diff options
Diffstat (limited to 'libc-top-half/musl/src/stdio/vsscanf.c')
-rw-r--r-- | libc-top-half/musl/src/stdio/vsscanf.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/stdio/vsscanf.c b/libc-top-half/musl/src/stdio/vsscanf.c new file mode 100644 index 0000000..0e5b482 --- /dev/null +++ b/libc-top-half/musl/src/stdio/vsscanf.c @@ -0,0 +1,31 @@ +#include "stdio_impl.h" +#include <string.h> + +static size_t string_read(FILE *f, unsigned char *buf, size_t 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, +#if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT) + .read = string_read, .lock = -1 +#else + .read = string_read +#endif + }; + return vfscanf(&f, fmt, ap); +} + +weak_alias(vsscanf,__isoc99_vsscanf); |