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indent.I
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65 lines (57 loc) · 2 KB
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// Filename: indent.I
// Created by: drose (15Feb99)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University. All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license. You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
// Function: write_long_list
// Description: Writes a list of things to the indicated output
// stream, with a space separating each item. One or
// more lines will be written, and the lines will
// automatically be broken such that no line exceeds
// max_col columns if possible.
////////////////////////////////////////////////////////////////////
template<class InputIterator>
void
write_long_list(ostream &out, int indent_level,
InputIterator first, InputIterator last,
string first_prefix, string later_prefix,
int max_col) {
if (later_prefix.empty()) {
later_prefix = first_prefix;
}
if (first != last) {
// We have to use an intermediate strstream object so we can
// count the number of characters the item will have when it is
// output.
ostringstream item;
item << *first;
string str = item.str();
indent(out, indent_level) << first_prefix << str;
int col = indent_level + first_prefix.length() + str.length();
++first;
while (first != last) {
ostringstream item;
item << *first;
string str = item.str();
col += 1 + str.length();
if (col > max_col) {
out << "\n";
indent(out, indent_level) << later_prefix << str;
col = indent_level + later_prefix.length() + str.length();
} else {
out << " " << str;
}
++first;
}
out << "\n";
}
}