53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
#ifndef CSTRING_H
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#define CSTRING_H
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#include <stdarg.h>
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#include "stdpre.h"
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#include <string>
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#include "stdpost.h"
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typedef std::string CString;
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class CStringUtil {
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public:
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// format a string using positional arguments. fmt has literal
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// characters and conversion specifications introduced by `%':
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// %% literal `%'
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// %{n} positional element n, n a positive integer, {} are literal
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// all arguments in the variable list are const char*. positional
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// elements are indexed from 1.
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static CString format(const char* fmt, ...);
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static CString vformat(const char* fmt, va_list);
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// print a string using printf-style formatting
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static CString print(const char* fmt, ...);
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static CString vprint(const char* fmt, va_list);
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// like print but print into a given buffer. if the resulting string
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// will not fit into the buffer then a new buffer is allocated and
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// returned, otherwise the input buffer is returned. the caller must
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// delete[] the returned buffer if is not the passed-in buffer.
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//
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// prefix and suffix must be >= 0. exactly prefix characters and
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// at least suffix characters are available in the buffer before
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// and after the printed string, respectively. bufferLength is the
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// length of buffer and should not be adjusted by the caller to
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// account for prefix or suffix.
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static char* vsprint(char* buffer, int bufferLength,
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int prefix, int suffix, const char* fmt, va_list);
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class CaselessCmp {
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public:
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bool operator()(const CString&, const CString&) const;
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static bool less(const CString&, const CString&);
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static bool equal(const CString&, const CString&);
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static bool cmpLess(const CString::value_type&,
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const CString::value_type&);
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static bool cmpEqual(const CString::value_type&,
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const CString::value_type&);
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};
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};
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#endif
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