forked from Lainports/opnsense-ports
58 lines
1.7 KiB
Text
58 lines
1.7 KiB
Text
--- src/lua.c.orig 2018-03-16 14:23:08 UTC
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+++ src/lua.c
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@@ -379,7 +379,54 @@ static int handle_luainit (lua_State *L)
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*/
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#if !defined(lua_readline) /* { */
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-#if defined(LUA_USE_READLINE) /* { */
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+#if defined(LUA_USE_READLINE_DL)/* { */
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+
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+#include <dlfcn.h>
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+
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+#ifndef LUA_READLINE_LIBPATH
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+#define LUA_READLINE_LIBPATH "/usr/local/lib/libedit.so"
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+#endif
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+
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+typedef char *readline_functype(const char *);
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+typedef int add_history_functype(const char *);
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+
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+static readline_functype *lua_readline_p = NULL;
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+static add_history_functype *lua_saveline_p = NULL;
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+
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+static void lua_initreadline(lua_State *L)
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+{
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+ void *editlib = NULL;
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+ union dl_func_hack {
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+ void *ptr;
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+ readline_functype *rlfunc;
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+ add_history_functype *ahfunc;
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+ char **rlnamevar;
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+ int *icompvar;
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+ } u;
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+ (void) L;
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+ if ((editlib = dlopen(LUA_READLINE_LIBPATH, RTLD_LAZY | RTLD_LOCAL))) {
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+ u.ptr = dlsym(editlib, "readline");
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+ lua_readline_p = u.rlfunc;
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+ u.ptr = dlsym(editlib, "add_history");
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+ lua_saveline_p = u.ahfunc;
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+ if ((u.ptr = dlsym(editlib, "rl_readline_name")))
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+ *u.rlnamevar = "lua";
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+ if ((u.ptr = dlsym(editlib, "rl_inhibit_completion")))
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+ *u.icompvar = 1;
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+ }
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+}
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+
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+#define lua_readline(L,b,p) \
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+ ((void)L, \
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+ (lua_readline_p) \
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+ ? (((b)=lua_readline_p(p)) != NULL) \
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+ : (fputs(p, stdout), fflush(stdout), fgets(b, LUA_MAXINPUT, stdin) != NULL))
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+#define lua_saveline(L,line) \
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+ do { (void)L; if (lua_saveline_p) lua_saveline_p(line); } while(0)
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+#define lua_freeline(L,b) \
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+ do { (void)L; if (lua_readline_p) free(b); } while(0)
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+
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+#elif defined(LUA_USE_READLINE) /* { */
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#include <readline/readline.h>
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#include <readline/history.h>
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