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/*
* Copyright (C) 2009-2012 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_git_config_h__
#define INCLUDE_git_config_h__
#include "common.h"
#include "types.h"
/**
* @file git2/config.h
* @brief Git config management routines
* @defgroup git_config Git config management routines
* @ingroup Git
* @{
*/
GIT_BEGIN_DECL
/**
* Priority level of a config file.
* These priority levels correspond to the natural escalation logic
* (from higher to lower) when searching for config entries in git.git.
*
* git_config_open_default() and git_repository_config() honor those
* priority levels as well.
*/
enum {
GIT_CONFIG_LEVEL_SYSTEM = 1, /**< System-wide configuration file. */
GIT_CONFIG_LEVEL_XDG = 2, /**< XDG compatible configuration file (.config/git/config). */
GIT_CONFIG_LEVEL_GLOBAL = 3, /**< User-specific configuration file, also called Global configuration file. */
GIT_CONFIG_LEVEL_LOCAL = 4, /**< Repository specific configuration file. */
GIT_CONFIG_HIGHEST_LEVEL = -1, /**< Represents the highest level of a config file. */
};
typedef struct {
const char *name;
const char *value;
unsigned int level;
} git_config_entry;
typedef int (*git_config_foreach_cb)(const git_config_entry *, void *);
/**
* Generic backend that implements the interface to
* access a configuration file
*/
struct git_config_backend {
unsigned int version;
struct git_config *cfg;
/* Open means open the file/database and parse if necessary */
int (*open)(struct git_config_backend *, unsigned int level);
int (*get)(const struct git_config_backend *, const char *key, const git_config_entry **entry);
int (*get_multivar)(struct git_config_backend *, const char *key, const char *regexp, git_config_foreach_cb callback, void *payload);
int (*set)(struct git_config_backend *, const char *key, const char *value);
int (*set_multivar)(git_config_backend *cfg, const char *name, const char *regexp, const char *value);
int (*del)(struct git_config_backend *, const char *key);
int (*foreach)(struct git_config_backend *, const char *, git_config_foreach_cb callback, void *payload);
int (*refresh)(struct git_config_backend *);
void (*free)(struct git_config_backend *);
};
#define GIT_CONFIG_BACKEND_VERSION 1
#define GIT_CONFIG_BACKEND_INIT {GIT_CONFIG_BACKEND_VERSION}
typedef enum {
GIT_CVAR_FALSE = 0,
GIT_CVAR_TRUE = 1,
GIT_CVAR_INT32,
GIT_CVAR_STRING
} git_cvar_t;
typedef struct {
git_cvar_t cvar_type;
const char *str_match;
int map_value;
} git_cvar_map;
/**
* Locate the path to the global configuration file
*
* The user or global configuration file is usually
* located in `$HOME/.gitconfig`.
*
* This method will try to guess the full path to that
* file, if the file exists. The returned path
* may be used on any `git_config` call to load the
* global configuration file.
*
* This method will not guess the path to the xdg compatible
* config file (.config/git/config).
*
* @param out Buffer to store the path in
* @param length size of the buffer in bytes
* @return 0 if a global configuration file has been found. Its path will be stored in `buffer`.
*/
GIT_EXTERN(int) git_config_find_global(char *out, size_t length);
/**
* Locate the path to the global xdg compatible configuration file
*
* The xdg compatible configuration file is usually
* located in `$HOME/.config/git/config`.
*
* This method will try to guess the full path to that
* file, if the file exists. The returned path
* may be used on any `git_config` call to load the
* xdg compatible configuration file.
*
* @param out Buffer to store the path in
* @param length size of the buffer in bytes
* @return 0 if a xdg compatible configuration file has been
* found. Its path will be stored in `buffer`.
*/
GIT_EXTERN(int) git_config_find_xdg(char *out, size_t length);
/**
* Locate the path to the system configuration file
*
* If /etc/gitconfig doesn't exist, it will look for
* %PROGRAMFILES%\Git\etc\gitconfig.
* @param global_config_path Buffer to store the path in
* @param length size of the buffer in bytes
* @return 0 if a system configuration file has been
* found. Its path will be stored in `buffer`.
*/
GIT_EXTERN(int) git_config_find_system(char *out, size_t length);
/**
* Open the global, XDG and system configuration files
*
* Utility wrapper that finds the global, XDG and system configuration files
* and opens them into a single prioritized config object that can be
* used when accessing default config data outside a repository.
*
* @param out Pointer to store the config instance
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_open_default(git_config **out);
/**
* Allocate a new configuration object
*
* This object is empty, so you have to add a file to it before you
* can do anything with it.
*
* @param out pointer to the new configuration
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_new(git_config **out);
/**
* Add a generic config file instance to an existing config
*
* Note that the configuration object will free the file
* automatically.
*
* Further queries on this config object will access each
* of the config file instances in order (instances with
* a higher priority level will be accessed first).
*
* @param cfg the configuration to add the file to
* @param file the configuration file (backend) to add
* @param level the priority level of the backend
* @param force if a config file already exists for the given
* priority level, replace it
* @return 0 on success, GIT_EEXISTS when adding more than one file
* for a given priority level (and force_replace set to 0), or error code
*/
GIT_EXTERN(int) git_config_add_backend(
git_config *cfg,
git_config_backend *file,
unsigned int level,
int force);
/**
* Add an on-disk config file instance to an existing config
*
* The on-disk file pointed at by `path` will be opened and
* parsed; it's expected to be a native Git config file following
* the default Git config syntax (see man git-config).
*
* Note that the configuration object will free the file
* automatically.
*
* Further queries on this config object will access each
* of the config file instances in order (instances with
* a higher priority level will be accessed first).
*
* @param cfg the configuration to add the file to
* @param path path to the configuration file (backend) to add
* @param level the priority level of the backend
* @param force if a config file already exists for the given
* priority level, replace it
* @return 0 on success, GIT_EEXISTS when adding more than one file
* for a given priority level (and force_replace set to 0),
* GIT_ENOTFOUND when the file doesn't exist or error code
*/
GIT_EXTERN(int) git_config_add_file_ondisk(
git_config *cfg,
const char *path,
unsigned int level,
int force);
/**
* Create a new config instance containing a single on-disk file
*
* This method is a simple utility wrapper for the following sequence
* of calls:
* - git_config_new
* - git_config_add_file_ondisk
*
* @param out The configuration instance to create
* @param path Path to the on-disk file to open
* @return 0 on success, GIT_ENOTFOUND when the file doesn't exist
* or an error code
*/
GIT_EXTERN(int) git_config_open_ondisk(git_config **out, const char *path);
/**
* Build a single-level focused config object from a multi-level one.
*
* The returned config object can be used to perform get/set/delete operations
* on a single specific level.
*
* Getting several times the same level from the same parent multi-level config
* will return different config instances, but containing the same config_file
* instance.
*
* @param out The configuration instance to create
* @param parent Multi-level config to search for the given level
* @param level Configuration level to search for
* @return 0, GIT_ENOTFOUND if the passed level cannot be found in the
* multi-level parent config, or an error code
*/
GIT_EXTERN(int) git_config_open_level(
git_config **out,
const git_config *parent,
unsigned int level);
/**
* Reload changed config files
*
* A config file may be changed on disk out from under the in-memory
* config object. This function causes us to look for files that have
* been modified since we last loaded them and refresh the config with
* the latest information.
*
* @param cfg The configuration to refresh
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_refresh(git_config *cfg);
/**
* Free the configuration and its associated memory and files
*
* @param cfg the configuration to free
*/
GIT_EXTERN(void) git_config_free(git_config *cfg);
/**
* Get the git_config_entry of a config variable.
*
* The git_config_entry is owned by the config and should not be freed by the
* user.
* @param out pointer to the variable git_config_entry
* @param cfg where to look for the variable
* @param name the variable's name
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_get_entry(
const git_config_entry **out,
const git_config *cfg,
const char *name);
/**
* Get the value of an integer config variable.
*
* All config files will be looked into, in the order of their
* defined level. A higher level means a higher priority. The
* first occurence of the variable will be returned here.
*
* @param out pointer to the variable where the value should be stored
* @param cfg where to look for the variable
* @param name the variable's name
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_get_int32(int32_t *out, const git_config *cfg, const char *name);
/**
* Get the value of a long integer config variable.
*
* All config files will be looked into, in the order of their
* defined level. A higher level means a higher priority. The
* first occurrence of the variable will be returned here.
*
* @param out pointer to the variable where the value should be stored
* @param cfg where to look for the variable
* @param name the variable's name
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_get_int64(int64_t *out, const git_config *cfg, const char *name);
/**
* Get the value of a boolean config variable.
*
* This function uses the usual C convention of 0 being false and
* anything else true.
*
* All config files will be looked into, in the order of their
* defined level. A higher level means a higher priority. The
* first occurrence of the variable will be returned here.
*
* @param out pointer to the variable where the value should be stored
* @param cfg where to look for the variable
* @param name the variable's name
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_get_bool(int *out, const git_config *cfg, const char *name);
/**
* Get the value of a string config variable.
*
* The string is owned by the variable and should not be freed by the
* user.
*
* All config files will be looked into, in the order of their
* defined level. A higher level means a higher priority. The
* first occurrence of the variable will be returned here.
*
* @param out pointer to the variable's value
* @param cfg where to look for the variable
* @param name the variable's name
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_get_string(const char **out, const git_config *cfg, const char *name);
/**
* Get each value of a multivar.
*
* The callback will be called on each variable found
*
* @param cfg where to look for the variable
* @param name the variable's name
* @param regexp regular expression to filter which variables we're
* interested in. Use NULL to indicate all
* @param fn the function to be called on each value of the variable
* @param data opaque pointer to pass to the callback
*/
GIT_EXTERN(int) git_config_get_multivar(const git_config *cfg, const char *name, const char *regexp, git_config_foreach_cb callback, void *payload);
/**
* Set the value of an integer config variable in the config file
* with the highest level (usually the local one).
*
* @param cfg where to look for the variable
* @param name the variable's name
* @param value Integer value for the variable
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_set_int32(git_config *cfg, const char *name, int32_t value);
/**
* Set the value of a long integer config variable in the config file
* with the highest level (usually the local one).
*
* @param cfg where to look for the variable
* @param name the variable's name
* @param value Long integer value for the variable
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_set_int64(git_config *cfg, const char *name, int64_t value);
/**
* Set the value of a boolean config variable in the config file
* with the highest level (usually the local one).
*
* @param cfg where to look for the variable
* @param name the variable's name
* @param value the value to store
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_set_bool(git_config *cfg, const char *name, int value);
/**
* Set the value of a string config variable in the config file
* with the highest level (usually the local one).
*
* A copy of the string is made and the user is free to use it
* afterwards.
*
* @param cfg where to look for the variable
* @param name the variable's name
* @param value the string to store.
* @return 0 or an error code
*/
GIT_EXTERN(int) git_config_set_string(git_config *cfg, const char *name, const char *value);
/**
* Set a multivar in the local config file.
*
* @param cfg where to look for the variable
* @param name the variable's name
* @param regexp a regular expression to indicate which values to replace
* @param value the new value.
*/
GIT_EXTERN(int) git_config_set_multivar(git_config *cfg, const char *name, const char *regexp, const char *value);
/**
* Delete a config variable from the config file
* with the highest level (usually the local one).
*
* @param cfg the configuration
* @param name the variable to delete
*/
GIT_EXTERN(int) git_config_delete_entry(git_config *cfg, const char *name);
/**
* Perform an operation on each config variable.
*
* The callback receives the normalized name and value of each variable
* in the config backend, and the data pointer passed to this function.
* As soon as one of the callback functions returns something other than 0,
* this function stops iterating and returns `GIT_EUSER`.
*
* @param cfg where to get the variables from
* @param callback the function to call on each variable
* @param payload the data to pass to the callback
* @return 0 on success, GIT_EUSER on non-zero callback, or error code
*/
GIT_EXTERN(int) git_config_foreach(
const git_config *cfg,
git_config_foreach_cb callback,
void *payload);
/**
* Perform an operation on each config variable matching a regular expression.
*
* This behaviors like `git_config_foreach` with an additional filter of a
* regular expression that filters which config keys are passed to the
* callback.
*
* @param cfg where to get the variables from
* @param regexp regular expression to match against config names
* @param callback the function to call on each variable
* @param payload the data to pass to the callback
* @return 0 or the return value of the callback which didn't return 0
*/
GIT_EXTERN(int) git_config_foreach_match(
const git_config *cfg,
const char *regexp,
git_config_foreach_cb callback,
void *payload);
/**
* Query the value of a config variable and return it mapped to
* an integer constant.
*
* This is a helper method to easily map different possible values
* to a variable to integer constants that easily identify them.
*
* A mapping array looks as follows:
*
* git_cvar_map autocrlf_mapping[] = {
* {GIT_CVAR_FALSE, NULL, GIT_AUTO_CRLF_FALSE},
* {GIT_CVAR_TRUE, NULL, GIT_AUTO_CRLF_TRUE},
* {GIT_CVAR_STRING, "input", GIT_AUTO_CRLF_INPUT},
* {GIT_CVAR_STRING, "default", GIT_AUTO_CRLF_DEFAULT}};
*
* On any "false" value for the variable (e.g. "false", "FALSE", "no"), the
* mapping will store `GIT_AUTO_CRLF_FALSE` in the `out` parameter.
*
* The same thing applies for any "true" value such as "true", "yes" or "1", storing
* the `GIT_AUTO_CRLF_TRUE` variable.
*
* Otherwise, if the value matches the string "input" (with case insensitive comparison),
* the given constant will be stored in `out`, and likewise for "default".
*
* If not a single match can be made to store in `out`, an error code will be
* returned.
*
* @param out place to store the result of the mapping
* @param cfg config file to get the variables from
* @param name name of the config variable to lookup
* @param maps array of `git_cvar_map` objects specifying the possible mappings
* @param map_n number of mapping objects in `maps`
* @return 0 on success, error code otherwise
*/
GIT_EXTERN(int) git_config_get_mapped(
int *out,
const git_config *cfg,
const char *name,
const git_cvar_map *maps,
size_t map_n);
/**
* Maps a string value to an integer constant
*
* @param out place to store the result of the parsing
* @param maps array of `git_cvar_map` objects specifying the possible mappings
* @param map_n number of mapping objects in `maps`
* @param value value to parse
*/
GIT_EXTERN(int) git_config_lookup_map_value(
int *out,
const git_cvar_map *maps,
size_t map_n,
const char *value);
/**
* Parse a string value as a bool.
*
* Valid values for true are: 'true', 'yes', 'on', 1 or any
* number different from 0
* Valid values for false are: 'false', 'no', 'off', 0
*
* @param out place to store the result of the parsing
* @param value value to parse
*/
GIT_EXTERN(int) git_config_parse_bool(int *out, const char *value);
/**
* Parse a string value as an int32.
*
* An optional value suffix of 'k', 'm', or 'g' will
* cause the value to be multiplied by 1024, 1048576,
* or 1073741824 prior to output.
*
* @param out place to store the result of the parsing
* @param value value to parse
*/
GIT_EXTERN(int) git_config_parse_int32(int32_t *out, const char *value);
/**
* Parse a string value as an int64.
*
* An optional value suffix of 'k', 'm', or 'g' will
* cause the value to be multiplied by 1024, 1048576,
* or 1073741824 prior to output.
*
* @param out place to store the result of the parsing
* @param value value to parse
*/
GIT_EXTERN(int) git_config_parse_int64(int64_t *out, const char *value);
/** @} */
GIT_END_DECL
#endif
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