78 lines
2.7 KiB
C++
78 lines
2.7 KiB
C++
#ifndef SAUERLIB_STREAM_HH
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#define SAUERLIB_STREAM_HH
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#include "tools.hh"
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#include "endian.hh"
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/* workaround for some C platforms that have these two functions as macros - not used anywhere */
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#ifdef getchar
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#undef getchar
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#endif
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#ifdef putchar
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#undef putchar
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#endif
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struct stream
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{
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#ifdef WIN32
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#if defined(__GNUC__) && !defined(__MINGW32__)
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typedef off64_t offset;
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#else
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typedef __int64 offset;
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#endif
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#else
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typedef off_t offset;
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#endif
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virtual ~stream() {}
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virtual void close() = 0;
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virtual bool end() = 0;
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virtual offset tell() { return -1; }
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virtual offset rawtell() { return tell(); }
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virtual bool seek(offset pos, int whence = SEEK_SET) { return false; }
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virtual offset size();
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virtual offset rawsize() { return size(); }
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virtual size_t read(void *buf, size_t len) { return 0; }
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virtual size_t write(const void *buf, size_t len) { return 0; }
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virtual bool flush() { return true; }
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virtual int getchar() { uchar c; return read(&c, 1) == 1 ? c : -1; }
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virtual bool putchar(int n) { uchar c = n; return write(&c, 1) == 1; }
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virtual bool getline(char *str, size_t len);
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virtual bool putstring(const char *str) { size_t len = strlen(str); return write(str, len) == len; }
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virtual bool putline(const char *str) { return putstring(str) && putchar('\n'); }
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virtual size_t printf(const char *fmt, ...) PRINTFARGS(2, 3);
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virtual uint getcrc() { return 0; }
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template<class T> size_t put(const T *v, size_t n) { return write(v, n*sizeof(T))/sizeof(T); }
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template<class T> bool put(T n) { return write(&n, sizeof(n)) == sizeof(n); }
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template<class T> bool putlil(T n) { return put<T>(lilswap(n)); }
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template<class T> bool putbig(T n) { return put<T>(bigswap(n)); }
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template<class T> size_t get(T *v, size_t n) { return read(v, n*sizeof(T))/sizeof(T); }
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template<class T> T get() { T n; return read(&n, sizeof(n)) == sizeof(n) ? n : 0; }
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template<class T> T getlil() { return lilswap(get<T>()); }
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template<class T> T getbig() { return bigswap(get<T>()); }
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};
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template<class T>
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struct streambuf
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{
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stream *s;
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streambuf(stream *s) : s(s) {}
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T get() { return s->get<T>(); }
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size_t get(T *vals, size_t numvals) { return s->get(vals, numvals); }
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void put(const T &val) { s->put(&val, 1); }
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void put(const T *vals, size_t numvals) { s->put(vals, numvals); }
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size_t length() { return s->size(); }
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};
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stream *openrawfile(const char *filename, const char *mode);
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stream *openfile(const char *filename, const char *mode);
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stream *opentempfile(const char *filename, const char *mode);
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stream *openutf8file(const char *filename, const char *mode, stream *file = nullptr);
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char *loadfile(const char *fn, size_t *size, bool utf8 = true);
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#endif
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