lyx_mirror/src/insets/insetcommandparams.C

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/**
* \file insetcommandparams.C
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Angus Leeming
*
* Full author contact details are available in file CREDITS
*/
#include <config.h>
#include "insetcommandparams.h"
#include "lyxlex.h"
#include "debug.h"
#include "support/LOstream.h"
using std::ostream;
using std::endl;
InsetCommandParams::InsetCommandParams()
{}
InsetCommandParams::InsetCommandParams(string const & n,
string const & c,
string const & o)
: cmdname(n), contents(c), options(o), preview_(false)
{}
void InsetCommandParams::scanCommand(string const & cmd)
{
string tcmdname, toptions, tcontents;
if (cmd.empty()) return;
enum { WS, CMDNAME, OPTION, CONTENT } state = WS;
// Used to handle things like \command[foo[bar]]{foo{bar}}
int nestdepth = 0;
for (string::size_type i = 0; i < cmd.length(); ++i) {
char c = cmd[i];
if ((state == CMDNAME && c == ' ') ||
(state == CMDNAME && c == '[') ||
(state == CMDNAME && c == '{')) {
state = WS;
}
if ((state == OPTION && c == ']') ||
(state == CONTENT && c == '}')) {
if (nestdepth == 0) {
state = WS;
} else {
--nestdepth;
}
}
if ((state == OPTION && c == '[') ||
(state == CONTENT && c == '{')) {
++nestdepth;
}
switch (state) {
case CMDNAME: tcmdname += c; break;
case OPTION: toptions += c; break;
case CONTENT: tcontents += c; break;
case WS:
if (c == '\\') {
state = CMDNAME;
} else if (c == '[') {
state = OPTION;
nestdepth = 0; // Just to be sure
} else if (c == '{') {
state = CONTENT;
nestdepth = 0; // Just to be sure
}
break;
}
}
// Don't mess with this.
if (!tcmdname.empty()) setCmdName(tcmdname);
if (!toptions.empty()) setOptions(toptions);
if (!tcontents.empty()) setContents(tcontents);
if (lyxerr.debugging(Debug::PARSER))
lyxerr << "Command <" << cmd
<< "> == <" << getCommand()
<< "> == <" << getCmdName()
<< '|' << getContents()
<< '|' << getOptions() << '>' << endl;
}
void InsetCommandParams::read(LyXLex & lex)
{
string token;
if (lex.eatLine()) {
token = lex.getString();
scanCommand(token);
} else {
lex.printError("InsetCommand: Parse error: `$$Token'");
}
while (lex.isOK()) {
lex.next();
token = lex.getString();
if (token == "\\end_inset")
break;
if (token == "preview") {
lex.next();
preview_ = lex.getBool();
}
}
if (token != "\\end_inset") {
lex.printError("Missing \\end_inset at this point. "
"Read: `$$Token'");
}
}
void InsetCommandParams::write(ostream & os) const
{
os << "LatexCommand " << getCommand() << "\n";
}
string const InsetCommandParams::getCommand() const
{
string s;
if (!getCmdName().empty()) s += '\\' + getCmdName();
if (!getOptions().empty()) s += '[' + getOptions() + ']';
s += '{' + getContents() + '}';
return s;
}
bool operator==(InsetCommandParams const & o1,
InsetCommandParams const & o2)
{
return o1.getCmdName() == o2.getCmdName()
&& o1.getContents() == o2.getContents()
&& o1.getOptions() == o2.getOptions()
&& o1.preview() == o2.preview();
}
bool operator!=(InsetCommandParams const & o1,
InsetCommandParams const & o2)
{
return !(o1 == o2);
}