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strbuf: add strbuf_addbuf_percentquote 

This is handy for creating strings which will be fed to printf() or
strbuf_expand().

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff King 2010-01-13 12:36:42 -05:00 committed by Junio C Hamano
parent 0a0416a34a
commit 361df5df77
3 changed files with 19 additions and 0 deletions
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7
Documentation/technical/api-strbuf.txt
View File

@ -218,6 +218,13 @@ which can be used by the programmer of the callback as she sees fit.
placeholder and replacement string. The array needs to be
terminated by an entry with placeholder set to NULL.
`strbuf_addbuf_percentquote`::
Append the contents of one strbuf to another, quoting any
percent signs ("%") into double-percents ("%%") in the
destination. This is useful for literal data to be fed to either
strbuf_expand or to the *printf family of functions.
`strbuf_addf`::
Add a formatted string to the buffer.

11
strbuf.c
View File

@ -257,6 +257,17 @@ size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder,
return 0;
}
void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src)
{
int i, len = src->len;
for (i = 0; i < len; i++) {
if (src->buf[i] == '%')
strbuf_addch(dst, '%');
strbuf_addch(dst, src->buf[i]);
}
}
size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
{
size_t res;

1
strbuf.h
View File

@ -116,6 +116,7 @@ struct strbuf_expand_dict_entry {
const char *value;
};
extern size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, void *context);
extern void strbuf_addbuf_percentquote(struct strbuf *dst, const struct strbuf *src);
__attribute__((format (printf,2,3)))
extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...);