7f40c3f477
## Summary Continue my changes to introduce the HAL infrastructure from https://github.com/crosspoint-reader/crosspoint-reader/pull/522 This PR touches quite a lot of files, but most of them are just name changing. It should not have any impacts to the end behavior. ## Additional Context My plan is to firstly add this small shim layer, which sounds useless at first, but then I'll implement an emulated driver which can be helpful for testing and for development. Currently, on my fork, I'm using a FS driver that allow "mounting" a local directory from my computer to the device, much like the `-v` mount option on docker. This allows me to quickly reset `.crosspoint` directory if anything goes wrong. I plan to upstream this feature when this PR get merged. --- ### AI Usage While CrossPoint doesn't have restrictions on AI tools in contributing, please be transparent about their usage as it helps set the right context for reviewers. Did you use AI tools to help write this code? NO
97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
#include "KOReaderDocumentId.h"
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#include <HalStorage.h>
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#include <HardwareSerial.h>
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#include <MD5Builder.h>
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namespace {
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// Extract filename from path (everything after last '/')
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std::string getFilename(const std::string& path) {
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const size_t pos = path.rfind('/');
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if (pos == std::string::npos) {
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return path;
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}
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return path.substr(pos + 1);
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}
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} // namespace
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std::string KOReaderDocumentId::calculateFromFilename(const std::string& filePath) {
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const std::string filename = getFilename(filePath);
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if (filename.empty()) {
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return "";
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}
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MD5Builder md5;
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md5.begin();
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md5.add(filename.c_str());
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md5.calculate();
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std::string result = md5.toString().c_str();
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Serial.printf("[%lu] [KODoc] Filename hash: %s (from '%s')\n", millis(), result.c_str(), filename.c_str());
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return result;
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}
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size_t KOReaderDocumentId::getOffset(int i) {
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// Offset = 1024 << (2*i)
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// For i = -1: KOReader uses a value of 0
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// For i >= 0: 1024 << (2*i)
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if (i < 0) {
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return 0;
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}
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return CHUNK_SIZE << (2 * i);
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}
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std::string KOReaderDocumentId::calculate(const std::string& filePath) {
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FsFile file;
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if (!Storage.openFileForRead("KODoc", filePath, file)) {
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Serial.printf("[%lu] [KODoc] Failed to open file: %s\n", millis(), filePath.c_str());
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return "";
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}
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const size_t fileSize = file.fileSize();
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Serial.printf("[%lu] [KODoc] Calculating hash for file: %s (size: %zu)\n", millis(), filePath.c_str(), fileSize);
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// Initialize MD5 builder
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MD5Builder md5;
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md5.begin();
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// Buffer for reading chunks
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uint8_t buffer[CHUNK_SIZE];
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size_t totalBytesRead = 0;
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// Read from each offset (i = -1 to 10)
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for (int i = -1; i < OFFSET_COUNT - 1; i++) {
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const size_t offset = getOffset(i);
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// Skip if offset is beyond file size
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if (offset >= fileSize) {
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continue;
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}
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// Seek to offset
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if (!file.seekSet(offset)) {
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Serial.printf("[%lu] [KODoc] Failed to seek to offset %zu\n", millis(), offset);
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continue;
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}
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// Read up to CHUNK_SIZE bytes
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const size_t bytesToRead = std::min(CHUNK_SIZE, fileSize - offset);
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const size_t bytesRead = file.read(buffer, bytesToRead);
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if (bytesRead > 0) {
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md5.add(buffer, bytesRead);
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totalBytesRead += bytesRead;
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}
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}
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file.close();
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// Calculate final hash
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md5.calculate();
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std::string result = md5.toString().c_str();
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Serial.printf("[%lu] [KODoc] Hash calculated: %s (from %zu bytes)\n", millis(), result.c_str(), totalBytesRead);
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return result;
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}
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