]> git.lyx.org Git - lyx.git/blobdiff - src/output_latex.cpp
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[lyx.git] / src / output_latex.cpp
index ed46c051753f97a90f28e29dd0a51ddba0c82887..370b7a0842e75d010b10d11e9c9358e9831e165b 100644 (file)
@@ -23,8 +23,8 @@
 #include "OutputParams.h"
 #include "Paragraph.h"
 #include "ParagraphParameters.h"
+#include "texstream.h"
 #include "TextClass.h"
-#include "TexRow.h"
 
 #include "insets/InsetBibitem.h"
 #include "insets/InsetArgument.h"
 #include "support/convert.h"
 #include "support/debug.h"
 #include "support/lstrings.h"
+#include "support/lyxalgo.h"
 #include "support/textutils.h"
 
 #include <QThreadStorage>
 
-#include <algorithm>
-#include <boost/next_prior.hpp>
 #include <list>
 
 using namespace std;
@@ -59,12 +58,13 @@ enum OpenEncoding {
 struct OutputState
 {
        OutputState() : open_encoding_(none), cjk_inherited_(0),
-                       prev_env_language_(0)
+                       prev_env_language_(0), open_polyglossia_lang_("")
        {
        }
-       int open_encoding_;
+       OpenEncoding open_encoding_;
        int cjk_inherited_;
        Language const * prev_env_language_;
+       string open_polyglossia_lang_;
 };
 
 
@@ -89,6 +89,20 @@ string const getPolyglossiaEnvName(Language const * lang)
 }
 
 
+string const getPolyglossiaBegin(string const & lang_begin_command,
+                                string const & lang, string const & opts)
+{
+       string result;
+       if (!lang.empty())
+               result = subst(lang_begin_command, "$$lang", lang);
+       string options = opts.empty() ?
+                   string() : "[" + opts + "]";
+       result = subst(result, "$$opts", options);
+
+       return result;
+}
+
+
 struct TeXEnvironmentData
 {
        bool cjk_nested;
@@ -116,7 +130,7 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
 
        ParagraphList const & paragraphs = text.paragraphs();
        ParagraphList::const_iterator const priorpit =
-               pit == paragraphs.begin() ? pit : boost::prior(pit);
+               pit == paragraphs.begin() ? pit : prev(pit, 1);
 
        OutputState * state = getOutputState();
        bool const use_prev_env_language = state->prev_env_language_ != 0
@@ -161,17 +175,13 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
                if ((lang_end_command.empty() ||
                    par_lang != doc_lang) &&
                    !par_lang.empty()) {
-                       os << from_ascii(subst(
-                               lang_begin_command,
-                               "$$lang",
-                               par_lang));
-                       if (use_polyglossia
-                           && !data.par_language->polyglossiaOpts().empty())
-                                       os << "["
-                                          << from_ascii(data.par_language->polyglossiaOpts())
-                                          << "]";
-                         // the '%' is necessary to prevent unwanted whitespace
-                       os << "%\n";
+                           string bc = use_polyglossia ?
+                                       getPolyglossiaBegin(lang_begin_command, par_lang,
+                                                           data.par_language->polyglossiaOpts())
+                                     : subst(lang_begin_command, "$$lang", par_lang);
+                           os << bc;
+                           // the '%' is necessary to prevent unwanted whitespace
+                           os << "%\n";
                }
        }
 
@@ -184,6 +194,8 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
        }
 
        if (style.isEnvironment()) {
+               if (par_lang != doc_lang)
+                       state->open_polyglossia_lang_ = par_lang;
                os << "\\begin{" << from_ascii(style.latexname()) << '}';
                if (!style.latexargs().empty()) {
                        OutputParams rp = runparams;
@@ -224,6 +236,7 @@ static void finishEnvironment(otexstream & os, OutputParams const & runparams,
                              TeXEnvironmentData const & data)
 {
        OutputState * state = getOutputState();
+       // BufferParams const & bparams = buf.params(); // FIXME: for speedup shortcut below, would require passing of "buf" as argument
        if (state->open_encoding_ == CJK && data.cjk_nested) {
                // We need to close the encoding even if it does not change
                // to do correct environment nesting
@@ -237,8 +250,7 @@ static void finishEnvironment(otexstream & os, OutputParams const & runparams,
                state->prev_env_language_ = data.par_language;
                if (runparams.encoding != data.prev_encoding) {
                        runparams.encoding = data.prev_encoding;
-                       if (!runparams.isFullUnicode())
-                               os << setEncoding(data.prev_encoding->iconvName());
+                       os << setEncoding(data.prev_encoding->iconvName());
                }
        }
 
@@ -247,8 +259,7 @@ static void finishEnvironment(otexstream & os, OutputParams const & runparams,
                state->prev_env_language_ = data.par_language;
                if (runparams.encoding != data.prev_encoding) {
                        runparams.encoding = data.prev_encoding;
-                       if (!runparams.isFullUnicode())
-                               os << setEncoding(data.prev_encoding->iconvName());
+                       os << setEncoding(data.prev_encoding->iconvName());
                }
        }
 
@@ -460,9 +471,9 @@ void latexArgInsets(ParagraphList const & pars, ParagraphList::const_iterator pi
        // get the first paragraph in sequence with this layout and depth
        pit_type offset = 0;
        while (true) {
-               if (boost::prior(pit, offset) == pars.begin())
+               if (lyx::prev(pit, offset) == pars.begin())
                        break;
-               ParagraphList::const_iterator priorpit = boost::prior(pit, offset + 1);
+               ParagraphList::const_iterator priorpit = lyx::prev(pit, offset + 1);
                if (priorpit->layout() == current_layout
                    && priorpit->params().depth() == current_depth)
                        ++offset;
@@ -470,7 +481,7 @@ void latexArgInsets(ParagraphList const & pars, ParagraphList::const_iterator pi
                        break;
        }
 
-       ParagraphList::const_iterator spit = boost::prior(pit, offset);
+       ParagraphList::const_iterator spit = lyx::prev(pit, offset);
 
        for (; spit != pars.end(); ++spit) {
                if (spit->layout() != current_layout || spit->params().depth() < current_depth)
@@ -554,7 +565,7 @@ void TeXOnePar(Buffer const & buf,
        Paragraph const & par = paragraphs.at(pit);
        // FIXME This check should not really be needed.
        // Perhaps we should issue an error if it is.
-       Layout const style = text.inset().forcePlainLayout() ?
+       Layout const style = text.inset().forcePlainLayout() ?
                bparams.documentClass().plainLayout() : par.layout();
 
        if (style.inpreamble)
@@ -626,6 +637,8 @@ void TeXOnePar(Buffer const & buf,
 
        // This paragraph's language
        Language const * const par_language = par.getParLanguage(bparams);
+       Language const * const nextpar_language = nextpar ?
+               nextpar->getParLanguage(bparams) : 0;
        // The document's language
        Language const * const doc_language = bparams.language;
        // The language that was in effect when the environment this paragraph is
@@ -659,22 +672,23 @@ void TeXOnePar(Buffer const & buf,
                getPolyglossiaEnvName(par_language): par_language->babel();
        string const prev_lang = use_polyglossia ?
                getPolyglossiaEnvName(prev_language) : prev_language->babel();
-       string const doc_lang = use_polyglossia ?
-               getPolyglossiaEnvName(doc_language) : doc_language->babel();
        string const outer_lang = use_polyglossia ?
                getPolyglossiaEnvName(outer_language) : outer_language->babel();
+       string const nextpar_lang = nextpar_language ? (use_polyglossia ?
+               getPolyglossiaEnvName(nextpar_language) :
+               nextpar_language->babel()) : string();
        string lang_begin_command = use_polyglossia ?
-               "\\begin{$$lang}" : lyxrc.language_command_begin;
+               "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
        string lang_end_command = use_polyglossia ?
                "\\end{$$lang}" : lyxrc.language_command_end;
        // the '%' is necessary to prevent unwanted whitespace
        string lang_command_termination = "%\n";
 
        // In some insets (such as Arguments), we cannot use \selectlanguage
-       bool const localswitch = !use_polyglossia
-               && text.inset().getLayout().forcelocalfontswitch();
+       bool const localswitch = text.inset().forceLocalFontSwitch();
        if (localswitch) {
-               lang_begin_command = lyxrc.language_command_local;
+               lang_begin_command = use_polyglossia ?
+                           "\\text$$lang$$opts{" : lyxrc.language_command_local;
                lang_end_command = "}";
                lang_command_termination.clear();
        }
@@ -694,6 +708,8 @@ void TeXOnePar(Buffer const & buf,
                                "$$lang",
                                prev_lang))
                           << lang_command_termination;
+                       if (prev_lang == state->open_polyglossia_lang_)
+                               state->open_polyglossia_lang_ = "";
                }
 
                // We need to open a new language if we couldn't close the previous
@@ -742,15 +758,10 @@ void TeXOnePar(Buffer const & buf,
                        // With CJK, the CJK tag has to be closed first (see below)
                        if (runparams.encoding->package() != Encoding::CJK
                            && !par_lang.empty()) {
-                               os << from_ascii(subst(
-                                       lang_begin_command,
-                                       "$$lang",
-                                       par_lang));
-                               if (use_polyglossia
-                                   && !par_language->polyglossiaOpts().empty())
-                                               os << "["
-                                                 << from_ascii(par_language->polyglossiaOpts())
-                                                 << "]";
+                               string bc = use_polyglossia ?
+                                         getPolyglossiaBegin(lang_begin_command, par_lang, par_language->polyglossiaOpts())
+                                         : subst(lang_begin_command, "$$lang", par_lang);
+                               os << bc;
                                os << lang_command_termination;
                        }
                }
@@ -760,6 +771,7 @@ void TeXOnePar(Buffer const & buf,
        // encoding, since this only affects the position of the outputted
        // \inputencoding command; the encoding switch will occur when necessary
        if (bparams.inputenc == "auto"
+               && !runparams.isFullUnicode() // Xe/LuaTeX use one document-wide encoding  (see also switchEncoding())
                && runparams.encoding->package() != Encoding::none) {
                // Look ahead for future encoding changes.
                // We try to output them at the beginning of the paragraph,
@@ -849,9 +861,9 @@ void TeXOnePar(Buffer const & buf,
        // calculates the space between the baselines according
        // to this font. (Matthias)
        //
-       // Is this really needed ? (Dekel)
-       // We do not need to use to change the font for the last paragraph
-       // or for a command.
+       // We must not change the font for the last paragraph
+       // of non-multipar insets, tabular cells or commands,
+       // since this produces unwanted whitespace.
 
        Font const font = par.empty()
                 ? par.getLayoutFont(bparams, outerfont)
@@ -860,7 +872,9 @@ void TeXOnePar(Buffer const & buf,
        bool const is_command = style.isCommand();
 
        if (style.resfont.size() != font.fontInfo().size()
-           && nextpar
+           && (nextpar || maintext
+               || (text.inset().paragraphs().size() > 1
+                   && text.inset().lyxCode() != CELL_CODE))
            && !is_command) {
                os << '{';
                os << "\\" << from_ascii(font.latexSize()) << " \\par}";
@@ -870,8 +884,7 @@ void TeXOnePar(Buffer const & buf,
                        latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
                if (runparams.encoding != prev_encoding) {
                        runparams.encoding = prev_encoding;
-                       if (!runparams.isFullUnicode())
-                               os << setEncoding(prev_encoding->iconvName());
+                       os << setEncoding(prev_encoding->iconvName());
                }
        }
 
@@ -926,13 +939,12 @@ void TeXOnePar(Buffer const & buf,
                && runparams.local_font != 0
                && runparams.local_font->isRightToLeft() != par_language->rightToLeft()
                // are we about to close the language?
-               &&((nextpar && par_language->babel() != (nextpar->getParLanguage(bparams))->babel())
-                  || (runparams.isLastPar && par_language->babel() != outer_language->babel()));
+               &&((nextpar && par_lang != nextpar_lang)
+                  || (runparams.isLastPar && par_lang != outer_lang));
 
        if (closing_rtl_ltr_environment
            || (runparams.isLastPar
-               && ((!use_polyglossia && par_language->babel() != outer_language->babel())
-                   || (use_polyglossia && par_language->polyglossia() != outer_language->polyglossia())))) {
+               && par_lang != outer_lang)) {
                // Since \selectlanguage write the language to the aux file,
                // we need to reset the language at the end of footnote or
                // float.
@@ -953,20 +965,24 @@ void TeXOnePar(Buffer const & buf,
                                        ? getPolyglossiaEnvName(current_language)
                                        : current_language->babel();
                                if (!current_lang.empty()) {
+                                       string bc = use_polyglossia ?
+                                                   getPolyglossiaBegin(lang_begin_command, current_lang,
+                                                                       current_language->polyglossiaOpts())
+                                                 : subst(lang_begin_command, "$$lang", current_lang);
+                                       os << bc;
+                                       pending_newline = !localswitch;
+                                       unskip_newline = !localswitch;
+                               }
+                       } else if (!par_lang.empty()) {
+                               // If we are in an environment, we have to close the "outer" language afterwards
+                               if (!style.isEnvironment() || state->open_polyglossia_lang_ != par_lang) {
                                        os << from_ascii(subst(
-                                               lang_begin_command,
+                                               lang_end_command,
                                                "$$lang",
-                                               current_lang));
+                                               par_lang));
                                        pending_newline = !localswitch;
                                        unskip_newline = !localswitch;
                                }
-                       } else if (!par_lang.empty()) {
-                               os << from_ascii(subst(
-                                       lang_end_command,
-                                       "$$lang",
-                                       par_lang));
-                               pending_newline = !localswitch;
-                               unskip_newline = !localswitch;
                        }
                }
        }
@@ -988,7 +1004,7 @@ void TeXOnePar(Buffer const & buf,
        // also if the next paragraph is a multilingual environment (because of nesting)
        if (nextpar
                && state->open_encoding_ == CJK
-               && (nextpar->getParLanguage(bparams)->encoding()->package() != Encoding::CJK
+               && (nextpar_language->encoding()->package() != Encoding::CJK
                   || (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
                // inbetween environments, CJK has to be closed later (nesting!)
                && (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
@@ -1026,14 +1042,14 @@ void TeXOnePar(Buffer const & buf,
        }
 
        // If this is the last paragraph, and a local_font was set upon entering
-       // the inset, and we're using "auto" or "default" encoding, the encoding
+       // the inset, and we're using "auto" or "default" encoding, and not
+       // compiling with XeTeX or LuaTeX, the encoding
        // should be set back to that local_font's encoding.
-       // However, do not change the encoding when a fully unicode aware backend
-       // such as XeTeX is used.
        if (runparams.isLastPar && runparams_in.local_font != 0
            && runparams_in.encoding != runparams_in.local_font->language()->encoding()
            && (bparams.inputenc == "auto" || bparams.inputenc == "default")
-           && (!runparams.isFullUnicode())) {
+               && !runparams.isFullUnicode()
+          ) {
                runparams_in.encoding = runparams_in.local_font->language()->encoding();
                os << setEncoding(runparams_in.encoding->iconvName());
        }
@@ -1071,6 +1087,7 @@ void TeXOnePar(Buffer const & buf,
                        DocumentClass const & tclass = bparams.documentClass();
                        if ((style == next_layout
                             && !style.parbreak_is_newline
+                            && !text.inset().getLayout().parbreakIsNewline()
                             && style.latextype != LATEX_ITEM_ENVIRONMENT
                             && style.latextype != LATEX_LIST_ENVIRONMENT
                             && style.align == par.getAlign()
@@ -1131,19 +1148,16 @@ void latexParagraphs(Buffer const & buf,
                ? getPolyglossiaEnvName(bparams.language)
                : bparams.language->babel();
        string const lang_begin_command = runparams.use_polyglossia ?
-               "\\begin{$$lang}" : lyxrc.language_command_begin;
+               "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
 
        if (maintext && !lyxrc.language_auto_begin &&
            !mainlang.empty()) {
                // FIXME UNICODE
-               os << from_utf8(subst(lang_begin_command,
-                                       "$$lang",
-                                       mainlang));
-               if (runparams.use_polyglossia
-                   && !bparams.language->polyglossiaOpts().empty())
-                       os << "["
-                           << from_ascii(bparams.language->polyglossiaOpts())
-                           << "]";
+               string bc = runparams.use_polyglossia ?
+                           getPolyglossiaBegin(lang_begin_command, mainlang,
+                                               bparams.language->polyglossiaOpts())
+                         : subst(lang_begin_command, "$$lang", mainlang);
+               os << bc;
                os << '\n';
        }
 
@@ -1232,7 +1246,7 @@ void latexParagraphs(Buffer const & buf,
        }
 
        // if "auto end" is switched off, explicitly close the language at the end
-       // but only if the last par is in a babel language
+       // but only if the last par is in a babel or polyglossia language
        string const lang_end_command = runparams.use_polyglossia ?
                "\\end{$$lang}" : lyxrc.language_command_end;
        if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
@@ -1241,6 +1255,8 @@ void latexParagraphs(Buffer const & buf,
                                        "$$lang",
                                        mainlang))
                        << '\n';
+               if (state->open_polyglossia_lang_ == mainlang)
+                       state->open_polyglossia_lang_ = "";
        }
 
        // If the last paragraph is an environment, we'll have to close
@@ -1249,6 +1265,14 @@ void latexParagraphs(Buffer const & buf,
                os << "\\end{CJK}\n";
                state->open_encoding_ = none;
        }
+       // Likewise for polyglossia
+       if (maintext && !is_child && state->open_polyglossia_lang_ != "") {
+               os << from_utf8(subst(lang_end_command,
+                                       "$$lang",
+                                       state->open_polyglossia_lang_))
+                  << '\n';
+               state->open_polyglossia_lang_ = "";
+       }
 
        // reset inherited encoding
        if (state->cjk_inherited_ > 0) {
@@ -1263,6 +1287,13 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
                   OutputParams const & runparams, Encoding const & newEnc,
                   bool force)
 {
+       // XeTeX/LuaTeX use only one encoding per document:
+       // * with useNonTeXFonts: "utf8plain",
+       // * with XeTeX and TeX fonts: "ascii" (inputenc fails),
+       // * with LuaTeX and TeX fonts: only one encoding accepted by luainputenc.
+       if (runparams.isFullUnicode())
+               return make_pair(false, 0);
+
        Encoding const & oldEnc = *runparams.encoding;
        bool moving_arg = runparams.moving_arg;
        // If we switch from/to CJK, we need to switch anyway, despite custom inputenc