream_init_from_string_desc (sf_istream_t *stream,
-                                              string_desc_t input);
-
-/* Reads a single 'char' from STREAM, and returns it as an 'unsigned char'.
-   Returns EOF when the end of stream was already reached.  */
-extern int sf_getc (sf_istream_t *stream);
-
-/* Tests whether STREAM has encountered an error.
-   You may want to call this function after sf_getc (stream) has
-   returned EOF; in other situations it is guaranteed to return 0.  */
-extern int sf_ferror (sf_istream_t *stream);
-
-/* Assuming that C was the last value returned by sf_getc (stream),
-   this call pushes back C onto the stream.
-   Only 1 character of pushback is guaranteed.  */
-extern void sf_ungetc (sf_istream_t *stream, int c);
-
-/* Frees all memory held by STREAM.
-   This call has no effect on the arguments provided to sf_istream_init_*.  */
-extern void sf_free (sf_istream_t *stream);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _SF_ISTREAM_H */