diff options
Diffstat (limited to 'strbuf.h')
| -rw-r--r-- | strbuf.h | 45 |
1 files changed, 39 insertions, 6 deletions
@@ -354,8 +354,8 @@ extern void strbuf_addftime(struct strbuf *sb, const char *fmt, const struct tm * * NOTE: The buffer is rewound if the read fails. If -1 is returned, * `errno` must be consulted, like you would do for `read(3)`. - * `strbuf_read()`, `strbuf_read_file()` and `strbuf_getline()` has the - * same behaviour as well. + * `strbuf_read()`, `strbuf_read_file()` and `strbuf_getline_*()` + * family of functions have the same behaviour as well. */ extern size_t strbuf_fread(struct strbuf *, size_t, FILE *); @@ -367,8 +367,18 @@ extern size_t strbuf_fread(struct strbuf *, size_t, FILE *); extern ssize_t strbuf_read(struct strbuf *, int fd, size_t hint); /** + * Read the contents of a given file descriptor partially by using only one + * attempt of xread. The third argument can be used to give a hint about the + * file size, to avoid reallocs. Returns the number of new bytes appended to + * the sb. + */ +extern ssize_t strbuf_read_once(struct strbuf *, int fd, size_t hint); + +/** * Read the contents of a file, specified by its path. The third argument * can be used to give a hint about the file size, to avoid reallocs. + * Return the number of bytes read or a negative value if some error + * occurred while opening or reading the file. */ extern ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint); @@ -379,14 +389,37 @@ extern ssize_t strbuf_read_file(struct strbuf *sb, const char *path, size_t hint extern int strbuf_readlink(struct strbuf *sb, const char *path, size_t hint); /** - * Read a line from a FILE *, overwriting the existing contents - * of the strbuf. The second argument specifies the line - * terminator character, typically `'\n'`. + * Write the whole content of the strbuf to the stream not stopping at + * NUL bytes. + */ +extern ssize_t strbuf_write(struct strbuf *sb, FILE *stream); + +/** + * 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. + * * Reading stops after the terminator or at EOF. The terminator * is removed from the buffer before returning. Returns 0 unless * there was nothing left before EOF, in which case it returns `EOF`. */ -extern int strbuf_getline(struct strbuf *, FILE *, int); +typedef int (*strbuf_getline_fn)(struct strbuf *, FILE *); + +/* Uses LF as the line terminator */ +extern int strbuf_getline_lf(struct strbuf *sb, FILE *fp); + +/* Uses NUL as the line terminator */ +extern int strbuf_getline_nul(struct strbuf *sb, FILE *fp); + +/* + * Similar to strbuf_getline_lf(), but additionally treats a CR that + * comes immediately before the LF as part of the terminator. + * This is the most friendly version to be used to read "text" files + * that can come from platforms whose native text format is CRLF + * terminated. + */ +extern int strbuf_getline(struct strbuf *, FILE *); + /** * Like `strbuf_getline`, but keeps the trailing terminator (if |