Imported from ../bash-2.05.tar.gz.

lib/sh/stringlist.c

@@ -0,0 +1,248 @@
+/* stringlist.c - functions to handle a generic `list of strings' structure */
+
+/* Copyright (C) 2000 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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 2, or (at your option) any later
+   version.
+
+   Bash 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.
+
+   You should have received a copy of the GNU General Public License along
+   with Bash; see the file COPYING.  If not, write to the Free Software
+   Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+
+#include <config.h>
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include "bashansi.h"
+
+#include "shell.h"
+
+#ifdef STRDUP
+#  undef STRDUP
+#endif
+#define STRDUP(x)	((x) ? savestring (x) : (char *)NULL)
+
+/* Allocate a new STRINGLIST, with room for N strings. */
+
+STRINGLIST *
+alloc_stringlist (n)
+     int n;
+{
+  STRINGLIST *ret;
+  register int i;
+
+  ret = (STRINGLIST *)xmalloc (sizeof (STRINGLIST));
+  if (n)
+    {
+      ret->list = alloc_array (n+1);
+      ret->list_size = n;
+      for (i = 0; i < n; i++)
+	ret->list[i] = (char *)NULL;
+    }
+  else
+    {
+      ret->list = (char **)NULL;
+      ret->list_size = 0;
+    }
+  ret->list_len = 0;
+  return ret;
+}
+
+STRINGLIST *
+realloc_stringlist (sl, n)
+     STRINGLIST *sl;
+     int n;
+{
+  register int i;
+
+  if (n > sl->list_size)
+    {
+      sl->list = (char **)xrealloc (sl->list, (n+1) * sizeof (char *));
+      for (i = sl->list_size; i <= n; i++)
+	sl->list[i] = (char *)NULL;
+      sl->list_size = n;
+    }
+  return sl;
+}
+  
+void
+free_stringlist (sl)
+     STRINGLIST *sl;
+{
+  if (sl == 0)
+    return;
+  if (sl->list)
+    free_array (sl->list);
+  free (sl);
+}
+
+STRINGLIST *
+copy_stringlist (sl)
+     STRINGLIST *sl;
+{
+  STRINGLIST *new;
+  register int i;
+
+  new = alloc_stringlist (sl->list_size);
+  /* I'd like to use copy_array, but that doesn't copy everything. */
+  if (sl->list)
+    {
+      for (i = 0; i < sl->list_size; i++)
+	new->list[i] = STRDUP (sl->list[i]);
+    }
+  new->list_size = sl->list_size;
+  new->list_len = sl->list_len;
+  /* just being careful */
+  if (new->list)
+    new->list[new->list_len] = (char *)NULL;
+  return new;
+}
+
+/* Return a new STRINGLIST with everything from M1 and M2. */
+
+STRINGLIST *
+merge_stringlists (m1, m2)
+     STRINGLIST *m1, *m2;
+{
+  STRINGLIST *sl;
+  int i, n, l1, l2;
+
+  l1 = m1 ? m1->list_len : 0;
+  l2 = m2 ? m2->list_len : 0;
+
+  sl = alloc_stringlist (l1 + l2 + 1);
+  for (i = n = 0; i < l1; i++, n++)
+    sl->list[n] = STRDUP (m1->list[i]);
+  for (i = 0; i < l2; i++, n++)
+    sl->list[n] = STRDUP (m2->list[i]);
+  sl->list_len = n;
+  sl->list[n] = (char *)NULL;
+}
+
+/* Make STRINGLIST M1 contain everything in M1 and M2. */
+STRINGLIST *
+append_stringlist (m1, m2)
+     STRINGLIST *m1, *m2;
+{
+  register int i, n, len1, len2;
+
+  if (m1 == 0)
+    {
+      m1 = copy_stringlist (m2);
+      return m1;
+    }
+
+  len1 = m1->list_len;
+  len2 = m2 ? m2->list_len : 0;
+
+  if (len2)
+    {
+      m1 = realloc_stringlist (m1, len1 + len2 + 1);
+      for (i = 0, n = len1; i < len2; i++, n++)
+	m1->list[n] = STRDUP (m2->list[i]);
+      m1->list[n] = (char *)NULL;
+      m1->list_len = n;
+    }
+
+  return m1;
+}
+
+STRINGLIST *
+prefix_suffix_stringlist (sl, prefix, suffix)
+     STRINGLIST *sl;
+     char *prefix, *suffix;
+{
+  int plen, slen, tlen, llen, i;
+  char *t;
+
+  if (sl == 0 || sl->list == 0 || sl->list_len == 0)
+    return sl;
+
+  plen = STRLEN (prefix);
+  slen = STRLEN (suffix);
+
+  if (plen == 0 && slen == 0)
+    return (sl);
+
+  for (i = 0; i < sl->list_len; i++)
+    {
+      llen = STRLEN (sl->list[i]);
+      tlen = plen + llen + slen + 1;
+      t = xmalloc (tlen + 1);
+      if (plen)
+	strcpy (t, prefix);
+      strcpy (t + plen, sl->list[i]);
+      if (slen)
+	strcpy (t + plen + llen, suffix);
+      free (sl->list[i]);
+      sl->list[i] = t;
+    }
+
+  return (sl);	 
+}
+   
+void
+print_stringlist (sl, prefix)
+     STRINGLIST *sl;
+     char *prefix;
+{
+  register int i;
+
+  if (sl == 0)
+    return;
+  for (i = 0; i < sl->list_len; i++)
+    printf ("%s%s\n", prefix ? prefix : "", sl->list[i]);
+}
+
+void
+sort_stringlist (sl)
+     STRINGLIST *sl;
+{
+  if (sl == 0 || sl->list_len == 0 || sl->list == 0)
+    return;
+  sort_char_array (sl->list);
+}
+
+STRINGLIST *
+word_list_to_stringlist (list, copy, starting_index, ip)
+     WORD_LIST *list;
+     int copy, starting_index, *ip;
+{
+  STRINGLIST *ret;
+  int slen, len;
+
+  slen = list_length (list);
+  ret = (STRINGLIST *)xmalloc (sizeof (STRINGLIST));
+  ret->list = word_list_to_argv (list, copy, starting_index, &len);
+  ret->list_size = slen + starting_index;
+  ret->list_len = len;
+  if (ip)
+    *ip = len;
+  return ret;
+}
+
+WORD_LIST *
+stringlist_to_word_list (sl, copy, starting_index)
+     STRINGLIST *sl;
+     int copy, starting_index;
+{
+  WORD_LIST *list;
+
+  if (sl == 0 || sl->list == 0)
+    return ((WORD_LIST *)NULL);
+
+  list = argv_to_word_list (sl->list, copy, starting_index);
+  return list;
+}