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* Don't allocate the buffer twice.

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This commit is contained in:
Eelco Dolstra 2006-09-22 11:28:23 +00:00
parent b43aeadbc9
commit d22d7565f3
1 changed files with 9 additions and 7 deletions
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16
src/libstore/references.cc
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@ -22,7 +22,7 @@ namespace nix {
static unsigned int refLength = 32; /* characters */ static unsigned int refLength = 32; /* characters */
static void search(const string & s, static void search(size_t len, const unsigned char * s,
StringSet & ids, StringSet & seen) StringSet & ids, StringSet & seen)
{ {
static bool initialised = false; static bool initialised = false;
@ -34,7 +34,7 @@ static void search(const string & s,
initialised = true; initialised = true;
} }
for (unsigned int i = 0; i + refLength <= s.size(); ) { for (unsigned int i = 0; i + refLength <= len; ) {
int j; int j;
bool match = true; bool match = true;
for (j = refLength - 1; j >= 0; --j) for (j = refLength - 1; j >= 0; --j)
@ -44,7 +44,7 @@ static void search(const string & s,
break; break;
} }
if (!match) continue; if (!match) continue;
string ref(s, i, refLength); string ref((const char *) s + i, refLength);
if (ids.find(ref) != ids.end()) { if (ids.find(ref) != ids.end()) {
debug(format("found reference to `%1%' at offset `%2%'") debug(format("found reference to `%1%' at offset `%2%'")
% ref % i); % ref % i);
@ -70,7 +70,7 @@ void checkPath(const string & path,
if (S_ISDIR(st.st_mode)) { if (S_ISDIR(st.st_mode)) {
Strings names = readDirectory(path); Strings names = readDirectory(path);
for (Strings::iterator i = names.begin(); i != names.end(); i++) { for (Strings::iterator i = names.begin(); i != names.end(); i++) {
search(*i, ids, seen); search(i->size(), (const unsigned char *) i->c_str(), ids, seen);
checkPath(path + "/" + *i, ids, seen); checkPath(path + "/" + *i, ids, seen);
} }
} }
@ -87,13 +87,15 @@ void checkPath(const string & path,
readFull(fd, buf, st.st_size); readFull(fd, buf, st.st_size);
search(string((char *) buf, st.st_size), ids, seen); search(st.st_size, buf, ids, seen);
delete[] buf; /* !!! autodelete */ delete[] buf; /* !!! autodelete */
} }
else if (S_ISLNK(st.st_mode)) else if (S_ISLNK(st.st_mode)) {
search(readLink(path), ids, seen); string target = readLink(path);
search(target.size(), (const unsigned char *) target.c_str(), ids, seen);
}
else throw Error(format("unknown file type: %1%") % path); else throw Error(format("unknown file type: %1%") % path);
} }