54 lines
1006 B
C
54 lines
1006 B
C
/** \ingroup rpmio
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* \file rpmio/strcasecmp.c
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*/
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#include "system.h"
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#include "rpmio.h"
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#include "debug.h"
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static inline unsigned char xtolower(unsigned char c)
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{
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return ((c >= 'A' && c <= 'Z') ? (c | 0x20) : c);
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}
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int xstrcasecmp(const char *s1, const char *s2)
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{
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const unsigned char *p1 = (const unsigned char *) s1;
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const unsigned char *p2 = (const unsigned char *) s2;
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unsigned char c1, c2;
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if (p1 == p2)
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return 0;
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do
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{
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c1 = xtolower (*p1++);
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c2 = xtolower (*p2++);
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if (c1 == '\0')
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break;
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}
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while (c1 == c2);
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return c1 - c2;
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}
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int xstrncasecmp(const char *s1, const char *s2, size_t n)
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{
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const unsigned char *p1 = (const unsigned char *) s1;
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const unsigned char *p2 = (const unsigned char *) s2;
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unsigned char c1, c2;
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if (p1 == p2 || n == 0)
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return 0;
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do
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{
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c1 = xtolower (*p1++);
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c2 = xtolower (*p2++);
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if (c1 == '\0' || c1 != c2)
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return c1 - c2;
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} while (--n > 0);
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return c1 - c2;
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}
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