added trim operand function.

File.cpp

@@ -34,7 +34,7 @@ namespace coreutils {
 
    File::~File() {
       close(fd);
-      setBufferSize(0);
+      free(buffer);
    }
 
    void File::setBufferSize(size_t size) {

File.h

@@ -17,7 +17,7 @@ namespace coreutils {
 
     public:
       File(ZString fileName, int mode = O_RDONLY, int authority = 0664);
-      ~File();
+      virtual ~File();
       void setBufferSize(size_t size);
       int read();
       int readLine();

JSONFile.h

@@ -19,12 +19,12 @@ namespace coreutils {
       JSONFile(ZString path): JString(), File(path, O_RDWR, 0644) {
 
       }
-
+      
       virtual ~JSONFile() {
          write(*this);
       }
 
-
+      void changed(ZString key, ZString value) overide;
 
    };
 

JString.cpp

@@ -169,5 +169,54 @@ namespace coreutils {
       }
       reset();
    }
-      
+
+   MString JString::pretty() {
+      MString output;
+      reset();
+      char ch;
+      int index = 0;
+      while(!eod()) {
+	 ch = nextChar();
+	 if(ch == '{') {
+	    index += 3;
+	    output << ch << '\n';
+	    for(int ix = 0; ix < index; ++ix)
+	      output << ' ';
+	 }
+	 else if(ch == '[') {
+	    index += 3;
+	    output << ch << '\n';
+	    for(int ix = 0; ix < index; ++ix)
+	      output << ' ';
+	 }
+	 else if(ch == ':') {
+	    output << ": ";
+	 }	 
+	 else if(ch == '}') {
+	    index -= 3;
+	    output << '\n';
+	    for(int ix = 0; ix < index; ++ix)
+	      output << ' ';
+	    output << ch;
+	 }	 
+	 else if(ch == ']') {
+	    index -= 3;
+	    output << '\n';
+	    for(int ix = 0; ix < index; ++ix)
+	      output << ' ';
+	    output << ch;
+	 }	 
+	 else if(ch == ',') {
+	    output << ch << '\n';
+	    for(int ix = 0; ix < index; ++ix)
+	      output << ' ';
+	 }
+	 else 
+	   output << ch;
+      }
+      return output;      
+   }
+
+   void JString::changed(ZString key, ZString value) {}
+   
 }

JString.h

@@ -67,8 +67,9 @@ namespace coreutils {
 	    return jstring.find(key).str();
 	 }
 
-	 Proxy& operator=(coreutils::ZString value) {
+	 Proxy& operator=(coreutils::MString value) {	    
 	    jstring.set(key, value);
+	    jstring.changed(key, value);
 	    return *this;
 	 }
 
@@ -82,6 +83,10 @@ namespace coreutils {
       }
       
       JString & operator=(coreutils:: ZString value);
+
+      MString pretty();
+
+      virtual void changed(ZString key, ZString value);
       
     private:
       void removeWhitespace();

MString.cpp

@@ -1,6 +1,7 @@
 #include "MString.h"
 #include "Log.h"
 #include "uuid/uuid.h"
+#include "Exception.h"
 #include <cstring>
 #include <string>
 #include <format>
@@ -186,13 +187,11 @@ namespace coreutils {
       return *this;
    }
    
-//   MString &MString::operator<<(std::string value) {
-//      int temp = length;
-//      int len = length + value.length();
-//      setSize(len);
-//      memcpy(data + temp, value.c_str(), value.length());
-//      return *this;
-//   }
+   MString &MString::operator<<(char value) {
+      setSize(length + 1);
+      data[length - 1] = value;
+      return *this;
+   }
 
 //   MString &MString::operator<<(std::ostream (*f)(std::ostream&)) {
    MString &MString::operator<<(std::basic_ostream<char> (*pf)(std::basic_ostream<char>&)) {
@@ -281,5 +280,130 @@ namespace coreutils {
    int MString::offset() {
       return cursor - data;
    }
+
+   MString MString::toBinary() {
+      push();
+      reset();
+      MString target;
+      char temp;
+      while(!eod()) {
+	 temp = nextChar();
+	 if(strchr("\\'\".\0\r\n", temp))
+	   target.write('\\');
+	 target.write(temp);
+      }
+      pop();
+      return target;
+   }
    
+   MString MString::fromBinary() {
+      push();
+      reset();
+      MString target;
+      while(!eod()) {
+	 if(ifNext("\\r"))
+	   target.write(13);
+	 else if(ifNext("\\n"))
+	   target.write(10);
+	 else if(ifNext("\\0"))
+	   target.write(0);
+	 else if(ifNext("\\\\"))
+	   target.write("\\");
+	 else if(ifNext("\\."))
+	   target.write(".");
+	 else if(ifNext("\\\""))
+	   target.write("\"");
+	 else if(ifNext("\\\'"))
+	   target.write("'");
+	 else
+	   target.write(nextChar());
+      }
+      pop();
+      return target;
+   }
+   
+   MString MString::toHex() {
+      push();
+      reset();
+      MString target;
+      char temp;
+      while(!eod()) {	   
+	   temp = nextChar();
+	   char temp2 = temp;
+	   temp >>= 4;
+	   target.write(hexChar(temp));
+	   target.write(hexChar(temp2));
+	}      
+      pop();
+      return target;
+   }
+   
+   MString MString::fromHex() {
+      push();
+      reset();
+      MString target;
+      while(!eod()) {
+	 char ch1 = nextChar();
+	 ch1 -= 48;
+	 if(ch1 > 9)
+	   ch1 -= 7;
+	 ch1 <<= 4;
+	 ch1 &= 240;
+	 if(eod())
+	   coreutils::Exception("conversion from hex requires even number of characters.");
+	 char ch2 = nextChar();
+	 ch2 -= 48;
+	 if(ch2 > 9)
+	   ch2 -= 7;
+	 ch2 &= 15;
+	 ch1 |= ch2;
+	 target.write(ch1);
+      }
+      pop();
+      return target;
+   }
+      
+   MString MString::toBase64() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::fromBase64() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::toUpper() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::toLower() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::toCGI() {
+      MString target;
+      return target;
+   }
+   
+   
+   MString MString::fromCGI() {
+      MString target;
+      return target;
+   }
+
+   char MString::hexChar(char c) {
+      c &= 15;
+      c += 48;
+      if(c > 57)
+	c += 7;
+      return c;
+   }
+      
 }

MString.h

@@ -157,7 +157,7 @@ namespace coreutils {
       ///
       ///
       
-//      MString &operator<<(std::string value);
+      MString &operator<<(char value);
 
       ///
       ///
@@ -231,14 +231,81 @@ namespace coreutils {
       ///
 
       MString &read(int fd);
+
+      ///
+      ///
+      ///
       
       int offset();
 
+      ///
+      ///
+      ///
+      
+      MString toBinary();
+
+      ///
+      ///
+      ///
+
+      MString fromBinary();
+
+      ///
+      ///
+      ///
+
+      MString toHex();
+
+      ///
+      ///
+      ///
+
+      MString fromHex();
+
+      ///
+      ///
+      ///
+
+      MString toBase64();
+
+      ///
+      ///
+      ///
+
+      MString fromBase64();
+
+      ///
+      ///
+      ///
+
+      MString toUpper();
+
+      ///
+      ///
+      ///
+
+
+      MString toLower();
+
+      ///
+      ///
+      ///
+
+      MString toCGI();
+
+      ///
+      ///
+      ///
+
+      MString fromCGI();
+
     protected:
       void setSize(int size);
       
     private:
       int bufferSize = 0;
+      char hexChar(char c);
+      
    };
    
 }

ZString.cpp

@@ -66,8 +66,8 @@ namespace coreutils {
    }
 
    ZString::~ZString() {
-      if(cdata != NULL)
-        free(cdata);
+      if(cdata != NULL) 
+	free(cdata);      
    }
 
    bool ZString::operator<(const ZString &valuex) const {
@@ -110,9 +110,9 @@ namespace coreutils {
       return (strncmp(data, valuex.data, length) == 0);
    }
 
-   bool ZString::operator!=(const ZString &valuex) const {
-//      if(length != valuex.getLength())
-//	return false;
+   bool ZString::operator!=(const ZString valuex) const {
+      if(length != valuex.getLength())
+	return true;
       return (strncmp(data, valuex.data, length) != 0);
    }
 
@@ -137,7 +137,7 @@ namespace coreutils {
 	   ++cursor;
       if(cursor == end)
 	return 0;
-      while((*cursor >- '0') && (*cursor <= '9')) {
+      while((*cursor >= '0') && (*cursor <= '9')) {
 	 value *= 10;
 	 value += *cursor - 48;
 	 ++cursor;
@@ -232,7 +232,10 @@ namespace coreutils {
    }
 
    char* ZString::c_str() {
-      cdata = (char *)malloc(length + 1);
+      if(cdata == NULL)
+	cdata = (char *)malloc(length + 1);
+      else
+	cdata = (char *)realloc(cdata, length + 1);
       strncpy(cdata, data, length);
       cdata[length] = '\0';
       return cdata;
@@ -252,9 +255,8 @@ namespace coreutils {
       char *startChar = data + start;
       char *endChar = startChar + len;
       char newlen = endChar > end ? endChar - end: len;
-      if(startChar < end) {
-	 return ZString(startChar, newlen);
-      }
+      if(startChar < end) 
+	return ZString(startChar, newlen);
       return ZString();
    }   
    
@@ -360,6 +362,12 @@ namespace coreutils {
       return cursor >= data + length;
    }
 
+   int ZString::goeod() {
+      char *temp = cursor;
+      cursor = data + length;
+      return cursor - temp;
+   }
+   
    bool ZString::startsWith(const char *value) {
       return strncmp(cursor, value, strlen(value)) == 0;
    }
@@ -444,11 +452,28 @@ namespace coreutils {
    }
    
    int ZString::skipWhitespace() {
-      int len = strspn(cursor, " \n\t");
-      cursor += len;
+      char *end = data + length;
+      int len = 0;
+      while((cursor < end) && ((*cursor == ' ') || (*cursor == '\n') || (*cursor == '\t'))) {
+	 ++cursor;
+	 ++len;
+      }      
       return len;
    }
 
+   int ZString::trimTrailingWhitespace() {
+      goeod();
+      int len = 0;
+      --cursor;
+      while((cursor > data) && ((*cursor == ' ') || (*cursor == '\n') || (*cursor == '\t'))) {
+	 --cursor;
+	 --length;
+	 ++len;
+      }      
+      ++cursor;
+      return len;
+   }
+   
    bool ZString::lineIsWhitespace() {
       char *end = data + length;
       char *temp = cursor;
@@ -490,6 +515,8 @@ namespace coreutils {
    }
 
    ZString ZString::trim() {
+      trimTrailingWhitespace();
+      reset();
       skipWhitespace();
       return unparsed();
    }

ZString.h

@@ -84,7 +84,7 @@ namespace coreutils {
       /// Destructor for the ZString.
       ///
       
-      ~ZString();
+      virtual ~ZString();
       
       ///
       /// A friend method used to write the value of the ZString
@@ -115,7 +115,7 @@ namespace coreutils {
       bool operator<=(const ZString &valuex) const;
       bool operator>=(const ZString &valuex) const;
       bool operator==(const ZString valuex);
-      bool operator!=(const ZString &valuex) const;
+      bool operator!=(const ZString valuex) const;
       bool operator!=(const char *valuex) const;
       
       ///
@@ -248,6 +248,14 @@ namespace coreutils {
       ///
       
       bool eod();
+
+      ///
+      /// Go to the end of data.
+      ///
+      /// Return number of bytes the cursor was moved. 
+      ///
+
+      int goeod();
       
       ///
       ///
@@ -312,7 +320,7 @@ namespace coreutils {
       
       ///
       /// Advance the cursor through the ZString for each whitespace character
-      /// encountered.
+      /// encountered. 
       ///
       
       int skipWhitespace();
@@ -321,6 +329,12 @@ namespace coreutils {
       ///
       ///
 
+      int trimTrailingWhitespace();
+      
+      ///
+      ///
+      ///
+
       bool lineIsWhitespace();
       
       ///
@@ -454,9 +468,9 @@ namespace coreutils {
       void moveBackToLineStart();
             
     protected:
-      char *data;
-      char *cursor;
-      size_t length;
+      char *data = NULL;
+      char *cursor = NULL;
+      size_t length = 0;
       char *cdata = NULL;
       std::vector<ZString> list;
       

testing/compile

@@ -1,4 +1,4 @@
 #!/bin/bash
-#g++ -g -std=c++20 -o zstring_test zstring_test.cpp -I.. -L.. -lCoreUtils
+g++ -g -std=c++20 -o zstring_test zstring_test.cpp -I.. -L.. -lCoreUtils
 g++ -g -std=c++20 -o mstring_test mstring_test.cpp -I.. -L.. -lCoreUtils
 g++ -o jstring_test jstring_test.cpp -I.. -L.. -lCoreUtils

testing/jstring_test.cpp

@@ -27,6 +27,7 @@ int main(int argc, char **argv) {
    test1["object1"] = "{\"attr1\":\"value1\",\"attr2\":\"value2\",\"attr3\":\"value3\"}";
    test1["object1.attr2"] = "{\"xattr1\":\"xvalue1\",\"xattr2\":\"xvalue2\",\"xattr3\":\"xvalue3\"}";
    test1["object1.attr3"] = "Im not an object";
+//   test1["age"] = 64; future
 
    std::cout << test1 << std::endl;
 
@@ -58,6 +59,8 @@ int main(int argc, char **argv) {
    test9 = test1["object1"];
    std::cout << test9 << std::endl;
    std::cout << test9["attr3"] << std::endl;
+
+   std::cout << test1.pretty() << std::endl;
    
    return 0;
 }

testing/mstring_test.cpp

@@ -94,6 +94,9 @@ int main(int argc, char **argv) {
    int test29 = 402;
    test28 = test29;
    std::cout << "int: " << test28 << std::endl;
+
+   coreutils::MString test30 = "ABCDEF";
+   std::cout << test30 << " to hex " << test30.toHex() << " from hex " << test30.toHex().fromHex() << std::endl;
    
    return 0;
 }

testing/zstring_test.cpp

@@ -122,5 +122,8 @@ int main(int argc, char **argv) {
    std::cout << "integer '53524534' is [" << test24 << "]" << std::endl;
    coreutils::ZString test25("-543");
    std::cout << "integer '-543' is [" << test25 << "]" << std::endl;
+
+   coreutils::ZString test26("     this is a trim test     ");
+   std::cout << "trimmed [" << test26.trim() << "]" << std::endl;
    
 }