mirror of
https://github.com/git/git.git
synced 2024-05-09 21:56:07 +02:00
dbbcd44fb4
This requires updating #include lines across the code-base, but that's all fairly mechanical, and was done with: git ls-files '*.c' '*.h' | xargs perl -i -pe 's/argv-array.h/strvec.h/' Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
103 lines
3.2 KiB
C
103 lines
3.2 KiB
C
#ifndef STRVEC_H
|
|
#define STRVEC_H
|
|
|
|
/**
|
|
* The argv-array API allows one to dynamically build and store
|
|
* NULL-terminated lists. An argv-array maintains the invariant that the
|
|
* `argv` member always points to a non-NULL array, and that the array is
|
|
* always NULL-terminated at the element pointed to by `argv[argc]`. This
|
|
* makes the result suitable for passing to functions expecting to receive
|
|
* argv from main().
|
|
*
|
|
* The string-list API (documented in string-list.h) is similar, but cannot be
|
|
* used for these purposes; instead of storing a straight string pointer,
|
|
* it contains an item structure with a `util` field that is not compatible
|
|
* with the traditional argv interface.
|
|
*
|
|
* Each `strvec` manages its own memory. Any strings pushed into the
|
|
* array are duplicated, and all memory is freed by strvec_clear().
|
|
*/
|
|
|
|
extern const char *empty_strvec[];
|
|
|
|
/**
|
|
* A single array. This should be initialized by assignment from
|
|
* `STRVEC_INIT`, or by calling `strvec_init`. The `argv`
|
|
* member contains the actual array; the `argc` member contains the
|
|
* number of elements in the array, not including the terminating
|
|
* NULL.
|
|
*/
|
|
struct strvec {
|
|
const char **argv;
|
|
size_t argc;
|
|
size_t alloc;
|
|
};
|
|
|
|
#define STRVEC_INIT { empty_strvec, 0, 0 }
|
|
|
|
/**
|
|
* Initialize an array. This is no different than assigning from
|
|
* `STRVEC_INIT`.
|
|
*/
|
|
void strvec_init(struct strvec *);
|
|
|
|
/* Push a copy of a string onto the end of the array. */
|
|
const char *strvec_push(struct strvec *, const char *);
|
|
|
|
/**
|
|
* Format a string and push it onto the end of the array. This is a
|
|
* convenience wrapper combining `strbuf_addf` and `strvec_push`.
|
|
*/
|
|
__attribute__((format (printf,2,3)))
|
|
const char *strvec_pushf(struct strvec *, const char *fmt, ...);
|
|
|
|
/**
|
|
* Push a list of strings onto the end of the array. The arguments
|
|
* should be a list of `const char *` strings, terminated by a NULL
|
|
* argument.
|
|
*/
|
|
LAST_ARG_MUST_BE_NULL
|
|
void strvec_pushl(struct strvec *, ...);
|
|
|
|
/* Push a null-terminated array of strings onto the end of the array. */
|
|
void strvec_pushv(struct strvec *, const char **);
|
|
|
|
/**
|
|
* Remove the final element from the array. If there are no
|
|
* elements in the array, do nothing.
|
|
*/
|
|
void strvec_pop(struct strvec *);
|
|
|
|
/* Splits by whitespace; does not handle quoted arguments! */
|
|
void strvec_split(struct strvec *, const char *);
|
|
|
|
/**
|
|
* Free all memory associated with the array and return it to the
|
|
* initial, empty state.
|
|
*/
|
|
void strvec_clear(struct strvec *);
|
|
|
|
/**
|
|
* Disconnect the `argv` member from the `strvec` struct and
|
|
* return it. The caller is responsible for freeing the memory used
|
|
* by the array, and by the strings it references. After detaching,
|
|
* the `strvec` is in a reinitialized state and can be pushed
|
|
* into again.
|
|
*/
|
|
const char **strvec_detach(struct strvec *);
|
|
|
|
/* compatibility for historic argv_array interface */
|
|
#define argv_array strvec
|
|
#define ARGV_ARRAY_INIT STRVEC_INIT
|
|
#define argv_array_init strvec_init
|
|
#define argv_array_push strvec_push
|
|
#define argv_array_pushf strvec_pushf
|
|
#define argv_array_pushl strvec_pushl
|
|
#define argv_array_pushv strvec_pushv
|
|
#define argv_array_pop strvec_pop
|
|
#define argv_array_split strvec_split
|
|
#define argv_array_clear strvec_clear
|
|
#define argv_array_detach strvec_detach
|
|
|
|
#endif /* STRVEC_H */
|