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
|
#pragma once
#include <mutex>
#include <atomic>
#include <vector>
#include <optional>
#include <replxx.hxx>
#include <base/types.h>
#include <base/defines.h>
namespace DB
{
class LineReader
{
public:
struct Suggest
{
using Words = std::vector<std::string>;
using Callback = std::function<Words(const String & prefix, size_t prefix_length)>;
/// Get vector for the matched range of words if any.
replxx::Replxx::completions_t getCompletions(const String & prefix, size_t prefix_length, const char * word_break_characters);
void addWords(Words && new_words);
void setCompletionsCallback(Callback && callback) { custom_completions_callback = callback; }
private:
Words words TSA_GUARDED_BY(mutex);
Words words_no_case TSA_GUARDED_BY(mutex);
Callback custom_completions_callback = nullptr;
std::mutex mutex;
};
using Patterns = std::vector<const char *>;
LineReader(const String & history_file_path, bool multiline, Patterns extenders, Patterns delimiters);
virtual ~LineReader() = default;
/// Reads the whole line until delimiter (in multiline mode) or until the last line without extender.
/// If resulting line is empty, it means the user interrupted the input.
/// Non-empty line is appended to history - without duplication.
/// Typical delimiter is ';' (semicolon) and typical extender is '\' (backslash).
String readLine(const String & first_prompt, const String & second_prompt);
/// When bracketed paste mode is set, pasted text is bracketed with control sequences so
/// that the program can differentiate pasted text from typed-in text. This helps
/// clickhouse-client so that without -m flag, one can still paste multiline queries, and
/// possibly get better pasting performance. See https://cirw.in/blog/bracketed-paste for
/// more details.
/// These methods (if implemented) emit the control characters immediately, without waiting
/// for the next readLine() call.
virtual void enableBracketedPaste() {}
virtual void disableBracketedPaste() {}
protected:
enum InputStatus
{
ABORT = 0,
RESET_LINE,
INPUT_LINE,
};
const String history_file_path;
String input;
bool multiline;
Patterns extenders;
Patterns delimiters;
String prev_line;
virtual InputStatus readOneLine(const String & prompt);
virtual void addToHistory(const String &) {}
};
}
|
