Function collapsePath

Engine/source/console/console.cpp:2318–2387

//-----------------------------------------------------------------------------

void collapsePath(char* pDstPath, U32 size, const char* pSrcPath, const char* pWorkingDirectoryHint)
{
   // Check path against expandos.  If there are multiple matches, choose the
   // expando that produces the shortest relative path.

   char pathBuffer[2048];

   // Fetch expando count.
   const U32 expandoCount = getPathExpandoCount();

   // Iterate expandos.
   U32 expandoRelativePathLength = U32_MAX;
   for (U32 expandoIndex = 0; expandoIndex < expandoCount; ++expandoIndex)
   {
      // Fetch expando value (path).
      StringTableEntry expandoValue = getPathExpandoValue(expandoIndex);

      // Skip if not the base path.
      if (!isBasePath(pSrcPath, expandoValue))
         continue;

      // Fetch path relative to expando path.
      StringTableEntry relativePath = Platform::makeRelativePathName(pSrcPath, expandoValue);

      // If the relative path is simply a period
      if (relativePath[0] == '.')
         relativePath++;

      if (dStrlen(relativePath) > expandoRelativePathLength)
      {
         // This expando covers less of the path than any previous one found.
         // We will keep the previous one.
         continue;
      }

      // Keep track of the relative path length
      expandoRelativePathLength = dStrlen(relativePath);

      // Fetch expando key (name).
      StringTableEntry expandoName = getPathExpandoKey(expandoIndex);

      // Format against expando.
      dSprintf(pathBuffer, sizeof(pathBuffer), "^%s/%s", expandoName, relativePath);
   }

   // Check if we've found a suitable expando
   if (expandoRelativePathLength != U32_MAX)
   {
      // Strip repeat slashes.
      Con::stripRepeatSlashes(pDstPath, pathBuffer, size);

      return;
   }

   // Fetch the working directory.
   StringTableEntry workingDirectory = pWorkingDirectoryHint != NULL ? pWorkingDirectoryHint : Platform::getCurrentDirectory();

   // Fetch path relative to current directory.