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![Matthew Rogers](/assets/img/avatar_default.png)
To prepare for the upcoming --show-scope option, we require the ability to convert a config_scope enum to a string. As this was originally implemented as a static function 'scope_name()' in t/helper/test-config.c, we expose it via config.h and give it a less ambiguous name 'config_scope_name()' Signed-off-by: Matthew Rogers <mattr94@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
617 lines
21 KiB
C
617 lines
21 KiB
C
#ifndef CONFIG_H
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#define CONFIG_H
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#include "hashmap.h"
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#include "string-list.h"
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/**
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* The config API gives callers a way to access Git configuration files
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* (and files which have the same syntax).
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*
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* General Usage
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* -------------
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*
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* Config files are parsed linearly, and each variable found is passed to a
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* caller-provided callback function. The callback function is responsible
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* for any actions to be taken on the config option, and is free to ignore
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* some options. It is not uncommon for the configuration to be parsed
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* several times during the run of a Git program, with different callbacks
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* picking out different variables useful to themselves.
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*/
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struct object_id;
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/* git_config_parse_key() returns these negated: */
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#define CONFIG_INVALID_KEY 1
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#define CONFIG_NO_SECTION_OR_NAME 2
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/* git_config_set_gently(), git_config_set_multivar_gently() return the above or these: */
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#define CONFIG_NO_LOCK -1
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#define CONFIG_INVALID_FILE 3
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#define CONFIG_NO_WRITE 4
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#define CONFIG_NOTHING_SET 5
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#define CONFIG_INVALID_PATTERN 6
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#define CONFIG_GENERIC_ERROR 7
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#define CONFIG_REGEX_NONE ((void *)1)
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struct git_config_source {
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unsigned int use_stdin:1;
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const char *file;
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const char *blob;
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};
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enum config_origin_type {
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CONFIG_ORIGIN_BLOB,
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CONFIG_ORIGIN_FILE,
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CONFIG_ORIGIN_STDIN,
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CONFIG_ORIGIN_SUBMODULE_BLOB,
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CONFIG_ORIGIN_CMDLINE
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};
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enum config_event_t {
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CONFIG_EVENT_SECTION,
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CONFIG_EVENT_ENTRY,
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CONFIG_EVENT_WHITESPACE,
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CONFIG_EVENT_COMMENT,
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CONFIG_EVENT_EOF,
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CONFIG_EVENT_ERROR
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};
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/*
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* The parser event function (if not NULL) is called with the event type and
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* the begin/end offsets of the parsed elements.
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*
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* Note: for CONFIG_EVENT_ENTRY (i.e. config variables), the trailing newline
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* character is considered part of the element.
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*/
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typedef int (*config_parser_event_fn_t)(enum config_event_t type,
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size_t begin_offset, size_t end_offset,
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void *event_fn_data);
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struct config_options {
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unsigned int respect_includes : 1;
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unsigned int ignore_repo : 1;
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unsigned int ignore_worktree : 1;
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unsigned int ignore_cmdline : 1;
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unsigned int system_gently : 1;
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const char *commondir;
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const char *git_dir;
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config_parser_event_fn_t event_fn;
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void *event_fn_data;
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enum config_error_action {
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CONFIG_ERROR_UNSET = 0, /* use source-specific default */
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CONFIG_ERROR_DIE, /* die() on error */
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CONFIG_ERROR_ERROR, /* error() on error, return -1 */
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CONFIG_ERROR_SILENT, /* return -1 */
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} error_action;
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};
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/**
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* A config callback function takes three parameters:
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*
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* - the name of the parsed variable. This is in canonical "flat" form: the
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* section, subsection, and variable segments will be separated by dots,
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* and the section and variable segments will be all lowercase. E.g.,
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* `core.ignorecase`, `diff.SomeType.textconv`.
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*
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* - the value of the found variable, as a string. If the variable had no
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* value specified, the value will be NULL (typically this means it
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* should be interpreted as boolean true).
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*
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* - a void pointer passed in by the caller of the config API; this can
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* contain callback-specific data
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*
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* A config callback should return 0 for success, or -1 if the variable
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* could not be parsed properly.
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*/
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typedef int (*config_fn_t)(const char *, const char *, void *);
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int git_default_config(const char *, const char *, void *);
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/**
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* Read a specific file in git-config format.
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* This function takes the same callback and data parameters as `git_config`.
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*/
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int git_config_from_file(config_fn_t fn, const char *, void *);
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int git_config_from_file_with_options(config_fn_t fn, const char *,
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void *,
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const struct config_options *);
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int git_config_from_mem(config_fn_t fn,
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const enum config_origin_type,
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const char *name,
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const char *buf, size_t len,
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void *data, const struct config_options *opts);
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int git_config_from_blob_oid(config_fn_t fn, const char *name,
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const struct object_id *oid, void *data);
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void git_config_push_parameter(const char *text);
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int git_config_from_parameters(config_fn_t fn, void *data);
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void read_early_config(config_fn_t cb, void *data);
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void read_very_early_config(config_fn_t cb, void *data);
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/**
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* Most programs will simply want to look up variables in all config files
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* that Git knows about, using the normal precedence rules. To do this,
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* call `git_config` with a callback function and void data pointer.
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*
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* `git_config` will read all config sources in order of increasing
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* priority. Thus a callback should typically overwrite previously-seen
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* entries with new ones (e.g., if both the user-wide `~/.gitconfig` and
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* repo-specific `.git/config` contain `color.ui`, the config machinery
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* will first feed the user-wide one to the callback, and then the
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* repo-specific one; by overwriting, the higher-priority repo-specific
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* value is left at the end).
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*/
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void git_config(config_fn_t fn, void *);
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/**
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* Lets the caller examine config while adjusting some of the default
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* behavior of `git_config`. It should almost never be used by "regular"
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* Git code that is looking up configuration variables.
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* It is intended for advanced callers like `git-config`, which are
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* intentionally tweaking the normal config-lookup process.
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* It takes two extra parameters:
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*
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* - `config_source`
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* If this parameter is non-NULL, it specifies the source to parse for
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* configuration, rather than looking in the usual files. See `struct
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* git_config_source` in `config.h` for details. Regular `git_config` defaults
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* to `NULL`.
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*
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* - `opts`
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* Specify options to adjust the behavior of parsing config files. See `struct
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* config_options` in `config.h` for details. As an example: regular `git_config`
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* sets `opts.respect_includes` to `1` by default.
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*/
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int config_with_options(config_fn_t fn, void *,
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struct git_config_source *config_source,
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const struct config_options *opts);
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/**
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* Value Parsing Helpers
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* ---------------------
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*
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* The following helper functions aid in parsing string values
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*/
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int git_parse_ssize_t(const char *, ssize_t *);
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int git_parse_ulong(const char *, unsigned long *);
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/**
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* Same as `git_config_bool`, except that it returns -1 on error rather
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* than dying.
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*/
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int git_parse_maybe_bool(const char *);
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/**
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* Parse the string to an integer, including unit factors. Dies on error;
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* otherwise, returns the parsed result.
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*/
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int git_config_int(const char *, const char *);
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int64_t git_config_int64(const char *, const char *);
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/**
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* Identical to `git_config_int`, but for unsigned longs.
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*/
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unsigned long git_config_ulong(const char *, const char *);
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ssize_t git_config_ssize_t(const char *, const char *);
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/**
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* Same as `git_config_bool`, except that integers are returned as-is, and
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* an `is_bool` flag is unset.
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*/
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int git_config_bool_or_int(const char *, const char *, int *);
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/**
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* Parse a string into a boolean value, respecting keywords like "true" and
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* "false". Integer values are converted into true/false values (when they
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* are non-zero or zero, respectively). Other values cause a die(). If
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* parsing is successful, the return value is the result.
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*/
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int git_config_bool(const char *, const char *);
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/**
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* Allocates and copies the value string into the `dest` parameter; if no
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* string is given, prints an error message and returns -1.
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*/
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int git_config_string(const char **, const char *, const char *);
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/**
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* Similar to `git_config_string`, but expands `~` or `~user` into the
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* user's home directory when found at the beginning of the path.
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*/
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int git_config_pathname(const char **, const char *, const char *);
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int git_config_expiry_date(timestamp_t *, const char *, const char *);
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int git_config_color(char *, const char *, const char *);
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int git_config_set_in_file_gently(const char *, const char *, const char *);
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/**
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* write config values to a specific config file, takes a key/value pair as
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* parameter.
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*/
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void git_config_set_in_file(const char *, const char *, const char *);
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int git_config_set_gently(const char *, const char *);
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/**
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* write config values to `.git/config`, takes a key/value pair as parameter.
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*/
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void git_config_set(const char *, const char *);
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int git_config_parse_key(const char *, char **, int *);
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int git_config_key_is_valid(const char *key);
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int git_config_set_multivar_gently(const char *, const char *, const char *, int);
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void git_config_set_multivar(const char *, const char *, const char *, int);
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int git_config_set_multivar_in_file_gently(const char *, const char *, const char *, const char *, int);
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/**
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* takes four parameters:
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*
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* - the name of the file, as a string, to which key/value pairs will be written.
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*
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* - the name of key, as a string. This is in canonical "flat" form: the section,
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* subsection, and variable segments will be separated by dots, and the section
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* and variable segments will be all lowercase.
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* E.g., `core.ignorecase`, `diff.SomeType.textconv`.
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*
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* - the value of the variable, as a string. If value is equal to NULL, it will
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* remove the matching key from the config file.
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*
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* - the value regex, as a string. It will disregard key/value pairs where value
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* does not match.
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*
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* - a multi_replace value, as an int. If value is equal to zero, nothing or only
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* one matching key/value is replaced, else all matching key/values (regardless
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* how many) are removed, before the new pair is written.
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*
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* It returns 0 on success.
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*/
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void git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int);
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/**
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* rename or remove sections in the config file
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* parameters `old_name` and `new_name`
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* If NULL is passed through `new_name` parameter,
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* the section will be removed from the config file.
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*/
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int git_config_rename_section(const char *, const char *);
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int git_config_rename_section_in_file(const char *, const char *, const char *);
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int git_config_copy_section(const char *, const char *);
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int git_config_copy_section_in_file(const char *, const char *, const char *);
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const char *git_etc_gitconfig(void);
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int git_env_bool(const char *, int);
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unsigned long git_env_ulong(const char *, unsigned long);
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int git_config_system(void);
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int config_error_nonbool(const char *);
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#if defined(__GNUC__)
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#define config_error_nonbool(s) (config_error_nonbool(s), const_error())
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#endif
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int git_config_parse_parameter(const char *, config_fn_t fn, void *data);
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enum config_scope {
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CONFIG_SCOPE_UNKNOWN = 0,
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CONFIG_SCOPE_SYSTEM,
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CONFIG_SCOPE_GLOBAL,
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CONFIG_SCOPE_REPO,
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CONFIG_SCOPE_CMDLINE,
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};
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const char *config_scope_name(enum config_scope scope);
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enum config_scope current_config_scope(void);
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const char *current_config_origin_type(void);
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const char *current_config_name(void);
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/**
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* Include Directives
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* ------------------
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*
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* By default, the config parser does not respect include directives.
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* However, a caller can use the special `git_config_include` wrapper
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* callback to support them. To do so, you simply wrap your "real" callback
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* function and data pointer in a `struct config_include_data`, and pass
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* the wrapper to the regular config-reading functions. For example:
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*
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* -------------------------------------------
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* int read_file_with_include(const char *file, config_fn_t fn, void *data)
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* {
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* struct config_include_data inc = CONFIG_INCLUDE_INIT;
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* inc.fn = fn;
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* inc.data = data;
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* return git_config_from_file(git_config_include, file, &inc);
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* }
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* -------------------------------------------
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*
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* `git_config` respects includes automatically. The lower-level
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* `git_config_from_file` does not.
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*
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*/
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struct config_include_data {
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int depth;
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config_fn_t fn;
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void *data;
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const struct config_options *opts;
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};
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#define CONFIG_INCLUDE_INIT { 0 }
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int git_config_include(const char *name, const char *value, void *data);
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/*
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* Match and parse a config key of the form:
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*
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* section.(subsection.)?key
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*
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* (i.e., what gets handed to a config_fn_t). The caller provides the section;
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* we return -1 if it does not match, 0 otherwise. The subsection and key
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* out-parameters are filled by the function (and *subsection is NULL if it is
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* missing).
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*
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* If the subsection pointer-to-pointer passed in is NULL, returns 0 only if
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* there is no subsection at all.
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*/
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int parse_config_key(const char *var,
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const char *section,
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const char **subsection, int *subsection_len,
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const char **key);
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/**
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* Custom Configsets
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* -----------------
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*
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* A `config_set` can be used to construct an in-memory cache for
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* config-like files that the caller specifies (i.e., files like `.gitmodules`,
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* `~/.gitconfig` etc.). For example,
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*
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* ----------------------------------------
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* struct config_set gm_config;
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* git_configset_init(&gm_config);
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* int b;
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* //we add config files to the config_set
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* git_configset_add_file(&gm_config, ".gitmodules");
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* git_configset_add_file(&gm_config, ".gitmodules_alt");
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*
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* if (!git_configset_get_bool(gm_config, "submodule.frotz.ignore", &b)) {
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* //hack hack hack
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* }
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*
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* when we are done with the configset:
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* git_configset_clear(&gm_config);
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* ----------------------------------------
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*
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* Configset API provides functions for the above mentioned work flow
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*/
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struct config_set_element {
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struct hashmap_entry ent;
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char *key;
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struct string_list value_list;
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};
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struct configset_list_item {
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struct config_set_element *e;
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int value_index;
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};
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/*
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* the contents of the list are ordered according to their
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* position in the config files and order of parsing the files.
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* (i.e. key-value pair at the last position of .git/config will
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* be at the last item of the list)
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*/
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struct configset_list {
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struct configset_list_item *items;
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unsigned int nr, alloc;
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};
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struct config_set {
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struct hashmap config_hash;
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int hash_initialized;
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struct configset_list list;
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};
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/**
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* Initializes the config_set `cs`.
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*/
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void git_configset_init(struct config_set *cs);
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/**
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* Parses the file and adds the variable-value pairs to the `config_set`,
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* dies if there is an error in parsing the file. Returns 0 on success, or
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* -1 if the file does not exist or is inaccessible. The user has to decide
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* if he wants to free the incomplete configset or continue using it when
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* the function returns -1.
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*/
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int git_configset_add_file(struct config_set *cs, const char *filename);
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/**
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* Finds and returns the value list, sorted in order of increasing priority
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* for the configuration variable `key` and config set `cs`. When the
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* configuration variable `key` is not found, returns NULL. The caller
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* should not free or modify the returned pointer, as it is owned by the cache.
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*/
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const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key);
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/**
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* Clears `config_set` structure, removes all saved variable-value pairs.
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*/
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void git_configset_clear(struct config_set *cs);
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/*
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* These functions return 1 if not found, and 0 if found, leaving the found
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* value in the 'dest' pointer.
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*/
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/*
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* Finds the highest-priority value for the configuration variable `key`
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* and config set `cs`, stores the pointer to it in `value` and returns 0.
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* When the configuration variable `key` is not found, returns 1 without
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* touching `value`. The caller should not free or modify `value`, as it
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* is owned by the cache.
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*/
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int git_configset_get_value(struct config_set *cs, const char *key, const char **dest);
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int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest);
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int git_configset_get_string(struct config_set *cs, const char *key, char **dest);
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int git_configset_get_int(struct config_set *cs, const char *key, int *dest);
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int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest);
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int git_configset_get_bool(struct config_set *cs, const char *key, int *dest);
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int git_configset_get_bool_or_int(struct config_set *cs, const char *key, int *is_bool, int *dest);
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int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest);
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int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest);
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/* Functions for reading a repository's config */
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struct repository;
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void repo_config(struct repository *repo, config_fn_t fn, void *data);
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int repo_config_get_value(struct repository *repo,
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const char *key, const char **value);
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const struct string_list *repo_config_get_value_multi(struct repository *repo,
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const char *key);
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int repo_config_get_string_const(struct repository *repo,
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const char *key, const char **dest);
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int repo_config_get_string(struct repository *repo,
|
|
const char *key, char **dest);
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|
int repo_config_get_int(struct repository *repo,
|
|
const char *key, int *dest);
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|
int repo_config_get_ulong(struct repository *repo,
|
|
const char *key, unsigned long *dest);
|
|
int repo_config_get_bool(struct repository *repo,
|
|
const char *key, int *dest);
|
|
int repo_config_get_bool_or_int(struct repository *repo,
|
|
const char *key, int *is_bool, int *dest);
|
|
int repo_config_get_maybe_bool(struct repository *repo,
|
|
const char *key, int *dest);
|
|
int repo_config_get_pathname(struct repository *repo,
|
|
const char *key, const char **dest);
|
|
|
|
/**
|
|
* Querying For Specific Variables
|
|
* -------------------------------
|
|
*
|
|
* For programs wanting to query for specific variables in a non-callback
|
|
* manner, the config API provides two functions `git_config_get_value`
|
|
* and `git_config_get_value_multi`. They both read values from an internal
|
|
* cache generated previously from reading the config files.
|
|
*/
|
|
|
|
/**
|
|
* Finds the highest-priority value for the configuration variable `key`,
|
|
* stores the pointer to it in `value` and returns 0. When the
|
|
* configuration variable `key` is not found, returns 1 without touching
|
|
* `value`. The caller should not free or modify `value`, as it is owned
|
|
* by the cache.
|
|
*/
|
|
int git_config_get_value(const char *key, const char **value);
|
|
|
|
/**
|
|
* Finds and returns the value list, sorted in order of increasing priority
|
|
* for the configuration variable `key`. When the configuration variable
|
|
* `key` is not found, returns NULL. The caller should not free or modify
|
|
* the returned pointer, as it is owned by the cache.
|
|
*/
|
|
const struct string_list *git_config_get_value_multi(const char *key);
|
|
|
|
/**
|
|
* Resets and invalidates the config cache.
|
|
*/
|
|
void git_config_clear(void);
|
|
|
|
/**
|
|
* Allocates and copies the retrieved string into the `dest` parameter for
|
|
* the configuration variable `key`; if NULL string is given, prints an
|
|
* error message and returns -1. When the configuration variable `key` is
|
|
* not found, returns 1 without touching `dest`.
|
|
*/
|
|
int git_config_get_string_const(const char *key, const char **dest);
|
|
|
|
/**
|
|
* Similar to `git_config_get_string_const`, except that retrieved value
|
|
* copied into the `dest` parameter is a mutable string.
|
|
*/
|
|
int git_config_get_string(const char *key, char **dest);
|
|
|
|
/**
|
|
* Finds and parses the value to an integer for the configuration variable
|
|
* `key`. Dies on error; otherwise, stores the value of the parsed integer in
|
|
* `dest` and returns 0. When the configuration variable `key` is not found,
|
|
* returns 1 without touching `dest`.
|
|
*/
|
|
int git_config_get_int(const char *key, int *dest);
|
|
|
|
/**
|
|
* Similar to `git_config_get_int` but for unsigned longs.
|
|
*/
|
|
int git_config_get_ulong(const char *key, unsigned long *dest);
|
|
|
|
/**
|
|
* Finds and parses the value into a boolean value, for the configuration
|
|
* variable `key` respecting keywords like "true" and "false". Integer
|
|
* values are converted into true/false values (when they are non-zero or
|
|
* zero, respectively). Other values cause a die(). If parsing is successful,
|
|
* stores the value of the parsed result in `dest` and returns 0. When the
|
|
* configuration variable `key` is not found, returns 1 without touching
|
|
* `dest`.
|
|
*/
|
|
int git_config_get_bool(const char *key, int *dest);
|
|
|
|
/**
|
|
* Similar to `git_config_get_bool`, except that integers are copied as-is,
|
|
* and `is_bool` flag is unset.
|
|
*/
|
|
int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest);
|
|
|
|
/**
|
|
* Similar to `git_config_get_bool`, except that it returns -1 on error
|
|
* rather than dying.
|
|
*/
|
|
int git_config_get_maybe_bool(const char *key, int *dest);
|
|
|
|
/**
|
|
* Similar to `git_config_get_string`, but expands `~` or `~user` into
|
|
* the user's home directory when found at the beginning of the path.
|
|
*/
|
|
int git_config_get_pathname(const char *key, const char **dest);
|
|
|
|
int git_config_get_index_threads(int *dest);
|
|
int git_config_get_untracked_cache(void);
|
|
int git_config_get_split_index(void);
|
|
int git_config_get_max_percent_split_change(void);
|
|
int git_config_get_fsmonitor(void);
|
|
|
|
/* This dies if the configured or default date is in the future */
|
|
int git_config_get_expiry(const char *key, const char **output);
|
|
|
|
/* parse either "this many days" integer, or "5.days.ago" approxidate */
|
|
int git_config_get_expiry_in_days(const char *key, timestamp_t *, timestamp_t now);
|
|
|
|
struct key_value_info {
|
|
const char *filename;
|
|
int linenr;
|
|
enum config_origin_type origin_type;
|
|
enum config_scope scope;
|
|
};
|
|
|
|
/**
|
|
* First prints the error message specified by the caller in `err` and then
|
|
* dies printing the line number and the file name of the highest priority
|
|
* value for the configuration variable `key`.
|
|
*/
|
|
NORETURN void git_die_config(const char *key, const char *err, ...) __attribute__((format(printf, 2, 3)));
|
|
|
|
/**
|
|
* Helper function which formats the die error message according to the
|
|
* parameters entered. Used by `git_die_config()`. It can be used by callers
|
|
* handling `git_config_get_value_multi()` to print the correct error message
|
|
* for the desired value.
|
|
*/
|
|
NORETURN void git_die_config_linenr(const char *key, const char *filename, int linenr);
|
|
|
|
#define LOOKUP_CONFIG(mapping, var) \
|
|
lookup_config(mapping, ARRAY_SIZE(mapping), var)
|
|
int lookup_config(const char **mapping, int nr_mapping, const char *var);
|
|
|
|
#endif /* CONFIG_H */
|