lyx_mirror/src/chset.C

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#include <config.h>
#ifdef __GNUG__
#pragma implementation
#endif
#include <fstream>
#include "chset.h"
#include "support/filetools.h"
#include "support/LRegex.h"
#include "support/LSubstring.h"
#include "support/lyxlib.h"
#include "debug.h"
using std::ifstream;
using std::getline;
using std::pair;
using std::make_pair;
using std::endl;
bool CharacterSet::loadFile(string const & fname)
{
map_.clear();
name_.erase();
if (fname.empty() || fname == "ascii")
return true; // ascii 7-bit
// open definition file
lyxerr[Debug::KBMAP]
<< "Reading character set file " << fname << ".cdef" << endl;
string filename = LibFileSearch("kbd", fname, "cdef");
ifstream ifs(filename.c_str());
if (!ifs) {
lyxerr << "Unable to open character set file" << endl;
return true; // no definition, use 7-bit ascii
}
name_ = fname;
string str;
int n;
string line;
// Ok, I'll be the first to admit that this is probably not
// the fastest way to parse the cdef files, but I though it
// was a bit neat. Anyway it is wrong to use the lyxlex parse
// without the use of a keyword table.
LRegex reg("^([12][0-9][0-9])[ \t]+\"([^ ]+)\".*");
while(getline(ifs, line)) {
if (reg.exact_match(line)) {
LRegex::SubMatches const & sub = reg.exec(line);
n = lyx::atoi(line.substr(sub[1].first,
sub[1].second));
str = LSubstring(line, sub[2].first, sub[2].second);
if (lyxerr.debugging(Debug::KBMAP))
lyxerr << "Chardef: " << n
<< " to [" << str << "]" << endl;
map_[str] = n;
}
}
lyxerr[Debug::KBMAP] << "End of parsing of .cdef file." << endl;
return false;
}
pair<bool, int> const CharacterSet::encodeString(string const & str) const
{
lyxerr[Debug::KBMAP] << "Checking if we know [" << str << "]" << endl;
bool ret = false;
int val = 0;
Cdef::const_iterator cit = map_.find(str);
if (cit != map_.end()) {
ret = true;
val = (*cit).second;
}
lyxerr[Debug::KBMAP] << " "
<< (ret ? "yes we" : "no we don't")
<< " know [" << str << "]" << endl;
return make_pair(ret, val);
}
string const & CharacterSet::getName() const
{
return name_;
}