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cli: Add a function to set up a new cread

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Create a init function so that it is easy to use command-line reading.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2023-10-01 19:13:17 -06:00 committed by Tom Rini
parent 3b487bf511
commit 39ee32166f
2 changed files with 31 additions and 10 deletions
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24
common/cli_readline.c
View file

@ -424,28 +424,34 @@ int cread_line_process_ch(struct cli_line_state *cls, char ichar)
return -EAGAIN;
}
void cli_cread_init(struct cli_line_state *cls, char *buf, uint buf_size)
{
int init_len = strlen(buf);
memset(cls, '\0', sizeof(struct cli_line_state));
cls->insert = true;
cls->buf = buf;
cls->len = buf_size;
if (init_len)
cread_add_str(buf, init_len, 0, &cls->num, &cls->eol_num, buf,
buf_size);
}
static int cread_line(const char *const prompt, char *buf, unsigned int *len,
int timeout)
{
struct cli_ch_state s_cch, *cch = &s_cch;
struct cli_line_state s_cls, *cls = &s_cls;
char ichar;
int init_len = strlen(buf);
int first = 1;
cli_ch_init(cch);
memset(cls, '\0', sizeof(struct cli_line_state));
cls->insert = true;
cls->len = *len;
cli_cread_init(cls, buf, *len);
cls->prompt = prompt;
cls->buf = buf;
cls->history = true;
cls->cmd_complete = true;
if (init_len)
cread_add_str(buf, init_len, 1, &cls->num, &cls->eol_num, buf,
*len);
while (1) {
int ret;

17
include/cli.h
View file

@ -32,7 +32,8 @@ struct cli_ch_state {
* @eol_num: Number of characters in the buffer
* @insert: true if in 'insert' mode
* @history: true if history should be accessible
* @cmd_complete: true if tab completion should be enabled
* @cmd_complete: true if tab completion should be enabled (requires @prompt to
* be set)
* @buf: Buffer containing line
* @prompt: Prompt for the line
*/
@ -262,6 +263,20 @@ int cli_ch_process(struct cli_ch_state *cch, int ichar);
*/
int cread_line_process_ch(struct cli_line_state *cls, char ichar);
/**
* cli_cread_init() - Set up a new cread struct
*
* Sets up a new cread state, with history and cmd_complete set to false
*
* After calling this, you can use cread_line_process_ch() to process characters
* received from the user.
*
* @cls: CLI line state
* @buf: Text buffer containing the initial text
* @buf_size: Buffer size, including nul terminator
*/
void cli_cread_init(struct cli_line_state *cls, char *buf, uint buf_size);
/** cread_print_hist_list() - Print the command-line history list */
void cread_print_hist_list(void);