204 lines
6.5 KiB
C
204 lines
6.5 KiB
C
/*
|
|
**********************************************************************
|
|
* Copyright (C) 1998-1999, International Business Machines
|
|
* Corporation and others. All Rights Reserved.
|
|
**********************************************************************
|
|
*
|
|
* File ustring.h
|
|
*
|
|
* Modification History:
|
|
*
|
|
* Date Name Description
|
|
* 12/07/98 bertrand Creation.
|
|
*******************************************************************************
|
|
*/
|
|
|
|
#ifndef USTRING_H
|
|
#define USTRING_H
|
|
#include "unicode/utypes.h"
|
|
|
|
/**
|
|
* Determine the length of an array of UChar.
|
|
*
|
|
* @param s The array of UChars, NULL (U+0000) terminated.
|
|
* @return The number of UChars in <TT>chars</TT>, minus the terminator.
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
u_strlen(const UChar *s);
|
|
|
|
/**
|
|
* Concatenate two ustrings. Appends a copy of <TT>src</TT>,
|
|
* including the null terminator, to <TT>dst</TT>. The initial copied
|
|
* character from <TT>src</TT> overwrites the null terminator in <TT>dst</TT>.
|
|
* @param dst The destination string.
|
|
* @param src The source string.
|
|
* @return A pointer to <TT>dst</TT>.
|
|
*/
|
|
|
|
U_CAPI UChar* U_EXPORT2
|
|
u_strcat(UChar *dst,
|
|
const UChar *src);
|
|
|
|
/**
|
|
* Concatenate two ustrings.
|
|
* Appends at most <TT>n</TT> characters from <TT>src</TT> to <TT>dst</TT>.
|
|
* Adds a null terminator.
|
|
* @param dst The destination string.
|
|
* @param src The source string.
|
|
* @param n The maximum number of characters to compare.
|
|
* @return A pointer to <TT>dst</TT>.
|
|
*/
|
|
U_CAPI UChar* U_EXPORT2
|
|
u_strncat(UChar *dst,
|
|
const UChar *src,
|
|
int32_t n);
|
|
|
|
/**
|
|
* Find the first occurrence of a specified character in a ustring.
|
|
*
|
|
* @param s The string to search.
|
|
* @param c The character to find.
|
|
* @return A pointer to the first occurrence of <TT>c</TT> in <TT>s</TT>,
|
|
* or a null pointer if <TT>s</TT> does not contain <TT>c</TT>.
|
|
*/
|
|
U_CAPI UChar* U_EXPORT2
|
|
u_strchr(const UChar *s,
|
|
UChar c);
|
|
|
|
/**
|
|
* Compare two ustrings for bitwise equality.
|
|
*
|
|
* @param s1 A string to compare.
|
|
* @param s2 A string to compare.
|
|
* @return 0 if <TT>s1</TT> and <TT>s2</TT> are bitwise equal; a negative
|
|
* value if <TT>s1</TT> is bitwise less than <TT>s2,/TT>; a positive
|
|
* value if <TT>s1</TT> is bitwise greater than <TT>s2,/TT>.
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
u_strcmp(const UChar *s1,
|
|
const UChar *s2);
|
|
|
|
/**
|
|
* Compare two ustrings for bitwise equality.
|
|
* Compares at most <TT>n</TT> characters.
|
|
* @param s1 A string to compare.
|
|
* @param s2 A string to compare.
|
|
* @param n The maximum number of characters to compare.
|
|
* @return 0 if <TT>s1</TT> and <TT>s2</TT> are bitwise equal; a negative
|
|
* value if <TT>s1</TT> is bitwise less than <TT>s2,/TT>; a positive
|
|
* value if <TT>s1</TT> is bitwise greater than <TT>s2,/TT>.
|
|
*/
|
|
U_CAPI int32_t U_EXPORT2
|
|
u_strncmp(const UChar *ucs1,
|
|
const UChar *ucs2,
|
|
int32_t n);
|
|
|
|
/**
|
|
* Copy a ustring.
|
|
* Adds a null terminator.
|
|
* @param dst The destination string.
|
|
* @param src The source string.
|
|
* @return A pointer to <TT>dst</TT>.
|
|
*/
|
|
U_CAPI UChar* U_EXPORT2
|
|
u_strcpy(UChar *dst,
|
|
const UChar *src);
|
|
|
|
/**
|
|
* Copy a ustring.
|
|
* Copies at most <TT>n</TT> characters. The result will be null terminated
|
|
* if the length of <TT>src</TT> is less than <TT>n</TT>.
|
|
* @param dst The destination string.
|
|
* @param src The source string.
|
|
* @param n The maximum number of characters to copy.
|
|
* @return A pointer to <TT>dst</TT>.
|
|
*/
|
|
U_CAPI UChar* U_EXPORT2
|
|
u_strncpy(UChar *dst,
|
|
const UChar *src,
|
|
int32_t n);
|
|
|
|
/**
|
|
* Copy a byte string encoded in the default codepage to a ustring.
|
|
* Adds a null terminator.
|
|
* performs a host byte to UChar conversion
|
|
* @param dst The destination string.
|
|
* @param src The source string.
|
|
* @return A pointer to <TT>dst</TT>.
|
|
*/
|
|
U_CAPI UChar* U_EXPORT2 u_uastrcpy(UChar *ucs1,
|
|
const char *s2 );
|
|
|
|
/**
|
|
* Copy a byte string encoded in the default codepage to a ustring.
|
|
* Copies at most <TT>n</TT> characters. The result will be null terminated
|
|
* if the length of <TT>src</TT> is less than <TT>n</TT>.
|
|
* performs a host byte to UChar conversion
|
|
* @param dst The destination string.
|
|
* @param src The source string.
|
|
* @param n The maximum number of characters to copy.
|
|
* @return A pointer to <TT>dst</TT>.
|
|
*/
|
|
U_CAPI UChar* U_EXPORT2 u_uastrncpy(UChar *ucs1,
|
|
const char *s2,
|
|
int32_t n);
|
|
|
|
/**
|
|
* Copy ustring to a byte string encoded in the default codepage.
|
|
* Adds a null terminator.
|
|
* performs a UChar to host byte conversion
|
|
* @param dst The destination string.
|
|
* @param src The source string.
|
|
* @return A pointer to <TT>dst</TT>.
|
|
*/
|
|
U_CAPI char* U_EXPORT2 u_austrcpy(char *s1,
|
|
const UChar *us2 );
|
|
|
|
/**
|
|
* Unicode String literals in C.
|
|
* We need one macro to declare a variable for the string
|
|
* and to statically preinitialize it if possible,
|
|
* and a second macro to dynamically intialize such a string variable if necessary.
|
|
*
|
|
* The macros are defined for maximum performance.
|
|
* They work only for strings that contain "invariant characters", i.e.,
|
|
* only latin letters, digits, and some punctuation.
|
|
* See utypes.h for details.
|
|
*
|
|
* A pair of macros for a single string must be used with the same
|
|
* parameters.
|
|
* The string parameter must be a C string literal.
|
|
* The length of the string, not including the terminating
|
|
* <code>NUL</code>, must be specified as a constant.
|
|
* The U_STRING_DECL macro should be invoked exactly once for one
|
|
* such string variable before it is used.
|
|
*
|
|
* Usage:
|
|
* <pre>
|
|
*   U_STRING_DECL(ustringVar1, "Quick-Fox 2", 11);
|
|
*   U_STRING_DECL(ustringVar2, "jumps 5%", 8);
|
|
*   static bool_t didInit=FALSE;
|
|
*  
|
|
*   int32_t function() {
|
|
*   if(!didInit) {
|
|
*   U_STRING_INIT(ustringVar1, "Quick-Fox 2", 11);
|
|
*   U_STRING_INIT(ustringVar2, "jumps 5%", 8);
|
|
*   didInit=TRUE;
|
|
*   }
|
|
*   return u_strcmp(ustringVar1, ustringVar2);
|
|
*   }
|
|
* </pre>
|
|
*/
|
|
#if U_SIZEOF_WCHAR_T==U_SIZEOF_UCHAR && U_CHARSET_FAMILY==U_ASCII_FAMILY
|
|
# define U_STRING_DECL(var, cs, length) static const wchar_t var[(length)+1]={ L ## cs }
|
|
# define U_STRING_INIT(var, cs, length)
|
|
#elif U_SIZEOF_UCHAR==1 && U_CHARSET_FAMILY==U_ASCII_FAMILY
|
|
# define U_STRING_DECL(var, cs, length) static const UChar var[(length)+1]={ (const UChar *)cs }
|
|
# define U_STRING_INIT(var, cs, length)
|
|
#else
|
|
# define U_STRING_DECL(var, cs, length) static UChar var[(length)+1]
|
|
# define U_STRING_INIT(var, cs, length) u_charsToUChars(cs, var, length+1)
|
|
#endif
|
|
|
|
#endif
|