Adding menuetlibc back to its place in /programs/develop/libraries

This version of menuetlibc was taken from revision 4743, right before I made any changes

git-svn-id: svn://kolibrios.org@4973 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/libraries/menuetlibc/include/iostream

@@ -0,0 +1,121 @@
+#ifndef _IOSTREAM_INCLUDED
+#define _IOSTREAM_INCLUDED
+#include <cstdio>
+#include <string>
+namespace std
+{
+  class istream
+  {
+  public:
+    istream() {}
+    virtual ~istream() {}
+    virtual istream& operator>>(string& s)=0;
+    virtual operator bool() const=0;
+    virtual int getc()=0;
+    virtual unsigned tellg()=0;
+    virtual istream& seekg(unsigned off,ios::seek_dir dir)=0;
+    virtual istream& getline(char* s, unsigned n, char delim)=0;
+  };
+  class ifstream : public istream
+  {
+    FILE* f;
+  public:
+    void open(const char* s, /*ios::open_mode*/int mode=ios::in)
+    {f=fopen(s,(mode&ios::binary)?"rb":"r");}
+    ifstream():f(NULL){}
+    ifstream(const char* s, /*ios::open_mode*/int mode=ios::in)
+    {open(s,mode);}
+    ~ifstream() {if (f) fclose(f);}
+    bool fail() const {return f==NULL?true:ferror(f)||feof(f);}
+    operator bool() const {return !fail();}
+    bool eof() const {return f==NULL?false:feof(f);}
+    virtual istream& seekg(unsigned off,ios::seek_dir dir)
+    {fseek(f,off,dir);return *this;}
+    ifstream& read(char* s, unsigned n)
+    {if (fread(s,1,n,f)!=n) f->_flag|=0200;return *this;}
+    virtual unsigned tellg() {return ftell(f);}
+    ifstream& getline(char* s, unsigned n)
+    {fgets(s,n,f);unsigned m=strlen(s);
+     if(m&&s[m-1]=='\n')s[m-1]=0;else f->_flag|=0200;return *this;}
+    istream& operator>>(string& s)
+    {char res[512];fscanf(f,"%s",res);s=res;return *this;}
+    virtual istream& getline(char* s, unsigned n, char delim)
+    {
+      int c;
+      unsigned pos=0;
+      for (;pos<n-1;)
+      {
+        c=fgetc(f);
+        if (c==EOF) break;
+        if (c==delim) break;
+        s[pos++]=c;
+      }
+      s[pos]=0;
+      return *this;
+    }
+    int getc(void)
+    { return fgetc(f); }
+  };
+  inline istream& getline(istream& is, string& str, char delim='\n')
+  {
+    str.erase();
+    while (is)
+    {
+      int c = is.getc();
+      if (c == EOF || c == delim)
+        break;
+      str += c;
+    }
+    return is;
+  }
+  class istringstream : public istream
+  {
+    string s;
+    unsigned pos;
+  public:
+    istringstream(const char* str):s(str),pos(0) {}
+    istringstream(const string& str):s(str.c_str()),pos(0) {}
+    istringstream& operator>>(int& n)
+    {int x;sscanf(s.c_str()+pos,"%d%n",&n,&x);pos+=x;return *this;}
+    istream& operator>>(string& s)
+    {int x;char res[512];sscanf(s.c_str()+pos,"%s%n",res,&x);pos+=x;
+    s=res;return *this;}
+    virtual operator bool() const {return s.c_str()[pos]!=0;}
+    virtual int getc()
+    {
+      char c=s.c_str()[pos];
+      if (c==0)
+        return EOF;
+      pos++;
+      return c;
+    }
+    virtual unsigned tellg() {return pos;}
+    virtual istream& seekg(unsigned off,ios::seek_dir dir)
+    {
+      unsigned sz=s.size();
+      switch (dir)
+      {
+        case ios::beg: pos=off;break;
+        case ios::cur: pos+=off;break;
+        case ios::end: pos=sz-off;break;
+      }
+      if (pos>sz) pos=sz;
+      return *this;
+    }
+    virtual istream& getline(char* str, unsigned n, char delim)
+    {
+      int c;
+      unsigned p=0;
+      for (;p<n-1;)
+      {
+        c=s[pos++];
+        if (c==0) {pos--;break;}
+        if (c==delim) break;
+        str[p++]=c;
+      }
+      str[p]=0;
+      return *this;
+    }
+  };
+}
+#endif