Regular expression implementation.

Does not support [\w\D] type character ranges yet.
Has bugs in lookahead captures.

Makefile

@@ -26,6 +26,9 @@ jsdump.c : astnames.h opnames.h
 js: build/main.o build/libjs.a
 	$(CC) -o $@ $^ -lm
 
+re: regex.c utf.c utftype.c
+	$(CC) $(CFLAGS) -DTEST -o $@ $^
+
 libjs.c : $(SRCS)
 	ls $(SRCS) | awk '{print "#include \""$$1"\""}' > $@
 

jsregexp.c

@@ -14,7 +14,7 @@ void js_newregexp(js_State *J, const char *pattern, int flags)
 
 	obj = jsV_newobject(J, JS_CREGEXP, J->RegExp_prototype);
 
-	opts = REG_EXTENDED;
+	opts = 0;
 	if (flags & JS_REGEXP_I) opts |= REG_ICASE;
 	if (flags & JS_REGEXP_M) opts |= REG_NEWLINE;
 

regex.h

@@ -1,16 +1,31 @@
 #ifndef regex_h
 #define regex_h
 
-#include <regex.h>
+#define regcomp js_regcomp
+#define regexec js_regexec
+#define regfree js_regfree
 
 typedef struct Reprog Reprog;
-typedef struct {
+typedef struct Resub Resub;
+struct Resub {
 	const char *sp;
 	const char *ep;
-} Resub;
+};
 
-Reprog *js_regcomp(const char *pattern, int cflags, const char **errorp);
-int js_regexec(Reprog *prog, const char *string, int nmatch, Resub *pmatch, int eflags);
-void js_regfree(Reprog *prog);
+Reprog *regcomp(const char *pattern, int cflags, const char **errorp);
+int regexec(Reprog *prog, const char *string, int nmatch, Resub *pmatch, int eflags);
+void regfree(Reprog *prog);
+
+enum {
+	/* regcomp flags */
+	REG_ICASE = 1,
+	REG_NEWLINE = 2
+};
+
+enum {
+	/* regexec flags */
+	REG_NOTBOL = 1,
+	REG_NOTEOL = 2
+};
 
 #endif