Initial revision

gas/input-file.h

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+/* input_file.h header for input-file.c
+   Copyright (C) 1987 Free Software Foundation, Inc.
+
+This file is part of GAS, the GNU Assembler.
+
+GAS is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 1, or (at your option)
+any later version.
+
+GAS 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GAS; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/*"input_file.c":Operating-system dependant functions to read source files.*/
+
+
+/*
+ * No matter what the operating system, this module must provide the
+ * following services to its callers.
+ *
+ * input_file_begin()			Call once before anything else.
+ *
+ * input_file_end()			Call once after everything else.
+ *
+ * input_file_buffer_size()		Call anytime. Returns largest possible
+ *					delivery from
+ *					input_file_give_next_buffer().
+ *
+ * input_file_open(name)		Call once for each input file.
+ *
+ * input_file_give_next_buffer(where)	Call once to get each new buffer.
+ *					Return 0: no more chars left in file,
+ *					   the file has already been closed.
+ *					Otherwise: return a pointer to just
+ *					   after the last character we read
+ *					   into the buffer.
+ *					If we can only read 0 characters, then
+ *					end-of-file is faked.
+ *
+ * input_file_push()			Push state, which can be restored
+ *					later.  Does implicit input_file_begin.
+ *					Returns char * to saved state.
+ *
+ * input_file_pop (arg)			Pops previously saved state.
+ *
+ * input_file_close ()			Closes opened file.
+ *
+ * All errors are reported (using as_perror) so caller doesn't have to think
+ * about I/O errors. No I/O errors are fatal: an end-of-file may be faked.
+ */
+
+#ifdef __STDC__
+
+char *input_file_give_next_buffer(char *where);
+char *input_file_push(void);
+int input_file_buffer_size(void);
+int input_file_is_open(void);
+void input_file_begin(void);
+void input_file_close(void);
+void input_file_end(void);
+void input_file_open(char *filename, int pre);
+void input_file_pop(char *arg);
+
+#else /* __STDC__ */
+
+char *input_file_give_next_buffer();
+char *input_file_push();
+int input_file_buffer_size();
+int input_file_is_open();
+void input_file_begin();
+void input_file_close();
+void input_file_end();
+void input_file_open();
+void input_file_pop();
+
+#endif /* __STDC__ */
+
+/* end: input_file.h */