1 files changed, 212 insertions, 0 deletions
diff --git a/xpcom/build/FileLocation.cpp b/xpcom/build/FileLocation.cpp
new file mode 100644
index 0000000000..bb090c2b94
--- /dev/null
+++ b/xpcom/build/FileLocation.cpp
@@ -0,0 +1,212 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "FileLocation.h"
+#include "nsZipArchive.h"
+#include "nsURLHelper.h"
+
+namespace mozilla {
+
+FileLocation::FileLocation() = default;
+
+FileLocation::~FileLocation() = default;
+
+FileLocation::FileLocation(nsIFile* aFile) { Init(aFile); }
+
+FileLocation::FileLocation(nsIFile* aFile, const char* aPath) {
+  Init(aFile, aPath);
+}
+
+FileLocation::FileLocation(nsZipArchive* aZip, const char* aPath) {
+  Init(aZip, aPath);
+}
+
+FileLocation::FileLocation(const FileLocation& aOther)
+
+    = default;
+
+FileLocation::FileLocation(FileLocation&& aOther)
+    : mBaseFile(std::move(aOther.mBaseFile)),
+      mBaseZip(std::move(aOther.mBaseZip)),
+      mPath(std::move(aOther.mPath)) {
+  aOther.mPath.Truncate();
+}
+
+FileLocation::FileLocation(const FileLocation& aFile, const char* aPath) {
+  if (aFile.IsZip()) {
+    if (aFile.mBaseFile) {
+      Init(aFile.mBaseFile, aFile.mPath.get());
+    } else {
+      Init(aFile.mBaseZip, aFile.mPath.get());
+    }
+    if (aPath) {
+      int32_t i = mPath.RFindChar('/');
+      if (kNotFound == i) {
+        mPath.Truncate(0);
+      } else {
+        mPath.Truncate(i + 1);
+      }
+      mPath += aPath;
+    }
+  } else {
+    if (aPath) {
+      nsCOMPtr<nsIFile> cfile;
+      aFile.mBaseFile->GetParent(getter_AddRefs(cfile));
+
+#if defined(XP_WIN)
+      nsAutoCString pathStr(aPath);
+      char* p;
+      uint32_t len = pathStr.GetMutableData(&p);
+      for (; len; ++p, --len) {
+        if ('/' == *p) {
+          *p = '\\';
+        }
+      }
+      cfile->AppendRelativeNativePath(pathStr);
+#else
+      cfile->AppendRelativeNativePath(nsDependentCString(aPath));
+#endif
+      Init(cfile);
+    } else {
+      Init(aFile.mBaseFile);
+    }
+  }
+}
+
+void FileLocation::Init(nsIFile* aFile) {
+  mBaseZip = nullptr;
+  mBaseFile = aFile;
+  mPath.Truncate();
+}
+
+void FileLocation::Init(nsIFile* aFile, const char* aPath) {
+  mBaseZip = nullptr;
+  mBaseFile = aFile;
+  mPath = aPath;
+}
+
+void FileLocation::Init(nsZipArchive* aZip, const char* aPath) {
+  mBaseZip = aZip;
+  mBaseFile = nullptr;
+  mPath = aPath;
+}
+
+void FileLocation::GetURIString(nsACString& aResult) const {
+  if (mBaseFile) {
+    net_GetURLSpecFromActualFile(mBaseFile, aResult);
+  } else if (mBaseZip) {
+    RefPtr<nsZipHandle> handler = mBaseZip->GetFD();
+    handler->mFile.GetURIString(aResult);
+  }
+  if (IsZip()) {
+    aResult.InsertLiteral("jar:", 0);
+    aResult += "!/";
+    aResult += mPath;
+  }
+}
+
+already_AddRefed<nsIFile> FileLocation::GetBaseFile() {
+  if (IsZip() && mBaseZip) {
+    RefPtr<nsZipHandle> handler = mBaseZip->GetFD();
+    if (handler) {
+      return handler->mFile.GetBaseFile();
+    }
+    return nullptr;
+  }
+
+  nsCOMPtr<nsIFile> file = mBaseFile;
+  return file.forget();
+}
+
+bool FileLocation::Equals(const FileLocation& aFile) const {
+  if (mPath != aFile.mPath) {
+    return false;
+  }
+
+  if (mBaseFile && aFile.mBaseFile) {
+    bool eq;
+    return NS_SUCCEEDED(mBaseFile->Equals(aFile.mBaseFile, &eq)) && eq;
+  }
+
+  const FileLocation* a = this;
+  const FileLocation* b = &aFile;
+  if (a->mBaseZip) {
+    RefPtr<nsZipHandle> handler = a->mBaseZip->GetFD();
+    a = &handler->mFile;
+  }
+  if (b->mBaseZip) {
+    RefPtr<nsZipHandle> handler = b->mBaseZip->GetFD();
+    b = &handler->mFile;
+  }
+
+  return a->Equals(*b);
+}
+
+nsresult FileLocation::GetData(Data& aData) {
+  if (!IsZip()) {
+    return mBaseFile->OpenNSPRFileDesc(PR_RDONLY, 0444, &aData.mFd.rwget());
+  }
+  aData.mZip = mBaseZip;
+  if (!aData.mZip) {
+    // this can return nullptr
+    aData.mZip = nsZipArchive::OpenArchive(mBaseFile);
+  }
+  if (aData.mZip) {
+    aData.mItem = aData.mZip->GetItem(mPath.get());
+    if (aData.mItem) {
+      return NS_OK;
+    }
+  }
+  return NS_ERROR_FILE_UNRECOGNIZED_PATH;
+}
+
+nsresult FileLocation::Data::GetSize(uint32_t* aResult) {
+  if (mFd) {
+    PRFileInfo64 fileInfo;
+    if (PR_SUCCESS != PR_GetOpenFileInfo64(mFd, &fileInfo)) {
+      return NS_ErrorAccordingToNSPR();
+    }
+
+    if (fileInfo.size > int64_t(UINT32_MAX)) {
+      return NS_ERROR_FILE_TOO_BIG;
+    }
+
+    *aResult = fileInfo.size;
+    return NS_OK;
+  }
+  if (mItem) {
+    *aResult = mItem->RealSize();
+    return NS_OK;
+  }
+  return NS_ERROR_NOT_INITIALIZED;
+}
+
+nsresult FileLocation::Data::Copy(char* aBuf, uint32_t aLen) {
+  if (mFd) {
+    for (uint32_t totalRead = 0; totalRead < aLen;) {
+      int32_t read = PR_Read(mFd, aBuf + totalRead,
+                             XPCOM_MIN(aLen - totalRead, uint32_t(INT32_MAX)));
+      if (read < 0) {
+        return NS_ErrorAccordingToNSPR();
+      }
+      totalRead += read;
+    }
+    return NS_OK;
+  }
+  if (mItem) {
+    nsZipCursor cursor(mItem, mZip, reinterpret_cast<uint8_t*>(aBuf), aLen,
+                       true);
+    uint32_t readLen;
+    cursor.Copy(&readLen);
+    if (readLen != aLen) {
+      return NS_ERROR_FILE_CORRUPTED;
+    }
+    return NS_OK;
+  }
+  return NS_ERROR_NOT_INITIALIZED;
+}
+
+} /* namespace mozilla */