#include "config.h"
#if !defined(lint) && !defined(SCCSID)
#if 0
static char sccsid[] = "@(#)parse.c 8.1 (Berkeley) 6/4/93";
#else
__RCSID("$NetBSD: parse.c,v 1.15 2002/03/18 16:00:56 christos Exp $");
#endif
#endif
#include "el.h"
#include "tokenizer.h"
#include <stdlib.h>
private const struct {
const char *name;
int (*func)(EditLine *, int, const char **);
} cmds[] = {
{ "bind", map_bind },
{ "echotc", term_echotc },
{ "edit", el_editmode },
{ "history", hist_list },
{ "telltc", term_telltc },
{ "settc", term_settc },
{ "setty", tty_stty },
{ NULL, NULL }
};
protected int
parse_line(EditLine *el, const char *line)
{
const char **argv;
int argc;
Tokenizer *tok;
tok = tok_init(NULL);
tok_line(tok, line, &argc, &argv);
argc = el_parse(el, argc, argv);
tok_end(tok);
return (argc);
}
public int
el_parse(EditLine *el, int argc, const char *argv[])
{
const char *ptr;
int i;
if (argc < 1)
return (-1);
ptr = strchr(argv[0], ':');
if (ptr != NULL) {
char *tprog;
size_t l;
if (ptr == argv[0])
return (0);
l = ptr - argv[0] - 1;
tprog = (char *) el_malloc(l + 1);
if (tprog == NULL)
return (0);
(void) strncpy(tprog, argv[0], l);
tprog[l] = '\0';
ptr++;
l = el_match(el->el_prog, tprog);
el_free(tprog);
if (!l)
return (0);
} else
ptr = argv[0];
for (i = 0; cmds[i].name != NULL; i++)
if (strcmp(cmds[i].name, ptr) == 0) {
i = (*cmds[i].func) (el, argc, argv);
return (-i);
}
return (-1);
}
protected int
parse__escape(const char **const ptr)
{
const char *p;
int c;
p = *ptr;
if (p[1] == 0)
return (-1);
if (*p == '\\') {
p++;
switch (*p) {
case 'a':
c = '\007';
break;
case 'b':
c = '\010';
break;
case 't':
c = '\011';
break;
case 'n':
c = '\012';
break;
case 'v':
c = '\013';
break;
case 'f':
c = '\014';
break;
case 'r':
c = '\015';
break;
case 'e':
c = '\033';
break;
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
{
int cnt, ch;
for (cnt = 0, c = 0; cnt < 3; cnt++) {
ch = *p++;
if (ch < '0' || ch > '7') {
p--;
break;
}
c = (c << 3) | (ch - '0');
}
if ((c & 0xffffff00) != 0)
return (-1);
--p;
break;
}
default:
c = *p;
break;
}
} else if (*p == '^' && isalpha((unsigned char) p[1])) {
p++;
c = (*p == '?') ? '\177' : (*p & 0237);
} else
c = *p;
*ptr = ++p;
return (c);
}
protected char *
parse__string(char *out, const char *in)
{
char *rv = out;
int n;
for (;;)
switch (*in) {
case '\0':
*out = '\0';
return (rv);
case '\\':
case '^':
if ((n = parse__escape(&in)) == -1)
return (NULL);
*out++ = n;
break;
default:
*out++ = *in++;
break;
}
}
protected int
parse_cmd(EditLine *el, const char *cmd)
{
el_bindings_t *b;
for (b = el->el_map.help; b->name != NULL; b++)
if (strcmp(b->name, cmd) == 0)
return (b->func);
return (-1);
}