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Convert LaTeX constructs to Unicode when reading BibTeX files.
Also, ignore other LaTeX commands. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@27975 a592a061-630c-0410-9148-cb99ea01b6c8
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@ -529,15 +529,16 @@ namespace {
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/// the variable strings.
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/// @return true if reading was successfull (all single parts were delimited
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/// correctly)
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bool readValue(docstring & val, ifdocstream & ifs, const VarMap & strings) {
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bool readValue(docstring & value, ifdocstream & ifs, const VarMap & strings) {
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char_type ch;
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val.clear();
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value.clear();
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if (!ifs)
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return false;
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docstring val;
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do {
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// skip whitespace
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do {
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@ -593,7 +594,7 @@ namespace {
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lastWasWhiteSpace = false;
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val += ' ';
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}
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val += ch;
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// update nesting level
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@ -654,6 +655,90 @@ namespace {
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ifs.putback(ch);
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// Ok, we now have the value. Now we are going to go
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// through it and replace e.g. \"a with its unicode value.
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// We'll also strip commands, like \emph, and the like, so
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// it will look nice in the UI.
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bool scanning_cmd = false;
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bool scanning_math = false;
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bool escaped = false; // used to catch \$, etc.
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while (val.size()) {
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char_type const ch = val[0];
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// if we're scanning math, we output everything until we
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// find an unescaped $, at which point we break out.
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if (scanning_math) {
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if (escaped)
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escaped = false;
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else if (ch == '\\')
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escaped = true;
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else if (ch == '$')
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scanning_math = false;
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value += ch;
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val = val.substr(1);
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continue;
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}
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// if we're scanning a command name, then we just
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// discard characters until we hit something that
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// isn't alpha.
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if (scanning_cmd) {
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if (isAlphaASCII(ch)) {
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val = val.substr(1);
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escaped = false;
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continue;
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}
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// so we're done with this command.
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// now we fall through and check this character.
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scanning_cmd = false;
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}
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// was the last character a \? If so, then this is something like: \\,
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// or \$, so we'll just output it. That's probably not always right...
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if (escaped) {
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value += ch;
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val = val.substr(1);
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escaped = false;
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continue;
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}
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if (ch == '$') {
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value += ch;
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val = val.substr(1);
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scanning_math = true;
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continue;
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}
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// we just ignore braces
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if (ch == '{' || ch == '}') {
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val = val.substr(1);
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continue;
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}
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// we're going to check things that look like commands, so if
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// this doesn't, just output it.
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if (ch != '\\') {
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value += ch;
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val = val.substr(1);
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continue;
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}
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// ok, could be a command of some sort
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// let's see if it corresponds to some unicode
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docstring rem;
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docstring const cnvtd = Encodings::fromLaTeXCommand(val, rem);
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if (!cnvtd.empty()) {
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// it did, so we'll take that bit and proceed with what's left
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value += cnvtd;
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val = rem;
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continue;
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}
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// it's a command of some sort
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scanning_cmd = true;
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escaped = true;
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val = val.substr(1);
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}
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return true;
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}
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}
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