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Diffstat (limited to 'deps/icu-small/source/io/uscanf_p.cpp')
| -rw-r--r-- | deps/icu-small/source/io/uscanf_p.cpp | 1450 |
1 files changed, 0 insertions, 1450 deletions
diff --git a/deps/icu-small/source/io/uscanf_p.cpp b/deps/icu-small/source/io/uscanf_p.cpp deleted file mode 100644 index c08949d729..0000000000 --- a/deps/icu-small/source/io/uscanf_p.cpp +++ /dev/null @@ -1,1450 +0,0 @@ -// © 2016 and later: Unicode, Inc. and others. -// License & terms of use: http://www.unicode.org/copyright.html -/* -******************************************************************************* -* -* Copyright (C) 1998-2016, International Business Machines -* Corporation and others. All Rights Reserved. -* -******************************************************************************* -* -* File uscnnf_p.c -* -* Modification History: -* -* Date Name Description -* 12/02/98 stephen Creation. -* 03/13/99 stephen Modified for new C API. -******************************************************************************* -*/ - -#include "unicode/utypes.h" - -#if !UCONFIG_NO_FORMATTING && !UCONFIG_NO_CONVERSION - -#include "unicode/uchar.h" -#include "unicode/ustring.h" -#include "unicode/unum.h" -#include "unicode/udat.h" -#include "unicode/uset.h" -#include "uscanf.h" -#include "ufmt_cmn.h" -#include "ufile.h" -#include "locbund.h" - -#include "cmemory.h" -#include "ustr_cnv.h" - -/* flag characters for u_scanf */ -#define FLAG_ASTERISK 0x002A -#define FLAG_PAREN 0x0028 - -#define ISFLAG(s) (s) == FLAG_ASTERISK || \ - (s) == FLAG_PAREN - -/* special characters for u_scanf */ -#define SPEC_DOLLARSIGN 0x0024 - -/* unicode digits */ -#define DIGIT_ZERO 0x0030 -#define DIGIT_ONE 0x0031 -#define DIGIT_TWO 0x0032 -#define DIGIT_THREE 0x0033 -#define DIGIT_FOUR 0x0034 -#define DIGIT_FIVE 0x0035 -#define DIGIT_SIX 0x0036 -#define DIGIT_SEVEN 0x0037 -#define DIGIT_EIGHT 0x0038 -#define DIGIT_NINE 0x0039 - -#define ISDIGIT(s) (s) == DIGIT_ZERO || \ - (s) == DIGIT_ONE || \ - (s) == DIGIT_TWO || \ - (s) == DIGIT_THREE || \ - (s) == DIGIT_FOUR || \ - (s) == DIGIT_FIVE || \ - (s) == DIGIT_SIX || \ - (s) == DIGIT_SEVEN || \ - (s) == DIGIT_EIGHT || \ - (s) == DIGIT_NINE - -/* u_scanf modifiers */ -#define MOD_H 0x0068 -#define MOD_LOWERL 0x006C -#define MOD_L 0x004C - -#define ISMOD(s) (s) == MOD_H || \ - (s) == MOD_LOWERL || \ - (s) == MOD_L - -/** - * Struct encapsulating a single uscanf format specification. - */ -typedef struct u_scanf_spec_info { - int32_t fWidth; /* Width */ - - UChar fSpec; /* Format specification */ - - UChar fPadChar; /* Padding character */ - - UBool fSkipArg; /* TRUE if arg should be skipped */ - UBool fIsLongDouble; /* L flag */ - UBool fIsShort; /* h flag */ - UBool fIsLong; /* l flag */ - UBool fIsLongLong; /* ll flag */ - UBool fIsString; /* TRUE if this is a NULL-terminated string. */ -} u_scanf_spec_info; - - -/** - * Struct encapsulating a single u_scanf format specification. - */ -typedef struct u_scanf_spec { - u_scanf_spec_info fInfo; /* Information on this spec */ - int32_t fArgPos; /* Position of data in arg list */ -} u_scanf_spec; - -/** - * Parse a single u_scanf format specifier in Unicode. - * @param fmt A pointer to a '%' character in a u_scanf format specification. - * @param spec A pointer to a <TT>u_scanf_spec</TT> to receive the parsed - * format specifier. - * @return The number of characters contained in this specifier. - */ -static int32_t -u_scanf_parse_spec (const UChar *fmt, - u_scanf_spec *spec) -{ - const UChar *s = fmt; - const UChar *backup; - u_scanf_spec_info *info = &(spec->fInfo); - - /* initialize spec to default values */ - spec->fArgPos = -1; - - info->fWidth = -1; - info->fSpec = 0x0000; - info->fPadChar = 0x0020; - info->fSkipArg = FALSE; - info->fIsLongDouble = FALSE; - info->fIsShort = FALSE; - info->fIsLong = FALSE; - info->fIsLongLong = FALSE; - info->fIsString = TRUE; - - - /* skip over the initial '%' */ - s++; - - /* Check for positional argument */ - if(ISDIGIT(*s)) { - - /* Save the current position */ - backup = s; - - /* handle positional parameters */ - if(ISDIGIT(*s)) { - spec->fArgPos = (int) (*s++ - DIGIT_ZERO); - - while(ISDIGIT(*s)) { - spec->fArgPos *= 10; - spec->fArgPos += (int) (*s++ - DIGIT_ZERO); - } - } - - /* if there is no '$', don't read anything */ - if(*s != SPEC_DOLLARSIGN) { - spec->fArgPos = -1; - s = backup; - } - /* munge the '$' */ - else - s++; - } - - /* Get any format flags */ - while(ISFLAG(*s)) { - switch(*s++) { - - /* skip argument */ - case FLAG_ASTERISK: - info->fSkipArg = TRUE; - break; - - /* pad character specified */ - case FLAG_PAREN: - - /* first four characters are hex values for pad char */ - info->fPadChar = (UChar)ufmt_digitvalue(*s++); - info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*s++)); - info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*s++)); - info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*s++)); - - /* final character is ignored */ - s++; - - break; - } - } - - /* Get the width */ - if(ISDIGIT(*s)){ - info->fWidth = (int) (*s++ - DIGIT_ZERO); - - while(ISDIGIT(*s)) { - info->fWidth *= 10; - info->fWidth += (int) (*s++ - DIGIT_ZERO); - } - } - - /* Get any modifiers */ - if(ISMOD(*s)) { - switch(*s++) { - - /* short */ - case MOD_H: - info->fIsShort = TRUE; - break; - - /* long or long long */ - case MOD_LOWERL: - if(*s == MOD_LOWERL) { - info->fIsLongLong = TRUE; - /* skip over the next 'l' */ - s++; - } - else - info->fIsLong = TRUE; - break; - - /* long double */ - case MOD_L: - info->fIsLongDouble = TRUE; - break; - } - } - - /* finally, get the specifier letter */ - info->fSpec = *s++; - - /* return # of characters in this specifier */ - return (int32_t)(s - fmt); -} - -#define UP_PERCENT 0x0025 - - -/* ANSI style formatting */ -/* Use US-ASCII characters only for formatting */ - -/* % */ -#define UFMT_SIMPLE_PERCENT {ufmt_simple_percent, u_scanf_simple_percent_handler} -/* s */ -#define UFMT_STRING {ufmt_string, u_scanf_string_handler} -/* c */ -#define UFMT_CHAR {ufmt_string, u_scanf_char_handler} -/* d, i */ -#define UFMT_INT {ufmt_int, u_scanf_integer_handler} -/* u */ -#define UFMT_UINT {ufmt_int, u_scanf_uinteger_handler} -/* o */ -#define UFMT_OCTAL {ufmt_int, u_scanf_octal_handler} -/* x, X */ -#define UFMT_HEX {ufmt_int, u_scanf_hex_handler} -/* f */ -#define UFMT_DOUBLE {ufmt_double, u_scanf_double_handler} -/* e, E */ -#define UFMT_SCIENTIFIC {ufmt_double, u_scanf_scientific_handler} -/* g, G */ -#define UFMT_SCIDBL {ufmt_double, u_scanf_scidbl_handler} -/* n */ -#define UFMT_COUNT {ufmt_count, u_scanf_count_handler} -/* [ */ -#define UFMT_SCANSET {ufmt_string, u_scanf_scanset_handler} - -/* non-ANSI extensions */ -/* Use US-ASCII characters only for formatting */ - -/* p */ -#define UFMT_POINTER {ufmt_pointer, u_scanf_pointer_handler} -/* V */ -#define UFMT_SPELLOUT {ufmt_double, u_scanf_spellout_handler} -/* P */ -#define UFMT_PERCENT {ufmt_double, u_scanf_percent_handler} -/* C K is old format */ -#define UFMT_UCHAR {ufmt_uchar, u_scanf_uchar_handler} -/* S U is old format */ -#define UFMT_USTRING {ufmt_ustring, u_scanf_ustring_handler} - - -#define UFMT_EMPTY {ufmt_empty, NULL} - -/** - * A u_scanf handler function. - * A u_scanf handler is responsible for handling a single u_scanf - * format specification, for example 'd' or 's'. - * @param stream The UFILE to which to write output. - * @param info A pointer to a <TT>u_scanf_spec_info</TT> struct containing - * information on the format specification. - * @param args A pointer to the argument data - * @param fmt A pointer to the first character in the format string - * following the spec. - * @param fmtConsumed On output, set to the number of characters consumed - * in <TT>fmt</TT>. Do nothing, if the argument isn't variable width. - * @param argConverted The number of arguments converted and assigned, or -1 if an - * error occurred. - * @return The number of code points consumed during reading. - */ -typedef int32_t (*u_scanf_handler) (UFILE *stream, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted); - -typedef struct u_scanf_info { - ufmt_type_info info; - u_scanf_handler handler; -} u_scanf_info; - -#define USCANF_NUM_FMT_HANDLERS 108 -#define USCANF_SYMBOL_BUFFER_SIZE 8 - -/* We do not use handlers for 0-0x1f */ -#define USCANF_BASE_FMT_HANDLERS 0x20 - - -static int32_t -u_scanf_skip_leading_ws(UFILE *input, - UChar pad) -{ - UChar c; - int32_t count = 0; - UBool isNotEOF; - - /* skip all leading ws in the input */ - while( (isNotEOF = ufile_getch(input, &c)) && (c == pad || u_isWhitespace(c)) ) - { - count++; - } - - /* put the final character back on the input */ - if(isNotEOF) - u_fungetc(c, input); - - return count; -} - -/* TODO: Is always skipping the prefix symbol as a positive sign a good idea in all locales? */ -static int32_t -u_scanf_skip_leading_positive_sign(UFILE *input, - UNumberFormat *format, - UErrorCode *status) -{ - UChar c; - int32_t count = 0; - UBool isNotEOF; - UChar plusSymbol[USCANF_SYMBOL_BUFFER_SIZE]; - int32_t symbolLen; - UErrorCode localStatus = U_ZERO_ERROR; - - if (U_SUCCESS(*status)) { - symbolLen = unum_getSymbol(format, - UNUM_PLUS_SIGN_SYMBOL, - plusSymbol, - UPRV_LENGTHOF(plusSymbol), - &localStatus); - - if (U_SUCCESS(localStatus)) { - /* skip all leading ws in the input */ - while( (isNotEOF = ufile_getch(input, &c)) && (count < symbolLen && c == plusSymbol[count]) ) - { - count++; - } - - /* put the final character back on the input */ - if(isNotEOF) { - u_fungetc(c, input); - } - } - } - - return count; -} - -static int32_t -u_scanf_simple_percent_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)info; - (void)args; - (void)fmt; - (void)fmtConsumed; - - /* make sure the next character in the input is a percent */ - *argConverted = 0; - if(u_fgetc(input) != 0x0025) { - *argConverted = -1; - } - return 1; -} - -static int32_t -u_scanf_count_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)input; - (void)fmt; - (void)fmtConsumed; - - /* in the special case of count, the u_scanf_spec_info's width */ - /* will contain the # of items converted thus far */ - if (!info->fSkipArg) { - if (info->fIsShort) - *(int16_t*)(args[0].ptrValue) = (int16_t)(UINT16_MAX & info->fWidth); - else if (info->fIsLongLong) - *(int64_t*)(args[0].ptrValue) = info->fWidth; - else - *(int32_t*)(args[0].ptrValue) = (int32_t)(UINT32_MAX & info->fWidth); - } - *argConverted = 0; - - /* we converted 0 args */ - return 0; -} - -static int32_t -u_scanf_double_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - double num; - UNumberFormat *format; - int32_t parsePos = 0; - int32_t skipped; - UErrorCode status = U_ZERO_ERROR; - - - /* skip all ws in the input */ - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) - len = ufmt_min(len, info->fWidth); - - /* get the formatter */ - format = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_DECIMAL); - - /* handle error */ - if(format == 0) - return 0; - - /* Skip the positive prefix. ICU normally can't handle this due to strict parsing. */ - skipped += u_scanf_skip_leading_positive_sign(input, format, &status); - - /* parse the number */ - num = unum_parseDouble(format, input->str.fPos, len, &parsePos, &status); - - if (!info->fSkipArg) { - if (info->fIsLong) - *(double*)(args[0].ptrValue) = num; - else if (info->fIsLongDouble) - *(long double*)(args[0].ptrValue) = num; - else - *(float*)(args[0].ptrValue) = (float)num; - } - - /* mask off any necessary bits */ - /* if(! info->fIsLong_double) - num &= DBL_MAX;*/ - - /* update the input's position to reflect consumed data */ - input->str.fPos += parsePos; - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return parsePos + skipped; -} - -#define UPRINTF_SYMBOL_BUFFER_SIZE 8 - -static int32_t -u_scanf_scientific_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - double num; - UNumberFormat *format; - int32_t parsePos = 0; - int32_t skipped; - UErrorCode status = U_ZERO_ERROR; - UChar srcExpBuf[UPRINTF_SYMBOL_BUFFER_SIZE]; - int32_t srcLen, expLen; - UChar expBuf[UPRINTF_SYMBOL_BUFFER_SIZE]; - - - /* skip all ws in the input */ - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) - len = ufmt_min(len, info->fWidth); - - /* get the formatter */ - format = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_SCIENTIFIC); - - /* handle error */ - if(format == 0) - return 0; - - /* set the appropriate flags on the formatter */ - - srcLen = unum_getSymbol(format, - UNUM_EXPONENTIAL_SYMBOL, - srcExpBuf, - sizeof(srcExpBuf), - &status); - - /* Upper/lower case the e */ - if (info->fSpec == (UChar)0x65 /* e */) { - expLen = u_strToLower(expBuf, (int32_t)sizeof(expBuf), - srcExpBuf, srcLen, - input->str.fBundle.fLocale, - &status); - } - else { - expLen = u_strToUpper(expBuf, (int32_t)sizeof(expBuf), - srcExpBuf, srcLen, - input->str.fBundle.fLocale, - &status); - } - - unum_setSymbol(format, - UNUM_EXPONENTIAL_SYMBOL, - expBuf, - expLen, - &status); - - - - - /* Skip the positive prefix. ICU normally can't handle this due to strict parsing. */ - skipped += u_scanf_skip_leading_positive_sign(input, format, &status); - - /* parse the number */ - num = unum_parseDouble(format, input->str.fPos, len, &parsePos, &status); - - if (!info->fSkipArg) { - if (info->fIsLong) - *(double*)(args[0].ptrValue) = num; - else if (info->fIsLongDouble) - *(long double*)(args[0].ptrValue) = num; - else - *(float*)(args[0].ptrValue) = (float)num; - } - - /* mask off any necessary bits */ - /* if(! info->fIsLong_double) - num &= DBL_MAX;*/ - - /* update the input's position to reflect consumed data */ - input->str.fPos += parsePos; - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return parsePos + skipped; -} - -static int32_t -u_scanf_scidbl_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - double num; - UNumberFormat *scientificFormat, *genericFormat; - /*int32_t scientificResult, genericResult;*/ - double scientificResult, genericResult; - int32_t scientificParsePos = 0, genericParsePos = 0, parsePos = 0; - int32_t skipped; - UErrorCode scientificStatus = U_ZERO_ERROR; - UErrorCode genericStatus = U_ZERO_ERROR; - - - /* since we can't determine by scanning the characters whether */ - /* a number was formatted in the 'f' or 'g' styles, parse the */ - /* string with both formatters, and assume whichever one */ - /* parsed the most is the correct formatter to use */ - - - /* skip all ws in the input */ - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) - len = ufmt_min(len, info->fWidth); - - /* get the formatters */ - scientificFormat = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_SCIENTIFIC); - genericFormat = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_DECIMAL); - - /* handle error */ - if(scientificFormat == 0 || genericFormat == 0) - return 0; - - /* Skip the positive prefix. ICU normally can't handle this due to strict parsing. */ - skipped += u_scanf_skip_leading_positive_sign(input, genericFormat, &genericStatus); - - /* parse the number using each format*/ - - scientificResult = unum_parseDouble(scientificFormat, input->str.fPos, len, - &scientificParsePos, &scientificStatus); - - genericResult = unum_parseDouble(genericFormat, input->str.fPos, len, - &genericParsePos, &genericStatus); - - /* determine which parse made it farther */ - if(scientificParsePos > genericParsePos) { - /* stash the result in num */ - num = scientificResult; - /* update the input's position to reflect consumed data */ - parsePos += scientificParsePos; - } - else { - /* stash the result in num */ - num = genericResult; - /* update the input's position to reflect consumed data */ - parsePos += genericParsePos; - } - input->str.fPos += parsePos; - - if (!info->fSkipArg) { - if (info->fIsLong) - *(double*)(args[0].ptrValue) = num; - else if (info->fIsLongDouble) - *(long double*)(args[0].ptrValue) = num; - else - *(float*)(args[0].ptrValue) = (float)num; - } - - /* mask off any necessary bits */ - /* if(! info->fIsLong_double) - num &= DBL_MAX;*/ - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return parsePos + skipped; -} - -static int32_t -u_scanf_integer_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - void *num = (void*) (args[0].ptrValue); - UNumberFormat *format; - int32_t parsePos = 0; - int32_t skipped; - UErrorCode status = U_ZERO_ERROR; - int64_t result; - - - /* skip all ws in the input */ - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) - len = ufmt_min(len, info->fWidth); - - /* get the formatter */ - format = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_DECIMAL); - - /* handle error */ - if(format == 0) - return 0; - - /* Skip the positive prefix. ICU normally can't handle this due to strict parsing. */ - skipped += u_scanf_skip_leading_positive_sign(input, format, &status); - - /* parse the number */ - result = unum_parseInt64(format, input->str.fPos, len, &parsePos, &status); - - /* mask off any necessary bits */ - if (!info->fSkipArg) { - if (info->fIsShort) - *(int16_t*)num = (int16_t)(UINT16_MAX & result); - else if (info->fIsLongLong) - *(int64_t*)num = result; - else - *(int32_t*)num = (int32_t)(UINT32_MAX & result); - } - - /* update the input's position to reflect consumed data */ - input->str.fPos += parsePos; - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return parsePos + skipped; -} - -static int32_t -u_scanf_uinteger_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - /* TODO Fix this when Numberformat handles uint64_t */ - return u_scanf_integer_handler(input, info, args, fmt, fmtConsumed, argConverted); -} - -static int32_t -u_scanf_percent_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - double num; - UNumberFormat *format; - int32_t parsePos = 0; - UErrorCode status = U_ZERO_ERROR; - - - /* skip all ws in the input */ - u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) - len = ufmt_min(len, info->fWidth); - - /* get the formatter */ - format = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_PERCENT); - - /* handle error */ - if(format == 0) - return 0; - - /* Skip the positive prefix. ICU normally can't handle this due to strict parsing. */ - u_scanf_skip_leading_positive_sign(input, format, &status); - - /* parse the number */ - num = unum_parseDouble(format, input->str.fPos, len, &parsePos, &status); - - if (!info->fSkipArg) { - *(double*)(args[0].ptrValue) = num; - } - - /* mask off any necessary bits */ - /* if(! info->fIsLong_double) - num &= DBL_MAX;*/ - - /* update the input's position to reflect consumed data */ - input->str.fPos += parsePos; - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return parsePos; -} - -static int32_t -u_scanf_string_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - const UChar *source; - UConverter *conv; - char *arg = (char*)(args[0].ptrValue); - char *alias = arg; - char *limit; - UErrorCode status = U_ZERO_ERROR; - int32_t count; - int32_t skipped = 0; - UChar c; - UBool isNotEOF = FALSE; - - /* skip all ws in the input */ - if (info->fIsString) { - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - } - - /* get the string one character at a time, truncating to the width */ - count = 0; - - /* open the default converter */ - conv = u_getDefaultConverter(&status); - - if(U_FAILURE(status)) - return -1; - - while( (info->fWidth == -1 || count < info->fWidth) - && (isNotEOF = ufile_getch(input, &c)) - && (!info->fIsString || (c != info->fPadChar && !u_isWhitespace(c)))) - { - - if (!info->fSkipArg) { - /* put the character from the input onto the target */ - source = &c; - /* Since we do this one character at a time, do it this way. */ - if (info->fWidth > 0) { - limit = alias + info->fWidth - count; - } - else { - limit = alias + ucnv_getMaxCharSize(conv); - } - - /* convert the character to the default codepage */ - ucnv_fromUnicode(conv, &alias, limit, &source, source + 1, - NULL, TRUE, &status); - - if(U_FAILURE(status)) { - /* clean up */ - u_releaseDefaultConverter(conv); - return -1; - } - } - - /* increment the count */ - ++count; - } - - /* put the final character we read back on the input */ - if (!info->fSkipArg) { - if ((info->fWidth == -1 || count < info->fWidth) && isNotEOF) - u_fungetc(c, input); - - /* add the terminator */ - if (info->fIsString) { - *alias = 0x00; - } - } - - /* clean up */ - u_releaseDefaultConverter(conv); - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return count + skipped; -} - -static int32_t -u_scanf_char_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - if (info->fWidth < 0) { - info->fWidth = 1; - } - info->fIsString = FALSE; - return u_scanf_string_handler(input, info, args, fmt, fmtConsumed, argConverted); -} - -static int32_t -u_scanf_ustring_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - UChar *arg = (UChar*)(args[0].ptrValue); - UChar *alias = arg; - int32_t count; - int32_t skipped = 0; - UChar c; - UBool isNotEOF = FALSE; - - /* skip all ws in the input */ - if (info->fIsString) { - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - } - - /* get the string one character at a time, truncating to the width */ - count = 0; - - while( (info->fWidth == -1 || count < info->fWidth) - && (isNotEOF = ufile_getch(input, &c)) - && (!info->fIsString || (c != info->fPadChar && !u_isWhitespace(c)))) - { - - /* put the character from the input onto the target */ - if (!info->fSkipArg) { - *alias++ = c; - } - - /* increment the count */ - ++count; - } - - /* put the final character we read back on the input */ - if (!info->fSkipArg) { - if((info->fWidth == -1 || count < info->fWidth) && isNotEOF) { - u_fungetc(c, input); - } - - /* add the terminator */ - if (info->fIsString) { - *alias = 0x0000; - } - } - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return count + skipped; -} - -static int32_t -u_scanf_uchar_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - if (info->fWidth < 0) { - info->fWidth = 1; - } - info->fIsString = FALSE; - return u_scanf_ustring_handler(input, info, args, fmt, fmtConsumed, argConverted); -} - -static int32_t -u_scanf_spellout_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - double num; - UNumberFormat *format; - int32_t parsePos = 0; - int32_t skipped; - UErrorCode status = U_ZERO_ERROR; - - - /* skip all ws in the input */ - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) - len = ufmt_min(len, info->fWidth); - - /* get the formatter */ - format = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_SPELLOUT); - - /* handle error */ - if(format == 0) - return 0; - - /* Skip the positive prefix. ICU normally can't handle this due to strict parsing. */ - /* This is not applicable to RBNF. */ - /*skipped += u_scanf_skip_leading_positive_sign(input, format, &status);*/ - - /* parse the number */ - num = unum_parseDouble(format, input->str.fPos, len, &parsePos, &status); - - if (!info->fSkipArg) { - *(double*)(args[0].ptrValue) = num; - } - - /* mask off any necessary bits */ - /* if(! info->fIsLong_double) - num &= DBL_MAX;*/ - - /* update the input's position to reflect consumed data */ - input->str.fPos += parsePos; - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return parsePos + skipped; -} - -static int32_t -u_scanf_hex_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - int32_t skipped; - void *num = (void*) (args[0].ptrValue); - int64_t result; - - /* skip all ws in the input */ - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) - len = ufmt_min(len, info->fWidth); - - /* check for alternate form */ - if( *(input->str.fPos) == 0x0030 && - (*(input->str.fPos + 1) == 0x0078 || *(input->str.fPos + 1) == 0x0058) ) { - - /* skip the '0' and 'x' or 'X' if present */ - input->str.fPos += 2; - len -= 2; - } - - /* parse the number */ - result = ufmt_uto64(input->str.fPos, &len, 16); - - /* update the input's position to reflect consumed data */ - input->str.fPos += len; - - /* mask off any necessary bits */ - if (!info->fSkipArg) { - if (info->fIsShort) - *(int16_t*)num = (int16_t)(UINT16_MAX & result); - else if (info->fIsLongLong) - *(int64_t*)num = result; - else - *(int32_t*)num = (int32_t)(UINT32_MAX & result); - } - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return len + skipped; -} - -static int32_t -u_scanf_octal_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - int32_t skipped; - void *num = (void*) (args[0].ptrValue); - int64_t result; - - /* skip all ws in the input */ - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) - len = ufmt_min(len, info->fWidth); - - /* parse the number */ - result = ufmt_uto64(input->str.fPos, &len, 8); - - /* update the input's position to reflect consumed data */ - input->str.fPos += len; - - /* mask off any necessary bits */ - if (!info->fSkipArg) { - if (info->fIsShort) - *(int16_t*)num = (int16_t)(UINT16_MAX & result); - else if (info->fIsLongLong) - *(int64_t*)num = result; - else - *(int32_t*)num = (int32_t)(UINT32_MAX & result); - } - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return len + skipped; -} - -static int32_t -u_scanf_pointer_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - (void)fmt; - (void)fmtConsumed; - - int32_t len; - int32_t skipped; - void *result; - void **p = (void**)(args[0].ptrValue); - - - /* skip all ws in the input */ - skipped = u_scanf_skip_leading_ws(input, info->fPadChar); - - /* fill the input's internal buffer */ - ufile_fill_uchar_buffer(input); - - /* determine the size of the input's buffer */ - len = (int32_t)(input->str.fLimit - input->str.fPos); - - /* truncate to the width, if specified */ - if(info->fWidth != -1) { - len = ufmt_min(len, info->fWidth); - } - - /* Make sure that we don't consume too much */ - if (len > (int32_t)(sizeof(void*)*2)) { - len = (int32_t)(sizeof(void*)*2); - } - - /* parse the pointer - assign to temporary value */ - result = ufmt_utop(input->str.fPos, &len); - - if (!info->fSkipArg) { - *p = result; - } - - /* update the input's position to reflect consumed data */ - input->str.fPos += len; - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return len + skipped; -} - -static int32_t -u_scanf_scanset_handler(UFILE *input, - u_scanf_spec_info *info, - ufmt_args *args, - const UChar *fmt, - int32_t *fmtConsumed, - int32_t *argConverted) -{ - USet *scanset; - UErrorCode status = U_ZERO_ERROR; - int32_t chLeft = INT32_MAX; - UChar32 c; - UChar *alias = (UChar*) (args[0].ptrValue); - UBool isNotEOF = FALSE; - UBool readCharacter = FALSE; - - /* Create an empty set */ - scanset = uset_open(0, -1); - - /* Back up one to get the [ */ - fmt--; - - /* truncate to the width, if specified and alias the target */ - if(info->fWidth >= 0) { - chLeft = info->fWidth; - } - - /* parse the scanset from the fmt string */ - *fmtConsumed = uset_applyPattern(scanset, fmt, -1, 0, &status); - - /* verify that the parse was successful */ - if (U_SUCCESS(status)) { - c=0; - - /* grab characters one at a time and make sure they are in the scanset */ - while(chLeft > 0) { - if ((isNotEOF = ufile_getch32(input, &c)) && uset_contains(scanset, c)) { - readCharacter = TRUE; - if (!info->fSkipArg) { - int32_t idx = 0; - UBool isError = FALSE; - - U16_APPEND(alias, idx, chLeft, c, isError); - if (isError) { - break; - } - alias += idx; - } - chLeft -= (1 + U_IS_SUPPLEMENTARY(c)); - } - else { - /* if the character's not in the scanset, break out */ - break; - } - } - - /* put the final character we read back on the input */ - if(isNotEOF && chLeft > 0) { - u_fungetc(c, input); - } - } - - uset_close(scanset); - - /* if we didn't match at least 1 character, fail */ - if(!readCharacter) - return -1; - /* otherwise, add the terminator */ - else if (!info->fSkipArg) { - *alias = 0x00; - } - - /* we converted 1 arg */ - *argConverted = !info->fSkipArg; - return (info->fWidth >= 0 ? info->fWidth : INT32_MAX) - chLeft; -} - -/* Use US-ASCII characters only for formatting. Most codepages have - characters 20-7F from Unicode. Using any other codepage specific - characters will make it very difficult to format the string on - non-Unicode machines */ -static const u_scanf_info g_u_scanf_infos[USCANF_NUM_FMT_HANDLERS] = { -/* 0x20 */ - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - UFMT_EMPTY, UFMT_SIMPLE_PERCENT,UFMT_EMPTY, UFMT_EMPTY, - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - -/* 0x30 */ - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - -/* 0x40 */ - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_UCHAR, - UFMT_EMPTY, UFMT_SCIENTIFIC, UFMT_EMPTY, UFMT_SCIDBL, -#ifdef U_USE_OBSOLETE_IO_FORMATTING - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_UCHAR/*deprecated*/, -#else - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, -#endif - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - -/* 0x50 */ - UFMT_PERCENT, UFMT_EMPTY, UFMT_EMPTY, UFMT_USTRING, -#ifdef U_USE_OBSOLETE_IO_FORMATTING - UFMT_EMPTY, UFMT_USTRING/*deprecated*/,UFMT_SPELLOUT, UFMT_EMPTY, -#else - UFMT_EMPTY, UFMT_EMPTY, UFMT_SPELLOUT, UFMT_EMPTY, -#endif - UFMT_HEX, UFMT_EMPTY, UFMT_EMPTY, UFMT_SCANSET, - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - -/* 0x60 */ - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_CHAR, - UFMT_INT, UFMT_SCIENTIFIC, UFMT_DOUBLE, UFMT_SCIDBL, - UFMT_EMPTY, UFMT_INT, UFMT_EMPTY, UFMT_EMPTY, - UFMT_EMPTY, UFMT_EMPTY, UFMT_COUNT, UFMT_OCTAL, - -/* 0x70 */ - UFMT_POINTER, UFMT_EMPTY, UFMT_EMPTY, UFMT_STRING, - UFMT_EMPTY, UFMT_UINT, UFMT_EMPTY, UFMT_EMPTY, - UFMT_HEX, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, - UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, -}; - -U_CFUNC int32_t -u_scanf_parse(UFILE *f, - const UChar *patternSpecification, - va_list ap) -{ - const UChar *alias; - int32_t count, converted, argConsumed, cpConsumed; - uint16_t handlerNum; - - ufmt_args args; - u_scanf_spec spec; - ufmt_type_info info; - u_scanf_handler handler; - - /* alias the pattern */ - alias = patternSpecification; - - /* haven't converted anything yet */ - argConsumed = 0; - converted = 0; - cpConsumed = 0; - - /* iterate through the pattern */ - for(;;) { - - /* match any characters up to the next '%' */ - while(*alias != UP_PERCENT && *alias != 0x0000 && u_fgetc(f) == *alias) { - alias++; - } - - /* if we aren't at a '%', or if we're at end of string, break*/ - if(*alias != UP_PERCENT || *alias == 0x0000) - break; - - /* parse the specifier */ - count = u_scanf_parse_spec(alias, &spec); - - /* update the pointer in pattern */ - alias += count; - - handlerNum = (uint16_t)(spec.fInfo.fSpec - USCANF_BASE_FMT_HANDLERS); - if (handlerNum < USCANF_NUM_FMT_HANDLERS) { - /* skip the argument, if necessary */ - /* query the info function for argument information */ - info = g_u_scanf_infos[ handlerNum ].info; - if (info != ufmt_count && u_feof(f)) { - break; - } - else if(spec.fInfo.fSkipArg) { - args.ptrValue = NULL; - } - else { - switch(info) { - case ufmt_count: - /* set the spec's width to the # of items converted */ - spec.fInfo.fWidth = cpConsumed; - U_FALLTHROUGH; - case ufmt_char: - case ufmt_uchar: - case ufmt_int: - case ufmt_string: - case ufmt_ustring: - case ufmt_pointer: - case ufmt_float: - case ufmt_double: - args.ptrValue = va_arg(ap, void*); - break; - - default: - /* else args is ignored */ - args.ptrValue = NULL; - break; - } - } - - /* call the handler function */ - handler = g_u_scanf_infos[ handlerNum ].handler; - if(handler != 0) { - - /* reset count to 1 so that += for alias works. */ - count = 1; - - cpConsumed += (*handler)(f, &spec.fInfo, &args, alias, &count, &argConsumed); - - /* if the handler encountered an error condition, break */ - if(argConsumed < 0) { - converted = -1; - break; - } - - /* add to the # of items converted */ - converted += argConsumed; - - /* update the pointer in pattern */ - alias += count-1; - } - /* else do nothing */ - } - /* else do nothing */ - - /* just ignore unknown tags */ - } - - /* return # of items converted */ - return converted; -} - -#endif /* #if !UCONFIG_NO_FORMATTING */ |