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* Refactoring.

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This commit is contained in:
Eelco Dolstra 2004-06-20 13:37:51 +00:00
parent 23bb902d1f
commit 85ae781765
3 changed files with 52 additions and 41 deletions
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45
src/libutil/util.cc
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@ -446,3 +446,48 @@ void _interrupted()
throw Error("interrupted by the user");
}
}
string packStrings(const Strings & strings)
{
string d;
for (Strings::const_iterator i = strings.begin();
i != strings.end(); ++i)
{
unsigned int len = i->size();
d += len & 0xff;
d += (len >> 8) & 0xff;
d += (len >> 16) & 0xff;
d += (len >> 24) & 0xff;
d += *i;
}
return d;
}
Strings unpackStrings(const string & s)
{
Strings strings;
string::const_iterator i = s.begin();
while (i != s.end()) {
if (i + 4 > s.end())
throw Error(format("short db entry: `%1%'") % s);
unsigned int len;
len = (unsigned char) *i++;
len |= ((unsigned char) *i++) << 8;
len |= ((unsigned char) *i++) << 16;
len |= ((unsigned char) *i++) << 24;
if (i + len > s.end())
throw Error(format("short db entry: `%1%'") % s);
strings.push_back(string(i, i + len));
i += len;
}
return strings;
}