+namespace {
+ string parseOptions(string const & format, string & optkey,
+ string & ifpart, string & elsepart);
+
+ /// Calls parseOptions to deal with an embedded option, such as:
+ /// {%number%[[, no.~%number%]]}
+ /// which must appear at the start of format. ifelsepart gets the
+ /// whole of the option, and we return what's left after the option.
+ /// we return format if there is an error.
+ string parseEmbeddedOption(string const & format, string & ifelsepart)
+ {
+ LASSERT(format[0] == '{' && format[1] == '%', return format);
+ string optkey;
+ string ifpart;
+ string elsepart;
+ string const rest = parseOptions(format, optkey, ifpart, elsepart);
+ if (format == rest) { // parse error
+ LYXERR0("ERROR! Couldn't parse `" << format <<"'.");
+ return format;
+ }
+ LASSERT(rest.size() <= format.size(), /* */);
+ ifelsepart = format.substr(0, format.size() - rest.size());
+ return rest;
+ }
+
+
+ // Gets a "clause" from a format string, where the clause is
+ // delimited by '[[' and ']]'. Returns what is left after the
+ // clause is removed, and returns format if there is an error.
+ string getClause(string const & format, string & clause)
+ {
+ string fmt = format;
+ // remove '[['
+ fmt = fmt.substr(2);
+ // we'll remove characters from the front of fmt as we
+ // deal with them
+ while (fmt.size()) {
+ if (fmt[0] == ']' && fmt.size() > 1 && fmt[1] == ']') {
+ // that's the end
+ fmt = fmt.substr(2);
+ break;
+ }
+ // check for an embedded option
+ if (fmt[0] == '{' && fmt.size() > 1 && fmt[1] == '%') {
+ string part;
+ string const rest = parseEmbeddedOption(fmt, part);
+ if (fmt == rest) {
+ LYXERR0("ERROR! Couldn't parse `" << format <<"'.");
+ return format;
+ }
+ clause += part;
+ fmt = rest;
+ } else { // it's just a normal character
+ clause += fmt[0];
+ fmt = fmt.substr(1);
+ }
+ }
+ return fmt;
+ }
+
+
+ /// parse an options string, which must appear at the start of the
+ /// format parameter. puts the parsed bits in optkey, ifpart, and
+ /// elsepart and returns what's left after the option is removed.
+ /// if there's an error, it returns format itself.
+ string parseOptions(string const & format, string & optkey,
+ string & ifpart, string & elsepart)
+ {
+ LASSERT(format[0] == '{' && format[1] == '%', return format);
+ // strip '{%'
+ string fmt = format.substr(2);
+ size_t pos = fmt.find('%'); // end of key
+ if (pos == string::npos) {
+ LYXERR0("Error parsing `" << format <<"'. Can't find end of key.");
+ return format;
+ }
+ optkey = fmt.substr(0,pos);
+ fmt = fmt.substr(pos + 1);
+ // [[format]] should be next
+ if (fmt[0] != '[' || fmt[1] != '[') {
+ LYXERR0("Error parsing `" << format <<"'. Can't find '[[' after key.");
+ return format;
+ }
+
+ string curfmt = fmt;
+ fmt = getClause(curfmt, ifpart);
+ if (fmt == curfmt) {
+ LYXERR0("Error parsing `" << format <<"'. Couldn't get if clause.");
+ return format;
+ }
+
+ if (fmt[0] == '}') // we're done, no else clause
+ return fmt.substr(1);
+
+ // else part should follow
+ if (fmt[0] != '[' || fmt[1] != '[') {
+ LYXERR0("Error parsing `" << format <<"'. Can't find else clause.");
+ return format;
+ }
+
+ curfmt = fmt;
+ fmt = getClause(curfmt, elsepart);
+ // we should be done
+ if (fmt == curfmt || fmt[0] != '}') {
+ LYXERR0("Error parsing `" << format <<"'. Can't find end of option.");
+ return format;
+ }
+ return fmt.substr(1);
+}
+
+} // anon namespace
+
+
+docstring BibTeXInfo::expandFormat(string const & format,
+ BibTeXInfo const * const xref, bool richtext) const
+{
+ // return value
+ docstring ret;
+ string key;
+ bool scanning_key = false;
+ bool scanning_rich = false;
+
+ string fmt = format;
+ // we'll remove characters from the front of fmt as we
+ // deal with them
+ while (fmt.size()) {
+ char_type thischar = fmt[0];
+ if (thischar == '%') {
+ // beginning or end of key
+ if (scanning_key) {
+ // end of key
+ scanning_key = false;
+ // so we replace the key with its value, which may be empty
+ if (key == "pp_text")
+ ret += _(pp_text);
+ else if (key == "ed_text")
+ ret += _(ed_text);
+ else if(key == "edby_text")
+ ret += _(edby_text);
+ else {
+ docstring const val = getValueForKey(key, xref);
+ ret += val;
+ }
+ key.clear();
+ } else {
+ // beginning of key
+ scanning_key = true;
+ }
+ }
+ else if (thischar == '{') {
+ // beginning of option?
+ if (scanning_key) {
+ LYXERR0("ERROR: Found `{' when scanning key in `" << format << "'.");
+ return _("ERROR!");
+ }
+ if (fmt.size() > 1) {
+ if (fmt[1] == '%') {
+ // it is the beginning of an optional format
+ string optkey;
+ string ifpart;
+ string elsepart;
+ string const newfmt =
+ parseOptions(fmt, optkey, ifpart, elsepart);
+ if (newfmt == fmt) // parse error
+ return _("ERROR!");
+ fmt = newfmt;
+ docstring const val = getValueForKey(optkey, xref);
+ if (!val.empty())
+ ret += expandFormat(ifpart, xref, richtext);
+ else if (!elsepart.empty())
+ ret += expandFormat(elsepart, xref, richtext);
+ // fmt will have been shortened for us already
+ continue;
+ }
+ if (fmt[1] == '!') {
+ // beginning of rich text
+ scanning_rich = true;
+ fmt = fmt.substr(2);
+ continue;
+ }
+ }
+ // we are here if the '{' was at the end of the format. hmm.
+ ret += thischar;
+ }
+ else if (scanning_rich && thischar == '!'
+ && fmt.size() > 1 && fmt[1] == '}') {
+ // end of rich text
+ scanning_rich = false;
+ fmt = fmt.substr(2);
+ continue;
+ }
+ else if (scanning_key)
+ key += thischar;
+ else if (richtext || !scanning_rich)
+ ret += thischar;
+ // else the character is discarded, which will happen only if
+ // richtext == false and we are scanning rich text
+ fmt = fmt.substr(1);
+ } // for loop
+ if (scanning_key) {
+ LYXERR0("Never found end of key in `" << format << "'!");
+ return _("ERROR!");
+ }
+ if (scanning_rich) {
+ LYXERR0("Never found end of rich text in `" << format << "'!");
+ return _("ERROR!");
+ }
+ return ret;
+}
+
+
+namespace {
+
+// FIXME These would be better read from a file, so that they
+// could be customized.
+
+ static string articleFormat = "%author%, \"%title%\", {!<i>!}%journal%{!</i>!} {%volume%[[ %volume%{%number%[[, %number%]]}]]} (%year%){%pages%[[, %pp_text% %pages%]]}.{%note%[[ %note%]]}";
+
+ static string bookFormat = "{%author%[[%author%]][[%editor%, %ed_text%]]}, {!<i>!}%title%{!</i>!}{%volume%[[ vol. %volume%]][[{%number%[[no. %number%]]}]]}{%edition%[[%edition%]]} ({%address%[[%address%: ]]}%publisher%, %year%).{%note%[[ %note%]]}";
+
+ static string inSomething = "%author%, \"%title%\", in{%editor%[[ %editor%, %ed_text%,]]} {!<i>!}%booktitle%{!</i>!}{%volume%[[ vol. %volume%]][[{%number%[[no. %number%]]}]]}{%edition%[[%edition%]]} ({%address%[[%address%: ]]}%publisher%, %year%){%pages%[[, %pp_text% %pages%]]}.{%note%[[ %note%]]}";
+
+ static string thesis = "%author%, %title% ({%address%[[%address%: ]]}%school%, %year%).{%note%[[ %note%]]}";
+
+ static string defaultFormat = "{%author%[[%author%, ]][[{%editor%[[%editor%, %ed_text%, ]]}]]}\"%title%\"{%journal%[[, {!<i>!}%journal%{!</i>!}]][[{%publisher%[[, %publisher%]][[{%institution%[[, %institution%]]}]]}]]}{%year%[[ (%year%)]]}{%pages%[[, %pages%]]}.";
+
+}
+
+docstring const & BibTeXInfo::getInfo(BibTeXInfo const * const xref,
+ bool richtext) const