1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
#include "filters.hh"
#include "buffer.hh"
#include "filter_group.hh"
#include "selection.hh"
namespace Kakoune
{
void preserve_indent(Buffer& buffer, Selection& selection, String& content)
{
if (content == "\n")
{
BufferIterator line_begin = buffer.iterator_at_line_begin(selection.last() - 1);
BufferIterator first_non_white = line_begin;
while ((*first_non_white == '\t' or *first_non_white == ' ') and
not first_non_white.is_end())
++first_non_white;
content += buffer.string(line_begin, first_non_white);
}
}
void cleanup_whitespaces(Buffer& buffer, Selection& selection, String& content)
{
const BufferIterator& position = selection.last();
if (content[0] == '\n' and not position.is_begin())
{
BufferIterator whitespace_start = position-1;
while ((*whitespace_start == ' ' or *whitespace_start == '\t') and
not whitespace_start .is_begin())
--whitespace_start;
++whitespace_start;
if (whitespace_start!= position)
buffer.erase(whitespace_start, position);
}
}
void expand_tabulations(Buffer& buffer, Selection& selection, String& content)
{
const int tabstop = buffer.options()["tabstop"].as_int();
if (content == "\t")
{
int column = 0;
const BufferIterator& position = selection.last();
for (auto line_it = buffer.iterator_at_line_begin(position);
line_it != position; ++line_it)
{
assert(*line_it != '\n');
if (*line_it == '\t')
column += tabstop - (column % tabstop);
else
++column;
}
int count = tabstop - (column % tabstop);
content = String();
for (int i = 0; i < count; ++i)
content += ' ';
}
}
struct RegexFilter
{
RegexFilter(const String& line_match, const String& insert_match,
const String& replacement)
: m_line_match(line_match.c_str()), m_insert_match(insert_match.c_str()),
m_replacement(replacement.c_str()) {}
void operator() (Buffer& buffer, Selection& selection, String& content)
{
const auto& position = selection.last();
auto line_begin = buffer.iterator_at_line_begin(position);
boost::match_results<BufferIterator> results;
if (boost::regex_match(content.c_str(), m_insert_match) and
boost::regex_match(line_begin, position, results, m_line_match))
{
content = results.format(m_replacement.c_str());
auto it = std::find(content.begin(), content.end(), '$');
if (it != content.end())
{
++it;
if (it != content.end() && *it == 'c')
{
String suffix(it+1, content.end());
content = String(content.begin(), it-1);
auto first = selection.first();
auto last = selection.last();
buffer.insert(position, suffix);
if (selection.first() == selection.last())
selection.first() -= suffix.length();
selection.last() -= suffix.length();
}
}
}
}
private:
Regex m_line_match;
Regex m_insert_match;
String m_replacement;
};
FilterAndId regex_filter_factory(const FilterParameters& params)
{
if (params.size() != 3)
throw runtime_error("wrong parameter count");
return FilterAndId{"re" + params[0] + "__" + params[1],
RegexFilter{params[0], params[1], params[2]}};
}
template<void (*filter_func)(Buffer&, Selection&, String&)>
class SimpleFilterFactory
{
public:
SimpleFilterFactory(const String& id) : m_id(id) {}
FilterAndId operator()(const FilterParameters& params) const
{
return FilterAndId(m_id, FilterFunc(filter_func));
}
private:
String m_id;
};
FilterAndId filter_group_factory(const FilterParameters& params)
{
if (params.size() != 1)
throw runtime_error("wrong parameter count");
return FilterAndId(params[0], FilterGroup());
}
void register_filters()
{
FilterRegistry& registry = FilterRegistry::instance();
registry.register_func("preserve_indent", SimpleFilterFactory<preserve_indent>("preserve_indent"));
registry.register_func("cleanup_whitespaces", SimpleFilterFactory<cleanup_whitespaces>("cleanup_whitespaces"));
registry.register_func("expand_tabulations", SimpleFilterFactory<expand_tabulations>("expand_tabulations"));
registry.register_func("regex", regex_filter_factory);
registry.register_func("group", filter_group_factory);
}
}
|
