7dc2266c2f
--print-format currently uses printf-style format strings, which have
limited namespace (a-zA-Z), low flexibility (depends-with-version and
depends-without-version have to be different sequences), and are
difficult to remember (is %d depends or description?).
Python/Rust format strings allow full word substitutions. In addition,
the mfmt.c library being used makes it possible to extend the standard
formatting for much greater control. For example, we can allow nested
templates so that instead of having "{depends}" and
"{depends-without-version}" variants, we can allow something like
"{depends<{name}={version}: {description}>}".
For example:
pacman -Sp --pformat="{name}: {description} ({packager})" pacman
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
#include <stdio.h>
|
|
#include <stddef.h>
|
|
#include <inttypes.h>
|
|
|
|
typedef enum mfmt_token_type_t {
|
|
MFMT_TOKEN_LITERAL,
|
|
MFMT_TOKEN_CALLBACK,
|
|
} mfmt_token_type_t;
|
|
|
|
typedef struct mfmt_token_literal_t {
|
|
mfmt_token_type_t type;
|
|
char *string;
|
|
} mfmt_token_literal_t;
|
|
|
|
typedef struct mfmt_token_base_t {
|
|
mfmt_token_type_t type;
|
|
} mfmt_token_base_t;
|
|
|
|
typedef struct mfmt_token_callback_t {
|
|
mfmt_token_type_t type;
|
|
|
|
size_t position;
|
|
char *name;
|
|
size_t width;
|
|
size_t precision;
|
|
char align;
|
|
char fill;
|
|
char conversion;
|
|
int sign;
|
|
} mfmt_token_callback_t;
|
|
|
|
typedef union mfmt_token_t {
|
|
mfmt_token_base_t base;
|
|
mfmt_token_literal_t literal;
|
|
mfmt_token_callback_t callback;
|
|
} mfmt_token_t;
|
|
|
|
typedef size_t (mfmt_callback_t)(FILE *f, mfmt_token_callback_t *token, void *ctx, void *args);
|
|
|
|
typedef struct mfmt_t {
|
|
mfmt_callback_t *cb;
|
|
void *ctx;
|
|
size_t token_count;
|
|
mfmt_token_t *tokens;
|
|
} mfmt_t;
|
|
|
|
typedef struct mfmt_val_t {
|
|
const char *name;
|
|
const char *string;
|
|
} mfmt_val_t;
|
|
|
|
mfmt_t *mfmt_parse(const char *tmpl, mfmt_callback_t *cb, void *ctx);
|
|
size_t mfmt_printf(mfmt_t *mfmt, void *args, FILE *f);
|
|
size_t mfmt_printd(mfmt_t *mfmt, void *args, int fd);
|
|
size_t mfmt_printb(mfmt_t *mfmt, void *args, char *buf, size_t buflen);
|
|
size_t mfmt_prints(mfmt_t *mfmt, void *args, char **buf, size_t *buflen);
|
|
void mfmt_free(mfmt_t *mfmt);
|
|
|
|
size_t mfmt_render_int(mfmt_token_callback_t *token, intmax_t i, FILE *f);
|
|
size_t mfmt_render_uint(mfmt_token_callback_t *token, uintmax_t i, FILE *f);
|
|
size_t mfmt_render_str(mfmt_token_callback_t *token, const char *str, FILE *f);
|
|
|
|
size_t mfmt_formatf(const char *tmpl, mfmt_callback_t *cb, void *ctx, FILE *f);
|
|
size_t mfmt_formatd(const char *tmpl, mfmt_callback_t *cb, void *ctx, int fd);
|
|
size_t mfmt_formatb(const char *tmpl, mfmt_callback_t *cb, void *ctx, char *buf, size_t buflen);
|
|
size_t mfmt_formats(const char *tmpl, mfmt_callback_t *cb, void *ctx, char **buf);
|