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14 lines
375 B
C
14 lines
375 B
C
#include <rangecheck.h>
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#include <inttypes.h>
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/* does an UTF-32 string starting at "ptr" lie in buf[0..len-1]? */
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int range_str4inbuf(const void* buf,size_t len,const void* stringstart) {
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const uint32_t* x;
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const uint32_t* y;
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if (!range_ptrinbuf(buf,len,x=stringstart)) return 0;
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y=(const uint32_t*)((char*)x+len);
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for (; x+1<=y && *x; ++x);
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return (x+1<=y);
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}
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