28 lines
593 B
C
28 lines
593 B
C
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#include "stdio_impl.h"
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#include <string.h>
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static size_t string_read(FILE *f, unsigned char *buf, size_t len)
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{
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char *src = f->cookie;
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size_t k = len+256;
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char *end = memchr(src, 0, k);
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if (end) k = end-src;
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if (k < len) len = k;
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memcpy(buf, src, len);
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f->rpos = (void *)(src+len);
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f->rend = (void *)(src+k);
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f->cookie = src+k;
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return len;
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}
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int vsscanf(const char *restrict s, const char *restrict fmt, va_list ap)
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{
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FILE f = {
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.buf = (void *)s, .cookie = (void *)s,
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.read = string_read, .lock = -1
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};
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return vfscanf(&f, fmt, ap);
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}
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weak_alias(vsscanf,__isoc99_vsscanf);
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