void
TextOutputStream::writeNewline()
{
for (size_t i = 0; i < newline.size(); ++i)
{
indentAppend(newline[i]);
}
}
void TextOutput::wordWrapIndentAppend(const std::string& str) {
// TODO: keep track of the last space character we saw so we don't
// have to always search.
if ((option.wordWrap == Settings::WRAP_NONE) ||
(currentColumn + (int)str.size() <= option.numColumns)) {
// No word-wrapping is needed
// Add one character at a time.
// TODO: optimize for strings without newlines to add multiple
// characters.
for (uint32 i = 0; i < str.size(); ++i) {
indentAppend(str[i]);
}
return;
}
// Number of columns to wrap against
int cols = option.numColumns - indentSpaces;
// Copy forward until we exceed the column size,
// and then back up and try to insert newlines as needed.
for (uint32 i = 0; i < str.size(); ++i) {
indentAppend(str[i]);
if ((str[i] == '\r') && (i + 1 < str.size()) && (str[i + 1] == '\n')) {
// \r\n, we need to hit the \n to enter word wrapping.
++i;
indentAppend(str[i]);
}
if (currentColumn >= cols) {
debugAssertM(str[i] != '\n' && str[i] != '\r',
"Should never enter word-wrapping on a newline character");
// True when we're allowed to treat a space as a space.
bool unquotedSpace = option.allowWordWrapInsideDoubleQuotes || ! inDQuote;
// Cases:
//
// 1. Currently in a series of spaces that ends with a newline
// strip all spaces and let the newline
// flow through.
//
// 2. Currently in a series of spaces that does not end with a newline
// strip all spaces and replace them with single newline
//
// 3. Not in a series of spaces
// search backwards for a space, then execute case 2.
// Index of most recent space
uint32 lastSpace = data.size() - 1;
// How far back we had to look for a space
uint32 k = 0;
uint32 maxLookBackward = currentColumn - indentSpaces;
// Search backwards (from current character), looking for a space.
while ((k < maxLookBackward) &&
(lastSpace > 0) &&
(! ((data[lastSpace] == ' ') && unquotedSpace))) {
--lastSpace;
++k;
if ((data[lastSpace] == '\"') && !option.allowWordWrapInsideDoubleQuotes) {
unquotedSpace = ! unquotedSpace;
}
}
if (k == maxLookBackward) {
// We couldn't find a series of spaces
if (option.wordWrap == Settings::WRAP_ALWAYS) {
// Strip the last character we wrote, force a newline,
// and replace the last character;
data.pop();
writeNewline();
indentAppend(str[i]);
} else {
// Must be Settings::WRAP_WITHOUT_BREAKING
//
// Don't write the newline; we'll come back to
// the word wrap code after writing another character
}
} else {
// We found a series of spaces. If they continue
// to the new string, strip spaces off both. Otherwise
// strip spaces from data only and insert a newline.
// Find the start of the spaces. firstSpace is the index of the
// first non-space, looking backwards from lastSpace.
uint32 firstSpace = lastSpace;
while ((k < maxLookBackward) &&
(firstSpace > 0) &&
(data[firstSpace] == ' ')) {
--firstSpace;
++k;
}
if (k == maxLookBackward) {
++firstSpace;
}
if (lastSpace == (uint32)data.size() - 1) {
// Spaces continued up to the new string
data.resize(firstSpace + 1);
writeNewline();
// Delete the spaces from the new string
while ((i < str.size() - 1) && (str[i + 1] == ' ')) {
++i;
}
} else {
// Spaces were somewhere in the middle of the old string.
// replace them with a newline.
// Copy over the characters that should be saved
Array<char> temp;
for (uint32 j = lastSpace + 1; j < (uint32)data.size(); ++j) {
char c = data[j];
if (c == '\"') {
// Undo changes to quoting (they will be re-done
// when we paste these characters back on).
inDQuote = !inDQuote;
}
temp.append(c);
}
// Remove those characters and replace with a newline.
data.resize(firstSpace + 1);
writeNewline();
// Write them back
for (uint32 j = 0; j < (uint32)temp.size(); ++j) {
indentAppend(temp[j]);
}
// We are now free to continue adding from the
// new string, which may or may not begin with spaces.
} // if spaces included new string
} // if hit indent
} // if line exceeded
} // iterate over str
}
void TextOutput::writeNewline() {
for (uint32 i = 0; i < newline.size(); ++i) {
indentAppend(newline[i]);
}
}
