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From-SVN: r153827

libgfortran/io/fbuf.h

+/* Copyright (C) 2009
+   Free Software Foundation, Inc.
+   Contributed by Janne Blomqvist
+
+This file is part of the GNU Fortran runtime library (libgfortran).
+
+Libgfortran 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 3, or (at your option)
+any later version.
+
+Libgfortran 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "io.h"
+
+#ifndef GFOR_FBUF_H
+#define GFOR_FBUF_H
+
+
+/* Formatting buffer. This is a temporary scratch buffer used by
+   formatted read and writes.  After every formatted I/O statement,
+   this buffer is flushed. This buffer is needed since not all devices
+   are seekable, and T or TL edit descriptors require moving backwards
+   in the record.  However, advance='no' complicates the situation, so
+   the buffer must only be partially flushed from the end of the last
+   flush until the current position in the record. */
+
+struct fbuf
+{
+  char *buf;			/* Start of buffer.  */
+  int len;			/* Length of buffer.  */
+  int act;			/* Active bytes in buffer.  */
+  int pos;			/* Current position in buffer.  */
+};
+
+extern void fbuf_init (gfc_unit *, int);
+internal_proto(fbuf_init);
+
+extern void fbuf_destroy (gfc_unit *);
+internal_proto(fbuf_destroy);
+
+extern int fbuf_reset (gfc_unit *);
+internal_proto(fbuf_reset);
+
+extern char * fbuf_alloc (gfc_unit *, int);
+internal_proto(fbuf_alloc);
+
+extern int fbuf_flush (gfc_unit *, unit_mode);
+internal_proto(fbuf_flush);
+
+extern int fbuf_seek (gfc_unit *, int, int);
+internal_proto(fbuf_seek);
+
+extern char * fbuf_read (gfc_unit *, int *);
+internal_proto(fbuf_read);
+
+/* Never call this function, only use fbuf_getc().  */
+extern int fbuf_getc_refill (gfc_unit *);
+internal_proto(fbuf_getc_refill);
+
+static inline int
+fbuf_getc (gfc_unit * u)
+{
+  if (u->fbuf->pos < u->fbuf->act)
+    return (unsigned char) u->fbuf->buf[u->fbuf->pos++];
+  return fbuf_getc_refill (u);
+}
+
+#endif

libgfortran/io/format.h

+/* Copyright (C) 2009
+   Free Software Foundation, Inc.
+   Contributed by Janne Blomqvist
+
+This file is part of the GNU Fortran runtime library (libgfortran).
+
+Libgfortran 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 3, or (at your option)
+any later version.
+
+Libgfortran 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "io.h"
+
+#ifndef GFOR_FORMAT_H
+#define GFOR_FORMAT_H
+
+/* Format tokens.  Only about half of these can be stored in the
+   format nodes.  */
+
+typedef enum
+{
+  FMT_NONE = 0, FMT_UNKNOWN, FMT_SIGNED_INT, FMT_ZERO, FMT_POSINT, FMT_PERIOD,
+  FMT_COMMA, FMT_COLON, FMT_SLASH, FMT_DOLLAR, FMT_T, FMT_TR, FMT_TL,
+  FMT_LPAREN, FMT_RPAREN, FMT_X, FMT_S, FMT_SS, FMT_SP, FMT_STRING,
+  FMT_BADSTRING, FMT_P, FMT_I, FMT_B, FMT_BN, FMT_BZ, FMT_O, FMT_Z, FMT_F,
+  FMT_E, FMT_EN, FMT_ES, FMT_G, FMT_L, FMT_A, FMT_D, FMT_H, FMT_END, FMT_DC,
+  FMT_DP, FMT_STAR, FMT_RC, FMT_RD, FMT_RN, FMT_RP, FMT_RU, FMT_RZ
+}
+format_token;
+
+
+/* Format nodes.  A format string is converted into a tree of these
+   structures, which is traversed as part of a data transfer statement.  */
+
+struct fnode
+{
+  format_token format;
+  int repeat;
+  struct fnode *next;
+  char *source;
+
+  union
+  {
+    struct
+    {
+      int w, d, e;
+    }
+    real;
+
+    struct
+    {
+      int length;
+      char *p;
+    }
+    string;
+
+    struct
+    {
+      int w, m;
+    }
+    integer;
+
+    int w;
+    int k;
+    int r;
+    int n;
+
+    struct fnode *child;
+  }
+  u;
+
+  /* Members for traversing the tree during data transfer.  */
+
+  int count;
+  struct fnode *current;
+
+};
+
+
+extern void parse_format (st_parameter_dt *);
+internal_proto(parse_format);
+
+extern const fnode *next_format (st_parameter_dt *);
+internal_proto(next_format);
+
+extern void unget_format (st_parameter_dt *, const fnode *);
+internal_proto(unget_format);
+
+extern void format_error (st_parameter_dt *, const fnode *, const char *);
+internal_proto(format_error);
+
+extern void free_format_data (struct format_data *);
+internal_proto(free_format_data);
+
+extern void free_format_hash_table (gfc_unit *);
+internal_proto(free_format_hash_table);
+
+extern void init_format_hash (st_parameter_dt *);
+internal_proto(init_format_hash);
+
+extern void free_format_hash (st_parameter_dt *);
+internal_proto(free_format_hash);
+
+#endif

libgfortran/io/unix.h

+/* Copyright (C) 2009
+   Free Software Foundation, Inc.
+   Contributed by Janne Blomqvist
+
+This file is part of the GNU Fortran runtime library (libgfortran).
+
+Libgfortran 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 3, or (at your option)
+any later version.
+
+Libgfortran 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.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "io.h"
+
+#ifndef GFOR_UNIX_H
+#define GFOR_UNIX_H
+
+struct stream
+{
+  ssize_t (*read) (struct stream *, void *, ssize_t);
+  ssize_t (*write) (struct stream *, const void *, ssize_t);
+  off_t (*seek) (struct stream *, off_t, int);
+  off_t (*tell) (struct stream *);
+  /* Avoid keyword truncate due to AIX namespace collision.  */
+  int (*trunc) (struct stream *, off_t);
+  int (*flush) (struct stream *);
+  int (*close) (struct stream *);
+};
+
+/* Inline functions for doing file I/O given a stream.  */
+static inline ssize_t
+sread (stream * s, void * buf, ssize_t nbyte)
+{
+  return s->read (s, buf, nbyte);
+}
+
+static inline ssize_t
+swrite (stream * s, const void * buf, ssize_t nbyte)
+{
+  return s->write (s, buf, nbyte);
+}
+
+static inline off_t
+sseek (stream * s, off_t offset, int whence)
+{
+  return s->seek (s, offset, whence);
+}
+
+static inline off_t
+stell (stream * s)
+{
+  return s->tell (s);
+}
+
+static inline int
+struncate (stream * s, off_t length)
+{
+  return s->trunc (s, length);
+}
+
+static inline int
+sflush (stream * s)
+{
+  return s->flush (s);
+}
+
+static inline int
+sclose (stream * s)
+{
+  return s->close (s);
+}
+
+
+extern int compare_files (stream *, stream *);
+internal_proto(compare_files);
+
+extern stream *open_external (st_parameter_open *, unit_flags *);
+internal_proto(open_external);
+
+extern stream *open_internal (char *, int, gfc_offset);
+internal_proto(open_internal);
+
+extern char * mem_alloc_w (stream *, int *);
+internal_proto(mem_alloc_w);
+
+extern char * mem_alloc_r (stream *, int *);
+internal_proto(mem_alloc_w);
+
+extern stream *input_stream (void);
+internal_proto(input_stream);
+
+extern stream *output_stream (void);
+internal_proto(output_stream);
+
+extern stream *error_stream (void);
+internal_proto(error_stream);
+
+extern int compare_file_filename (gfc_unit *, const char *, int);
+internal_proto(compare_file_filename);
+
+extern gfc_unit *find_file (const char *file, gfc_charlen_type file_len);
+internal_proto(find_file);
+
+extern int delete_file (gfc_unit *);
+internal_proto(delete_file);
+
+extern int file_exists (const char *file, gfc_charlen_type file_len);
+internal_proto(file_exists);
+
+extern const char *inquire_sequential (const char *, int);
+internal_proto(inquire_sequential);
+
+extern const char *inquire_direct (const char *, int);
+internal_proto(inquire_direct);
+
+extern const char *inquire_formatted (const char *, int);
+internal_proto(inquire_formatted);
+
+extern const char *inquire_unformatted (const char *, int);
+internal_proto(inquire_unformatted);
+
+extern const char *inquire_read (const char *, int);
+internal_proto(inquire_read);
+
+extern const char *inquire_write (const char *, int);
+internal_proto(inquire_write);
+
+extern const char *inquire_readwrite (const char *, int);
+internal_proto(inquire_readwrite);
+
+extern gfc_offset file_length (stream *);
+internal_proto(file_length);
+
+extern int is_seekable (stream *);
+internal_proto(is_seekable);
+
+extern int is_special (stream *);
+internal_proto(is_special);
+
+extern void flush_if_preconnected (stream *);
+internal_proto(flush_if_preconnected);
+
+extern void empty_internal_buffer(stream *);
+internal_proto(empty_internal_buffer);
+
+extern int stream_isatty (stream *);
+internal_proto(stream_isatty);
+
+extern char * stream_ttyname (stream *);
+internal_proto(stream_ttyname);
+
+extern int unpack_filename (char *, const char *, int);
+internal_proto(unpack_filename);
+
+
+#endif