1 files changed, 78 insertions, 0 deletions
diff --git a/src/libs/libgroff/lf.cpp b/src/libs/libgroff/lf.cpp
new file mode 100644
index 0000000..9c255fb
--- /dev/null
+++ b/src/libs/libgroff/lf.cpp
@@ -0,0 +1,78 @@
+// -*- C++ -*-
+/* Copyright (C) 1989-2020 Free Software Foundation, Inc.
+     Written by James Clark (jjc@jclark.com)
+
+This file is part of groff.
+
+groff 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 3 of the License, or
+(at your option) any later version.
+
+groff 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, see <http://www.gnu.org/licenses/>. */
+
+#include "lib.h"
+#include "cset.h"
+#include "stringclass.h"
+#include "lf.h"
+
+#include <ctype.h>
+
+extern void change_filename(const char *);
+extern void change_lineno(int);
+
+int interpret_lf_args(const char *p)
+{
+  while (*p == ' ')
+    p++;
+  if (!csdigit(*p))
+    return 0;
+  int ln = 0;
+  do {
+    ln *= 10;
+    ln += *p++ - '0';
+  } while (csdigit(*p));
+  if (*p != ' ' && *p != '\n' && *p != '\0')
+    return 0;
+  while (*p == ' ')
+    p++;
+  if (*p == '\0' || *p == '\n')  {
+    change_lineno(ln);
+    return 1;
+  }
+  const char *q;
+  for (q = p;
+       *q != '\0' && *q != ' ' && *q != '\n' && *q != '\\';
+       q++)
+    ;
+  string tem(p, q - p);
+  while (*q == ' ')
+    q++;
+  if (*q != '\n' && *q != '\0')
+    return 0;
+  tem += '\0';
+  change_filename(tem.contents());
+  change_lineno(ln);
+  return 1;
+}
+
+#if defined(__MSDOS__) || (defined(_WIN32) && !defined(__CYGWIN__))
+void normalize_for_lf (string &fn)
+{
+  int fnlen = fn.length();
+  for (int i = 0; i < fnlen; i++) {
+    if (fn[i] == '\\')
+      fn[i] = '/';
+  }
+}
+#else
+void normalize_for_lf (string &)
+{
+}
+#endif