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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation.
* Copyright (c) 2009, Olivier MATZ <[email protected]>
* All rights reserved.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdarg.h>
#include <errno.h>
#include <rte_string_fns.h>
#include "cmdline_private.h"
static void
cmdline_valid_buffer(struct rdline *rdl, const char *buf,
__rte_unused unsigned int size)
{
struct cmdline *cl = rdl->opaque;
int ret;
ret = cmdline_parse(cl, buf);
if (ret == CMDLINE_PARSE_AMBIGUOUS)
cmdline_printf(cl, "Ambiguous command\n");
else if (ret == CMDLINE_PARSE_NOMATCH)
cmdline_printf(cl, "Command not found\n");
else if (ret == CMDLINE_PARSE_BAD_ARGS)
cmdline_printf(cl, "Bad arguments\n");
}
static int
cmdline_complete_buffer(struct rdline *rdl, const char *buf,
char *dstbuf, unsigned int dstsize,
int *state)
{
struct cmdline *cl = rdl->opaque;
return cmdline_complete(cl, buf, state, dstbuf, dstsize);
}
int
cmdline_write_char(struct rdline *rdl, char c)
{
int ret = -1;
struct cmdline *cl;
if (!rdl)
return -1;
cl = rdl->opaque;
if (cl->s_out >= 0)
ret = write(cl->s_out, &c, 1);
return ret;
}
void
cmdline_set_prompt(struct cmdline *cl, const char *prompt)
{
if (!cl || !prompt)
return;
strlcpy(cl->prompt, prompt, sizeof(cl->prompt));
}
struct cmdline *
cmdline_new(cmdline_parse_ctx_t *ctx, const char *prompt, int s_in, int s_out)
{
struct cmdline *cl;
int ret;
if (!ctx || !prompt)
return NULL;
cl = malloc(sizeof(struct cmdline));
if (cl == NULL)
return NULL;
memset(cl, 0, sizeof(struct cmdline));
cl->s_in = s_in;
cl->s_out = s_out;
cl->ctx = ctx;
ret = rdline_init(&cl->rdl, cmdline_write_char, cmdline_valid_buffer,
cmdline_complete_buffer, cl);
if (ret != 0) {
free(cl);
return NULL;
}
cmdline_set_prompt(cl, prompt);
rdline_newline(&cl->rdl, cl->prompt);
return cl;
}
struct rdline*
cmdline_get_rdline(struct cmdline *cl)
{
return &cl->rdl;
}
void
cmdline_free(struct cmdline *cl)
{
dprintf("called\n");
if (!cl)
return;
if (cl->s_in > 2)
close(cl->s_in);
if (cl->s_out != cl->s_in && cl->s_out > 2)
close(cl->s_out);
free(cl);
}
void
cmdline_printf(const struct cmdline *cl, const char *fmt, ...)
{
va_list ap;
if (!cl || !fmt)
return;
if (cl->s_out < 0)
return;
va_start(ap, fmt);
cmdline_vdprintf(cl->s_out, fmt, ap);
va_end(ap);
}
int
cmdline_in(struct cmdline *cl, const char *buf, int size)
{
const char *history, *buffer;
size_t histlen, buflen;
int ret = 0;
int i, same;
if (!cl || !buf)
return -1;
for (i=0; i<size; i++) {
ret = rdline_char_in(&cl->rdl, buf[i]);
if (ret == RDLINE_RES_VALIDATED) {
buffer = rdline_get_buffer(&cl->rdl);
history = rdline_get_history_item(&cl->rdl, 0);
if (history) {
histlen = strnlen(history, RDLINE_BUF_SIZE);
same = !memcmp(buffer, history, histlen) &&
buffer[histlen] == '\n';
}
else
same = 0;
buflen = strnlen(buffer, RDLINE_BUF_SIZE);
if (buflen > 1 && !same)
rdline_add_history(&cl->rdl, buffer);
rdline_newline(&cl->rdl, cl->prompt);
}
else if (ret == RDLINE_RES_EOF)
return -1;
else if (ret == RDLINE_RES_EXITED)
return -1;
}
return i;
}
void
cmdline_quit(struct cmdline *cl)
{
if (!cl)
return;
cmdline_cancel(cl);
rdline_quit(&cl->rdl);
}
void
cmdline_interact(struct cmdline *cl)
{
char c;
if (!cl)
return;
c = -1;
while (1) {
if (cmdline_read_char(cl, &c) <= 0)
break;
if (cmdline_in(cl, &c, 1) < 0)
break;
}
}
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