Revert "Remove gmp from AOS"
This reverts commit f37c97684f0910a3f241394549392f00145ab0f7.
We need gmp for SymEngine for symbolicmanipultion in C++
Change-Id: Ia13216d1715cf96944f7b4f422b7a799f921d4a4
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/third_party/gmp/demos/calc/calcread.c b/third_party/gmp/demos/calc/calcread.c
new file mode 100644
index 0000000..4043368
--- /dev/null
+++ b/third_party/gmp/demos/calc/calcread.c
@@ -0,0 +1,146 @@
+/* Readline support for calc program.
+
+Copyright 2000, 2001 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+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 3 of the License, 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, see https://www.gnu.org/licenses/. */
+
+#include "calc-common.h"
+
+#if WITH_READLINE
+#include <stdio.h> /* for FILE for old versions of readline/readline.h */
+#include <stdlib.h> /* for free */
+#include <string.h> /* for strdup */
+#include <unistd.h> /* for isatty */
+#include <readline/readline.h>
+#include <readline/history.h>
+
+#include "gmp.h"
+
+
+/* change this to "#define TRACE(x) x" for a few diagnostics */
+#define TRACE(x)
+
+
+#define MIN(x,y) ((x) < (y) ? (x) : (y))
+
+char *
+calc_completion_entry (const char *text, int state)
+{
+ static int index, len;
+ char *name;
+
+ if (!state)
+ {
+ index = 0;
+ len = strlen (text);
+ }
+ TRACE (printf ("calc_completion_entry %s %d, index=%d len=%d\n",
+ text, state, index, len));
+ while ((name = calc_keywords[index].name) != NULL)
+ {
+ index++;
+ if (memcmp (name, text, len) == 0)
+ return (strdup (name));
+ }
+ return NULL;
+}
+
+void
+calc_init_readline (void)
+{
+ /* By default use readline when the input is a tty. It's a bit contrary
+ to the GNU interface conventions to make the behaviour depend on where
+ the input is coming from, but this is pretty convenient. */
+ if (calc_option_readline == -1)
+ {
+ calc_option_readline = isatty (fileno (stdin));
+ TRACE (printf ("calc_option_readline %d\n", calc_option_readline));
+ }
+
+ if (calc_option_readline)
+ {
+ printf ("GNU MP demo calculator program, gmp version %s\n", gmp_version);
+ printf ("Type \"help\" for help.\n");
+ rl_readline_name = "gmp-calc";
+ rl_completion_entry_function = calc_completion_entry;
+ }
+}
+
+
+/* This function is supposed to return YY_NULL to indicate EOF, but that
+ constant is only in calclex.c and we don't want to clutter calclex.l with
+ this readline stuff, so instead just hard code 0 for YY_NULL. That's
+ it's defined value on unix anyway. */
+
+int
+calc_input (char *buf, size_t max_size)
+{
+ if (calc_option_readline)
+ {
+ static char *line = NULL;
+ static size_t line_size = 0;
+ static size_t upto = 0;
+ size_t copy_size;
+
+ if (upto >= line_size)
+ {
+ if (line != NULL)
+ free (line);
+
+ line = readline (calc_more_input ? "more> " : "> ");
+ calc_more_input = 1;
+ if (line == NULL)
+ return 0;
+ TRACE (printf ("readline: %s\n", line));
+
+ if (line[0] != '\0')
+ add_history (line);
+
+ line_size = strlen (line);
+ line[line_size] = '\n';
+ line_size++;
+ upto = 0;
+ }
+
+ copy_size = MIN (line_size-upto, max_size);
+ memcpy (buf, line+upto, copy_size);
+ upto += copy_size;
+ return copy_size;
+ }
+ else
+ {
+ /* not readline */
+ return fread (buf, 1, max_size, stdin);
+ }
+}
+
+
+/* This redefined input() might let a traditional lex use the readline
+ support here. Apparently POSIX doesn't specify whether an override like
+ this will work, so maybe it'll work or maybe it won't. This function is
+ also not particularly efficient, but don't worry about that, since flex
+ is the preferred parser. */
+
+int
+input (void)
+{
+ char c;
+ if (calc_input (&c, 1) != 1)
+ return EOF;
+ else
+ return (int) c;
+}
+
+#endif /* WITH_READLINE */