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preamble.cpp: full babel language support for tex2lyx

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git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@22046 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Uwe Stöhr 2007-12-09 17:42:05 +00:00
parent c8c44cc3a1
commit b3cf152185
1 changed files with 63 additions and 10 deletions
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73
src/tex2lyx/preamble.cpp
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@ -50,6 +50,12 @@ extern std::map<char, int> special_columns;
std::map<string, vector<string> > used_packages;
// needed to handle encodings with babel
bool one_language = true;
// to avoid that the babel options overwrite the documentclass options
bool documentclass_language;
namespace {
const char * const known_languages[] = { "afrikaans", "american", "arabic",
@ -132,17 +138,33 @@ void handle_opt(vector<string> & opts, char const * const * what, string & targe
for (; *what; ++what) {
it = find(opts.begin(), opts.end(), *what);
if (it != opts.end()) {
documentclass_language = true;
if (it >= position) {
target = *what;
position = it;
}
// remove found options from the list
opts.erase(it);
}
}
}
void delete_opt(vector<string> & opts, char const * const * what)
{
if (opts.empty())
return;
// remove found options from the list
// do this after handle_opt to avoid potential memory leaks and to be able
// to find in every case the last language option
vector<string>::iterator it;
for (; *what; ++what) {
it = find(opts.begin(), opts.end(), *what);
if (it != opts.end())
opts.erase(it);
}
}
/*!
* Split a package options string (keyval format) into a vector.
* Example input:
@ -256,14 +278,41 @@ void handle_package(string const & name, string const & opts)
else if (name == "amsmath" || name == "amssymb")
h_use_amsmath = "1";
else if (name == "babel")
; // ignore this
else if (name == "babel" && !opts.empty()) {
// check if more than one option was used - used later for inputenc
// in case inputenc is parsed before babel, set the encoding to auto
if (options.begin() != options.end() - 1) {
one_language = false;
h_inputencoding = "auto";
}
// only set the document language when there was not already one set
// via the documentclass options
// babel takes the the last language given in the documentclass options
// as document language. If there is no such language option, the last
// option of its \usepackage call is used.
if (documentclass_language == false) {
handle_opt(options, known_languages, h_language);
delete_opt(options, known_languages);
if (is_known(h_language, known_french_languages))
h_language = "french";
else if (is_known(h_language, known_german_languages))
h_language = "german";
else if (is_known(h_language, known_ngerman_languages))
h_language = "ngerman";
else if (is_known(h_language, known_russian_languages))
h_language = "russian";
else if (is_known(h_language, known_ukrainian_languages))
h_language = "ukrainian";
h_quotes_language = h_language;
}
}
else if (name == "fontenc")
; // ignore this
else if (name == "inputenc") {
// only set when there is not more than one inputenc option
// therefore check for the "," character
if (opts.find(",") == string::npos)
// also only set when there is not more then one babel language option
if (opts.find(",") == string::npos && one_language == true)
h_inputencoding = opts;
options.clear();
} else if (name == "makeidx")
@ -484,7 +533,16 @@ TextClass const parse_preamble(Parser & p, ostream & os, string const & forcecla
else if (t.cs() == "documentclass") {
vector<string> opts = split_options(p.getArg('[', ']'));
handle_opt(opts, known_fontsizes, h_paperfontsize);
delete_opt(opts, known_fontsizes);
// delete "pt" at the end
string::size_type i = h_paperfontsize.find("pt");
if (i != string::npos)
h_paperfontsize.erase(i);
// to avoid that the babel options overwrite the documentclass options
documentclass_language = false;
handle_opt(opts, known_languages, h_language);
delete_opt(opts, known_languages);
if (is_known(h_language, known_french_languages))
h_language = "french";
else if (is_known(h_language, known_german_languages))
@ -495,11 +553,6 @@ TextClass const parse_preamble(Parser & p, ostream & os, string const & forcecla
h_language = "russian";
else if (is_known(h_language, known_ukrainian_languages))
h_language = "ukrainian";
handle_opt(opts, known_fontsizes, h_paperfontsize);
// delete "pt" at the end
string::size_type i = h_paperfontsize.find("pt");
if (i != string::npos)
h_paperfontsize.erase(i);
h_quotes_language = h_language;
h_options = join(opts, ",");
h_textclass = p.getArg('{', '}');