static void repl()
{
int argc, j;
char *line;
sds *argv;
config.interactive = 1;
linenoiseSetCompletionCallback(completionCallback);
while((line = linenoise(db ? "redislite> " : "not connected> ")) != NULL) {
if (line[0] != '\0') {
argv = sdssplitargs(line, &argc);
linenoiseHistoryAdd(line);
if (config.historyfile) {
linenoiseHistorySave(config.historyfile);
}
if (argv == NULL) {
printf("Invalid argument(s)\n");
continue;
}
else if (argc > 0) {
if (strcasecmp(argv[0], "quit") == 0 ||
strcasecmp(argv[0], "exit") == 0) {
exit(0);
}
else if (argc == 1 && !strcasecmp(argv[0], "clear")) {
linenoiseClearScreen();
}
else {
long long start_time = mstime(), elapsed;
if (cliSendCommand(argc, argv, 1) != REDISLITE_OK) {
cliConnect(1);
/* If we still cannot send the command,
* print error and abort. */
if (cliSendCommand(argc, argv, 1) != REDISLITE_OK) {
cliPrintContextErrorAndExit();
}
}
elapsed = mstime() - start_time;
if (elapsed >= 500) {
printf("(%.2fs)\n", (double)elapsed / 1000);
}
}
}
/* Free the argument vector */
for (j = 0; j < argc; j++) {
sdsfree(argv[j]);
}
redislite_free(argv);
}
/* linenoise() returns malloc-ed lines like readline() */
free(line);
}
exit(0);
}
int main(int argc, char** argv) {
/* Create parsers */
mpc_parser_t* Number = mpc_new("number");
mpc_parser_t* Operator = mpc_new("operator");
mpc_parser_t* Expression = mpc_new("expression");
mpc_parser_t* Lispy = mpc_new("lispy");
linenoiseClearScreen();
/* Define them with the language as follows */
mpca_lang(MPCA_LANG_DEFAULT,
" number : /-?[0-9]+/ ; "
" operator : '+' | '/' | '*' | '-' ; "
" expression : <number> | '(' <operator> <expression>+ ')' ; "
" lispy : /^/ <operator>* <expression> /$/ ; ", Number, Operator, Expression, Lispy);
char *line = NULL;
while((line = linenoise("Lispy> ")) != NULL ) {
mpc_result_t result;
if (mpc_parse("<stdin>" , line, Lispy, &result)) {
mpc_ast_print(result.output);
mpc_ast_delete(result.output);
} else {
mpc_err_print(result.output);
mpc_err_delete(result.output);
}
free(line);
}
mpc_cleanup(4, Number, Operator, Expression, Lispy);
return 0;
}
static int linenoisePrompt(int fd, char *buf, size_t buflen, const char *prompt) {
size_t plen = strlen(prompt);
size_t pos = 0;
size_t len = 0;
size_t cols = getColumns();
buf[0] = '\0';
buflen--; /* Make sure there is always space for the nulterm */
/* The latest history entry is always our current buffer, that
* initially is just an empty string. */
linenoiseHistoryAdd("");
history_index = history_len-1;
if (write(1,prompt,plen) == -1) return -1;
while(1) {
char c = linenoiseReadChar(fd);
if (c == 0) return len;
if (c == (char)-1) {
refreshLine(fd,prompt,buf,len,pos,cols);
continue;
}
/* Only autocomplete when the callback is set. It returns < 0 when
* there was an error reading from fd. Otherwise it will return the
* character that should be handled next. */
if (c == 9 && completionCallback != NULL) {
c = completeLine(fd,prompt,buf,buflen,&len,&pos,cols);
/* Return on errors */
if (c < 0) return len;
/* Read next character when 0 */
if (c == 0) continue;
}
switch(c) {
case 13: /* enter */
history_len--;
free(history[history_len]);
return (int)len;
case 3: /* ctrl-c */
errno = EAGAIN;
return -1;
case 127: /* delete */
if (len > 0 && pos < len) {
memmove(buf+pos,buf+pos+1,len-pos-1);
len--;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
case 8: /* backspace or ctrl-h */
if (pos > 0 && len > 0) {
memmove(buf+pos-1,buf+pos,len-pos);
pos--;
len--;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
case 4: /* ctrl-d, remove char at right of cursor */
if (len > 1 && pos < (len-1)) {
memmove(buf+pos,buf+pos+1,len-pos);
len--;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
} else if (len == 0) {
history_len--;
free(history[history_len]);
return -1;
}
break;
case 20: /* ctrl-t */
if (pos > 0 && pos < len) {
int aux = buf[pos-1];
buf[pos-1] = buf[pos];
buf[pos] = aux;
if (pos != len-1) pos++;
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
case 2: /* ctrl-b */ /* left arrow */
if (pos > 0) {
pos--;
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
case 6: /* ctrl-f */
/* right arrow */
if (pos != len) {
pos++;
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
case 16: /* ctrl-p */
case 14: /* ctrl-n */
/* up and down arrow: history */
if (history_len > 1) {
/* Update the current history entry before to
* overwrite it with tne next one. */
free(history[history_index]);
history[history_index] = strdup(buf);
/* Show the new entry */
history_index += (c == 16) ? -1 : 1;
if (history_index < 0) {
history_index = 0;
break;
} else if (history_index >= history_len) {
history_index = history_len-1;
break;
}
strncpy(buf,history[history_index],buflen);
buf[buflen] = '\0';
len = pos = strlen(buf);
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
case 27: /* escape sequence */
break; /* should be handled by linenoiseReadChar */
default:
if (len < buflen) {
if (len == pos) {
buf[pos] = c;
pos++;
len++;
buf[len] = '\0';
if (plen+len < cols) {
/* Avoid a full update of the line in the
* trivial case. */
if (write(1,&c,1) == -1) return -1;
} else {
refreshLine(fd,prompt,buf,len,pos,cols);
}
} else {
memmove(buf+pos+1,buf+pos,len-pos);
buf[pos] = c;
len++;
pos++;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
}
}
break;
case 21: /* Ctrl+u, delete the whole line. */
buf[0] = '\0';
pos = len = 0;
refreshLine(fd,prompt,buf,len,pos,cols);
break;
case 11: /* Ctrl+k, delete from current to end of line. */
buf[pos] = '\0';
len = pos;
refreshLine(fd,prompt,buf,len,pos,cols);
break;
case 1: /* Ctrl+a, go to the start of the line */
pos = 0;
refreshLine(fd,prompt,buf,len,pos,cols);
break;
case 5: /* ctrl+e, go to the end of the line */
pos = len;
refreshLine(fd,prompt,buf,len,pos,cols);
break;
case 12: /* ctrl+l, clear screen */
linenoiseClearScreen();
refreshLine(fd,prompt,buf,len,pos,cols);
}
}
return len;
}
static int linenoiseEdit(struct current *current) {
int history_index = 0;
/* The latest history entry is always our current buffer, that
* initially is just an empty string. */
linenoiseHistoryAdd("");
set_current(current, "");
refreshLine(current->prompt, current);
while(1) {
int dir = -1;
int c = fd_read(current);
#ifndef NO_COMPLETION
/* Only autocomplete when the callback is set. It returns < 0 when
* there was an error reading from fd. Otherwise it will return the
* character that should be handled next. */
if (c == '\t' && current->pos == current->chars && completionCallback != NULL) {
c = completeLine(current);
/* Return on errors */
if (c < 0) return current->len;
/* Read next character when 0 */
if (c == 0) continue;
}
#endif
process_char:
if (c == -1) return current->len;
#ifdef USE_TERMIOS
if (c == 27) { /* escape sequence */
c = check_special(current->fd);
}
#endif
switch(c) {
case '\r': /* enter */
history_len--;
free(history[history_len]);
return current->len;
case ctrl('C'): /* ctrl-c */
errno = EAGAIN;
return -1;
case 127: /* backspace */
case ctrl('H'):
if (remove_char(current, current->pos - 1) == 1) {
refreshLine(current->prompt, current);
}
break;
case ctrl('D'): /* ctrl-d */
if (current->len == 0) {
/* Empty line, so EOF */
history_len--;
free(history[history_len]);
return -1;
}
/* Otherwise fall through to delete char to right of cursor */
case SPECIAL_DELETE:
if (remove_char(current, current->pos) == 1) {
refreshLine(current->prompt, current);
}
break;
case SPECIAL_INSERT:
/* Ignore. Expansion Hook.
* Future possibility: Toggle Insert/Overwrite Modes
*/
break;
case ctrl('W'): /* ctrl-w, delete word at left. save deleted chars */
/* eat any spaces on the left */
{
int pos = current->pos;
while (pos > 0 && get_char(current, pos - 1) == ' ') {
pos--;
}
/* now eat any non-spaces on the left */
while (pos > 0 && get_char(current, pos - 1) != ' ') {
pos--;
}
if (remove_chars(current, pos, current->pos - pos)) {
refreshLine(current->prompt, current);
}
}
break;
case ctrl('R'): /* ctrl-r */
{
/* Display the reverse-i-search prompt and process chars */
char rbuf[50];
char rprompt[80];
int rchars = 0;
int rlen = 0;
int searchpos = history_len - 1;
rbuf[0] = 0;
while (1) {
int n = 0;
const char *p = NULL;
int skipsame = 0;
int searchdir = -1;
snprintf(rprompt, sizeof(rprompt), "(reverse-i-search)'%s': ", rbuf);
refreshLine(rprompt, current);
c = fd_read(current);
if (c == ctrl('H') || c == 127) {
if (rchars) {
int p = utf8_index(rbuf, --rchars);
rbuf[p] = 0;
rlen = strlen(rbuf);
}
continue;
}
#ifdef USE_TERMIOS
if (c == 27) {
c = check_special(current->fd);
}
#endif
if (c == ctrl('P') || c == SPECIAL_UP) {
/* Search for the previous (earlier) match */
if (searchpos > 0) {
searchpos--;
}
skipsame = 1;
}
else if (c == ctrl('N') || c == SPECIAL_DOWN) {
/* Search for the next (later) match */
if (searchpos < history_len) {
searchpos++;
}
searchdir = 1;
skipsame = 1;
}
else if (c >= ' ') {
if (rlen >= (int)sizeof(rbuf) + 3) {
continue;
}
n = utf8_getchars(rbuf + rlen, c);
rlen += n;
rchars++;
rbuf[rlen] = 0;
/* Adding a new char resets the search location */
searchpos = history_len - 1;
}
else {
/* Exit from incremental search mode */
break;
}
/* Now search through the history for a match */
for (; searchpos >= 0 && searchpos < history_len; searchpos += searchdir) {
p = strstr(history[searchpos], rbuf);
if (p) {
/* Found a match */
if (skipsame && strcmp(history[searchpos], current->buf) == 0) {
/* But it is identical, so skip it */
continue;
}
/* Copy the matching line and set the cursor position */
set_current(current,history[searchpos]);
current->pos = utf8_strlen(history[searchpos], p - history[searchpos]);
break;
}
}
if (!p && n) {
/* No match, so don't add it */
rchars--;
rlen -= n;
rbuf[rlen] = 0;
}
}
if (c == ctrl('G') || c == ctrl('C')) {
/* ctrl-g terminates the search with no effect */
set_current(current, "");
c = 0;
}
else if (c == ctrl('J')) {
/* ctrl-j terminates the search leaving the buffer in place */
c = 0;
}
/* Go process the char normally */
refreshLine(current->prompt, current);
goto process_char;
}
break;
case ctrl('T'): /* ctrl-t */
if (current->pos > 0 && current->pos <= current->chars) {
/* If cursor is at end, transpose the previous two chars */
int fixer = (current->pos == current->chars);
c = get_char(current, current->pos - fixer);
remove_char(current, current->pos - fixer);
insert_char(current, current->pos - 1, c);
refreshLine(current->prompt, current);
}
break;
case ctrl('V'): /* ctrl-v */
if (has_room(current, 3)) {
/* Insert the ^V first */
if (insert_char(current, current->pos, c)) {
refreshLine(current->prompt, current);
/* Now wait for the next char. Can insert anything except \0 */
c = fd_read(current);
/* Remove the ^V first */
remove_char(current, current->pos - 1);
if (c != -1) {
/* Insert the actual char */
insert_char(current, current->pos, c);
}
refreshLine(current->prompt, current);
}
}
break;
case ctrl('B'):
case SPECIAL_LEFT:
if (current->pos > 0) {
current->pos--;
refreshLine(current->prompt, current);
}
break;
case ctrl('F'):
case SPECIAL_RIGHT:
if (current->pos < current->chars) {
current->pos++;
refreshLine(current->prompt, current);
}
break;
case SPECIAL_PAGE_UP:
dir = history_len - history_index - 1; /* move to start of history */
goto history_navigation;
case SPECIAL_PAGE_DOWN:
dir = -history_index; /* move to 0 == end of history, i.e. current */
goto history_navigation;
case ctrl('P'):
case SPECIAL_UP:
dir = 1;
goto history_navigation;
case ctrl('N'):
case SPECIAL_DOWN:
history_navigation:
if (history_len > 1) {
/* Update the current history entry before to
* overwrite it with tne next one. */
free(history[history_len - 1 - history_index]);
history[history_len - 1 - history_index] = strdup(current->buf);
/* Show the new entry */
history_index += dir;
if (history_index < 0) {
history_index = 0;
break;
} else if (history_index >= history_len) {
history_index = history_len - 1;
break;
}
set_current(current, history[history_len - 1 - history_index]);
refreshLine(current->prompt, current);
}
break;
case ctrl('A'): /* Ctrl+a, go to the start of the line */
case SPECIAL_HOME:
current->pos = 0;
refreshLine(current->prompt, current);
break;
case ctrl('E'): /* ctrl+e, go to the end of the line */
case SPECIAL_END:
current->pos = current->chars;
refreshLine(current->prompt, current);
break;
case ctrl('U'): /* Ctrl+u, delete to beginning of line, save deleted chars. */
if (remove_chars(current, 0, current->pos)) {
refreshLine(current->prompt, current);
}
break;
case ctrl('K'): /* Ctrl+k, delete from current to end of line, save deleted chars. */
if (remove_chars(current, current->pos, current->chars - current->pos)) {
refreshLine(current->prompt, current);
}
break;
case ctrl('Y'): /* Ctrl+y, insert saved chars at current position */
if (current->capture && insert_chars(current, current->pos, current->capture)) {
refreshLine(current->prompt, current);
}
break;
case ctrl('L'): /* Ctrl+L, clear screen */
linenoiseClearScreen();
/* Force recalc of window size for serial terminals */
current->cols = 0;
refreshLine(current->prompt, current);
break;
default:
/* Only tab is allowed without ^V */
if (c == '\t' || c >= ' ') {
if (insert_char(current, current->pos, c) == 1) {
refreshLine(current->prompt, current);
}
}
break;
}
}
return current->len;
}
static int l_clearscreen(lua_State *L)
{
linenoiseClearScreen();
return handle_ln_ok(L);
}
static int linenoisePrompt(int fd, char *buf, size_t buflen, const char *prompt) {
size_t plen = strlen(prompt);
size_t pos = 0;
size_t len = 0;
size_t cols = getColumns();
int history_index = 0;
#ifdef _WIN32
DWORD foo;
#endif
buf[0] = '\0';
buflen--; /* Make sure there is always space for the nulterm */
/* The latest history entry is always our current buffer, that
* initially is just an empty string. */
linenoiseHistoryAdd("");
#ifdef _WIN32
if (!WriteConsole(hOut, prompt, (DWORD)plen, &foo, NULL)) return -1;
#else
if (write(fd,prompt,plen) == -1) return -1;
#endif
while(1) {
char c;
int nread;
char seq[2], seq2[2];
#ifdef _WIN32
nread = win32read(&c);
#else
nread = read(fd,&c,1);
#endif
if (nread <= 0) return (int)len;
/* Only autocomplete when the callback is set. It returns < 0 when
* there was an error reading from fd. Otherwise it will return the
* character that should be handled next. */
if (c == 9 && completionCallback != NULL) {
c = completeLine(fd,prompt,buf,buflen,&len,&pos,cols);
/* Return on errors */
if (c < 0) return (int)len;
/* Read next character when 0 */
if (c == 0) continue;
}
switch(c) {
case 13: /* enter */
history_len--;
free(history[history_len]);
return (int)len;
case 3: /* ctrl-c */
errno = EAGAIN;
return -1;
case 127: /* backspace */
#ifdef _WIN32
/* delete in _WIN32*/
/* win32read() will send 127 for DEL and 8 for BS and Ctrl-H */
if (pos < len && len > 0) {
memmove(buf+pos,buf+pos+1,len-pos);
len--;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
#endif
case 8: /* ctrl-h */
if (pos > 0 && len > 0) {
memmove(buf+pos-1,buf+pos,len-pos);
pos--;
len--;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
case 4: /* ctrl-d, remove char at right of cursor */
if (len > 1 && pos < (len-1)) {
memmove(buf+pos,buf+pos+1,len-pos);
len--;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
} else if (len == 0) {
history_len--;
free(history[history_len]);
return -1;
}
break;
case 20: /* ctrl-t */
if (pos > 0 && pos < len) {
int aux = buf[pos-1];
buf[pos-1] = buf[pos];
buf[pos] = aux;
if (pos != len-1) pos++;
refreshLine(fd,prompt,buf,len,pos,cols);
}
break;
case 2: /* ctrl-b */
goto left_arrow;
case 6: /* ctrl-f */
goto right_arrow;
case 16: /* ctrl-p */
seq[1] = 65;
goto up_down_arrow;
case 14: /* ctrl-n */
seq[1] = 66;
goto up_down_arrow;
break;
case 27: /* escape sequence */
if (read(fd,seq,2) == -1) break;
if (seq[0] == 91 && seq[1] == 68) {
left_arrow:
/* left arrow */
if (pos > 0) {
pos--;
refreshLine(fd,prompt,buf,len,pos,cols);
}
} else if (seq[0] == 91 && seq[1] == 67) {
right_arrow:
/* right arrow */
if (pos != len) {
pos++;
refreshLine(fd,prompt,buf,len,pos,cols);
}
} else if (seq[0] == 91 && (seq[1] == 65 || seq[1] == 66)) {
up_down_arrow:
/* up and down arrow: history */
if (history_len > 1) {
/* Update the current history entry before to
* overwrite it with tne next one. */
free(history[history_len-1-history_index]);
history[history_len-1-history_index] = strdup(buf);
/* Show the new entry */
history_index += (seq[1] == 65) ? 1 : -1;
if (history_index < 0) {
history_index = 0;
break;
} else if (history_index >= history_len) {
history_index = history_len-1;
break;
}
strncpy(buf,history[history_len-1-history_index],buflen);
buf[buflen] = '\0';
len = pos = strlen(buf);
refreshLine(fd,prompt,buf,len,pos,cols);
}
} else if (seq[0] == 91 && seq[1] > 48 && seq[1] < 55) {
/* extended escape */
if (read(fd,seq2,2) == -1) break;
if (seq[1] == 51 && seq2[0] == 126) {
/* delete */
if (len > 0 && pos < len) {
memmove(buf+pos,buf+pos+1,len-pos-1);
len--;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
}
}
}
break;
default:
if (len < buflen) {
if (len == pos) {
buf[pos] = c;
pos++;
len++;
buf[len] = '\0';
if (plen+len < cols) {
/* Avoid a full update of the line in the
* trivial case. */
#ifdef _WIN32
if (!WriteConsole(hOut, &c, 1, &foo, NULL)) return -1;
#else
if (write(fd,&c,1) == -1) return -1;
#endif
} else {
refreshLine(fd,prompt,buf,len,pos,cols);
}
} else {
memmove(buf+pos+1,buf+pos,len-pos);
buf[pos] = c;
len++;
pos++;
buf[len] = '\0';
refreshLine(fd,prompt,buf,len,pos,cols);
}
}
break;
case 21: /* Ctrl+u, delete the whole line. */
buf[0] = '\0';
pos = len = 0;
refreshLine(fd,prompt,buf,len,pos,cols);
break;
case 11: /* Ctrl+k, delete from current to end of line. */
buf[pos] = '\0';
len = pos;
refreshLine(fd,prompt,buf,len,pos,cols);
break;
case 1: /* Ctrl+a, go to the start of the line */
pos = 0;
refreshLine(fd,prompt,buf,len,pos,cols);
break;
case 5: /* ctrl+e, go to the end of the line */
pos = len;
refreshLine(fd,prompt,buf,len,pos,cols);
break;
case 12: /* ctrl+l, clear screen */
linenoiseClearScreen();
refreshLine(fd,prompt,buf,len,pos,cols);
}
}
return (int)len;
}
static void repl() {
sds historyfile = NULL;
int history = 0;
char *line;
int argc;
sds *argv;
config.interactive = 1;
linenoiseSetCompletionCallback(completionCallback);
/* Only use history when stdin is a tty. */
if (isatty(fileno(stdin))) {
history = 1;
if (getenv("HOME") != NULL) {
historyfile = sdscatprintf(sdsempty(),"%s/.rediscli_history",getenv("HOME"));
linenoiseHistoryLoad(historyfile);
}
}
cliRefreshPrompt();
while((line = linenoise(context ? config.prompt : "not connected> ")) != NULL) {
if (line[0] != '\0') {
argv = sdssplitargs(line,&argc);
if (history) linenoiseHistoryAdd(line);
if (historyfile) linenoiseHistorySave(historyfile);
if (argv == NULL) {
printf("Invalid argument(s)\n");
free(line);
continue;
} else if (argc > 0) {
if (strcasecmp(argv[0],"quit") == 0 ||
strcasecmp(argv[0],"exit") == 0)
{
exit(0);
} else if (argc == 3 && !strcasecmp(argv[0],"connect")) {
sdsfree(config.hostip);
config.hostip = sdsnew(argv[1]);
config.hostport = atoi(argv[2]);
cliConnect(1);
} else if (argc == 1 && !strcasecmp(argv[0],"clear")) {
linenoiseClearScreen();
} else {
long long start_time = mstime(), elapsed;
int repeat, skipargs = 0;
repeat = atoi(argv[0]);
if (argc > 1 && repeat) {
skipargs = 1;
} else {
repeat = 1;
}
while (1) {
config.cluster_reissue_command = 0;
if (cliSendCommand(argc-skipargs,argv+skipargs,repeat)
!= REDIS_OK)
{
cliConnect(1);
/* If we still cannot send the command print error.
* We'll try to reconnect the next time. */
if (cliSendCommand(argc-skipargs,argv+skipargs,repeat)
!= REDIS_OK)
cliPrintContextError();
}
/* Issue the command again if we got redirected in cluster mode */
if (config.cluster_mode && config.cluster_reissue_command) {
cliConnect(1);
} else {
break;
}
}
elapsed = mstime()-start_time;
if (elapsed >= 500) {
printf("(%.2fs)\n",(double)elapsed/1000);
}
}
}
/* Free the argument vector */
while(argc--) sdsfree(argv[argc]);
zfree(argv);
}
/* linenoise() returns malloc-ed lines like readline() */
free(line);
}
exit(0);
}
static int linenoiseEdit(char *buf, size_t buflen, const char *prompt)
{
struct linenoiseState l = {
.buf = buf, .buflen = buflen,
.prompt = prompt, .plen = strlen(prompt),
.oldpos = 0, .pos = 0,
.len = 0,
.cols = 80, .maxrows = 0,
.history_index = 0,
};
/* Buffer starts empty. */
buf[0] = '\0';
buflen--; /* Make sure there is always space for the nulterm */
/* The latest history entry is always our current buffer, that
* initially is just an empty string. */
linenoiseHistoryAdd("");
serial.puts(prompt);
while (1) {
char c;
char seq[2] = {0};
c = serial.getc();
/* Only autocomplete when the callback is set. */
if (c == 9 && completionCallback != NULL) {
c = completeLine(&l);
/* Return on errors */
if (c < 0) return l.len;
/* Read next character when 0 */
if (c == 0) continue;
}
switch (c) {
case ENTER: /* enter */
history_len--;
free(history[history_len]);
return (int)l.len;
case CTRL_C:
return -1;
case BACKSPACE: /* backspace */
case CTRL_H: /* ctrl-h */
linenoiseEditBackspace(&l);
break;
case CTRL_D: /* ctrl-d, remove char at right of cursor, or of the
line is empty, act as end-of-file. */
if (l.len > 0) {
linenoiseEditDelete(&l);
} else {
history_len--;
free(history[history_len]);
return -1;
}
break;
case CTRL_T: /* ctrl-t, swaps current character with previous. */
if (l.pos > 0 && l.pos < l.len) {
int aux = buf[l.pos - 1];
buf[l.pos - 1] = buf[l.pos];
buf[l.pos] = aux;
if (l.pos != l.len - 1) l.pos++;
refreshLine(&l);
}
break;
case CTRL_B: /* ctrl-b */
linenoiseEditMoveLeft(&l);
break;
case CTRL_F: /* ctrl-f */
linenoiseEditMoveRight(&l);
break;
case CTRL_P: /* ctrl-p */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_PREV);
break;
case CTRL_N: /* ctrl-n */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_NEXT);
break;
/* escape sequence */
case ESC:
seq[0] = serial.getc();
seq[1] = serial.getc();
if (seq[0] == ARROW_PREFIX && seq[1] == LEFT_ARROW) {
/* Left arrow */
linenoiseEditMoveLeft(&l);
} else if (seq[0] == ARROW_PREFIX && seq[1] == RIGHT_ARROW) {
/* Right arrow */
linenoiseEditMoveRight(&l);
} else if (seq[0] == ARROW_PREFIX && (seq[1] == UP_ARROW || seq[1] == DOWN_ARROW)) {
/* Up and Down arrows */
linenoiseEditHistoryNext(&l,
(seq[1] == UP_ARROW) ? LINENOISE_HISTORY_PREV :
LINENOISE_HISTORY_NEXT);
}
//Here is also a extanded escape!
break;
default:
linenoiseEditInsert(&l, c);
break;
case CTRL_U: /* Ctrl+u, delete the whole line. */
buf[0] = '\0';
l.pos = l.len = 0;
refreshLine(&l);
break;
case CTRL_K: /* Ctrl+k, delete from current to end of line. */
buf[l.pos] = '\0';
l.len = l.pos;
refreshLine(&l);
break;
case CTRL_A: /* Ctrl+a, go to the start of the line */
l.pos = 0;
refreshLine(&l);
break;
case CTRL_E: /* ctrl+e, go to the end of the line */
l.pos = l.len;
refreshLine(&l);
break;
case CTRL_L: /* ctrl+l, clear screen */
linenoiseClearScreen();
refreshLine(&l);
break;
case CTRL_W: /* ctrl+w, delete previous word */
linenoiseEditDeletePrevWord(&l);
break;
}
}
return l.len;
}
static int linenoiseRaw(char *buf, size_t buflen, const char *prompt)
{
int count;
count = linenoiseEdit(buf, buflen, prompt);
serial.puts("\n\r");
return count;
}
/* This function is the core of the line editing capability of linenoise.
* It expects 'fd' to be already in "raw mode" so that every key pressed
* will be returned ASAP to read().
*
* The resulting string is put into 'buf' when the user type enter, or
* when ctrl+d is typed.
*
* The function returns the length of the current buffer. */
static int linenoiseEdit(int stdin_fd, int stdout_fd, char *buf, size_t buflen, char *prompt)
{
struct linenoiseState l;
/* Populate the linenoise state that we pass to functions implementing
* specific editing functionalities. */
l.ifd = stdin_fd;
l.ofd = stdout_fd;
l.buf = buf;
l.buflen = buflen;
l.prompt = prompt;
l.plen = strlen(prompt);
l.oldpos = l.pos = 0;
l.len = 0;
l.cols = getColumns(stdin_fd, stdout_fd);
l.maxrows = 0;
l.history_index = 0;
/* Buffer starts empty. */
l.buf[0] = '\0';
l.buflen--; /* Make sure there is always space for the nulterm */
/* The latest history entry is always our current buffer, that
* initially is just an empty string. */
linenoiseHistoryAdd("");
if (write(l.ofd,prompt,l.plen) == -1) return -1;
while(1) {
char c;
int nread;
char seq[3];
nread = read(l.ifd,&c,1);
if (nread <= 0) return l.len;
/* Only autocomplete when the callback is set. It returns < 0 when
* there was an error reading from fd. Otherwise it will return the
* character that should be handled next. */
if (c == 9 && completionCallback != NULL) {
c = completeLine(&l);
/* Return on errors */
if (c < 0) return l.len;
/* Read next character when 0 */
if (c == 0) continue;
}
switch(c) {
case ENTER: /* enter */
history_len--;
free(history[history_len]);
if (mlmode) linenoiseEditMoveEnd(&l);
return (int)l.len;
case CTRL_C: /* ctrl-c */
errno = EAGAIN;
return -1;
case BACKSPACE: /* backspace */
case 8: /* ctrl-h */
linenoiseEditBackspace(&l);
break;
case CTRL_D: /* ctrl-d, remove char at right of cursor, or if the
line is empty, act as end-of-file. */
if (l.len > 0) {
linenoiseEditDelete(&l);
} else {
history_len--;
free(history[history_len]);
return -1;
}
break;
case CTRL_T: /* ctrl-t, swaps current character with previous. */
if (l.pos > 0 && l.pos < l.len) {
int aux = buf[l.pos-1];
buf[l.pos-1] = buf[l.pos];
buf[l.pos] = aux;
if (l.pos != l.len-1) l.pos++;
refreshLine(&l);
}
break;
case CTRL_B: /* ctrl-b */
linenoiseEditMoveLeft(&l);
break;
case CTRL_F: /* ctrl-f */
linenoiseEditMoveRight(&l);
break;
case CTRL_P: /* ctrl-p */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_PREV);
break;
case CTRL_N: /* ctrl-n */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_NEXT);
break;
case ESC: /* escape sequence */
/* Read the next two bytes representing the escape sequence.
* Use two calls to handle slow terminals returning the two
* chars at different times. */
if (read(l.ifd,seq,1) == -1) break;
if (read(l.ifd,seq+1,1) == -1) break;
/* ESC [ sequences. */
if (seq[0] == '[') {
if (seq[1] >= '0' && seq[1] <= '9') {
/* Extended escape, read additional byte. */
if (read(l.ifd,seq+2,1) == -1) break;
if (seq[2] == '~') {
switch(seq[1]) {
case '3': /* Delete key. */
linenoiseEditDelete(&l);
break;
}
}
} else {
switch(seq[1]) {
case 'A': /* Up */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_PREV);
break;
case 'B': /* Down */
linenoiseEditHistoryNext(&l, LINENOISE_HISTORY_NEXT);
break;
case 'C': /* Right */
linenoiseEditMoveRight(&l);
break;
case 'D': /* Left */
linenoiseEditMoveLeft(&l);
break;
case 'H': /* Home */
linenoiseEditMoveHome(&l);
break;
case 'F': /* End*/
linenoiseEditMoveEnd(&l);
break;
}
}
}
/* ESC O sequences. */
else if (seq[0] == 'O') {
switch(seq[1]) {
case 'H': /* Home */
linenoiseEditMoveHome(&l);
break;
case 'F': /* End*/
linenoiseEditMoveEnd(&l);
break;
}
}
break;
default:
if (linenoiseEditInsert(&l,c)) return -1;
break;
case CTRL_U: /* Ctrl+u, delete the whole line. */
buf[0] = '\0';
l.pos = l.len = 0;
refreshLine(&l);
break;
case CTRL_K: /* Ctrl+k, delete from current to end of line. */
buf[l.pos] = '\0';
l.len = l.pos;
refreshLine(&l);
break;
case CTRL_A: /* Ctrl+a, go to the start of the line */
linenoiseEditMoveHome(&l);
break;
case CTRL_E: /* ctrl+e, go to the end of the line */
linenoiseEditMoveEnd(&l);
break;
case CTRL_L: /* ctrl+l, clear screen */
linenoiseClearScreen();
refreshLine(&l);
break;
case CTRL_W: /* ctrl+w, delete previous word */
linenoiseEditDeletePrevWord(&l);
break;
}
}
return l.len;
}
void lineedit_clear_screen()
{
linenoiseClearScreen();
refreshLine(&l);
}
void Console::clearScreen()
{
linenoiseClearScreen();
}
