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85 lines
2.6 KiB
85 lines
2.6 KiB
4 months ago
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// Copyright 2011 The Android Open Source Project
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//
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#ifndef MOCKDIRECTORYWALKER_H
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#define MOCKDIRECTORYWALKER_H
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#include <utils/Vector.h>
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#include <utils/String8.h>
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#include <utility>
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#include "DirectoryWalker.h"
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using namespace android;
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using std::pair;
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// String8 Directory Walker
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// This is an implementation of the Directory Walker abstraction that is built
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// for testing.
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// Instead of system calls it queries a private data structure for the directory
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// entries. It takes a path and a map of filenames and their modification times.
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// functions are inlined since they are short and simple
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class StringDirectoryWalker : public DirectoryWalker {
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public:
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StringDirectoryWalker(String8& path, Vector< pair<String8,time_t> >& data)
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: mPos(0), mBasePath(path), mData(data) {
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//fprintf(stdout,"StringDW built to mimic %s with %d files\n",
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// mBasePath.string());
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};
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// Default copy constructor, and destructor are fine
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virtual bool openDir(String8 path) {
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// If the user is trying to query the "directory" that this
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// walker was initialized with, then return success. Else fail.
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return path == mBasePath;
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};
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virtual bool openDir(const char* path) {
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String8 p(path);
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openDir(p);
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return true;
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};
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// Advance to next entry in the Vector
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virtual struct dirent* nextEntry() {
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// Advance position and check to see if we're done
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if (mPos >= mData.size())
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return NULL;
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// Place data in the entry descriptor. This class only returns files.
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mEntry.d_type = DT_REG;
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mEntry.d_ino = mPos;
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// Copy chars from the string name to the entry name
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size_t i = 0;
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for (i; i < mData[mPos].first.size(); ++i)
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mEntry.d_name[i] = mData[mPos].first[i];
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mEntry.d_name[i] = '\0';
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// Place data in stats
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mStats.st_ino = mPos;
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mStats.st_mtime = mData[mPos].second;
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// Get ready to move to the next entry
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mPos++;
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return &mEntry;
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};
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// Get the stats for the current entry
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virtual struct stat* entryStats() {
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return &mStats;
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};
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// Nothing to do in clean up
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virtual void closeDir() {
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// Nothing to do
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};
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virtual DirectoryWalker* clone() {
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return new StringDirectoryWalker(*this);
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};
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private:
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// Current position in the Vector
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size_t mPos;
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// Base path
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String8 mBasePath;
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// Data to simulate a directory full of files.
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Vector< pair<String8,time_t> > mData;
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};
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#endif // MOCKDIRECTORYWALKER_H
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