static void readline_backword(ReadLineState *rs)
{
int start;
if (rs->cmd_buf_index == 0 || rs->cmd_buf_index > rs->cmd_buf_size) {
return;
}
start = rs->cmd_buf_index - 1;
/* find first word (backwards) */
while (start > 0) {
if (!qemu_isspace(rs->cmd_buf[start])) {
break;
}
--start;
}
/* find first space (backwards) */
while (start > 0) {
if (qemu_isspace(rs->cmd_buf[start])) {
++start;
break;
}
--start;
}
/* remove word */
if (start < rs->cmd_buf_index) {
memmove(rs->cmd_buf + start,
rs->cmd_buf + rs->cmd_buf_index,
rs->cmd_buf_size - rs->cmd_buf_index);
rs->cmd_buf_size -= rs->cmd_buf_index - start;
rs->cmd_buf_index = start;
}
}
static void term_backword(void)
{
int start;
if (term_cmd_buf_index == 0 || term_cmd_buf_index > term_cmd_buf_size) {
return;
}
start = term_cmd_buf_index - 1;
/* find first word (backwards) */
while (start > 0) {
if (!qemu_isspace(term_cmd_buf[start])) {
break;
}
--start;
}
/* find first space (backwards) */
while (start > 0) {
if (qemu_isspace(term_cmd_buf[start])) {
++start;
break;
}
--start;
}
/* remove word */
if (start < term_cmd_buf_index) {
memmove(term_cmd_buf + start,
term_cmd_buf + term_cmd_buf_index,
term_cmd_buf_size - term_cmd_buf_index);
term_cmd_buf_size -= term_cmd_buf_index - start;
term_cmd_buf_index = start;
}
}
static int get_tag_value(char *buf, int buf_size,
const char *str, const char *tag,
const char *stopchars)
{
const char *p;
char *q;
p = strstr(str, tag);
if (!p)
return -1;
p += strlen(tag);
while (qemu_isspace(*p))
p++;
q = buf;
while (*p != '\0' && !strchr(stopchars, *p)) {
if ((q - buf) < (buf_size - 1))
*q++ = *p;
p++;
}
*q = '\0';
return q - buf;
}
/*
* Convert string to bytes, allowing either B/b for bytes, K/k for KB,
* M/m for MB, G/g for GB or T/t for TB. Default without any postfix
* is MB. End pointer will be returned in *end, if not NULL. A valid
* value must be terminated by whitespace, ',' or '\0'. Return -1 on
* error.
*/
int64_t strtosz_suffix(const char *nptr, char **end, const char default_suffix)
{
int64_t retval = -1;
char *endptr;
unsigned char c, d;
int mul_required = 0;
double val, mul, integral, fraction;
errno = 0;
val = strtod(nptr, &endptr);
if (isnan(val) || endptr == nptr || errno != 0) {
goto fail;
}
fraction = modf(val, &integral);
if (fraction != 0) {
mul_required = 1;
}
/*
* Any whitespace character is fine for terminating the number,
* in addition we accept ',' to handle strings where the size is
* part of a multi token argument.
*/
c = *endptr;
d = c;
if (qemu_isspace(c) || c == '\0' || c == ',') {
c = 0;
if (default_suffix) {
d = default_suffix;
} else {
d = c;
}
}
switch (qemu_toupper(d)) {
case STRTOSZ_DEFSUFFIX_B:
mul = 1;
if (mul_required) {
goto fail;
}
break;
case STRTOSZ_DEFSUFFIX_KB:
mul = 1 << 10;
break;
case 0:
if (mul_required) {
goto fail;
}
case STRTOSZ_DEFSUFFIX_MB:
mul = 1ULL << 20;
break;
case STRTOSZ_DEFSUFFIX_GB:
mul = 1ULL << 30;
break;
case STRTOSZ_DEFSUFFIX_TB:
mul = 1ULL << 40;
break;
default:
goto fail;
}
/*
* If not terminated by whitespace, ',', or \0, increment endptr
* to point to next character, then check that we are terminated
* by an appropriate separating character, ie. whitespace, ',', or
* \0. If not, we are seeing trailing garbage, thus fail.
*/
if (c != 0) {
endptr++;
if (!qemu_isspace(*endptr) && *endptr != ',' && *endptr != 0) {
goto fail;
}
}
if ((val * mul >= INT64_MAX) || val < 0) {
goto fail;
}
retval = val * mul;
fail:
if (end) {
*end = endptr;
}
return retval;
}
