mirror of
https://github.com/isledecomp/isle-portable.git
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444 lines
17 KiB
C
444 lines
17 KiB
C
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/*-------------------------------------------------------------------------*/
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/**
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@file iniparser.h
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@author N. Devillard
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@brief Parser for ini files.
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*/
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/*--------------------------------------------------------------------------*/
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#ifndef _INIPARSER_H_
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#define _INIPARSER_H_
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/*---------------------------------------------------------------------------
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Includes
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---------------------------------------------------------------------------*/
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#include "dictionary.h"
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/*-------------------------------------------------------------------------*/
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/**
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@brief Configure a function to receive the error messages.
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@param errback Function to call.
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By default, the error will be printed on stderr. If a null pointer is passed
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as errback the error callback will be switched back to default.
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*/
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/*--------------------------------------------------------------------------*/
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void iniparser_set_error_callback(int (*errback)(const char*, ...));
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get number of sections in a dictionary
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@param d Dictionary to examine
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@return int Number of sections found in dictionary
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This function returns the number of sections found in a dictionary.
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The test to recognize sections is done on the string stored in the
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dictionary: a section name is given as "section" whereas a key is
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stored as "section:key", thus the test looks for entries that do not
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contain a colon.
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This clearly fails in the case a section name contains a colon, but
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this should simply be avoided.
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This function returns -1 in case of error.
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*/
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/*--------------------------------------------------------------------------*/
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int iniparser_getnsec(const dictionary* d);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get name for section n in a dictionary.
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@param d Dictionary to examine
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@param n Section number (from 0 to nsec-1).
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@return Pointer to char string
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This function locates the n-th section in a dictionary and returns
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its name as a pointer to a string statically allocated inside the
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dictionary. Do not free or modify the returned string!
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This function returns NULL in case of error.
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*/
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/*--------------------------------------------------------------------------*/
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const char* iniparser_getsecname(const dictionary* d, int n);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Save a dictionary to a loadable ini file
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@param d Dictionary to dump
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@param f Opened file pointer to dump to
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This function dumps a given dictionary into a loadable ini file.
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It is Ok to specify @c stderr or @c stdout as output files.
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All values are quoted, these charecters are escaped:
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- ' : the quote character (e.g. "String with \"Quotes\"")
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- \ : the backslash character (e.g. "C:\\tmp")
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*/
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/*--------------------------------------------------------------------------*/
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void iniparser_dump_ini(const dictionary* d, FILE* f);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Save a dictionary section to a loadable ini file
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@param d Dictionary to dump
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@param s Section name of dictionary to dump
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@param f Opened file pointer to dump to
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This function dumps a given section of a given dictionary into a loadable ini
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file. It is Ok to specify @c stderr or @c stdout as output files.
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*/
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/*--------------------------------------------------------------------------*/
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void iniparser_dumpsection_ini(const dictionary* d, const char* s, FILE* f);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Dump a dictionary to an opened file pointer.
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@param d Dictionary to dump.
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@param f Opened file pointer to dump to.
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This function prints out the contents of a dictionary, one element by
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line, onto the provided file pointer. It is OK to specify @c stderr
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or @c stdout as output files. This function is meant for debugging
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purposes mostly.
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*/
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/*--------------------------------------------------------------------------*/
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void iniparser_dump(const dictionary* d, FILE* f);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the number of keys in a section of a dictionary.
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@param d Dictionary to examine
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@param s Section name of dictionary to examine
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@return Number of keys in section
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*/
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/*--------------------------------------------------------------------------*/
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int iniparser_getsecnkeys(const dictionary* d, const char* s);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the number of keys in a section of a dictionary.
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@param d Dictionary to examine
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@param s Section name of dictionary to examine
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@param keys Already allocated array to store the keys in
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@return The pointer passed as `keys` argument or NULL in case of error
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This function queries a dictionary and finds all keys in a given section.
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The keys argument should be an array of pointers which size has been
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determined by calling `iniparser_getsecnkeys` function prior to this one.
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Each pointer in the returned char pointer-to-pointer is pointing to
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a string allocated in the dictionary; do not free or modify them.
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*/
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/*--------------------------------------------------------------------------*/
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const char** iniparser_getseckeys(const dictionary* d, const char* s, const char** keys);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the string associated to a key
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@param d Dictionary to search
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@param key Key string to look for
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@param def Default value to return if key not found.
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@return pointer to statically allocated character string
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This function queries a dictionary for a key. A key as read from an
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ini file is given as "section:key". If the key cannot be found,
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the pointer passed as 'def' is returned.
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The returned char pointer is pointing to a string allocated in
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the dictionary, do not free or modify it.
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*/
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/*--------------------------------------------------------------------------*/
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const char* iniparser_getstring(const dictionary* d, const char* key, const char* def);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the string associated to a key, convert to an int
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@param d Dictionary to search
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@param key Key string to look for
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@param notfound Value to return in case of error
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@return integer
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This function queries a dictionary for a key. A key as read from an
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ini file is given as "section:key". If the key cannot be found,
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the notfound value is returned.
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Supported values for integers include the usual C notation
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so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
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are supported. Examples:
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- "42" -> 42
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- "042" -> 34 (octal -> decimal)
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- "0x42" -> 66 (hexa -> decimal)
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Warning: the conversion may overflow in various ways. Conversion is
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totally outsourced to strtol(), see the associated man page for overflow
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handling.
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Credits: Thanks to A. Becker for suggesting strtol()
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*/
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/*--------------------------------------------------------------------------*/
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int iniparser_getint(const dictionary* d, const char* key, int notfound);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the string associated to a key, convert to an long int
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@param d Dictionary to search
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@param key Key string to look for
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@param notfound Value to return in case of error
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@return integer
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This function queries a dictionary for a key. A key as read from an
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ini file is given as "section:key". If the key cannot be found,
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the notfound value is returned.
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Supported values for integers include the usual C notation
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so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
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are supported. Examples:
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- "42" -> 42
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- "042" -> 34 (octal -> decimal)
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- "0x42" -> 66 (hexa -> decimal)
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Warning: the conversion may overflow in various ways. Conversion is
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totally outsourced to strtol(), see the associated man page for overflow
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handling.
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*/
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/*--------------------------------------------------------------------------*/
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long int iniparser_getlongint(const dictionary* d, const char* key, long int notfound);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the string associated to a key, convert to an int64_t
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@param d Dictionary to search
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@param key Key string to look for
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@param notfound Value to return in case of error
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@return integer
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This function queries a dictionary for a key. A key as read from an
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ini file is given as "section:key". If the key cannot be found,
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the notfound value is returned.
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Supported values for integers include the usual C notation
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so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
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are supported. Examples:
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- "42" -> 42
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- "042" -> 34 (octal -> decimal)
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- "0x42" -> 66 (hexa -> decimal)
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Warning: the conversion may overflow in various ways. Conversion is
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totally outsourced to strtoimax(), see the associated man page for overflow
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handling.
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This function is usefull on 32bit architectures where `long int` is only
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32bit.
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*/
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/*--------------------------------------------------------------------------*/
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int64_t iniparser_getint64(const dictionary* d, const char* key, int64_t notfound);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the string associated to a key, convert to an uint64_t
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@param d Dictionary to search
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@param key Key string to look for
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@param notfound Value to return in case of error
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@return integer
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This function queries a dictionary for a key. A key as read from an
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ini file is given as "section:key". If the key cannot be found,
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the notfound value is returned.
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Supported values for integers include the usual C notation
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so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
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are supported. Examples:
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- "42" -> 42
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- "042" -> 34 (octal -> decimal)
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- "0x42" -> 66 (hexa -> decimal)
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Warning: the conversion may overflow in various ways. Conversion is
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totally outsourced to strtoumax(), see the associated man page for overflow
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handling.
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This function is usefull on 32bit architectures where `long int` is only
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32bit.
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*/
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/*--------------------------------------------------------------------------*/
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uint64_t iniparser_getuint64(const dictionary* d, const char* key, uint64_t notfound);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the string associated to a key, convert to a double
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@param d Dictionary to search
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@param key Key string to look for
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@param notfound Value to return in case of error
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@return double
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This function queries a dictionary for a key. A key as read from an
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ini file is given as "section:key". If the key cannot be found,
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the notfound value is returned.
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*/
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/*--------------------------------------------------------------------------*/
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double iniparser_getdouble(const dictionary* d, const char* key, double notfound);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Get the string associated to a key, convert to a boolean
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@param d Dictionary to search
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@param key Key string to look for
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@param notfound Value to return in case of error
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@return integer
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This function queries a dictionary for a key. A key as read from an
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ini file is given as "section:key". If the key cannot be found,
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the notfound value is returned.
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A true boolean is found if one of the following is matched:
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- A string starting with 'y'
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- A string starting with 'Y'
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- A string starting with 't'
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- A string starting with 'T'
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- A string starting with '1'
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A false boolean is found if one of the following is matched:
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- A string starting with 'n'
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- A string starting with 'N'
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- A string starting with 'f'
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- A string starting with 'F'
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- A string starting with '0'
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The notfound value returned if no boolean is identified, does not
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necessarily have to be 0 or 1.
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*/
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/*--------------------------------------------------------------------------*/
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int iniparser_getboolean(const dictionary* d, const char* key, int notfound);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Set an entry in a dictionary.
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@param ini Dictionary to modify.
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@param entry Entry to modify (entry name)
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@param val New value to associate to the entry.
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@return int 0 if Ok, -1 otherwise.
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If the given entry can be found in the dictionary, it is modified to
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contain the provided value. If it cannot be found, the entry is created.
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It is Ok to set val to NULL.
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*/
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/*--------------------------------------------------------------------------*/
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int iniparser_set(dictionary* ini, const char* entry, const char* val);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Delete an entry in a dictionary
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@param ini Dictionary to modify
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@param entry Entry to delete (entry name)
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If the given entry can be found, it is deleted from the dictionary.
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*/
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/*--------------------------------------------------------------------------*/
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void iniparser_unset(dictionary* ini, const char* entry);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Finds out if a given entry exists in a dictionary
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@param ini Dictionary to search
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@param entry Name of the entry to look for
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@return integer 1 if entry exists, 0 otherwise
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Finds out if a given entry exists in the dictionary. Since sections
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are stored as keys with NULL associated values, this is the only way
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of querying for the presence of sections in a dictionary.
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*/
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/*--------------------------------------------------------------------------*/
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int iniparser_find_entry(const dictionary* ini, const char* entry);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Parse an ini file and return an allocated dictionary object
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@param ininame Name of the ini file to read.
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@return Pointer to newly allocated dictionary
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This is the parser for ini files. This function is called, providing
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the name of the file to be read. It returns a dictionary object that
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should not be accessed directly, but through accessor functions
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instead.
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Iff the value is a quoted string it supports some escape sequences:
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- \" or ' : the quote character
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(e.g. 'String with "Quotes"' or "String with 'Quotes'")
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- \ : the backslash character (e.g. "C:\tmp")
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Escape sequences always start with a backslash. Additional escape sequences
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might be added in the future. Backslash characters must be escaped. Any other
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sequence then those outlined above is invalid and may lead to unpredictable
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results.
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The returned dictionary must be freed using iniparser_freedict().
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*/
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/*--------------------------------------------------------------------------*/
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dictionary* iniparser_load(const char* ininame);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Parse an ini file and return an allocated dictionary object
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@param in File to read.
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@param ininame Name of the ini file to read (only used for nicer error messages)
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@return Pointer to newly allocated dictionary
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This is the parser for ini files. This function is called, providing
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the file to be read. It returns a dictionary object that should not
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be accessed directly, but through accessor functions instead.
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Iff the value is a quoted string it supports some escape sequences:
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- \" or ' : the quote character
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(e.g. 'String with "Quotes"' or "String with 'Quotes'")
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- \ : the backslash character (e.g. "C:\tmp")
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Escape sequences always start with a backslash. Additional escape sequences
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might be added in the future. Backslash characters must be escaped. Any other
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sequence then those outlined above is invalid and may lead to unpredictable
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results.
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The returned dictionary must be freed using iniparser_freedict().
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*/
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/*--------------------------------------------------------------------------*/
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dictionary* iniparser_load_file(FILE* in, const char* ininame);
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/*-------------------------------------------------------------------------*/
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/**
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@brief Free all memory associated to an ini dictionary
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@param d Dictionary to free
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Free all memory associated to an ini dictionary.
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It is mandatory to call this function before the dictionary object
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gets out of the current context.
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*/
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/*--------------------------------------------------------------------------*/
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void iniparser_freedict(dictionary* d);
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#ifdef __cplusplus
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}
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#endif
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#endif
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