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add makeFileName()

This commit is contained in:
Dick Hollenbeck 2010-12-20 11:12:41 -06:00
parent 02ba568c25
commit 325a13a79d
2 changed files with 80 additions and 38 deletions
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96
new/sch_dir_lib_source.cpp
View File

@ -150,7 +150,7 @@ static const char* endsWithRev( const char* start, const char* tail, char separa
{
tail -= 3;
if( tail[0]==separator && tail[1]=='r' && tail[2]=='e' && tail[2]=='v' )
if( tail[0]==separator && tail[1]=='r' && tail[2]=='e' && tail[3]=='v' )
{
return tail+1; // omit separator, return "revN[N..]"
}
@ -159,13 +159,14 @@ static const char* endsWithRev( const char* start, const char* tail, char separa
return 0;
}
// see struct BY_REV
bool BY_REV::operator() ( const STRING& s1, const STRING& s2 ) const
{
// avoid instantiating new STRINGs, and thank goodness that c_str() is const.
const char* rev1 = endsWithRev( s1.c_str(), s1.c_str()+s1.size(), '/' );
const char* rev2 = endsWithRev( s2.c_str(), s2.c_str()+s2.size(), '/' );
// avoid instantiating new STRINGs
int rootLen1 = rev1 ? rev1 - s1.c_str() : s1.size();
int rootLen2 = rev2 ? rev2 - s2.c_str() : s2.size();
@ -181,7 +182,7 @@ bool BY_REV::operator() ( const STRING& s1, const STRING& s2 ) const
return rootLen1 < rootLen2;
}
// root strings match at this point, compare the revision number, numerically
// root strings match at this point, compare the revision number numerically,
// and chose the higher numbered version as "less", according to std::set lingo.
if( bool(rev1) != bool(rev2) )
@ -197,12 +198,12 @@ bool BY_REV::operator() ( const STRING& s1, const STRING& s2 ) const
return rnum1 > rnum2;
}
return false; // strings are equal
return false; // strings are equal, and they don't have a rev
}
bool DIR_LIB_SOURCE::makePartFileName( const char* aEntry,
const STRING& aCategory, STRING* aPartName )
bool DIR_LIB_SOURCE::makePartName( STRING* aPartName, const char* aEntry,
const STRING& aCategory )
{
const char* cp = strrstr( aEntry, ".part" );
@ -211,19 +212,7 @@ bool DIR_LIB_SOURCE::makePartFileName( const char* aEntry,
{
const char* limit = cp + strlen( cp );
// if file extension is exactly ".part", and no rev
if( cp==limit-5 )
{
if( aCategory.size() )
*aPartName = aCategory + "/";
else
aPartName->clear();
aPartName->append( aEntry, cp - aEntry );
return true;
}
// if versioning, test for a trailing "revN.." type of string
// If versioning, then must find a trailing "revN.." type of string.
if( useVersioning )
{
const char* rev = endsWithRev( cp + sizeof(".part") - 1, limit, '.' );
@ -240,14 +229,52 @@ bool DIR_LIB_SOURCE::makePartFileName( const char* aEntry,
return true;
}
}
// If using versioning, then all valid partnames must have a rev string,
// so we don't even bother to try and load any other partfile down here.
else
{
// if file extension is exactly ".part", and no rev
if( cp==limit-5 )
{
if( aCategory.size() )
*aPartName = aCategory + "/";
else
aPartName->clear();
aPartName->append( aEntry, cp - aEntry );
return true;
}
}
}
return false;
}
static bool isCategoryName( const char* aName )
STRING DIR_LIB_SOURCE::makeFileName( const STRING& aPartName )
{
return true;
// create a fileName for the sweet string, using a reversible
// partname <-> fileName conversion protocol:
STRING fileName = sourceURI + "/";
const char* rev = endsWithRev( aPartName.c_str(), aPartName.c_str()+aPartName.size(), '/' );
if( rev )
{
int basePartLen = rev - aPartName.c_str() - 1; // omit '/' separator
fileName.append( aPartName, 0, basePartLen );
fileName += ".part."; // add '.' separator before rev
fileName += rev;
}
else
{
fileName += aPartName;
fileName += ".part";
}
return fileName;
}
@ -342,22 +369,30 @@ void DIR_LIB_SOURCE::GetCategoricalPartNames( STRINGS* aResults, const STRING& a
for( PART_CACHE::const_iterator it = partnames.lower_bound( lower ); it!=limit; ++it )
{
/*
const char* start = it->c_str();
size_t len = it->size();
if( !endsWithRev( start, start+len, '/' ) )
aResults->push_back( *it );
if( endsWithRev( start, start+len, '/' ) )
continue;
*/
aResults->push_back( *it );
}
}
else
{
for( PART_CACHE::const_iterator it = partnames.begin(); it!=partnames.end(); ++it )
{
/*
const char* start = it->c_str();
size_t len = it->size();
if( !endsWithRev( start, start+len, '/' ) )
aResults->push_back( *it );
continue;
*/
aResults->push_back( *it );
}
}
}
@ -379,13 +414,12 @@ void DIR_LIB_SOURCE::ReadPart( STRING* aResult, const STRING& aPartName, const S
throw IO_ERROR( partname.c_str() );
}
// create a filename for the sweet string
STRING filename = sourceURI + "/" + aPartName + ".part";
// create a fileName for the sweet string
STRING fileName = makeFileName( aPartName );
if( aRev.size() )
filename += "." + aRev;
// @todo what about aRev?, and define the public API wrt to aRev better.
readSExpression( aResult, filename );
readSExpression( aResult, fileName );
}
@ -464,7 +498,7 @@ void DIR_LIB_SOURCE::cacheOneDir( const STRING& aCategory ) throw( IO_ERROR )
if( !stat( fileName.c_str(), &fs ) )
{
// is this a valid part name?
if( S_ISREG( fs.st_mode ) && makePartFileName( entry->d_name, aCategory, &partName ) )
if( S_ISREG( fs.st_mode ) && makePartName( &partName, entry->d_name, aCategory ) )
{
std::pair<NAME_CACHE::iterator, bool> pair = partnames.insert( partName );

22
new/sch_dir_lib_source.h
View File

@ -89,22 +89,24 @@ class DIR_LIB_SOURCE : public LIB_SOURCE
void cache() throw( IO_ERROR );
/**
* Function isPartFileName
* returns true iff aName is a valid part file name.
* Function isCategoryName
* returns true iff aName is a valid category name.
*/
bool isPartFileName( const char* aName );
bool isCategoryName( const char* aName )
{
return true;
}
/**
* Function makePartFileName
* Function makePartName
* returns true iff aEntry holds a valid part filename, in the form of
* "someroot.part[.revNNNN]" where NNN are number characters [0-9]
* @param aEntry is the raw directory entry without path information.
* @param aCategory is the last portion of the directory path.
* @param aPartName is where to put a part name, assuming aEntry is legal.
* @param aPartName is where to put a part name, assuming @a aEntry is legal.
* @return bool - true only if aEntry is a legal part file name.
*/
bool makePartFileName( const char* aEntry,
const STRING& aCategory, STRING* aPartName );
bool makePartName( STRING* aPartName, const char* aEntry, const STRING& aCategory );
/**
* Function readSExpression
@ -123,6 +125,12 @@ class DIR_LIB_SOURCE : public LIB_SOURCE
*/
void cacheOneDir( const STRING& aCategory ) throw( IO_ERROR );
/**
* Function makeFileName
* converts a part name into a filename and returns it.
*/
STRING makeFileName( const STRING& aPartName );
//protected:
public: