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-rw-r--r--common/cli_readline.c498
1 files changed, 292 insertions, 206 deletions
diff --git a/common/cli_readline.c b/common/cli_readline.c
index e83743e90c..06b8d46504 100644
--- a/common/cli_readline.c
+++ b/common/cli_readline.c
@@ -89,6 +89,14 @@ static char hist_lines[HIST_MAX][HIST_SIZE + 1]; /* Save room for NULL */
#define add_idx_minus_one() ((hist_add_idx == 0) ? hist_max : hist_add_idx-1)
+static void getcmd_putchars(int count, int ch)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ getcmd_putch(ch);
+}
+
static void hist_init(void)
{
int i;
@@ -160,11 +168,10 @@ static char *hist_next(void)
return ret;
}
-#ifndef CONFIG_CMDLINE_EDITING
-static void cread_print_hist_list(void)
+void cread_print_hist_list(void)
{
int i;
- unsigned long n;
+ uint n;
n = hist_num - hist_max;
@@ -179,36 +186,35 @@ static void cread_print_hist_list(void)
i++;
}
}
-#endif /* CONFIG_CMDLINE_EDITING */
#define BEGINNING_OF_LINE() { \
- while (num) { \
+ while (cls->num) { \
getcmd_putch(CTL_BACKSPACE); \
- num--; \
+ cls->num--; \
} \
}
#define ERASE_TO_EOL() { \
- if (num < eol_num) { \
- printf("%*s", (int)(eol_num - num), ""); \
+ if (cls->num < cls->eol_num) { \
+ printf("%*s", (int)(cls->eol_num - cls->num), ""); \
do { \
getcmd_putch(CTL_BACKSPACE); \
- } while (--eol_num > num); \
+ } while (--cls->eol_num > cls->num); \
} \
}
-#define REFRESH_TO_EOL() { \
- if (num < eol_num) { \
- wlen = eol_num - num; \
- putnstr(buf + num, wlen); \
- num = eol_num; \
- } \
+#define REFRESH_TO_EOL() { \
+ if (cls->num < cls->eol_num) { \
+ uint wlen = cls->eol_num - cls->num; \
+ putnstr(buf + cls->num, wlen); \
+ cls->num = cls->eol_num; \
+ } \
}
-static void cread_add_char(char ichar, int insert, unsigned long *num,
- unsigned long *eol_num, char *buf, unsigned long len)
+static void cread_add_char(char ichar, int insert, uint *num,
+ uint *eol_num, char *buf, uint len)
{
- unsigned long wlen;
+ uint wlen;
/* room ??? */
if (insert || *num == *eol_num) {
@@ -239,8 +245,7 @@ static void cread_add_char(char ichar, int insert, unsigned long *num,
}
static void cread_add_str(char *str, int strsize, int insert,
- unsigned long *num, unsigned long *eol_num,
- char *buf, unsigned long len)
+ uint *num, uint *eol_num, char *buf, uint len)
{
while (strsize--) {
cread_add_char(*str, insert, num, eol_num, buf, len);
@@ -248,121 +253,115 @@ static void cread_add_str(char *str, int strsize, int insert,
}
}
-static int cread_line(const char *const prompt, char *buf, unsigned int *len,
- int timeout)
+int cread_line_process_ch(struct cli_line_state *cls, char ichar)
{
- struct cli_ch_state s_cch, *cch = &s_cch;
- unsigned long num = 0;
- unsigned long eol_num = 0;
- unsigned long wlen;
- char ichar;
- int insert = 1;
- int init_len = strlen(buf);
- int first = 1;
+ char *buf = cls->buf;
- cli_ch_init(cch);
-
- if (init_len)
- cread_add_str(buf, init_len, 1, &num, &eol_num, buf, *len);
-
- while (1) {
- /* Check for saved characters */
- ichar = cli_ch_process(cch, 0);
+ /* ichar=0x0 when error occurs in U-Boot getc */
+ if (!ichar)
+ return -EAGAIN;
- if (!ichar) {
- if (bootretry_tstc_timeout())
- return -2; /* timed out */
- if (first && timeout) {
- u64 etime = endtick(timeout);
-
- while (!tstc()) { /* while no incoming data */
- if (get_ticks() >= etime)
- return -2; /* timed out */
- schedule();
- }
- first = 0;
- }
+ if (ichar == '\n') {
+ putc('\n');
+ buf[cls->eol_num] = '\0'; /* terminate the string */
+ return 0;
+ }
- ichar = getcmd_getch();
- ichar = cli_ch_process(cch, ichar);
+ switch (ichar) {
+ case CTL_CH('a'):
+ BEGINNING_OF_LINE();
+ break;
+ case CTL_CH('c'): /* ^C - break */
+ *buf = '\0'; /* discard input */
+ return -EINTR;
+ case CTL_CH('f'):
+ if (cls->num < cls->eol_num) {
+ getcmd_putch(buf[cls->num]);
+ cls->num++;
}
-
- /* ichar=0x0 when error occurs in U-Boot getc */
- if (!ichar)
- continue;
-
- if (ichar == '\n') {
- putc('\n');
- break;
+ break;
+ case CTL_CH('b'):
+ if (cls->num) {
+ getcmd_putch(CTL_BACKSPACE);
+ cls->num--;
}
-
- switch (ichar) {
- case CTL_CH('a'):
- BEGINNING_OF_LINE();
- break;
- case CTL_CH('c'): /* ^C - break */
- *buf = '\0'; /* discard input */
- return -1;
- case CTL_CH('f'):
- if (num < eol_num) {
- getcmd_putch(buf[num]);
- num++;
- }
- break;
- case CTL_CH('b'):
- if (num) {
- getcmd_putch(CTL_BACKSPACE);
- num--;
+ break;
+ case CTL_CH('d'):
+ if (cls->num < cls->eol_num) {
+ uint wlen;
+
+ wlen = cls->eol_num - cls->num - 1;
+ if (wlen) {
+ memmove(&buf[cls->num], &buf[cls->num + 1],
+ wlen);
+ putnstr(buf + cls->num, wlen);
}
- break;
- case CTL_CH('d'):
- if (num < eol_num) {
- wlen = eol_num - num - 1;
- if (wlen) {
- memmove(&buf[num], &buf[num+1], wlen);
- putnstr(buf + num, wlen);
- }
- getcmd_putch(' ');
- do {
- getcmd_putch(CTL_BACKSPACE);
- } while (wlen--);
- eol_num--;
- }
- break;
- case CTL_CH('k'):
- ERASE_TO_EOL();
- break;
- case CTL_CH('e'):
- REFRESH_TO_EOL();
- break;
- case CTL_CH('o'):
- insert = !insert;
- break;
- case CTL_CH('x'):
- case CTL_CH('u'):
- BEGINNING_OF_LINE();
- ERASE_TO_EOL();
- break;
- case DEL:
- case DEL7:
- case 8:
- if (num) {
- wlen = eol_num - num;
- num--;
- memmove(&buf[num], &buf[num+1], wlen);
+ getcmd_putch(' ');
+ do {
getcmd_putch(CTL_BACKSPACE);
- putnstr(buf + num, wlen);
- getcmd_putch(' ');
- do {
- getcmd_putch(CTL_BACKSPACE);
- } while (wlen--);
- eol_num--;
- }
- break;
- case CTL_CH('p'):
- case CTL_CH('n'):
- {
+ } while (wlen--);
+ cls->eol_num--;
+ }
+ break;
+ case CTL_CH('k'):
+ ERASE_TO_EOL();
+ break;
+ case CTL_CH('e'):
+ REFRESH_TO_EOL();
+ break;
+ case CTL_CH('o'):
+ cls->insert = !cls->insert;
+ break;
+ case CTL_CH('w'):
+ if (cls->num) {
+ uint base, wlen;
+
+ for (base = cls->num - 1;
+ base >= 0 && buf[base] == ' ';)
+ base--;
+ for (; base > 0 && buf[base - 1] != ' ';)
+ base--;
+
+ /* now delete chars from base to cls->num */
+ wlen = cls->num - base;
+ cls->eol_num -= wlen;
+ memmove(&buf[base], &buf[cls->num],
+ cls->eol_num - base + 1);
+ cls->num = base;
+ getcmd_putchars(wlen, CTL_BACKSPACE);
+ puts(buf + base);
+ getcmd_putchars(wlen, ' ');
+ getcmd_putchars(wlen + cls->eol_num - cls->num,
+ CTL_BACKSPACE);
+ }
+ break;
+ case CTL_CH('x'):
+ case CTL_CH('u'):
+ BEGINNING_OF_LINE();
+ ERASE_TO_EOL();
+ break;
+ case DEL:
+ case DEL7:
+ case 8:
+ if (cls->num) {
+ uint wlen;
+
+ wlen = cls->eol_num - cls->num;
+ cls->num--;
+ memmove(&buf[cls->num], &buf[cls->num + 1], wlen);
+ getcmd_putch(CTL_BACKSPACE);
+ putnstr(buf + cls->num, wlen);
+ getcmd_putch(' ');
+ do {
+ getcmd_putch(CTL_BACKSPACE);
+ } while (wlen--);
+ cls->eol_num--;
+ }
+ break;
+ case CTL_CH('p'):
+ case CTL_CH('n'):
+ if (cls->history) {
char *hline;
if (ichar == CTL_CH('p'))
@@ -372,7 +371,7 @@ static int cread_line(const char *const prompt, char *buf, unsigned int *len,
if (!hline) {
getcmd_cbeep();
- continue;
+ break;
}
/* nuke the current line */
@@ -384,39 +383,106 @@ static int cread_line(const char *const prompt, char *buf, unsigned int *len,
/* copy new line into place and display */
strcpy(buf, hline);
- eol_num = strlen(buf);
+ cls->eol_num = strlen(buf);
REFRESH_TO_EOL();
- continue;
+ break;
}
-#ifdef CONFIG_AUTO_COMPLETE
- case '\t': {
+ break;
+ case '\t':
+ if (IS_ENABLED(CONFIG_AUTO_COMPLETE) && cls->cmd_complete) {
int num2, col;
/* do not autocomplete when in the middle */
- if (num < eol_num) {
+ if (cls->num < cls->eol_num) {
getcmd_cbeep();
break;
}
- buf[num] = '\0';
- col = strlen(prompt) + eol_num;
- num2 = num;
- if (cmd_auto_complete(prompt, buf, &num2, &col)) {
- col = num2 - num;
- num += col;
- eol_num += col;
+ buf[cls->num] = '\0';
+ col = strlen(cls->prompt) + cls->eol_num;
+ num2 = cls->num;
+ if (cmd_auto_complete(cls->prompt, buf, &num2, &col)) {
+ col = num2 - cls->num;
+ cls->num += col;
+ cls->eol_num += col;
}
break;
}
-#endif
- default:
- cread_add_char(ichar, insert, &num, &eol_num, buf,
- *len);
- break;
+ fallthrough;
+ default:
+ cread_add_char(ichar, cls->insert, &cls->num, &cls->eol_num,
+ buf, cls->len);
+ break;
+ }
+
+ /*
+ * keep the string terminated...if we added a char at the end then we
+ * want a \0 after it
+ */
+ buf[cls->eol_num] = '\0';
+
+ 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 first = 1;
+
+ cli_ch_init(cch);
+ cli_cread_init(cls, buf, *len);
+ cls->prompt = prompt;
+ cls->history = true;
+ cls->cmd_complete = true;
+
+ while (1) {
+ int ret;
+
+ /* Check for saved characters */
+ ichar = cli_ch_process(cch, 0);
+
+ if (!ichar) {
+ if (bootretry_tstc_timeout())
+ return -2; /* timed out */
+ if (first && timeout) {
+ u64 etime = endtick(timeout);
+
+ while (!tstc()) { /* while no incoming data */
+ if (get_ticks() >= etime)
+ return -2; /* timed out */
+ schedule();
+ }
+ first = 0;
+ }
+
+ ichar = getcmd_getch();
+ ichar = cli_ch_process(cch, ichar);
}
+
+ ret = cread_line_process_ch(cls, ichar);
+ if (ret == -EINTR)
+ return -1;
+ else if (!ret)
+ break;
}
- *len = eol_num;
- buf[eol_num] = '\0'; /* lose the newline */
+ *len = cls->eol_num;
if (buf[0] && buf[0] != CREAD_HIST_CHAR)
cread_add_to_hist(buf);
@@ -425,6 +491,18 @@ static int cread_line(const char *const prompt, char *buf, unsigned int *len,
return 0;
}
+#else /* !CONFIG_CMDLINE_EDITING */
+
+static inline void hist_init(void)
+{
+}
+
+static int cread_line(const char *const prompt, char *buf, unsigned int *len,
+ int timeout)
+{
+ return 0;
+}
+
#endif /* CONFIG_CMDLINE_EDITING */
/****************************************************************************/
@@ -440,41 +518,22 @@ int cli_readline(const char *const prompt)
return cli_readline_into_buffer(prompt, console_buffer, 0);
}
-
-int cli_readline_into_buffer(const char *const prompt, char *buffer,
- int timeout)
+/**
+ * cread_line_simple() - Simple (small) command-line reader
+ *
+ * This supports only basic editing, with no cursor movement
+ *
+ * @prompt: Prompt to display
+ * @p: Text buffer to edit
+ * Return: length of text buffer, or -1 if input was cannncelled (Ctrl-C)
+ */
+static int cread_line_simple(const char *const prompt, char *p)
{
- char *p = buffer;
-#ifdef CONFIG_CMDLINE_EDITING
- unsigned int len = CONFIG_SYS_CBSIZE;
- int rc;
- static int initted;
-
- /*
- * History uses a global array which is not
- * writable until after relocation to RAM.
- * Revert to non-history version if still
- * running from flash.
- */
- if (gd->flags & GD_FLG_RELOC) {
- if (!initted) {
- hist_init();
- initted = 1;
- }
-
- if (prompt)
- puts(prompt);
-
- rc = cread_line(prompt, p, &len, timeout);
- return rc < 0 ? rc : len;
-
- } else {
-#endif /* CONFIG_CMDLINE_EDITING */
char *p_buf = p;
- int n = 0; /* buffer index */
- int plen = 0; /* prompt length */
- int col; /* output column cnt */
- char c;
+ int n = 0; /* buffer index */
+ int plen = 0; /* prompt length */
+ int col; /* output column cnt */
+ char c;
/* print prompt */
if (prompt) {
@@ -528,14 +587,15 @@ int cli_readline_into_buffer(const char *const prompt, char *buffer,
continue;
default:
- /*
- * Must be a normal character then
- */
- if (n < CONFIG_SYS_CBSIZE-2) {
- if (c == '\t') { /* expand TABs */
-#ifdef CONFIG_AUTO_COMPLETE
+ /* Must be a normal character then */
+ if (n >= CONFIG_SYS_CBSIZE - 2) { /* Buffer full */
+ putc('\a');
+ break;
+ }
+ if (c == '\t') { /* expand TABs */
+ if (IS_ENABLED(CONFIG_AUTO_COMPLETE)) {
/*
- * if auto completion triggered just
+ * if auto-completion triggered just
* continue
*/
*p = '\0';
@@ -545,29 +605,55 @@ int cli_readline_into_buffer(const char *const prompt, char *buffer,
p = p_buf + n; /* reset */
continue;
}
-#endif
- puts(tab_seq + (col & 07));
- col += 8 - (col & 07);
- } else {
- char __maybe_unused buf[2];
-
- /*
- * Echo input using puts() to force an
- * LCD flush if we are using an LCD
- */
- ++col;
- buf[0] = c;
- buf[1] = '\0';
- puts(buf);
}
- *p++ = c;
- ++n;
- } else { /* Buffer full */
- putc('\a');
+ puts(tab_seq + (col & 07));
+ col += 8 - (col & 07);
+ } else {
+ char __maybe_unused buf[2];
+
+ /*
+ * Echo input using puts() to force an LCD
+ * flush if we are using an LCD
+ */
+ ++col;
+ buf[0] = c;
+ buf[1] = '\0';
+ puts(buf);
}
+ *p++ = c;
+ ++n;
+ break;
}
}
-#ifdef CONFIG_CMDLINE_EDITING
+}
+
+int cli_readline_into_buffer(const char *const prompt, char *buffer,
+ int timeout)
+{
+ char *p = buffer;
+ uint len = CONFIG_SYS_CBSIZE;
+ int rc;
+ static int initted;
+
+ /*
+ * History uses a global array which is not
+ * writable until after relocation to RAM.
+ * Revert to non-history version if still
+ * running from flash.
+ */
+ if (IS_ENABLED(CONFIG_CMDLINE_EDITING) && (gd->flags & GD_FLG_RELOC)) {
+ if (!initted) {
+ hist_init();
+ initted = 1;
+ }
+
+ if (prompt)
+ puts(prompt);
+
+ rc = cread_line(prompt, p, &len, timeout);
+ return rc < 0 ? rc : len;
+
+ } else {
+ return cread_line_simple(prompt, p);
}
-#endif
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-06-05 05:43:14 +0000