lyx_mirror/src/lyxlex.C
Jean-Marc Lasgouttes 1a3ed565d9 Use lyxlex to parse rgb.txt + small compilation fixes
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@1206 a592a061-630c-0410-9148-cb99ea01b6c8
2000-11-08 15:19:55 +00:00

266 lines
4.6 KiB
C

/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright 1996-2000 The LyX Team.
*
* Generalized simple lexical analizer.
* It can be used for simple syntax parsers, like lyxrc,
* texclass and others to come. [asierra30/03/96]
*
* ====================================================== */
#include <config.h>
#ifdef __GNUG__
#pragma implementation "lyxlex.h"
#endif
#include "lyxlex.h"
#include "lyxlex_pimpl.h"
#include "support/filetools.h"
#include "support/lstrings.h"
using std::ostream;
using std::istream;
using std::endl;
LyXLex::LyXLex(keyword_item * tab, int num)
: pimpl_(new Pimpl(tab, num))
{}
LyXLex::~LyXLex()
{
delete pimpl_;
}
bool LyXLex::IsOK() const
{
return pimpl_->is.good();
}
void LyXLex::setLineNo(int l)
{
pimpl_->lineno = l;
}
int LyXLex::GetLineNo() const
{
return pimpl_->lineno;
}
string const LyXLex::text() const
{
return &pimpl_->buff[0];
}
std::istream & LyXLex::getStream()
{
return pimpl_->is;
}
void LyXLex::pushTable(keyword_item * tab, int num)
{
pimpl_->pushTable(tab, num);
}
void LyXLex::popTable()
{
pimpl_->popTable();
}
void LyXLex::printTable(ostream & os)
{
pimpl_->printTable(os);
}
void LyXLex::printError(string const & message) const
{
pimpl_->printError(message);
}
bool LyXLex::setFile(string const & filename)
{
return pimpl_->setFile(filename);
}
void LyXLex::setStream(istream & i)
{
pimpl_->setStream(i);
}
void LyXLex::setCommentChar(char c)
{
pimpl_->setCommentChar(c);
}
int LyXLex::lex()
{
return pimpl_->lex();
}
int LyXLex::GetInteger() const
{
if (isStrInt(pimpl_->GetString()))
return strToInt(pimpl_->GetString());
else {
pimpl_->printError("Bad integer `$$Token'");
return -1;
}
}
float LyXLex::GetFloat() const
{
// replace comma with dot in case the file was written with
// the wrong locale (should be rare, but is easy enough to
// avoid).
string str = subst(pimpl_->GetString(), ",", ".");
if (isStrDbl(str))
return strToDbl(str);
else {
pimpl_->printError("Bad float `$$Token'");
return -1;
}
}
string const LyXLex::GetString() const
{
return pimpl_->GetString();
}
// I would prefer to give a tag number instead of an explicit token
// here, but it is not possible because Buffer::readLyXformat2 uses
// explicit tokens (JMarc)
string const LyXLex::getLongString(string const & endtoken)
{
string str, prefix;
bool firstline = true;
while (IsOK()) {
if (!EatLine())
// blank line in the file being read
continue;
string const token = frontStrip(strip(GetString()), " \t");
lyxerr[Debug::PARSER] << "LongString: `"
<< GetString() << '\'' << endl;
// We do a case independent comparison, like search_kw
// does.
if (compare_no_case(token, endtoken) != 0) {
string tmpstr = GetString();
if (firstline) {
unsigned int i = 0;
while(i < tmpstr.length()
&& tmpstr[i] == ' ') {
++i;
prefix += ' ';
}
firstline = false;
lyxerr[Debug::PARSER] << "Prefix = `" << prefix
<< '\'' << endl;
}
if (!prefix.empty()
&& prefixIs(tmpstr, prefix)) {
tmpstr.erase(0, prefix.length() - 1);
}
str += frontStrip(tmpstr, "\t") + '\n';
}
else // token == endtoken
break;
}
if (!IsOK())
printError("Long string not ended by `" + endtoken + '\'');
return str;
}
bool LyXLex::GetBool() const
{
if (compare(pimpl_->buff, "true") == 0)
return true;
else if (compare(pimpl_->buff, "false") != 0)
pimpl_->printError("Bad boolean `$$Token'. Use \"false\" or \"true\"");
return false;
}
bool LyXLex::EatLine()
{
return pimpl_->EatLine();
}
bool LyXLex::next(bool esc)
{
return pimpl_->next(esc);
}
bool LyXLex::nextToken()
{
return pimpl_->nextToken();
}
void LyXLex::pushToken(string const & pt)
{
pimpl_->pushToken(pt);
}
int LyXLex::FindToken(char const * str[])
{
int i = -1;
if (next()) {
if (compare(pimpl_->buff, "default")) {
for (i = 0; str[i][0] && compare(str[i], pimpl_->buff); ++i);
if (!str[i][0]) {
pimpl_->printError("Unknown argument `$$Token'");
i = -1;
}
}
} else
pimpl_->printError("file ended while scanning string token");
return i;
}
int LyXLex::CheckToken(char const * str[], int print_error)
{
int i = -1;
if (compare(pimpl_->buff, "default")) {
for (i = 0; str[i][0] && compare(str[i], pimpl_->buff); ++i);
if (!str[i][0]) {
if (print_error)
pimpl_->printError("Unknown argument `$$Token'");
i = -1;
}
}
return i;
}