1 files changed, 121 insertions, 0 deletions
diff --git a/src/3rdparty/autotrace/filename.c b/src/3rdparty/autotrace/filename.c
new file mode 100644
index 0000000..cd42172
--- /dev/null
+++ b/src/3rdparty/autotrace/filename.c
@@ -0,0 +1,121 @@
+/* filename.c: Function manipulate file names
+   Was: find-suffix, extend-fname, make-suffix, remove-suffx
+   substring, concat3 */
+
+/* remove-suffx.c: remove any suffix.
+
+Copyright (C) 1999 Free Software Foundation, Inc.
+
+This program 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.
+
+This program 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 this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif /* Def: HAVE_CONFIG_H */
+
+#include "filename.h"
+#include "xstd.h"
+#include <string.h>
+
+/* Return a fresh copy of SOURCE[START..LIMIT], or NULL if LIMIT<START.
+   If LIMIT>strlen(START), it is reassigned. */
+static gchar *substring(gchar * source, const unsigned start, const unsigned limit);
+
+/* Return a fresh copy of S1 followed by S2, et al.  */
+static gchar *concat3(gchar *, gchar *, gchar *);
+
+gchar *find_suffix(gchar * name)
+{
+  gchar *dot_pos = strrchr(name, '.');
+#ifdef WIN32
+  gchar *slash_pos = strrchr(name, '\\');
+#else
+  gchar *slash_pos = strrchr(name, '/');
+#endif
+
+  /* If the name is `foo' or `/foo.bar/baz', we have no extension.  */
+  return dot_pos == NULL || dot_pos < slash_pos ? NULL : dot_pos + 1;
+}
+
+gchar *extend_filename(gchar * name, gchar * default_suffix)
+{
+  gchar *new_s;
+  gchar *suffix = find_suffix(name);
+
+  new_s = suffix == NULL ? concat3(name, ".", default_suffix) : name;
+  return new_s;
+}
+
+gchar *make_suffix(gchar * s, gchar * new_suffix)
+{
+  gchar *new_s;
+  gchar *old_suffix = find_suffix(s);
+
+  if (old_suffix == NULL)
+    new_s = concat3(s, ".", new_suffix);
+  else {
+    size_t length_through_dot = old_suffix - s;
+
+    XMALLOC(new_s, length_through_dot + strlen(new_suffix) + 1);
+    strncpy(new_s, s, length_through_dot);
+    strcpy(new_s + length_through_dot, new_suffix);
+  }
+
+  return new_s;
+}
+
+gchar *remove_suffix(gchar * s)
+{
+  gchar *suffix = find_suffix(s);
+
+  return suffix == NULL ? s : suffix - 2 - s < 0 ? NULL : substring(s, 0, (unsigned)(suffix - 2 - s));
+}
+
+/* From substring.c */
+static gchar *substring(gchar * source, const unsigned start, const unsigned limit)
+{
+  gchar *result;
+  unsigned this_char;
+  size_t length = strlen(source);
+  size_t lim = limit;
+
+  /* Upper bound out of range? */
+  if (lim >= length)
+    lim = length - 1;
+
+  /* Null substring? */
+  if (start > lim)
+    return "";
+
+  /* The `2' here is one for the null and one for limit - start inclusive. */
+  XMALLOC(result, lim - start + 2);
+
+  for (this_char = start; this_char <= lim; this_char++)
+    result[this_char - start] = source[this_char];
+
+  result[this_char - start] = 0;
+
+  return result;
+}
+
+static gchar *concat3(gchar * s1, gchar * s2, gchar * s3)
+{
+  gchar *answer;
+  XMALLOC(answer, strlen(s1) + strlen(s2) + strlen(s3) + 1);
+  strcpy(answer, s1);
+  strcat(answer, s2);
+  strcat(answer, s3);
+
+  return answer;
+}