#include "Encoding.h"
#include "Parser.h"
-#include "support/foreach.h"
#include "support/lstrings.h"
#include "support/textutils.h"
return c;
}
-}
+} // namespace
//
// Token
#endif
+//
+// Wrapper
+//
+
+void iparserdocstream::setEncoding(std::string const & e)
+{
+ is_ << lyx::setEncoding(e);
+}
+
+
+void iparserdocstream::putback(char_type c)
+{
+ s_ = c + s_;
+}
+
+
+void iparserdocstream::putback(docstring s)
+{
+ s_ = s + s_;
+}
+
+
+iparserdocstream & iparserdocstream::get(char_type &c)
+{
+ if (s_.empty())
+ is_.get(c);
+ else {
+ //cerr << "unparsed: " << to_utf8(s_) <<endl;
+ c = s_[0];
+ s_.erase(0,1);
+ }
+ return *this;
+}
+
+
//
// Parser
//
-Parser::Parser(idocstream & is)
- : lineno_(0), pos_(0), iss_(0), is_(is), encoding_iconv_("UTF-8"),
- theCatcodesType_(NORMAL_CATCODES), curr_cat_(UNDECIDED_CATCODES)
+Parser::Parser(idocstream & is, std::string const & fixedenc)
+ : lineno_(0), pos_(0), iss_(0), is_(is),
+ encoding_iconv_(fixedenc.empty() ? "UTF-8" : fixedenc),
+ theCatcodesType_(NORMAL_CATCODES), curr_cat_(UNDECIDED_CATCODES),
+ fixed_enc_(!fixedenc.empty())
{
+ if (fixed_enc_)
+ is_.setEncoding(fixedenc);
+ catInit();
}
: lineno_(0), pos_(0),
iss_(new idocstringstream(from_utf8(s))), is_(*iss_),
encoding_iconv_("UTF-8"),
- theCatcodesType_(NORMAL_CATCODES), curr_cat_(UNDECIDED_CATCODES)
+ theCatcodesType_(NORMAL_CATCODES), curr_cat_(UNDECIDED_CATCODES),
+ // An idocstringstream can not change the encoding
+ fixed_enc_(true)
{
+ catInit();
}
void Parser::deparse()
{
+ string s;
for(size_type i = pos_ ; i < tokens_.size() ; ++i) {
- docstring const s = from_utf8(tokens_[i].asInput());
- //cerr << "deparsing [" << to_utf8(s) << "]" <<endl;
- foreach(char_type c, s)
- is_.putback(c);
+ s += tokens_[i].asInput();
}
+ is_.putback(from_utf8(s));
tokens_.erase(tokens_.begin() + pos_, tokens_.end());
// make sure that next token is read
tokenize_one();
}
-void Parser::setEncoding(std::string const & e, int const & p)
+bool Parser::setEncoding(std::string const & e, int const & p)
{
// We may (and need to) use unsafe encodings here: Since the text is
// converted to unicode while reading from is_, we never see text in
Encoding const * const enc = encodings.fromLaTeXName(e, p, true);
if (!enc) {
cerr << "Unknown encoding " << e << ". Ignoring." << std::endl;
- return;
+ return false;
}
- setEncoding(enc->iconvName());
+ return setEncoding(enc->iconvName());
}
}
-void Parser::setEncoding(std::string const & e)
+bool Parser::setEncoding(std::string const & e)
{
//cerr << "setting encoding to " << e << std::endl;
- is_.docstream() << lyx::setEncoding(e);
encoding_iconv_ = e;
+ // If the encoding is fixed, we must not change the stream encoding
+ // (because the whole input uses that encoding, e.g. if it comes from
+ // the clipboard). We still need to track the original encoding in
+ // encoding_iconv_, so that the generated output is correct.
+ if (!fixed_enc_)
+ is_.setEncoding(e);
+ return true;
}
Token const Parser::next_token()
{
static const Token dummy;
- return good() ? tokens_[pos_] : dummy;
+ if (!good())
+ return dummy;
+ if (pos_ >= tokens_.size())
+ tokenize_one();
+ return pos_ < tokens_.size() ? tokens_[pos_] : dummy;
}
Token const Parser::next_next_token()
{
static const Token dummy;
- // If good() has not been called after the last get_token() we need
- // to tokenize two more tokens.
- if (pos_ + 1 >= tokens_.size()) {
+ if (!good())
+ return dummy;
+ // If tokenize_one() has not been called after the last get_token() we
+ // need to tokenize two more tokens.
+ if (pos_ >= tokens_.size())
tokenize_one();
+ if (pos_ + 1 >= tokens_.size())
tokenize_one();
- }
return pos_ + 1 < tokens_.size() ? tokens_[pos_ + 1] : dummy;
}
Token const Parser::get_token()
{
static const Token dummy;
- // if (good())
- // cerr << "looking at token " << tokens_[pos_]
- // << " pos: " << pos_ << '\n';
- return good() ? tokens_[pos_++] : dummy;
+ if (!good())
+ return dummy;
+ if (pos_ >= tokens_.size()) {
+ tokenize_one();
+ if (pos_ >= tokens_.size())
+ return dummy;
+ }
+ // cerr << "looking at token " << tokens_[pos_]
+ // << " pos: " << pos_ << '\n';
+ return tokens_[pos_++];
}
{
pos_ = positions_.back();
positions_.pop_back();
+ deparse();
}
-bool Parser::good()
+void Parser::dropPosition()
{
- if (pos_ < tokens_.size())
- return true;
- tokenize_one();
- return pos_ < tokens_.size();
+ positions_.pop_back();
}
-char Parser::getChar()
+bool Parser::good()
{
- if (!good())
- error("The input stream is not well...");
- return get_token().character();
+ if (pos_ < tokens_.size())
+ return true;
+ if (!is_.good())
+ return false;
+ return is_.peek() != idocstream::traits_type::eof();
}
-bool Parser::hasOpt()
+bool Parser::hasOpt(string const l)
{
// An optional argument can occur in any of the following forms:
// - \foo[bar]
putback();
break;
}
- bool const retval = (next_token().asInput() == "[");
+ bool const retval = (next_token().asInput() == l);
pos_ = oldpos;
return retval;
}
if (! good())
return make_pair(false, string());
+ int group_level = 0;
string result;
Token t = get_token();
putback();
return make_pair(false, string());
} else {
- for (t = get_token(); good(); t = get_token()) {
+ while (good()) {
+ t = get_token();
+ // honor grouping
+ if (left != '{' && t.cat() == catBegin) {
+ ++group_level;
+ continue;
+ }
+ if (left != '{' && t.cat() == catEnd) {
+ --group_level;
+ continue;
+ }
// Ignore comments
if (t.cat() == catComment) {
if (!t.cs().empty())
continue;
}
if (allow_escaping) {
- if (t.cat() != catEscape && t.character() == right)
+ if (t.cat() != catEscape && t.character() == right
+ && group_level == 0)
break;
} else {
if (t.character() == right) {
if (t.cat() == catEscape)
result += '\\';
- break;
+ if (group_level == 0)
+ break;
}
}
result += t.asInput();
}
-string Parser::getFullOpt(bool keepws)
+string Parser::getFullOpt(bool keepws, char left, char right)
{
- Arg arg = getFullArg('[', ']');
+ Arg arg = getFullArg(left, right);
if (arg.first)
- return '[' + arg.second + ']';
+ return left + arg.second + right;
if (keepws)
unskip_spaces(true);
return string();
}
+bool Parser::hasListPreamble(string const itemcmd)
+{
+ // remember current position
+ unsigned int oldpos = pos_;
+ // jump over arguments
+ if (hasOpt())
+ getOpt();
+ if (hasOpt("{"))
+ getArg('{', '}');
+ // and swallow spaces and comments
+ skip_spaces(true);
+ // we have a list preamble if the next thing
+ // that follows is not the \item command
+ bool res = next_token().cs() != itemcmd;
+ // back to orig position
+ pos_ = oldpos;
+ return res;
+}
+
+
string const Parser::ertEnvironment(string const & name)
{
if (!good())
}
-string const Parser::verbatimStuff(string const & end_string)
+string const Parser::getCommandLatexParam()
{
if (!good())
return string();
+ string res;
+ size_t offset = 0;
+ while (true) {
+ if (pos_ + offset >= tokens_.size())
+ tokenize_one();
+ if (pos_ + offset >= tokens_.size())
+ break;
+ Token t = tokens_[pos_ + offset];
+ if (t.cat() == catBegin)
+ break;
+ res += t.asInput();
+ ++offset;
+ }
+ return res;
+}
+
+Parser::Arg Parser::verbatimStuff(string const & end_string, bool const allow_linebreak)
+{
+ if (!good())
+ return Arg(false, string());
+
+ pushPosition();
ostringstream oss;
size_t match_index = 0;
setCatcodes(VERBATIM_CATCODES);
match_index += t.asInput().length();
if (match_index >= end_string.length())
break;
- } else if (match_index) {
- oss << end_string.substr(0, match_index) << t.asInput();
- match_index = 0;
- } else
- oss << t.asInput();
+ } else {
+ if (!allow_linebreak && t.asInput() == "\n") {
+ cerr << "unexpected end of input" << endl;
+ popPosition();
+ setCatcodes(NORMAL_CATCODES);
+ return Arg(false, string());
+ }
+ if (match_index) {
+ oss << end_string.substr(0, match_index)
+ << t.asInput();
+ match_index = 0;
+ } else
+ oss << t.asInput();
+ }
}
- setCatcodes(NORMAL_CATCODES);
- if (!good())
+
+ if (!good()) {
cerr << "unexpected end of input" << endl;
- return oss.str();
+ popPosition();
+ setCatcodes(NORMAL_CATCODES);
+ return Arg(false, string());
+ }
+ setCatcodes(NORMAL_CATCODES);
+ dropPosition();
+ return Arg(true, oss.str());
}
string const Parser::verbatimEnvironment(string const & name)
{
- string s = verbatimStuff("\\end{" + name + "}");
+ //FIXME: do something if endstring is not found
+ string s = verbatimStuff("\\end{" + name + "}").second;
// ignore one newline at beginning or end of string
if (prefixIs(s, "\n"))
s.erase(0,1);
putback();
res += '{' + verbatim_item() + '}';
} else
- res += t.cs();
+ res += t.asInput();
}
}
return res;
if (next_token().cat() == catBegin) {
Token t = get_token(); // skip brace
string res;
- for (Token t = get_token(); t.cat() != catEnd && good(); t = get_token()) {
+ for (t = get_token(); t.cat() != catEnd && good(); t = get_token()) {
if (t.cat() == catBegin) {
putback();
res += '{' + verbatim_item() + '}';
projects / lyx.git / blobdiff