hpgs/lib/hpgsostream.c

44   ret=_this->vtable->vprintf_func(_this->stream,msg,ap);
55   ret = _this->vtable->vprintf_func(_this->stream,msg,aq);
127   ret->stream = out;
147 static int mem_grow (hpgs_mem_ostream_stream *stream, size_t hint)
149   if (stream->errflg)
152   size_t pos = stream->pptr-stream->data;
153   size_t sz  = stream->eptr-stream->data;
159       stream->errflg = 1;
163   unsigned char *ndata=(unsigned char *)realloc(stream->data,sz2);
167       stream->data=ndata;
168       stream->pptr=stream->data+pos;
169       stream->eptr=stream->data+sz2;
174       stream->errflg = 1;
179 static int mem_putc (int c, hpgs_mem_ostream_stream *stream)
181   if (stream->pptr >= stream->eptr)
182     mem_grow(stream,0);
184   if (stream->errflg)
187   *stream->pptr = c;
188   ++stream->pptr;
193 static size_t mem_write (void *ptr, size_t size, size_t nmemb, hpgs_mem_ostream_stream *stream)
195   if (stream->pptr + size*nmemb > stream->eptr)
196     mem_grow(stream,size*nmemb);
198   if (stream->errflg)
201   memcpy(stream->pptr,ptr,size*nmemb);
202   stream->pptr += size*nmemb;
207 static int mem_vprintf (hpgs_mem_ostream_stream *stream, const char *fmt, va_list ap)
214       if (stream->errflg)
217       size = stream->eptr - stream->pptr;
222       n = _vsnprintf (stream->pptr, size, fmt, aq);
224       n = vsnprintf ((char*)stream->pptr, size, fmt, aq);
230           stream->pptr += n;
235       mem_grow(stream,0);
241 static int mem_close (hpgs_mem_ostream_stream *stream)
243   if (stream->data) free(stream->data);
244   free(stream);
248 static int mem_iserror (hpgs_mem_ostream_stream *stream)
250   return stream->errflg;
253 static hpgs_istream *mem_getbuf (hpgs_mem_ostream_stream *stream)
255   if (stream->errflg || !stream->data)
258   return hpgs_new_mem_istream (stream->data,stream->pptr-stream->data,HPGS_FALSE);
261 static int mem_tell (hpgs_mem_ostream_stream *stream, int layer, size_t *pos)
263   if (layer || stream->errflg) return -1;
265   *pos = stream->pptr-stream->data;
269 static int mem_seek (hpgs_mem_ostream_stream *stream, size_t pos)
271   if (stream->errflg) return -1;
273   if (stream->data + pos > stream->pptr)
275       stream->errflg = 1;
279   stream->pptr = stream->data + pos;
307   hpgs_mem_ostream_stream *stream;
313   stream =
316   if (!stream)
322   stream->data = (unsigned char *)malloc(data_reserve);
323   stream->pptr = stream->data;
324   stream->eptr =  stream->data ? stream->data+data_reserve : 0;
325   stream->errflg = stream->data ? 0 : 1;
327   ret->stream = stream;