1 files changed, 117 insertions, 0 deletions
diff --git a/lib/str-list.c b/lib/str-list.c
new file mode 100644
index 0000000..90b99c2
--- /dev/null
+++ b/lib/str-list.c
@@ -0,0 +1,117 @@
+/* str-list.c: define routines for string lists.
+
+Copyright (C) 1993 Karl Berry.
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public
+License as published by the Free Software Foundation; either
+version 2 of the License, or (at your option) any later version.
+
+This library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "config.h"
+
+#include "str-list.h"
+
+
+/* See the .h file for comments.  */
+
+
+str_list_type
+str_list_init P1H(void)
+{
+  str_list_type ret;
+  
+  STR_LIST_LENGTH (ret) = 0;
+  STR_LIST (ret) = NULL;
+  
+  return ret;
+}
+
+
+void
+str_list_add P2C(str_list_type *, l,  string, s)
+{
+  STR_LIST_LENGTH (*l)++;
+  XRETALLOC (STR_LIST (*l), STR_LIST_LENGTH (*l), string);
+  STR_LIST_LAST_ELT (*l) = s;
+}
+
+
+/* May as well save some reallocations and do everything in a chunk
+   instead of calling str_list_add on each element.  */
+   
+void
+str_list_concat P2C(str_list_type *, target,  str_list_type, more)
+{
+  unsigned e;
+  unsigned prev_len = STR_LIST_LENGTH (*target);
+
+  STR_LIST_LENGTH (*target) += STR_LIST_LENGTH (more);
+  XRETALLOC (STR_LIST (*target), STR_LIST_LENGTH (*target), string);
+  
+  for (e = 0; e < STR_LIST_LENGTH (more); e++)
+    STR_LIST_ELT (*target, prev_len + e) = STR_LIST_ELT (more, e);
+}
+
+
+/* Concatenate the elements of more to each element of target.  This
+   _must_ be done with the first index varying fastest. */
+/* Note that we free the old elements of target as well. */
+
+void
+str_list_concat_elements P2C(str_list_type *, target,  str_list_type, more)
+{
+    if (STR_LIST_LENGTH(more) == 0) {
+        return;
+    } else if (STR_LIST_LENGTH(*target) == 0) {
+        unsigned int i;
+        STR_LIST_LENGTH(*target) = STR_LIST_LENGTH(more);
+        STR_LIST(*target) =
+                (string*)xmalloc(STR_LIST_LENGTH(more)*sizeof(char*));
+        for (i=0;i!=STR_LIST_LENGTH(more);++i) {
+            STR_LIST_ELT(*target,i)=xstrdup(STR_LIST_ELT(more,i));
+        }
+        return;
+    } else {
+        unsigned new_len;
+        char ** new_list;
+        unsigned int i,j;
+        new_list = (string*)xmalloc(STR_LIST_LENGTH (*target)
+                                    * STR_LIST_LENGTH (more) * sizeof(char*));
+
+        new_len = 0;
+        for (j = 0; j != STR_LIST_LENGTH(more); ++j) {
+            for (i = 0; i != STR_LIST_LENGTH(*target); ++i) {
+                new_list[new_len] = concat(STR_LIST_ELT(*target,i),
+                                           STR_LIST_ELT(more,j));
+                ++new_len;
+            }
+        }
+        for (i = 0; i != STR_LIST_LENGTH(*target); ++i)
+            free(STR_LIST_ELT(*target, i));
+        free(STR_LIST(*target));
+        STR_LIST_LENGTH(*target) = new_len;
+        STR_LIST(*target) = new_list;
+    }
+}
+
+
+/* Free the list (but not the elements within it).  */
+
+void
+str_list_free P1C(str_list_type *, l)
+{
+  if (STR_LIST (*l))
+    {
+      free (STR_LIST (*l));
+      STR_LIST (*l) = NULL;
+    }
+}