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gcc/libgfortran/io/write.c

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/* Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
Free Software Foundation, Inc.
Contributed by Andy Vaught
Namelist output contributed by Paul Thomas
F2003 I/O support contributed by Jerry DeLisle
This file is part of the GNU Fortran 95 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"
#include <assert.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdbool.h>
#include <errno.h>
#define star_fill(p, n) memset(p, '*', n)
#include "write_float.def"
typedef unsigned char uchar;
/* Write out default char4. */
static void
write_default_char4 (st_parameter_dt *dtp, gfc_char4_t *source,
int src_len, int w_len)
{
char *p;
int j, k = 0;
gfc_char4_t c;
uchar d;
/* Take care of preceding blanks. */
if (w_len > src_len)
{
k = w_len - src_len;
p = write_block (dtp, k);
if (p == NULL)
return;
memset (p, ' ', k);
}
/* Get ready to handle delimiters if needed. */
switch (dtp->u.p.current_unit->delim_status)
{
case DELIM_APOSTROPHE:
d = '\'';
break;
case DELIM_QUOTE:
d = '"';
break;
default:
d = ' ';
break;
}
/* Now process the remaining characters, one at a time. */
for (j = k; j < src_len; j++)
{
c = source[j];
/* Handle delimiters if any. */
if (c == d && d != ' ')
{
p = write_block (dtp, 2);
if (p == NULL)
return;
*p++ = (uchar) c;
}
else
{
p = write_block (dtp, 1);
if (p == NULL)
return;
}
*p = c > 255 ? '?' : (uchar) c;
}
}
/* Write out UTF-8 converted from char4. */
static void
write_utf8_char4 (st_parameter_dt *dtp, gfc_char4_t *source,
int src_len, int w_len)
{
char *p;
int j, k = 0;
gfc_char4_t c;
static const uchar masks[6] = { 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
static const uchar limits[6] = { 0x80, 0xE0, 0xF0, 0xF8, 0xFC, 0xFE };
int nbytes;
uchar buf[6], d, *q;
/* Take care of preceding blanks. */
if (w_len > src_len)
{
k = w_len - src_len;
p = write_block (dtp, k);
if (p == NULL)
return;
memset (p, ' ', k);
}
/* Get ready to handle delimiters if needed. */
switch (dtp->u.p.current_unit->delim_status)
{
case DELIM_APOSTROPHE:
d = '\'';
break;
case DELIM_QUOTE:
d = '"';
break;
default:
d = ' ';
break;
}
/* Now process the remaining characters, one at a time. */
for (j = k; j < src_len; j++)
{
c = source[j];
if (c < 0x80)
{
/* Handle the delimiters if any. */
if (c == d && d != ' ')
{
p = write_block (dtp, 2);
if (p == NULL)
return;
*p++ = (uchar) c;
}
else
{
p = write_block (dtp, 1);
if (p == NULL)
return;
}
*p = (uchar) c;
}
else
{
/* Convert to UTF-8 sequence. */
nbytes = 1;
q = &buf[6];
do
{
*--q = ((c & 0x3F) | 0x80);
c >>= 6;
nbytes++;
}
while (c >= 0x3F || (c & limits[nbytes-1]));
*--q = (c | masks[nbytes-1]);
p = write_block (dtp, nbytes);
if (p == NULL)
return;
while (q < &buf[6])
*p++ = *q++;
}
}
}
void
write_a (st_parameter_dt *dtp, const fnode *f, const char *source, int len)
{
int wlen;
char *p;
wlen = f->u.string.length < 0
|| (f->format == FMT_G && f->u.string.length == 0)
? len : f->u.string.length;
#ifdef HAVE_CRLF
/* If this is formatted STREAM IO convert any embedded line feed characters
to CR_LF on systems that use that sequence for newlines. See F2003
Standard sections 10.6.3 and 9.9 for further information. */
if (is_stream_io (dtp))
{
const char crlf[] = "\r\n";
int i, q, bytes;
q = bytes = 0;
/* Write out any padding if needed. */
if (len < wlen)
{
p = write_block (dtp, wlen - len);
if (p == NULL)
return;
memset (p, ' ', wlen - len);
}
/* Scan the source string looking for '\n' and convert it if found. */
for (i = 0; i < wlen; i++)
{
if (source[i] == '\n')
{
/* Write out the previously scanned characters in the string. */
if (bytes > 0)
{
p = write_block (dtp, bytes);
if (p == NULL)
return;
memcpy (p, &source[q], bytes);
q += bytes;
bytes = 0;
}
/* Write out the CR_LF sequence. */
q++;
p = write_block (dtp, 2);
if (p == NULL)
return;
memcpy (p, crlf, 2);
}
else
bytes++;
}
/* Write out any remaining bytes if no LF was found. */
if (bytes > 0)
{
p = write_block (dtp, bytes);
if (p == NULL)
return;
memcpy (p, &source[q], bytes);
}
}
else
{
#endif
p = write_block (dtp, wlen);
if (p == NULL)
return;
if (wlen < len)
memcpy (p, source, wlen);
else
{
memset (p, ' ', wlen - len);
memcpy (p + wlen - len, source, len);
}
#ifdef HAVE_CRLF
}
#endif
}
/* The primary difference between write_a_char4 and write_a is that we have to
deal with writing from the first byte of the 4-byte character and pay
attention to the most significant bytes. For ENCODING="default" write the
lowest significant byte. If the 3 most significant bytes contain
non-zero values, emit a '?'. For ENCODING="utf-8", convert the UCS-32 value
to the UTF-8 encoded string before writing out. */
void
write_a_char4 (st_parameter_dt *dtp, const fnode *f, const char *source, int len)
{
int wlen;
gfc_char4_t *q;
wlen = f->u.string.length < 0
|| (f->format == FMT_G && f->u.string.length == 0)
? len : f->u.string.length;
q = (gfc_char4_t *) source;
#ifdef HAVE_CRLF
/* If this is formatted STREAM IO convert any embedded line feed characters
to CR_LF on systems that use that sequence for newlines. See F2003
Standard sections 10.6.3 and 9.9 for further information. */
if (is_stream_io (dtp))
{
const gfc_char4_t crlf[] = {0x000d,0x000a};
int i, bytes;
gfc_char4_t *qq;
bytes = 0;
/* Write out any padding if needed. */
if (len < wlen)
{
char *p;
p = write_block (dtp, wlen - len);
if (p == NULL)
return;
memset (p, ' ', wlen - len);
}
/* Scan the source string looking for '\n' and convert it if found. */
qq = (gfc_char4_t *) source;
for (i = 0; i < wlen; i++)
{
if (qq[i] == '\n')
{
/* Write out the previously scanned characters in the string. */
if (bytes > 0)
{
if (dtp->u.p.current_unit->flags.encoding == ENCODING_UTF8)
write_utf8_char4 (dtp, q, bytes, 0);
else
write_default_char4 (dtp, q, bytes, 0);
bytes = 0;
}
/* Write out the CR_LF sequence. */
write_default_char4 (dtp, crlf, 2, 0);
}
else
bytes++;
}
/* Write out any remaining bytes if no LF was found. */
if (bytes > 0)
{
if (dtp->u.p.current_unit->flags.encoding == ENCODING_UTF8)
write_utf8_char4 (dtp, q, bytes, 0);
else
write_default_char4 (dtp, q, bytes, 0);
}
}
else
{
#endif
if (dtp->u.p.current_unit->flags.encoding == ENCODING_UTF8)
write_utf8_char4 (dtp, q, len, wlen);
else
write_default_char4 (dtp, q, len, wlen);
#ifdef HAVE_CRLF
}
#endif
}
static GFC_INTEGER_LARGEST
extract_int (const void *p, int len)
{
GFC_INTEGER_LARGEST i = 0;
if (p == NULL)
return i;
switch (len)
{
case 1:
{
GFC_INTEGER_1 tmp;
memcpy ((void *) &tmp, p, len);
i = tmp;
}
break;
case 2:
{
GFC_INTEGER_2 tmp;
memcpy ((void *) &tmp, p, len);
i = tmp;
}
break;
case 4:
{
GFC_INTEGER_4 tmp;
memcpy ((void *) &tmp, p, len);
i = tmp;
}
break;
case 8:
{
GFC_INTEGER_8 tmp;
memcpy ((void *) &tmp, p, len);
i = tmp;
}
break;
#ifdef HAVE_GFC_INTEGER_16
case 16:
{
GFC_INTEGER_16 tmp;
memcpy ((void *) &tmp, p, len);
i = tmp;
}
break;
#endif
default:
internal_error (NULL, "bad integer kind");
}
return i;
}
static GFC_UINTEGER_LARGEST
extract_uint (const void *p, int len)
{
GFC_UINTEGER_LARGEST i = 0;
if (p == NULL)
return i;
switch (len)
{
case 1:
{
GFC_INTEGER_1 tmp;
memcpy ((void *) &tmp, p, len);
i = (GFC_UINTEGER_1) tmp;
}
break;
case 2:
{
GFC_INTEGER_2 tmp;
memcpy ((void *) &tmp, p, len);
i = (GFC_UINTEGER_2) tmp;
}
break;
case 4:
{
GFC_INTEGER_4 tmp;
memcpy ((void *) &tmp, p, len);
i = (GFC_UINTEGER_4) tmp;
}
break;
case 8:
{
GFC_INTEGER_8 tmp;
memcpy ((void *) &tmp, p, len);
i = (GFC_UINTEGER_8) tmp;
}
break;
#ifdef HAVE_GFC_INTEGER_16
case 16:
{
GFC_INTEGER_16 tmp;
memcpy ((void *) &tmp, p, len);
i = (GFC_UINTEGER_16) tmp;
}
break;
#endif
default:
internal_error (NULL, "bad integer kind");
}
return i;
}
void
write_l (st_parameter_dt *dtp, const fnode *f, char *source, int len)
{
char *p;
int wlen;
GFC_INTEGER_LARGEST n;
wlen = (f->format == FMT_G && f->u.w == 0) ? 1 : f->u.w;
p = write_block (dtp, wlen);
if (p == NULL)
return;
memset (p, ' ', wlen - 1);
n = extract_int (source, len);
p[wlen - 1] = (n) ? 'T' : 'F';
}
static void
write_int (st_parameter_dt *dtp, const fnode *f, const char *source, int len,
const char *(*conv) (GFC_UINTEGER_LARGEST, char *, size_t))
{
GFC_UINTEGER_LARGEST n = 0;
int w, m, digits, nzero, nblank;
char *p;
const char *q;
char itoa_buf[GFC_BTOA_BUF_SIZE];
w = f->u.integer.w;
m = f->u.integer.m;
n = extract_uint (source, len);
/* Special case: */
if (m == 0 && n == 0)
{
if (w == 0)
w = 1;
p = write_block (dtp, w);
if (p == NULL)
return;
memset (p, ' ', w);
goto done;
}
q = conv (n, itoa_buf, sizeof (itoa_buf));
digits = strlen (q);
/* Select a width if none was specified. The idea here is to always
print something. */
if (w == 0)
w = ((digits < m) ? m : digits);
p = write_block (dtp, w);
if (p == NULL)
return;
nzero = 0;
if (digits < m)
nzero = m - digits;
/* See if things will work. */
nblank = w - (nzero + digits);
if (nblank < 0)
{
star_fill (p, w);
goto done;
}
if (!dtp->u.p.no_leading_blank)
{
memset (p, ' ', nblank);
p += nblank;
memset (p, '0', nzero);
p += nzero;
memcpy (p, q, digits);
}
else
{
memset (p, '0', nzero);
p += nzero;
memcpy (p, q, digits);
p += digits;
memset (p, ' ', nblank);
dtp->u.p.no_leading_blank = 0;
}
done:
return;
}
static void
write_decimal (st_parameter_dt *dtp, const fnode *f, const char *source,
int len,
const char *(*conv) (GFC_INTEGER_LARGEST, char *, size_t))
{
GFC_INTEGER_LARGEST n = 0;
int w, m, digits, nsign, nzero, nblank;
char *p;
const char *q;
sign_t sign;
char itoa_buf[GFC_BTOA_BUF_SIZE];
w = f->u.integer.w;
m = f->format == FMT_G ? -1 : f->u.integer.m;
n = extract_int (source, len);
/* Special case: */
if (m == 0 && n == 0)
{
if (w == 0)
w = 1;
p = write_block (dtp, w);
if (p == NULL)
return;
memset (p, ' ', w);
goto done;
}
sign = calculate_sign (dtp, n < 0);
if (n < 0)
n = -n;
nsign = sign == S_NONE ? 0 : 1;
/* conv calls itoa which sets the negative sign needed
by write_integer. The sign '+' or '-' is set below based on sign
calculated above, so we just point past the sign in the string
before proceeding to avoid double signs in corner cases.
(see PR38504) */
q = conv (n, itoa_buf, sizeof (itoa_buf));
if (*q == '-')
q++;
digits = strlen (q);
/* Select a width if none was specified. The idea here is to always
print something. */
if (w == 0)
w = ((digits < m) ? m : digits) + nsign;
p = write_block (dtp, w);
if (p == NULL)
return;
nzero = 0;
if (digits < m)
nzero = m - digits;
/* See if things will work. */
nblank = w - (nsign + nzero + digits);
if (nblank < 0)
{
star_fill (p, w);
goto done;
}
memset (p, ' ', nblank);
p += nblank;
switch (sign)
{
case S_PLUS:
*p++ = '+';
break;
case S_MINUS:
*p++ = '-';
break;
case S_NONE:
break;
}
memset (p, '0', nzero);
p += nzero;
memcpy (p, q, digits);
done:
return;
}
/* Convert unsigned octal to ascii. */
static const char *
otoa (GFC_UINTEGER_LARGEST n, char *buffer, size_t len)
{
char *p;
assert (len >= GFC_OTOA_BUF_SIZE);
if (n == 0)
return "0";
p = buffer + GFC_OTOA_BUF_SIZE - 1;
*p = '\0';
while (n != 0)
{
*--p = '0' + (n & 7);
n >>= 3;
}
return p;
}
/* Convert unsigned binary to ascii. */
static const char *
btoa (GFC_UINTEGER_LARGEST n, char *buffer, size_t len)
{
char *p;
assert (len >= GFC_BTOA_BUF_SIZE);
if (n == 0)
return "0";
p = buffer + GFC_BTOA_BUF_SIZE - 1;
*p = '\0';
while (n != 0)
{
*--p = '0' + (n & 1);
n >>= 1;
}
return p;
}
/* gfc_itoa()-- Integer to decimal conversion.
The itoa function is a widespread non-standard extension to standard
C, often declared in <stdlib.h>. Even though the itoa defined here
is a static function we take care not to conflict with any prior
non-static declaration. Hence the 'gfc_' prefix, which is normally
reserved for functions with external linkage. */
static const char *
gfc_itoa (GFC_INTEGER_LARGEST n, char *buffer, size_t len)
{
int negative;
char *p;
GFC_UINTEGER_LARGEST t;
assert (len >= GFC_ITOA_BUF_SIZE);
if (n == 0)
return "0";
negative = 0;
t = n;
if (n < 0)
{
negative = 1;
t = -n; /*must use unsigned to protect from overflow*/
}
p = buffer + GFC_ITOA_BUF_SIZE - 1;
*p = '\0';
while (t != 0)
{
*--p = '0' + (t % 10);
t /= 10;
}
if (negative)
*--p = '-';
return p;
}
void
write_i (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_decimal (dtp, f, p, len, (void *) gfc_itoa);
}
void
write_b (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_int (dtp, f, p, len, btoa);
}
void
write_o (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_int (dtp, f, p, len, otoa);
}
void
write_z (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_int (dtp, f, p, len, gfc_xtoa);
}
void
write_d (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_float (dtp, f, p, len);
}
void
write_e (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_float (dtp, f, p, len);
}
void
write_f (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_float (dtp, f, p, len);
}
void
write_en (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_float (dtp, f, p, len);
}
void
write_es (st_parameter_dt *dtp, const fnode *f, const char *p, int len)
{
write_float (dtp, f, p, len);
}
/* Take care of the X/TR descriptor. */
void
write_x (st_parameter_dt *dtp, int len, int nspaces)
{
char *p;
p = write_block (dtp, len);
if (p == NULL)
return;
if (nspaces > 0 && len - nspaces >= 0)
memset (&p[len - nspaces], ' ', nspaces);
}
/* List-directed writing. */
/* Write a single character to the output. Returns nonzero if
something goes wrong. */
static int
write_char (st_parameter_dt *dtp, char c)
{
char *p;
p = write_block (dtp, 1);
if (p == NULL)
return 1;
*p = c;
return 0;
}
/* Write a list-directed logical value. */
static void
write_logical (st_parameter_dt *dtp, const char *source, int length)
{
write_char (dtp, extract_int (source, length) ? 'T' : 'F');
}
/* Write a list-directed integer value. */
static void
write_integer (st_parameter_dt *dtp, const char *source, int length)
{
char *p;
const char *q;
int digits;
int width;
char itoa_buf[GFC_ITOA_BUF_SIZE];
q = gfc_itoa (extract_int (source, length), itoa_buf, sizeof (itoa_buf));
switch (length)
{
case 1:
width = 4;
break;
case 2:
width = 6;
break;
case 4:
width = 11;
break;
case 8:
width = 20;
break;
default:
width = 0;
break;
}
digits = strlen (q);
if (width < digits)
width = digits;
p = write_block (dtp, width);
if (p == NULL)
return;
if (dtp->u.p.no_leading_blank)
{
memcpy (p, q, digits);
memset (p + digits, ' ', width - digits);
}
else
{
memset (p, ' ', width - digits);
memcpy (p + width - digits, q, digits);
}
}
/* Write a list-directed string. We have to worry about delimiting
the strings if the file has been opened in that mode. */
static void
write_character (st_parameter_dt *dtp, const char *source, int kind, int length)
{
int i, extra;
char *p, d;
switch (dtp->u.p.current_unit->delim_status)
{
case DELIM_APOSTROPHE:
d = '\'';
break;
case DELIM_QUOTE:
d = '"';
break;
default:
d = ' ';
break;
}
if (kind == 1)
{
if (d == ' ')
extra = 0;
else
{
extra = 2;
for (i = 0; i < length; i++)
if (source[i] == d)
extra++;
}
p = write_block (dtp, length + extra);
if (p == NULL)
return;
if (d == ' ')
memcpy (p, source, length);
else
{
*p++ = d;
for (i = 0; i < length; i++)
{
*p++ = source[i];
if (source[i] == d)
*p++ = d;
}
*p = d;
}
}
else
{
if (d == ' ')
{
if (dtp->u.p.current_unit->flags.encoding == ENCODING_UTF8)
write_utf8_char4 (dtp, (gfc_char4_t *) source, length, 0);
else
write_default_char4 (dtp, (gfc_char4_t *) source, length, 0);
}
else
{
p = write_block (dtp, 1);
*p = d;
if (dtp->u.p.current_unit->flags.encoding == ENCODING_UTF8)
write_utf8_char4 (dtp, (gfc_char4_t *) source, length, 0);
else
write_default_char4 (dtp, (gfc_char4_t *) source, length, 0);
p = write_block (dtp, 1);
*p = d;
}
}
}
/* Set an fnode to default format. */
static void
set_fnode_default (st_parameter_dt *dtp, fnode *f, int length)
{
f->format = FMT_G;
switch (length)
{
case 4:
f->u.real.w = 15;
f->u.real.d = 8;
f->u.real.e = 2;
break;
case 8:
f->u.real.w = 25;
f->u.real.d = 17;
f->u.real.e = 3;
break;
case 10:
f->u.real.w = 29;
f->u.real.d = 20;
f->u.real.e = 4;
break;
case 16:
f->u.real.w = 44;
f->u.real.d = 35;
f->u.real.e = 4;
break;
default:
internal_error (&dtp->common, "bad real kind");
break;
}
}
/* Output a real number with default format.
This is 1PG14.7E2 for REAL(4), 1PG23.15E3 for REAL(8),
1PG28.19E4 for REAL(10) and 1PG43.34E4 for REAL(16). */
void
write_real (st_parameter_dt *dtp, const char *source, int length)
{
fnode f ;
int org_scale = dtp->u.p.scale_factor;
dtp->u.p.scale_factor = 1;
set_fnode_default (dtp, &f, length);
write_float (dtp, &f, source , length);
dtp->u.p.scale_factor = org_scale;
}
void
write_real_g0 (st_parameter_dt *dtp, const char *source, int length, int d)
{
fnode f ;
set_fnode_default (dtp, &f, length);
if (d > 0)
f.u.real.d = d;
dtp->u.p.g0_no_blanks = 1;
write_float (dtp, &f, source , length);
dtp->u.p.g0_no_blanks = 0;
}
static void
write_complex (st_parameter_dt *dtp, const char *source, int kind, size_t size)
{
char semi_comma =
dtp->u.p.current_unit->decimal_status == DECIMAL_POINT ? ',' : ';';
if (write_char (dtp, '('))
return;
write_real (dtp, source, kind);
if (write_char (dtp, semi_comma))
return;
write_real (dtp, source + size / 2, kind);
write_char (dtp, ')');
}
/* Write the separator between items. */
static void
write_separator (st_parameter_dt *dtp)
{
char *p;
p = write_block (dtp, options.separator_len);
if (p == NULL)
return;
memcpy (p, options.separator, options.separator_len);
}
/* Write an item with list formatting.
TODO: handle skipping to the next record correctly, particularly
with strings. */
static void
list_formatted_write_scalar (st_parameter_dt *dtp, bt type, void *p, int kind,
size_t size)
{
if (dtp->u.p.current_unit == NULL)
return;
if (dtp->u.p.first_item)
{
dtp->u.p.first_item = 0;
write_char (dtp, ' ');
}
else
{
if (type != BT_CHARACTER || !dtp->u.p.char_flag ||
dtp->u.p.current_unit->delim_status != DELIM_NONE)
write_separator (dtp);
}
switch (type)
{
case BT_INTEGER:
write_integer (dtp, p, kind);
break;
case BT_LOGICAL:
write_logical (dtp, p, kind);
break;
case BT_CHARACTER:
write_character (dtp, p, kind, size);
break;
case BT_REAL:
write_real (dtp, p, kind);
break;
case BT_COMPLEX:
write_complex (dtp, p, kind, size);
break;
default:
internal_error (&dtp->common, "list_formatted_write(): Bad type");
}
dtp->u.p.char_flag = (type == BT_CHARACTER);
}
void
list_formatted_write (st_parameter_dt *dtp, bt type, void *p, int kind,
size_t size, size_t nelems)
{
size_t elem;
char *tmp;
size_t stride = type == BT_CHARACTER ?
size * GFC_SIZE_OF_CHAR_KIND(kind) : size;
tmp = (char *) p;
/* Big loop over all the elements. */
for (elem = 0; elem < nelems; elem++)
{
dtp->u.p.item_count++;
list_formatted_write_scalar (dtp, type, tmp + elem * stride, kind, size);
}
}
/* NAMELIST OUTPUT
nml_write_obj writes a namelist object to the output stream. It is called
recursively for derived type components:
obj = is the namelist_info for the current object.
offset = the offset relative to the address held by the object for
derived type arrays.
base = is the namelist_info of the derived type, when obj is a
component.
base_name = the full name for a derived type, including qualifiers
if any.
The returned value is a pointer to the object beyond the last one
accessed, including nested derived types. Notice that the namelist is
a linear linked list of objects, including derived types and their
components. A tree, of sorts, is implied by the compound names of
the derived type components and this is how this function recurses through
the list. */
/* A generous estimate of the number of characters needed to print
repeat counts and indices, including commas, asterices and brackets. */
#define NML_DIGITS 20
static void
namelist_write_newline (st_parameter_dt *dtp)
{
if (!is_internal_unit (dtp))
{
#ifdef HAVE_CRLF
write_character (dtp, "\r\n", 1, 2);
#else
write_character (dtp, "\n", 1, 1);
#endif
return;
}
if (is_array_io (dtp))
{
gfc_offset record;
int finished, length;
length = (int) dtp->u.p.current_unit->bytes_left;
/* Now that the current record has been padded out,
determine where the next record in the array is. */
record = next_array_record (dtp, dtp->u.p.current_unit->ls,
&finished);
if (finished)
dtp->u.p.current_unit->endfile = AT_ENDFILE;
else
{
/* Now seek to this record */
record = record * dtp->u.p.current_unit->recl;
if (sseek (dtp->u.p.current_unit->s, record, SEEK_SET) < 0)
{
generate_error (&dtp->common, LIBERROR_INTERNAL_UNIT, NULL);
return;
}
dtp->u.p.current_unit->bytes_left = dtp->u.p.current_unit->recl;
}
}
else
write_character (dtp, " ", 1, 1);
}
static namelist_info *
nml_write_obj (st_parameter_dt *dtp, namelist_info * obj, index_type offset,
namelist_info * base, char * base_name)
{
int rep_ctr;
int num;
int nml_carry;
int len;
index_type obj_size;
index_type nelem;
size_t dim_i;
size_t clen;
index_type elem_ctr;
size_t obj_name_len;
void * p ;
char cup;
char * obj_name;
char * ext_name;
char rep_buff[NML_DIGITS];
namelist_info * cmp;
namelist_info * retval = obj->next;
size_t base_name_len;
size_t base_var_name_len;
size_t tot_len;
unit_delim tmp_delim;
/* Set the character to be used to separate values
to a comma or semi-colon. */
char semi_comma =
dtp->u.p.current_unit->decimal_status == DECIMAL_POINT ? ',' : ';';
/* Write namelist variable names in upper case. If a derived type,
nothing is output. If a component, base and base_name are set. */
if (obj->type != GFC_DTYPE_DERIVED)
{
namelist_write_newline (dtp);
write_character (dtp, " ", 1, 1);
len = 0;
if (base)
{
len = strlen (base->var_name);
base_name_len = strlen (base_name);
for (dim_i = 0; dim_i < base_name_len; dim_i++)
{
cup = toupper (base_name[dim_i]);
write_character (dtp, &cup, 1, 1);
}
}
clen = strlen (obj->var_name);
for (dim_i = len; dim_i < clen; dim_i++)
{
cup = toupper (obj->var_name[dim_i]);
write_character (dtp, &cup, 1, 1);
}
write_character (dtp, "=", 1, 1);
}
/* Counts the number of data output on a line, including names. */
num = 1;
len = obj->len;
switch (obj->type)
{
case GFC_DTYPE_REAL:
obj_size = size_from_real_kind (len);
break;
case GFC_DTYPE_COMPLEX:
obj_size = size_from_complex_kind (len);
break;
case GFC_DTYPE_CHARACTER:
obj_size = obj->string_length;
break;
default:
obj_size = len;
}
if (obj->var_rank)
obj_size = obj->size;
/* Set the index vector and count the number of elements. */
nelem = 1;
for (dim_i = 0; dim_i < (size_t) obj->var_rank; dim_i++)
{
obj->ls[dim_i].idx = GFC_DESCRIPTOR_LBOUND(obj, dim_i);
nelem = nelem * GFC_DESCRIPTOR_EXTENT (obj, dim_i);
}
/* Main loop to output the data held in the object. */
rep_ctr = 1;
for (elem_ctr = 0; elem_ctr < nelem; elem_ctr++)
{
/* Build the pointer to the data value. The offset is passed by
recursive calls to this function for arrays of derived types.
Is NULL otherwise. */
p = (void *)(obj->mem_pos + elem_ctr * obj_size);
p += offset;
/* Check for repeat counts of intrinsic types. */
if ((elem_ctr < (nelem - 1)) &&
(obj->type != GFC_DTYPE_DERIVED) &&
!memcmp (p, (void*)(p + obj_size ), obj_size ))
{
rep_ctr++;
}
/* Execute a repeated output. Note the flag no_leading_blank that
is used in the functions used to output the intrinsic types. */
else
{
if (rep_ctr > 1)
{
sprintf(rep_buff, " %d*", rep_ctr);
write_character (dtp, rep_buff, 1, strlen (rep_buff));
dtp->u.p.no_leading_blank = 1;
}
num++;
/* Output the data, if an intrinsic type, or recurse into this
routine to treat derived types. */
switch (obj->type)
{
case GFC_DTYPE_INTEGER:
write_integer (dtp, p, len);
break;
case GFC_DTYPE_LOGICAL:
write_logical (dtp, p, len);
break;
case GFC_DTYPE_CHARACTER:
tmp_delim = dtp->u.p.current_unit->delim_status;
if (dtp->u.p.nml_delim == '"')
dtp->u.p.current_unit->delim_status = DELIM_QUOTE;
if (dtp->u.p.nml_delim == '\'')
dtp->u.p.current_unit->delim_status = DELIM_APOSTROPHE;
write_character (dtp, p, 1, obj->string_length);
dtp->u.p.current_unit->delim_status = tmp_delim;
break;
case GFC_DTYPE_REAL:
write_real (dtp, p, len);
break;
case GFC_DTYPE_COMPLEX:
dtp->u.p.no_leading_blank = 0;
num++;
write_complex (dtp, p, len, obj_size);
break;
case GFC_DTYPE_DERIVED:
/* To treat a derived type, we need to build two strings:
ext_name = the name, including qualifiers that prepends
component names in the output - passed to
nml_write_obj.
obj_name = the derived type name with no qualifiers but %
appended. This is used to identify the
components. */
/* First ext_name => get length of all possible components */
base_name_len = base_name ? strlen (base_name) : 0;
base_var_name_len = base ? strlen (base->var_name) : 0;
ext_name = (char*)get_mem ( base_name_len
+ base_var_name_len
+ strlen (obj->var_name)
+ obj->var_rank * NML_DIGITS
+ 1);
memcpy (ext_name, base_name, base_name_len);
clen = strlen (obj->var_name + base_var_name_len);
memcpy (ext_name + base_name_len,
obj->var_name + base_var_name_len, clen);
/* Append the qualifier. */
tot_len = base_name_len + clen;
for (dim_i = 0; dim_i < (size_t) obj->var_rank; dim_i++)
{
if (!dim_i)
{
ext_name[tot_len] = '(';
tot_len++;
}
sprintf (ext_name + tot_len, "%d", (int) obj->ls[dim_i].idx);
tot_len += strlen (ext_name + tot_len);
ext_name[tot_len] = ((int) dim_i == obj->var_rank - 1) ? ')' : ',';
tot_len++;
}
ext_name[tot_len] = '\0';
/* Now obj_name. */
obj_name_len = strlen (obj->var_name) + 1;
obj_name = get_mem (obj_name_len+1);
memcpy (obj_name, obj->var_name, obj_name_len-1);
memcpy (obj_name + obj_name_len-1, "%", 2);
/* Now loop over the components. Update the component pointer
with the return value from nml_write_obj => this loop jumps
past nested derived types. */
for (cmp = obj->next;
cmp && !strncmp (cmp->var_name, obj_name, obj_name_len);
cmp = retval)
{
retval = nml_write_obj (dtp, cmp,
(index_type)(p - obj->mem_pos),
obj, ext_name);
}
free_mem (obj_name);
free_mem (ext_name);
goto obj_loop;
default:
internal_error (&dtp->common, "Bad type for namelist write");
}
/* Reset the leading blank suppression, write a comma (or semi-colon)
and, if 5 values have been output, write a newline and advance
to column 2. Reset the repeat counter. */
dtp->u.p.no_leading_blank = 0;
write_character (dtp, &semi_comma, 1, 1);
if (num > 5)
{
num = 0;
namelist_write_newline (dtp);
write_character (dtp, " ", 1, 1);
}
rep_ctr = 1;
}
/* Cycle through and increment the index vector. */
obj_loop:
nml_carry = 1;
for (dim_i = 0; nml_carry && (dim_i < (size_t) obj->var_rank); dim_i++)
{
obj->ls[dim_i].idx += nml_carry ;
nml_carry = 0;
if (obj->ls[dim_i].idx > (ssize_t) GFC_DESCRIPTOR_UBOUND(obj,dim_i))
{
obj->ls[dim_i].idx = GFC_DESCRIPTOR_LBOUND(obj,dim_i);
nml_carry = 1;
}
}
}
/* Return a pointer beyond the furthest object accessed. */
return retval;
}
/* This is the entry function for namelist writes. It outputs the name
of the namelist and iterates through the namelist by calls to
nml_write_obj. The call below has dummys in the arguments used in
the treatment of derived types. */
void
namelist_write (st_parameter_dt *dtp)
{
namelist_info * t1, *t2, *dummy = NULL;
index_type i;
index_type dummy_offset = 0;
char c;
char * dummy_name = NULL;
unit_delim tmp_delim = DELIM_UNSPECIFIED;
/* Set the delimiter for namelist output. */
tmp_delim = dtp->u.p.current_unit->delim_status;
dtp->u.p.nml_delim = tmp_delim == DELIM_APOSTROPHE ? '\'' : '"';
/* Temporarily disable namelist delimters. */
dtp->u.p.current_unit->delim_status = DELIM_NONE;
write_character (dtp, "&", 1, 1);
/* Write namelist name in upper case - f95 std. */
for (i = 0 ;i < dtp->namelist_name_len ;i++ )
{
c = toupper (dtp->namelist_name[i]);
write_character (dtp, &c, 1 ,1);
}
if (dtp->u.p.ionml != NULL)
{
t1 = dtp->u.p.ionml;
while (t1 != NULL)
{
t2 = t1;
t1 = nml_write_obj (dtp, t2, dummy_offset, dummy, dummy_name);
}
}
namelist_write_newline (dtp);
write_character (dtp, " /", 1, 2);
/* Restore the original delimiter. */
dtp->u.p.current_unit->delim_status = tmp_delim;
}
#undef NML_DIGITS
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