bool suffixIs(string const & a, char c)
{
- if (a.empty())
+ if (a.empty())
return false;
return a[a.length() - 1] == c;
}
}
-docstring wrap(docstring const & str, int const ind, size_t const width)
+namespace {
+
+// this doesn't check whether str is empty, so do that first.
+vector<docstring> wrapToVec(docstring const & str, int const ind,
+ size_t const width)
{
docstring s = trim(str);
- if (s.empty())
- return docstring();
+ if (s.empty())
+ return vector<docstring>();
docstring indent;
if (ind < 0)
for (int j = 0; j < ind; ++j)
s = " " + s;
- docstring retval;
+ vector<docstring> retval;
while (s.size() > width) {
int i = width - 1;
// find the last space
for (; i >= 0; --i)
if (s[i] == ' ')
break;
- if (i < 0) {
+ if (i < 0) {
// no space found
s = s.substr(0, width - 3) + "...";
break;
}
- if (!retval.empty())
- retval += "\n";
- retval += s.substr(0, i);
+ retval.push_back(s.substr(0, i));
s = indent + s.substr(i);
}
- if (!s.empty()) {
- if (!retval.empty())
- retval += "\n";
- retval += s;
- }
+ if (!s.empty())
+ retval.push_back(s);
return retval;
}
+}
+
+
+docstring wrap(docstring const & str, int const ind, size_t const width)
+{
+ docstring s = trim(str);
+ if (s.empty())
+ return docstring();
+
+ vector<docstring> const svec = wrapToVec(str, ind, width);
+ return getStringFromVector(svec, from_ascii("\n"));
+}
+
+
+docstring wrapParas(docstring const & str, int const indent,
+ size_t const width, size_t const maxlines)
+{
+ if (str.empty())
+ return docstring();
+
+ vector<docstring> pars = getVectorFromString(str, from_ascii("\n"), true);
+ vector<docstring> retval;
+
+ vector<docstring>::iterator it = pars.begin();
+ vector<docstring>::iterator en = pars.end();
+ for (; it != en; ++it) {
+ vector<docstring> tmp = wrapToVec(*it, indent, width);
+ size_t const nlines = tmp.size();
+ if (nlines == 0)
+ continue;
+ size_t const curlines = retval.size();
+ if (maxlines > 0 && curlines + nlines >= maxlines) {
+ tmp.resize(maxlines - curlines - 1);
+ tmp.push_back(from_ascii("..."));
+ }
+ retval.insert(retval.end(), tmp.begin(), tmp.end());
+ if (maxlines > 0 && retval.size() >= maxlines)
+ break;
+ }
+ return getStringFromVector(retval, from_ascii("\n"));
+}
namespace {
#endif
}
+
+template<typename String> const String
+ getStringFromVector(vector<String> const & vec, String const & delim)
+{
+ String str;
+ typename vector<String>::const_iterator it = vec.begin();
+ typename vector<String>::const_iterator en = vec.end();
+ for (; it != en; ++it) {
+ String item = trim(*it);
+ if (item.empty())
+ continue;
+ if (!str.empty())
+ str += delim;
+ str += item;
+ }
+ return str;
+}
+
} // namespace anon
}
-// the same vice versa
string const getStringFromVector(vector<string> const & vec,
string const & delim)
{
- string str;
- vector<string>::const_iterator it = vec.begin();
- vector<string>::const_iterator en = vec.end();
- for (; it != en; ++it) {
- string item = trim(*it);
- if (item.empty())
- continue;
- if (!str.empty())
- str += delim;
- str += item;
- }
- return str;
+ return getStringFromVector<string>(vec, delim);
+}
+
+
+docstring const getStringFromVector(vector<docstring> const & vec,
+ docstring const & delim)
+{
+ return getStringFromVector<docstring>(vec, delim);
}