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Fix getting file from symbol linked directory.

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This commit is contained in:
Cheng Zhao 2014-09-28 22:46:29 +08:00
parent 150739e19e
commit cebafeae40
1 changed files with 24 additions and 6 deletions
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30
atom/common/asar/archive.cc
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@ -18,14 +18,31 @@ namespace asar {
namespace {
bool GetChildNode(const std::string& name,
const base::DictionaryValue* root,
bool GetNodeFromPath(std::string path,
const base::DictionaryValue* root,
const base::DictionaryValue** out);
// Gets sub-file "name" from "dir".
bool GetChildNode(const base::DictionaryValue* root,
const std::string& name,
const base::DictionaryValue* dir,
const base::DictionaryValue** out) {
// Test for symbol linked directory.
std::string link;
if (dir->GetStringWithoutPathExpansion("link", &link)) {
const base::DictionaryValue* linked_node = NULL;
if (!GetNodeFromPath(link, root, &linked_node))
return false;
dir = linked_node;
}
// Otherwise search for the "files" map.
const base::DictionaryValue* files = NULL;
return root->GetDictionaryWithoutPathExpansion("files", &files) &&
return dir->GetDictionaryWithoutPathExpansion("files", &files) &&
files->GetDictionaryWithoutPathExpansion(name, out);
}
// Gets the node of "path" from "root".
bool GetNodeFromPath(std::string path,
const base::DictionaryValue* root,
const base::DictionaryValue** out) {
@ -34,18 +51,19 @@ bool GetNodeFromPath(std::string path,
return true;
}
const base::DictionaryValue* dir = root;
for (size_t delimiter_position = path.find('/');
delimiter_position != std::string::npos;
delimiter_position = path.find('/')) {
const base::DictionaryValue* child = NULL;
if (!GetChildNode(path.substr(0, delimiter_position), root, &child))
if (!GetChildNode(root, path.substr(0, delimiter_position), dir, &child))
return false;
root = child;
dir = child;
path.erase(0, delimiter_position + 1);
}
return GetChildNode(path, root, out);
return GetChildNode(root, path, dir, out);
}
bool FillFileInfoWithNode(Archive::FileInfo* info,