int
main(int argc, char *argv[])
{
EditLine *el = NULL;
int numc, ncontinuation;
const wchar_t *line;
TokenizerW *tok;
HistoryW *hist;
HistEventW ev;
#ifdef DEBUG
int i;
#endif
setlocale(LC_ALL, "");
(void)signal(SIGINT, sig);
(void)signal(SIGQUIT, sig);
(void)signal(SIGHUP, sig);
(void)signal(SIGTERM, sig);
hist = history_winit(); /* Init built-in history */
history_w(hist, &ev, H_SETSIZE, 100); /* Remember 100 events */
history_w(hist, &ev, H_LOAD, hfile);
tok = tok_winit(NULL); /* Init the tokenizer */
el = el_init(argv[0], stdin, stdout, stderr);
el_wset(el, EL_EDITOR, L"vi"); /* Default editor is vi */
el_wset(el, EL_SIGNAL, 1); /* Handle signals gracefully */
el_wset(el, EL_PROMPT_ESC, prompt, '\1'); /* Set the prompt function */
el_wset(el, EL_HIST, history_w, hist); /* FIXME - history_w? */
/* Add a user-defined function */
el_wset(el, EL_ADDFN, L"ed-complete", L"Complete argument", complete);
/* Bind <tab> to it */
el_wset(el, EL_BIND, L"^I", L"ed-complete", NULL);
/*
* Bind j, k in vi command mode to previous and next line, instead
* of previous and next history.
*/
el_wset(el, EL_BIND, L"-a", L"k", L"ed-prev-line", NULL);
el_wset(el, EL_BIND, L"-a", L"j", L"ed-next-line", NULL);
/* Source the user's defaults file. */
el_source(el, NULL);
while((line = el_wgets(el, &numc)) != NULL && numc != 0) {
int ac, cc, co, rc;
const wchar_t **av;
const LineInfoW *li;
li = el_wline(el);
#ifdef DEBUG
(void)fwprintf(stderr, L"==> got %d %ls", numc, line);
(void)fwprintf(stderr, L" > li `%.*ls_%.*ls'\n",
(li->cursor - li->buffer), li->buffer,
(li->lastchar - 1 - li->cursor),
(li->cursor >= li->lastchar) ? L"" : li->cursor);
#endif
if (gotsig) {
(void)fprintf(stderr, "Got signal %d.\n", gotsig);
gotsig = 0;
el_reset(el);
}
if(!continuation && numc == 1)
continue; /* Only got a linefeed */
ac = cc = co = 0;
ncontinuation = tok_wline(tok, li, &ac, &av, &cc, &co);
if (ncontinuation < 0) {
(void) fprintf(stderr, "Internal error\n");
continuation = 0;
continue;
}
#ifdef DEBUG
(void)fprintf(stderr, " > nc %d ac %d cc %d co %d\n",
ncontinuation, ac, cc, co);
#endif
history_w(hist, &ev, continuation ? H_APPEND : H_ENTER, line);
continuation = ncontinuation;
ncontinuation = 0;
if(continuation)
continue;
#ifdef DEBUG
for (i = 0; i < ac; ++i) {
(void)fwprintf(stderr, L" > arg# %2d ", i);
if (i != cc)
(void)fwprintf(stderr, L"`%ls'\n", av[i]);
else
(void)fwprintf(stderr, L"`%.*ls_%ls'\n",
co, av[i], av[i] + co);
}
#endif
if (wcscmp (av[0], L"history") == 0) {
switch(ac) {
case 1:
for(rc = history_w(hist, &ev, H_LAST);
rc != -1;
rc = history_w(hist, &ev, H_PREV))
(void)fwprintf(stdout, L"%4d %ls",
ev.num, ev.str);
break;
case 2:
if (wcscmp(av[1], L"clear") == 0)
history_w(hist, &ev, H_CLEAR);
else
goto badhist;
break;
case 3:
if (wcscmp(av[1], L"load") == 0)
history_w(hist, &ev, H_LOAD,
my_wcstombs(av[2]));
else if (wcscmp(av[1], L"save") == 0)
history_w(hist, &ev, H_SAVE,
my_wcstombs(av[2]));
else
goto badhist;
break;
badhist:
default:
(void)fprintf(stderr,
"Bad history arguments\n");
break;
}
} else if (el_wparse(el, ac, av) == -1) {
switch (fork()) {
case 0: {
Tokenizer *ntok = tok_init(NULL);
int nargc;
const char **nav;
tok_str(ntok, my_wcstombs(line), &nargc, &nav);
execvp(nav[0],(char **)nav);
perror(nav[0]);
_exit(1);
/* NOTREACHED */
break;
}
case -1:
perror("fork");
break;
default:
if (wait(&rc) == -1)
perror("wait");
(void)fprintf(stderr, "Exit %x\n", rc);
break;
}
}
tok_wreset(tok);
}
el_end(el);
tok_wend(tok);
history_w(hist, &ev, H_SAVE, hfile);
history_wend(hist);
fprintf(stdout, "\n");
return 0;
}
char *lg_readline(const char *mb_prompt)
{
static int is_init = FALSE;
static HistoryW *hist = NULL;
static HistEventW ev;
static EditLine *el = NULL;
int numc;
size_t byte_len;
const wchar_t *wc_line;
char *mb_line;
char *nl;
if (!is_init)
{
size_t sz;
#define HFILE ".lg_history"
is_init = TRUE;
sz = mbstowcs(NULL, mb_prompt, 0) + 4;
wc_prompt = malloc (sz*sizeof(wchar_t));
mbstowcs(wc_prompt, mb_prompt, sz);
hist = history_winit(); /* Init built-in history */
history_w(hist, &ev, H_SETSIZE, 20); /* Remember 20 events */
history_w(hist, &ev, H_LOAD, HFILE);
el = el_init("link-parser", stdin, stdout, stderr);
/* By default, it comes up in vi mode, with the editor not in
* insert mode; and even when in insert mode, it drops back to
* command mode at the drop of a hat. Totally confusing/lame. */
el_wset(el, EL_EDITOR, L"emacs");
el_wset(el, EL_HIST, history_w, hist);
el_wset(el, EL_PROMPT_ESC, prompt, '\1'); /* Set the prompt function */
el_source(el, NULL); /* Source the user's defaults file. */
}
wc_line = el_wgets(el, &numc);
/* Received end-of-file */
if (numc <= 0)
{
el_end(el);
history_wend(hist);
free(wc_prompt);
wc_prompt = NULL;
hist = NULL;
el = NULL;
is_init = FALSE;
return NULL;
}
if (1 < numc)
{
history_w(hist, &ev, H_ENTER, wc_line);
history_w(hist, &ev, H_SAVE, HFILE);
}
/* fwprintf(stderr, L"==> got %d %ls", numc, wc_line); */
byte_len = wcstombs(NULL, wc_line, 0) + 4;
mb_line = malloc(byte_len);
wcstombs(mb_line, wc_line, byte_len);
/* In order to be compatible with regular libedit, we have to
* strip away the trailing newline, if any. */
nl = strchr(mb_line, '\n');
if (nl) *nl = 0x0;
return mb_line;
}
