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84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
// $Id: OS_NS_strings.cpp 91286 2010-08-05 09:04:31Z johnnyw $
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#include "ace/OS_NS_strings.h"
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#if !defined (ACE_HAS_INLINED_OSCALLS)
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# include "ace/OS_NS_strings.inl"
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#endif /* ACE_HAS_INLINED_OSCALLS */
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#if defined (ACE_LACKS_STRCASECMP)
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# include "ace/OS_NS_ctype.h"
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#endif /* ACE_LACKS_STRCASECMP */
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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#if defined (ACE_LACKS_STRCASECMP)
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int
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ACE_OS::strcasecmp_emulation (const char *s, const char *t)
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{
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const char *scan1 = s;
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const char *scan2 = t;
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while (*scan1 != 0
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&& ACE_OS::ace_tolower (*scan1)
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== ACE_OS::ace_tolower (*scan2))
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{
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++scan1;
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++scan2;
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}
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// The following case analysis is necessary so that characters which
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// look negative collate low against normal characters but high
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// against the end-of-string NUL.
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if (*scan1 == '\0' && *scan2 == '\0')
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return 0;
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else if (*scan1 == '\0')
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return -1;
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else if (*scan2 == '\0')
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return 1;
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else
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return ACE_OS::ace_tolower (*scan1) - ACE_OS::ace_tolower (*scan2);
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}
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#endif /* ACE_LACKS_STRCASECMP */
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#if defined (ACE_LACKS_STRCASECMP)
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int
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ACE_OS::strncasecmp_emulation (const char *s,
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const char *t,
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size_t len)
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{
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const char *scan1 = s;
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const char *scan2 = t;
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size_t count = 0;
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while (count++ < len
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&& *scan1 != 0
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&& ACE_OS::ace_tolower (*scan1)
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== ACE_OS::ace_tolower (*scan2))
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{
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++scan1;
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++scan2;
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}
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if (count > len)
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return 0;
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// The following case analysis is necessary so that characters which
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// look negative collate low against normal characters but high
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// against the end-of-string NUL.
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if (*scan1 == '\0' && *scan2 == '\0')
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return 0;
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else if (*scan1 == '\0')
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return -1;
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else if (*scan2 == '\0')
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return 1;
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else
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return ACE_OS::ace_tolower (*scan1) - ACE_OS::ace_tolower (*scan2);
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}
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#endif /* ACE_LACKS_STRCASECMP */
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ACE_END_VERSIONED_NAMESPACE_DECL
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