#include <OSD_Timer.hxx>
#include <Precision.hxx>
#include <Standard_CLocaleSentry.hxx>
+#include <Standard_ReadLineBuffer.hxx>
#include <algorithm>
#include <limits>
static const size_t THE_STL_SIZEOF_FACET = 50;
static const size_t THE_STL_MIN_FILE_SIZE = THE_STL_HEADER_SIZE + THE_STL_SIZEOF_FACET;
+ // The length of buffer to read (in bytes)
+ static const size_t THE_BUFFER_SIZE = 1024;
+
+ // Buffer to read
+ Standard_ReadLineBuffer THE_BUFFER (THE_BUFFER_SIZE);
+
//! Auxiliary tool for merging nodes during STL reading.
class MergeNodeTool
{
// use method seekpos() to get true 64-bit offset to enable
// handling of large files (VS 2010 64-bit)
const int64_t aStartPos = GETPOS(theStream.tellg());
- // Note: 1 is added to theUntilPos to be sure to read the last symbol (relevant for files without EOL at the end)
- const int64_t aEndPos = (theUntilPos > 0 ? 1 + GETPOS(theUntilPos) : std::numeric_limits<int64_t>::max());
+ size_t aLineLen = 0;
+ const char* aLine;
// skip header "solid ..."
- theStream.ignore ((std::streamsize)(aEndPos - aStartPos), '\n');
- if (!theStream)
+ aLine = THE_BUFFER.ReadLine (theStream, aLineLen);
+ if (aLine == NULL)
{
Message::DefaultMessenger()->Send ("Error: premature end of file", Message_Fail);
return false;
const int aStepB = 1024 * 1024;
const Standard_Integer aNbSteps = 1 + Standard_Integer((GETPOS(theUntilPos) - aStartPos) / aStepB);
Message_ProgressSentry aPSentry (theProgress, "Reading text STL file", 0, aNbSteps, 1);
-
int64_t aProgressPos = aStartPos + aStepB;
- const int64_t LINELEN = 1024;
int aNbLine = 1;
- char aLine1[LINELEN], aLine2[LINELEN], aLine3[LINELEN];
+
while (aPSentry.More())
{
if (GETPOS(theStream.tellg()) > aProgressPos)
aProgressPos += aStepB;
}
- char facet[LINELEN], outer[LINELEN];
- theStream.getline (facet, (std::streamsize)std::min (LINELEN, aEndPos - GETPOS(theStream.tellg()))); // "facet normal nx ny nz"
- if (str_starts_with (facet, "endsolid", 8))
+ aLine = THE_BUFFER.ReadLine (theStream, aLineLen); // "facet normal nx ny nz"
+ if (aLine == NULL)
+ {
+ Message::DefaultMessenger()->Send ("Error: premature end of file", Message_Fail);
+ return false;
+ }
+ if (str_starts_with (aLine, "endsolid", 8))
{
// end of STL code
break;
}
- theStream.getline (outer, (std::streamsize)std::min (LINELEN, aEndPos - GETPOS(theStream.tellg()))); // "outer loop"
- if (!str_starts_with (facet, "facet", 5) || !str_starts_with (outer, "outer", 5))
+ if (!str_starts_with (aLine, "facet", 5))
{
TCollection_AsciiString aStr ("Error: unexpected format of facet at line ");
aStr += aNbLine + 1;
return false;
}
- theStream.getline (aLine1, (std::streamsize)std::min (LINELEN, aEndPos - GETPOS(theStream.tellg())));
- theStream.getline (aLine2, (std::streamsize)std::min (LINELEN, aEndPos - GETPOS(theStream.tellg())));
- theStream.getline (aLine3, (std::streamsize)std::min (LINELEN, aEndPos - GETPOS(theStream.tellg())));
-
- // stop reading if end of file is reached;
- // note that well-formatted file never ends by the vertex line
- if (theStream.eof() || GETPOS(theStream.tellg()) >= aEndPos)
+ aLine = THE_BUFFER.ReadLine (theStream, aLineLen); // "outer loop"
+ if (aLine == NULL || !str_starts_with (aLine, "outer", 5))
{
- break;
+ TCollection_AsciiString aStr ("Error: unexpected format of facet at line ");
+ aStr += aNbLine + 1;
+ Message::DefaultMessenger()->Send (aStr, Message_Fail);
+ return false;
}
- if (!theStream)
+ gp_XYZ aVertex[3];
+ Standard_Boolean isEOF = false;
+ for (Standard_Integer i = 0; i < 3; i++)
{
- Message::DefaultMessenger()->Send ("Error: premature end of file", Message_Fail);
- return false;
+ aLine = THE_BUFFER.ReadLine (theStream, aLineLen);
+ if (aLine == NULL)
+ {
+ isEOF = true;
+ break;
+ }
+ gp_XYZ aReadVertex;
+ if (!ReadVertex (aLine, aReadVertex.ChangeCoord (1), aReadVertex.ChangeCoord (2), aReadVertex.ChangeCoord (3)))
+ {
+ TCollection_AsciiString aStr ("Error: cannot read vertex co-ordinates at line ");
+ aStr += aNbLine;
+ Message::DefaultMessenger()->Send (aStr, Message_Fail);
+ return false;
+ }
+ aVertex[i] = aReadVertex;
}
- aNbLine += 5;
- Standard_Real x1, y1, z1, x2, y2, z2, x3, y3, z3;
- if (! ReadVertex (aLine1, x1, y1, z1) ||
- ! ReadVertex (aLine2, x2, y2, z2) ||
- ! ReadVertex (aLine3, x3, y3, z3))
+ // stop reading if end of file is reached;
+ // note that well-formatted file never ends by the vertex line
+ if (isEOF)
{
- TCollection_AsciiString aStr ("Error: cannot read vertex co-ordinates at line ");
- aStr += aNbLine;
- Message::DefaultMessenger()->Send(aStr, Message_Fail);
- return false;
+ break;
}
+ aNbLine += 5;
+
// add triangle
- int n1 = aMergeTool.AddNode (x1, y1, z1);
- int n2 = aMergeTool.AddNode (x2, y2, z2);
- int n3 = aMergeTool.AddNode (x3, y3, z3);
+ int n1 = aMergeTool.AddNode (aVertex[0].X(), aVertex[0].Y(), aVertex[0].Z());
+ int n2 = aMergeTool.AddNode (aVertex[1].X(), aVertex[1].Y(), aVertex[1].Z());
+ int n3 = aMergeTool.AddNode (aVertex[2].X(), aVertex[2].Y(), aVertex[2].Z());
if (n1 != n2 && n2 != n3 && n3 != n1)
{
AddTriangle (n1, n2, n3);
}
- theStream.ignore ((std::streamsize)(aEndPos - GETPOS(theStream.tellg())), '\n'); // skip "endloop"
- theStream.ignore ((std::streamsize)(aEndPos - GETPOS(theStream.tellg())), '\n'); // skip "endfacet"
+ THE_BUFFER.ReadLine (theStream, aLineLen); // skip "endloop"
+ THE_BUFFER.ReadLine (theStream, aLineLen); // skip "endfacet"
aNbLine += 2;
}
projects / occt.git / blobdiff