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Common: Make recursive FileUtil functions take a maximum recursion

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Fixes #1115.

Also improves the performances of DiskArchive’s directory
implementation a lot, simply by not going through the entire tree
instead of just listing the first level files.

Thanks to JayRoxFox for rebasing this on current master!
This commit is contained in:
Emmanuel Gil Peyrot 2015-09-06 07:59:04 +01:00
parent 51ee2d2eb1
commit 8ab6f26c09
4 changed files with 43 additions and 30 deletions
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12
src/common/file_util.h
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@ -105,11 +105,13 @@ bool CreateEmptyFile(const std::string &filename);
* @param num_entries_out to be assigned by the callable with the number of iterated directory entries, never null
* @param directory the path to the enclosing directory
* @param virtual_name the entry name, without any preceding directory info
* @param recursion Number of children directory to read before giving up
* @return whether handling the entry succeeded
*/
using DirectoryEntryCallable = std::function<bool(unsigned* num_entries_out,
const std::string& directory,
const std::string& virtual_name)>;
const std::string& virtual_name,
unsigned int recursion)>;
/**
* Scans a directory, calling the callback for each file/directory contained within.
@ -117,20 +119,22 @@ using DirectoryEntryCallable = std::function<bool(unsigned* num_entries_out,
* @param num_entries_out assigned by the function with the number of iterated directory entries, can be null
* @param directory the directory to scan
* @param callback The callback which will be called for each entry
* @param recursion Number of children directories to read before giving up
* @return whether scanning the directory succeeded
*/
bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string &directory, DirectoryEntryCallable callback);
bool ForeachDirectoryEntry(unsigned* num_entries_out, const std::string &directory, DirectoryEntryCallable callback, unsigned int recursion = 0);
/**
* Scans the directory tree, storing the results.
* @param directory the parent directory to start scanning from
* @param parent_entry FSTEntry where the filesystem tree results will be stored.
* @param recursion Number of children directories to read before giving up.
* @return the total number of files/directories found
*/
unsigned ScanDirectoryTree(const std::string &directory, FSTEntry& parent_entry);
unsigned ScanDirectoryTree(const std::string &directory, FSTEntry& parent_entry, unsigned int recursion = 0);
// deletes the given directory and anything under it. Returns true on success.
bool DeleteDirRecursively(const std::string &directory);
bool DeleteDirRecursively(const std::string &directory, unsigned int recursion = 256);
// Returns the current directory
std::string GetCurrentDir();