diff options
Diffstat (limited to 'src/stdio/vsscanf.c')
| -rw-r--r-- | src/stdio/vsscanf.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/stdio/vsscanf.c b/src/stdio/vsscanf.c index 98500225..4d6d259b 100644 --- a/src/stdio/vsscanf.c +++ b/src/stdio/vsscanf.c @@ -1,15 +1,25 @@ #include "stdio_impl.h" +#include <string.h> -static size_t do_read(FILE *f, unsigned char *buf, size_t len) +static size_t string_read(FILE *f, unsigned char *buf, size_t len) { - return __string_read(f, buf, len); + char *src = f->cookie; + size_t k = len+256; + char *end = memchr(src, 0, k); + if (end) k = end-src; + if (k < len) len = k; + memcpy(buf, src, len); + f->rpos = (void *)(src+len); + f->rend = (void *)(src+k); + f->cookie = src+k; + return len; } int vsscanf(const char *restrict s, const char *restrict fmt, va_list ap) { FILE f = { .buf = (void *)s, .cookie = (void *)s, - .read = do_read, .lock = -1 + .read = string_read, .lock = -1 }; return vfscanf(&f, fmt, ap); } |