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Printf variant with a result allocated inside a pool / linpool

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This commit is contained in:
Maria Matejka
2022-03-15 11:21:46 +01:00
parent 3c42f7af6a
commit c53f547a0b
5 changed files with 69 additions and 22 deletions
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48
lib/printf.c
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@@ -568,3 +568,51 @@ buffer_puts(buffer *buf, const char *str)
buf->pos = (bp < be) ? bp : buf->end;
}
#define POOL_PRINTF_MAXBUF 1024
char *mb_vsprintf(pool *p, const char *fmt, va_list args)
{
char buf[POOL_PRINTF_MAXBUF];
int count = bvsnprintf(buf, POOL_PRINTF_MAXBUF, fmt, args);
if (count < 0)
bug("Attempted to mb_vsprintf() a too long string");
char *out = mb_alloc(p, count + 1);
memcpy(out, buf, count + 1);
return out;
}
char *mb_sprintf(pool *p, const char *fmt, ...)
{
va_list args;
char *out;
va_start(args, fmt);
out = mb_vsprintf(p, fmt, args);
va_end(args);
return out;
}
char *lp_vsprintf(linpool *p, const char *fmt, va_list args)
{
char buf[POOL_PRINTF_MAXBUF];
int count = bvsnprintf(buf, POOL_PRINTF_MAXBUF, fmt, args);
if (count < 0)
bug("Attempted to mb_vsprintf() a too long string");
char *out = lp_alloc(p, count + 1);
memcpy(out, buf, count + 1);
return out;
}
char *lp_sprintf(linpool *p, const char *fmt, ...)
{
va_list args;
char *out;
va_start(args, fmt);
out = lp_vsprintf(p, fmt, args);
va_end(args);
return out;
}