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DirectorySave: save the flags "DEVICE_INARCHIVE" and "DEVICE_CONTAINER"

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Helps avoid unnecessary archive scans during database update on a
fresh MPD process.
This commit is contained in:
Max Kellermann 2014-02-24 18:14:19 +01:00
parent 167803d2a1
commit cb145d290e
1 changed files with 37 additions and 0 deletions
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37
src/db/DirectorySave.cxx
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@ -31,18 +31,52 @@
#include "util/Domain.hxx"
#include <stddef.h>
#include <string.h>
#define DIRECTORY_DIR "directory: "
#define DIRECTORY_TYPE "type: "
#define DIRECTORY_MTIME "mtime: "
#define DIRECTORY_BEGIN "begin: "
#define DIRECTORY_END "end: "
static constexpr Domain directory_domain("directory");
gcc_const
static const char *
DeviceToTypeString(unsigned device)
{
switch (device) {
case DEVICE_INARCHIVE:
return "archive";
case DEVICE_CONTAINER:
return "container";
default:
return nullptr;
}
}
gcc_pure
static unsigned
ParseTypeString(const char *type)
{
if (strcmp(type, "archive") == 0)
return DEVICE_INARCHIVE;
else if (strcmp(type, "container") == 0)
return DEVICE_CONTAINER;
else
return 0;
}
void
directory_save(FILE *fp, const Directory &directory)
{
if (!directory.IsRoot()) {
const char *type = DeviceToTypeString(directory.device);
if (type != nullptr)
fprintf(fp, DIRECTORY_TYPE "%s\n", type);
if (directory.mtime != 0)
fprintf(fp, DIRECTORY_MTIME "%lu\n",
(unsigned long)directory.mtime);
@ -76,6 +110,9 @@ ParseLine(Directory &directory, const char *line)
if (StringStartsWith(line, DIRECTORY_MTIME)) {
directory.mtime =
ParseUint64(line + sizeof(DIRECTORY_MTIME) - 1);
} else if (StringStartsWith(line, DIRECTORY_TYPE)) {
directory.device =
ParseTypeString(line + sizeof(DIRECTORY_TYPE) - 1);
} else
return false;