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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /intl/icu/source/common/uinvchar.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | intl/icu/source/common/uinvchar.cpp | 627 |
1 files changed, 627 insertions, 0 deletions
diff --git a/intl/icu/source/common/uinvchar.cpp b/intl/icu/source/common/uinvchar.cpp new file mode 100644 index 0000000000..096a8e28d1 --- /dev/null +++ b/intl/icu/source/common/uinvchar.cpp @@ -0,0 +1,627 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +******************************************************************************* +* +* Copyright (C) 1999-2010, International Business Machines +* Corporation and others. All Rights Reserved. +* +******************************************************************************* +* file name: uinvchar.c +* encoding: UTF-8 +* tab size: 8 (not used) +* indentation:2 +* +* created on: 2004sep14 +* created by: Markus W. Scherer +* +* Functions for handling invariant characters, moved here from putil.c +* for better modularization. +*/ + +#include "unicode/utypes.h" +#include "unicode/ustring.h" +#include "udataswp.h" +#include "cstring.h" +#include "cmemory.h" +#include "uassert.h" +#include "uinvchar.h" + +/* invariant-character handling --------------------------------------------- */ + +/* + * These maps for ASCII to/from EBCDIC map invariant characters (see utypes.h) + * appropriately for most EBCDIC codepages. + * + * They currently also map most other ASCII graphic characters, + * appropriately for codepages 37 and 1047. + * Exceptions: The characters for []^ have different codes in 37 & 1047. + * Both versions are mapped to ASCII. + * + * ASCII 37 1047 + * [ 5B BA AD + * ] 5D BB BD + * ^ 5E B0 5F + * + * There are no mappings for variant characters from Unicode to EBCDIC. + * + * Currently, C0 control codes are also included in these maps. + * Exceptions: S/390 Open Edition swaps LF and NEL codes compared with other + * EBCDIC platforms; both codes (15 and 25) are mapped to ASCII LF (0A), + * but there is no mapping for ASCII LF back to EBCDIC. + * + * ASCII EBCDIC S/390-OE + * LF 0A 25 15 + * NEL 85 15 25 + * + * The maps below explicitly exclude the variant + * control and graphical characters that are in ASCII-based + * codepages at 0x80 and above. + * "No mapping" is expressed by mapping to a 00 byte. + * + * These tables do not establish a converter or a codepage. + */ + +static const uint8_t asciiFromEbcdic[256]={ + 0x00, 0x01, 0x02, 0x03, 0x00, 0x09, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x00, 0x0a, 0x08, 0x00, 0x18, 0x19, 0x00, 0x00, 0x1c, 0x1d, 0x1e, 0x1f, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x17, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x06, 0x07, + 0x00, 0x00, 0x16, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x14, 0x15, 0x00, 0x1a, + + 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2e, 0x3c, 0x28, 0x2b, 0x7c, + 0x26, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x24, 0x2a, 0x29, 0x3b, 0x5e, + 0x2d, 0x2f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2c, 0x25, 0x5f, 0x3e, 0x3f, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x3a, 0x23, 0x40, 0x27, 0x3d, 0x22, + + 0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x7e, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x00, 0x00, 0x00, 0x5b, 0x00, 0x00, + 0x5e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5b, 0x5d, 0x00, 0x5d, 0x00, 0x00, + + 0x7b, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x7d, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x5c, 0x00, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +static const uint8_t ebcdicFromAscii[256]={ + 0x00, 0x01, 0x02, 0x03, 0x37, 0x2d, 0x2e, 0x2f, 0x16, 0x05, 0x00, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x3c, 0x3d, 0x32, 0x26, 0x18, 0x19, 0x3f, 0x27, 0x1c, 0x1d, 0x1e, 0x1f, + 0x40, 0x00, 0x7f, 0x00, 0x00, 0x6c, 0x50, 0x7d, 0x4d, 0x5d, 0x5c, 0x4e, 0x6b, 0x60, 0x4b, 0x61, + 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0x7a, 0x5e, 0x4c, 0x7e, 0x6e, 0x6f, + + 0x00, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, + 0xd7, 0xd8, 0xd9, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0x00, 0x00, 0x00, 0x00, 0x6d, + 0x00, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, + 0x97, 0x98, 0x99, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0x00, 0x00, 0x00, 0x00, 0x07, + + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 +}; + +/* Same as asciiFromEbcdic[] except maps all letters to lowercase. */ +static const uint8_t lowercaseAsciiFromEbcdic[256]={ + 0x00, 0x01, 0x02, 0x03, 0x00, 0x09, 0x00, 0x7f, 0x00, 0x00, 0x00, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x00, 0x0a, 0x08, 0x00, 0x18, 0x19, 0x00, 0x00, 0x1c, 0x1d, 0x1e, 0x1f, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a, 0x17, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x06, 0x07, + 0x00, 0x00, 0x16, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x14, 0x15, 0x00, 0x1a, + + 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2e, 0x3c, 0x28, 0x2b, 0x7c, + 0x26, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x24, 0x2a, 0x29, 0x3b, 0x5e, + 0x2d, 0x2f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x2c, 0x25, 0x5f, 0x3e, 0x3f, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0x3a, 0x23, 0x40, 0x27, 0x3d, 0x22, + + 0x00, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x7e, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x00, 0x00, 0x00, 0x5b, 0x00, 0x00, + 0x5e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5b, 0x5d, 0x00, 0x5d, 0x00, 0x00, + + 0x7b, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x7d, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x7c, 0x00, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; + +/* + * Bit sets indicating which characters of the ASCII repertoire + * (by ASCII/Unicode code) are "invariant". + * See utypes.h for more details. + * + * As invariant are considered the characters of the ASCII repertoire except + * for the following: + * 21 '!' <exclamation mark> + * 23 '#' <number sign> + * 24 '$' <dollar sign> + * + * 40 '@' <commercial at> + * + * 5b '[' <left bracket> + * 5c '\' <backslash> + * 5d ']' <right bracket> + * 5e '^' <circumflex> + * + * 60 '`' <grave accent> + * + * 7b '{' <left brace> + * 7c '|' <vertical line> + * 7d '}' <right brace> + * 7e '~' <tilde> + */ +static const uint32_t invariantChars[4]={ + 0xfffffbff, /* 00..1f but not 0a */ + 0xffffffe5, /* 20..3f but not 21 23 24 */ + 0x87fffffe, /* 40..5f but not 40 5b..5e */ + 0x87fffffe /* 60..7f but not 60 7b..7e */ +}; + +/* + * test unsigned types (or values known to be non-negative) for invariant characters, + * tests ASCII-family character values + */ +#define UCHAR_IS_INVARIANT(c) (((c)<=0x7f) && (invariantChars[(c)>>5]&((uint32_t)1<<((c)&0x1f)))!=0) + +/* test signed types for invariant characters, adds test for positive values */ +#define SCHAR_IS_INVARIANT(c) ((0<=(c)) && UCHAR_IS_INVARIANT(c)) + +#if U_CHARSET_FAMILY==U_ASCII_FAMILY +#define CHAR_TO_UCHAR(c) c +#define UCHAR_TO_CHAR(c) c +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY +#define CHAR_TO_UCHAR(u) asciiFromEbcdic[u] +#define UCHAR_TO_CHAR(u) ebcdicFromAscii[u] +#else +# error U_CHARSET_FAMILY is not valid +#endif + + +U_CAPI void U_EXPORT2 +u_charsToUChars(const char *cs, char16_t *us, int32_t length) { + char16_t u; + uint8_t c; + + /* + * Allow the entire ASCII repertoire to be mapped _to_ Unicode. + * For EBCDIC systems, this works for characters with codes from + * codepages 37 and 1047 or compatible. + */ + while(length>0) { + c=(uint8_t)(*cs++); + u=(char16_t)CHAR_TO_UCHAR(c); + U_ASSERT((u!=0 || c==0)); /* only invariant chars converted? */ + *us++=u; + --length; + } +} + +U_CAPI void U_EXPORT2 +u_UCharsToChars(const char16_t *us, char *cs, int32_t length) { + char16_t u; + + while(length>0) { + u=*us++; + if(!UCHAR_IS_INVARIANT(u)) { + U_ASSERT(false); /* Variant characters were used. These are not portable in ICU. */ + u=0; + } + *cs++=(char)UCHAR_TO_CHAR(u); + --length; + } +} + +U_CAPI UBool U_EXPORT2 +uprv_isInvariantString(const char *s, int32_t length) { + uint8_t c; + + for(;;) { + if(length<0) { + /* NUL-terminated */ + c=(uint8_t)*s++; + if(c==0) { + break; + } + } else { + /* count length */ + if(length==0) { + break; + } + --length; + c=(uint8_t)*s++; + if(c==0) { + continue; /* NUL is invariant */ + } + } + /* c!=0 now, one branch below checks c==0 for variant characters */ + + /* + * no assertions here because these functions are legitimately called + * for strings with variant characters + */ +#if U_CHARSET_FAMILY==U_ASCII_FAMILY + if(!UCHAR_IS_INVARIANT(c)) { + return false; /* found a variant char */ + } +#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY + c=CHAR_TO_UCHAR(c); + if(c==0 || !UCHAR_IS_INVARIANT(c)) { + return false; /* found a variant char */ + } +#else +# error U_CHARSET_FAMILY is not valid +#endif + } + return true; +} + +U_CAPI UBool U_EXPORT2 +uprv_isInvariantUString(const char16_t *s, int32_t length) { + char16_t c; + + for(;;) { + if(length<0) { + /* NUL-terminated */ + c=*s++; + if(c==0) { + break; + } + } else { + /* count length */ + if(length==0) { + break; + } + --length; + c=*s++; + } + + /* + * no assertions here because these functions are legitimately called + * for strings with variant characters + */ + if(!UCHAR_IS_INVARIANT(c)) { + return false; /* found a variant char */ + } + } + return true; +} + +/* UDataSwapFn implementations used in udataswp.c ------- */ + +/* convert ASCII to EBCDIC and verify that all characters are invariant */ +U_CAPI int32_t U_EXPORT2 +uprv_ebcdicFromAscii(const UDataSwapper *ds, + const void *inData, int32_t length, void *outData, + UErrorCode *pErrorCode) { + const uint8_t *s; + uint8_t *t; + uint8_t c; + + int32_t count; + + if(pErrorCode==nullptr || U_FAILURE(*pErrorCode)) { + return 0; + } + if(ds==nullptr || inData==nullptr || length<0 || (length>0 && outData==nullptr)) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + /* setup and swapping */ + s=(const uint8_t *)inData; + t=(uint8_t *)outData; + count=length; + while(count>0) { + c=*s++; + if(!UCHAR_IS_INVARIANT(c)) { + udata_printError(ds, "uprv_ebcdicFromAscii() string[%d] contains a variant character in position %d\n", + length, length-count); + *pErrorCode=U_INVALID_CHAR_FOUND; + return 0; + } + *t++=ebcdicFromAscii[c]; + --count; + } + + return length; +} + +/* this function only checks and copies ASCII strings without conversion */ +U_CFUNC int32_t +uprv_copyAscii(const UDataSwapper *ds, + const void *inData, int32_t length, void *outData, + UErrorCode *pErrorCode) { + const uint8_t *s; + uint8_t c; + + int32_t count; + + if(pErrorCode==nullptr || U_FAILURE(*pErrorCode)) { + return 0; + } + if(ds==nullptr || inData==nullptr || length<0 || (length>0 && outData==nullptr)) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + /* setup and checking */ + s=(const uint8_t *)inData; + count=length; + while(count>0) { + c=*s++; + if(!UCHAR_IS_INVARIANT(c)) { + udata_printError(ds, "uprv_copyFromAscii() string[%d] contains a variant character in position %d\n", + length, length-count); + *pErrorCode=U_INVALID_CHAR_FOUND; + return 0; + } + --count; + } + + if(length>0 && inData!=outData) { + uprv_memcpy(outData, inData, length); + } + + return length; +} + +/* convert EBCDIC to ASCII and verify that all characters are invariant */ +U_CFUNC int32_t +uprv_asciiFromEbcdic(const UDataSwapper *ds, + const void *inData, int32_t length, void *outData, + UErrorCode *pErrorCode) { + const uint8_t *s; + uint8_t *t; + uint8_t c; + + int32_t count; + + if(pErrorCode==nullptr || U_FAILURE(*pErrorCode)) { + return 0; + } + if(ds==nullptr || inData==nullptr || length<0 || (length>0 && outData==nullptr)) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + /* setup and swapping */ + s=(const uint8_t *)inData; + t=(uint8_t *)outData; + count=length; + while(count>0) { + c=*s++; + if(c!=0 && ((c=asciiFromEbcdic[c])==0 || !UCHAR_IS_INVARIANT(c))) { + udata_printError(ds, "uprv_asciiFromEbcdic() string[%d] contains a variant character in position %d\n", + length, length-count); + *pErrorCode=U_INVALID_CHAR_FOUND; + return 0; + } + *t++=c; + --count; + } + + return length; +} + +/* this function only checks and copies EBCDIC strings without conversion */ +U_CFUNC int32_t +uprv_copyEbcdic(const UDataSwapper *ds, + const void *inData, int32_t length, void *outData, + UErrorCode *pErrorCode) { + const uint8_t *s; + uint8_t c; + + int32_t count; + + if(pErrorCode==nullptr || U_FAILURE(*pErrorCode)) { + return 0; + } + if(ds==nullptr || inData==nullptr || length<0 || (length>0 && outData==nullptr)) { + *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; + return 0; + } + + /* setup and checking */ + s=(const uint8_t *)inData; + count=length; + while(count>0) { + c=*s++; + if(c!=0 && ((c=asciiFromEbcdic[c])==0 || !UCHAR_IS_INVARIANT(c))) { + udata_printError(ds, "uprv_copyEbcdic() string[%] contains a variant character in position %d\n", + length, length-count); + *pErrorCode=U_INVALID_CHAR_FOUND; + return 0; + } + --count; + } + + if(length>0 && inData!=outData) { + uprv_memcpy(outData, inData, length); + } + + return length; +} + +U_CFUNC UBool +uprv_isEbcdicAtSign(char c) { + static const uint8_t ebcdicAtSigns[] = { + 0x7C, 0x44, 0x66, 0x80, 0xAC, 0xAE, 0xAF, 0xB5, 0xEC, 0xEF, 0x00 }; + return c != 0 && uprv_strchr((const char *)ebcdicAtSigns, c) != nullptr; +} + +/* compare invariant strings; variant characters compare less than others and unlike each other */ +U_CFUNC int32_t +uprv_compareInvAscii(const UDataSwapper *ds, + const char *outString, int32_t outLength, + const char16_t *localString, int32_t localLength) { + (void)ds; + int32_t minLength; + UChar32 c1, c2; + uint8_t c; + + if(outString==nullptr || outLength<-1 || localString==nullptr || localLength<-1) { + return 0; + } + + if(outLength<0) { + outLength=(int32_t)uprv_strlen(outString); + } + if(localLength<0) { + localLength=u_strlen(localString); + } + + minLength= outLength<localLength ? outLength : localLength; + + while(minLength>0) { + c=(uint8_t)*outString++; + if(UCHAR_IS_INVARIANT(c)) { + c1=c; + } else { + c1=-1; + } + + c2=*localString++; + if(!UCHAR_IS_INVARIANT(c2)) { + c2=-2; + } + + if((c1-=c2)!=0) { + return c1; + } + + --minLength; + } + + /* strings start with same prefix, compare lengths */ + return outLength-localLength; +} + +U_CFUNC int32_t +uprv_compareInvEbcdic(const UDataSwapper *ds, + const char *outString, int32_t outLength, + const char16_t *localString, int32_t localLength) { + (void)ds; + int32_t minLength; + UChar32 c1, c2; + uint8_t c; + + if(outString==nullptr || outLength<-1 || localString==nullptr || localLength<-1) { + return 0; + } + + if(outLength<0) { + outLength=(int32_t)uprv_strlen(outString); + } + if(localLength<0) { + localLength=u_strlen(localString); + } + + minLength= outLength<localLength ? outLength : localLength; + + while(minLength>0) { + c=(uint8_t)*outString++; + if(c==0) { + c1=0; + } else if((c1=asciiFromEbcdic[c])!=0 && UCHAR_IS_INVARIANT(c1)) { + /* c1 is set */ + } else { + c1=-1; + } + + c2=*localString++; + if(!UCHAR_IS_INVARIANT(c2)) { + c2=-2; + } + + if((c1-=c2)!=0) { + return c1; + } + + --minLength; + } + + /* strings start with same prefix, compare lengths */ + return outLength-localLength; +} + +U_CAPI int32_t U_EXPORT2 +uprv_compareInvEbcdicAsAscii(const char *s1, const char *s2) { + int32_t c1, c2; + + for(;; ++s1, ++s2) { + c1=(uint8_t)*s1; + c2=(uint8_t)*s2; + if(c1!=c2) { + if(c1!=0 && ((c1=asciiFromEbcdic[c1])==0 || !UCHAR_IS_INVARIANT(c1))) { + c1=-(int32_t)(uint8_t)*s1; + } + if(c2!=0 && ((c2=asciiFromEbcdic[c2])==0 || !UCHAR_IS_INVARIANT(c2))) { + c2=-(int32_t)(uint8_t)*s2; + } + return c1-c2; + } else if(c1==0) { + return 0; + } + } +} + +U_CAPI char U_EXPORT2 +uprv_ebcdicToAscii(char c) { + return (char)asciiFromEbcdic[(uint8_t)c]; +} + +U_CAPI char U_EXPORT2 +uprv_ebcdicToLowercaseAscii(char c) { + return (char)lowercaseAsciiFromEbcdic[(uint8_t)c]; +} + +U_CAPI uint8_t* U_EXPORT2 +uprv_aestrncpy(uint8_t *dst, const uint8_t *src, int32_t n) +{ + uint8_t *orig_dst = dst; + + if(n==-1) { + n = static_cast<int32_t>(uprv_strlen((const char*)src)+1); /* copy NUL */ + } + /* copy non-null */ + while(*src && n>0) { + *(dst++) = asciiFromEbcdic[*(src++)]; + n--; + } + /* pad */ + while(n>0) { + *(dst++) = 0; + n--; + } + return orig_dst; +} + +U_CAPI uint8_t* U_EXPORT2 +uprv_eastrncpy(uint8_t *dst, const uint8_t *src, int32_t n) +{ + uint8_t *orig_dst = dst; + + if(n==-1) { + n = static_cast<int32_t>(uprv_strlen((const char*)src)+1); /* copy NUL */ + } + /* copy non-null */ + while(*src && n>0) { + char ch = ebcdicFromAscii[*(src++)]; + if(ch == 0) { + ch = ebcdicFromAscii[0x3f]; /* questionmark (subchar) */ + } + *(dst++) = ch; + n--; + } + /* pad */ + while(n>0) { + *(dst++) = 0; + n--; + } + return orig_dst; +} + |