syncfiles/convert/convert.c

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// Copyright 2022 Dietrich Epp.
// This file is part of SyncFiles. SyncFiles is licensed under the terms of the
// Mozilla Public License, version 2.0. See LICENSE.txt for details.
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#include "convert/convert.h"
struct ConvertEngine {
ConvertBuildf build;
ConvertRunf run;
};
const struct ConvertEngine kEngines[][2] = {
{{Convert1fBuild, Convert1fRun}, {Convert1rBuild, Convert1rRun}}};
int ConverterBuild(struct Converter *c, Handle data, Size datasz,
ConvertDirection direction)
{
int engine;
const struct ConvertEngine *funcs;
Handle out;
ErrorCode err;
if (datasz == 0) {
return kErrorBadData;
}
engine = (UInt8)(**data) - 1;
if (engine < 0 || (int)(sizeof(kEngines) / sizeof(*kEngines)) <= engine) {
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// Invalid engine.
return kErrorBadData;
}
funcs = &kEngines[engine][direction];
if (funcs->build == NULL || funcs->run == NULL) {
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// Invalid engine.
return kErrorBadData;
}
err = funcs->build(&out, data, datasz);
if (err != 0) {
return err;
}
c->data = out;
c->run = funcs->run;
return 0;
}