thirdparty/scummvm
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BASE: Add --md5-engine flag

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Pragyansh Chaturvedi (r41k0u) 2022-03-17 01:39:42 +05:30 • committed by Thierry Crozat
parent bc0bd86594
commit 2e656c30d3
3 changed files with 37 additions and 4 deletions
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33
base/commandLine.cpp
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@ -45,6 +45,7 @@
#include "audio/musicplugin.h"
#include "graphics/renderer.h"
#include "advancedDetector.h"
#define DETECTOR_TESTING_HACK
#define UPGRADE_ALL_TARGETS_HACK
@ -211,8 +212,14 @@ static const char HELP_STRING[] =
" --md5 Shows MD5 hash of the file given by --md5-path=PATH\n"
" If --md5-length=NUM is passed then it shows the MD5 hash of\n"
" the first NUM bytes of the file given by PATH\n"
" If --md5-engine=ENGINE_ID is passed, it fetches the MD5 length\n"
" automatically, overriding --md5-length\n"
" --md5-path=PATH Used with --md5 to specify path of file to calculate MD5 hash of\n"
" --md5-length=NUM Used with --md5 to specify the number of bytes to be hashed\n"
" Is overriden when used with --md5-engine\n"
" --md5-engine=ENGINE_ID Used with --md5 to specify the engine for which number of bytes\n"
" to be hashed must be calculated. This option overrides --md5-length\n"
" if used along with it. Use --list-engines to find all engineIds\n"
"\n"
"The meaning of boolean long options can be inverted by prefixing them with\n"
"\"no-\", e.g. \"--no-aspect-ratio\".\n"
@ -829,6 +836,9 @@ Common::String parseCommandLine(Common::StringMap &settings, int argc, const cha
}
END_OPTION
DO_LONG_OPTION("md5-engine")
END_OPTION
DO_LONG_OPTION_INT("talkspeed")
END_OPTION
@ -1366,7 +1376,7 @@ static void calcMD5(Common::FSNode &path, long int length) {
Common::SeekableReadStream *stream = path.createReadStream();
if (stream) {
Common::String md5 = Common::computeStreamMD5AsString(*stream, length);
printf("(hash) : %s, (filename) : %s, (bytes) : %d\n", md5.c_str(), path.getName().c_str(), length ? (int32)length : (int32)stream->size());
printf("(hash) : %s, (filename) : %s, (bytes) : %d\n", md5.c_str(), path.getName().c_str(), length && length <= stream->size() ? (int32)length : (int32)stream->size());
delete stream;
} else {
printf("Usage : --md5 --md5-path=<PATH> [--md5-length=NUM]\n");
@ -1676,6 +1686,27 @@ bool processSettings(Common::String &command, Common::StringMap &settings, Commo
long int md5Length = 0;
if (settings.contains("md5-length"))
md5Length = settings["md5-length"].asUint64();
if (settings.contains("md5-engine")) {
Common::String engineID = settings["md5-engine"];
if (engineID == "scumm") {
// Hardcoding value as scumm doesn't use AdvancedMetaEngineDetection
md5Length = 1024 * 1024;
} else {
const Plugin *plugin = EngineMan.findPlugin(engineID);
if (!plugin) {
warning("'%s' is an invalid engine ID. Use the --list-engines command to list supported engine IDs", engineID.c_str());
return true;
}
const AdvancedMetaEngineDetection* advEnginePtr = dynamic_cast<AdvancedMetaEngineDetection*>(&(plugin->get<MetaEngineDetection>()));
if (advEnginePtr == nullptr) {
warning("This engine doesn't support MD5 based detection");
return true;
}
md5Length = (long int) advEnginePtr->getMD5Bytes();
}
}
calcMD5(path, md5Length);
return true;
#ifdef DETECTOR_TESTING_HACK