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* The new normaliser now passes the unit tests.

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This commit is contained in:
Eelco Dolstra 2003-07-15 21:24:05 +00:00
parent f5b6fa5256
commit 7b3f44e05b
7 changed files with 179 additions and 34 deletions
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44
src/references.cc
View file

@ -1,3 +1,5 @@
#include <map>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
@ -9,24 +11,24 @@
static void search(const string & s,
Strings & refs, Strings & seen)
Strings & ids, Strings & seen)
{
for (Strings::iterator i = refs.begin();
i != refs.end(); )
for (Strings::iterator i = ids.begin();
i != ids.end(); )
{
if (s.find(*i) == string::npos)
i++;
else {
debug(format("found reference to `%1%'") % *i);
seen.push_back(*i);
i = refs.erase(i);
i = ids.erase(i);
}
}
}
void checkPath(const string & path,
Strings & refs, Strings & seen)
Strings & ids, Strings & seen)
{
struct stat st;
if (lstat(path.c_str(), &st))
@ -39,8 +41,8 @@ void checkPath(const string & path,
while (errno = 0, dirent = readdir(dir)) {
string name = dirent->d_name;
if (name == "." || name == "..") continue;
search(name, refs, seen);
checkPath(path + "/" + name, refs, seen);
search(name, ids, seen);
checkPath(path + "/" + name, ids, seen);
}
closedir(dir); /* !!! close on exception */
@ -58,7 +60,7 @@ void checkPath(const string & path,
if (read(fd, buf, st.st_size) != st.st_size)
throw SysError(format("reading file %1%") % path);
search(string(buf, st.st_size), refs, seen);
search(string(buf, st.st_size), ids, seen);
delete buf; /* !!! autodelete */
@ -69,30 +71,40 @@ void checkPath(const string & path,
char buf[st.st_size];
if (readlink(path.c_str(), buf, st.st_size) != st.st_size)
throw SysError(format("reading symbolic link `%1%'") % path);
search(string(buf, st.st_size), refs, seen);
search(string(buf, st.st_size), ids, seen);
}
else throw Error(format("unknown file type: %1%") % path);
}
Strings filterReferences(const string & path, const Strings & _refs)
Strings filterReferences(const string & path, const Strings & paths)
{
Strings refs;
map<string, string> backMap;
Strings ids;
Strings seen;
/* For efficiency (and a higher hit rate), just search for the
hash part of the file name. (This assumes that all references
have the form `HASH-bla'). */
for (Strings::const_iterator i = _refs.begin();
i != _refs.end(); i++)
for (Strings::const_iterator i = paths.begin();
i != paths.end(); i++)
{
string s = string(baseNameOf(*i), 0, 32);
parseHash(s);
refs.push_back(s);
ids.push_back(s);
backMap[s] = *i;
}
checkPath(path, refs, seen);
checkPath(path, ids, seen);
return seen;
Strings found;
for (Strings::iterator i = seen.begin(); i != seen.end(); i++)
{
map<string, string>::iterator j;
if ((j = backMap.find(*i)) == backMap.end()) abort();
found.push_back(j->second);
}
return found;
}