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/* Implementation of the FGET, FGETC, FPUT, FPUTC, FLUSH
   FTELL, TTYNAM and ISATTY intrinsics.
   Copyright (C) 2005, 2007, 2009, 2010, 2011 Free Software
   Foundation, Inc.
 
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 of the License, 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"
#include "fbuf.h"
#include "unix.h"
#include <stdlib.h>
#include <string.h>
 
 
static const int five = 5;
static const int six = 6;
 
extern int PREFIX(fgetc) (const int *, char *, gfc_charlen_type);
export_proto_np(PREFIX(fgetc));
 
int
PREFIX(fgetc) (const int * unit, char * c, gfc_charlen_type c_len)
{
  int ret;
  gfc_unit * u = find_unit (*unit);
 
  if (u == NULL)
    return -1;
 
  fbuf_reset (u);
  if (u->mode == WRITING)
    {
      sflush (u->s);
      u->mode = READING;
    }
 
  memset (c, ' ', c_len);
  ret = sread (u->s, c, 1);
  unlock_unit (u);
 
  if (ret < 0)
    return ret;
 
  if (ret != 1)
    return -1;
  else
    return 0;
}
 
 
#define FGETC_SUB(kind) \
  extern void fgetc_i ## kind ## _sub \
    (const int *, char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
  export_proto(fgetc_i ## kind ## _sub); \
  void fgetc_i ## kind ## _sub \
  (const int * unit, char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
    { if (st != NULL) \
        *st = PREFIX(fgetc) (unit, c, c_len); \
      else \
        PREFIX(fgetc) (unit, c, c_len); }
 
FGETC_SUB(1)
FGETC_SUB(2)
FGETC_SUB(4)
FGETC_SUB(8)
 
 
extern int PREFIX(fget) (char *, gfc_charlen_type);
export_proto_np(PREFIX(fget));
 
int
PREFIX(fget) (char * c, gfc_charlen_type c_len)
{
  return PREFIX(fgetc) (&five, c, c_len);
}
 
 
#define FGET_SUB(kind) \
  extern void fget_i ## kind ## _sub \
    (char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
  export_proto(fget_i ## kind ## _sub); \
  void fget_i ## kind ## _sub \
  (char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
    { if (st != NULL) \
        *st = PREFIX(fgetc) (&five, c, c_len); \
      else \
        PREFIX(fgetc) (&five, c, c_len); }
 
FGET_SUB(1)
FGET_SUB(2)
FGET_SUB(4)
FGET_SUB(8)
 
 
 
extern int PREFIX(fputc) (const int *, char *, gfc_charlen_type);
export_proto_np(PREFIX(fputc));
 
int
PREFIX(fputc) (const int * unit, char * c,
               gfc_charlen_type c_len __attribute__((unused)))
{
  ssize_t s;
  gfc_unit * u = find_unit (*unit);
 
  if (u == NULL)
    return -1;
 
  fbuf_reset (u);
  if (u->mode == READING)
    {
      sflush (u->s);
      u->mode = WRITING;
    }
 
  s = swrite (u->s, c, 1);
  unlock_unit (u);
  if (s < 0)
    return -1;
  return 0;
}
 
 
#define FPUTC_SUB(kind) \
  extern void fputc_i ## kind ## _sub \
    (const int *, char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
  export_proto(fputc_i ## kind ## _sub); \
  void fputc_i ## kind ## _sub \
  (const int * unit, char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
    { if (st != NULL) \
        *st = PREFIX(fputc) (unit, c, c_len); \
      else \
        PREFIX(fputc) (unit, c, c_len); }
 
FPUTC_SUB(1)
FPUTC_SUB(2)
FPUTC_SUB(4)
FPUTC_SUB(8)
 
 
extern int PREFIX(fput) (char *, gfc_charlen_type);
export_proto_np(PREFIX(fput));
 
int
PREFIX(fput) (char * c, gfc_charlen_type c_len)
{
  return PREFIX(fputc) (&six, c, c_len);
}
 
 
#define FPUT_SUB(kind) \
  extern void fput_i ## kind ## _sub \
    (char *, GFC_INTEGER_ ## kind *, gfc_charlen_type); \
  export_proto(fput_i ## kind ## _sub); \
  void fput_i ## kind ## _sub \
  (char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \
    { if (st != NULL) \
        *st = PREFIX(fputc) (&six, c, c_len); \
      else \
        PREFIX(fputc) (&six, c, c_len); }
 
FPUT_SUB(1)
FPUT_SUB(2)
FPUT_SUB(4)
FPUT_SUB(8)
 
 
/* SUBROUTINE FLUSH(UNIT)
   INTEGER, INTENT(IN), OPTIONAL :: UNIT  */
 
extern void flush_i4 (GFC_INTEGER_4 *);
export_proto(flush_i4);
 
void
flush_i4 (GFC_INTEGER_4 *unit)
{
  gfc_unit *us;
 
  /* flush all streams */
  if (unit == NULL)
    flush_all_units ();
  else
    {
      us = find_unit (*unit);
      if (us != NULL)
        {
          sflush (us->s);
          unlock_unit (us);
        }
    }
}
 
 
extern void flush_i8 (GFC_INTEGER_8 *);
export_proto(flush_i8);
 
void
flush_i8 (GFC_INTEGER_8 *unit)
{
  gfc_unit *us;
 
  /* flush all streams */
  if (unit == NULL)
    flush_all_units ();
  else
    {
      us = find_unit (*unit);
      if (us != NULL)
        {
          sflush (us->s);
          unlock_unit (us);
        }
    }
}
 
/* FSEEK intrinsic */
 
extern void fseek_sub (int *, GFC_IO_INT *, int *, int *);
export_proto(fseek_sub);
 
void
fseek_sub (int * unit, GFC_IO_INT * offset, int * whence, int * status)
{
  gfc_unit * u = find_unit (*unit);
  ssize_t result = -1;
 
  if (u != NULL)
    {
      result = sseek(u->s, *offset, *whence);
 
      unlock_unit (u);
    }
 
  if (status)
    *status = (result < 0 ? -1 : 0);
}
 
 
 
/* FTELL intrinsic */
 
static gfc_offset
gf_ftell (int unit)
{
  gfc_unit * u = find_unit (unit);
  if (u == NULL)
    return -1;
  int pos = fbuf_reset (u);
  if (pos != 0)
    sseek (u->s, pos, SEEK_CUR);
  gfc_offset ret = stell (u->s);
  unlock_unit (u);
  return ret;
}
 
extern size_t PREFIX(ftell) (int *);
export_proto_np(PREFIX(ftell));
 
size_t
PREFIX(ftell) (int * unit)
{
  return gf_ftell (*unit);
}
 
#define FTELL_SUB(kind) \
  extern void ftell_i ## kind ## _sub (int *, GFC_INTEGER_ ## kind *); \
  export_proto(ftell_i ## kind ## _sub); \
  void \
  ftell_i ## kind ## _sub (int * unit, GFC_INTEGER_ ## kind * offset) \
  { \
    *offset = gf_ftell (*unit);                 \
  }
 
FTELL_SUB(1)
FTELL_SUB(2)
FTELL_SUB(4)
FTELL_SUB(8)
 
 
 
/* LOGICAL FUNCTION ISATTY(UNIT)
   INTEGER, INTENT(IN) :: UNIT */
 
extern GFC_LOGICAL_4 isatty_l4 (int *);
export_proto(isatty_l4);
 
GFC_LOGICAL_4
isatty_l4 (int *unit)
{
  gfc_unit *u;
  GFC_LOGICAL_4 ret = 0;
 
  u = find_unit (*unit);
  if (u != NULL)
    {
      ret = (GFC_LOGICAL_4) stream_isatty (u->s);
      unlock_unit (u);
    }
  return ret;
}
 
 
extern GFC_LOGICAL_8 isatty_l8 (int *);
export_proto(isatty_l8);
 
GFC_LOGICAL_8
isatty_l8 (int *unit)
{
  gfc_unit *u;
  GFC_LOGICAL_8 ret = 0;
 
  u = find_unit (*unit);
  if (u != NULL)
    {
      ret = (GFC_LOGICAL_8) stream_isatty (u->s);
      unlock_unit (u);
    }
  return ret;
}
 
 
/* SUBROUTINE TTYNAM(UNIT,NAME)
   INTEGER,SCALAR,INTENT(IN) :: UNIT
   CHARACTER,SCALAR,INTENT(OUT) :: NAME */
 
extern void ttynam_sub (int *, char *, gfc_charlen_type);
export_proto(ttynam_sub);
 
void
ttynam_sub (int *unit, char * name, gfc_charlen_type name_len)
{
  gfc_unit *u;
  int nlen;
  int err = 1;
 
  u = find_unit (*unit);
  if (u != NULL)
    {
      err = stream_ttyname (u->s, name, name_len);
      if (err == 0)
        {
          nlen = strlen (name);
          memset (&name[nlen], ' ', name_len - nlen);
        }
 
      unlock_unit (u);
    }
  if (err != 0)
    memset (name, ' ', name_len);
}
 
 
extern void ttynam (char **, gfc_charlen_type *, int);
export_proto(ttynam);
 
void
ttynam (char ** name, gfc_charlen_type * name_len, int unit)
{
  gfc_unit *u;
 
  u = find_unit (unit);
  if (u != NULL)
    {
      *name = get_mem (TTY_NAME_MAX);
      int err = stream_ttyname (u->s, *name, TTY_NAME_MAX);
      if (err == 0)
        {
          *name_len = strlen (*name);
          unlock_unit (u);
          return;
        }
      free (*name);
      unlock_unit (u);
    }
 
  *name_len = 0;
  *name = NULL;
}

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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgfortran/] [io/] [intrinsics.c] - Blame information for rev 834

Line No.	Rev	Author	Line
1	733	jeremybenn	`/* Implementation of the FGET, FGETC, FPUT, FPUTC, FLUSH`
2			`FTELL, TTYNAM and ISATTY intrinsics.`
3			`Copyright (C) 2005, 2007, 2009, 2010, 2011 Free Software`
4			`Foundation, Inc.`
5
6			`This file is part of the GNU Fortran runtime library (libgfortran).`
7
8			`Libgfortran is free software; you can redistribute it and/or`
9			`modify it under the terms of the GNU General Public`
10			`License as published by the Free Software Foundation; either`
11			`version 3 of the License, or (at your option) any later version.`
12
13			`Libgfortran is distributed in the hope that it will be useful,`
14			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
15			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
16			`GNU General Public License for more details.`
17
18			`Under Section 7 of GPL version 3, you are granted additional`
19			`permissions described in the GCC Runtime Library Exception, version`
20			`3.1, as published by the Free Software Foundation.`
21
22			`You should have received a copy of the GNU General Public License and`
23			`a copy of the GCC Runtime Library Exception along with this program;`
24			`see the files COPYING3 and COPYING.RUNTIME respectively. If not, see`
25			`<http://www.gnu.org/licenses/>. */`
26
27			`#include "io.h"`
28			`#include "fbuf.h"`
29			`#include "unix.h"`
30			`#include <stdlib.h>`
31			`#include <string.h>`
32
33
34			`static const int five = 5;`
35			`static const int six = 6;`
36
37			`extern int PREFIX(fgetc) (const int , char , gfc_charlen_type);`
38			`export_proto_np(PREFIX(fgetc));`
39
40			`int`
41			`PREFIX(fgetc) (const int * unit, char * c, gfc_charlen_type c_len)`
42			`{`
43			`int ret;`
44			`gfc_unit * u = find_unit (*unit);`
45
46			`if (u == NULL)`
47			`return -1;`
48
49			`fbuf_reset (u);`
50			`if (u->mode == WRITING)`
51			`{`
52			`sflush (u->s);`
53			`u->mode = READING;`
54			`}`
55
56			`memset (c, ' ', c_len);`
57			`ret = sread (u->s, c, 1);`
58			`unlock_unit (u);`
59
60			`if (ret < 0)`
61			`return ret;`
62
63			`if (ret != 1)`
64			`return -1;`
65			`else`
66			`return 0;`
67			`}`
68
69
70			`#define FGETC_SUB(kind) \`
71			`extern void fgetc_i ## kind ## _sub \`
72			`(const int , char , GFC_INTEGER_ ## kind *, gfc_charlen_type); \`
73			`export_proto(fgetc_i ## kind ## _sub); \`
74			`void fgetc_i ## kind ## _sub \`
75			`(const int * unit, char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \`
76			`{ if (st != NULL) \`
77			`*st = PREFIX(fgetc) (unit, c, c_len); \`
78			`else \`
79			`PREFIX(fgetc) (unit, c, c_len); }`
80
81			`FGETC_SUB(1)`
82			`FGETC_SUB(2)`
83			`FGETC_SUB(4)`
84			`FGETC_SUB(8)`
85
86
87			`extern int PREFIX(fget) (char *, gfc_charlen_type);`
88			`export_proto_np(PREFIX(fget));`
89
90			`int`
91			`PREFIX(fget) (char * c, gfc_charlen_type c_len)`
92			`{`
93			`return PREFIX(fgetc) (&five, c, c_len);`
94			`}`
95
96
97			`#define FGET_SUB(kind) \`
98			`extern void fget_i ## kind ## _sub \`
99			`(char , GFC_INTEGER_ ## kind , gfc_charlen_type); \`
100			`export_proto(fget_i ## kind ## _sub); \`
101			`void fget_i ## kind ## _sub \`
102			`(char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \`
103			`{ if (st != NULL) \`
104			`*st = PREFIX(fgetc) (&five, c, c_len); \`
105			`else \`
106			`PREFIX(fgetc) (&five, c, c_len); }`
107
108			`FGET_SUB(1)`
109			`FGET_SUB(2)`
110			`FGET_SUB(4)`
111			`FGET_SUB(8)`
112
113
114
115			`extern int PREFIX(fputc) (const int , char , gfc_charlen_type);`
116			`export_proto_np(PREFIX(fputc));`
117
118			`int`
119			`PREFIX(fputc) (const int * unit, char * c,`
120			`gfc_charlen_type c_len __attribute__((unused)))`
121			`{`
122			`ssize_t s;`
123			`gfc_unit * u = find_unit (*unit);`
124
125			`if (u == NULL)`
126			`return -1;`
127
128			`fbuf_reset (u);`
129			`if (u->mode == READING)`
130			`{`
131			`sflush (u->s);`
132			`u->mode = WRITING;`
133			`}`
134
135			`s = swrite (u->s, c, 1);`
136			`unlock_unit (u);`
137			`if (s < 0)`
138			`return -1;`
139			`return 0;`
140			`}`
141
142
143			`#define FPUTC_SUB(kind) \`
144			`extern void fputc_i ## kind ## _sub \`
145			`(const int , char , GFC_INTEGER_ ## kind *, gfc_charlen_type); \`
146			`export_proto(fputc_i ## kind ## _sub); \`
147			`void fputc_i ## kind ## _sub \`
148			`(const int * unit, char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \`
149			`{ if (st != NULL) \`
150			`*st = PREFIX(fputc) (unit, c, c_len); \`
151			`else \`
152			`PREFIX(fputc) (unit, c, c_len); }`
153
154			`FPUTC_SUB(1)`
155			`FPUTC_SUB(2)`
156			`FPUTC_SUB(4)`
157			`FPUTC_SUB(8)`
158
159
160			`extern int PREFIX(fput) (char *, gfc_charlen_type);`
161			`export_proto_np(PREFIX(fput));`
162
163			`int`
164			`PREFIX(fput) (char * c, gfc_charlen_type c_len)`
165			`{`
166			`return PREFIX(fputc) (&six, c, c_len);`
167			`}`
168
169
170			`#define FPUT_SUB(kind) \`
171			`extern void fput_i ## kind ## _sub \`
172			`(char , GFC_INTEGER_ ## kind , gfc_charlen_type); \`
173			`export_proto(fput_i ## kind ## _sub); \`
174			`void fput_i ## kind ## _sub \`
175			`(char * c, GFC_INTEGER_ ## kind * st, gfc_charlen_type c_len) \`
176			`{ if (st != NULL) \`
177			`*st = PREFIX(fputc) (&six, c, c_len); \`
178			`else \`
179			`PREFIX(fputc) (&six, c, c_len); }`
180
181			`FPUT_SUB(1)`
182			`FPUT_SUB(2)`
183			`FPUT_SUB(4)`
184			`FPUT_SUB(8)`
185
186
187			`/* SUBROUTINE FLUSH(UNIT)`
188			`INTEGER, INTENT(IN), OPTIONAL :: UNIT */`
189
190			`extern void flush_i4 (GFC_INTEGER_4 *);`
191			`export_proto(flush_i4);`
192
193			`void`
194			`flush_i4 (GFC_INTEGER_4 *unit)`
195			`{`
196			`gfc_unit *us;`
197
198			`/* flush all streams */`
199			`if (unit == NULL)`
200			`flush_all_units ();`
201			`else`
202			`{`
203			`us = find_unit (*unit);`
204			`if (us != NULL)`
205			`{`
206			`sflush (us->s);`
207			`unlock_unit (us);`
208			`}`
209			`}`
210			`}`
211
212
213			`extern void flush_i8 (GFC_INTEGER_8 *);`
214			`export_proto(flush_i8);`
215
216			`void`
217			`flush_i8 (GFC_INTEGER_8 *unit)`
218			`{`
219			`gfc_unit *us;`
220
221			`/* flush all streams */`
222			`if (unit == NULL)`
223			`flush_all_units ();`
224			`else`
225			`{`
226			`us = find_unit (*unit);`
227			`if (us != NULL)`
228			`{`
229			`sflush (us->s);`
230			`unlock_unit (us);`
231			`}`
232			`}`
233			`}`
234
235			`/* FSEEK intrinsic */`
236
237			`extern void fseek_sub (int , GFC_IO_INT , int , int );`
238			`export_proto(fseek_sub);`
239
240			`void`
241			`fseek_sub (int * unit, GFC_IO_INT * offset, int * whence, int * status)`
242			`{`
243			`gfc_unit * u = find_unit (*unit);`
244			`ssize_t result = -1;`
245
246			`if (u != NULL)`
247			`{`
248			`result = sseek(u->s, offset, whence);`
249
250			`unlock_unit (u);`
251			`}`
252
253			`if (status)`
254			`*status = (result < 0 ? -1 : 0);`
255			`}`
256
257
258
259			`/* FTELL intrinsic */`
260
261			`static gfc_offset`
262			`gf_ftell (int unit)`
263			`{`
264			`gfc_unit * u = find_unit (unit);`
265			`if (u == NULL)`
266			`return -1;`
267			`int pos = fbuf_reset (u);`
268			`if (pos != 0)`
269			`sseek (u->s, pos, SEEK_CUR);`
270			`gfc_offset ret = stell (u->s);`
271			`unlock_unit (u);`
272			`return ret;`
273			`}`
274
275			`extern size_t PREFIX(ftell) (int *);`
276			`export_proto_np(PREFIX(ftell));`
277
278			`size_t`
279			`PREFIX(ftell) (int * unit)`
280			`{`
281			`return gf_ftell (*unit);`
282			`}`
283
284			`#define FTELL_SUB(kind) \`
285			`extern void ftell_i ## kind ## _sub (int , GFC_INTEGER_ ## kind ); \`
286			`export_proto(ftell_i ## kind ## _sub); \`
287			`void \`
288			`ftell_i ## kind ## _sub (int * unit, GFC_INTEGER_ ## kind * offset) \`
289			`{ \`
290			`offset = gf_ftell (unit); \`
291			`}`
292
293			`FTELL_SUB(1)`
294			`FTELL_SUB(2)`
295			`FTELL_SUB(4)`
296			`FTELL_SUB(8)`
297
298
299
300			`/* LOGICAL FUNCTION ISATTY(UNIT)`
301			`INTEGER, INTENT(IN) :: UNIT */`
302
303			`extern GFC_LOGICAL_4 isatty_l4 (int *);`
304			`export_proto(isatty_l4);`
305
306			`GFC_LOGICAL_4`
307			`isatty_l4 (int *unit)`
308			`{`
309			`gfc_unit *u;`
310			`GFC_LOGICAL_4 ret = 0;`
311
312			`u = find_unit (*unit);`
313			`if (u != NULL)`
314			`{`
315			`ret = (GFC_LOGICAL_4) stream_isatty (u->s);`
316			`unlock_unit (u);`
317			`}`
318			`return ret;`
319			`}`
320
321
322			`extern GFC_LOGICAL_8 isatty_l8 (int *);`
323			`export_proto(isatty_l8);`
324
325			`GFC_LOGICAL_8`
326			`isatty_l8 (int *unit)`
327			`{`
328			`gfc_unit *u;`
329			`GFC_LOGICAL_8 ret = 0;`
330
331			`u = find_unit (*unit);`
332			`if (u != NULL)`
333			`{`
334			`ret = (GFC_LOGICAL_8) stream_isatty (u->s);`
335			`unlock_unit (u);`
336			`}`
337			`return ret;`
338			`}`
339
340
341			`/* SUBROUTINE TTYNAM(UNIT,NAME)`
342			`INTEGER,SCALAR,INTENT(IN) :: UNIT`
343			`CHARACTER,SCALAR,INTENT(OUT) :: NAME */`
344
345			`extern void ttynam_sub (int , char , gfc_charlen_type);`
346			`export_proto(ttynam_sub);`
347
348			`void`
349			`ttynam_sub (int unit, char name, gfc_charlen_type name_len)`
350			`{`
351			`gfc_unit *u;`
352			`int nlen;`
353			`int err = 1;`
354
355			`u = find_unit (*unit);`
356			`if (u != NULL)`
357			`{`
358			`err = stream_ttyname (u->s, name, name_len);`
359			`if (err == 0)`
360			`{`
361			`nlen = strlen (name);`
362			`memset (&name[nlen], ' ', name_len - nlen);`
363			`}`
364
365			`unlock_unit (u);`
366			`}`
367			`if (err != 0)`
368			`memset (name, ' ', name_len);`
369			`}`
370
371
372			`extern void ttynam (char *, gfc_charlen_type , int);`
373			`export_proto(ttynam);`
374
375			`void`
376			`ttynam (char ** name, gfc_charlen_type * name_len, int unit)`
377			`{`
378			`gfc_unit *u;`
379
380			`u = find_unit (unit);`
381			`if (u != NULL)`
382			`{`
383			`*name = get_mem (TTY_NAME_MAX);`
384			`int err = stream_ttyname (u->s, *name, TTY_NAME_MAX);`
385			`if (err == 0)`
386			`{`
387			`name_len = strlen (name);`
388			`unlock_unit (u);`
389			`return;`
390			`}`
391			`free (*name);`
392			`unlock_unit (u);`
393			`}`
394
395			`*name_len = 0;`
396			`*name = NULL;`
397			`}`