1 files changed, 136 insertions, 0 deletions
diff --git a/src/libs/libgroff/errarg.cpp b/src/libs/libgroff/errarg.cpp
new file mode 100644
index 0000000..99fc0fa
--- /dev/null
+++ b/src/libs/libgroff/errarg.cpp
@@ -0,0 +1,136 @@
+/* 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/>. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#include <stdio.h>
+
+#include "errarg.h"
+
+errarg::errarg(const char *p) : type(STRING)
+{
+  s = p ? p : "(null)";
+}
+
+errarg::errarg() : type(EMPTY)
+{
+}
+
+errarg::errarg(int nn) : type(INTEGER)
+{
+  n = nn;
+}
+
+errarg::errarg(unsigned int uu) : type(UNSIGNED_INTEGER)
+{
+  u = uu;
+}
+
+errarg::errarg(char cc) : type(CHAR)
+{
+  c = cc;
+}
+
+errarg::errarg(unsigned char cc) : type(CHAR)
+{
+  c = cc;
+}
+
+errarg::errarg(double dd) : type(DOUBLE)
+{
+  d = dd;
+}
+
+int errarg::empty() const
+{
+  return type == EMPTY;
+}
+
+extern "C" {
+  const char *i_to_a(int);
+  const char *ui_to_a(unsigned int);
+}
+
+void errarg::print() const
+{
+  switch (type) {
+  case INTEGER:
+    fputs(i_to_a(n), stderr);
+    break;
+  case UNSIGNED_INTEGER:
+    fputs(ui_to_a(u), stderr);
+    break;
+  case CHAR:
+    putc(c, stderr);
+    break;
+  case STRING:
+    fputs(s, stderr);
+    break;
+  case DOUBLE:
+    fprintf(stderr, "%g", d);
+    break;
+  case EMPTY:
+    break;
+  }
+}
+
+errarg empty_errarg;
+
+void errprint(const char *format,
+	      const errarg &arg1,
+	      const errarg &arg2,
+	      const errarg &arg3)
+{
+  assert(format != 0);
+  char c;
+  while ((c = *format++) != '\0') {
+    if (c == '%') {
+      c = *format++;
+      switch(c) {
+      case '%':
+	fputc('%', stderr);
+	break;
+      case '1':
+	assert(!arg1.empty());
+	arg1.print();
+	break;
+      case '2':
+	assert(!arg2.empty());
+	arg2.print();
+	break;
+      case '3':
+	assert(!arg3.empty());
+	arg3.print();
+	break;
+      default:
+	assert(0 == "unsupported argument conversion (not in [%123])");
+      }
+    }
+    else
+      putc(c, stderr);
+  }
+}
+
+// Local Variables:
+// fill-column: 72
+// mode: C++
+// End:
+// vim: set cindent noexpandtab shiftwidth=2 textwidth=72: