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add tab completion for readline

master
Daniel Kolesa 2016-09-02 22:15:05 +01:00
parent fd8a07f47a
commit 78d7ab73bd
1 changed files with 39 additions and 0 deletions
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39
tools/edit_readline.hh
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@ -3,13 +3,52 @@
#define CS_REPL_HAS_EDIT
/* use the GNU readline library */
#include <string.h>
#include <ostd/string.hh>
#include <ostd/maybe.hh>
#include <readline/readline.h>
#include <readline/history.h>
#ifdef CS_REPL_HAS_COMPLETE
static char *ln_complete_list(char const *buf, int state) {
static ostd::ConstCharRange cmd;
static ostd::PointerRange<CsIdent *> itr;
if (!state) {
cmd = get_complete_cmd(buf);
itr = gcs->identmap.iter();
}
for (; !itr.empty(); itr.pop_front()) {
CsIdent *id = itr.front();
if (!id->is_command()) {
continue;
}
ostd::ConstCharRange idname = id->get_name();
if (idname.size() <= cmd.size()) {
continue;
}
if (idname.slice(0, cmd.size()) == cmd) {
itr.pop_front();
return strdup(idname.data());
}
}
return nullptr;
}
static char **ln_complete(char const *buf, int, int) {
rl_attempted_completion_over = 1;
return rl_completion_matches(buf, ln_complete_list);
}
#endif
static void init_lineedit(ostd::ConstCharRange) {
#ifdef CS_REPL_HAS_COMPLETE
rl_attempted_completion_function = ln_complete;
#endif
}
static ostd::Maybe<ostd::String> read_line(CsSvar *pr) {