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strbuf: convenience format functions with \n automatically appended 

These functions are helpful when we do not want to expose \n to
translators. For example

    printf("hello world\n");

can be converted to

    printf_ln(_("hello world"));

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy 2012-04-23 19:30:22 +07:00 committed by Junio C Hamano
parent 1b8b2e4dc8
commit 9a0a30aa4b
2 changed files with 40 additions and 0 deletions
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33
strbuf.c
View File

@ -464,3 +464,36 @@ void strbuf_addstr_urlencode(struct strbuf *sb, const char *s,
{
strbuf_add_urlencode(sb, s, strlen(s), reserved);
}
void strbuf_addf_ln(struct strbuf *sb, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
strbuf_vaddf(sb, fmt, ap);
va_end(ap);
strbuf_addch(sb, '\n');
}
int printf_ln(const char *fmt, ...)
{
int ret;
va_list ap;
va_start(ap, fmt);
ret = vprintf(fmt, ap);
va_end(ap);
if (ret < 0 || putchar('\n') == EOF)
return -1;
return ret + 1;
}
int fprintf_ln(FILE *fp, const char *fmt, ...)
{
int ret;
va_list ap;
va_start(ap, fmt);
ret = vfprintf(fp, fmt, ap);
va_end(ap);
if (ret < 0 || putc('\n', fp) == EOF)
return -1;
return ret + 1;
}

7
strbuf.h
View File

@ -99,6 +99,8 @@ __attribute__((format (printf,2,3)))
extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...);
__attribute__((format (printf,2,0)))
extern void strbuf_vaddf(struct strbuf *sb, const char *fmt, va_list ap);
__attribute__((format (printf,2,3)))
extern void strbuf_addf_ln(struct strbuf *sb, const char *fmt, ...);
extern void strbuf_add_lines(struct strbuf *sb, const char *prefix, const char *buf, size_t size);
@ -129,4 +131,9 @@ extern void strbuf_add_urlencode(struct strbuf *, const char *, size_t,
extern void strbuf_addstr_urlencode(struct strbuf *, const char *,
int reserved);
__attribute__((format (printf,1,2)))
extern int printf_ln(const char *fmt, ...);
__attribute__((format (printf,2,3)))
extern int fprintf_ln(FILE *fp, const char *fmt, ...);
#endif /* STRBUF_H */