improved table handling

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@6825 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
André Pönitz 2003-04-16 12:52:49 +00:00
parent 68f7a50799
commit 18b2115471
3 changed files with 343 additions and 96 deletions

View File

@ -30,6 +30,7 @@ using std::ifstream;
using std::istream;
using std::istringstream;
using std::map;
using std::swap;
using std::ostream;
using std::ostringstream;
using std::stack;
@ -39,15 +40,82 @@ using std::vector;
namespace {
struct ColInfo
{
ColInfo() : rightline(false) {}
string align; // column alignment
string width; // column width
bool rightline; // a line on the right?
};
struct RowInfo
{
RowInfo() : topline(false), bottomline(false) {}
bool topline; // horizontal line above
bool bottomline; // horizontal line below
};
struct CellInfo
{
CellInfo()
: multi(0), leftline(false), rightline(false),
topline(false), bottomline(false)
{}
string content; // cell content
int multi; // multicolumn flag
string align; // cell alignment
bool leftline; // do we have a line on the left?
bool rightline; // do we have a line on the right?
bool topline; // do we have a line above?
bool bottomline; // do we have a line below?
};
void parse_preamble(Parser & p, ostream & os);
void parse(Parser & p, ostream & os, unsigned flags, const mode_type mode,
const bool outer);
string parse(Parser & p, unsigned flags, const mode_type mode,
const bool outer)
{
ostringstream os;
parse(p, os, flags, mode, outer);
return os.str();
}
int string2int(string const & s, int deflt = 0)
{
istringstream is(s);
int i = deflt;
is >> i;
return i;
}
string read_hlines(Parser & p)
{
ostringstream os;
p.skipSpaces();
while (p.good()) {
if (p.nextToken().cs() == "hline") {
p.getToken();
os << "\\hline";
} else if (p.nextToken().cs() == "cline") {
p.getToken();
os << "\\cline{" << p.verbatimItem() << "}";
} else
break;
p.skipSpaces();
};
//cerr << "read_hlines(), read: '" << os.str() << "'\n";
//cerr << "read_hlines(), next token: " << p.nextToken() << "\n";
return os.str();
}
char const OPEN = '<';
char const CLOSE = '>';
/* rather brutish way to code table structure in a string:
@ -60,13 +128,12 @@ char const CLOSE = '>';
gets "translated" to:
1 TAB 2 TAB 3 LINE
HLINE 2 MULT c MULT 4 TAB 5 LINE
\hline HLINE TAB 5 LINE
5 TAB 7 LINE
*/
char const TAB = '\001';
char const LINE = '\002';
char const MULT = '\003';
char const HLINE = '\004';
const char * known_languages[] = { "austrian", "babel", "bahasa", "basque",
@ -91,7 +158,7 @@ char const * known_math_envs[] = { "equation", "equation*",
"eqnarray", "eqnarray*", "align", "align*", 0};
char const * known_latex_commands[] = { "ref", "cite", "label", "index",
"printindex", 0 };
"printindex", "pageref", 0 };
// LaTeX names for quotes
char const * known_quotes[] = { "glqq", "grqq", "quotedblbase",
@ -162,10 +229,12 @@ string const trim(string const & a, char const * p = " \t\n\r")
void split(string const & s, vector<string> & result, char delim = ',')
{
//cerr << "split 1\n";
istringstream is(s);
string t;
while (getline(is, t, delim))
result.push_back(t);
//cerr << "split 2\n";
}
@ -319,101 +388,253 @@ void handle_package(string const & name, string const & options)
}
vector<string> extract_col_align(string const & s)
bool handle_colalign(Parser & p, vector<ColInfo> & colinfo)
{
vector<string> res;
string t;
for (size_t i = 0; i < s.size(); ++i) {
switch (s[i]) {
case 'c': res.push_back("center"); break;
case 'l': res.push_back("left"); break;
case 'r': res.push_back("right"); break;
case '|': cerr << "ignoring vertical separator\n"; break;
default : cerr << "ignoring special separator '" << s[i] << "'\n"; break;
//default: break;
}
if (p.getToken().cat() != catBegin)
cerr << "wrong syntax for table column alignment. '{' expected\n";
string nextalign = "block";
bool leftline = false;
for (Token t = p.getToken(); p.good() && t.cat() != catEnd; t = p.getToken()){
#ifdef FILEDEBUG
cerr << "t: " << t << " c: '" << t.character() << "'\n";
#endif
switch (t.character()) {
case 'c':
colinfo.push_back(ColInfo());
colinfo.back().align = "center";
break;
case 'l':
colinfo.push_back(ColInfo());
colinfo.back().align = "left";
break;
case 'r':
colinfo.push_back(ColInfo());
colinfo.back().align = "right";
break;
case 'p':
colinfo.push_back(ColInfo());
colinfo.back().align = nextalign;
colinfo.back().width = p.verbatimItem();
nextalign = "block";
break;
case '|':
if (colinfo.empty())
leftline = true;
else
colinfo.back().rightline = true;
break;
case '>': {
string s = p.verbatimItem();
if (s == "\\raggedleft ")
nextalign = "left";
else if (s == "\\raggedright ")
nextalign = "right";
else
cerr << "unknown '>' column '" << s << "'\n";
break;
}
default:
cerr << "ignoring special separator '" << t << "'\n";
break;
}
}
return res;
return leftline;
}
void handle_tabular(Parser & p, ostream & os, mode_type mode)
{
begin_inset(os, "Tabular \n");
string posopts = p.getOpt();
if (posopts.size())
cerr << "vertical tabular positioning '" << posopts << "' ignored\n";
string colopts = p.verbatimItem();
vector<string> colalign = extract_col_align(colopts);
ostringstream ss;
parse(p, ss, FLAG_END, mode, false);
vector<ColInfo> colinfo;
// handle column formatting
bool leftline = handle_colalign(p, colinfo);
// handle initial hlines
// first scan of cells
// use table mode to keep it minimal-invasive
// not exactly what's TeX doing...
vector<string> lines;
ostringstream ss;
ss << read_hlines(p) << HLINE; // handle initial hlines
parse(p, ss, FLAG_END, TABLE_MODE, false);
split(ss.str(), lines, LINE);
const size_t cols = colalign.size();
const size_t rows = lines.size();
os << "<lyxtabular version=\"3\" rows=\"" << rows
<< "\" columns=\"" << cols << "\">\n"
<< "<features>\n";
for (size_t c = 0; c < cols; ++c)
os << "<column alignment=\"" << colalign[c] << "\""
<< " valignment=\"top\""
<< " width=\"0pt\""
<< ">\n";
for (size_t r = 0; r < rows; ++r) {
vector< vector<CellInfo> > cellinfo(lines.size());
vector<RowInfo> rowinfo(lines.size());
// split into rows
for (size_t row = 0; row < rowinfo.size(); ++row) {
// init row
vector<CellInfo> & cellinfos = cellinfo[row];
cellinfos.resize(colinfo.size());
// split row
vector<string> dummy;
// handle hlines
split(lines[r], dummy, HLINE);
int hlines = dummy.size() - 1;
lines[r] = join(dummy, "");
// handle almost empty line
if (lines[r].empty() && hlines && r > 0) {
cerr << "last hline lost\n";
continue;
//cerr << "\n########### LINE: " << lines[row] << "########\n";
split(lines[row], dummy, HLINE);
// handle horizontal line fragments
if (dummy.size() != 3) {
//cerr << "unexpected dummy size: " << dummy.size()
// << " content: " << lines[row] << "\n";
dummy.resize(3);
}
// handle cells
vector<string> cells;
split(lines[r], cells, TAB);
while (cells.size() < cols)
cells.push_back(string());
os << "<row";
if (hlines)
os << " topline=\"true\"";
os << ">\n";
for (size_t c = 0; c < cols; ++c) {
os << "<cell";
string alignment = "center";
vector<string> parts;
split(cells[c], parts, MULT);
if (parts.size() > 2) {
os << " multicolumn=\"" << parts[0] << "\"";
alignment = parts[1];
lines[row] = dummy[1];
//cerr << "line: " << row << " above 0: " << dummy[0] << "\n";
//cerr << "line: " << row << " below 2: " << dummy[2] << "\n";
//cerr << "line: " << row << " cells 1: " << dummy[1] << "\n";
for (int i = 0; i <= 2; i += 2) {
//cerr << " reading from line string '" << dummy[i] << "'\n";
Parser p1(dummy[i]);
while (p1.good()) {
Token t = p1.getToken();
//cerr << "read token: " << t << "\n";
if (t.cs() == "hline") {
if (i == 0) {
rowinfo[row].topline = true;
for (size_t c = 0; c < colinfo.size(); ++c)
cellinfos[c].topline = true;
} else {
rowinfo[row].bottomline = true;
for (size_t c = 0; c < colinfo.size(); ++c)
cellinfos[c].bottomline = true;
}
} else if (t.cs() == "cline") {
string arg = p1.verbatimItem();
//cerr << "read cline arg: '" << arg << "'\n";
vector<string> t;
split(arg, t, '-');
size_t from = string2int(t[0]);
size_t to = string2int(t[1]);
for (size_t col = from; col < to; ++col) {
if (i == 0)
cellinfos[col].topline = true;
else
cellinfos[col].bottomline = true;
}
} else {
cerr << "unexpected line token: " << t << endl;
}
}
os << " alignment=\"" << alignment << "\""
}
// split into cells
vector<string> cells;
split(lines[row], cells, TAB);
for (size_t col = 0, cell = 0; cell < cells.size(); ++col, ++cell) {
//cerr << "cell content: " << cells[col] << "\n";
Parser p(cells[cell]);
p.skipSpaces();
//cerr << "handling cell: " << p.nextToken().cs() << " '" <<
//cells[cell] << "'\n";
if (p.nextToken().cs() == "multicolumn") {
// how many cells?
p.getToken();
size_t ncells = string2int(p.verbatimItem());
// special cell properties alignment
vector<ColInfo> t;
bool leftline = handle_colalign(p, t);
CellInfo & ci = cellinfos[col];
ci.multi = 1;
ci.align = t.front().align;
ci.content = parse(p, FLAG_ITEM, mode, false);
ci.leftline = leftline;
ci.rightline = t.front().rightline;
// add dummy cells for multicol
for (size_t i = 0; i < ncells - 1; ++i) {
++col;
cellinfos[col].multi = 2;
cellinfos[col].align = "center";
}
} else {
cellinfos[col].content = parse(p, FLAG_ITEM, mode, false);
}
}
cellinfo.push_back(cellinfos);
// handle almost empty last row
if (row && lines[row].empty() && row + 1 == rowinfo.size()) {
//cerr << "remove empty last line\n";
if (rowinfo[row].topline);
rowinfo[row - 1].bottomline = true;
for (size_t c = 0; c < colinfo.size(); ++c)
if (cellinfo[row][c].topline)
cellinfo[row - 1][c].bottomline = true;
rowinfo.pop_back();
}
}
// output what we have
os << "<lyxtabular version=\"3\" rows=\"" << rowinfo.size()
<< "\" columns=\"" << colinfo.size() << "\">\n"
<< "<features>\n";
for (size_t col = 0; col < colinfo.size(); ++col) {
os << "<column alignment=\"" << colinfo[col].align << "\"";
if (colinfo[col].rightline)
os << " rightline=\"true\"";
if (col == 0 && leftline)
os << " leftline=\"true\"";
os << " valignment=\"top\"";
os << " width=\"" << colinfo[col].width << "\"";
os << ">\n";
}
for (size_t row = 0; row < rowinfo.size(); ++row) {
os << "<row";
if (rowinfo[row].topline)
os << " topline=\"true\"";
if (rowinfo[row].bottomline)
os << " bottomline=\"true\"";
os << ">\n";
for (size_t col = 0; col < colinfo.size(); ++col) {
CellInfo const & cell = cellinfo[row][col];
os << "<cell";
if (cell.multi)
os << " multicolumn=\"" << cell.multi << "\"";
if (cell.leftline)
os << " leftline=\"true\"";
if (cell.rightline)
os << " rightline=\"true\"";
if (cell.topline)
os << " topline=\"true\"";
if (cell.bottomline)
os << " bottomline=\"true\"";
os << " alignment=\"" << cell.align << "\""
<< " valignment=\"top\""
<< " topline=\"true\""
<< " leftline=\"true\""
<< " usebox=\"none\""
<< ">";
begin_inset(os, "Text");
os << "\n\n\\layout Standard\n\n";
if (parts.size())
os << parts.back();
os << cell.content;
end_inset(os);
os << "</cell>\n";
}
os << "</row>\n";
}
os << "</lyxtabular>\n";
end_inset(os);
}
string wrap(string const & cmd, string const & str)
{
return OPEN + cmd + ' ' + str + CLOSE;
}
void end_preamble(ostream & os)
{
os << "# tex2lyx 0.0.2 created this file\n"
@ -482,7 +703,7 @@ void parse_preamble(Parser & p, ostream & os)
break;
s += t.asString();
}
//os << wrap("comment", s);
//cerr << "comment\n";
p.skipSpaces();
}
@ -501,6 +722,11 @@ void parse_preamble(Parser & p, ostream & os)
else if (t.cs() == "newcommand" || t.cs() == "renewcommand"
|| t.cs() == "providecommand") {
bool star = false;
if (p.nextToken().character() == '*') {
p.getToken();
star = true;
}
string const name = p.verbatimItem();
string const opts = p.getOpt();
string const body = p.verbatimItem();
@ -514,8 +740,10 @@ void parse_preamble(Parser & p, ostream & os)
&& name != "\\boldsymbol "
&& name != "\\lyxarrow ") {
ostringstream ss;
ss << '\\' << t.cs() << '{' << name << '}'
<< opts << '{' << body << "}\n";
ss << '\\' << t.cs();
if (star)
ss << '*';
ss << '{' << name << '}' << opts << '{' << body << "}\n";
h_preamble << ss.str();
/*
ostream & out = in_preamble ? h_preamble : os;
@ -617,12 +845,13 @@ void parse_preamble(Parser & p, ostream & os)
void parse(Parser & p, ostream & os, unsigned flags, const mode_type mode,
bool outer)
{
string hlines;
while (p.good()) {
Token const & t = p.getToken();
#ifdef FILEDEBUG
cerr << "t: " << t << " flags: " << flags << "\n";
//cell->dump();
#endif
if (flags & FLAG_ITEM) {
@ -735,10 +964,13 @@ bool outer)
}
else if (t.cat() == catBegin) {
if (mode == TEXT_MODE)
if (mode == TEXT_MODE) {
handle_ert(os, "{");
else
parse(p, os, FLAG_BRACE_LAST, mode, outer);
handle_ert(os, "}");
} else {
os << '{';
}
}
else if (t.cat() == catEnd) {
@ -751,17 +983,21 @@ bool outer)
}
else if (t.cat() == catAlign) {
if (mode == TEXT_MODE)
if (mode == TABLE_MODE)
os << TAB;
else
os << t.character();
}
else if (t.cs() == "tabularnewline") {
if (mode == TEXT_MODE)
os << LINE;
else
if (mode == TABLE_MODE) {
// stuff before the line break
// and look ahead for stuff after the line break
os << HLINE << hlines << HLINE << LINE << read_hlines(p) << HLINE;
hlines.clear();
} else {
os << t.asInput();
}
}
else if (t.cs() == "\\" && mode == MATH_MODE)
@ -786,7 +1022,7 @@ bool outer)
break;
s += t.asString();
}
//os << wrap("comment", s);
//cerr << "comment\n";
p.skipSpaces();
}
@ -1010,17 +1246,17 @@ bool outer)
else if (t.cs() == "tableofcontents")
p.verbatimItem(); // swallow this
else if (t.cs() == "multicolumn" && mode == TEXT_MODE) {
// brutish...
parse(p, os, FLAG_ITEM, mode, outer);
os << MULT;
parse(p, os, FLAG_ITEM, mode, outer);
os << MULT;
parse(p, os, FLAG_ITEM, mode, outer);
}
else if (t.cs() == "hline" && mode == TABLE_MODE)
hlines += "\\hline";
else if (t.cs() == "hline" && mode == TEXT_MODE)
os << HLINE;
else if (t.cs() == "cline" && mode == TABLE_MODE)
hlines += "\\cline{" + p.verbatimItem() + '}';
else if (t.cs() == "scriptsize" && mode == TEXT_MODE)
os << "\n\\size scriptsize\n";
else if (t.cs() == "Large" && mode == TEXT_MODE)
os << "\n\\size larger\n";
else if (t.cs() == "textrm") {
if (mode == TEXT_MODE) {
@ -1184,10 +1420,7 @@ bool outer)
else {
//cerr << "#: " << t << " mode: " << mode << endl;
if (mode == MATH_MODE || mode == MATHTEXT_MODE) {
os << t.asInput();
//cerr << "#: writing: '" << t.asInput() << "'\n";
} else {
if (mode == TEXT_MODE) {
// heuristic: read up to next non-nested space
/*
string s = t.asInput();
@ -1201,6 +1434,9 @@ bool outer)
handle_ert(os, s + ' ');
*/
handle_ert(os, t.asInput() + ' ');
} else {
os << t.asInput();
//cerr << "#: writing: '" << t.asInput() << "'\n";
}
}

View File

@ -1,6 +1,7 @@
#include "texparser.h"
#include <iostream>
#include <sstream>
using std::cerr;
using std::endl;
@ -117,6 +118,13 @@ Parser::Parser(istream & is)
tokenize(is);
}
Parser::Parser(string const & s)
: lineno_(0), pos_(0)
{
istringstream is(s);
tokenize(is);
}
void Parser::push_back(Token const & t)
{

View File

@ -5,7 +5,7 @@
#include "LString.h"
#include <vector>
enum mode_type {UNDECIDED_MODE, TEXT_MODE, MATH_MODE, MATHTEXT_MODE};
enum mode_type {UNDECIDED_MODE, TEXT_MODE, MATH_MODE, MATHTEXT_MODE, TABLE_MODE};
mode_type asMode(mode_type oldmode, string const & str);
@ -46,7 +46,8 @@ enum {
FLAG_EQUATION = 1 << 9, // next \] leaves the loop
FLAG_SIMPLE2 = 1 << 10, // next \) leaves the loop
FLAG_OPTION = 1 << 11, // read [...] style option
FLAG_BRACED = 1 << 12 // read {...} style argument
FLAG_BRACED = 1 << 12, // read {...} style argument
FLAG_CELL = 1 << 13 // read table cell
};
@ -96,6 +97,8 @@ class Parser {
public:
///
Parser(std::istream & is);
///
Parser(string const & s);
///
int lineno() const { return lineno_; }