diff options
| -rw-r--r-- | .gitignore | 1 | ||||
| -rw-r--r-- | src/sds.c | 59 |
2 files changed, 54 insertions, 6 deletions
diff --git a/.gitignore b/.gitignore index 9fad5da7d..06ebf60d6 100644 --- a/.gitignore +++ b/.gitignore @@ -1,3 +1,4 @@ +.*.swp *.o *.rdb *.log @@ -26,6 +26,12 @@ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. + * + * History: + * + * - 22 March 2011: History section created on top of sds.c + * - 22 March 2011: Fixed a problem with "\xab" escapes convertion in + * function sdssplitargs(). */ #define SDS_ABORT_ON_OOM @@ -399,11 +405,11 @@ sds sdscatrepr(sds s, char *p, size_t len) { case '"': s = sdscatprintf(s,"\\%c",*p); break; - case '\n': s = sdscatlen(s,"\\n",1); break; - case '\r': s = sdscatlen(s,"\\r",1); break; - case '\t': s = sdscatlen(s,"\\t",1); break; - case '\a': s = sdscatlen(s,"\\a",1); break; - case '\b': s = sdscatlen(s,"\\b",1); break; + case '\n': s = sdscatlen(s,"\\n",2); break; + case '\r': s = sdscatlen(s,"\\r",2); break; + case '\t': s = sdscatlen(s,"\\t",2); break; + case '\a': s = sdscatlen(s,"\\a",2); break; + case '\b': s = sdscatlen(s,"\\b",2); break; default: if (isprint(*p)) s = sdscatprintf(s,"%c",*p); @@ -416,6 +422,37 @@ sds sdscatrepr(sds s, char *p, size_t len) { return sdscatlen(s,"\"",1); } +/* Helper function for sdssplitargs() that returns non zero if 'c' + * is a valid hex digit. */ +int is_hex_digit(char c) { + return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || + (c >= 'A' && c <= 'F'); +} + +/* Helper function for sdssplitargs() that converts an hex digit into an + * integer from 0 to 15 */ +int hex_digit_to_int(char c) { + switch(c) { + case '0': return 0; + case '1': return 1; + case '2': return 2; + case '3': return 3; + case '4': return 4; + case '5': return 5; + case '6': return 6; + case '7': return 7; + case '8': return 8; + case '9': return 9; + case 'a': case 'A': return 10; + case 'b': case 'B': return 11; + case 'c': case 'C': return 12; + case 'd': case 'D': return 13; + case 'e': case 'E': return 14; + case 'f': case 'F': return 15; + default: return 0; + } +} + /* Split a line into arguments, where every argument can be in the * following programming-language REPL-alike form: * @@ -445,7 +482,17 @@ sds *sdssplitargs(char *line, int *argc) { if (current == NULL) current = sdsempty(); while(!done) { if (inq) { - if (*p == '\\' && *(p+1)) { + if (*p == '\\' && *(p+1) == 'x' && + is_hex_digit(*(p+2)) && + is_hex_digit(*(p+3))) + { + unsigned char byte; + + byte = (hex_digit_to_int(*(p+2))*16)+ + hex_digit_to_int(*(p+3)); + current = sdscatlen(current,(char*)&byte,1); + p += 3; + } else if (*p == '\\' && *(p+1)) { char c; p++; |