libcubescript/tools/edit_linenoise.hh

39 lines
908 B
C++

#ifdef CS_REPL_USE_LINENOISE
#ifndef CS_REPL_HAS_EDIT
#define CS_REPL_HAS_EDIT
/* use the bundled linenoise library, default */
#include <errno.h>
#include <ostd/string.hh>
#include <ostd/maybe.hh>
#include "linenoise.hh"
static void init_lineedit(ostd::ConstCharRange) {
/* sensible default history size */
linenoiseHistorySetMaxLen(1000);
}
static ostd::Maybe<ostd::String> read_line(CsSvar *pr) {
auto line = linenoise(pr->get_value().data());
if (!line) {
/* linenoise traps ctrl-c, detect it and let the user exit */
if (errno == EAGAIN) {
return ostd::nothing;
}
return ostd::String();
}
ostd::String ret = line;
linenoiseFree(line);
return ostd::move(ret);
}
static void add_history(ostd::ConstCharRange line) {
/* backed by ostd::String so it's terminated */
linenoiseHistoryAdd(line.data());
}
#endif
#endif