libzypp: zypp-core/parser/iniparser.cc Source File

libzypp 17.38.11

iniparser.cc
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1/*---------------------------------------------------------------------\
2| ____ _ __ __ ___ |
3| |__ / \ / / . \ . \ |
4| / / \ V /| _/ _/ |
5| / /__ | | | | | | |
6| /_____||_| |_| |_| |
7| |
8\---------------------------------------------------------------------*/
12
13#include "iniparser.h"
14
15#include <iostream>
16#include <sstream>
17
18#include <zypp-core/base/Logger.h>
19#include <zypp-core/base/String.h>
20#include <zypp-core/base/IOStream.h>
21#include <zypp-core/base/UserRequestException>
22
23#include <zypp-core/parser/ParseException>
24#include <zypp-core/ui/ProgressData>
25
26using std::endl;
27
29namespace zypp
30{
32namespace parser
33{
34
35 namespace {
36 inline const std::string & keyGarbage()
37 {
38 static const std::string & _val( ":/?|,\\" );
39 return _val;
40 }
41 } //namespace
42
44//
45// METHOD NAME : IniParser::IniParser
46// METHOD TYPE : Ctor
47//
48IniParser::IniParser()
49 : _line_nr(0)
50{}
51
52 IniParser::IniParser( IniParser && rhs )
53 : _inputname { std::move(rhs._inputname) }
54 , _current_section { std::move(rhs._current_section) }
55 , _line_nr { std::move(rhs._line_nr) }
56{}
57
59//
60// METHOD NAME : IniParser::~IniParser
61// METHOD TYPE : Dtor
62//
63IniParser::~IniParser()
64{}
65
66 void IniParser::beginParse()
67{}
68
69 void IniParser::consume( const std::string &section, const std::string &key, const std::string &value )
70{}
71
72 void IniParser::consume( const std::string &section )
73{}
74
75 void IniParser::endParse()
76{}
77
78 void IniParser::garbageLine( const std::string &section, const std::string &line )
79{
80 std::string msg = str::form("%s: Section [%s]: Line %d contains garbage (no '=' or '%s' in key)",
81 _inputname.c_str(), section.c_str(), _line_nr, keyGarbage().c_str());
82 ZYPP_THROW(ParseException(msg));
83}
84
86//
87// METHOD NAME : IniParser::parse
88// METHOD TYPE : void
89//
90 void IniParser::parse( const InputStream & input_r, const ProgressData::ReceiverFnc & progress )
91{
92 MIL << "Start parsing " << input_r << endl;
93 _inputname = input_r.name();
94 beginParse();
95
96 ProgressData ticks( makeProgressData( input_r ) );
97 ticks.sendTo(progress);
98 ticks.toMin();
99
100 iostr::EachLine line( input_r );
101 for ( ; line; line.next() )
102 {
103 std::string trimmed = str::trim(*line);
104
105 if (trimmed.empty() || trimmed[0] == ';' || trimmed[0] == '#')
106 continue ; /* Comment lines */
107
108 if (trimmed[0] == '[')
109 {
110 std::string::size_type pos = trimmed.rfind(']');
111 if ( pos != std::string::npos )
112 {
113 std::string section = trimmed.substr(1, pos-1);
114 consume(section);
115 section.swap(_current_section);
116 }
117 else
118 {
119 _line_nr = line.lineNo();
120 garbageLine( _current_section, trimmed );
121 }
122 continue;
123 }
124
125 std::string::size_type pos = trimmed.find('=');
126 if ( pos == std::string::npos || trimmed.find_first_of( keyGarbage() ) < pos )
127 {
128 _line_nr = line.lineNo();
129 garbageLine( _current_section, trimmed ); // may or may not throw
130 }
131 else
132 {
133 std::string key = str::rtrim(trimmed.substr(0, pos));
134 std::string value = str::ltrim(trimmed.substr(pos+1));
135 consume( _current_section, key, value);
136 }
137
138 // set progress and allow cancel
139 if ( ! ticks.set( input_r.stream().tellg() ) )
140 ZYPP_THROW(AbortRequestException());
141 }
142 ticks.toMax();
143
144 endParse();
145 _inputname.clear();
146 MIL << "Done parsing " << input_r << endl;
147}
148
150} // namespace parser
153} // namespace zypp
ZYPP_THROW
#define ZYPP_THROW(EXCPT)
Drops a logline and throws the Exception.
Definition Exception.h:459
IOStream.h
Logger.h
MIL
#define MIL
Definition Logger.h:103
String.h
zypp::InputStream
Helper to create and pass std::istream.
Definition inputstream.h:57
zypp::InputStream::name
const std::string & name() const
Name of the std::istream.
Definition inputstream.h:107
zypp::InputStream::stream
std::istream & stream() const
The std::istream.
Definition inputstream.h:93
zypp::ProgressData
Maintain [min,max] and counter (value) for progress counting.
Definition progressdata.h:132
zypp::ProgressData::sendTo
void sendTo(const ReceiverFnc &fnc_r)
Set ReceiverFnc.
Definition progressdata.h:229
zypp::ProgressData::toMax
bool toMax()
Set counter value to current max value (unless no range).
Definition progressdata.h:276
zypp::ProgressData::ReceiverFnc
function< bool(const ProgressData &)> ReceiverFnc
Most simple version of progress reporting The percentage in most cases.
Definition progressdata.h:140
zypp::ProgressData::toMin
bool toMin()
Set counter value to current min value.
Definition progressdata.h:272
zypp::ProgressData::set
bool set(value_type val_r)
Set new counter value.
Definition progressdata.h:249
zypp::iostr::EachLine
Simple lineparser: Traverse each line in a file.
Definition IOStream.h:113
zypp::iostr::EachLine::lineNo
unsigned lineNo() const
Return the current line number.
Definition IOStream.h:127
zypp::iostr::EachLine::next
bool next()
Advance to next line.
Definition IOStream.cc:72
zypp::parser::IniParser::_inputname
std::string _inputname
Definition iniparser.h:94
zypp::parser::IniParser::_line_nr
int _line_nr
Definition iniparser.h:96
zypp::parser::IniParser::garbageLine
virtual void garbageLine(const std::string &section, const std::string &line)
Called whenever a garbage line is found.
Definition iniparser.cc:78
zypp::parser::IniParser::~IniParser
virtual ~IniParser()
Dtor.
Definition iniparser.cc:63
zypp::parser::IniParser::beginParse
virtual void beginParse()
Called when start parsing.
Definition iniparser.cc:66
zypp::parser::IniParser::IniParser
IniParser()
Default ctor.
Definition iniparser.cc:48
zypp::parser::IniParser::_current_section
std::string _current_section
Definition iniparser.h:95
zypp::parser::IniParser::consume
virtual void consume(const std::string &section)
Called when a section is found.
Definition iniparser.cc:72
zypp::parser::IniParser::endParse
virtual void endParse()
Called when the parse is done.
Definition iniparser.cc:75
zypp::parser::IniParser::parse
void parse(const InputStream &imput_r, const ProgressData::ReceiverFnc &progress=ProgressData::ReceiverFnc())
Parse the stream.
Definition iniparser.cc:90
zypp::parser::ParseException
Definition parseexception.h:34
iniparser.h
std
Definition ansi.h:855
zypp::parser
Definition HistoryLogReader.cc:30
zypp::str::rtrim
std::string rtrim(const std::string &s)
Definition String.h:582
zypp::str::ltrim
std::string ltrim(const std::string &s)
Definition String.h:577
zypp::str::form
std::string form(const char *format,...) __attribute__((format(printf
Printf style construction of std::string.
Definition String.cc:39
zypp::str::trim
std::string trim(const std::string &s, const Trim trim_r)
Definition String.cc:226
zypp
Easy-to use interface to the ZYPP dependency resolver.
Definition CodePitfalls.doc:2
zypp::makeProgressData
ProgressData makeProgressData(const InputStream &input_r)
relates: ProgressData Setup from InputStream.
Definition progressdata.cc:124