/* String intrinsics helper functions.
- Copyright 2002 Free Software Foundation, Inc.
- Contributed by Paul Brook <paul@nowt.org>
+ Copyright 2008 Free Software Foundation, Inc.
-This file is part of the GNU Fortran 95 runtime library (libgfor).
+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 Lesser General Public
+modify it under the terms of the GNU General Public
License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
+version 2 of the License, or (at your option) any later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file. (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
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 Lesser General Public License for more details.
+GNU General Public License for more details.
-You should have received a copy of the GNU Lesser General Public
-License along with libgfor; see the file COPYING.LIB. If not,
-write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+You should have received a copy of the GNU General Public
+License along with libgfortran; see the file COPYING. If not,
+write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
/* Unlike what the name of this file suggests, we don't actually
compiler translates the actual intrinsics calls to calls to
functions in this file. */
-#include <stdlib.h>
-#include <string.h>
-
#include "libgfortran.h"
-
-/* String functions. */
-
-#define copy_string prefix(copy_string)
-void copy_string (GFC_INTEGER_4, char *, GFC_INTEGER_4, const char *);
-
-#define concat_string prefix(concat_string)
-void concat_string (GFC_INTEGER_4, char *,
- GFC_INTEGER_4, const char *,
- GFC_INTEGER_4, const char *);
-
-#define string_len_trim prefix(string_len_trim)
-GFC_INTEGER_4 string_len_trim (GFC_INTEGER_4, const char *);
-
-#define adjustl prefix(adjustl)
-void adjustl (char *, GFC_INTEGER_4, const char *);
-
-#define adjustr prefix(adjustr)
-void adjustr (char *, GFC_INTEGER_4, const char *);
-
-#define string_index prefix(string_index)
-GFC_INTEGER_4 string_index (GFC_INTEGER_4, const char *, GFC_INTEGER_4,
- const char *, GFC_LOGICAL_4);
-
-#define string_scan prefix(string_scan)
-GFC_INTEGER_4 string_scan (GFC_INTEGER_4, const char *, GFC_INTEGER_4,
- const char *, GFC_LOGICAL_4);
-
-#define string_verify prefix(string_verify)
-GFC_INTEGER_4 string_verify (GFC_INTEGER_4, const char *, GFC_INTEGER_4,
- const char *, GFC_LOGICAL_4);
-
-#define string_trim prefix(string_trim)
-void string_trim (GFC_INTEGER_4 *, void **, GFC_INTEGER_4, const char *);
-
-#define string_repeat prefix(string_repeat)
-void string_repeat (char *, GFC_INTEGER_4, const char *, GFC_INTEGER_4);
-
-/* The two areas may overlap so we use memmove. */
-
-void
-copy_string (GFC_INTEGER_4 destlen, char * dest,
- GFC_INTEGER_4 srclen, const char * src)
-{
- if (srclen >= destlen)
- {
- /* This will truncate if too long. */
- memmove (dest, src, destlen);
- /*memcpy (dest, src, destlen);*/
- }
- else
- {
- memmove (dest, src, srclen);
- /*memcpy (dest, src, srclen);*/
- /* Pad with spaces. */
- memset (&dest[srclen], ' ', destlen - srclen);
- }
-}
-
-
-/* Strings of unequal length are extended with pad characters. */
-
-GFC_INTEGER_4
-compare_string (GFC_INTEGER_4 len1, const char * s1,
- GFC_INTEGER_4 len2, const char * s2)
-{
- int res;
- const char *s;
- int len;
-
- res = strncmp (s1, s2, (len1 < len2) ? len1 : len2);
- if (res != 0)
- return res;
-
- if (len1 == len2)
- return 0;
-
- if (len1 < len2)
- {
- len = len2 - len1;
- s = &s2[len1];
- res = -1;
- }
- else
- {
- len = len1 - len2;
- s = &s1[len2];
- res = 1;
- }
-
- while (len--)
- {
- if (*s != ' ')
- {
- if (*s > ' ')
- return res;
- else
- return -res;
- }
- s++;
- }
-
- return 0;
-}
-
-
-/* The destination and source should not overlap. */
-
-void
-concat_string (GFC_INTEGER_4 destlen, char * dest,
- GFC_INTEGER_4 len1, const char * s1,
- GFC_INTEGER_4 len2, const char * s2)
-{
- if (len1 >= destlen)
- {
- memcpy (dest, s1, destlen);
- return;
- }
- memcpy (dest, s1, len1);
- dest += len1;
- destlen -= len1;
-
- if (len2 >= destlen)
- {
- memcpy (dest, s2, destlen);
- return;
- }
-
- memcpy (dest, s2, len2);
- memset (&dest[len2], ' ', destlen - len2);
-}
-
-
-/* Return string with all trailing blanks removed. */
-
-void
-string_trim (GFC_INTEGER_4 * len, void ** dest, GFC_INTEGER_4 slen, const char * src)
-{
- int i;
-
- /* Determine length of result string. */
- for (i = slen - 1; i >= 0; i--)
- {
- if (src[i] != ' ')
- break;
- }
- *len = i + 1;
-
- if (*len > 0)
- {
- /* Allocate space for result string. */
- *dest = internal_malloc (*len);
-
- /* copy string if necessary. */
- memmove (*dest, src, *len);
- }
-}
-
-
-/* The length of a string not including trailing blanks. */
-
-GFC_INTEGER_4
-string_len_trim (GFC_INTEGER_4 len, const char * s)
-{
- int i;
-
- for (i = len - 1; i >= 0; i--)
- {
- if (s[i] != ' ')
- break;
- }
- return i + 1;
-}
-
-
-/* Find a substring within a string. */
-
-GFC_INTEGER_4
-string_index (GFC_INTEGER_4 slen, const char * str, GFC_INTEGER_4 sslen,
- const char * sstr, GFC_LOGICAL_4 back)
-{
- int start;
- int last;
- int i;
- int delta;
-
- if (sslen == 0)
- return 1;
-
- if (sslen > slen)
- return 0;
-
- if (!back)
- {
- last = slen + 1 - sslen;
- start = 0;
- delta = 1;
- }
- else
- {
- last = -1;
- start = slen - sslen;
- delta = -1;
- }
- i = 0;
- for (; start != last; start+= delta)
- {
- for (i = 0; i < sslen; i++)
- {
- if (str[start + i] != sstr[i])
- break;
- }
- if (i == sslen)
- return (start + 1);
- }
- return 0;
-}
-
-
-/* Remove leading blanks from a string, padding at end. The src and dest
- should not overlap. */
-
-void
-adjustl (char *dest, GFC_INTEGER_4 len, const char *src)
-{
- int i;
-
- i = 0;
- while (i<len && src[i] == ' ')
- i++;
-
- if (i < len)
- memcpy (dest, &src[i], len - i);
- if (i > 0)
- memset (&dest[len - i], ' ', i);
-}
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
-/* Remove trailing blanks from a string. */
+/* Helper function to set parts of wide strings to a constant (usually
+ spaces). */
-void
-adjustr (char *dest, GFC_INTEGER_4 len, const char *src)
+static gfc_char4_t *
+memset_char4 (gfc_char4_t *b, gfc_char4_t c, size_t len)
{
- int i;
+ size_t i;
- i = len;
- while (i > 0 && src[i - 1] == ' ')
- i--;
+ for (i = 0; i < len; i++)
+ b[i] = c;
- if (i < len)
- memset (dest, ' ', len - i);
- memcpy (dest + (len - i), src, i );
+ return b;
}
-/* Scan a string for any one of the characters in a set of characters. */
-
-GFC_INTEGER_4
-string_scan (GFC_INTEGER_4 slen, const char * str, GFC_INTEGER_4 setlen,
- const char * set, GFC_LOGICAL_4 back)
-{
- int start;
- int last;
- int i;
- int delta;
+/* All other functions are defined using a few generic macros in
+ string_intrinsics_inc.c, so we avoid code duplication between the
+ various character type kinds. */
- if (slen == 0 || setlen == 0)
- return 0;
+#undef CHARTYPE
+#define CHARTYPE char
+#undef UCHARTYPE
+#define UCHARTYPE unsigned char
+#undef SUFFIX
+#define SUFFIX(x) x
+#undef MEMSET
+#define MEMSET memset
- if (back)
- {
- last = 0;
- start = slen - 1;
- delta = -1;
- }
- else
- {
- last = slen - 1;
- start = 0;
- delta = 1;
- }
+#include "string_intrinsics_inc.c"
- i = 0;
- for (; start != last; start += delta)
- {
- for (i = 0; i < setlen; i++)
- {
- if (str[start] == set[i])
- return (start + 1);
- }
- }
- return 0;
-}
-
-
-/* Verify that a set of characters contains all the characters in a
- string by indentifying the position of the first character in a
- characters that dose not appear in a given set of characters. */
-
-GFC_INTEGER_4
-string_verify (GFC_INTEGER_4 slen, const char * str, GFC_INTEGER_4 setlen,
- const char * set, GFC_LOGICAL_4 back)
-{
- int start;
- int last;
- int i;
- int delta;
+#undef CHARTYPE
+#define CHARTYPE gfc_char4_t
+#undef UCHARTYPE
+#define UCHARTYPE gfc_char4_t
+#undef SUFFIX
+#define SUFFIX(x) x ## _char4
+#undef MEMSET
+#define MEMSET memset_char4
- if (slen == 0)
- return 0;
-
- if (back)
- {
- last = 0;
- start = slen - 1;
- delta = -1;
- }
- else
- {
- last = slen - 1;
- start = 0;
- delta = 1;
- }
- i = 0;
- 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;
-}
-
-
-/* Concatenate several copies of a string. */
-
-void
-string_repeat (char * dest, GFC_INTEGER_4 slen,
- const char * src, GFC_INTEGER_4 ncopies)
-{
- int i;
-
- /* See if ncopies is valid. */
- if (ncopies < 0)
- {
- /* The error is already reported. */
- runtime_error ("Augument NCOPIES is negative.");
- }
-
- /* Copy characters. */
- for (i = 0; i < ncopies; i++)
- {
- memmove (dest + (i * slen), src, slen);
- }
-}
+#include "string_intrinsics_inc.c"
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