/**
* @brief Reads a whole line from the input channel.
* @note Input chars are echoed on the same stream object with the
* following exceptions:
* - DEL and BS are echoed as BS-SPACE-BS.
* - CR is echoed as CR-LF.
* - 0x4 is echoed as "^D".
* - Other values below 0x20 are not echoed.
* .
*
* @param[in] chp pointer to a @p BaseSequentialStream object
* @param[in] line pointer to the line buffer
* @param[in] size buffer maximum length
* @return The operation status.
* @retval true the channel was reset or CTRL-D pressed.
* @retval false operation successful.
*
* @api
*/
bool shellGetLine(BaseSequentialStream *chp, char *line, unsigned size) {
char *p = line;
while (true) {
char c;
if (streamRead(chp, (uint8_t *)&c, 1) == 0)
return true;
if (c == 4) {
chprintf(chp, "^D");
return true;
}
if ((c == 8) || (c == 127)) {
if (p != line) {
streamPut(chp, c);
streamPut(chp, 0x20);
streamPut(chp, c);
p--;
}
continue;
}
if (c == '\r') {
chprintf(chp, "\r\n");
*p = 0;
return false;
}
if (c < 0x20)
continue;
if (p < line + size - 1) {
streamPut(chp, c);
*p++ = (char)c;
}
}
}
/**
* @brief Prints a decimal unsigned number.
*
* @param[in] n the number to be printed
*
* @api
*/
void test_printn(uint32_t n) {
char buf[16], *p;
if (!n)
streamPut(test_chp, '0');
else {
p = buf;
while (n)
*p++ = (n % 10) + '0', n /= 10;
while (p > buf)
streamPut(test_chp, *--p);
}
}
static void print_line(void) {
unsigned i;
for (i = 0; i < 76; i++)
streamPut(test_chp, '-');
streamWrite(test_chp, (const uint8_t *)"\r\n", 2);
}
/**
* @brief System formatted output function.
* @details This function implements a minimal @p vprintf()-like functionality
* with output on a @p BaseSequentialStream.
* The general parameters format is: %[-][width|*][.precision|*][l|L]p.
* The following parameter types (p) are supported:
* - <b>x</b> hexadecimal integer.
* - <b>X</b> hexadecimal long.
* - <b>o</b> octal integer.
* - <b>O</b> octal long.
* - <b>d</b> decimal signed integer.
* - <b>D</b> decimal signed long.
* - <b>u</b> decimal unsigned integer.
* - <b>U</b> decimal unsigned long.
* - <b>c</b> character.
* - <b>s</b> string.
* .
*
* @param[in] chp pointer to a @p BaseSequentialStream implementing object
* @param[in] fmt formatting string
* @param[in] ap list of parameters
* @return The number of bytes that would have been
* written to @p chp if no stream error occurs
*
* @api
*/
int chvprintf(BaseSequentialStream *chp, const char *fmt, va_list ap) {
char *p, *s, c, filler;
int i, precision, width;
int n = 0;
bool is_long, left_align;
long l;
#if CHPRINTF_USE_FLOAT
float f;
char tmpbuf[2*MAX_FILLER + 1];
#else
char tmpbuf[MAX_FILLER + 1];
#endif
while (true) {
c = *fmt++;
if (c == 0)
return n;
if (c != '%') {
streamPut(chp, (uint8_t)c);
n++;
continue;
}
p = tmpbuf;
s = tmpbuf;
left_align = FALSE;
if (*fmt == '-') {
fmt++;
left_align = TRUE;
}
filler = ' ';
if (*fmt == '0') {
fmt++;
filler = '0';
}
width = 0;
while (TRUE) {
c = *fmt++;
if (c >= '0' && c <= '9')
c -= '0';
else if (c == '*')
c = va_arg(ap, int);
else
break;
width = width * 10 + c;
}
precision = 0;
if (c == '.') {
while (TRUE) {
c = *fmt++;
if (c >= '0' && c <= '9')
c -= '0';
else if (c == '*')
c = va_arg(ap, int);
else
break;
precision *= 10;
precision += c;
}
}
/**
* @brief Reads a whole line from the input channel.
* @note Input chars are echoed on the same stream object with the
* following exceptions:
* - DEL and BS are echoed as BS-SPACE-BS.
* - CR is echoed as CR-LF.
* - 0x4 is echoed as "^D".
* - Other values below 0x20 are not echoed.
* .
*
* @param[in] chp pointer to a @p BaseSequentialStream object
* @param[in] line pointer to the line buffer
* @param[in] size buffer maximum length
* @return The operation status.
* @retval true the channel was reset or CTRL-D pressed.
* @retval false operation successful.
*
* @api
*/
bool shellGetLine(BaseSequentialStream *chp, char *line, unsigned size) {
char *p = line;
while (true) {
char c;
if (streamRead(chp, (uint8_t *)&c, 1) == 0)
return true;
#if (SHELL_CMD_EXIT_ENABLED == TRUE) && !defined(_CHIBIOS_NIL_)
if (c == 4) {
chprintf(chp, "^D");
return true;
}
#endif
if ((c == 8) || (c == 127)) {
if (p != line) {
streamPut(chp, c);
streamPut(chp, 0x20);
streamPut(chp, c);
p--;
}
continue;
}
if (c == '\r') {
chprintf(chp, "\r\n");
*p = 0;
return false;
}
if (c < 0x20)
continue;
if (p < line + size - 1) {
streamPut(chp, c);
*p++ = (char)c;
}
}
}
/**
* @brief Reads a whole line from the input channel.
* @note Input chars are echoed on the same stream object with the
* following exceptions:
* - DEL and BS are echoed as BS-SPACE-BS.
* - CR is echoed as CR-LF.
* - 0x4 is echoed as "^D".
* - Other values below 0x20 are not echoed.
* .
*
* @param[in] scfg pointer to a @p ShellConfig object
* @param[in] line pointer to the line buffer
* @param[in] size buffer maximum length
* @param[in] shp pointer to a @p ShellHistory object or NULL
* @return The operation status.
* @retval true the channel was reset or CTRL-D pressed.
* @retval false operation successful.
*
* @api
*/
bool shellGetLine(ShellConfig *scfg, char *line, unsigned size, ShellHistory *shp) {
char *p = line;
BaseSequentialStream *chp = scfg->sc_channel;
#if SHELL_USE_ESC_SEQ == TRUE
bool escape = false;
bool bracket = false;
#endif
#if SHELL_USE_HISTORY != TRUE
(void) shp;
#endif
while (true) {
char c;
if (streamRead(chp, (uint8_t *)&c, 1) == 0)
return true;
#if SHELL_USE_ESC_SEQ == TRUE
if (c == 27) {
escape = true;
continue;
}
if (escape) {
escape = false;
if (c == '[') {
escape = true;
bracket = true;
continue;
}
if (bracket) {
bracket = false;
#if SHELL_USE_HISTORY == TRUE
if (c == 'A') {
int len = get_history(shp, line, SHELL_HIST_DIR_BK);
if (len > 0) {
_shell_reset_cur(chp);
_shell_clr_line(chp);
chprintf(chp, "%s", line);
p = line + len;
}
continue;
}
if (c == 'B') {
int len = get_history(shp, line, SHELL_HIST_DIR_FW);
if (len == 0)
*line = 0;
if (len >= 0) {
_shell_reset_cur(chp);
_shell_clr_line(chp);
chprintf(chp, "%s", line);
p = line + len;
}
continue;
}
#endif
}
continue;
}
#endif
#if (SHELL_CMD_EXIT_ENABLED == TRUE) && !defined(_CHIBIOS_NIL_)
if (c == 4) {
chprintf(chp, "^D");
return true;
}
#endif
if ((c == 8) || (c == 127)) {
if (p != line) {
streamPut(chp, 0x08);
streamPut(chp, 0x20);
streamPut(chp, 0x08);
p--;
}
continue;
}
if (c == '\r') {
chprintf(chp, SHELL_NEWLINE_STR);
#if SHELL_USE_HISTORY == TRUE
save_history(shp, line, p - line);
#endif
*p = 0;
return false;
}
#if SHELL_USE_COMPLETION == TRUE
if (c == '\t') {
if (p < line + size - 1) {
*p = 0;
get_completions(scfg, line);
int len = process_completions(scfg, line, p - line, size);
if (len > 0) {
write_completions(scfg, line, p - line);
p = line + len;
}
}
continue;
}
#endif
#if SHELL_USE_HISTORY == TRUE
if (c == 14) {
int len = get_history(shp, line, SHELL_HIST_DIR_FW);
if (len == 0)
*line = 0;
if (len >= 0) {
_shell_reset_cur(chp);
_shell_clr_line(chp);
chprintf(chp, "%s", line);
p = line + len;
}
continue;
}
if (c == 16) {
int len = get_history(shp, line, SHELL_HIST_DIR_BK);
if (len > 0) {
_shell_reset_cur(chp);
_shell_clr_line(chp);
chprintf(chp, "%s", line);
p = line + len;
}
continue;
}
#endif
if (c < 0x20)
continue;
if (p < line + size - 1) {
streamPut(chp, c);
*p++ = (char)c;
}
}
}
StringBuilderImpl<Allocator>& operator<<(StringBuilderImpl<Allocator>& os, Nanoseconds ns) {
return streamPut(os, ns);
}
StringBuilderImpl<Allocator>& operator<<(StringBuilderImpl<Allocator>& os, Milliseconds ms) {
return streamPut(os, ms);
}
static void print_tokens(void) {
char *cp = test_tokens_buffer;
while (cp < test_tokp)
streamPut(test_chp, *cp++);
}
std::ostream& operator<<(std::ostream& os, Seconds s) {
return streamPut(os, s);
}
std::ostream& operator<<(std::ostream& os, Milliseconds ms) {
return streamPut(os, ms);
}
std::ostream& operator<<(std::ostream& os, Microseconds us) {
return streamPut(os, us);
}
std::ostream& operator<<(std::ostream& os, Nanoseconds ns) {
return streamPut(os, ns);
}
StringBuilderImpl<Allocator>& operator<<(StringBuilderImpl<Allocator>& os, Hours h) {
return streamPut(os, h);
}
StringBuilderImpl<Allocator>& operator<<(StringBuilderImpl<Allocator>& os, Minutes m) {
return streamPut(os, m);
}
StringBuilderImpl<Allocator>& operator<<(StringBuilderImpl<Allocator>& os, Seconds s) {
return streamPut(os, s);
}
/**
* @brief Prints a line without final end-of-line.
*
* @param[in] msgp the message
*
* @api
*/
void test_print(const char *msgp) {
while (*msgp)
streamPut(test_chp, *msgp++);
}
std::ostream& operator<<(std::ostream& os, Minutes m) {
return streamPut(os, m);
}
std::ostream& operator<<(std::ostream& os, Hours h) {
return streamPut(os, h);
}
StringBuilderImpl<Allocator>& operator<<(StringBuilderImpl<Allocator>& os, Microseconds us) {
return streamPut(os, us);
}
