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Man Pages


Manual Reference Pages  -  CFG_ADD_PROPERTY (3)

NAME

cfg_clear_property, cfg_add_property, cfg_remove_property - libcfg+ properties

CONTENTS

SYNOPSIS | SINGLE PROPERTY MANIPULATION

In this chapter are functions for manipulating with libcfg+ properties described. We are starting with functions manipulating with one property. These functions work also with virtual properties as well.

#include <cfg+.h>

int cfg_clear_property (CFG_CONTEXT con, enum cfg_property_type type);

int cfg_add_property (CFG_CONTEXT con, enum cfg_property_type type, char *str);

int cfg_remove_property (CFG_CONTEXT con, enum cfg_property_type type, char *str);

DESCRIPTION

Given the context con, the functions perform the following tasks:
o Function cfg_clear_property() clears the property type of any values it might have accumulated.
o Function cfg_add_property() adds a new value str to the property type.
o Function cfg_remove_property() removes a value str from the property type.
Note that, when you set some string of multi vals separator property, any whitespace you will use in that string will match any non-zero amount of whitespaces during parsing. For example if separator is one space, also tab will match, two or more spaces too, tab with space and so forth. It is similar behaviour like when option name contains one or more white characters.

Types of properties, which are passed to mentioned functions as parameter type, are described in following tables. They are divided into three types. The first one are Command line related properties that affects only command line. Than there are Configuration file related properties that affect only configuration file. The last type of properties are Virtual properties (also known as Shared properties). In example, they can affect both, comand line and configuration file, or set up quotation prefix and postfix in one call. They exist for simplyfication of real properties manipulation.

Here are properties for command line.

"COMMAND LINE RELATED PROPERTIES"
CFG_LINE_QUOTE_PREFIX ~ -- ~ command line quotation prefix
  For changing command line quotation prefix use this type. Note, that you probably want also set quotation postfix equivalent to this prefix. By default are no strings initialized, due to simple reason. Most from often used shells such as sh, bash, tcsh and zsh already contains quotation marks implementation so there is no need to do that thing also in libcfg+ library. Although this, you can set command line quotation characters by appropriate cfg_add_property() function call.
CFG_LINE_QUOTE_POSTFIX ~ -- ~ command line quotation postfix
  For changing command line quotation postfix use this type. Note, that you probably want also set quotation prefix equivalent to this postfix. By default is of course also nothing initialized due to same reasons as it is in CFG_LINE_QUOTE_POSTFIX case.
CFG_LINE_STOP_STRING ~ -- ~ command line stop string
  For changing command line stop string use this type. Set this property if you want to stop parsing on specified string which occurs on command line. Error code CFG_ERROR_STOP_STR_FOUND is returned from parsing function to determine this event. By default is nothing initialized.
CFG_LINE_SHORT_OPTION_PREFIX ~ -- ~ command line short option prefix
  For changing command line short option prefix use this type. Default value is of course single dash (-), because it is most offten used in applications. You will probably don’t need to redefine this property.
CFG_LINE_LONG_OPTION_PREFIX ~ -- ~ command line short option prefix
  For changing command line long option prefix use this type. Default value is of course double dash (--), because it is most offten used in applications. You will probably don’t need to redefine this property.
CFG_LINE_NORMAL_MULTI_VALS_SEPARATOR ~ -- ~ normal command line multi values separator
  For changing normal command line multi values separators use this type. Multi values separators are strings used for separation option values initialized with one argument. For example if separator is comma, one command line argument will be similar to this: --multi=val1,val2,val3. Option must have CFG_MULTI_SEPARATED flag set. By default are comma (,) and semicolon (;) initialized.
CFG_LINE_LEFTOVER_MULTI_VALS_SEPARATOR ~ -- ~ leftover command line multi values separator
  For changing leftover command line multi values separators use this type. Explanation is the same as for previous type with difference, that this property affects only leftover arguments (arguments left on the command line without any option that are stored into option with CFG_LEFTOVER_ARGS type). By default is nothing initialized.
CFG_LINE_OPTION_ARG_SEPARATOR ~ -- ~ command line option argument separator
  For changing command line option argument separator use this type. Option argument separators are strings used to separate option and its argument. By default is equal sign (=) character used. For example --option=argument. Note that on command line argument can be initialized also as following string with no need of separator usage (like this: --option argument).
Here are properties for configuration file.
"CONFIGURATION FILE RELATED PROPERTIES"
CFG_FILE_QUOTE_PREFIX ~ -- ~ configuration file quotation prefix
  For changing configuration file quotation prefix use this type. Note, that you probably want also set quotation postfix equivalent to this prefix. By default are standart quotation characters, apostrophes (’) and inverted commans ("), initialized (also for postfixes).
CFG_FILE_QUOTE_POSTFIX ~ -- ~ configuration file quotation postfix
  For changing configuration file quotation postfix use this type. Note, that you probably want also set quotation prefix equivalent to this postfix. By default are standart quotation characters, apostrophes (’) and inverted commans ("), initialized (also for prefixes).
CFG_FILE_STOP_PREFIX ~ -- ~ config file stop prefix
  For changing configuration file stop string use this type. Set this property if you want to stop parsing on specified string which occurs on configration file line. Error code CFG_ERROR_STOP_STR_FOUND is returned from parsing function to determine this event. By default is nothing initialized. We recommend you set this property to [ character, if you want to determine configuration section beginning (to stop parsing on section header).
CFG_FILE_COMMENT_PREFIX ~ -- ~ config file comment prefix
  For changing configuration comment prefix use this type. Lines started with one of these prefixes are skipped. By default are hash sign (#) and semicolon (;) initialized.
CFG_FILE_MULTI_LINE_POSTFIX ~ -- ~ config file multi line postfix
  For changing configuration file multi line postfix use this type. Multi line postfixes are strings used to determine situation, that line continues on next line. Multi lines are are concatenated to one and that is parsed. Multui line postfixes are removed from concatenated line. By deault is backslash (\) initialized.
CFG_FILE_NORMAL_MULTI_VALS_SEPARATOR ~ -- ~ normal config file multi values separator
  For changing normal configuration file multi values separators use this type. Multi values separators are strings used for separation option values initialized with one argument. For example if separator is comma one line in configuration fill will be similar to this: multi = val1,val2,val2. Option must have CFG_MULTI_SEPARATED flag set. By default are space, comma (,) and semicolon (;) initialized.
CFG_FILE_LEFTOVER_MULTI_VALS_SEPARATOR ~ -- ~ leftover config file multi values separator
  For changing leftover config file multi values separators use this type. Explanation is the same as for previous type with difference, that this property affects only leftover arguments (arguments left on the command line without any option that are stored into option with CFG_LEFTOVER_ARGS type). By default is space initialized. The goal is to get the similar functionality as it is in command line case, where leftover arguments are placed on command line and separated with spaces.
CFG_FILE_OPTION_ARG_SEPARATOR ~ -- ~ config file option argument separator
  For changing configuration file option argument separator use this type. Option argument separators are strings used to separate option and its argument. By default is equal sign (=) character used. For example option = argument.
Here are virtual (shared) properties. In description of every virtual will be only written which real properties are set. Please refer to Configuration file related properties table and Configuration file related properties table above for description of real properties.
"VIRTUAL PROPERTIES"
CFG_QUOTE
  CFG_LINE_QUOTE_PREFIX, CFG_LINE_QUOTE_POSTFIX, CFG_FILE_QUOTE_PREFIX, CFG_FILE_QUOTE_POSTFIX
CFG_LINE_QUOTE
  CFG_LINE_QUOTE_PREFIX, CFG_LINE_QUOTE_POSTFIX
CFG_FILE_QUOTE
  CFG_FILE_QUOTE_PREFIX, CFG_FILE_QUOTE_POSTFIX
CFG_QUOTE_PREFIX
  CFG_LINE_QUOTE_PREFIX, CFG_FILE_QUOTE_PREFIX
CFG_QUOTE_POSTFIX
  CFG_LINE_QUOTE_POSTFIX, CFG_FILE_QUOTE_POSTFIX
CFG_MULTI_VALS_SEPARATOR
  CFG_LINE_NORMAL_MULTI_VALS_SEPARATOR, CFG_LINE_LEFTOVER_MULTI_VALS_SEPARATOR, CFG_FILE_NORMAL_MULTI_VALS_SEPARATOR, CFG_FILE_LEFTOVER_MULTI_VALS_SEPARATOR
CFG_LINE_MULTI_VALS_SEPARATOR
  CFG_LINE_NORMAL_MULTI_VALS_SEPARATOR, CFG_LINE_LEFTOVER_MULTI_VALS_SEPARATOR
CFG_FILE_MULTI_VALS_SEPARATOR
  CFG_FILE_NORMAL_MULTI_VALS_SEPARATOR, CFG_FILE_LEFTOVER_MULTI_VALS_SEPARATOR
CFG_NORMAL_MULTI_VALS_SEPARATOR
  CFG_LINE_NORMAL_MULTI_VALS_SEPARATOR, CFG_FILE_NORMAL_MULTI_VALS_SEPARATOR
CFG_LEFTOVER_MULTI_VALS_SEPARATOR
  CFG_LINE_LEFTOVER_MULTI_VALS_SEPARATOR, CFG_FILE_LEFTOVER_MULTI_VALS_SEPARATOR
CFG_OPTION_ARG_SEPARATOR
  CFG_LINE_OPTION_ARG_SEPARATOR, CFG_FILE_OPTION_ARG_SEPARATOR

SYNOPSIS | MULTIPLE PROPERTIES MANIPULATION

Following functions allows you to set up multiple properties and/or its multiple values in one call. They work just like Virtual properties, but they are more flexible - you can specify arbitrary properties. All these functions use variable number of arguments.

#include <cfg+.h>

int cfg_clear_properties (CFG_CONTEXT con, enum cfg_property_type type, ...);

int cfg_add_properties (CFG_CONTEXT con, enum cfg_property_type type, char *str, ..., ...);

int cfg_remove_properties (CFG_CONTEXT con, enum cfg_property_type type, char *str, ..., ...);

int cfg_add_properties_type (CFG_CONTEXT con, enum cfg_property_type type, char *str, ...);

int cfg_remove_properties_type (CFG_CONTEXT con, enum cfg_property_type type, char *str, ...);

int cfg_add_properties_str (CFG_CONTEXT con, char *str, enum cfg_property_type type, ...);

int cfg_remove_properties_str (CFG_CONTEXT con, char *str, enum cfg_property_type type, ...);

DESCRIPTION

Given the context con the functions provide the following functionality:
o Function cfg_clear_properties() removes all values from the list of properties specified by the variable length parameter type. The property list must be terminated by the CFG_EOT constant.
o Functions cfg_add_properties() and cfg_remove_properties() give you the ability to add and remove multiple property/value pairs. The property/value pairs are designated by the variable length parameters type and str correspondingly. The property list must be terminated with CFG_EOT and the value list must be terminated with NULL.
o Functions cfg_add_properties_type() and cfg_remove_properties_type() add and remove multiple values specified by the variable parameter str to and from a single property denoted by type. The value list should be terminated with NULL.
o Functions cfg_add_properties_str() and cfg_remove_properties_str() add and remove the value denoted by str to and from the list of properties specified by the variable length parameter type. The property list must be terminated with CFG_EOT.
As with the single-property functions, all of these functions return 1 on success or 0 on not enough memory error.

SEE ALSO

You can get library overview, table of contents and such additional information info from main libcfg+(3) manpage by typing "man libcfg+" on UNIX-based systems. Also use this command to get information about authors, homepage and license conditions.
Search for    or go to Top of page |  Section 3 |  Main Index


libcfg+ 0.6.2 CFG_ADD_PROPERTY (3) 17 February 2004

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