Changeset 206 for cpp/frams/virtfile/virtfile.h

Timestamp:

04/03/14 01:24:30 (10 years ago)

Author:

Maciej Komosinski

Message:

VirtFILE base class provides Vprintf, Vgetc, Vputc, Vrewind, so that subclasses do not have to implement these functions

File:

• cpp/frams/virtfile/virtfile.h (modified) (1 diff)

cpp/frams/virtfile/virtfile.h

@@ -26 +26 @@
 virtual int Vwrite(const void *ptr, size_t size, size_t nmemb)=0;
 virtual int Veof()=0;
-virtual int Vputc(int c)=0;
+virtual int Vputc(int c) {unsigned char data=c; return (Vwrite(&data,1,1)==1)?data:EOF;}
 virtual int Vputs(const char *s)=0;
-virtual int Vgetc()=0;
+virtual int Vgetc() {unsigned char data; if (Vread(&data,1,1)==1) return data; else return EOF;}
 virtual int Vseek(long offset, int whence)=0;
 virtual int Vtell()=0;
-virtual void Vrewind()=0;
+virtual void Vrewind() {Vseek(0,SEEK_SET);}
 virtual int Vflush()=0;
 virtual char *Vgets(char *s, int size)=0;
-virtual int Vprintf(const char *format, va_list args)=0;
+virtual int Vprintf(const char *format, va_list args);
 int printf(const char *format, ...);
 virtual const char *VgetPath() {return 0;} // 0=unspecified path