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https://github.com/fluencelabs/redis
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Fixed sdssplitargs() handling of hex-style escapes.
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parent
612810af6e
commit
e360e3bb7e
49
src/sds.c
49
src/sds.c
@ -26,6 +26,12 @@
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* History:
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*
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* - 22 March 2011: History section created on top of sds.c
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* - 22 March 2011: Fixed a problem with "\xab" escapes convertion in
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* function sdssplitargs().
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*/
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#define SDS_ABORT_ON_OOM
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@ -416,6 +422,37 @@ sds sdscatrepr(sds s, char *p, size_t len) {
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return sdscatlen(s,"\"",1);
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}
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/* Helper function for sdssplitargs() that returns non zero if 'c'
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* is a valid hex digit. */
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int is_hex_digit(char c) {
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return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') ||
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(c >= 'A' && c <= 'F');
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}
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/* Helper function for sdssplitargs() that converts an hex digit into an
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* integer from 0 to 15 */
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int hex_digit_to_int(char c) {
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switch(c) {
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case '0': return 0;
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case '1': return 1;
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case '2': return 2;
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case '3': return 3;
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case '4': return 4;
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case '5': return 5;
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case '6': return 6;
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case '7': return 7;
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case '8': return 8;
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case '9': return 9;
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case 'a': case 'A': return 10;
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case 'b': case 'B': return 11;
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case 'c': case 'C': return 12;
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case 'd': case 'D': return 13;
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case 'e': case 'E': return 14;
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case 'f': case 'F': return 15;
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default: return 0;
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}
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}
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/* Split a line into arguments, where every argument can be in the
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* following programming-language REPL-alike form:
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*
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@ -445,7 +482,17 @@ sds *sdssplitargs(char *line, int *argc) {
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if (current == NULL) current = sdsempty();
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while(!done) {
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if (inq) {
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if (*p == '\\' && *(p+1)) {
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if (*p == '\\' && *(p+1) == 'x' &&
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is_hex_digit(*(p+2)) &&
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is_hex_digit(*(p+3)))
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{
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unsigned char byte;
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byte = (hex_digit_to_int(*(p+2))*16)+
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hex_digit_to_int(*(p+3));
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current = sdscatlen(current,(char*)&byte,1);
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p += 3;
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} else if (*p == '\\' && *(p+1)) {
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char c;
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p++;
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