2008-05-14 23:51:27 +02:00
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/* String intrinsics helper functions.
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Copyright 2002, 2005, 2007, 2008 Free Software Foundation, Inc.
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This file is part of the GNU Fortran runtime library (libgfortran).
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Libgfortran is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU General Public License, the
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Free Software Foundation gives you unlimited permission to link the
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compiled version of this file into combinations with other programs,
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and to distribute those combinations without any restriction coming
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from the use of this file. (The General Public License restrictions
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do apply in other respects; for example, they cover modification of
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the file, and distribution when not linked into a combine
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executable.)
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Libgfortran is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with libgfortran; see the file COPYING. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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/* Rename the functions. */
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#define concat_string SUFFIX(concat_string)
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#define string_len_trim SUFFIX(string_len_trim)
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#define adjustl SUFFIX(adjustl)
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#define adjustr SUFFIX(adjustr)
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#define string_index SUFFIX(string_index)
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#define string_scan SUFFIX(string_scan)
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#define string_verify SUFFIX(string_verify)
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#define string_trim SUFFIX(string_trim)
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#define string_minmax SUFFIX(string_minmax)
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#define zero_length_string SUFFIX(zero_length_string)
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#define compare_string SUFFIX(compare_string)
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/* The prototypes. */
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extern void concat_string (gfc_charlen_type, CHARTYPE *,
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gfc_charlen_type, const CHARTYPE *,
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gfc_charlen_type, const CHARTYPE *);
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export_proto(concat_string);
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extern gfc_charlen_type string_len_trim (gfc_charlen_type, const CHARTYPE *);
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export_proto(string_len_trim);
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extern void adjustl (CHARTYPE *, gfc_charlen_type, const CHARTYPE *);
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export_proto(adjustl);
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extern void adjustr (CHARTYPE *, gfc_charlen_type, const CHARTYPE *);
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export_proto(adjustr);
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extern gfc_charlen_type string_index (gfc_charlen_type, const CHARTYPE *,
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gfc_charlen_type, const CHARTYPE *,
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GFC_LOGICAL_4);
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export_proto(string_index);
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extern gfc_charlen_type string_scan (gfc_charlen_type, const CHARTYPE *,
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gfc_charlen_type, const CHARTYPE *,
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GFC_LOGICAL_4);
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export_proto(string_scan);
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extern gfc_charlen_type string_verify (gfc_charlen_type, const CHARTYPE *,
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gfc_charlen_type, const CHARTYPE *,
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GFC_LOGICAL_4);
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export_proto(string_verify);
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extern void string_trim (gfc_charlen_type *, CHARTYPE **, gfc_charlen_type,
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const CHARTYPE *);
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export_proto(string_trim);
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extern void string_minmax (gfc_charlen_type *, CHARTYPE **, int, int, ...);
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export_proto(string_minmax);
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/* Use for functions which can return a zero-length string. */
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static CHARTYPE zero_length_string = 0;
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/* Strings of unequal length are extended with pad characters. */
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int
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compare_string (gfc_charlen_type len1, const CHARTYPE *s1,
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gfc_charlen_type len2, const CHARTYPE *s2)
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{
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const UCHARTYPE *s;
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gfc_charlen_type len;
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int res;
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res = memcmp (s1, s2, ((len1 < len2) ? len1 : len2) * sizeof (CHARTYPE));
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if (res != 0)
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return res;
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if (len1 == len2)
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return 0;
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if (len1 < len2)
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{
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len = len2 - len1;
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s = (UCHARTYPE *) &s2[len1];
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res = -1;
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}
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else
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{
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len = len1 - len2;
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s = (UCHARTYPE *) &s1[len2];
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res = 1;
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}
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while (len--)
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{
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if (*s != ' ')
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{
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if (*s > ' ')
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return res;
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else
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return -res;
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}
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s++;
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}
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return 0;
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}
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iexport(compare_string);
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/* The destination and source should not overlap. */
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void
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concat_string (gfc_charlen_type destlen, CHARTYPE * dest,
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gfc_charlen_type len1, const CHARTYPE * s1,
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gfc_charlen_type len2, const CHARTYPE * s2)
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{
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if (len1 >= destlen)
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{
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memcpy (dest, s1, destlen * sizeof (CHARTYPE));
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return;
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}
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memcpy (dest, s1, len1 * sizeof (CHARTYPE));
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dest += len1;
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destlen -= len1;
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if (len2 >= destlen)
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{
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memcpy (dest, s2, destlen * sizeof (CHARTYPE));
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return;
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}
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memcpy (dest, s2, len2 * sizeof (CHARTYPE));
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MEMSET (&dest[len2], ' ', destlen - len2);
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}
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/* Return string with all trailing blanks removed. */
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void
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string_trim (gfc_charlen_type *len, CHARTYPE **dest, gfc_charlen_type slen,
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const CHARTYPE *src)
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{
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2009-03-28 16:18:59 +01:00
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*len = string_len_trim (slen, src);
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2008-05-14 23:51:27 +02:00
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if (*len == 0)
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*dest = &zero_length_string;
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else
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{
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/* Allocate space for result string. */
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*dest = internal_malloc_size (*len * sizeof (CHARTYPE));
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/* Copy string if necessary. */
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memcpy (*dest, src, *len * sizeof (CHARTYPE));
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}
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}
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/* The length of a string not including trailing blanks. */
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gfc_charlen_type
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string_len_trim (gfc_charlen_type len, const CHARTYPE *s)
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{
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2009-03-28 16:18:59 +01:00
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const gfc_charlen_type long_len = (gfc_charlen_type) sizeof (unsigned long);
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2008-05-14 23:51:27 +02:00
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gfc_charlen_type i;
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2009-03-28 16:18:59 +01:00
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i = len - 1;
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/* If we've got the standard (KIND=1) character type, we scan the string in
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long word chunks to speed it up (until a long word is hit that does not
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consist of ' 's). */
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if (sizeof (CHARTYPE) == 1 && i >= long_len)
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2008-05-14 23:51:27 +02:00
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{
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2009-03-28 16:18:59 +01:00
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int starting;
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unsigned long blank_longword;
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/* Handle the first characters until we're aligned on a long word
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boundary. Actually, s + i + 1 must be properly aligned, because
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s + i will be the last byte of a long word read. */
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starting = ((unsigned long) (s + i + 1)) % long_len;
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i -= starting;
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for (; starting > 0; --starting)
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if (s[i + starting] != ' ')
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return i + starting + 1;
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/* Handle the others in a batch until first non-blank long word is
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found. Here again, s + i is the last byte of the current chunk,
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to it starts at s + i - sizeof (long) + 1. */
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#if __SIZEOF_LONG__ == 4
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blank_longword = 0x20202020L;
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#elif __SIZEOF_LONG__ == 8
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blank_longword = 0x2020202020202020L;
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#else
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#error Invalid size of long!
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#endif
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while (i >= long_len)
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{
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i -= long_len;
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if (*((unsigned long*) (s + i + 1)) != blank_longword)
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{
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i += long_len;
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break;
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}
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}
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/* Now continue for the last characters with naive approach below. */
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assert (i >= 0);
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2008-05-14 23:51:27 +02:00
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}
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2009-03-28 16:18:59 +01:00
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/* Simply look for the first non-blank character. */
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while (i >= 0 && s[i] == ' ')
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--i;
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2008-05-14 23:51:27 +02:00
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return i + 1;
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}
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/* Find a substring within a string. */
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gfc_charlen_type
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string_index (gfc_charlen_type slen, const CHARTYPE *str,
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gfc_charlen_type sslen, const CHARTYPE *sstr,
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GFC_LOGICAL_4 back)
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{
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gfc_charlen_type start, last, delta, i;
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if (sslen == 0)
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re PR fortran/36319 (Segfault with wide characters in DATA)
PR fortran/36319
* intrinsic.c (gfc_convert_chartype): Don't mark conversion
function as pure.
* trans-array.c (gfc_trans_array_ctor_element): Divide element
size by the size of one character to obtain length.
* iresolve.c (gfc_resolve_cshift): Call the _char4 variant when
appropriate.
(gfc_resolve_eoshift): Likewise.
* trans-intrinsic.c (gfc_conv_intrinsic_ctime): Minor beautification.
(gfc_conv_intrinsic_fdate): Minor beautification.
(gfc_conv_intrinsic_ttynam): Minor beautification.
(gfc_conv_intrinsic_minmax_char): Allow all character kinds.
(size_of_string_in_bytes): New function.
(gfc_conv_intrinsic_size): Call size_of_string_in_bytes for
character expressions.
(gfc_conv_intrinsic_sizeof): Likewise.
(gfc_conv_intrinsic_array_transfer): Likewise.
(gfc_conv_intrinsic_trim): Allow all character kinds. Minor
beautification.
(gfc_conv_intrinsic_repeat): Fix comment typo.
* simplify.c (gfc_convert_char_constant): Take care of conversion
of array constructors.
* intrinsics/string_intrinsics_inc.c (string_index): Return
correct value for zero-length substring.
* intrinsics/cshift0.c: Add _char4 variant.
* intrinsics/eoshift0.c (eoshift0): Allow filler to be a pattern
wider than a single byte. Add _char4 variant and use above
functionality.
* intrinsics/eoshift2.c (eoshift2): Likewise.
* m4/eoshift1.m4: Likewise.
* m4/eoshift3.m4: Likewise.
* m4/cshift1.m4: Add _char4 variants.
* gfortran.map (GFORTRAN_1.1): Add _gfortran_cshift0_1_char4,
_gfortran_cshift0_2_char4, _gfortran_cshift0_4_char4,
_gfortran_cshift0_8_char4, _gfortran_cshift1_16_char4,
_gfortran_cshift1_4_char4, _gfortran_cshift1_8_char4,
_gfortran_eoshift0_1_char4, _gfortran_eoshift0_2_char4,
_gfortran_eoshift0_4_char4, _gfortran_eoshift0_8_char4,
_gfortran_eoshift1_16_char4, _gfortran_eoshift1_4_char4,
_gfortran_eoshift1_8_char4, _gfortran_eoshift2_1_char4,
_gfortran_eoshift2_2_char4, _gfortran_eoshift2_4_char4,
_gfortran_eoshift2_8_char4, _gfortran_eoshift3_16_char4,
_gfortran_eoshift3_4_char4 and _gfortran_eoshift3_8_char4.
* generated/eoshift3_4.c: Regenerate.
* generated/eoshift1_8.c: Regenerate.
* generated/eoshift1_16.c: Regenerate.
* generated/cshift1_4.c: Regenerate.
* generated/eoshift1_4.c: Regenerate.
* generated/eoshift3_8.c: Regenerate.
* generated/eoshift3_16.c: Regenerate.
* generated/cshift1_8.c: Regenerate.
* generated/cshift1_16.c: Regenerate.
* gfortran.dg/widechar_5.f90: New file.
* gfortran.dg/widechar_6.f90: New file.
* gfortran.dg/widechar_7.f90: New file.
* gfortran.dg/widechar_intrinsics_5.f90: Uncomment the lines
testing the SPREAD intrinsic.
* gfortran.dg/widechar_intrinsics_6.f90: New file.
* gfortran.dg/widechar_intrinsics_7.f90: New file.
* gfortran.dg/widechar_intrinsics_8.f90: New file.
* gfortran.dg/widechar_intrinsics_9.f90: New file.
* gfortran.dg/widechar_intrinsics_10.f90: New file.
From-SVN: r136129
2008-05-28 23:11:39 +02:00
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return back ? (slen + 1) : 1;
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2008-05-14 23:51:27 +02:00
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if (sslen > slen)
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return 0;
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if (!back)
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{
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last = slen + 1 - sslen;
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start = 0;
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delta = 1;
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}
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else
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{
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last = -1;
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start = slen - sslen;
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delta = -1;
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}
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for (; start != last; start+= delta)
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{
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for (i = 0; i < sslen; i++)
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{
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if (str[start + i] != sstr[i])
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break;
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}
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if (i == sslen)
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return (start + 1);
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}
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return 0;
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}
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/* Remove leading blanks from a string, padding at end. The src and dest
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should not overlap. */
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void
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adjustl (CHARTYPE *dest, gfc_charlen_type len, const CHARTYPE *src)
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{
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gfc_charlen_type i;
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i = 0;
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while (i < len && src[i] == ' ')
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i++;
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if (i < len)
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memcpy (dest, &src[i], (len - i) * sizeof (CHARTYPE));
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if (i > 0)
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MEMSET (&dest[len - i], ' ', i);
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}
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/* Remove trailing blanks from a string. */
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void
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adjustr (CHARTYPE *dest, gfc_charlen_type len, const CHARTYPE *src)
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{
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gfc_charlen_type i;
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i = len;
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while (i > 0 && src[i - 1] == ' ')
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i--;
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if (i < len)
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MEMSET (dest, ' ', len - i);
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memcpy (&dest[len - i], src, i * sizeof (CHARTYPE));
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}
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/* Scan a string for any one of the characters in a set of characters. */
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gfc_charlen_type
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string_scan (gfc_charlen_type slen, const CHARTYPE *str,
|
|
|
|
gfc_charlen_type setlen, const CHARTYPE *set, GFC_LOGICAL_4 back)
|
|
|
|
{
|
|
|
|
gfc_charlen_type i, j;
|
|
|
|
|
|
|
|
if (slen == 0 || setlen == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (back)
|
|
|
|
{
|
|
|
|
for (i = slen - 1; i >= 0; i--)
|
|
|
|
{
|
|
|
|
for (j = 0; j < setlen; j++)
|
|
|
|
{
|
|
|
|
if (str[i] == set[j])
|
|
|
|
return (i + 1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
for (i = 0; i < slen; i++)
|
|
|
|
{
|
|
|
|
for (j = 0; j < setlen; j++)
|
|
|
|
{
|
|
|
|
if (str[i] == set[j])
|
|
|
|
return (i + 1);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Verify that a set of characters contains all the characters in a
|
|
|
|
string by identifying the position of the first character in a
|
|
|
|
characters that does not appear in a given set of characters. */
|
|
|
|
|
|
|
|
gfc_charlen_type
|
|
|
|
string_verify (gfc_charlen_type slen, const CHARTYPE *str,
|
|
|
|
gfc_charlen_type setlen, const CHARTYPE *set,
|
|
|
|
GFC_LOGICAL_4 back)
|
|
|
|
{
|
|
|
|
gfc_charlen_type start, last, delta, i;
|
|
|
|
|
|
|
|
if (slen == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (back)
|
|
|
|
{
|
|
|
|
last = -1;
|
|
|
|
start = slen - 1;
|
|
|
|
delta = -1;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
last = slen;
|
|
|
|
start = 0;
|
|
|
|
delta = 1;
|
|
|
|
}
|
|
|
|
for (; start != last; start += delta)
|
|
|
|
{
|
|
|
|
for (i = 0; i < setlen; i++)
|
|
|
|
{
|
|
|
|
if (str[start] == set[i])
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i == setlen)
|
|
|
|
return (start + 1);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* MIN and MAX intrinsics for strings. The front-end makes sure that
|
|
|
|
nargs is at least 2. */
|
|
|
|
|
|
|
|
void
|
|
|
|
string_minmax (gfc_charlen_type *rlen, CHARTYPE **dest, int op, int nargs, ...)
|
|
|
|
{
|
|
|
|
va_list ap;
|
|
|
|
int i;
|
|
|
|
CHARTYPE *next, *res;
|
|
|
|
gfc_charlen_type nextlen, reslen;
|
|
|
|
|
|
|
|
va_start (ap, nargs);
|
|
|
|
reslen = va_arg (ap, gfc_charlen_type);
|
|
|
|
res = va_arg (ap, CHARTYPE *);
|
|
|
|
*rlen = reslen;
|
|
|
|
|
|
|
|
if (res == NULL)
|
|
|
|
runtime_error ("First argument of '%s' intrinsic should be present",
|
|
|
|
op > 0 ? "MAX" : "MIN");
|
|
|
|
|
|
|
|
for (i = 1; i < nargs; i++)
|
|
|
|
{
|
|
|
|
nextlen = va_arg (ap, gfc_charlen_type);
|
|
|
|
next = va_arg (ap, CHARTYPE *);
|
|
|
|
|
|
|
|
if (next == NULL)
|
|
|
|
{
|
|
|
|
if (i == 1)
|
|
|
|
runtime_error ("Second argument of '%s' intrinsic should be "
|
|
|
|
"present", op > 0 ? "MAX" : "MIN");
|
|
|
|
else
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (nextlen > *rlen)
|
|
|
|
*rlen = nextlen;
|
|
|
|
|
|
|
|
if (op * compare_string (reslen, res, nextlen, next) < 0)
|
|
|
|
{
|
|
|
|
reslen = nextlen;
|
|
|
|
res = next;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
va_end (ap);
|
|
|
|
|
|
|
|
if (*rlen == 0)
|
|
|
|
*dest = &zero_length_string;
|
|
|
|
else
|
|
|
|
{
|
|
|
|
CHARTYPE *tmp = internal_malloc_size (*rlen * sizeof (CHARTYPE));
|
|
|
|
memcpy (tmp, res, reslen * sizeof (CHARTYPE));
|
|
|
|
MEMSET (&tmp[reslen], ' ', *rlen - reslen);
|
|
|
|
*dest = tmp;
|
|
|
|
}
|
|
|
|
}
|