mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-11-28 13:44:12 +01:00
fd3ffe35a2
This commit adds a structured output printer for Lisp
S-Expressions. Later commits will use this printer in notmuch search,
show and reply.
The structure is the same as json, but:
- arrays are written as lists: ("foo" "bar" "baaz" 1 2 3)
- maps are written as p-lists: (:key "value" :other-key "other-value")
- true is written as t
- false is written as nil
- null is written as nil
[ whitespace changes by db ]
77 lines
2.7 KiB
C
77 lines
2.7 KiB
C
#ifndef NOTMUCH_SPRINTER_H
|
|
#define NOTMUCH_SPRINTER_H
|
|
|
|
/* Necessary for notmuch_bool_t */
|
|
#include "notmuch-client.h"
|
|
|
|
/* Structure printer interface. This is used to create output
|
|
* structured as maps (with key/value pairs), lists and primitives
|
|
* (strings, integers and booleans).
|
|
*/
|
|
typedef struct sprinter {
|
|
/* Start a new map/dictionary structure. This should be followed by
|
|
* a sequence of alternating calls to map_key and one of the
|
|
* value-printing functions until the map is ended by end.
|
|
*/
|
|
void (*begin_map) (struct sprinter *);
|
|
|
|
/* Start a new list/array structure.
|
|
*/
|
|
void (*begin_list) (struct sprinter *);
|
|
|
|
/* End the last opened list or map structure.
|
|
*/
|
|
void (*end) (struct sprinter *);
|
|
|
|
/* Print one string/integer/boolean/null element (possibly inside
|
|
* a list or map, followed or preceded by separators). For string
|
|
* and string_len, the char * must be UTF-8 encoded. string_len
|
|
* allows non-terminated strings and strings with embedded NULs
|
|
* (though the handling of the latter is format-dependent). For
|
|
* string (but not string_len) the string pointer passed may be
|
|
* NULL.
|
|
*/
|
|
void (*string) (struct sprinter *, const char *);
|
|
void (*string_len) (struct sprinter *, const char *, size_t);
|
|
void (*integer) (struct sprinter *, int);
|
|
void (*boolean) (struct sprinter *, notmuch_bool_t);
|
|
void (*null) (struct sprinter *);
|
|
|
|
/* Print the key of a map's key/value pair. The char * must be UTF-8
|
|
* encoded.
|
|
*/
|
|
void (*map_key) (struct sprinter *, const char *);
|
|
|
|
/* Insert a separator (usually extra whitespace) for improved
|
|
* readability without affecting the abstract syntax of the
|
|
* structure being printed.
|
|
* For JSON, this could simply be a line break.
|
|
*/
|
|
void (*separator) (struct sprinter *);
|
|
|
|
/* Set the current string prefix. This only affects the text
|
|
* printer, which will print this string, followed by a colon,
|
|
* before any string. For other printers, this does nothing.
|
|
*/
|
|
void (*set_prefix) (struct sprinter *, const char *);
|
|
|
|
/* True if this is the special-cased plain text printer.
|
|
*/
|
|
notmuch_bool_t is_text_printer;
|
|
} sprinter_t;
|
|
|
|
|
|
/* Create a new unstructured printer that emits the default text format
|
|
* for "notmuch search". */
|
|
struct sprinter *
|
|
sprinter_text_create (const void *ctx, FILE *stream);
|
|
|
|
/* Create a new structure printer that emits JSON. */
|
|
struct sprinter *
|
|
sprinter_json_create (const void *ctx, FILE *stream);
|
|
|
|
/* Create a new structure printer that emits S-Expressions. */
|
|
struct sprinter *
|
|
sprinter_sexp_create (const void *ctx, FILE *stream);
|
|
|
|
#endif // NOTMUCH_SPRINTER_H
|