char* android::log_strntok_r(char* s, ssize_t& len, char*& last,
ssize_t& sublen) {
sublen = 0;
if (len <= 0) return nullptr;
if (!s) {
if (!(s = last)) return nullptr;
// fixup for log signature split <,
// LESS_THAN_SIG + <digit>
if ((*s & SIGNATURE_MASK) == LESS_THAN_SIG) {
*s = (*s & ~SIGNATURE_MASK) + '0';
*--s = '<';
++len;
}
// fixup for log signature split [,
// OPEN_BRACKET_SPACE is space, OPEN_BRACKET_SIG + <digit>
if ((*s & SIGNATURE_MASK) == OPEN_BRACKET_SIG) {
*s = (*s == OPEN_BRACKET_SPACE) ? ' ' : (*s & ~SIGNATURE_MASK) + '0';
*--s = '[';
++len;
}
}
while ((len > 0) && ((*s == '\r') || (*s == '\n'))) {
++s;
--len;
}
if (len <= 0) return last = nullptr;
char *peek, *tok = s;
for (;;) {
if (len <= 0) {
last = nullptr;
return tok;
}
char c = *s++;
--len;
ssize_t adjust;
switch (c) {
case '\r':
case '\n':
s[-1] = '\0';
last = s;
return tok;
case '<':
peek = is_prio(s, len);
if (!peek) break;
if (s != (tok + 1)) { // not first?
s[-1] = '\0';
*s &= ~SIGNATURE_MASK;
*s |= LESS_THAN_SIG; // signature for '<'
last = s;
return tok;
}
adjust = peek - s;
if (adjust > len) {
adjust = len;
}
sublen += adjust;
len -= adjust;
s = peek;
if ((*s == '[') && ((peek = is_timestamp(s + 1, len - 1)))) {
adjust = peek - s;
if (adjust > len) {
adjust = len;
}
sublen += adjust;
len -= adjust;
s = peek;
}
break;
case '[':
peek = is_timestamp(s, len);
if (!peek) break;
if (s != (tok + 1)) { // not first?
s[-1] = '\0';
if (*s == ' ') {
*s = OPEN_BRACKET_SPACE;
} else {
*s &= ~SIGNATURE_MASK;
*s |= OPEN_BRACKET_SIG; // signature for '['
}
last = s;
return tok;
}
adjust = peek - s;
if (adjust > len) {
adjust = len;
}
sublen += adjust;
len -= adjust;
s = peek;
break;
}
++sublen;
}
// NOTREACHED
}
char *log_strntok_r(char *s, size_t *len, char **last, size_t *sublen) {
*sublen = 0;
if (!*len) {
return NULL;
}
if (!s) {
if (!(s = *last)) {
return NULL;
}
// fixup for log signature split <,
// LESS_THAN_SIG + <digit>
if ((*s & SIGNATURE_MASK) == LESS_THAN_SIG) {
*s = (*s & ~SIGNATURE_MASK) + '0';
*--s = '<';
++*len;
}
// fixup for log signature split [,
// OPEN_BRACKET_SPACE is space, OPEN_BRACKET_SIG + <digit>
if ((*s & SIGNATURE_MASK) == OPEN_BRACKET_SIG) {
if (*s == OPEN_BRACKET_SPACE) {
*s = ' ';
} else {
*s = (*s & ~SIGNATURE_MASK) + '0';
}
*--s = '[';
++*len;
}
}
while (*len && ((*s == '\r') || (*s == '\n'))) {
++s;
--*len;
}
if (!*len) {
*last = NULL;
return NULL;
}
char *peek, *tok = s;
for (;;) {
if (*len == 0) {
*last = NULL;
return tok;
}
char c = *s++;
--*len;
size_t adjust;
switch (c) {
case '\r':
case '\n':
s[-1] = '\0';
*last = s;
return tok;
case '<':
peek = is_prio(s, *len);
if (!peek) {
break;
}
if (s != (tok + 1)) { // not first?
s[-1] = '\0';
*s &= ~SIGNATURE_MASK;
*s |= LESS_THAN_SIG; // signature for '<'
*last = s;
return tok;
}
adjust = peek - s;
if (adjust > *len) {
adjust = *len;
}
*sublen += adjust;
*len -= adjust;
s = peek;
if ((*s == '[') && ((peek = is_timestamp(s + 1, *len - 1)))) {
adjust = peek - s;
if (adjust > *len) {
adjust = *len;
}
*sublen += adjust;
*len -= adjust;
s = peek;
}
break;
case '[':
peek = is_timestamp(s, *len);
if (!peek) {
break;
}
if (s != (tok + 1)) { // not first?
s[-1] = '\0';
if (*s == ' ') {
*s = OPEN_BRACKET_SPACE;
} else {
*s &= ~SIGNATURE_MASK;
*s |= OPEN_BRACKET_SIG; // signature for '['
}
*last = s;
return tok;
}
adjust = peek - s;
if (adjust > *len) {
adjust = *len;
}
*sublen += adjust;
*len -= adjust;
s = peek;
break;
}
++*sublen;
}
// NOTREACHED
}
char *log_strtok_r(char *s, char **last) {
if (!s) {
if (!(s = *last)) {
return NULL;
}
// fixup for log signature split <,
// LESS_THAN_SIG + <digit>
if ((*s & SIGNATURE_MASK) == LESS_THAN_SIG) {
*s = (*s & ~SIGNATURE_MASK) + '0';
*--s = '<';
}
// fixup for log signature split [,
// OPEN_BRACKET_SPACE is space, OPEN_BRACKET_SIG + <digit>
if ((*s & SIGNATURE_MASK) == OPEN_BRACKET_SIG) {
if (*s == OPEN_BRACKET_SPACE) {
*s = ' ';
} else {
*s = (*s & ~SIGNATURE_MASK) + '0';
}
*--s = '[';
}
}
s += strspn(s, "\r\n");
if (!*s) { // no non-delimiter characters
*last = NULL;
return NULL;
}
char *peek, *tok = s;
for (;;) {
char c = *s++;
switch (c) {
case '\0':
*last = NULL;
return tok;
case '\r':
case '\n':
s[-1] = '\0';
*last = s;
return tok;
case '<':
peek = is_prio(s);
if (!peek) {
break;
}
if (s != (tok + 1)) { // not first?
s[-1] = '\0';
*s &= ~SIGNATURE_MASK;
*s |= LESS_THAN_SIG; // signature for '<'
*last = s;
return tok;
}
s = peek;
if ((*s == '[') && ((peek = is_timestamp(s + 1)))) {
s = peek;
}
break;
case '[':
peek = is_timestamp(s);
if (!peek) {
break;
}
if (s != (tok + 1)) { // not first?
s[-1] = '\0';
if (*s == ' ') {
*s = OPEN_BRACKET_SPACE;
} else {
*s &= ~SIGNATURE_MASK;
*s |= OPEN_BRACKET_SIG; // signature for '['
}
*last = s;
return tok;
}
s = peek;
break;
}
}
// NOTREACHED
}
