LDF Metadata Exchange Utilities Manual 1.0

Short Contents

Table of Contents

Next: , Previous: (dir), Up: (dir)

This is the LDF Metadata Exchange Utilities Manual edition 1.1 for the LDF Metadata Exchange Utilities 1.1. It contains text from the IWF Metadata Harvester User and Reference Manual II (Scantest), edition 1.0 for the IWF Metadata Harvester 1.0. This manual was last updated on 11 February 2007. The LDF Metadata Exchange Utilities are a package for metadata exchange. The author is Laurence D. Finston.

The following copyright notice applies to the contents of this manual up to and including January 31, 2007:

Copyright © 2006, 2007 IWF Wissen und Medien gGmbH

The following copyright notice applies to all changes and additions to this manual starting on February 1, 2007:

Copyright (C) 2007 Laurence D. Finston

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled “GNU Free Documentation License”.

--- The Detailed Node Listing ---

Utility Types

Mutex_Type

Global Functions

Date_Time_Type

Functions

Datasource_Type

Functions

Id_Type

Functions

Query_Type

Functions

Token_Type

Functions

Scanner_Type

Functions

Destructor

Namespace Scan_Parse

Functions

Parser Rule Functions

Parser

Operators

Control

Database Tables and Columns

Next: , Previous: Top, Up: Top

1 Introduction

Next: , Previous: Introduction, Up: Top

2 Utility Types

Previous: Utility Types, Up: Utility Types

2.1 Mutex_Type

struct Mutex_Type is declared in nonwin.web.

Previous: Mutex_Type, Up: Mutex_Type

2.1.1 Functions

— Public functions: int Lock (void)
— : int Unlock (void)

These functions currently return 0 immediately.

Next: , Previous: Utility Types, Up: Top

3 Global Variables

— Global variables: Mutex_Type cerr_mutex
— : Mutex_Type cout_mutex
— : Mutex_Type time_mutex
— : Mutex_Type tex_mutex

These variables are declared in main.web. They are used in the GNU/Linux version of Scantest.

— Global variables: CMutex log_strm_mutex
— : CMutex cerr_mutex
— : CMutex cout_mutex

These variables are declared in scantest.web. They are used in the Microsoft Windows of Scantest.

— Global variable: unsigned short tex_file_ctr

This variable is declared in main.web. It is used in the GNU/Linux version of Scantest.

— Global variable: string tex_filename_str

This variable is declared in main.web. It is used in the GNU/Linux version of Scantest.

— Global variable: string copyright_tex_str

This variable is declared in main.web. It is used in the GNU/Linux version of Scantest.

— Global variable: ofstream tex_file_strm

This variable is declared in main.web. It is used in the GNU/Linux version of Scantest.

— Global variables: ifstream in_strm
— : ofstream log_strm

These variables are declared scantest.web. They are used in the Microsoft Windows version of Scantest.

Next: , Previous: Global Variables, Up: Top

4 Global Functions

Next: , Previous: Global Functions, Up: Global Functions

4.1 Main Function for GNU Linux

— Function: int main (int argc, char* argv[])

The main function used in the GNU/Linux version of Scantest. It is the entry point of the program.

Next: , Previous: Main Function for GNU Linux, Up: Global Functions

4.2 Main function for Microsoft Windows

— Function: int _tmain (int argc,
TCHAR* argv[],
TCHAR* envp[])

The main function used in the Microsoft Windows version of Scantest. It is the entry point of the program.

Previous: Main function for Microsoft Windows, Up: Global Functions

4.3 Other Functions

— Function: void yyerror (const char* s)

Next: , Previous: Global Functions, Up: Top

5 Date_Time_Type

Class Date_Time_Type is declared in dttmtype.web. Ctangling dttmtype.web generates dttmtype.h. Date_Time_Node is a synonym for Date_Time_Type*. class Query_Type is a friend of Date_Time_Type.

Next: , Previous: Date_Time_Type, Up: Date_Time_Type

5.1 Data Members

— Private variables: short* year_range_begin
— : short* year_range_end
— : short* year
— : unsigned short* month
— : unsigned short* day
— : unsigned short* hour
— : unsigned short* minute
— : float* second

Previous: Data Members Date_Time_Type, Up: Date_Time_Type

5.2 Functions

Next: , Previous: Functions Date_Time_Type, Up: Functions Date_Time_Type

5.2.1 Constructor and Destructor

— Constructor: void Date_Time_Type (void)
— Destructor: void ~Date_Time_Type (void)

Next: , Previous: Constructor and Destructor Date_Time_Type, Up: Functions Date_Time_Type

5.2.2 Operators

— Assignment operator: Date_Time_Node Date_Time_Type::operator= (const Date_Time_Type&)

Next: , Previous: Operators Date_Time_Type, Up: Functions Date_Time_Type

5.2.3 Showing

— Member Function: int show (string)

Previous: Showing Date_Time_Type, Up: Functions Date_Time_Type

5.2.4 Output

— Output operator: ostream& operator<< (ostream&, Date_Time_Type&)

Next: , Previous: Date_Time_Type, Up: Top

6 Datasource_Type

Class Datasource_Type is declared in dtsrctyp.web. Ctangling dtsrctyp.web generates dtsrctyp.h. Datasource_Node is a synonym for Datasource_Type*.

Next: , Previous: Datasource_Type, Up: Datasource_Type

6.1 Data Members

— Private variables: unsigned short type
— : string name
— : void* value
— : Scanner_Node scanner_node
— Private static variable: map<unsigned short, string> datasource_type_map
— Public static constants: unsigned short DATASOURCE_TYPE_NULL_TYPE
— : unsigned short DBT_TYPE
— : unsigned short GBV_GVK_TYPE
— : unsigned short TIMMS_TYPE
— : unsigned short DATASOURCE_FILE_TYPE

Previous: Data Members Datasource_Type, Up: Datasource_Type

6.2 Functions

Next: , Previous: Functions Datasource_Type, Up: Functions Datasource_Type

6.2.1 Constructors and Setting Functions

— Constructor: void Datasource_Type (void)
— Member Function: int set (unsigned short datasource_type, Scanner_Node sscanner_node)

Next: , Previous: Constructors and Setting Functions Datasource_Type, Up: Functions Datasource_Type

6.2.2 Destructor

— Destructor: void ~Datasource_Type (void)

Next: , Previous: Destructor Datasource_Type, Up: Functions Datasource_Type

6.2.3 Operators

— Assignment Operator: Datasource_Node operator= (const Datasource_Type&)

Next: , Previous: Operators Datasource_Type, Up: Functions Datasource_Type

6.2.4 Initializing Maps

— Static Function: int initialize_type_maps (void)

Previous: Initializing Maps Datasource_Type, Up: Functions Datasource_Type

6.2.5 Showing

— Function: int show (string, Scanner_Node)
1

Next: , Previous: Datasource_Type, Up: Top

7 Id_Type

struct Id_Type is declared in idtype.web. Ctangling idtype.web generates idtype.h. Id_Node is a synonym for Id_Type*. class Scanner_Type is a friend of Id_Type.

Next: , Previous: Id_Type, Up: Id_Type

7.1 Data Members

— Public variables: string name
— : void* value
— : unsigned short type
— : unsigned short subtype
— : Scanner_Node scanner_node
— : Id_Node up
— : Id_Node left
— : Id_Node right
— Public static variable: static map<unsigned short, string> subtype_map
— Public static constants: unsigned short TEX_STRING_TYPE
— : unsigned short SQL_STRING_TYPE
— : unsigned short PQF_STRING_TYPE

Previous: Data Members Id_Type, Up: Id_Type

7.2 Functions

Next: , Previous: Functions Id_Type, Up: Functions Id_Type

7.2.1 Constructors

— Constructor: void Id_Type (void)

Next: , Previous: Constructors Id_Type, Up: Functions Id_Type

7.2.2 Destructor

— Destructor: void ~Id_Type (void)

Next: , Previous: Destructor Id_Type, Up: Functions Id_Type

7.2.3 Initialize Maps

— Member Function: int initialize_subtype_map (Scanner_Node)

Previous: Initialize Maps Id_Type, Up: Functions Id_Type

7.2.4 Showing

— Member Function: int show (string)

Next: , Previous: Id_Type, Up: Top

8 Query_Type

Class Query_Type is declared in querytyp.web. Ctangling querytyp.web generates querytyp.h. Query_Node is a synonym for Query_Type*.

Next: , Previous: Query_Type, Up: Query_Type

8.1 Data Members

— Private Variables: unsigned short query_type
— : unsigned short field_type
— : unsigned short value_type
— : vector<unsigned short> target_types
— : Id_Node id_node
— : bool negated
— : string name
— : void* value
— : Query_Node up
— : Query_Node and_node
— : Query_Node or_node
— : Query_Node xor_node
— : unsigned short match_value
— : Scanner_Node scanner_node
— : unsigned short query_ctr
— Private Static Variables: map<unsigned short, string> query_type_map
— : map<unsigned short, string> field_type_map
— : map<unsigned short, string> value_type_map
— : map<unsigned short, string> target_type_map
— : map<unsigned short, string> match_value_map
— Public Static Constants: unsigned short QUERY_TYPE_NULL_TYPE
— : unsigned short TOP_TYPE
— : unsigned short AND_TYPE
— : unsigned short OR_TYPE
— : unsigned short XOR_TYPE
— : unsigned short ACCESS_NUMBER_FIELD
— : unsigned short AUTHOR_FIELD
— : unsigned short BIBLIOGRAPHIC_TYPE_FIELD
— : unsigned short CALL_NUMBER_FIELD
— : unsigned short CLASSIFICATION_FIELD
— : unsigned short COMPANY_FIELD
— : unsigned short CONTENT_SUMMARY_FIELD
— : unsigned short CONTRIBUTOR_FIELD
— : unsigned short CREATOR_FIELD
— : unsigned short DATABASE_PROVIDER_FIELD
— : unsigned short DESCRIPTION_FIELD
— : unsigned short EXEMPLAR_PRODUCTION_NUMBER_FIELD
— : unsigned short IDENTIFIER_FIELD
— : unsigned short INSTITUTION_FIELD
— : unsigned short LANGUAGE_FIELD
— : unsigned short MAIN_CANONICAL_TITLE_FIELD
— : unsigned short PERMUTATION_PATTERN_FIELD
— : unsigned short PHYSICAL_DESCRIPTION_FIELD
— : unsigned short PERSON_FIELD
— : unsigned short PUBLISHER_FIELD
— : unsigned short RECORD_FIELD
— : unsigned short REMOTE_ACCESS_FIELD
— : unsigned short RIGHTS_FIELD
— : unsigned short SOURCE_FIELD
— : unsigned short SUBJECT_FIELD
— : unsigned short SUPERORDINATE_ENTITIES_FIELD
— : unsigned short TITLE_FIELD
— : unsigned short TYPE_FIELD
— : unsigned short AUTHOR_SURNAME_FIELD
— : unsigned short AUTHOR_GIVEN_NAME_FIELD
— : unsigned short AUTHOR_PREFIX_FIELD
— : unsigned short CONTRIBUTOR_SURNAME_FIELD
— : unsigned short CONTRIBUTOR_GIVEN_NAME_FIELD
— : unsigned short CONTRIBUTOR_PREFIX_FIELD
— : unsigned short RECORD_ID_FIELD
— : unsigned short RECORD_ELN_ORIGINAL_ENTRY_FIELD
— : unsigned short RECORD_ELN_MOST_RECENT_CHANGE_FIELD
— : unsigned short RECORD_ELN_STATUS_CHANGE_FIELD
— : unsigned short RECORD_IDENTIFICATION_NUMBER_FIELD
— : unsigned short RECORD_DATE_ORIGINAL_ENTRY_FIELD
— : unsigned short RECORD_DATE_MOST_RECENT_CHANGE_FIELD
— : unsigned short RECORD_DATE_STATUS_CHANGE_FIELD
— : unsigned short RECORD_SOURCE_ID_FIELD
— : unsigned short RECORD_YEAR_APPEARANCE_BEGIN_FIELD
— : unsigned short RECORD_YEAR_APPEARANCE_END_FIELD
— : unsigned short RECORD_YEAR_APPEARANCE_RAK_WB_FIELD
— : unsigned short RECORD_YEAR_APPEARANCE_ORIGINAL_FIELD
— : unsigned short INT_TYPE
— : unsigned short FLOAT_TYPE
— : unsigned short QUERY_TYPE_STRING_TYPE
— : unsigned short DATE_TIME_TYPE
— : unsigned short LOCAL_DATABASE_TARGET
— : unsigned short LOCAL_SERVER_TARGET
— : unsigned short REMOTE_DATABASE_TARGET
— : unsigned short REMOTE_SERVER_TARGET
— : unsigned short CONTAINS_VALUE
— : unsigned short FREETEXT_VALUE
— : unsigned short LIKE_VALUE
— Public Static Variables: bitset<QUERY_TYPE_BITSET_SIZE> NULL_BITSET
— : bitset<QUERY_TYPE_BITSET_SIZE> ACCESS_NUMBER_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> AUTHOR_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> AUTHOR_SURNAME_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> AUTHOR_GIVEN_NAME_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> AUTHOR_PREFIX_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> BIBLIOGRAPHIC_TYPE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> CALL_NUMBER_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> CLASSIFICATION_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> COMPANY_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> CONTENT_SUMMARY_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> CONTRIBUTOR_SURNAME_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> CONTRIBUTOR_GIVEN_NAME_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> CONTRIBUTOR_PREFIX_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> CREATOR_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> CONTRIBUTOR_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> DATABASE_PROVIDER_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> DESCRIPTION_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> EXEMPLAR_PRODUCTION_NUMBER_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> IDENTIFIER_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> INSTITUTION_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> LANGUAGE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> MAIN_CANONICAL_TITLE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> PERMUTATION_PATTERN_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> PERSON_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> PHYSICAL_DESCRIPTION_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> PUBLISHER_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_ID_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_ELN_ORIGINAL_ENTRY_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_ELN_MOST_RECENT_CHANGE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_ELN_STATUS_CHANGE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_IDENTIFICATION_NUMBER_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_DATE_ORIGINAL_ENTRY_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_DATE_MOST_RECENT_CHANGE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_DATE_STATUS_CHANGE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_SOURCE_ID_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_YEAR_APPEARANCE_BEGIN_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_YEAR_APPEARANCE_END_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_YEAR_APPEARANCE_RAK_WB_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RECORD_YEAR_APPEARANCE_ORIGINAL_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> REMOTE_ACCESS_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> RIGHTS_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> SOURCE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> SUBJECT_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> SUPERORDINATE_ENTITIES_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> TITLE_FLAG
— : bitset<QUERY_TYPE_BITSET_SIZE> TYPE_FLAG

Previous: Data Members Query_Type, Up: Query_Type

8.2 Functions

Next: , Previous: Functions Query_Type, Up: Functions Query_Type

8.2.1 Constructors and Setting Functions

— Constructor: void Query_Type (void)
— Setting Function: int Query_Type::set (unsigned short qquery_type,
unsigned short ffield_type,
unsigned short vvalue_type,
unsigned short target_type,
bool nnegated,
void* vvalue,
Query_Node uup,
Query_Node aand_node,
Query_Node oor_node,
Query_Node xxor_node,
Scanner_Node sscanner_node)

Next: , Previous: Constructors and Setting Functions Query_Type, Up: Functions Query_Type

8.2.2 Destructor

— Destructor: void ~Query_Type (void)

Next: , Previous: Destructor Query_Type, Up: Functions Query_Type

8.2.3 Operators

— Assignment Operator: Query_Node operator= (const Query_Type&)

Next: , Previous: Operators Query_Type, Up: Functions Query_Type

8.2.4 Initializing and Flags Maps

— Static Member Function: int initialize_type_maps (void)
— Static Member Function: int initialize_flags (void)

Next: , Previous: Initializing Maps and Flags Query_Type, Up: Functions Query_Type

8.2.5 Set Field Specifier

— Member Function: int set_field_specifier (void* v,
bool traverse,
Scanner_Node sscanner_node)

Next: , Previous: Set Field Specifier Query_Type, Up: Functions Query_Type

8.2.6 Generate Strings

— Member functions: string generate_tex_string (Scanner_Node scanner_node,
stringstream* tex_strm)
— : int generate_sql_string (Scanner_Node scanner_node,
int database_type,
stringstream* sql_strm,
stringstream* select_strm,
stringstream* from_strm,
stringstream* where_strm_0,
stringstream* where_strm_1,
bool* first_select,
bool* first_from,
bool* first_where,
bitset<QUERY_TYPE_BITSET_SIZE>* field_flags,
string* return_str)

Previous: Generate Strings Query_Type, Up: Functions Query_Type

8.2.7 Showing Query_Type

— Member Function: int show (string, Scanner_Node)

Next: , Previous: Query_Type, Up: Top

9 Token_Type

struct Token_Type is declared in scnrtype.web.

Next: , Previous: Token_Type, Up: Token_Type

9.1 Data Members

— Public data members: unsigned int type
— : YYSTYPE value

Previous: Data Members Token_Type, Up: Token_Type

9.2 Functions

Previous: Functions Token_Type, Up: Functions Token_Type
9.2.0.1 Constructors

— Default constructor: void Token_Type (void)
— Constructor: void Token_Type (unsigned int ttype, YYSTYPE vvalue)

Next: , Previous: Token_Type, Up: Top

10 Scanner_Type

Class Scanner_Type is declared in scnrtype.web.

Next: , Previous: Scanner_Type, Up: Scanner_Type

10.1 Data Members

— Private variables: char in_filename[128]
— : char log_filename[128]
— : ifstream in_strm
— : map<string, Id_Type*> id_map
— : stack<Token_Type> token_stack
— : vector<float> float_vector
— Public variables: ofstream log_strm

Next: , Previous: Data Members Scanner_Type, Up: Scanner_Type

10.2 Functions

Next: , Previous: Functions Scanner_Type, Up: Functions Scanner_Type

10.2.1 Constructor

— Default constructor: void Scanner_Type (void)

Previous: Constructor Scanner_Type, Up: Functions Scanner_Type

10.2.2 Destructor

— Destructor: void ~Scanner_Type (void)

Previous: Destructor Scanner_Type, Up: Destructor Scanner_Type
10.2.2.1 Initializing Maps

— Function: int initialize_id_map (void)

Previous: Functions Scanner_Type, Up: Scanner_Type

10.3 Other functions

— Function: Id_Node lookup (char* name,
bool create,
unsigned int type)

Next: , Previous: Scanner_Type, Up: Top

11 Namespace Scan_Parse

namespace Scan_Parse is declared in scanner.web. Ctangling scanner.web generates scanner.h. Unless otherwise stated, the variables and datatypes described in this chapter are all declared within the namespace Scan_Parse.

Next: , Previous: Namespace Scan_Parse, Up: Namespace Scan_Parse

11.1 Keyword_Type

struct Keyword_Type is declared in scanner.web.

— Member variables: string name
— : int value
— : string value_name

Next: , Previous: Keyword_Type Scan_Parse, Up: Namespace Scan_Parse

11.2 Constants

— extern constants: unsigned int NULL_STATE
— : unsigned int COLLECTING_ID
— : unsigned int COLLECTING_STRING
— : unsigned int COLLECTING_INTEGER
— : unsigned int COLLECTING_FLOAT

Next: , Previous: Constants Scan_Parse, Up: Namespace Scan_Parse

11.3 Variables

— Variables: map<string, Keyword_Type*> keyword_map
— : map<unsigned int, string> token_map

Previous: Maps Scan_Parse, Up: Namespace Scan_Parse

11.4 Functions

Next: , Previous: Functions Scan_Parse, Up: Functions Scan_Parse

11.4.1 Map Functions

— Function: int initialize_maps (void)
— Function: int show_keyword_map (Scanner_Type*)

Next: , Previous: Map Functions Scan_Parse, Up: Functions Scan_Parse

11.4.2 Parser Rule Functions

The functions described in this section are defined in prsrfncs.web.

Next: , Previous: Parser Rule Functions, Up: Parser Rule Functions
11.4.2.1 Functions for Variables

— Function: void* variable_func (void* v, char* name)

Next: , Previous: Functions for Variables Scan_Parse, Up: Parser Rule Functions
11.4.2.2 Functions for Declarations

— Function: Id_Node declare_variable_func (void* v,
const unsigned short type,
char* name)

Next: , Previous: Functions for Declarations Scan_Parse, Up: Parser Rule Functions
11.4.2.3 Functions for Assignments

— Function: void* query_assignment_func_0 (void* v,
void* object,
unsigned int assignment_type,
unsigned int arg_0,
unsigned int arg_1,
void* value,
bool negate)
— Function: int query_assignment_func_1 (Scanner_Node scanner_node,
Id_Node& curr_id_node,
void*& field_specifier,
int assignment_operator,
int negation_optional,
int match_term_optional,
void*& v,
int type)
— Function: int datetime_assignment_func_0 (void* v,
Date_Time_Node& curr_date_time_node,
int specifier,
int op,
void* val,
int type)
— Function: int datetime_assignment_func_1 (void* v,
Date_Time_Node& d,
int op,
void*& vec)

Previous: Functions for Assignments Scan_Parse, Up: Parser Rule Functions
11.4.2.4 Functions for Queries Scan_Parse

— Function: int start_local_database_query_func (void*)
— Function: int end_query_func (void*)

Previous: Parser Rule Functions, Up: Functions Scan_Parse

11.4.3 The Scanning Function yylex

yylex is the scanner or scanning function that reads code in the Scantest language from plain-text input files and passes tokens to the parser or parsing function yyparse. See Parser.

— Global function: int yylex (YYSTYPE* value, void* parameter)

Next: , Previous: Namespace Scan_Parse, Up: Top

12 Parser

Tokens are also known as terminal symbols. They are the basic building blocks of the Scantest language. Tokens are returned to the function yyparse by the function yylex. See The Scanning Function yylex.
— Global function: int yyparse (void* YYPARSE_PARAM)

This function is generated by GNU Bison from the parser input files:

  • Main parser file (parser.w)
  • Variables (variabls.w)
  • Declarations (declrtns.w)
  • Assignments (assign.w)
  • datasource expressions (dtsrcexp.w)
  • datetime expressions (dttmexp.w)
  • query expressions (queryexp.w)
  • string expressions (strings.w)
  • Commands (commands.w)

— Union declaration for YYSTYPE: int int_value
— : float float_value
— : char string_value[2048]
— : void* pointer_value

YYSTYPE is the type of the semantic value associated with a symbol or a rule. YYSTYPE can be a simple type or a union. In Scantest, it is a union. Each of the tokens and non-terminal symbols described below has a semantic value whose type is one of the members of this union.

Next: , Previous: Parser, Up: Parser

12.1 Punctuation

— Tokens: int_value AT_SYMBOL
— : int_value COMMA
— : int_value COLON
— : int_value HYPHEN
— : int_value UNDERLINE
— : int_value PERCENT
— : int_value PERIOD
— : int_value SEMI_COLON
— : int_value OPEN_PARENTHESIS
— : int_value CLOSE_PARENTHESIS
— : int_value OPEN_BRACKET
— : int_value CLOSE_BRACKET

Next: , Previous: Punctuation Tokens Parser, Up: Parser

12.2 General

— Token: int_value CLEAR
— Pseudo-Token: No semantic value EMPTY

EMPTY is a pseudo-token that represents the absence of a symbol on the right-hand side of a parser rule.

Next: , Previous: General Parser, Up: Parser

12.3 Grouping

— Tokens: int_value START
— : int_value END

Next: , Previous: Grouping Parser, Up: Parser

12.4 Operators

Next: , Previous: Operators Parser, Up: Operators Parser

12.4.1 Arithmetical Operators

— Tokens: int_value PLUS
— : int_value MINUS
— : int_value TIMES
— : int_value DIVIDE

Previous: Arithmetical Operators Parser, Up: Operators Parser

12.4.2 Boolean Operators

— Tokens: int_value XOR
— : int_value NOT
— : int_value AND_NOT
— : int_value OR_NOT
— : int_value XOR_NOT
— Non-terminal Symbols: int_value and_or_and_not
— : int_value or_or_or_not
— : int_value xor_or_xor_not

Next: , Previous: Operators Parser, Up: Parser

12.5 Control

Next: , Previous: Control Parser, Up: Control Parser

12.5.1 Termination

— Tokens: int_value TERMINATE

Next: , Previous: Termination Parser, Up: Control Parser

12.5.2 Conditionals

— Tokens: int_value IF
— : int_value ELSE
— : int_value ELIF
— : int_value FI

Previous: Conditionals Parser, Up: Control Parser

12.5.3 Loops

— Tokens: int_value FOR
— : int_value DO
— : int_value WHILE
— : int_value AND
— : int_value OR

Next: , Previous: Control Parser, Up: Parser

12.6 Start Symbol

<program > → <statement list > TERMINATE

Next: , Previous: Start Symbol Parser, Up: Parser

12.7 Statements

— Non-terminal Symbols: (No semantic value) statement_list
— : (No semantic value) statement

<statement list > → EMPTY
| <statement list > <statement >
<statement > → <declaration> SEMI_COLON
| <assignment> SEMI_COLON
| <command> SEMI_COLON

Next: , Previous: Statements Parser, Up: Parser

12.8 Data Types

— Tokens: string_value STRING
— : int_value INTEGER
— : float_value FLOAT

Next: , Previous: Data Types Parser, Up: Parser

12.9 Variables

— Tokens: int_value VARIABLE
— : string_value VARIABLE_TEXT_SEGMENT
— : pointer_value NULL_TYPE
— : pointer_value DATASOURCE_TYPE
— : pointer_value DATETIME_TYPE
— : pointer_value QUERY_TYPE
— : pointer_value STRING_TYPE
— Non-terminal Symbols: pointer_value variable_name
— : string_value variable_segment_list
— : float_value subscript
— : pointer_value query_variable
— : pointer_value datasource_variable
— : pointer_value string_variable
— : pointer_value datetime_variable

<variable_name > → <variable_segment_list >
<variable_segment_list > → VARIABLE_TEXT_SEGMENT
| <variable_segment_list > VARIABLE_TEXT_SEGMENT
| <variable_segment_list > <subscript >
<subscript > → INTEGER
| FLOAT
| OPEN_BRACKET INTEGER CLOSE_BRACKET
| OPEN_BRACKET FLOAT CLOSE_BRACKET
<query_variable > → VARIABLE QUERY_TYPE
| <variable_name > QUERY_TYPE
<datasource_variable > → VARIABLE DATASOURCE_TYPE
| <variable_name > DATASOURCE_TYPE
<string_variable > → VARIABLE STRING_TYPE
| <variable_name > STRING_TYPE
<datetime_variable > → VARIABLE DATETIME_TYPE
| <variable_name > DATETIME_TYPE

Next: , Previous: Variables Parser, Up: Parser

12.10 Declarations

— Tokens: int_value DATASOURCE_DECLARATOR
— : int_value DATETIME_DECLARATOR
— : int_value STRING_DECLARATOR
— : int_value QUERY_DECLARATOR
— Non-terminal Symbols: int_value declaration
— : int_value query_declaration
— : int_value datasource_declaration
— : int_value string_declaration
— : int_value datetime_declaration
— : string_value variable_declaration_segment_list
— : int_value subscript_placeholder

<declaration > → <query declaration >
| <string declaration >
| <datasource declaration >
| <datetime declaration >
<variable declaration segment list > → VARIABLE_TEXT_SEGMENT
| <variable declaration segment list > VARIABLE_TEXT_SEGMENT
| <variable_declaration_segment_list > <subscript_placeholder >
<subscript_placeholder > → OPEN_BRACKET CLOSE_BRACKET
<query_declaration > → QUERY_DECLARATOR <variable_declaration_segment_list >
<datasource_declaration > → DATASOURCE_DECLARATOR <variable_declaration_segment_list >
<string_declaration > → STRING_DECLARATOR <variable_declaration_segment_list >
<datetime_declaration > → DATETIME_DECLARATOR <variable_declaration_segment_list >

Next: , Previous: Declarations Parser, Up: Parser

12.11 Assignments

— Tokens: int_value ASSIGN
— : int_value PLUS_ASSIGN
— : int_value MINUS_ASSIGN
— : int_value TIMES_ASSIGN
— : int_value DIVIDE_ASSIGN
— : int_value AND_ASSIGN
— : int_value OR_ASSIGN
— : int_value XOR_ASSIGN
— : int_value NOT_ASSIGN
— Non-terminal Symbols: int_value assignment
— : int_value negation_optional
— : int_value assign_or_plus_assign
— : int_value assignment_operator
— : pointer_value query_assignment
— : pointer_value datasource_assignment
— : string_value string_assignment
— : pointer_value datetime_assignment

<negation_optional > → EMPTY
| NOT
<match_term_optional > → EMPTY
| CONTAINS
| FREETEXT
| LIKE
<assign_or_plus_assign > → ASSIGN
| PLUS_ASSIGN
<assignment_operator > → ASSIGN
| PLUS_ASSIGN
| OR_ASSIGN
| XOR_ASSIGN
| NOT_ASSIGN

<assignment > → <query_assignment >
| <datasource_assignment >
| <string_assignment >
| <datetime_assignment >

<field_specifier > → <field_designator > <field_qualifier_list >

<field_designator > → ACCESS_NUMBER
| AUTHOR
| BIBLIOGRAPHIC_TYPE
| CALL_NUMBER
| CLASSIFICATION
| COMPANY
| CONTENT_SUMMARY
| CONTRIBUTOR
| CREATOR
| DATABASE_PROVIDER
| DESCRIPTION
| EXEMPLAR_PRODUCTION_NUMBER
| IDENTIFIER
| INSTITUTION
| LANGUAGE
| MAIN_CANONICAL_TITLE
| PERMUTATION_PATTERN
| PERSON
| PHYSICAL_DESCRIPTION
| PUBLISHER
| RECORD
| REMOTE_ACCESS
| RIGHTS
| SOURCE
| SUBJECT
| SUPERORDINATE_ENTITIES
| TITLE
| TYPE
<field_qualifier_list > → EMPTY
<field_qualifier_list > → <field_qualifier_list > PERIOD <field_qualifier >
<field_qualifier > → ID
| SURNAME
| GIVEN_NAME
| PREFIX
| ELN_ORIGINAL_ENTRY
| ELN_MOST_RECENT_CHANGE
| ELN_STATUS_CHANGE
| IDENTIFICATION_NUMBER
| DATE_ORIGINAL_ENTRY
| DATE_MOST_RECENT_CHANGE
| DATE_STATUS_CHANGE
| SOURCE_ID
| YEAR_APPEARANCE_BEGIN
| YEAR_APPEARANCE_END
| YEAR_APPEARANCE_RAK_WB
| YEAR_APPEARANCE_ORIGINAL

<datasource_assignment > → <datasource_variable > ASSIGN <datasource_expression >
| <datasource_variable > ASSIGN DBT
| <datasource_variable > ASSIGN GBV_GVK
| <datasource_variable > ASSIGN TIMMS
| <datasource_variable > ASSIGN DATASOURCE_FILE

<string_assignment > → <string_variable > ASSIGN <string_expression >
| <string_variable > ASSIGN TEX <query_expression >
| <string_variable > ASSIGN SQL OAI <query_expression >
| <string_variable > ASSIGN SQL PICA <query_expression >

<datetime_assignment > → <datetime_variable > ASSIGN <datetime_expression >
| <datetime_variable > COLON <datetime_specifier > <assignment_operator > INTEGER
| <datetime_variable > COLON <datetime_specifier > <assignment_operator > FLOAT

<datetime_specifier > → YEAR_RANGE_BEGIN
| YEAR_RANGE_END
| YEAR
| MONTH
| DAY
| HOUR
| MINUTE
| SECOND
<query_assignment > → <query_variable > ASSIGN <query_expression >
| <query_variable > <assign_or_plus_assign > LOCAL DATABASE
| <query_variable > <assign_or_plus_assign > LOCAL SERVER
| <query_variable > <assign_or_plus_assign > REMOTE DATABASE
| <query_variable > <assign_or_plus_assign > REMOTE SERVER
| <query_variable > COLON <field_specifier > <assignment_operator >
<negation_optional > <match_term_optional > <query_expression >
| <query_variable > COLON <field_specifier > <assignment_operator >
<negation_optional > <match_term_optional > <datetime_expression >
| <query_variable > COLON <field_specifier > <assignment_operator >
<negation_optional > <match_term_optional > <query_expression >
| <query_variable > COLON <field_specifier > <assignment_operator >
<negation_optional > <match_term_optional > <datetime_expression >

Next: , Previous: Assignments Parser, Up: Parser

12.12 Commands

— Non-terminal Symbols: int_value command

<message_or_errmessage > → MESSAGE
| ERRMESSAGE

<command > → <message_or_errmessage > STRING
| PAUSE
| SHOW <query_variable >
| SHOW <datasource_variable >
| SHOW <datetime_variable >
| SHOW <string_expression >
| OUTPUT TEX <string_expression >

Next: , Previous: Commands Parser, Up: Parser

12.13 Datasource Expressions

— Tokens: int_value DATASOURCE_FILE
— : int_value LOCAL
— : int_value REMOTE
— : int_value DATABASE
— : int_value SERVER
— : int_value DBT
— : int_value GBV_GVK
— : int_value TIMMS
— Non-terminal Symbols: pointer_value datasource_primary
— : pointer_value datasource_secondary
— : pointer_value datasource_tertiary
— : pointer_value datasource_expression

<datasource_primary > → <datasource_variable >
| OPEN_PARENTHESIS datasource_expression CLOSE_PARENTHESIS
<datasource_secondary > → datasource_primary
<datasource_tertiary > → <datasource_secondary >
<datasource_expression > → <datasource_tertiary >

Next: , Previous: Datasource Expressions Parser, Up: Parser

12.14 Datetime Expressions

— Tokens: int_value YEAR_RANGE_BEGIN
— : int_value YEAR_RANGE_END
— : int_value YEAR
— : int_value MONTH
— : int_value DAY
— : int_value HOUR
— : int_value MINUTE
— : int_value SECOND
— Non-terminal Symbols: int_value datetime_specifier
— : pointer_value datetime_primary
— : pointer_value datetime_secondary
— : pointer_value datetime_tertiary
— : pointer_value datetime_expression
— : pointer_value datetime_element_list

<datetime_primary > → <datetime_variable >
| OPEN_PARENTHESIS <datetime_expression > CLOSE_PARENTHESIS
| <datetime_element_list >
<datetime_secondary > → <datetime_primary >
<datetime_tertiary > → <datetime_secondary >
<datetime_expression > → <datetime_tertiary >

<datetime_element_list > → INTEGER COLON
| FLOAT COLON
| <datetime_element_list > INTEGER COLON
| <datetime_element_list > FLOAT COLON

Next: , Previous: Datetime Expressions Parser, Up: Parser

12.15 Query Expressions

— Tokens: int_value CONTAINS
— : int_value FREETEXT
— : int_value LIKE
— Non-terminal Symbols: int_value match_term_optional
— : pointer_value query_primary
— : pointer_value query_secondary
— : pointer_value query_tertiary
— : pointer_value query_expression

<query_primary > → <query_variable >
| OPEN_PARENTHESIS <query_expression > CLOSE_PARENTHESIS
| STRING
| INTEGER
| FLOAT
<query_secondary > → <query_primary >
| <query_secondary > <and_or_and_not > <query_primary >
<query_tertiary > → <query_secondary >
| <query_tertiary > <xor_or_xor_not > <query_secondary >
<query_expression > → <query_tertiary >
| <query_expression > <or_or_or_not > <query_tertiary >

<and_or_and_not > → AND
| AND_NOT
<or_or_or_not > → OR
| OR_NOT
<xor_or_xor_not > → XOR
| → XOR_NOT

Next: , Previous: Query Expressions Parser, Up: Parser

12.16 String Expressions

— Tokens: int_value OAI
— : int_value PICA
— : int_value TEX
— : int_value SQL
— Non-terminal Symbols: string_value string_primary
— : string_value string_secondary
— : string_value string_tertiary
— : string_value string_expression

string_primary → string_variable string_primary → STRING string_primary → OPEN_PARENTHESIS string_expression CLOSE_PARENTHESIS string_secondary → string_primary string_tertiary → string_secondary string_expression → string_tertiary <string_primary > → <string_variable >
| STRING
| OPEN_PARENTHESIS <string_expression > CLOSE_PARENTHESIS
<string_secondary > → <string_primary >
<string_tertiary > → <string_secondary >
<string_expression > → <string_tertiary >

Next: , Previous: String Expressions Parser, Up: Parser

12.17 Output

— Tokens: int_value OUTPUT
— : int_value MESSAGE
— : int_value ERRMESSAGE
— : int_value PAUSE
— : int_value SHOW
— Non-terminal Symbols: int_value message_or_errmessage

Previous: Output Parser, Up: Parser

12.18 Database Tables and Columns

Next: , Previous: Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.1 General

— Tokens: int_value ID
— : int_value ELN_ORIGINAL_ENTRY
— : int_value ELN_MOST_RECENT_CHANGE
— : int_value ELN_STATUS_CHANGE
— : int_value IDENTIFICATION_NUMBER
— : int_value DATE_ORIGINAL_ENTRY
— : int_value DATE_MOST_RECENT_CHANGE
— : int_value DATE_STATUS_CHANGE
— : int_value SOURCE_ID
— : int_value YEAR_APPEARANCE_BEGIN
— : int_value YEAR_APPEARANCE_END
— : int_value YEAR_APPEARANCE_RAK_WB
— : int_value YEAR_APPEARANCE_ORIGINAL
— Non-terminal Symbols: pointer_value field_specifier
— : int_value field_designator
— : pointer_value field_qualifier_list
— : int_value field_qualifier

Next: , Previous: General Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.2 Names

— Tokens: int_value GIVEN_NAME
— : int_value PREFIX
— : int_value SURNAME

Next: , Previous: Names Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.3 Access_Number

— Tokens: int_value ACCESS_NUMBER

Next: , Previous: Access_Number Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.4 Author

— Tokens: int_value AUTHOR
— : int_value AUTHOR_GIVEN_NAME
— : int_value AUTHOR_PREFIX
— : int_value AUTHOR_SURNAME

Next: , Previous: Author Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.5 Bibliographic_Type

— Tokens: int_value BIBLIOGRAPHIC_TYPE

Next: , Previous: Bibliographic_Type Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.6 Call_Number

— Tokens: int_value CALL_NUMBER

Next: , Previous: Call_Number Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.7 Classification

— Tokens: int_value CLASSIFICATION

Next: , Previous: Classification Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.8 Company

— Tokens: int_value COMPANY

Next: , Previous: Company Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.9 Content_Summary

— Tokens: int_value CONTENT_SUMMARY

Next: , Previous: Content_Summary Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.10 Contributor

— Tokens: int_value CONTRIBUTOR
— : int_value CONTRIBUTOR_GIVEN_NAME
— : int_value CONTRIBUTOR_PREFIX
— : int_value CONTRIBUTOR_SURNAME

Next: , Previous: Contributor Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.11 Creator

— Tokens: int_value CREATOR

Next: , Previous: Creator Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.12 Database_Provider

— Tokens: int_value DATABASE_PROVIDER

Next: , Previous: Database_Provider Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.13 Description

— Tokens: int_value DESCRIPTION

Next: , Previous: Description Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.14 Exemplar_Production_Number

— Tokens: int_value EXEMPLAR_PRODUCTION_NUMBER

Next: , Previous: Exemplar_Production_Number Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.15 Identifier

— Tokens: int_value IDENTIFIER

Next: , Previous: Identifier Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.16 Institution

— Tokens: int_value INSTITUTION

Next: , Previous: Institution Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.17 Language

— Tokens: int_value LANGUAGE

Next: , Previous: Language Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.18 Main_Canonical_Title

— Tokens: int_value MAIN_CANONICAL_TITLE

Next: , Previous: Main_Canonical_Title Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.19 Permutation_Pattern

— Tokens: int_value PERMUTATION_PATTERN

Next: , Previous: Permutation_Pattern Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.20 Person

— Tokens: int_value PERSON

Next: , Previous: Person Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.21 Physical_Description

— Tokens: int_value PHYSICAL_DESCRIPTION

Next: , Previous: Physical_Description Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.22 Publisher

— Tokens: int_value PUBLISHER

Next: , Previous: Publisher Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.23 Records

— Tokens: int_value RECORD

Next: , Previous: Records Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.24 Remote_Access

— Tokens: int_value REMOTE_ACCESS

Next: , Previous: Remote_Access Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.25 Rights

— Tokens: int_value RIGHTS

Next: , Previous: Rights Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.26 Source

— Tokens: int_value SOURCE

Next: , Previous: Source Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.27 Subject

— Tokens: int_value SUBJECT

Next: , Previous: Subject Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.28 Superordinate_Entities

— Tokens: int_value SUPERORDINATE_ENTITIES

Next: , Previous: Superordinate_Entities Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.29 Title

— Tokens: int_value TITLE

Previous: Title Database Tables and Columns Parser, Up: Database Tables and Columns Parser

12.18.30 Type

— Tokens: int_value TYPE

Next: , Previous: Parser, Up: Top

Glossary

Next: , Previous: Glossary, Up: Top

Abbreviations

Next: , Previous: Abbreviations, Up: Top

Bibliography

Next: , Previous: Bibliography, Up: Top

Concept Index

Next: , Previous: Concept Index, Up: Top

Variable Index

Next: , Previous: Variable Index, Up: Top

Data Type Index

Next: , Previous: Data Type Index, Up: Top

Function Index

Next: , Previous: Function Index, Up: Top

Parser Token Index

Next: , Previous: Parser Token Index, Up: Top

Parser Non-Terminal Symbol Index

Next: , Previous: Parser Non-Terminal Symbol Index, Up: Top

Parser Rule Index

Next: , Previous: Parser Rule Index, Up: Top

Filename Index

Next: , Previous: Filename Index, Up: Top

Appendix A GNU Free Documentation License

Version 1.2, November 2002

 Copyright © 2000,2001,2002 Free Software Foundation, Inc.
 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

  1. PREAMBLE The purpose of this License is to make a manual, textbook, or other functional and useful document free in the sense of freedom: to assure everyone the effective freedom to copy and redistribute it, with or without modifying it, either commercially or noncommercially. Secondarily, this License preserves for the author and publisher a way to get credit for their work, while not being considered responsible for modifications made by others. This License is a kind of “copyleft”, which means that derivative works of the document must themselves be free in the same sense. It complements the GNU General Public License, which is a copyleft license designed for free software. We have designed this License in order to use it for manuals for free software, because free software needs free documentation: a free program should come with manuals providing the same freedoms that the software does. But this License is not limited to software manuals; it can be used for any textual work, regardless of subject matter or whether it is published as a printed book. We recommend this License principally for works whose purpose is instruction or reference.
  2. APPLICABILITY AND DEFINITIONS This License applies to any manual or other work, in any medium, that contains a notice placed by the copyright holder saying it can be distributed under the terms of this License. Such a notice grants a world-wide, royalty-free license, unlimited in duration, to use that work under the conditions stated herein. The “Document”, below, refers to any such manual or work. Any member of the public is a licensee, and is addressed as “you”. You accept the license if you copy, modify or distribute the work in a way requiring permission under copyright law. A “Modified Version” of the Document means any work containing the Document or a portion of it, either copied verbatim, or with modifications and/or translated into another language. A “Secondary Section” is a named appendix or a front-matter section of the Document that deals exclusively with the relationship of the publishers or authors of the Document to the Document's overall subject (or to related matters) and contains nothing that could fall directly within that overall subject. (Thus, if the Document is in part a textbook of mathematics, a Secondary Section may not explain any mathematics.) The relationship could be a matter of historical connection with the subject or with related matters, or of legal, commercial, philosophical, ethical or political position regarding them. The “Invariant Sections” are certain Secondary Sections whose titles are designated, as being those of Invariant Sections, in the notice that says that the Document is released under this License. If a section does not fit the above definition of Secondary then it is not allowed to be designated as Invariant. The Document may contain zero Invariant Sections. If the Document does not identify any Invariant Sections then there are none. The “Cover Texts” are certain short passages of text that are listed, as Front-Cover Texts or Back-Cover Texts, in the notice that says that the Document is released under this License. A Front-Cover Text may be at most 5 words, and a Back-Cover Text may be at most 25 words. A “Transparent” copy of the Document means a machine-readable copy, represented in a format whose specification is available to the general public, that is suitable for revising the document straightforwardly with generic text editors or (for images composed of pixels) generic paint programs or (for drawings) some widely available drawing editor, and that is suitable for input to text formatters or for automatic translation to a variety of formats suitable for input to text formatters. A copy made in an otherwise Transparent file format whose markup, or absence of markup, has been arranged to thwart or discourage subsequent modification by readers is not Transparent. An image format is not Transparent if used for any substantial amount of text. A copy that is not “Transparent” is called “Opaque”. Examples of suitable formats for Transparent copies include plain ascii without markup, Texinfo input format, LaTeX input format, SGML or XML using a publicly available DTD, and standard-conforming simple HTML, PostScript or PDF designed for human modification. Examples of transparent image formats include PNG, XCF and JPG. Opaque formats include proprietary formats that can be read and edited only by proprietary word processors, SGML or XML for which the DTD and/or processing tools are not generally available, and the machine-generated HTML, PostScript or PDF produced by some word processors for output purposes only. The “Title Page” means, for a printed book, the title page itself, plus such following pages as are needed to hold, legibly, the material this License requires to appear in the title page. For works in formats which do not have any title page as such, “Title Page” means the text near the most prominent appearance of the work's title, preceding the beginning of the body of the text. A section “Entitled XYZ” means a named subunit of the Document whose title either is precisely XYZ or contains XYZ in parentheses following text that translates XYZ in another language. (Here XYZ stands for a specific section name mentioned below, such as “Acknowledgements”, “Dedications”, “Endorsements”, or “History”.) To “Preserve the Title” of such a section when you modify the Document means that it remains a section “Entitled XYZ” according to this definition. The Document may include Warranty Disclaimers next to the notice which states that this License applies to the Document. These Warranty Disclaimers are considered to be included by reference in this License, but only as regards disclaiming warranties: any other implication that these Warranty Disclaimers may have is void and has no effect on the meaning of this License.
  3. VERBATIM COPYING You may copy and distribute the Document in any medium, either commercially or noncommercially, provided that this License, the copyright notices, and the license notice saying this License applies to the Document are reproduced in all copies, and that you add no other conditions whatsoever to those of this License. You may not use technical measures to obstruct or control the reading or further copying of the copies you make or distribute. However, you may accept compensation in exchange for copies. If you distribute a large enough number of copies you must also follow the conditions in section 3. You may also lend copies, under the same conditions stated above, and you may publicly display copies.
  4. COPYING IN QUANTITY If you publish printed copies (or copies in media that commonly have printed covers) of the Document, numbering more than 100, and the Document's license notice requires Cover Texts, you must enclose the copies in covers that carry, clearly and legibly, all these Cover Texts: Front-Cover Texts on the front cover, and Back-Cover Texts on the back cover. Both covers must also clearly and legibly identify you as the publisher of these copies. The front cover must present the full title with all words of the title equally prominent and visible. You may add other material on the covers in addition. Copying with changes limited to the covers, as long as they preserve the title of the Document and satisfy these conditions, can be treated as verbatim copying in other respects. If the required texts for either cover are too voluminous to fit legibly, you should put the first ones listed (as many as fit reasonably) on the actual cover, and continue the rest onto adjacent pages. If you publish or distribute Opaque copies of the Document numbering more than 100, you must either include a machine-readable Transparent copy along with each Opaque copy, or state in or with each Opaque copy a computer-network location from which the general network-using public has access to download using public-standard network protocols a complete Transparent copy of the Document, free of added material. If you use the latter option, you must take reasonably prudent steps, when you begin distribution of Opaque copies in quantity, to ensure that this Transparent copy will remain thus accessible at the stated location until at least one year after the last time you distribute an Opaque copy (directly or through your agents or retailers) of that edition to the public. It is requested, but not required, that you contact the authors of the Document well before redistributing any large number of copies, to give them a chance to provide you with an updated version of the Document.
  5. MODIFICATIONS You may copy and distribute a Modified Version of the Document under the conditions of sections 2 and 3 above, provided that you release the Modified Version under precisely this License, with the Modified Version filling the role of the Document, thus licensing distribution and modification of the Modified Version to whoever possesses a copy of it. In addition, you must do these things in the Modified Version:
    1. Use in the Title Page (and on the covers, if any) a title distinct from that of the Document, and from those of previous versions (which should, if there were any, be listed in the History section of the Document). You may use the same title as a previous version if the original publisher of that version gives permission.
    2. List on the Title Page, as authors, one or more persons or entities responsible for authorship of the modifications in the Modified Version, together with at least five of the principal authors of the Document (all of its principal authors, if it has fewer than five), unless they release you from this requirement.
    3. State on the Title page the name of the publisher of the Modified Version, as the publisher.
    4. Preserve all the copyright notices of the Document.
    5. Add an appropriate copyright notice for your modifications adjacent to the other copyright notices.
    6. Include, immediately after the copyright notices, a license notice giving the public permission to use the Modified Version under the terms of this License, in the form shown in the Addendum below.
    7. Preserve in that license notice the full lists of Invariant Sections and required Cover Texts given in the Document's license notice.
    8. Include an unaltered copy of this License.
    9. Preserve the section Entitled “History”, Preserve its Title, and add to it an item stating at least the title, year, new authors, and publisher of the Modified Version as given on the Title Page. If there is no section Entitled “History” in the Document, create one stating the title, year, authors, and publisher of the Document as given on its Title Page, then add an item describing the Modified Version as stated in the previous sentence.
    10. Preserve the network location, if any, given in the Document for public access to a Transparent copy of the Document, and likewise the network locations given in the Document for previous versions it was based on. These may be placed in the “History” section. You may omit a network location for a work that was published at least four years before the Document itself, or if the original publisher of the version it refers to gives permission.
    11. For any section Entitled “Acknowledgements” or “Dedications”, Preserve the Title of the section, and preserve in the section all the substance and tone of each of the contributor acknowledgements and/or dedications given therein.
    12. Preserve all the Invariant Sections of the Document, unaltered in their text and in their titles. Section numbers or the equivalent are not considered part of the section titles.
    13. Delete any section Entitled “Endorsements”. Such a section may not be included in the Modified Version.
    14. Do not retitle any existing section to be Entitled “Endorsements” or to conflict in title with any Invariant Section.
    15. Preserve any Warranty Disclaimers.
    If the Modified Version includes new front-matter sections or appendices that qualify as Secondary Sections and contain no material copied from the Document, you may at your option designate some or all of these sections as invariant. To do this, add their titles to the list of Invariant Sections in the Modified Version's license notice. These titles must be distinct from any other section titles. You may add a section Entitled “Endorsements”, provided it contains nothing but endorsements of your Modified Version by various parties—for example, statements of peer review or that the text has been approved by an organization as the authoritative definition of a standard. You may add a passage of up to five words as a Front-Cover Text, and a passage of up to 25 words as a Back-Cover Text, to the end of the list of Cover Texts in the Modified Version. Only one passage of Front-Cover Text and one of Back-Cover Text may be added by (or through arrangements made by) any one entity. If the Document already includes a cover text for the same cover, previously added by you or by arrangement made by the same entity you are acting on behalf of, you may not add another; but you may replace the old one, on explicit permission from the previous publisher that added the old one. The author(s) and publisher(s) of the Document do not by this License give permission to use their names for publicity for or to assert or imply endorsement of any Modified Version.
  6. COMBINING DOCUMENTS You may combine the Document with other documents released under this License, under the terms defined in section 4 above for modified versions, provided that you include in the combination all of the Invariant Sections of all of the original documents, unmodified, and list them all as Invariant Sections of your combined work in its license notice, and that you preserve all their Warranty Disclaimers. The combined work need only contain one copy of this License, and multiple identical Invariant Sections may be replaced with a single copy. If there are multiple Invariant Sections with the same name but different contents, make the title of each such section unique by adding at the end of it, in parentheses, the name of the original author or publisher of that section if known, or else a unique number. Make the same adjustment to the section titles in the list of Invariant Sections in the license notice of the combined work. In the combination, you must combine any sections Entitled “History” in the various original documents, forming one section Entitled “History”; likewise combine any sections Entitled “Acknowledgements”, and any sections Entitled “Dedications”. You must delete all sections Entitled “Endorsements.”
  7. COLLECTIONS OF DOCUMENTS You may make a collection consisting of the Document and other documents released under this License, and replace the individual copies of this License in the various documents with a single copy that is included in the collection, provided that you follow the rules of this License for verbatim copying of each of the documents in all other respects. You may extract a single document from such a collection, and distribute it individually under this License, provided you insert a copy of this License into the extracted document, and follow this License in all other respects regarding verbatim copying of that document.
  8. AGGREGATION WITH INDEPENDENT WORKS A compilation of the Document or its derivatives with other separate and independent documents or works, in or on a volume of a storage or distribution medium, is called an “aggregate” if the copyright resulting from the compilation is not used to limit the legal rights of the compilation's users beyond what the individual works permit. When the Document is included in an aggregate, this License does not apply to the other works in the aggregate which are not themselves derivative works of the Document. If the Cover Text requirement of section 3 is applicable to these copies of the Document, then if the Document is less than one half of the entire aggregate, the Document's Cover Texts may be placed on covers that bracket the Document within the aggregate, or the electronic equivalent of covers if the Document is in electronic form. Otherwise they must appear on printed covers that bracket the whole aggregate.
  9. TRANSLATION Translation is considered a kind of modification, so you may distribute translations of the Document under the terms of section 4. Replacing Invariant Sections with translations requires special permission from their copyright holders, but you may include translations of some or all Invariant Sections in addition to the original versions of these Invariant Sections. You may include a translation of this License, and all the license notices in the Document, and any Warranty Disclaimers, provided that you also include the original English version of this License and the original versions of those notices and disclaimers. In case of a disagreement between the translation and the original version of this License or a notice or disclaimer, the original version will prevail. If a section in the Document is Entitled “Acknowledgements”, “Dedications”, or “History”, the requirement (section 4) to Preserve its Title (section 1) will typically require changing the actual title.
  10. TERMINATION You may not copy, modify, sublicense, or distribute the Document except as expressly provided for under this License. Any other attempt to copy, modify, sublicense or distribute the Document is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance.
  11. FUTURE REVISIONS OF THIS LICENSE The Free Software Foundation may publish new, revised versions of the GNU Free Documentation License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. See http://www.gnu.org/copyleft/. Each version of the License is given a distinguishing version number. If the Document specifies that a particular numbered version of this License “or any later version” applies to it, you have the option of following the terms and conditions either of that specified version or of any later version that has been published (not as a draft) by the Free Software Foundation. If the Document does not specify a version number of this License, you may choose any version ever published (not as a draft) by the Free Software Foundation.

A.0.1 ADDENDUM: How to use this License for your documents

To use this License in a document you have written, include a copy of the License in the document and put the following copyright and license notices just after the title page: 

 Copyright (C) year your name.
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.2
 or any later version published by the Free Software Foundation;
 with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
 Texts. A copy of the license is included in the section entitled ``GNU
 Free Documentation License''.

If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, replace the “with...Texts.” line with this: 

 with the Invariant Sections being list their titles, with
 the Front-Cover Texts being list, and with the Back-Cover Texts
 being list.

If you have Invariant Sections without Cover Texts, or some other combination of the three, merge those two alternatives to suit the situation. If your document contains nontrivial examples of program code, we recommend releasing these examples in parallel under your choice of free software license, such as the GNU General Public License, to permit their use in free software.

Previous: GNU Free Documentation License, Up: Top

Appendix B GNU General Public License

Version 2, June 1991

 Copyright © 1989, 1991 Free Software Foundation, Inc.
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

Preamble

The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software—to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Lesser General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software. Also, for each author's protection and ours, we want to make certain that everyone understands that there is no warranty for this free software. If the software is modified by someone else and passed on, we want its recipients to know that what they have is not the original, so that any problems introduced by others will not reflect on the original authors' reputations. Finally, any free program is threatened constantly by software patents. We wish to avoid the danger that redistributors of a free program will individually obtain patent licenses, in effect making the program proprietary. To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow.

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  1. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The “Program”, below, refers to any such program or work, and a “work based on the Program” means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term “modification”.) Each licensee is addressed as “you”. Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. The act of running the Program is not restricted, and the output from the Program is covered only if its contents constitute a work based on the Program (independent of having been made by running the Program). Whether that is true depends on what the Program does.
  2. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to the absence of any warranty; and give any other recipients of the Program a copy of this License along with the Program. You may charge a fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee.
  3. You may modify your copy or copies of the Program or any portion of it, thus forming a work based on the Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions:
    1. You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change.
    2. You must cause any work that you distribute or publish, that in whole or in part contains or is derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties under the terms of this License.
    3. If the modified program normally reads commands interactively when run, you must cause it, when started running for such interactive use in the most ordinary way, to print or display an announcement including an appropriate copyright notice and a notice that there is no warranty (or else, saying that you provide a warranty) and that users may redistribute the program under these conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.)
    These requirements apply to the modified work as a whole. If identifiable sections of that work are not derived from the Program, and can be reasonably considered independent and separate works in themselves, then this License, and its terms, do not apply to those sections when you distribute them as separate works. But when you distribute the same sections as part of a whole which is a work based on the Program, the distribution of the whole must be on the terms of this License, whose permissions for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote it. Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely by you; rather, the intent is to exercise the right to control the distribution of derivative or collective works based on the Program. In addition, mere aggregation of another work not based on the Program with the Program (or with a work based on the Program) on a volume of a storage or distribution medium does not bring the other work under the scope of this License.
  4. You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following:
    1. Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or,
    2. Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or,
    3. Accompany it with the information you received as to the offer to distribute corresponding source code. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form with such an offer, in accord with Subsection b above.)
    The source code for a work means the preferred form of the work for making modifications to it. For an executable work, complete source code means all the source code for all modules it contains, plus any associated interface definition files, plus the scripts used to control compilation and installation of the executable. However, as a special exception, the source code distributed need not include anything that is normally distributed (in either source or binary form) with the major components (compiler, kernel, and so on) of the operating system on which the executable runs, unless that component itself accompanies the executable. If distribution of executable or object code is made by offering access to copy from a designated place, then offering equivalent access to copy the source code from the same place counts as distribution of the source code, even though third parties are not compelled to copy the source along with the object code.
  5. You may not copy, modify, sublicense, or distribute the Program except as expressly provided under this License. Any attempt otherwise to copy, modify, sublicense or distribute the Program is void, and will automatically terminate your rights under this License. However, parties who have received copies, or rights, from you under this License will not have their licenses terminated so long as such parties remain in full compliance.
  6. You are not required to accept this License, since you have not signed it. However, nothing else grants you permission to modify or distribute the Program or its derivative works. These actions are prohibited by law if you do not accept this License. Therefore, by modifying or distributing the Program (or any work based on the Program), you indicate your acceptance of this License to do so, and all its terms and conditions for copying, distributing or modifying the Program or works based on it.
  7. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein. You are not responsible for enforcing compliance by third parties to this License.
  8. If, as a consequence of a court judgment or allegation of patent infringement or for any other reason (not limited to patent issues), conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot distribute so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not distribute the Program at all. For example, if a patent license would not permit royalty-free redistribution of the Program by all those who receive copies directly or indirectly through you, then the only way you could satisfy both it and this License would be to refrain entirely from distribution of the Program. If any portion of this section is held invalid or unenforceable under any particular circumstance, the balance of the section is intended to apply and the section as a whole is intended to apply in other circumstances. It is not the purpose of this section to induce you to infringe any patents or other property right claims or to contest validity of any such claims; this section has the sole purpose of protecting the integrity of the free software distribution system, which is implemented by public license practices. Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice. This section is intended to make thoroughly clear what is believed to be a consequence of the rest of this License.
  9. If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License.
  10. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and “any later version”, you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation.
  11. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally.
  12. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  13. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

Appendix: How to Apply These Terms to Your New Programs

If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found. 

 one line to give the program's name and a brief idea of what it does.
 Copyright (C) yyyy name of author
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: 

 Gnomovision version 69, Copyright (C) year name of author
 Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
 This is free software, and you are welcome to redistribute it
 under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items—whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a “copyright disclaimer” for the program, if necessary. Here is a sample; alter the names: 

 Yoyodyne, Inc., hereby disclaims all copyright interest in the program
 `Gnomovision' (which makes passes at compilers) written by James Hacker.
 
 signature of Ty Coon, 1 April 1989
 Ty Coon, President of Vice

This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License.

AltStyle によって変換されたページ (->オリジナル) /