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hostap/src/utils/edit.c
Jouni Malinen 21611ea9fd edit: Increase buffer size to 4096 bytes 
wpa_supplicant and wpa_cli had already moved to allowing up to 4096 byte
buffer size to be used for control interface commands. This was limited
by the line edit buffer in interactive mode. Increase that limit to
match the other buffers to avoid artificially truncating long commands.

Signed-off-by: Jouni Malinen <j@w1.fi>
2014-03-31 12:30:50 +03:00

1175 lines
20 KiB
C
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/*
* Command line editing and history
* Copyright (c) 2010-2011, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include <termios.h>
#include "common.h"
#include "eloop.h"
#include "list.h"
#include "edit.h"
#define CMD_BUF_LEN 4096
static char cmdbuf[CMD_BUF_LEN];
static int cmdbuf_pos = 0;
static int cmdbuf_len = 0;
static char currbuf[CMD_BUF_LEN];
static int currbuf_valid = 0;
static const char *ps2 = NULL;
#define HISTORY_MAX 100
struct edit_history {
struct dl_list list;
char str[1];
};
static struct dl_list history_list;
static struct edit_history *history_curr;
static void *edit_cb_ctx;
static void (*edit_cmd_cb)(void *ctx, char *cmd);
static void (*edit_eof_cb)(void *ctx);
static char ** (*edit_completion_cb)(void *ctx, const char *cmd, int pos) =
NULL;
static struct termios prevt, newt;
#define CLEAR_END_LINE "\e[K"
void edit_clear_line(void)
{
int i;
putchar('\r');
for (i = 0; i < cmdbuf_len + 2 + (ps2 ? (int) os_strlen(ps2) : 0); i++)
putchar(' ');
}
static void move_start(void)
{
cmdbuf_pos = 0;
edit_redraw();
}
static void move_end(void)
{
cmdbuf_pos = cmdbuf_len;
edit_redraw();
}
static void move_left(void)
{
if (cmdbuf_pos > 0) {
cmdbuf_pos--;
edit_redraw();
}
}
static void move_right(void)
{
if (cmdbuf_pos < cmdbuf_len) {
cmdbuf_pos++;
edit_redraw();
}
}
static void move_word_left(void)
{
while (cmdbuf_pos > 0 && cmdbuf[cmdbuf_pos - 1] == ' ')
cmdbuf_pos--;
while (cmdbuf_pos > 0 && cmdbuf[cmdbuf_pos - 1] != ' ')
cmdbuf_pos--;
edit_redraw();
}
static void move_word_right(void)
{
while (cmdbuf_pos < cmdbuf_len && cmdbuf[cmdbuf_pos] == ' ')
cmdbuf_pos++;
while (cmdbuf_pos < cmdbuf_len && cmdbuf[cmdbuf_pos] != ' ')
cmdbuf_pos++;
edit_redraw();
}
static void delete_left(void)
{
if (cmdbuf_pos == 0)
return;
edit_clear_line();
os_memmove(cmdbuf + cmdbuf_pos - 1, cmdbuf + cmdbuf_pos,
cmdbuf_len - cmdbuf_pos);
cmdbuf_pos--;
cmdbuf_len--;
edit_redraw();
}
static void delete_current(void)
{
if (cmdbuf_pos == cmdbuf_len)
return;
edit_clear_line();
os_memmove(cmdbuf + cmdbuf_pos, cmdbuf + cmdbuf_pos + 1,
cmdbuf_len - cmdbuf_pos);
cmdbuf_len--;
edit_redraw();
}
static void delete_word(void)
{
int pos;
edit_clear_line();
pos = cmdbuf_pos;
while (pos > 0 && cmdbuf[pos - 1] == ' ')
pos--;
while (pos > 0 && cmdbuf[pos - 1] != ' ')
pos--;
os_memmove(cmdbuf + pos, cmdbuf + cmdbuf_pos, cmdbuf_len - cmdbuf_pos);
cmdbuf_len -= cmdbuf_pos - pos;
cmdbuf_pos = pos;
edit_redraw();
}
static void clear_left(void)
{
if (cmdbuf_pos == 0)
return;
edit_clear_line();
os_memmove(cmdbuf, cmdbuf + cmdbuf_pos, cmdbuf_len - cmdbuf_pos);
cmdbuf_len -= cmdbuf_pos;
cmdbuf_pos = 0;
edit_redraw();
}
static void clear_right(void)
{
if (cmdbuf_pos == cmdbuf_len)
return;
edit_clear_line();
cmdbuf_len = cmdbuf_pos;
edit_redraw();
}
static void history_add(const char *str)
{
struct edit_history *h, *match = NULL, *last = NULL;
size_t len, count = 0;
if (str[0] == '\0')
return;
dl_list_for_each(h, &history_list, struct edit_history, list) {
if (os_strcmp(str, h->str) == 0) {
match = h;
break;
}
last = h;
count++;
}
if (match) {
dl_list_del(&h->list);
dl_list_add(&history_list, &h->list);
history_curr = h;
return;
}
if (count >= HISTORY_MAX && last) {
dl_list_del(&last->list);
os_free(last);
}
len = os_strlen(str);
h = os_zalloc(sizeof(*h) + len);
if (h == NULL)
return;
dl_list_add(&history_list, &h->list);
os_strlcpy(h->str, str, len + 1);
history_curr = h;
}
static void history_use(void)
{
edit_clear_line();
cmdbuf_len = cmdbuf_pos = os_strlen(history_curr->str);
os_memcpy(cmdbuf, history_curr->str, cmdbuf_len);
edit_redraw();
}
static void history_prev(void)
{
if (history_curr == NULL)
return;
if (history_curr ==
dl_list_first(&history_list, struct edit_history, list)) {
if (!currbuf_valid) {
cmdbuf[cmdbuf_len] = '\0';
os_memcpy(currbuf, cmdbuf, cmdbuf_len + 1);
currbuf_valid = 1;
history_use();
return;
}
}
if (history_curr ==
dl_list_last(&history_list, struct edit_history, list))
return;
history_curr = dl_list_entry(history_curr->list.next,
struct edit_history, list);
history_use();
}
static void history_next(void)
{
if (history_curr == NULL ||
history_curr ==
dl_list_first(&history_list, struct edit_history, list)) {
if (currbuf_valid) {
currbuf_valid = 0;
edit_clear_line();
cmdbuf_len = cmdbuf_pos = os_strlen(currbuf);
os_memcpy(cmdbuf, currbuf, cmdbuf_len);
edit_redraw();
}
return;
}
history_curr = dl_list_entry(history_curr->list.prev,
struct edit_history, list);
history_use();
}
static void history_read(const char *fname)
{
FILE *f;
char buf[CMD_BUF_LEN], *pos;
f = fopen(fname, "r");
if (f == NULL)
return;
while (fgets(buf, CMD_BUF_LEN, f)) {
for (pos = buf; *pos; pos++) {
if (*pos == '\r' || *pos == '\n') {
*pos = '\0';
break;
}
}
history_add(buf);
}
fclose(f);
}
static void history_write(const char *fname,
int (*filter_cb)(void *ctx, const char *cmd))
{
FILE *f;
struct edit_history *h;
f = fopen(fname, "w");
if (f == NULL)
return;
dl_list_for_each_reverse(h, &history_list, struct edit_history, list) {
if (filter_cb && filter_cb(edit_cb_ctx, h->str))
continue;
fprintf(f, "%s\n", h->str);
}
fclose(f);
}
static void history_debug_dump(void)
{
struct edit_history *h;
edit_clear_line();
printf("\r");
dl_list_for_each_reverse(h, &history_list, struct edit_history, list)
printf("%s%s\n", h == history_curr ? "[C]" : "", h->str);
if (currbuf_valid)
printf("{%s}\n", currbuf);
edit_redraw();
}
static void insert_char(int c)
{
if (cmdbuf_len >= (int) sizeof(cmdbuf) - 1)
return;
if (cmdbuf_len == cmdbuf_pos) {
cmdbuf[cmdbuf_pos++] = c;
cmdbuf_len++;
putchar(c);
fflush(stdout);
} else {
os_memmove(cmdbuf + cmdbuf_pos + 1, cmdbuf + cmdbuf_pos,
cmdbuf_len - cmdbuf_pos);
cmdbuf[cmdbuf_pos++] = c;
cmdbuf_len++;
edit_redraw();
}
}
static void process_cmd(void)
{
currbuf_valid = 0;
if (cmdbuf_len == 0) {
printf("\n%s> ", ps2 ? ps2 : "");
fflush(stdout);
return;
}
printf("\n");
cmdbuf[cmdbuf_len] = '\0';
history_add(cmdbuf);
cmdbuf_pos = 0;
cmdbuf_len = 0;
edit_cmd_cb(edit_cb_ctx, cmdbuf);
printf("%s> ", ps2 ? ps2 : "");
fflush(stdout);
}
static void free_completions(char **c)
{
int i;
if (c == NULL)
return;
for (i = 0; c[i]; i++)
os_free(c[i]);
os_free(c);
}
static int filter_strings(char **c, char *str, size_t len)
{
int i, j;
for (i = 0, j = 0; c[j]; j++) {
if (os_strncasecmp(c[j], str, len) == 0) {
if (i != j) {
c[i] = c[j];
c[j] = NULL;
}
i++;
} else {
os_free(c[j]);
c[j] = NULL;
}
}
c[i] = NULL;
return i;
}
static int common_len(const char *a, const char *b)
{
int len = 0;
while (a[len] && a[len] == b[len])
len++;
return len;
}
static int max_common_length(char **c)
{
int len, i;
len = os_strlen(c[0]);
for (i = 1; c[i]; i++) {
int same = common_len(c[0], c[i]);
if (same < len)
len = same;
}
return len;
}
static int cmp_str(const void *a, const void *b)
{
return os_strcmp(* (const char **) a, * (const char **) b);
}
static void complete(int list)
{
char **c;
int i, len, count;
int start, end;
int room, plen, add_space;
if (edit_completion_cb == NULL)
return;
cmdbuf[cmdbuf_len] = '\0';
c = edit_completion_cb(edit_cb_ctx, cmdbuf, cmdbuf_pos);
if (c == NULL)
return;
end = cmdbuf_pos;
start = end;
while (start > 0 && cmdbuf[start - 1] != ' ')
start--;
plen = end - start;
count = filter_strings(c, &cmdbuf[start], plen);
if (count == 0) {
free_completions(c);
return;
}
len = max_common_length(c);
if (len <= plen && count > 1) {
if (list) {
qsort(c, count, sizeof(char *), cmp_str);
edit_clear_line();
printf("\r");
for (i = 0; c[i]; i++)
printf("%s%s", i > 0 ? " " : "", c[i]);
printf("\n");
edit_redraw();
}
free_completions(c);
return;
}
len -= plen;
room = sizeof(cmdbuf) - 1 - cmdbuf_len;
if (room < len)
len = room;
add_space = count == 1 && len < room;
os_memmove(cmdbuf + cmdbuf_pos + len + add_space, cmdbuf + cmdbuf_pos,
cmdbuf_len - cmdbuf_pos);
os_memcpy(&cmdbuf[cmdbuf_pos - plen], c[0], plen + len);
if (add_space)
cmdbuf[cmdbuf_pos + len] = ' ';
cmdbuf_pos += len + add_space;
cmdbuf_len += len + add_space;
edit_redraw();
free_completions(c);
}
enum edit_key_code {
EDIT_KEY_NONE = 256,
EDIT_KEY_TAB,
EDIT_KEY_UP,
EDIT_KEY_DOWN,
EDIT_KEY_RIGHT,
EDIT_KEY_LEFT,
EDIT_KEY_ENTER,
EDIT_KEY_BACKSPACE,
EDIT_KEY_INSERT,
EDIT_KEY_DELETE,
EDIT_KEY_HOME,
EDIT_KEY_END,
EDIT_KEY_PAGE_UP,
EDIT_KEY_PAGE_DOWN,
EDIT_KEY_F1,
EDIT_KEY_F2,
EDIT_KEY_F3,
EDIT_KEY_F4,
EDIT_KEY_F5,
EDIT_KEY_F6,
EDIT_KEY_F7,
EDIT_KEY_F8,
EDIT_KEY_F9,
EDIT_KEY_F10,
EDIT_KEY_F11,
EDIT_KEY_F12,
EDIT_KEY_CTRL_UP,
EDIT_KEY_CTRL_DOWN,
EDIT_KEY_CTRL_RIGHT,
EDIT_KEY_CTRL_LEFT,
EDIT_KEY_CTRL_A,
EDIT_KEY_CTRL_B,
EDIT_KEY_CTRL_D,
EDIT_KEY_CTRL_E,
EDIT_KEY_CTRL_F,
EDIT_KEY_CTRL_G,
EDIT_KEY_CTRL_H,
EDIT_KEY_CTRL_J,
EDIT_KEY_CTRL_K,
EDIT_KEY_CTRL_L,
EDIT_KEY_CTRL_N,
EDIT_KEY_CTRL_O,
EDIT_KEY_CTRL_P,
EDIT_KEY_CTRL_R,
EDIT_KEY_CTRL_T,
EDIT_KEY_CTRL_U,
EDIT_KEY_CTRL_V,
EDIT_KEY_CTRL_W,
EDIT_KEY_ALT_UP,
EDIT_KEY_ALT_DOWN,
EDIT_KEY_ALT_RIGHT,
EDIT_KEY_ALT_LEFT,
EDIT_KEY_SHIFT_UP,
EDIT_KEY_SHIFT_DOWN,
EDIT_KEY_SHIFT_RIGHT,
EDIT_KEY_SHIFT_LEFT,
EDIT_KEY_ALT_SHIFT_UP,
EDIT_KEY_ALT_SHIFT_DOWN,
EDIT_KEY_ALT_SHIFT_RIGHT,
EDIT_KEY_ALT_SHIFT_LEFT,
EDIT_KEY_EOF
};
static void show_esc_buf(const char *esc_buf, char c, int i)
{
edit_clear_line();
printf("\rESC buffer '%s' c='%c' [%d]\n", esc_buf, c, i);
edit_redraw();
}
static enum edit_key_code esc_seq_to_key1_no(char last)
{
switch (last) {
case 'A':
return EDIT_KEY_UP;
case 'B':
return EDIT_KEY_DOWN;
case 'C':
return EDIT_KEY_RIGHT;
case 'D':
return EDIT_KEY_LEFT;
default:
return EDIT_KEY_NONE;
}
}
static enum edit_key_code esc_seq_to_key1_shift(char last)
{
switch (last) {
case 'A':
return EDIT_KEY_SHIFT_UP;
case 'B':
return EDIT_KEY_SHIFT_DOWN;
case 'C':
return EDIT_KEY_SHIFT_RIGHT;
case 'D':
return EDIT_KEY_SHIFT_LEFT;
default:
return EDIT_KEY_NONE;
}
}
static enum edit_key_code esc_seq_to_key1_alt(char last)
{
switch (last) {
case 'A':
return EDIT_KEY_ALT_UP;
case 'B':
return EDIT_KEY_ALT_DOWN;
case 'C':
return EDIT_KEY_ALT_RIGHT;
case 'D':
return EDIT_KEY_ALT_LEFT;
default:
return EDIT_KEY_NONE;
}
}
static enum edit_key_code esc_seq_to_key1_alt_shift(char last)
{
switch (last) {
case 'A':
return EDIT_KEY_ALT_SHIFT_UP;
case 'B':
return EDIT_KEY_ALT_SHIFT_DOWN;
case 'C':
return EDIT_KEY_ALT_SHIFT_RIGHT;
case 'D':
return EDIT_KEY_ALT_SHIFT_LEFT;
default:
return EDIT_KEY_NONE;
}
}
static enum edit_key_code esc_seq_to_key1_ctrl(char last)
{
switch (last) {
case 'A':
return EDIT_KEY_CTRL_UP;
case 'B':
return EDIT_KEY_CTRL_DOWN;
case 'C':
return EDIT_KEY_CTRL_RIGHT;
case 'D':
return EDIT_KEY_CTRL_LEFT;
default:
return EDIT_KEY_NONE;
}
}
static enum edit_key_code esc_seq_to_key1(int param1, int param2, char last)
{
/* ESC-[<param1>;<param2><last> */
if (param1 < 0 && param2 < 0)
return esc_seq_to_key1_no(last);
if (param1 == 1 && param2 == 2)
return esc_seq_to_key1_shift(last);
if (param1 == 1 && param2 == 3)
return esc_seq_to_key1_alt(last);
if (param1 == 1 && param2 == 4)
return esc_seq_to_key1_alt_shift(last);
if (param1 == 1 && param2 == 5)
return esc_seq_to_key1_ctrl(last);
if (param2 < 0) {
if (last != '~')
return EDIT_KEY_NONE;
switch (param1) {
case 2:
return EDIT_KEY_INSERT;
case 3:
return EDIT_KEY_DELETE;
case 5:
return EDIT_KEY_PAGE_UP;
case 6:
return EDIT_KEY_PAGE_DOWN;
case 15:
return EDIT_KEY_F5;
case 17:
return EDIT_KEY_F6;
case 18:
return EDIT_KEY_F7;
case 19:
return EDIT_KEY_F8;
case 20:
return EDIT_KEY_F9;
case 21:
return EDIT_KEY_F10;
case 23:
return EDIT_KEY_F11;
case 24:
return EDIT_KEY_F12;
}
}
return EDIT_KEY_NONE;
}
static enum edit_key_code esc_seq_to_key2(int param1, int param2, char last)
{
/* ESC-O<param1>;<param2><last> */
if (param1 >= 0 || param2 >= 0)
return EDIT_KEY_NONE;
switch (last) {
case 'F':
return EDIT_KEY_END;
case 'H':
return EDIT_KEY_HOME;
case 'P':
return EDIT_KEY_F1;
case 'Q':
return EDIT_KEY_F2;
case 'R':
return EDIT_KEY_F3;
case 'S':
return EDIT_KEY_F4;
default:
return EDIT_KEY_NONE;
}
}
static enum edit_key_code esc_seq_to_key(char *seq)
{
char last, *pos;
int param1 = -1, param2 = -1;
enum edit_key_code ret = EDIT_KEY_NONE;
last = '\0';
for (pos = seq; *pos; pos++)
last = *pos;
if (seq[1] >= '0' && seq[1] <= '9') {
param1 = atoi(&seq[1]);
pos = os_strchr(seq, ';');
if (pos)
param2 = atoi(pos + 1);
}
if (seq[0] == '[')
ret = esc_seq_to_key1(param1, param2, last);
else if (seq[0] == 'O')
ret = esc_seq_to_key2(param1, param2, last);
if (ret != EDIT_KEY_NONE)
return ret;
edit_clear_line();
printf("\rUnknown escape sequence '%s'\n", seq);
edit_redraw();
return EDIT_KEY_NONE;
}
static enum edit_key_code edit_read_key(int sock)
{
int c;
unsigned char buf[1];
int res;
static int esc = -1;
static char esc_buf[7];
res = read(sock, buf, 1);
if (res < 0)
perror("read");
if (res <= 0)
return EDIT_KEY_EOF;
c = buf[0];
if (esc >= 0) {
if (c == 27 /* ESC */) {
esc = 0;
return EDIT_KEY_NONE;
}
if (esc == 6) {
show_esc_buf(esc_buf, c, 0);
esc = -1;
} else {
esc_buf[esc++] = c;
esc_buf[esc] = '\0';
}
}
if (esc == 1) {
if (esc_buf[0] != '[' && esc_buf[0] != 'O') {
show_esc_buf(esc_buf, c, 1);
esc = -1;
return EDIT_KEY_NONE;
} else
return EDIT_KEY_NONE; /* Escape sequence continues */
}
if (esc > 1) {
if ((c >= '0' && c <= '9') || c == ';')
return EDIT_KEY_NONE; /* Escape sequence continues */
if (c == '~' || (c >= 'A' && c <= 'Z')) {
esc = -1;
return esc_seq_to_key(esc_buf);
}
show_esc_buf(esc_buf, c, 2);
esc = -1;
return EDIT_KEY_NONE;
}
switch (c) {
case 1:
return EDIT_KEY_CTRL_A;
case 2:
return EDIT_KEY_CTRL_B;
case 4:
return EDIT_KEY_CTRL_D;
case 5:
return EDIT_KEY_CTRL_E;
case 6:
return EDIT_KEY_CTRL_F;
case 7:
return EDIT_KEY_CTRL_G;
case 8:
return EDIT_KEY_CTRL_H;
case 9:
return EDIT_KEY_TAB;
case 10:
return EDIT_KEY_CTRL_J;
case 13: /* CR */
return EDIT_KEY_ENTER;
case 11:
return EDIT_KEY_CTRL_K;
case 12:
return EDIT_KEY_CTRL_L;
case 14:
return EDIT_KEY_CTRL_N;
case 15:
return EDIT_KEY_CTRL_O;
case 16:
return EDIT_KEY_CTRL_P;
case 18:
return EDIT_KEY_CTRL_R;
case 20:
return EDIT_KEY_CTRL_T;
case 21:
return EDIT_KEY_CTRL_U;
case 22:
return EDIT_KEY_CTRL_V;
case 23:
return EDIT_KEY_CTRL_W;
case 27: /* ESC */
esc = 0;
return EDIT_KEY_NONE;
case 127:
return EDIT_KEY_BACKSPACE;
default:
return c;
}
}
static char search_buf[21];
static int search_skip;
static char * search_find(void)
{
struct edit_history *h;
size_t len = os_strlen(search_buf);
int skip = search_skip;
if (len == 0)
return NULL;
dl_list_for_each(h, &history_list, struct edit_history, list) {
if (os_strstr(h->str, search_buf)) {
if (skip == 0)
return h->str;
skip--;
}
}
search_skip = 0;
return NULL;
}
static void search_redraw(void)
{
char *match = search_find();
printf("\rsearch '%s': %s" CLEAR_END_LINE,
search_buf, match ? match : "");
printf("\rsearch '%s", search_buf);
fflush(stdout);
}
static void search_start(void)
{
edit_clear_line();
search_buf[0] = '\0';
search_skip = 0;
search_redraw();
}
static void search_clear(void)
{
search_redraw();
printf("\r" CLEAR_END_LINE);
}
static void search_stop(void)
{
char *match = search_find();
search_buf[0] = '\0';
search_clear();
if (match) {
os_strlcpy(cmdbuf, match, CMD_BUF_LEN);
cmdbuf_len = os_strlen(cmdbuf);
cmdbuf_pos = cmdbuf_len;
}
edit_redraw();
}
static void search_cancel(void)
{
search_buf[0] = '\0';
search_clear();
edit_redraw();
}
static void search_backspace(void)
{
size_t len;
len = os_strlen(search_buf);
if (len == 0)
return;
search_buf[len - 1] = '\0';
search_skip = 0;
search_redraw();
}
static void search_next(void)
{
search_skip++;
search_find();
search_redraw();
}
static void search_char(char c)
{
size_t len;
len = os_strlen(search_buf);
if (len == sizeof(search_buf) - 1)
return;
search_buf[len] = c;
search_buf[len + 1] = '\0';
search_skip = 0;
search_redraw();
}
static enum edit_key_code search_key(enum edit_key_code c)
{
switch (c) {
case EDIT_KEY_ENTER:
case EDIT_KEY_CTRL_J:
case EDIT_KEY_LEFT:
case EDIT_KEY_RIGHT:
case EDIT_KEY_HOME:
case EDIT_KEY_END:
case EDIT_KEY_CTRL_A:
case EDIT_KEY_CTRL_E:
search_stop();
return c;
case EDIT_KEY_DOWN:
case EDIT_KEY_UP:
search_cancel();
return EDIT_KEY_EOF;
case EDIT_KEY_CTRL_H:
case EDIT_KEY_BACKSPACE:
search_backspace();
break;
case EDIT_KEY_CTRL_R:
search_next();
break;
default:
if (c >= 32 && c <= 255)
search_char(c);
break;
}
return EDIT_KEY_NONE;
}
static void edit_read_char(int sock, void *eloop_ctx, void *sock_ctx)
{
static int last_tab = 0;
static int search = 0;
enum edit_key_code c;
c = edit_read_key(sock);
if (search) {
c = search_key(c);
if (c == EDIT_KEY_NONE)
return;
search = 0;
if (c == EDIT_KEY_EOF)
return;
}
if (c != EDIT_KEY_TAB && c != EDIT_KEY_NONE)
last_tab = 0;
switch (c) {
case EDIT_KEY_NONE:
break;
case EDIT_KEY_EOF:
edit_eof_cb(edit_cb_ctx);
break;
case EDIT_KEY_TAB:
complete(last_tab);
last_tab = 1;
break;
case EDIT_KEY_UP:
case EDIT_KEY_CTRL_P:
history_prev();
break;
case EDIT_KEY_DOWN:
case EDIT_KEY_CTRL_N:
history_next();
break;
case EDIT_KEY_RIGHT:
case EDIT_KEY_CTRL_F:
move_right();
break;
case EDIT_KEY_LEFT:
case EDIT_KEY_CTRL_B:
move_left();
break;
case EDIT_KEY_CTRL_RIGHT:
move_word_right();
break;
case EDIT_KEY_CTRL_LEFT:
move_word_left();
break;
case EDIT_KEY_DELETE:
delete_current();
break;
case EDIT_KEY_END:
move_end();
break;
case EDIT_KEY_HOME:
case EDIT_KEY_CTRL_A:
move_start();
break;
case EDIT_KEY_F2:
history_debug_dump();
break;
case EDIT_KEY_CTRL_D:
if (cmdbuf_len > 0) {
delete_current();
return;
}
printf("\n");
edit_eof_cb(edit_cb_ctx);
break;
case EDIT_KEY_CTRL_E:
move_end();
break;
case EDIT_KEY_CTRL_H:
case EDIT_KEY_BACKSPACE:
delete_left();
break;
case EDIT_KEY_ENTER:
case EDIT_KEY_CTRL_J:
process_cmd();
break;
case EDIT_KEY_CTRL_K:
clear_right();
break;
case EDIT_KEY_CTRL_L:
edit_clear_line();
edit_redraw();
break;
case EDIT_KEY_CTRL_R:
search = 1;
search_start();
break;
case EDIT_KEY_CTRL_U:
clear_left();
break;
case EDIT_KEY_CTRL_W:
delete_word();
break;
default:
if (c >= 32 && c <= 255)
insert_char(c);
break;
}
}
int edit_init(void (*cmd_cb)(void *ctx, char *cmd),
void (*eof_cb)(void *ctx),
char ** (*completion_cb)(void *ctx, const char *cmd, int pos),
void *ctx, const char *history_file, const char *ps)
{
currbuf[0] = '\0';
dl_list_init(&history_list);
history_curr = NULL;
if (history_file)
history_read(history_file);
edit_cb_ctx = ctx;
edit_cmd_cb = cmd_cb;
edit_eof_cb = eof_cb;
edit_completion_cb = completion_cb;
tcgetattr(STDIN_FILENO, &prevt);
newt = prevt;
newt.c_lflag &= ~(ICANON | ECHO);
tcsetattr(STDIN_FILENO, TCSANOW, &newt);
eloop_register_read_sock(STDIN_FILENO, edit_read_char, NULL, NULL);
ps2 = ps;
printf("%s> ", ps2 ? ps2 : "");
fflush(stdout);
return 0;
}
void edit_deinit(const char *history_file,
int (*filter_cb)(void *ctx, const char *cmd))
{
struct edit_history *h;
if (history_file)
history_write(history_file, filter_cb);
while ((h = dl_list_first(&history_list, struct edit_history, list))) {
dl_list_del(&h->list);
os_free(h);
}
edit_clear_line();
putchar('\r');
fflush(stdout);
eloop_unregister_read_sock(STDIN_FILENO);
tcsetattr(STDIN_FILENO, TCSANOW, &prevt);
}
void edit_redraw(void)
{
char tmp;
cmdbuf[cmdbuf_len] = '\0';
printf("\r%s> %s", ps2 ? ps2 : "", cmdbuf);
if (cmdbuf_pos != cmdbuf_len) {
tmp = cmdbuf[cmdbuf_pos];
cmdbuf[cmdbuf_pos] = '\0';
printf("\r%s> %s", ps2 ? ps2 : "", cmdbuf);
cmdbuf[cmdbuf_pos] = tmp;
}
fflush(stdout);
}
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