intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 63 insertions, 0 deletions

diff --git a/library/cpp/regex/pcre/regexp.h b/library/cpp/regex/pcre/regexp.h
new file mode 100644
index 0000000000..bc610bd2f3
--- /dev/null
+++ b/library/cpp/regex/pcre/regexp.h
@@ -0,0 +1,63 @@
+#pragma once
+
+#include <sys/types.h>
+
+#include <util/system/defaults.h>
+#include <util/generic/string.h>
+#include <util/generic/yexception.h>
+
+#include <contrib/libs/pcre/pcre.h>
+#include <contrib/libs/pcre/pcreposix.h>
+
+//THIS CODE LOOKS LIKE A TRASH, BUT WORKS.
+
+#define NMATCHES 100
+#define REGEXP_GLOBAL 0x0080 // use this if you want to find all occurences
+
+class TRegExBaseImpl;
+
+class TRegExBase {
+protected:
+    TSimpleIntrusivePtr<TRegExBaseImpl> Impl;
+
+public:
+    TRegExBase(const char* regExpr = nullptr, int cflags = REG_EXTENDED);
+    TRegExBase(const TString& regExpr, int cflags = REG_EXTENDED);
+
+    virtual ~TRegExBase();
+
+    int Exec(const char* str, regmatch_t pmatch[], int eflags, int nmatches = NMATCHES) const;
+    void Compile(const TString& regExpr, int cflags = REG_EXTENDED);
+    bool IsCompiled() const;
+    int GetCompileOptions() const;
+    TString GetRegExpr() const;
+};
+
+class TRegExMatch: public TRegExBase {
+public:
+    TRegExMatch(const char* regExpr = nullptr, int cflags = REG_NOSUB | REG_EXTENDED);
+    TRegExMatch(const TString& regExpr, int cflags = REG_NOSUB | REG_EXTENDED);
+
+    bool Match(const char* str) const;
+};
+
+struct TBackReferences {
+    int Beg;
+    int End;
+    int Refer;
+};
+
+class TRegExSubst: public TRegExBase {
+private:
+    const char* Replacement;
+    regmatch_t PMatch[NMATCHES];
+
+    TBackReferences Brfs[NMATCHES];
+    int BrfsCount;
+
+public:
+    TRegExSubst(const char* regExpr = nullptr, int cflags = REG_EXTENDED);
+
+    TString Replace(const char* str, int eflags = 0);
+    int ParseReplacement(const char* replacement);
+};