diff options
Diffstat (limited to 'squirrel_3_0_1_stable/sqstdlib/sqstdblobimpl.h')
| -rw-r--r-- | squirrel_3_0_1_stable/sqstdlib/sqstdblobimpl.h | 216 |
1 files changed, 108 insertions, 108 deletions
diff --git a/squirrel_3_0_1_stable/sqstdlib/sqstdblobimpl.h b/squirrel_3_0_1_stable/sqstdlib/sqstdblobimpl.h index b2291b73c..9f22c0ae2 100644 --- a/squirrel_3_0_1_stable/sqstdlib/sqstdblobimpl.h +++ b/squirrel_3_0_1_stable/sqstdlib/sqstdblobimpl.h @@ -1,108 +1,108 @@ -/* see copyright notice in squirrel.h */
-#ifndef _SQSTD_BLOBIMPL_H_
-#define _SQSTD_BLOBIMPL_H_
-
-struct SQBlob : public SQStream
-{
- SQBlob(SQInteger size) {
- _size = size;
- _allocated = size;
- _buf = (unsigned char *)sq_malloc(size);
- memset(_buf, 0, _size);
- _ptr = 0;
- _owns = true;
- }
- virtual ~SQBlob() {
- sq_free(_buf, _allocated);
- }
- SQInteger Write(void *buffer, SQInteger size) {
- if(!CanAdvance(size)) {
- GrowBufOf(_ptr + size - _size);
- }
- memcpy(&_buf[_ptr], buffer, size);
- _ptr += size;
- return size;
- }
- SQInteger Read(void *buffer,SQInteger size) {
- SQInteger n = size;
- if(!CanAdvance(size)) {
- if((_size - _ptr) > 0)
- n = _size - _ptr;
- else return 0;
- }
- memcpy(buffer, &_buf[_ptr], n);
- _ptr += n;
- return n;
- }
- bool Resize(SQInteger n) {
- if(!_owns) return false;
- if(n != _allocated) {
- unsigned char *newbuf = (unsigned char *)sq_malloc(n);
- memset(newbuf,0,n);
- if(_size > n)
- memcpy(newbuf,_buf,n);
- else
- memcpy(newbuf,_buf,_size);
- sq_free(_buf,_allocated);
- _buf=newbuf;
- _allocated = n;
- if(_size > _allocated)
- _size = _allocated;
- if(_ptr > _allocated)
- _ptr = _allocated;
- }
- return true;
- }
- bool GrowBufOf(SQInteger n)
- {
- bool ret = true;
- if(_size + n > _allocated) {
- if(_size + n > _size * 2)
- ret = Resize(_size + n);
- else
- ret = Resize(_size * 2);
- }
- _size = _size + n;
- return ret;
- }
- bool CanAdvance(SQInteger n) {
- if(_ptr+n>_size)return false;
- return true;
- }
- SQInteger Seek(SQInteger offset, SQInteger origin) {
- switch(origin) {
- case SQ_SEEK_SET:
- if(offset > _size || offset < 0) return -1;
- _ptr = offset;
- break;
- case SQ_SEEK_CUR:
- if(_ptr + offset > _size || _ptr + offset < 0) return -1;
- _ptr += offset;
- break;
- case SQ_SEEK_END:
- if(_size + offset > _size || _size + offset < 0) return -1;
- _ptr = _size + offset;
- break;
- default: return -1;
- }
- return 0;
- }
- bool IsValid() {
- return _buf?true:false;
- }
- bool EOS() {
- return _ptr == _size;
- }
- SQInteger Flush() { return 0; }
- SQInteger Tell() { return _ptr; }
- SQInteger Len() { return _size; }
- SQUserPointer GetBuf(){ return _buf; }
-private:
- SQInteger _size;
- SQInteger _allocated;
- SQInteger _ptr;
- unsigned char *_buf;
- bool _owns;
-};
-
-#endif //_SQSTD_BLOBIMPL_H_
+/* see copyright notice in squirrel.h */ +#ifndef _SQSTD_BLOBIMPL_H_ +#define _SQSTD_BLOBIMPL_H_ + +struct SQBlob : public SQStream +{ + SQBlob(SQInteger size) { + _size = size; + _allocated = size; + _buf = (unsigned char *)sq_malloc(size); + memset(_buf, 0, _size); + _ptr = 0; + _owns = true; + } + virtual ~SQBlob() { + sq_free(_buf, _allocated); + } + SQInteger Write(void *buffer, SQInteger size) { + if(!CanAdvance(size)) { + GrowBufOf(_ptr + size - _size); + } + memcpy(&_buf[_ptr], buffer, size); + _ptr += size; + return size; + } + SQInteger Read(void *buffer,SQInteger size) { + SQInteger n = size; + if(!CanAdvance(size)) { + if((_size - _ptr) > 0) + n = _size - _ptr; + else return 0; + } + memcpy(buffer, &_buf[_ptr], n); + _ptr += n; + return n; + } + bool Resize(SQInteger n) { + if(!_owns) return false; + if(n != _allocated) { + unsigned char *newbuf = (unsigned char *)sq_malloc(n); + memset(newbuf,0,n); + if(_size > n) + memcpy(newbuf,_buf,n); + else + memcpy(newbuf,_buf,_size); + sq_free(_buf,_allocated); + _buf=newbuf; + _allocated = n; + if(_size > _allocated) + _size = _allocated; + if(_ptr > _allocated) + _ptr = _allocated; + } + return true; + } + bool GrowBufOf(SQInteger n) + { + bool ret = true; + if(_size + n > _allocated) { + if(_size + n > _size * 2) + ret = Resize(_size + n); + else + ret = Resize(_size * 2); + } + _size = _size + n; + return ret; + } + bool CanAdvance(SQInteger n) { + if(_ptr+n>_size)return false; + return true; + } + SQInteger Seek(SQInteger offset, SQInteger origin) { + switch(origin) { + case SQ_SEEK_SET: + if(offset > _size || offset < 0) return -1; + _ptr = offset; + break; + case SQ_SEEK_CUR: + if(_ptr + offset > _size || _ptr + offset < 0) return -1; + _ptr += offset; + break; + case SQ_SEEK_END: + if(_size + offset > _size || _size + offset < 0) return -1; + _ptr = _size + offset; + break; + default: return -1; + } + return 0; + } + bool IsValid() { + return _buf?true:false; + } + bool EOS() { + return _ptr == _size; + } + SQInteger Flush() { return 0; } + SQInteger Tell() { return _ptr; } + SQInteger Len() { return _size; } + SQUserPointer GetBuf(){ return _buf; } +private: + SQInteger _size; + SQInteger _allocated; + SQInteger _ptr; + unsigned char *_buf; + bool _owns; +}; + +#endif //_SQSTD_BLOBIMPL_H_ |