diff options
Diffstat (limited to 'strbuf.h')
| -rw-r--r-- | strbuf.h | 130 |
1 files changed, 37 insertions, 93 deletions
@@ -1,6 +1,14 @@ #ifndef STRBUF_H #define STRBUF_H +/* + * NOTE FOR STRBUF DEVELOPERS + * + * strbuf is a low-level primitive; as such it should interact only + * with other low-level primitives. Do not introduce new functions + * which interact with higher-level APIs. + */ + struct string_list; /** @@ -72,10 +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; /** @@ -283,7 +287,8 @@ void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, * by a comment character and a blank. */ void strbuf_add_commented_lines(struct strbuf *out, - const char *buf, size_t size); + const char *buf, size_t size, + char comment_line_char); /** @@ -318,58 +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 @@ -412,8 +378,8 @@ void strbuf_addf(struct strbuf *sb, const char *fmt, ...); * Add a formatted string prepended by a comment character and a * blank to the buffer. */ -__attribute__((format (printf, 2, 3))) -void strbuf_commented_addf(struct strbuf *sb, const char *fmt, ...); +__attribute__((format (printf, 3, 4))) +void strbuf_commented_addf(struct strbuf *sb, char comment_line_char, const char *fmt, ...); __attribute__((format (printf,2,0))) void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap); @@ -476,6 +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. @@ -528,28 +506,6 @@ int strbuf_getwholeline_fd(struct strbuf *sb, int fd, int term); int strbuf_getcwd(struct strbuf *sb); /** - * Add a path to a buffer, converting a relative path to an - * absolute one in the process. Symbolic links are not - * resolved. - */ -void strbuf_add_absolute_path(struct strbuf *sb, const char *path); - -/** - * Canonize `path` (make it absolute, resolve symlinks, remove extra - * slashes) and append it to `sb`. Die with an informative error - * message if there is a problem. - * - * The directory part of `path` (i.e., everything up to the last - * dir_sep) must denote a valid, existing directory, but the last - * component need not exist. - * - * Callers that don't mind links should use the more lightweight - * strbuf_add_absolute_path() instead. - */ -void strbuf_add_real_path(struct strbuf *sb, const char *path); - - -/** * Normalize in-place the path contained in the strbuf. See * normalize_path_copy() for details. If an error occurs, the contents of "sb" * are left untouched, and -1 is returned. @@ -557,10 +513,11 @@ void strbuf_add_real_path(struct strbuf *sb, const char *path); int strbuf_normalize_path(struct strbuf *sb); /** - * Strip whitespace from a buffer. The second parameter controls if - * comments are considered contents to be removed or not. + * Strip whitespace from a buffer. If comment_line_char is non-NUL, + * then lines beginning with that character are considered comments, + * thus removed. */ -void strbuf_stripspace(struct strbuf *buf, int skip_comments); +void strbuf_stripspace(struct strbuf *buf, char comment_line_char); static inline int strbuf_strip_suffix(struct strbuf *sb, const char *suffix) { @@ -630,16 +587,6 @@ void strbuf_add_separated_string_list(struct strbuf *str, */ void strbuf_list_free(struct strbuf **list); -/** - * Add the abbreviation, as generated by repo_find_unique_abbrev(), of `sha1` to - * the strbuf `sb`. - */ -struct repository; -void strbuf_repo_add_unique_abbrev(struct strbuf *sb, struct repository *repo, - const struct object_id *oid, int abbrev_len); -void strbuf_add_unique_abbrev(struct strbuf *sb, const struct object_id *oid, - int abbrev_len); - /* * Remove the filename from the provided path string. If the path * contains a trailing separator, then the path is considered a directory @@ -704,9 +651,6 @@ int strbuf_check_branch_ref(struct strbuf *sb, const char *name); typedef int (*char_predicate)(char ch); -int is_rfc3986_unreserved(char ch); -int is_rfc3986_reserved_or_unreserved(char ch); - void strbuf_addstr_urlencode(struct strbuf *sb, const char *name, char_predicate allow_unencoded_fn); |