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Replace now works when the source is inside the string

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This commit is contained in:
Krystian Stasiowski
2019-10-19 17:09:39 -04:00
parent 906c86acf2
commit 885aa38d3e
1 changed files with 28 additions and 7 deletions
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35
include/boost/fixed_string/impl/fixed_string.hpp
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@ -320,13 +320,13 @@ insert(
const bool inside = s <= &s_[size()] && s >= &s_[0];
if (!inside || (inside && (&s[count - 1] < &s_[index])))
{
Traits::move(&s_[index + count], &s_[index], size() - index);
Traits::move(&s_[index + count], &s_[index], size() - index + 1);
Traits::copy(&s_[index], s, count);
}
else
{
const size_type offset = s - &s_[0];
Traits::move(&s_[index + count], &s_[index], size() - index);
Traits::move(&s_[index + count], &s_[index], size() - index + 1);
if (offset < index)
{
const size_type diff = index - offset;
@ -335,11 +335,10 @@ insert(
}
else
{
Traits::copy(&s_[index], &s_[index + count + offset], count);
Traits::copy(&s_[index], &s_[offset + count], count);
}
}
n_ += count;
term();
return *this;
}
@ -602,9 +601,31 @@ replace(
"pos > size()"});
if ((size() - n1 + n2) > max_size())
BOOST_THROW_EXCEPTION(std::length_error{
"replaced string exceeds max_size()"});
Traits::move(&s_[pos + n2], &s_[pos + n1], size() - pos - n1 + 1);
Traits::copy(&s_[pos], s, n2);
"size() - n1 + n2 > max_size()"});
const bool inside = s <= &s_[size()] && s >= &s_[0];
if (inside && (s - &s_[0]) == pos && n1 == n2)
return *this;
if (!inside || (inside && (&s[n2 - 1] < &s_[pos])))
{
Traits::move(&s_[pos + n2], &s_[pos + n1], size() - pos - n1 + 1);
Traits::copy(&s_[pos], s, n2);
}
else
{
const size_type offset = s - &s_[0];
if (n2 >= n1)
{
Traits::move(&s_[pos + n2], &s_[pos + n1], size() - pos - n1 + 1);
const size_type diff = ((pos + n1) - offset) > n2 ? n2 : ((pos + n1) - offset);
Traits::move(&s_[pos], &s_[offset], diff);
Traits::move(&s_[pos + diff], &s_[pos + n2], n2 - diff);
}
else
{
Traits::move(&s_[pos], &s_[offset], n2);
Traits::copy(&s_[pos + n2], &s_[pos + n1], size() - pos - n1 + 1);
}
}
n_ += (n2 - n1);
return *this;
}