config.h

   1 #ifndef CONFIG_H
   2 #define CONFIG_H
   3
   4 #include "hashmap.h"
   5 #include "string-list.h"
   6
   7
   8 /**
   9  * The config API gives callers a way to access Git configuration files
  10  * (and files which have the same syntax).
  11  *
  12  * General Usage
  13  * -------------
  14  *
  15  * Config files are parsed linearly, and each variable found is passed to a
  16  * caller-provided callback function. The callback function is responsible
  17  * for any actions to be taken on the config option, and is free to ignore
  18  * some options. It is not uncommon for the configuration to be parsed
  19  * several times during the run of a Git program, with different callbacks
  20  * picking out different variables useful to themselves.
  21  */
  22
  23 struct object_id;
  24
  25 /* git_config_parse_key() returns these negated: */
  26 #define CONFIG_INVALID_KEY 1
  27 #define CONFIG_NO_SECTION_OR_NAME 2
  28 /* git_config_set_gently(), git_config_set_multivar_gently() return the above or these: */
  29 #define CONFIG_NO_LOCK -1
  30 #define CONFIG_INVALID_FILE 3
  31 #define CONFIG_NO_WRITE 4
  32 #define CONFIG_NOTHING_SET 5
  33 #define CONFIG_INVALID_PATTERN 6
  34 #define CONFIG_GENERIC_ERROR 7
  35
  36 #define CONFIG_REGEX_NONE ((void *)1)
  37
  38 enum config_scope {
  39         CONFIG_SCOPE_UNKNOWN = 0,
  40         CONFIG_SCOPE_SYSTEM,
  41         CONFIG_SCOPE_GLOBAL,
  42         CONFIG_SCOPE_LOCAL,
  43         CONFIG_SCOPE_WORKTREE,
  44         CONFIG_SCOPE_COMMAND,
  45         CONFIG_SCOPE_SUBMODULE,
  46 };
  47 const char *config_scope_name(enum config_scope scope);
  48
  49 struct git_config_source {
  50         unsigned int use_stdin:1;
  51         const char *file;
  52         const char *blob;
  53         enum config_scope scope;
  54 };
  55
  56 enum config_origin_type {
  57         CONFIG_ORIGIN_BLOB,
  58         CONFIG_ORIGIN_FILE,
  59         CONFIG_ORIGIN_STDIN,
  60         CONFIG_ORIGIN_SUBMODULE_BLOB,
  61         CONFIG_ORIGIN_CMDLINE
  62 };
  63
  64 enum config_event_t {
  65         CONFIG_EVENT_SECTION,
  66         CONFIG_EVENT_ENTRY,
  67         CONFIG_EVENT_WHITESPACE,
  68         CONFIG_EVENT_COMMENT,
  69         CONFIG_EVENT_EOF,
  70         CONFIG_EVENT_ERROR
  71 };
  72
  73 /*
  74  * The parser event function (if not NULL) is called with the event type and
  75  * the begin/end offsets of the parsed elements.
  76  *
  77  * Note: for CONFIG_EVENT_ENTRY (i.e. config variables), the trailing newline
  78  * character is considered part of the element.
  79  */
  80 typedef int (*config_parser_event_fn_t)(enum config_event_t type,
  81                                         size_t begin_offset, size_t end_offset,
  82                                         void *event_fn_data);
  83
  84 struct config_options {
  85         unsigned int respect_includes : 1;
  86         unsigned int ignore_repo : 1;
  87         unsigned int ignore_worktree : 1;
  88         unsigned int ignore_cmdline : 1;
  89         unsigned int system_gently : 1;
  90         const char *commondir;
  91         const char *git_dir;
  92         config_parser_event_fn_t event_fn;
  93         void *event_fn_data;
  94         enum config_error_action {
  95                 CONFIG_ERROR_UNSET = 0, /* use source-specific default */
  96                 CONFIG_ERROR_DIE, /* die() on error */
  97                 CONFIG_ERROR_ERROR, /* error() on error, return -1 */
  98                 CONFIG_ERROR_SILENT, /* return -1 */
  99         } error_action;
 100 };
 101
 102 /**
 103  * A config callback function takes three parameters:
 104  *
 105  * - the name of the parsed variable. This is in canonical "flat" form: the
 106  *   section, subsection, and variable segments will be separated by dots,
 107  *   and the section and variable segments will be all lowercase. E.g.,
 108  *   `core.ignorecase`, `diff.SomeType.textconv`.
 109  *
 110  * - the value of the found variable, as a string. If the variable had no
 111  *   value specified, the value will be NULL (typically this means it
 112  *   should be interpreted as boolean true).
 113  *
 114  * - a void pointer passed in by the caller of the config API; this can
 115  *   contain callback-specific data
 116  *
 117  * A config callback should return 0 for success, or -1 if the variable
 118  * could not be parsed properly.
 119  */
 120 typedef int (*config_fn_t)(const char *, const char *, void *);
 121
 122 int git_default_config(const char *, const char *, void *);
 123
 124 /**
 125  * Read a specific file in git-config format.
 126  * This function takes the same callback and data parameters as `git_config`.
 127  */
 128 int git_config_from_file(config_fn_t fn, const char *, void *);
 129
 130 int git_config_from_file_with_options(config_fn_t fn, const char *,
 131                                       void *,
 132                                       const struct config_options *);
 133 int git_config_from_mem(config_fn_t fn,
 134                         const enum config_origin_type,
 135                         const char *name,
 136                         const char *buf, size_t len,
 137                         void *data, const struct config_options *opts);
 138 int git_config_from_blob_oid(config_fn_t fn, const char *name,
 139                              const struct object_id *oid, void *data);
 140 void git_config_push_parameter(const char *text);
 141 void git_config_push_env(const char *spec);
 142 int git_config_from_parameters(config_fn_t fn, void *data);
 143 void read_early_config(config_fn_t cb, void *data);
 144 void read_very_early_config(config_fn_t cb, void *data);
 145
 146 /**
 147  * Most programs will simply want to look up variables in all config files
 148  * that Git knows about, using the normal precedence rules. To do this,
 149  * call `git_config` with a callback function and void data pointer.
 150  *
 151  * `git_config` will read all config sources in order of increasing
 152  * priority. Thus a callback should typically overwrite previously-seen
 153  * entries with new ones (e.g., if both the user-wide `~/.gitconfig` and
 154  * repo-specific `.git/config` contain `color.ui`, the config machinery
 155  * will first feed the user-wide one to the callback, and then the
 156  * repo-specific one; by overwriting, the higher-priority repo-specific
 157  * value is left at the end).
 158  */
 159 void git_config(config_fn_t fn, void *);
 160
 161 /**
 162  * Lets the caller examine config while adjusting some of the default
 163  * behavior of `git_config`. It should almost never be used by "regular"
 164  * Git code that is looking up configuration variables.
 165  * It is intended for advanced callers like `git-config`, which are
 166  * intentionally tweaking the normal config-lookup process.
 167  * It takes two extra parameters:
 168  *
 169  * - `config_source`
 170  * If this parameter is non-NULL, it specifies the source to parse for
 171  * configuration, rather than looking in the usual files. See `struct
 172  * git_config_source` in `config.h` for details. Regular `git_config` defaults
 173  * to `NULL`.
 174  *
 175  * - `opts`
 176  * Specify options to adjust the behavior of parsing config files. See `struct
 177  * config_options` in `config.h` for details. As an example: regular `git_config`
 178  * sets `opts.respect_includes` to `1` by default.
 179  */
 180 int config_with_options(config_fn_t fn, void *,
 181                         struct git_config_source *config_source,
 182                         const struct config_options *opts);
 183
 184 /**
 185  * Value Parsing Helpers
 186  * ---------------------
 187  *
 188  * The following helper functions aid in parsing string values
 189  */
 190
 191 int git_parse_ssize_t(const char *, ssize_t *);
 192 int git_parse_ulong(const char *, unsigned long *);
 193
 194 /**
 195  * Same as `git_config_bool`, except that it returns -1 on error rather
 196  * than dying.
 197  */
 198 int git_parse_maybe_bool(const char *);
 199
 200 /**
 201  * Parse the string to an integer, including unit factors. Dies on error;
 202  * otherwise, returns the parsed result.
 203  */
 204 int git_config_int(const char *, const char *);
 205
 206 int64_t git_config_int64(const char *, const char *);
 207
 208 /**
 209  * Identical to `git_config_int`, but for unsigned longs.
 210  */
 211 unsigned long git_config_ulong(const char *, const char *);
 212
 213 ssize_t git_config_ssize_t(const char *, const char *);
 214
 215 /**
 216  * Same as `git_config_bool`, except that integers are returned as-is, and
 217  * an `is_bool` flag is unset.
 218  */
 219 int git_config_bool_or_int(const char *, const char *, int *);
 220
 221 /**
 222  * Parse a string into a boolean value, respecting keywords like "true" and
 223  * "false". Integer values are converted into true/false values (when they
 224  * are non-zero or zero, respectively). Other values cause a die(). If
 225  * parsing is successful, the return value is the result.
 226  */
 227 int git_config_bool(const char *, const char *);
 228
 229 /**
 230  * Allocates and copies the value string into the `dest` parameter; if no
 231  * string is given, prints an error message and returns -1.
 232  */
 233 int git_config_string(const char **, const char *, const char *);
 234
 235 /**
 236  * Similar to `git_config_string`, but expands `~` or `~user` into the
 237  * user's home directory when found at the beginning of the path.
 238  */
 239 int git_config_pathname(const char **, const char *, const char *);
 240
 241 int git_config_expiry_date(timestamp_t *, const char *, const char *);
 242 int git_config_color(char *, const char *, const char *);
 243 int git_config_set_in_file_gently(const char *, const char *, const char *);
 244
 245 /**
 246  * write config values to a specific config file, takes a key/value pair as
 247  * parameter.
 248  */
 249 void git_config_set_in_file(const char *, const char *, const char *);
 250
 251 int git_config_set_gently(const char *, const char *);
 252
 253 /**
 254  * write config values to `.git/config`, takes a key/value pair as parameter.
 255  */
 256 void git_config_set(const char *, const char *);
 257
 258 int git_config_parse_key(const char *, char **, size_t *);
 259 int git_config_key_is_valid(const char *key);
 260
 261 /*
 262  * The following macros specify flag bits that alter the behavior
 263  * of the git_config_set_multivar*() methods.
 264  */
 265
 266 /*
 267  * When CONFIG_FLAGS_MULTI_REPLACE is specified, all matching key/values
 268  * are removed before a single new pair is written. If the flag is not
 269  * present, then set operations replace only the first match.
 270  */
 271 #define CONFIG_FLAGS_MULTI_REPLACE (1 << 0)
 272
 273 /*
 274  * When CONFIG_FLAGS_FIXED_VALUE is specified, match key/value pairs
 275  * by string comparison (not regex match) to the provided value_pattern
 276  * parameter.
 277  */
 278 #define CONFIG_FLAGS_FIXED_VALUE (1 << 1)
 279
 280 int git_config_set_multivar_gently(const char *, const char *, const char *, unsigned);
 281 void git_config_set_multivar(const char *, const char *, const char *, unsigned);
 282 int git_config_set_multivar_in_file_gently(const char *, const char *, const char *, const char *, unsigned);
 283
 284 /**
 285  * takes four parameters:
 286  *
 287  * - the name of the file, as a string, to which key/value pairs will be written.
 288  *
 289  * - the name of key, as a string. This is in canonical "flat" form: the section,
 290  *   subsection, and variable segments will be separated by dots, and the section
 291  *   and variable segments will be all lowercase.
 292  *   E.g., `core.ignorecase`, `diff.SomeType.textconv`.
 293  *
 294  * - the value of the variable, as a string. If value is equal to NULL, it will
 295  *   remove the matching key from the config file.
 296  *
 297  * - the value regex, as a string. It will disregard key/value pairs where value
 298  *   does not match.
 299  *
 300  * - a flags value with bits corresponding to the CONFIG_FLAG_* macros.
 301  *
 302  * It returns 0 on success.
 303  */
 304 void git_config_set_multivar_in_file(const char *config_filename,
 305                                      const char *key,
 306                                      const char *value,
 307                                      const char *value_pattern,
 308                                      unsigned flags);
 309
 310 /**
 311  * rename or remove sections in the config file
 312  * parameters `old_name` and `new_name`
 313  * If NULL is passed through `new_name` parameter,
 314  * the section will be removed from the config file.
 315  */
 316 int git_config_rename_section(const char *, const char *);
 317
 318 int git_config_rename_section_in_file(const char *, const char *, const char *);
 319 int git_config_copy_section(const char *, const char *);
 320 int git_config_copy_section_in_file(const char *, const char *, const char *);
 321 const char *git_etc_gitconfig(void);
 322 int git_env_bool(const char *, int);
 323 unsigned long git_env_ulong(const char *, unsigned long);
 324 int git_config_system(void);
 325 int config_error_nonbool(const char *);
 326 #if defined(__GNUC__)
 327 #define config_error_nonbool(s) (config_error_nonbool(s), const_error())
 328 #endif
 329
 330 int git_config_parse_parameter(const char *, config_fn_t fn, void *data);
 331
 332 enum config_scope current_config_scope(void);
 333 const char *current_config_origin_type(void);
 334 const char *current_config_name(void);
 335 int current_config_line(void);
 336
 337 /**
 338  * Include Directives
 339  * ------------------
 340  *
 341  * By default, the config parser does not respect include directives.
 342  * However, a caller can use the special `git_config_include` wrapper
 343  * callback to support them. To do so, you simply wrap your "real" callback
 344  * function and data pointer in a `struct config_include_data`, and pass
 345  * the wrapper to the regular config-reading functions. For example:
 346  *
 347  * -------------------------------------------
 348  * int read_file_with_include(const char *file, config_fn_t fn, void *data)
 349  * {
 350  * struct config_include_data inc = CONFIG_INCLUDE_INIT;
 351  * inc.fn = fn;
 352  * inc.data = data;
 353  * return git_config_from_file(git_config_include, file, &inc);
 354  * }
 355  * -------------------------------------------
 356  *
 357  * `git_config` respects includes automatically. The lower-level
 358  * `git_config_from_file` does not.
 359  *
 360  */
 361 struct config_include_data {
 362         int depth;
 363         config_fn_t fn;
 364         void *data;
 365         const struct config_options *opts;
 366 };
 367 #define CONFIG_INCLUDE_INIT { 0 }
 368 int git_config_include(const char *name, const char *value, void *data);
 369
 370 /*
 371  * Match and parse a config key of the form:
 372  *
 373  *   section.(subsection.)?key
 374  *
 375  * (i.e., what gets handed to a config_fn_t). The caller provides the section;
 376  * we return -1 if it does not match, 0 otherwise. The subsection and key
 377  * out-parameters are filled by the function (and *subsection is NULL if it is
 378  * missing).
 379  *
 380  * If the subsection pointer-to-pointer passed in is NULL, returns 0 only if
 381  * there is no subsection at all.
 382  */
 383 int parse_config_key(const char *var,
 384                      const char *section,
 385                      const char **subsection, size_t *subsection_len,
 386                      const char **key);
 387
 388 /**
 389  * Custom Configsets
 390  * -----------------
 391  *
 392  * A `config_set` can be used to construct an in-memory cache for
 393  * config-like files that the caller specifies (i.e., files like `.gitmodules`,
 394  * `~/.gitconfig` etc.). For example,
 395  *
 396  * ----------------------------------------
 397  * struct config_set gm_config;
 398  * git_configset_init(&gm_config);
 399  * int b;
 400  * //we add config files to the config_set
 401  * git_configset_add_file(&gm_config, ".gitmodules");
 402  * git_configset_add_file(&gm_config, ".gitmodules_alt");
 403  *
 404  * if (!git_configset_get_bool(gm_config, "submodule.frotz.ignore", &b)) {
 405  * //hack hack hack
 406  * }
 407  *
 408  * when we are done with the configset:
 409  * git_configset_clear(&gm_config);
 410  * ----------------------------------------
 411  *
 412  * Configset API provides functions for the above mentioned work flow
 413  */
 414
 415 struct config_set_element {
 416         struct hashmap_entry ent;
 417         char *key;
 418         struct string_list value_list;
 419 };
 420
 421 struct configset_list_item {
 422         struct config_set_element *e;
 423         int value_index;
 424 };
 425
 426 /*
 427  * the contents of the list are ordered according to their
 428  * position in the config files and order of parsing the files.
 429  * (i.e. key-value pair at the last position of .git/config will
 430  * be at the last item of the list)
 431  */
 432 struct configset_list {
 433         struct configset_list_item *items;
 434         unsigned int nr, alloc;
 435 };
 436
 437 struct config_set {
 438         struct hashmap config_hash;
 439         int hash_initialized;
 440         struct configset_list list;
 441 };
 442
 443 /**
 444  * Initializes the config_set `cs`.
 445  */
 446 void git_configset_init(struct config_set *cs);
 447
 448 /**
 449  * Parses the file and adds the variable-value pairs to the `config_set`,
 450  * dies if there is an error in parsing the file. Returns 0 on success, or
 451  * -1 if the file does not exist or is inaccessible. The user has to decide
 452  * if he wants to free the incomplete configset or continue using it when
 453  * the function returns -1.
 454  */
 455 int git_configset_add_file(struct config_set *cs, const char *filename);
 456
 457 /**
 458  * Finds and returns the value list, sorted in order of increasing priority
 459  * for the configuration variable `key` and config set `cs`. When the
 460  * configuration variable `key` is not found, returns NULL. The caller
 461  * should not free or modify the returned pointer, as it is owned by the cache.
 462  */
 463 const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key);
 464
 465 /**
 466  * Clears `config_set` structure, removes all saved variable-value pairs.
 467  */
 468 void git_configset_clear(struct config_set *cs);
 469
 470 /*
 471  * These functions return 1 if not found, and 0 if found, leaving the found
 472  * value in the 'dest' pointer.
 473  */
 474
 475 /*
 476  * Finds the highest-priority value for the configuration variable `key`
 477  * and config set `cs`, stores the pointer to it in `value` and returns 0.
 478  * When the configuration variable `key` is not found, returns 1 without
 479  * touching `value`. The caller should not free or modify `value`, as it
 480  * is owned by the cache.
 481  */
 482 int git_configset_get_value(struct config_set *cs, const char *key, const char **dest);
 483
 484 int git_configset_get_string(struct config_set *cs, const char *key, char **dest);
 485 int git_configset_get_string_tmp(struct config_set *cs, const char *key, const char **dest);
 486 int git_configset_get_int(struct config_set *cs, const char *key, int *dest);
 487 int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest);
 488 int git_configset_get_bool(struct config_set *cs, const char *key, int *dest);
 489 int git_configset_get_bool_or_int(struct config_set *cs, const char *key, int *is_bool, int *dest);
 490 int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest);
 491 int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest);
 492
 493 /* Functions for reading a repository's config */
 494 struct repository;
 495 void repo_config(struct repository *repo, config_fn_t fn, void *data);
 496 int repo_config_get_value(struct repository *repo,
 497                           const char *key, const char **value);
 498 const struct string_list *repo_config_get_value_multi(struct repository *repo,
 499                                                       const char *key);
 500 int repo_config_get_string(struct repository *repo,
 501                            const char *key, char **dest);
 502 int repo_config_get_string_tmp(struct repository *repo,
 503                                const char *key, const char **dest);
 504 int repo_config_get_int(struct repository *repo,
 505                         const char *key, int *dest);
 506 int repo_config_get_ulong(struct repository *repo,
 507                           const char *key, unsigned long *dest);
 508 int repo_config_get_bool(struct repository *repo,
 509                          const char *key, int *dest);
 510 int repo_config_get_bool_or_int(struct repository *repo,
 511                                 const char *key, int *is_bool, int *dest);
 512 int repo_config_get_maybe_bool(struct repository *repo,
 513                                const char *key, int *dest);
 514 int repo_config_get_pathname(struct repository *repo,
 515                              const char *key, const char **dest);
 516
 517 /**
 518  * Querying For Specific Variables
 519  * -------------------------------
 520  *
 521  * For programs wanting to query for specific variables in a non-callback
 522  * manner, the config API provides two functions `git_config_get_value`
 523  * and `git_config_get_value_multi`. They both read values from an internal
 524  * cache generated previously from reading the config files.
 525  */
 526
 527 /**
 528  * Finds the highest-priority value for the configuration variable `key`,
 529  * stores the pointer to it in `value` and returns 0. When the
 530  * configuration variable `key` is not found, returns 1 without touching
 531  * `value`. The caller should not free or modify `value`, as it is owned
 532  * by the cache.
 533  */
 534 int git_config_get_value(const char *key, const char **value);
 535
 536 /**
 537  * Finds and returns the value list, sorted in order of increasing priority
 538  * for the configuration variable `key`. When the configuration variable
 539  * `key` is not found, returns NULL. The caller should not free or modify
 540  * the returned pointer, as it is owned by the cache.
 541  */
 542 const struct string_list *git_config_get_value_multi(const char *key);
 543
 544 /**
 545  * Resets and invalidates the config cache.
 546  */
 547 void git_config_clear(void);
 548
 549 /**
 550  * Allocates and copies the retrieved string into the `dest` parameter for
 551  * the configuration variable `key`; if NULL string is given, prints an
 552  * error message and returns -1. When the configuration variable `key` is
 553  * not found, returns 1 without touching `dest`.
 554  */
 555 int git_config_get_string(const char *key, char **dest);
 556
 557 /**
 558  * Similar to `git_config_get_string`, but does not allocate any new
 559  * memory; on success `dest` will point to memory owned by the config
 560  * machinery, which could be invalidated if it is discarded and reloaded.
 561  */
 562 int git_config_get_string_tmp(const char *key, const char **dest);
 563
 564 /**
 565  * Finds and parses the value to an integer for the configuration variable
 566  * `key`. Dies on error; otherwise, stores the value of the parsed integer in
 567  * `dest` and returns 0. When the configuration variable `key` is not found,
 568  * returns 1 without touching `dest`.
 569  */
 570 int git_config_get_int(const char *key, int *dest);
 571
 572 /**
 573  * Similar to `git_config_get_int` but for unsigned longs.
 574  */
 575 int git_config_get_ulong(const char *key, unsigned long *dest);
 576
 577 /**
 578  * Finds and parses the value into a boolean value, for the configuration
 579  * variable `key` respecting keywords like "true" and "false". Integer
 580  * values are converted into true/false values (when they are non-zero or
 581  * zero, respectively). Other values cause a die(). If parsing is successful,
 582  * stores the value of the parsed result in `dest` and returns 0. When the
 583  * configuration variable `key` is not found, returns 1 without touching
 584  * `dest`.
 585  */
 586 int git_config_get_bool(const char *key, int *dest);
 587
 588 /**
 589  * Similar to `git_config_get_bool`, except that integers are copied as-is,
 590  * and `is_bool` flag is unset.
 591  */
 592 int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest);
 593
 594 /**
 595  * Similar to `git_config_get_bool`, except that it returns -1 on error
 596  * rather than dying.
 597  */
 598 int git_config_get_maybe_bool(const char *key, int *dest);
 599
 600 /**
 601  * Similar to `git_config_get_string`, but expands `~` or `~user` into
 602  * the user's home directory when found at the beginning of the path.
 603  */
 604 int git_config_get_pathname(const char *key, const char **dest);
 605
 606 int git_config_get_index_threads(int *dest);
 607 int git_config_get_untracked_cache(void);
 608 int git_config_get_split_index(void);
 609 int git_config_get_max_percent_split_change(void);
 610 int git_config_get_fsmonitor(void);
 611
 612 /* This dies if the configured or default date is in the future */
 613 int git_config_get_expiry(const char *key, const char **output);
 614
 615 /* parse either "this many days" integer, or "5.days.ago" approxidate */
 616 int git_config_get_expiry_in_days(const char *key, timestamp_t *, timestamp_t now);
 617
 618 struct key_value_info {
 619         const char *filename;
 620         int linenr;
 621         enum config_origin_type origin_type;
 622         enum config_scope scope;
 623 };
 624
 625 /**
 626  * First prints the error message specified by the caller in `err` and then
 627  * dies printing the line number and the file name of the highest priority
 628  * value for the configuration variable `key`.
 629  */
 630 NORETURN void git_die_config(const char *key, const char *err, ...) __attribute__((format(printf, 2, 3)));
 631
 632 /**
 633  * Helper function which formats the die error message according to the
 634  * parameters entered. Used by `git_die_config()`. It can be used by callers
 635  * handling `git_config_get_value_multi()` to print the correct error message
 636  * for the desired value.
 637  */
 638 NORETURN void git_die_config_linenr(const char *key, const char *filename, int linenr);
 639
 640 #define LOOKUP_CONFIG(mapping, var) \
 641         lookup_config(mapping, ARRAY_SIZE(mapping), var)
 642 int lookup_config(const char **mapping, int nr_mapping, const char *var);
 643
 644 #endif /* CONFIG_H */