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Merged regex-4 branch.

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[SVN r18430]
This commit is contained in:
John Maddock
2003-05-17 11:45:48 +00:00
parent a81a1ea30f
commit f0f32bdda1
154 changed files with 32893 additions and 432 deletions
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47
example/jgrep/jgrep.cpp
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@ -19,6 +19,7 @@
*/
#include <stdio.h>
#include <algorithm>
#include <boost/regex.hpp>
#ifdef JM_OLD_IOSTREAM
#include <iostream.h>
@ -33,7 +34,11 @@ using std::endl;
# pragma hrdstop
#endif
#ifdef BOOST_REGEX_V3
#include <boost/regex/v3/fileiter.hpp>
#else
#include <boost/regex/v4/fileiter.hpp>
#endif
#include "jgrep.h"
@ -47,10 +52,10 @@ class ogrep_predicate
unsigned int& lines;
const char* filename;
unsigned int last_line;
iterator end_of_storage;
iterator end_of_storage, last_line_start;
public:
ogrep_predicate(unsigned int& i, const char* p, iterator e) : lines(i), filename(p), last_line(-1), end_of_storage(e) {}
ogrep_predicate(const ogrep_predicate& o) : lines(o.lines), filename(o.filename), last_line(o.last_line), end_of_storage(o.end_of_storage) {}
ogrep_predicate(unsigned int& i, const char* p, iterator start, iterator end) : lines(i), filename(p), last_line(-1), end_of_storage(end), last_line_start(start) {}
ogrep_predicate(const ogrep_predicate& o) : lines(o.lines), filename(o.filename), last_line(o.last_line), end_of_storage(o.end_of_storage), last_line_start(o.last_line_start) {}
bool operator () (const boost::match_results<iterator, Allocator>& i);
};
@ -63,42 +68,54 @@ public:
template <class iterator, class Allocator>
bool ogrep_predicate<iterator, Allocator>::operator()(const boost::match_results<iterator, Allocator>& i)
{
// if we haven't printed the filename yet, then do it now:
if(last_line == (unsigned int)-1)
{
cout << "File " << filename << ":" << endl;
if(last_line != i.line())
last_line = 0;
}
// calculate which line we are on, by adding the number of newlines
// we've skipped in the last search:
int current_line = last_line + std::count(last_line_start, end_of_storage, '\n');
// if we haven't already printed this line out, then do it now:
if(last_line != current_line)
{
++lines;
last_line = i.line();
last_line = current_line;
if(count_only == 0)
{
if(show_lines)
cout << i.line() << "\t";
iterator ptr = i.line_start();
while((ptr != end_of_storage) && (*ptr != '\n'))++ptr;
iterator pos = i.line_start();
while(pos != ptr)
cout << current_line << "\t";
const char* nls = "\n";
iterator ptr = std::find_end(last_line_start, i[0].first, nls, nls+1);
++ptr;
iterator ptr2 = ptr;
while((ptr2 != end_of_storage) && (*ptr2 != '\n'))++ptr2;
while(ptr != ptr2)
{
cout.put(*pos);
++pos;
cout.put(*ptr);
++ptr;
}
cout << endl;
}
}
// set the last line seen to the start of the current match:
last_line_start = i[0].first;
return true;
}
using namespace boost;
void process_grep(const char* file)
{
try{
using namespace boost;
mapfile f(file);
unsigned int count = 0;
ogrep_predicate<mapfile::iterator, allocator_type> oi(count, file, f.end());
ogrep_predicate<mapfile::iterator, boost::match_results<mapfile::iterator>::allocator_type> oi(count, file, f.begin(), f.end());
if(files_only)
{
bool ok;
boost::match_results<mapfile::iterator, allocator_type> m;
boost::match_results<mapfile::iterator> m;
ok = regex_search(f.begin(), f.end(), m, e, match_not_dot_newline | match_not_dot_null);
if(ok)
cout << "File " << file << endl;