diff options
Diffstat (limited to 'strbuf.h')
| -rw-r--r-- | strbuf.h | 73 |
1 files changed, 21 insertions, 52 deletions
@@ -80,10 +80,6 @@ struct strbuf { extern char strbuf_slopbuf[]; #define STRBUF_INIT { .buf = strbuf_slopbuf } -/* - * Predeclare this here, since cache.h includes this file before it defines the - * struct. - */ struct object_id; /** @@ -327,58 +323,19 @@ const char *strbuf_join_argv(struct strbuf *buf, int argc, const char **argv, char delim); /** - * This function can be used to expand a format string containing - * placeholders. To that end, it parses the string and calls the specified - * function for every percent sign found. - * - * The callback function is given a pointer to the character after the `%` - * and a pointer to the struct strbuf. It is expected to add the expanded - * version of the placeholder to the strbuf, e.g. to add a newline - * character if the letter `n` appears after a `%`. The function returns - * the length of the placeholder recognized and `strbuf_expand()` skips - * over it. - * - * The format `%%` is automatically expanded to a single `%` as a quoting - * mechanism; callers do not need to handle the `%` placeholder themselves, - * and the callback function will not be invoked for this placeholder. - * - * All other characters (non-percent and not skipped ones) are copied - * verbatim to the strbuf. If the callback returned zero, meaning that the - * placeholder is unknown, then the percent sign is copied, too. - * - * In order to facilitate caching and to make it possible to give - * parameters to the callback, `strbuf_expand()` passes a context - * pointer with any kind of data. - */ -typedef size_t (*expand_fn_t) (struct strbuf *sb, - const char *placeholder, - void *context); -void strbuf_expand(struct strbuf *sb, - const char *format, - expand_fn_t fn, - void *context); - -/** - * Used as callback for `strbuf_expand` to only expand literals - * (i.e. %n and %xNN). The context argument is ignored. + * Used with `strbuf_expand_step` to expand the literals %n and %x + * followed by two hexadecimal digits. Returns the number of recognized + * characters. */ -size_t strbuf_expand_literal_cb(struct strbuf *sb, - const char *placeholder, - void *context); +size_t strbuf_expand_literal(struct strbuf *sb, const char *placeholder); /** - * Used as callback for `strbuf_expand()`, expects an array of - * struct strbuf_expand_dict_entry as context, i.e. pairs of - * placeholder and replacement string. The array needs to be - * terminated by an entry with placeholder set to NULL. + * If the string pointed to by `formatp` contains a percent sign ("%"), + * advance it to point to the character following the next one and + * return 1, otherwise return 0. Append the substring before that + * percent sign to `sb`, or the whole string if there is none. */ -struct strbuf_expand_dict_entry { - const char *placeholder; - const char *value; -}; -size_t strbuf_expand_dict_cb(struct strbuf *sb, - const char *placeholder, - void *context); +int strbuf_expand_step(struct strbuf *sb, const char **formatp); /** * Append the contents of one strbuf to another, quoting any @@ -485,6 +442,18 @@ int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint); ssize_t strbuf_write(struct strbuf *sb, FILE *stream); /** + * Read from a FILE * until the specified terminator is encountered, + * overwriting the existing contents of the strbuf. + * + * Reading stops after the terminator or at EOF. The terminator is + * removed from the buffer before returning. If the terminator is LF + * and if it is preceded by a CR, then the whole CRLF is stripped. + * Returns 0 unless there was nothing left before EOF, in which case + * it returns `EOF`. + */ +int strbuf_getdelim_strip_crlf(struct strbuf *sb, FILE *fp, int term); + +/** * Read a line from a FILE *, overwriting the existing contents of * the strbuf. The strbuf_getline*() family of functions share * this signature, but have different line termination conventions. |