/* ****************************************************************************** * * Copyright (C) 1998-2001, International Business Machines * Corporation and others. All Rights Reserved. * ****************************************************************************** * * File uscanf.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 #include "unicode/uchar.h" #include "uscanf.h" #include "uscanf_p.h" #include "uscanset.h" #include "unicode/ustdio.h" #include "ufile.h" #include "unicode/ustring.h" #include "locbund.h" #include "unicode/unum.h" #include "unicode/udat.h" #include "cmemory.h" #include "ustr_imp.h" /* --- Prototypes ---------------------------- */ int32_t u_scanf_simple_percent_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_ustring_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_count_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_integer_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_uinteger_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_double_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_scientific_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_scidbl_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_currency_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_percent_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_date_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_time_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_char_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_uchar_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_spellout_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_hex_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_octal_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_pointer_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_string_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); int32_t u_scanf_scanset_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed); /* 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} /* TODO: Is this also suppose to be ufmt_ustring */ /* non-ANSI extensions */ /* Use US-ASCII characters only for formatting */ /* p */ #define UFMT_POINTER {ufmt_pointer, u_scanf_pointer_handler} /* D */ #define UFMT_DATE {ufmt_date, u_scanf_date_handler} /* T */ #define UFMT_TIME {ufmt_date, u_scanf_time_handler} /* V */ #define UFMT_SPELLOUT {ufmt_double, u_scanf_spellout_handler} /* P */ #define UFMT_PERCENT {ufmt_double, u_scanf_percent_handler} /* M */ #define UFMT_CURRENCY {ufmt_double, u_scanf_currency_handler} /* K */ #define UFMT_UCHAR {ufmt_uchar, u_scanf_uchar_handler} /* U */ #define UFMT_USTRING {ufmt_ustring, u_scanf_ustring_handler} #define UFMT_EMPTY {ufmt_empty, NULL} struct u_scanf_info { ufmt_type_info info; u_scanf_handler handler; }; typedef struct u_scanf_info u_scanf_info; /* 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[108] = { /* 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_EMPTY, UFMT_DATE, UFMT_SCIENTIFIC, UFMT_EMPTY, UFMT_SCIDBL, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_UCHAR, UFMT_EMPTY, UFMT_CURRENCY, UFMT_EMPTY, UFMT_EMPTY, /* 0x50 */ UFMT_PERCENT, UFMT_EMPTY, UFMT_EMPTY, UFMT_EMPTY, UFMT_TIME, UFMT_USTRING, UFMT_SPELLOUT, UFMT_EMPTY, 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, }; #define USCANF_NUM_FMT_HANDLERS sizeof(g_u_scanf_infos) /* We do not use handlers for 0-0x1f */ #define USCANF_BASE_FMT_HANDLERS 0x20 int32_t u_fscanf(UFILE *f, const char *patternSpecification, ... ) { va_list ap; int32_t converted; va_start(ap, patternSpecification); converted = u_vfscanf(f, patternSpecification, ap); va_end(ap); return converted; } int32_t u_fscanf_u(UFILE *f, const UChar *patternSpecification, ... ) { va_list ap; int32_t converted; va_start(ap, patternSpecification); converted = u_vfscanf_u(f, patternSpecification, ap); va_end(ap); return converted; } U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */ u_vfscanf(UFILE *f, const char *patternSpecification, va_list ap) { int32_t converted; UChar *pattern; /* convert from the default codepage to Unicode */ pattern = ufmt_defaultCPToUnicode(patternSpecification, strlen(patternSpecification)+1); if(pattern == 0) { return 0; } /* do the work */ converted = u_vfscanf_u(f, pattern, ap); /* clean up */ uprv_free(pattern); return converted; } static int32_t u_scanf_skip_leading_ws(UFILE *stream, UChar pad) { UChar c; int32_t count = 0; /* skip all leading ws in the stream */ while( ((c = u_fgetc(stream)) != U_EOF) && (c == pad || u_isWhitespace(c)) ) ++count; /* put the final character back on the stream */ if(c != U_EOF) u_fungetc(c, stream); return count; } int32_t u_scanf_simple_percent_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { /* make sure the next character in the stream is a percent */ if(u_fgetc(stream) != 0x0025) return -1; else return 0; } int32_t u_scanf_string_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { UChar c; int32_t count; const UChar *source; UConverter *conv; UErrorCode status = U_ZERO_ERROR; char *arg = (char*)(args[0].ptrValue); char *alias = arg; char *limit; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, 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( ((c = u_fgetc(stream)) != U_EOF) && (c != info->fPadChar && !u_isWhitespace(c)) && (info->fWidth == -1 || count < info->fWidth) ) { /* put the character from the stream onto the target */ source = &c; /* Since we do this one character at a time, do it this way. */ 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 stream */ if(c != U_EOF) u_fungetc(c, stream); /* add the terminator */ *alias = 0x00; /* clean up */ u_releaseDefaultConverter(conv); /* we converted 1 arg */ return 1; } int32_t u_scanf_ustring_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { UChar c; int32_t count; UChar *arg = (UChar*)(args[0].ptrValue); UChar *alias = arg; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* get the string one character at a time, truncating to the width */ count = 0; while( ((c = u_fgetc(stream)) != U_EOF) && (c != info->fPadChar && ! u_isWhitespace(c)) && (info->fWidth == -1 || count < info->fWidth) ) { /* put the character from the stream onto the target */ *alias++ = c; /* increment the count */ ++count; } /* put the final character we read back on the stream */ if(c != U_EOF) u_fungetc(c, stream); /* add the terminator */ *alias = 0x0000; /* we converted 1 arg */ return 1; } int32_t u_scanf_count_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int *converted = (int*)(args[0].ptrValue); /* in the special case of count, the u_scanf_spec_info's width */ /* will contain the # of items converted thus far */ *converted = info->fWidth; /* we converted 0 args */ return 0; } int32_t u_scanf_integer_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; long *num = (long*) (args[0].ptrValue); UNumberFormat *format; int32_t parsePos = 0; UErrorCode status = U_ZERO_ERROR; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatter */ format = u_locbund_getNumberFormat(stream->fBundle); /* handle error */ if(format == 0) return 0; /* parse the number */ *num = unum_parse(format, stream->fUCPos, len, &parsePos, &status); /* mask off any necessary bits */ if(info->fIsShort) *num &= UINT16_MAX; else if(! info->fIsLong || ! info->fIsLongLong) *num &= UINT32_MAX; /* update the stream's position to reflect consumed data */ stream->fUCPos += parsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_uinteger_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { ufmt_args uint_args; int32_t converted_args; uint32_t *num = (uint32_t*) (args[0].ptrValue); double currDouble; memcpy(&uint_args, args, sizeof(ufmt_args)); uint_args.ptrValue = &currDouble; converted_args = u_scanf_double_handler(stream, info, &uint_args, fmt, consumed); *num = (uint32_t)currDouble; return converted_args; } int32_t u_scanf_double_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; double *num = (double*) (args[0].ptrValue); UNumberFormat *format; int32_t parsePos = 0; UErrorCode status = U_ZERO_ERROR; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatter */ format = u_locbund_getNumberFormat(stream->fBundle); /* handle error */ if(format == 0) return 0; /* parse the number */ *num = unum_parseDouble(format, stream->fUCPos, len, &parsePos, &status); /* mask off any necessary bits */ /* if(! info->fIsLong_double) num &= DBL_MAX;*/ /* update the stream's position to reflect consumed data */ stream->fUCPos += parsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_scientific_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; double *num = (double*) (args[0].ptrValue); UNumberFormat *format; int32_t parsePos = 0; UErrorCode status = U_ZERO_ERROR; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatter */ format = u_locbund_getScientificFormat(stream->fBundle); /* handle error */ if(format == 0) return 0; /* parse the number */ *num = unum_parseDouble(format, stream->fUCPos, len, &parsePos, &status); /* mask off any necessary bits */ /* if(! info->fIsLong_double) num &= DBL_MAX;*/ /* update the stream's position to reflect consumed data */ stream->fUCPos += parsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_scidbl_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; double *num = (double*) (args[0].ptrValue); UNumberFormat *scientificFormat, *genericFormat; /*int32_t scientificResult, genericResult;*/ double scientificResult, genericResult; int32_t scientificParsePos = 0, genericParsePos = 0; UErrorCode scientificStatus = U_ZERO_ERROR; UErrorCode genericStatus = U_ZERO_ERROR; UBool useScientific; /* 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 stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatters */ scientificFormat = u_locbund_getScientificFormat(stream->fBundle); genericFormat = u_locbund_getNumberFormat(stream->fBundle); /* handle error */ if(scientificFormat == 0 || genericFormat == 0) return 0; /* parse the number using each format*/ scientificResult = unum_parseDouble(scientificFormat, stream->fUCPos, len, &scientificParsePos, &scientificStatus); genericResult = unum_parseDouble(genericFormat, stream->fUCPos, len, &genericParsePos, &genericStatus); /* determine which parse made it farther */ useScientific = (UBool)(scientificParsePos > genericParsePos); /* stash the result in num */ *num = useScientific ? scientificResult : genericResult; /* mask off any necessary bits */ /* if(! info->fIsLong_double) num &= DBL_MAX;*/ /* update the stream's position to reflect consumed data */ stream->fUCPos += useScientific ? scientificParsePos : genericParsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_currency_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; double *num = (double*) (args[0].ptrValue); UNumberFormat *format; int32_t parsePos = 0; UErrorCode status = U_ZERO_ERROR; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatter */ format = u_locbund_getCurrencyFormat(stream->fBundle); /* handle error */ if(format == 0) return 0; /* parse the number */ *num = unum_parseDouble(format, stream->fUCPos, len, &parsePos, &status); /* mask off any necessary bits */ /* if(! info->fIsLong_double) num &= DBL_MAX;*/ /* update the stream's position to reflect consumed data */ stream->fUCPos += parsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_percent_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; double *num = (double*) (args[0].ptrValue); UNumberFormat *format; int32_t parsePos = 0; UErrorCode status = U_ZERO_ERROR; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatter */ format = u_locbund_getPercentFormat(stream->fBundle); /* handle error */ if(format == 0) return 0; /* parse the number */ *num = unum_parseDouble(format, stream->fUCPos, len, &parsePos, &status); /* mask off any necessary bits */ /* if(! info->fIsLong_double) num &= DBL_MAX;*/ /* update the stream's position to reflect consumed data */ stream->fUCPos += parsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_date_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; UDate *date = (UDate*) (args[0].ptrValue); UDateFormat *format; int32_t parsePos = 0; UErrorCode status = U_ZERO_ERROR; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatter */ format = u_locbund_getDateFormat(stream->fBundle); /* handle error */ if(format == 0) return 0; /* parse the number */ *date = udat_parse(format, stream->fUCPos, len, &parsePos, &status); /* update the stream's position to reflect consumed data */ stream->fUCPos += parsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_time_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; UDate *time = (UDate*) (args[0].ptrValue); UDateFormat *format; int32_t parsePos = 0; UErrorCode status = U_ZERO_ERROR; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatter */ format = u_locbund_getTimeFormat(stream->fBundle); /* handle error */ if(format == 0) return 0; /* parse the number */ *time = udat_parse(format, stream->fUCPos, len, &parsePos, &status); /* update the stream's position to reflect consumed data */ stream->fUCPos += parsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_char_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { UChar uc = 0; char *result; char *c = (char*)(args[0].ptrValue); /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* get the character from the stream, truncating to the width */ if(info->fWidth == -1 || info->fWidth > 1) uc = u_fgetc(stream); /* handle EOF */ if(uc == U_EOF) return -1; /* convert the character to the default codepage */ result = ufmt_unicodeToDefaultCP(&uc, 1); *c = result[0]; /* clean up */ uprv_free(result); /* we converted 1 arg */ return 1; } int32_t u_scanf_uchar_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { UChar *c = (UChar*)(args[0].ptrValue); /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* get the character from the stream, truncating to the width */ if(info->fWidth == -1 || info->fWidth > 1) *c = u_fgetc(stream); /* handle EOF */ if(*c == U_EOF) return -1; /* we converted 1 arg */ return 1; } int32_t u_scanf_spellout_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; double *num = (double*) (args[0].ptrValue); UNumberFormat *format; int32_t parsePos = 0; UErrorCode status = U_ZERO_ERROR; /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* get the formatter */ format = u_locbund_getSpelloutFormat(stream->fBundle); /* handle error */ if(format == 0) return 0; /* parse the number */ *num = unum_parseDouble(format, stream->fUCPos, len, &parsePos, &status); /* mask off any necessary bits */ /* if(! info->fIsLong_double) num &= DBL_MAX;*/ /* update the stream's position to reflect consumed data */ stream->fUCPos += parsePos; /* we converted 1 arg */ return 1; } int32_t u_scanf_hex_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; long *num = (long*) (args[0].ptrValue); /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* check for alternate form */ if( *(stream->fUCPos) == 0x0030 && (*(stream->fUCPos + 1) == 0x0078 || *(stream->fUCPos + 1) == 0x0058) ) { /* skip the '0' and 'x' or 'X' if present */ stream->fUCPos += 2; len -= 2; } /* parse the number */ *num = ufmt_utol(stream->fUCPos, &len, 16); /* update the stream's position to reflect consumed data */ stream->fUCPos += len; /* mask off any necessary bits */ if(info->fIsShort) *num &= UINT16_MAX; else if(! info->fIsLong || ! info->fIsLongLong) *num &= UINT32_MAX; /* we converted 1 arg */ return 1; } int32_t u_scanf_octal_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; long *num = (long*) (args[0].ptrValue); /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* parse the number */ *num = ufmt_utol(stream->fUCPos, &len, 8); /* update the stream's position to reflect consumed data */ stream->fUCPos += len; /* mask off any necessary bits */ if(info->fIsShort) *num &= UINT16_MAX; else if(! info->fIsLong || ! info->fIsLongLong) *num &= UINT32_MAX; /* we converted 1 arg */ return 1; } int32_t u_scanf_pointer_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { int32_t len; void *p = (void*)(args[0].ptrValue); /* skip all ws in the stream */ u_scanf_skip_leading_ws(stream, info->fPadChar); /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* parse the pointer - cast to void** to assign to *p */ *(void**)p = (void*) ufmt_utol(stream->fUCPos, &len, 16); /* update the stream's position to reflect consumed data */ stream->fUCPos += len; /* we converted 1 arg */ return 1; } int32_t u_scanf_scanset_handler(UFILE *stream, const u_scanf_spec_info *info, ufmt_args *args, const UChar *fmt, int32_t *consumed) { u_scanf_scanset scanset; int32_t len; UBool success; UChar c; UChar *s = (UChar*) (args[0].ptrValue); UChar *alias, *limit; /* fill the stream's internal buffer */ ufile_fill_uchar_buffer(stream); /* determine the size of the stream's buffer */ len = stream->fUCLimit - stream->fUCPos; /* truncate to the width, if specified */ if(info->fWidth != -1) len = ufmt_min(len, info->fWidth); /* alias the target */ alias = s; limit = alias + len; /* parse the scanset from the fmt string */ *consumed = u_strlen(fmt); success = u_scanf_scanset_init(&scanset, fmt, consumed); /* increment consumed by one to eat the final ']' */ ++(*consumed); /* verify that the parse was successful and the converter opened */ if(! success) return -1; /* grab characters one at a time and make sure they are in the scanset */ while( (c = u_fgetc(stream)) != U_EOF && alias < limit) { if(u_scanf_scanset_in(&scanset, c)) { *(alias++) = c; } else { /* if the character's not in the scanset, break out */ break; } } /* put the final character we read back on the stream */ if(c != U_EOF) u_fungetc(c, stream); /* if we didn't match at least 1 character, fail */ if(alias == s) return -1; /* otherwise, add the terminator */ else *alias = 0x00; /* we converted 1 arg */ return 1; } #define UP_PERCENT 0x0025 U_CAPI int32_t U_EXPORT2 /* U_CAPI ... U_EXPORT2 added by Peter Kirk 17 Nov 2001 */ u_vfscanf_u(UFILE *f, const UChar *patternSpecification, va_list ap) { u_scanf_spec spec; const UChar *alias; int32_t count, converted, temp; uint16_t handlerNum; ufmt_args args; ufmt_type_info info; u_scanf_handler handler; /* alias the pattern */ alias = patternSpecification; /* haven't converted anything yet */ converted = 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; /* skip the argument, if necessary */ if(spec.fSkipArg) args.ptrValue = va_arg(ap, int*); handlerNum = (uint16_t)(spec.fInfo.fSpec - USCANF_BASE_FMT_HANDLERS); if (handlerNum < USCANF_NUM_FMT_HANDLERS) { /* query the info function for argument information */ info = g_u_scanf_infos[ handlerNum ].info; if(info > ufmt_simple_percent) { switch(info) { case ufmt_count: args.intValue = va_arg(ap, int); /* set the spec's width to the # of items converted */ spec.fInfo.fWidth = converted; break; case ufmt_char: case ufmt_uchar: case ufmt_int: args.ptrValue = va_arg(ap, int*); break; case ufmt_wchar: args.ptrValue = va_arg(ap, wchar_t*); break; case ufmt_string: args.ptrValue = va_arg(ap, char*); break; case ufmt_wstring: args.ptrValue = va_arg(ap, wchar_t*); break; case ufmt_pointer: args.ptrValue = va_arg(ap, void*); break; case ufmt_float: args.ptrValue = va_arg(ap, float*); break; case ufmt_double: args.ptrValue = va_arg(ap, double*); break; case ufmt_date: args.ptrValue = va_arg(ap, UDate*); break; case ufmt_ustring: args.ptrValue = va_arg(ap, UChar*); break; default: break; /* Should never get here */ } } /* call the handler function */ handler = g_u_scanf_infos[ handlerNum ].handler; if(handler != 0) { /* reset count */ count = 0; temp = (*handler)(f, &spec.fInfo, &args, alias, &count); /* if the handler encountered an error condition, break */ if(temp == -1) break; /* add to the # of items converted */ converted += temp; /* update the pointer in pattern */ alias += count; } /* else do nothing */ } /* else do nothing */ /* just ignore unknown tags */ } /* return # of items converted */ return converted; } #endif /* #if !UCONFIG_NO_FORMATTING */