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https://git.lyx.org/repos/lyx.git
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f6d14695d4
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@9399 a592a061-630c-0410-9148-cb99ea01b6c8
375 lines
8.1 KiB
C
375 lines
8.1 KiB
C
/**
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* \file lyxfind.C
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Lars Gullik Bjønnes
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* \author John Levon
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* \author Jürgen Vigna
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* \author Alfredo Braunstein
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "lyxfind.h"
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#include "buffer.h"
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#include "cursor.h"
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#include "CutAndPaste.h"
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#include "BufferView.h"
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#include "debug.h"
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#include "funcrequest.h"
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#include "gettext.h"
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#include "lyxtext.h"
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#include "paragraph.h"
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#include "pariterator.h"
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#include "undo.h"
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#include "frontends/Alert.h"
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#include "frontends/LyXView.h"
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#include "support/tostr.h"
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#include <sstream>
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using lyx::support::lowercase;
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using lyx::support::uppercase;
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using lyx::support::split;
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using lyx::pit_type;
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using lyx::pos_type;
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using std::advance;
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using std::ostringstream;
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using std::string;
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namespace {
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bool parse_bool(string & howto)
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{
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if (howto.empty())
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return false;
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string var;
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howto = split(howto, var, ' ');
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return (var == "1");
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}
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class MatchString : public std::binary_function<Paragraph, lyx::pos_type, bool>
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{
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public:
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MatchString(string const & str, bool cs, bool mw)
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: str(str), cs(cs), mw(mw)
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{}
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// returns true if the specified string is at the specified position
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bool operator()(Paragraph const & par, lyx::pos_type pos) const
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{
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string::size_type const size = str.length();
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lyx::pos_type i = 0;
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lyx::pos_type const parsize = par.size();
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for (i = 0; pos + i < parsize; ++i) {
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if (string::size_type(i) >= size)
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break;
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if (cs && str[i] != par.getChar(pos + i))
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break;
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if (!cs && uppercase(str[i]) != uppercase(par.getChar(pos + i)))
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break;
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}
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if (size != string::size_type(i))
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return false;
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// if necessary, check whether string matches word
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if (mw) {
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if (pos > 0 && par.isLetter(pos - 1))
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return false;
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if (pos + lyx::pos_type(size) < parsize
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&& par.isLetter(pos + size));
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return false;
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}
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return true;
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}
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private:
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// search string
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string str;
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// case sensitive
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bool cs;
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// match whole words only
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bool mw;
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};
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bool findForward(DocIterator & cur, MatchString const & match)
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{
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for (; cur; cur.forwardChar())
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if (cur.inTexted() && match(cur.paragraph(), cur.pos()))
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return true;
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return false;
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}
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bool findBackwards(DocIterator & cur, MatchString const & match)
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{
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while (cur) {
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cur.backwardChar();
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if (cur.inTexted() && match(cur.paragraph(), cur.pos()))
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return true;
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}
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return false;
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}
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bool findChange(DocIterator & cur)
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{
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for (; cur; cur.forwardChar())
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if (cur.inTexted() && cur.pos() != cur.paragraph().size() &&
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cur.paragraph().lookupChange(cur.pos())
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!= Change::UNCHANGED)
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return true;
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return false;
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}
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bool searchAllowed(BufferView * bv, string const & str)
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{
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if (str.empty()) {
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Alert::error(_("Search error"), _("Search string is empty"));
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return false;
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}
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return bv->available();
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}
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bool find(BufferView * bv, string const & searchstr, bool cs, bool mw, bool fw)
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{
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if (!searchAllowed(bv, searchstr))
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return false;
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DocIterator cur = bv->cursor();
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MatchString const match(searchstr, cs, mw);
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bool found = fw ? findForward(cur, match) : findBackwards(cur, match);
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if (found)
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bv->putSelectionAt(cur, searchstr.length(), !fw);
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return found;
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}
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int replaceAll(BufferView * bv,
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string const & searchstr, string const & replacestr,
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bool cs, bool mw)
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{
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Buffer & buf = *bv->buffer();
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if (!searchAllowed(bv, searchstr) || buf.isReadonly())
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return 0;
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recordUndoFullDocument(bv->cursor());
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MatchString const match(searchstr, cs, mw);
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int num = 0;
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int const rsize = replacestr.size();
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int const ssize = searchstr.size();
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DocIterator cur = doc_iterator_begin(buf.inset());
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while (findForward(cur, match)) {
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lyx::pos_type pos = cur.pos();
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LyXFont const font
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= cur.paragraph().getFontSettings(buf.params(), pos);
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int striked = ssize - cur.paragraph().erase(pos, pos + ssize);
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cur.paragraph().insert(pos, replacestr, font);
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for (int i = 0; i < rsize + striked; ++i)
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cur.forwardChar();
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++num;
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}
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bv->text()->init(bv);
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bv->putSelectionAt(doc_iterator_begin(buf.inset()), 0, false);
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if (num)
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buf.markDirty();
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return num;
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}
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bool stringSelected(BufferView * bv, string const & searchstr,
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bool cs, bool mw, bool fw)
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{
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// if nothing selected or selection does not equal search
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// string search and select next occurance and return
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string const & str1 = searchstr;
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string const str2 = bv->cursor().selectionAsString(false);
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if ((cs && str1 != str2) || lowercase(str1) != lowercase(str2)) {
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find(bv, searchstr, cs, mw, fw);
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return false;
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}
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return true;
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}
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int replace(BufferView * bv, string const & searchstr,
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string const & replacestr, bool cs, bool mw, bool fw)
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{
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if (!searchAllowed(bv, searchstr) || bv->buffer()->isReadonly())
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return 0;
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if (!stringSelected(bv, searchstr, cs, mw, fw))
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return 0;
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LCursor & cur = bv->cursor();
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lyx::cap::replaceSelectionWithString(cur, replacestr);
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lyx::cap::setSelectionRange(cur, replacestr.length());
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cur.top() = fw ? cur.selEnd() : cur.selBegin();
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bv->buffer()->markDirty();
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find(bv, searchstr, cs, mw, fw);
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bv->update();
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return 1;
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}
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} // namespace anon
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namespace lyx {
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namespace find {
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string const find2string(string const & search,
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bool casesensitive, bool matchword, bool forward)
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{
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ostringstream ss;
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ss << search << '\n'
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<< int(casesensitive) << ' '
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<< int(matchword) << ' '
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<< int(forward);
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return ss.str();
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}
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string const replace2string(string const & search, string const & replace,
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bool casesensitive, bool matchword,
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bool all, bool forward)
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{
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ostringstream ss;
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ss << search << '\n'
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<< replace << '\n'
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<< int(casesensitive) << ' '
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<< int(matchword) << ' '
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<< int(all) << ' '
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<< int(forward);
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return ss.str();
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}
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void find(BufferView * bv, FuncRequest const & ev)
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{
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if (!bv || ev.action != LFUN_WORD_FIND)
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return;
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lyxerr << "find called, cmd: " << ev << std::endl;
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// data is of the form
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// "<search>
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// <casesensitive> <matchword> <forward>"
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string search;
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string howto = split(ev.argument, search, '\n');
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bool casesensitive = parse_bool(howto);
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bool matchword = parse_bool(howto);
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bool forward = parse_bool(howto);
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bool const found = ::find(bv, search,
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casesensitive, matchword, forward);
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if (!found)
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bv->owner()->message(_("String not found!"));
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}
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void replace(BufferView * bv, FuncRequest const & ev)
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{
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if (!bv || ev.action != LFUN_WORD_REPLACE)
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return;
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// data is of the form
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// "<search>
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// <replace>
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// <casesensitive> <matchword> <all> <forward>"
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string search;
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string replace;
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string howto = split(ev.argument, search, '\n');
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howto = split(howto, replace, '\n');
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bool casesensitive = parse_bool(howto);
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bool matchword = parse_bool(howto);
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bool all = parse_bool(howto);
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bool forward = parse_bool(howto);
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LyXView * lv = bv->owner();
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int const replace_count = all
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? ::replaceAll(bv, search, replace, casesensitive, matchword)
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: ::replace(bv, search, replace, casesensitive, matchword, forward);
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if (replace_count == 0) {
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lv->message(_("String not found!"));
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} else {
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if (replace_count == 1) {
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lv->message(_("String has been replaced."));
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} else {
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string str = tostr(replace_count);
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str += _(" strings have been replaced.");
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lv->message(str);
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}
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}
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}
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bool findNextChange(BufferView * bv)
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{
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if (!bv->available())
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return false;
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DocIterator cur = DocIterator(bv->cursor());
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if (!findChange(cur))
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return false;
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Paragraph const & par = cur.paragraph();
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const pos_type pos = cur.pos();
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Change orig_change = par.lookupChangeFull(pos);
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const pos_type parsize = par.size();
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pos_type end = pos;
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for (; end != parsize; ++end) {
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Change change = par.lookupChangeFull(end);
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if (change != orig_change) {
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// slight UI optimisation: for replacements, we get
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// text like : _old_new. Consider that as one change.
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if (!(orig_change.type == Change::DELETED &&
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change.type == Change::INSERTED))
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break;
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}
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}
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pos_type length = end - pos;
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bv->putSelectionAt(cur, length, false);
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// if we used a lfun like in find/replace, dispatch would do
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// that for us
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bv->update();
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return true;
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}
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} // find namespace
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} // lyx namespace
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