libeconf 0.7.1

libeconf.h
Go to the documentation of this file.
1 /*
2 Copyright (C) 2019 SUSE LLC
3 Author: Pascal Arlt <parlt@suse.com>
4
5 Permission is hereby granted, free of charge, to any person obtaining a copy
6 of this software and associated documentation files (the "Software"), to deal
7 in the Software without restriction, including without limitation the rights
8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 copies of the Software, and to permit persons to whom the Software is
10 furnished to do so, subject to the following conditions:
11
12 The above copyright notice and this permission notice shall be included in all
13 copies or substantial portions of the Software.
14
15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 SOFTWARE.
22 */
23
24 #pragma once
25
30 #include <stdbool.h>
31 #include <stdint.h>
32 #include <stdlib.h>
33 #include <sys/types.h>
34
35 #ifdef __cplusplus
36 extern "C" {
37 #endif
38
41 enum econf_err {
43 ECONF_SUCCESS = 0,
45 ECONF_ERROR = 1,
47 ECONF_NOMEM = 2,
49 ECONF_NOFILE = 3,
51 ECONF_NOGROUP = 4,
53 ECONF_NOKEY = 5,
55 ECONF_EMPTYKEY = 6,
57 ECONF_WRITEERROR = 7,
59 ECONF_PARSE_ERROR = 8,
61 ECONF_MISSING_BRACKET = 9,
63 ECONF_MISSING_DELIMITER = 10,
65 ECONF_EMPTY_SECTION_NAME = 11,
67 ECONF_TEXT_AFTER_SECTION = 12,
69 ECONF_FILE_LIST_IS_NULL = 13,
71 ECONF_WRONG_BOOLEAN_VALUE = 14,
73 ECONF_KEY_HAS_NULL_VALUE = 15,
75 ECONF_WRONG_OWNER = 16,
77 ECONF_WRONG_GROUP = 17,
79 ECONF_WRONG_FILE_PERMISSION = 18,
81 ECONF_WRONG_DIR_PERMISSION = 19,
83 ECONF_ERROR_FILE_IS_SYM_LINK = 20,
85 ECONF_PARSING_CALLBACK_FAILED = 21,
87 ECONF_ARGUMENT_IS_NULL_VALUE = 22,
89 ECONF_OPTION_NOT_FOUND = 23,
91 ECONF_VALUE_CONVERSION_ERROR = 24
92 };
93
94 typedef enum econf_err econf_err;
95
106 #define econf_setValue(kf, group, key, value) (( \
107 _Generic((value), \
108 int: econf_setIntValue, \
109 long: econf_setInt64Value, \
110 unsigned int: econf_setUIntValue, \
111 unsigned long: econf_setUInt64Value, \
112 float: econf_setFloatValue, \
113 double: econf_setDoubleValue, \
114 char*: econf_setStringValue, void*: econf_setStringValue)) \
115 (kf, group, key, value))
116
123 #define econf_free(value) (( \
124 _Generic((value), \
125 econf_file*: econf_freeFile , \
126 char**: econf_freeArray)) \
127 (value))
128
129 typedef struct econf_file econf_file;
130
155 extern econf_err econf_readFile(econf_file **result, const char *file_name,
156 const char *delim, const char *comment);
157
158
198 extern econf_err econf_readFileWithCallback(econf_file **result, const char *file_name,
199 const char *delim, const char *comment,
200 bool (*callback)(const char *filename, const void *data),
201 const void *callback_data);
202
231 extern econf_err econf_mergeFiles(econf_file **merged_file,
232 econf_file *usr_file, econf_file *etc_file);
233
234
332 extern econf_err econf_readConfig (econf_file **key_file,
333 const char *project,
334 const char *usr_subdir,
335 const char *config_name,
336 const char *config_suffix,
337 const char *delim,
338 const char *comment);
339
451 extern econf_err econf_readConfigWithCallback(econf_file **key_file,
452 const char *project,
453 const char *usr_subdir,
454 const char *config_name,
455 const char *config_suffix,
456 const char *delim,
457 const char *comment,
458 bool (*callback)(const char *filename, const void *data),
459 const void *callback_data);
460
461
496 extern econf_err __attribute__ ((deprecated("Use the econf_readConfig/econf_readConfigWithCallback instead")))
497 econf_readDirs(econf_file **key_file,
498 const char *usr_conf_dir,
499 const char *etc_conf_dir,
500 const char *config_name,
501 const char *config_suffix,
502 const char *delim,
503 const char *comment);
504
551 extern econf_err __attribute__ ((deprecated("Use the econf_readConfig/econf_readConfigWithCallback instead")))
552 econf_readDirsWithCallback(econf_file **key_file,
553 const char *usr_conf_dir,
554 const char *etc_conf_dir,
555 const char *config_name,
556 const char *config_suffix,
557 const char *delim,
558 const char *comment,
559 bool (*callback)(const char *filename, const void *data),
560 const void *callback_data);
561
580 extern econf_err econf_readDirsHistory(econf_file ***key_files,
581 size_t *size,
582 const char *usr_conf_dir,
583 const char *etc_conf_dir,
584 const char *config_name,
585 const char *config_suffix,
586 const char *delim,
587 const char *comment);
588
612 extern econf_err econf_readDirsHistoryWithCallback(econf_file ***key_files,
613 size_t *size,
614 const char *usr_conf_dir,
615 const char *etc_conf_dir,
616 const char *config_name,
617 const char *config_suffix,
618 const char *delim,
619 const char *comment,
620 bool (*callback)(const char *filename, const void *data),
621 const void *callback_data);
622
631 extern econf_err econf_newKeyFile(econf_file **result, char delimiter, char comment);
632
686 extern econf_err econf_newKeyFile_with_options(econf_file **result, const char *options);
687
695 extern econf_err econf_newIniFile(econf_file **result);
696
704 extern char econf_comment_tag(econf_file *key_file);
705
713 extern char econf_delimiter_tag(econf_file *key_file);
714
722 extern void econf_set_comment_tag(econf_file *key_file, const char comment);
723
731 extern void econf_set_delimiter_tag(econf_file *key_file, const char delimiter);
732
741 extern econf_err econf_writeFile(econf_file *key_file, const char *save_to_dir,
742 const char *file_name);
743
744 /* --------------- */
745 /* --- GETTERS --- */
746 /* --------------- */
747
755 extern char *econf_getPath(econf_file *kf);
756
765 extern econf_err econf_getGroups(econf_file *kf, size_t *length, char ***groups);
766
777 extern econf_err econf_getKeys(econf_file *kf, const char *group, size_t *length, char ***keys);
778
788 extern econf_err econf_getIntValue(econf_file *kf, const char *group, const char *key, int32_t *result);
789
799 extern econf_err econf_getInt64Value(econf_file *kf, const char *group, const char *key, int64_t *result);
800
810 extern econf_err econf_getUIntValue(econf_file *kf, const char *group, const char *key, uint32_t *result);
811
821 extern econf_err econf_getUInt64Value(econf_file *kf, const char *group, const char *key, uint64_t *result);
822
832 extern econf_err econf_getFloatValue(econf_file *kf, const char *group, const char *key, float *result);
833
843 extern econf_err econf_getDoubleValue(econf_file *kf, const char *group, const char *key, double *result);
844
854 extern econf_err econf_getStringValue(econf_file *kf, const char *group, const char *key, char **result);
855
865 extern econf_err econf_getBoolValue(econf_file *kf, const char *group, const char *key, bool *result);
866
878 extern econf_err econf_getIntValueDef(econf_file *kf, const char *group, const char *key, int32_t *result, int32_t def);
879
891 extern econf_err econf_getInt64ValueDef(econf_file *kf, const char *group, const char *key, int64_t *result, int64_t def);
892
904 extern econf_err econf_getUIntValueDef(econf_file *kf, const char *group, const char *key, uint32_t *result, uint32_t def);
905
917 extern econf_err econf_getUInt64ValueDef(econf_file *kf, const char *group, const char *key, uint64_t *result, uint64_t def);
918
930 extern econf_err econf_getFloatValueDef(econf_file *kf, const char *group, const char *key, float *result, float def);
931
943 extern econf_err econf_getDoubleValueDef(econf_file *kf, const char *group, const char *key, double *result, double def);
944
956 extern econf_err econf_getStringValueDef(econf_file *kf, const char *group, const char *key, char **result, char *def);
957
969 extern econf_err econf_getBoolValueDef(econf_file *kf, const char *group, const char *key, bool *result, bool def);
970
971 /* --------------- */
972 /* --- SETTERS --- */
973 /* --------------- */
974
984 extern econf_err econf_setIntValue(econf_file *kf, const char *group, const char *key, int32_t value);
985
995 extern econf_err econf_setInt64Value(econf_file *kf, const char *group, const char *key, int64_t value);
996
1006 extern econf_err econf_setUIntValue(econf_file *kf, const char *group, const char *key, uint32_t value);
1007
1017 extern econf_err econf_setUInt64Value(econf_file *kf, const char *group, const char *key, uint64_t value);
1018
1028 extern econf_err econf_setFloatValue(econf_file *kf, const char *group, const char *key, float value);
1029
1039 extern econf_err econf_setDoubleValue(econf_file *kf, const char *group, const char *key, double value);
1040
1050 extern econf_err econf_setStringValue(econf_file *kf, const char *group, const char *key, const char *value);
1051
1061 extern econf_err econf_setBoolValue(econf_file *kf, const char *group, const char *key, const char *value);
1062
1063 /* --------------- */
1064 /* --- HELPERS --- */
1065 /* --------------- */
1066
1073 extern const char *econf_errString (const econf_err error);
1074
1081 extern void econf_errLocation (char **filename, uint64_t *line_nr);
1082
1089 extern void econf_freeArray(char **array);
1090
1097 extern void econf_freeFile(econf_file *key_file);
1098
1107 extern void __attribute__ ((deprecated("use callback in econf_readFileWithCallback or econf_readConfigWithCallback instead")))
1108 econf_requireOwner(uid_t owner);
1109
1119 extern void __attribute__ ((deprecated("use callback in econf_readFileWithCallback or econf_readConfigWithCallback instead")))
1120 econf_requireGroup(gid_t group);
1121
1131 extern void __attribute__ ((deprecated("use callback in econf_readFileWithCallback or econf_readConfigWithCallback instead")))
1132 econf_requirePermissions(mode_t file_perms, mode_t dir_perms);
1133
1142 extern void __attribute__ ((deprecated("use callback in econf_readFileWithCallback or econf_readConfigWithCallback instead")))
1143 econf_followSymlinks(bool allow);
1144
1153 extern void __attribute__ ((deprecated("use callback in econf_readFileWithCallback or econf_readConfigWithCallback instead")))
1154 econf_reset_security_settings(void);
1155
1173 extern econf_err __attribute__ ((deprecated("Is not thread-safe. Use econf_newKeyFile_with_options instead")))
1174 econf_set_conf_dirs(const char **dir_postfix_list);
1175
1176 #ifdef __cplusplus
1177 }
1178 #endif
ECONF_EMPTY_SECTION_NAME
Empty section name.
Definition: libeconf.h:65
ECONF_PARSE_ERROR
General syntax error in input file.
Definition: libeconf.h:59
econf_requireGroup
void econf_requireGroup(gid_t group)
All parsed files require this group permission.
ECONF_ARGUMENT_IS_NULL_VALUE
Given argument is NULL.
Definition: libeconf.h:87
ECONF_MISSING_DELIMITER
Missing delimiter.
Definition: libeconf.h:63
ECONF_ERROR_FILE_IS_SYM_LINK
File is a sym link which is not permitted.
Definition: libeconf.h:83
econf_file
struct econf_file econf_file
Definition: libeconf.h:129
econf_set_comment_tag
void econf_set_comment_tag(econf_file *key_file, const char comment)
Set the comment character tag of the given econf_file object.
econf_readDirs
econf_err econf_readDirs(econf_file **key_file, const char *usr_conf_dir, const char *etc_conf_dir, const char *config_name, const char *config_suffix, const char *delim, const char *comment)
Evaluating key/values of a given configuration by reading and merging all needed/available files in t...
econf_setFloatValue
econf_err econf_setFloatValue(econf_file *kf, const char *group, const char *key, float value)
Set float value for given group/key.
econf_delimiter_tag
char econf_delimiter_tag(econf_file *key_file)
Returns the delimiter character of the given econf_file object.
ECONF_TEXT_AFTER_SECTION
Text after section.
Definition: libeconf.h:67
econf_setDoubleValue
econf_err econf_setDoubleValue(econf_file *kf, const char *group, const char *key, double value)
Set double value for given group/key.
ECONF_NOFILE
Config file not found.
Definition: libeconf.h:49
econf_comment_tag
char econf_comment_tag(econf_file *key_file)
Returns the comment character tag of the given econf_file object.
econf_getFloatValueDef
econf_err econf_getFloatValueDef(econf_file *kf, const char *group, const char *key, float *result, float def)
Evaluating float value for given group/key.
econf_readConfig
econf_err econf_readConfig(econf_file **key_file, const char *project, const char *usr_subdir, const char *config_name, const char *config_suffix, const char *delim, const char *comment)
Evaluating key/values of a given configuration by reading and merging all needed/available files from...
econf_reset_security_settings
void econf_reset_security_settings(void)
Reset all UID, GID, permissions,...
econf_getUInt64Value
econf_err econf_getUInt64Value(econf_file *kf, const char *group, const char *key, uint64_t *result)
Evaluating uint64 value for given group/key.
econf_errLocation
void econf_errLocation(char **filename, uint64_t *line_nr)
Info about where the error has happened.
econf_requirePermissions
void econf_requirePermissions(mode_t file_perms, mode_t dir_perms)
All parsed file have to have these file and directory permissions.
econf_getPath
char * econf_getPath(econf_file *kf)
Evaluating path name.
econf_readDirsHistory
econf_err econf_readDirsHistory(econf_file ***key_files, size_t *size, const char *usr_conf_dir, const char *etc_conf_dir, const char *config_name, const char *config_suffix, const char *delim, const char *comment)
Evaluating key/values for every given configuration files in two different directories (normally in /...
econf_getUInt64ValueDef
econf_err econf_getUInt64ValueDef(econf_file *kf, const char *group, const char *key, uint64_t *result, uint64_t def)
Evaluating uint64 value for given group/key.
econf_getUIntValue
econf_err econf_getUIntValue(econf_file *kf, const char *group, const char *key, uint32_t *result)
Evaluating uint32 value for given group/key.
econf_requireOwner
void econf_requireOwner(uid_t owner)
All parsed files require this user permission.
econf_freeArray
void econf_freeArray(char **array)
Free an array of type char** created by econf_getGroups() or econf_getKeys().
ECONF_WRONG_OWNER
File has wrong owner.
Definition: libeconf.h:75
econf_freeFile
void econf_freeFile(econf_file *key_file)
Free memory allocated by e.g.
ECONF_NOGROUP
Group not found.
Definition: libeconf.h:51
ECONF_VALUE_CONVERSION_ERROR
Value cannot be converted.
Definition: libeconf.h:91
econf_getBoolValue
econf_err econf_getBoolValue(econf_file *kf, const char *group, const char *key, bool *result)
Evaluating bool value for given group/key.
ECONF_WRONG_GROUP
File has wrong group.
Definition: libeconf.h:77
econf_getGroups
econf_err econf_getGroups(econf_file *kf, size_t *length, char ***groups)
Evaluating all group entries.
econf_getInt64ValueDef
econf_err econf_getInt64ValueDef(econf_file *kf, const char *group, const char *key, int64_t *result, int64_t def)
Evaluating int64 value for given group/key.
econf_getDoubleValueDef
econf_err econf_getDoubleValueDef(econf_file *kf, const char *group, const char *key, double *result, double def)
Evaluating double value for given group/key.
ECONF_WRONG_DIR_PERMISSION
File has wrong dir permission.
Definition: libeconf.h:81
ECONF_KEY_HAS_NULL_VALUE
Given key has NULL value.
Definition: libeconf.h:73
econf_getStringValue
econf_err econf_getStringValue(econf_file *kf, const char *group, const char *key, char **result)
Evaluating string value for given group/key.
ECONF_EMPTYKEY
Key is NULL or has empty value.
Definition: libeconf.h:55
econf_getKeys
econf_err econf_getKeys(econf_file *kf, const char *group, size_t *length, char ***keys)
Evaluating all keys.
econf_getFloatValue
econf_err econf_getFloatValue(econf_file *kf, const char *group, const char *key, float *result)
Evaluating float value for given group/key.
ECONF_WRONG_FILE_PERMISSION
File has wrong file permissions.
Definition: libeconf.h:79
econf_readFileWithCallback
econf_err econf_readFileWithCallback(econf_file **result, const char *file_name, const char *delim, const char *comment, bool(*callback)(const char *filename, const void *data), const void *callback_data)
Process the file of the given file_name and save its contents into key_file object.
econf_getStringValueDef
econf_err econf_getStringValueDef(econf_file *kf, const char *group, const char *key, char **result, char *def)
Evaluating string value for given group/key.
econf_writeFile
econf_err econf_writeFile(econf_file *key_file, const char *save_to_dir, const char *file_name)
Write content of an econf_file struct to specified location.
econf_setInt64Value
econf_err econf_setInt64Value(econf_file *kf, const char *group, const char *key, int64_t value)
Set int64 value for given group/key.
ECONF_FILE_LIST_IS_NULL
Parsed file list is NULL.
Definition: libeconf.h:69
ECONF_SUCCESS
General purpose success code.
Definition: libeconf.h:43
econf_getInt64Value
econf_err econf_getInt64Value(econf_file *kf, const char *group, const char *key, int64_t *result)
Evaluating int64 value for given group/key.
econf_setUIntValue
econf_err econf_setUIntValue(econf_file *kf, const char *group, const char *key, uint32_t value)
Set uint32 value for given group/key.
ECONF_NOMEM
Out of memory.
Definition: libeconf.h:47
econf_setStringValue
econf_err econf_setStringValue(econf_file *kf, const char *group, const char *key, const char *value)
Set string value for given group/key.
econf_newKeyFile
econf_err econf_newKeyFile(econf_file **result, char delimiter, char comment)
Create a new econf_file object.
econf_setUInt64Value
econf_err econf_setUInt64Value(econf_file *kf, const char *group, const char *key, uint64_t value)
Set uint64 value for given group/key.
econf_getUIntValueDef
econf_err econf_getUIntValueDef(econf_file *kf, const char *group, const char *key, uint32_t *result, uint32_t def)
Evaluating uint32 value for given group/key.
econf_readDirsHistoryWithCallback
econf_err econf_readDirsHistoryWithCallback(econf_file ***key_files, size_t *size, const char *usr_conf_dir, const char *etc_conf_dir, const char *config_name, const char *config_suffix, const char *delim, const char *comment, bool(*callback)(const char *filename, const void *data), const void *callback_data)
Evaluating key/values for every given configuration files in two different directories (normally in /...
ECONF_PARSING_CALLBACK_FAILED
User defined parsing callback has failed.
Definition: libeconf.h:85
ECONF_OPTION_NOT_FOUND
Given option not found.
Definition: libeconf.h:89
econf_newKeyFile_with_options
econf_err econf_newKeyFile_with_options(econf_file **result, const char *options)
Create a new econf_file object with special options.
econf_setBoolValue
econf_err econf_setBoolValue(econf_file *kf, const char *group, const char *key, const char *value)
Set bool value for given group/key.
econf_getIntValueDef
econf_err econf_getIntValueDef(econf_file *kf, const char *group, const char *key, int32_t *result, int32_t def)
Evaluating int32 value for given group/key.
econf_set_delimiter_tag
void econf_set_delimiter_tag(econf_file *key_file, const char delimiter)
Set the delimiter character of the given econf_file object.
ECONF_WRONG_BOOLEAN_VALUE
Wrong boolean value (1/0 true/false yes/no)
Definition: libeconf.h:71
econf_readConfigWithCallback
econf_err econf_readConfigWithCallback(econf_file **key_file, const char *project, const char *usr_subdir, const char *config_name, const char *config_suffix, const char *delim, const char *comment, bool(*callback)(const char *filename, const void *data), const void *callback_data)
Evaluating key/values of a given configuration by reading and merging all needed/available files from...
econf_getBoolValueDef
econf_err econf_getBoolValueDef(econf_file *kf, const char *group, const char *key, bool *result, bool def)
Evaluating bool value for given group/key.
econf_readFile
econf_err econf_readFile(econf_file **result, const char *file_name, const char *delim, const char *comment)
Process the file of the given file_name and save its contents into key_file object.
econf_newIniFile
econf_err econf_newIniFile(econf_file **result)
Create a new econf_file object in IniFile format.
econf_set_conf_dirs
econf_err econf_set_conf_dirs(const char **dir_postfix_list)
Set a list of directory structures (with order) which describes the directories in which the files h...
ECONF_MISSING_BRACKET
Missing closing section bracket.
Definition: libeconf.h:61
econf_errString
const char * econf_errString(const econf_err error)
Convert an econf_err type to a string.
econf_err
econf_err
libeconf error codes
Definition: libeconf.h:41
econf_getIntValue
econf_err econf_getIntValue(econf_file *kf, const char *group, const char *key, int32_t *result)
Evaluating int32 value for given group/key.
econf_mergeFiles
econf_err econf_mergeFiles(econf_file **merged_file, econf_file *usr_file, econf_file *etc_file)
Merge the contents of two key_files objects.
ECONF_NOKEY
Key not found.
Definition: libeconf.h:53
econf_followSymlinks
void econf_followSymlinks(bool allow)
Allowing the parser to follow sym links (default: true).
econf_getDoubleValue
econf_err econf_getDoubleValue(econf_file *kf, const char *group, const char *key, double *result)
Evaluating double value for given group/key.
econf_readDirsWithCallback
econf_err econf_readDirsWithCallback(econf_file **key_file, const char *usr_conf_dir, const char *etc_conf_dir, const char *config_name, const char *config_suffix, const char *delim, const char *comment, bool(*callback)(const char *filename, const void *data), const void *callback_data)
Evaluating key/values for every given configuration files in two different directories (normally in /...
ECONF_ERROR
Generic Error.
Definition: libeconf.h:45
econf_setIntValue
econf_err econf_setIntValue(econf_file *kf, const char *group, const char *key, int32_t value)
Set int32 value for given group/key.
ECONF_WRITEERROR
Error creating or writing to a file.
Definition: libeconf.h:57