implement POSIX regexp support

[project/jsonpath.git] / matcher.c

diff --git a/matcher.c b/matcher.c
index 85bd1c5..d2a8767 100644 (file)
--- a/matcher.c
+++ b/matcher.c
@@ -17,6 +17,7 @@
 #include "parser.h"
 #include "matcher.h"
 
+
 static struct json_object *
 jp_match_next(struct jp_opcode *ptr,
               struct json_object *root, struct json_object *cur,
@@ -131,6 +132,99 @@ jp_cmp(struct jp_opcode *op, struct json_object *root, struct json_object *cur)
 }
 
 static bool
+jp_regmatch(struct jp_opcode *op, struct json_object *root, struct json_object *cur)
+{
+       struct jp_opcode left, right;
+       char lbuf[22], rbuf[22], *lval, *rval;
+       int err, rflags = REG_NOSUB | REG_NEWLINE;
+       regex_t preg;
+
+
+       if (!jp_resolve(root, cur, op->down, &left) ||
+           !jp_resolve(root, cur, op->down->sibling, &right))
+               return false;
+
+       if (left.type == T_REGEXP)
+       {
+               switch (right.type)
+               {
+               case T_BOOL:
+                       lval = right.num ? "true" : "false";
+                       break;
+
+               case T_NUMBER:
+                       snprintf(lbuf, sizeof(lbuf), "%d", right.num);
+                       lval = lbuf;
+                       break;
+
+               case T_STRING:
+                       lval = right.str;
+                       break;
+
+               default:
+                       return false;
+               }
+
+               rval = left.str;
+               rflags = left.num;
+       }
+       else
+       {
+               switch (left.type)
+               {
+               case T_BOOL:
+                       lval = left.num ? "true" : "false";
+                       break;
+
+               case T_NUMBER:
+                       snprintf(lbuf, sizeof(lbuf), "%d", left.num);
+                       lval = lbuf;
+                       break;
+
+               case T_STRING:
+                       lval = left.str;
+                       break;
+
+               default:
+                       return false;
+               }
+
+               switch (right.type)
+               {
+               case T_BOOL:
+                       rval = right.num ? "true" : "false";
+                       break;
+
+               case T_NUMBER:
+                       snprintf(rbuf, sizeof(rbuf), "%d", right.num);
+                       rval = rbuf;
+                       break;
+
+               case T_STRING:
+                       rval = right.str;
+                       break;
+
+               case T_REGEXP:
+                       rval = right.str;
+                       rflags = right.num;
+                       break;
+
+               default:
+                       return false;
+               }
+       }
+
+       if (regcomp(&preg, rval, rflags))
+               return false;
+
+       err = regexec(&preg, lval, 0, NULL, 0);
+
+       regfree(&preg);
+
+       return err ? false : true;
+}
+
+static bool
 jp_expr(struct jp_opcode *op, struct json_object *root, struct json_object *cur,
         int idx, const char *key, jp_match_cb_t cb, void *priv)
 {
@@ -149,6 +243,9 @@ jp_expr(struct jp_opcode *op, struct json_object *root, struct json_object *cur,
        case T_GE:
                return jp_cmp(op, root, cur);
 
+       case T_MATCH:
+               return jp_regmatch(op, root, cur);
+
        case T_ROOT:
                return !!jp_match(op, root, NULL, NULL);