1407 lines
42 KiB
C
1407 lines
42 KiB
C
/*
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*******************************************************************************
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*
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* Copyright (C) 1998-2014, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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*
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* File uscnnf_p.c
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*
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* Modification History:
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*
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* Date Name Description
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* 12/02/98 stephen Creation.
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* 03/13/99 stephen Modified for new C API.
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*******************************************************************************
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*/
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#include "unicode/utypes.h"
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#if !UCONFIG_NO_FORMATTING && !UCONFIG_NO_CONVERSION
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#include "unicode/uchar.h"
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#include "unicode/ustring.h"
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#include "unicode/unum.h"
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#include "unicode/udat.h"
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#include "unicode/uset.h"
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#include "uscanf.h"
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#include "ufmt_cmn.h"
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#include "ufile.h"
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#include "locbund.h"
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#include "cmemory.h"
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#include "ustr_cnv.h"
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/* flag characters for u_scanf */
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#define FLAG_ASTERISK 0x002A
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#define FLAG_PAREN 0x0028
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#define ISFLAG(s) (s) == FLAG_ASTERISK || \
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(s) == FLAG_PAREN
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/* special characters for u_scanf */
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#define SPEC_DOLLARSIGN 0x0024
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/* unicode digits */
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#define DIGIT_ZERO 0x0030
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#define DIGIT_ONE 0x0031
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#define DIGIT_TWO 0x0032
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#define DIGIT_THREE 0x0033
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#define DIGIT_FOUR 0x0034
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#define DIGIT_FIVE 0x0035
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#define DIGIT_SIX 0x0036
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#define DIGIT_SEVEN 0x0037
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#define DIGIT_EIGHT 0x0038
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#define DIGIT_NINE 0x0039
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#define ISDIGIT(s) (s) == DIGIT_ZERO || \
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(s) == DIGIT_ONE || \
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(s) == DIGIT_TWO || \
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(s) == DIGIT_THREE || \
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(s) == DIGIT_FOUR || \
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(s) == DIGIT_FIVE || \
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(s) == DIGIT_SIX || \
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(s) == DIGIT_SEVEN || \
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(s) == DIGIT_EIGHT || \
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(s) == DIGIT_NINE
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/* u_scanf modifiers */
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#define MOD_H 0x0068
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#define MOD_LOWERL 0x006C
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#define MOD_L 0x004C
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#define ISMOD(s) (s) == MOD_H || \
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(s) == MOD_LOWERL || \
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(s) == MOD_L
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/**
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* Struct encapsulating a single uscanf format specification.
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*/
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typedef struct u_scanf_spec_info {
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int32_t fWidth; /* Width */
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UChar fSpec; /* Format specification */
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UChar fPadChar; /* Padding character */
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UBool fSkipArg; /* TRUE if arg should be skipped */
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UBool fIsLongDouble; /* L flag */
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UBool fIsShort; /* h flag */
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UBool fIsLong; /* l flag */
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UBool fIsLongLong; /* ll flag */
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UBool fIsString; /* TRUE if this is a NULL-terminated string. */
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} u_scanf_spec_info;
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/**
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* Struct encapsulating a single u_scanf format specification.
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*/
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typedef struct u_scanf_spec {
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u_scanf_spec_info fInfo; /* Information on this spec */
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int32_t fArgPos; /* Position of data in arg list */
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} u_scanf_spec;
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/**
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* Parse a single u_scanf format specifier in Unicode.
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* @param fmt A pointer to a '%' character in a u_scanf format specification.
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* @param spec A pointer to a <TT>u_scanf_spec</TT> to receive the parsed
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* format specifier.
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* @return The number of characters contained in this specifier.
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*/
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static int32_t
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u_scanf_parse_spec (const UChar *fmt,
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u_scanf_spec *spec)
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{
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const UChar *s = fmt;
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const UChar *backup;
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u_scanf_spec_info *info = &(spec->fInfo);
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/* initialize spec to default values */
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spec->fArgPos = -1;
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info->fWidth = -1;
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info->fSpec = 0x0000;
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info->fPadChar = 0x0020;
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info->fSkipArg = FALSE;
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info->fIsLongDouble = FALSE;
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info->fIsShort = FALSE;
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info->fIsLong = FALSE;
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info->fIsLongLong = FALSE;
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info->fIsString = TRUE;
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/* skip over the initial '%' */
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s++;
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/* Check for positional argument */
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if(ISDIGIT(*s)) {
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/* Save the current position */
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backup = s;
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/* handle positional parameters */
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if(ISDIGIT(*s)) {
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spec->fArgPos = (int) (*s++ - DIGIT_ZERO);
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while(ISDIGIT(*s)) {
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spec->fArgPos *= 10;
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spec->fArgPos += (int) (*s++ - DIGIT_ZERO);
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}
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}
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/* if there is no '$', don't read anything */
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if(*s != SPEC_DOLLARSIGN) {
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spec->fArgPos = -1;
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s = backup;
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}
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/* munge the '$' */
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else
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s++;
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}
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/* Get any format flags */
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while(ISFLAG(*s)) {
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switch(*s++) {
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/* skip argument */
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case FLAG_ASTERISK:
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info->fSkipArg = TRUE;
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break;
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/* pad character specified */
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case FLAG_PAREN:
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/* first four characters are hex values for pad char */
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info->fPadChar = (UChar)ufmt_digitvalue(*s++);
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info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*s++));
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info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*s++));
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info->fPadChar = (UChar)((info->fPadChar * 16) + ufmt_digitvalue(*s++));
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/* final character is ignored */
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s++;
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break;
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}
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}
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/* Get the width */
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if(ISDIGIT(*s)){
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info->fWidth = (int) (*s++ - DIGIT_ZERO);
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while(ISDIGIT(*s)) {
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info->fWidth *= 10;
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info->fWidth += (int) (*s++ - DIGIT_ZERO);
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}
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}
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/* Get any modifiers */
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if(ISMOD(*s)) {
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switch(*s++) {
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/* short */
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case MOD_H:
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info->fIsShort = TRUE;
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break;
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/* long or long long */
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case MOD_LOWERL:
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if(*s == MOD_LOWERL) {
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info->fIsLongLong = TRUE;
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/* skip over the next 'l' */
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s++;
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}
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else
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info->fIsLong = TRUE;
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break;
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/* long double */
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case MOD_L:
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info->fIsLongDouble = TRUE;
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break;
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}
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}
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/* finally, get the specifier letter */
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info->fSpec = *s++;
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/* return # of characters in this specifier */
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return (int32_t)(s - fmt);
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}
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#define UP_PERCENT 0x0025
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/* ANSI style formatting */
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/* Use US-ASCII characters only for formatting */
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/* % */
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#define UFMT_SIMPLE_PERCENT {ufmt_simple_percent, u_scanf_simple_percent_handler}
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/* s */
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#define UFMT_STRING {ufmt_string, u_scanf_string_handler}
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/* c */
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#define UFMT_CHAR {ufmt_string, u_scanf_char_handler}
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/* d, i */
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#define UFMT_INT {ufmt_int, u_scanf_integer_handler}
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/* u */
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#define UFMT_UINT {ufmt_int, u_scanf_uinteger_handler}
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/* o */
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#define UFMT_OCTAL {ufmt_int, u_scanf_octal_handler}
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/* x, X */
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#define UFMT_HEX {ufmt_int, u_scanf_hex_handler}
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/* f */
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#define UFMT_DOUBLE {ufmt_double, u_scanf_double_handler}
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/* e, E */
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#define UFMT_SCIENTIFIC {ufmt_double, u_scanf_scientific_handler}
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/* g, G */
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#define UFMT_SCIDBL {ufmt_double, u_scanf_scidbl_handler}
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/* n */
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#define UFMT_COUNT {ufmt_count, u_scanf_count_handler}
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/* [ */
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#define UFMT_SCANSET {ufmt_string, u_scanf_scanset_handler}
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/* non-ANSI extensions */
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/* Use US-ASCII characters only for formatting */
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/* p */
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#define UFMT_POINTER {ufmt_pointer, u_scanf_pointer_handler}
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/* V */
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#define UFMT_SPELLOUT {ufmt_double, u_scanf_spellout_handler}
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/* P */
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#define UFMT_PERCENT {ufmt_double, u_scanf_percent_handler}
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/* C K is old format */
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#define UFMT_UCHAR {ufmt_uchar, u_scanf_uchar_handler}
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/* S U is old format */
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#define UFMT_USTRING {ufmt_ustring, u_scanf_ustring_handler}
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#define UFMT_EMPTY {ufmt_empty, NULL}
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/**
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* A u_scanf handler function.
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* A u_scanf handler is responsible for handling a single u_scanf
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* format specification, for example 'd' or 's'.
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* @param stream The UFILE to which to write output.
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* @param info A pointer to a <TT>u_scanf_spec_info</TT> struct containing
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* information on the format specification.
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* @param args A pointer to the argument data
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* @param fmt A pointer to the first character in the format string
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* following the spec.
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* @param fmtConsumed On output, set to the number of characters consumed
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* in <TT>fmt</TT>. Do nothing, if the argument isn't variable width.
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* @param argConverted The number of arguments converted and assigned, or -1 if an
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* error occurred.
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* @return The number of code points consumed during reading.
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*/
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typedef int32_t (*u_scanf_handler) (UFILE *stream,
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u_scanf_spec_info *info,
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ufmt_args *args,
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const UChar *fmt,
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int32_t *fmtConsumed,
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int32_t *argConverted);
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typedef struct u_scanf_info {
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ufmt_type_info info;
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u_scanf_handler handler;
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} u_scanf_info;
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#define USCANF_NUM_FMT_HANDLERS 108
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#define USCANF_SYMBOL_BUFFER_SIZE 8
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/* We do not use handlers for 0-0x1f */
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#define USCANF_BASE_FMT_HANDLERS 0x20
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static int32_t
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u_scanf_skip_leading_ws(UFILE *input,
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UChar pad)
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{
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UChar c;
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int32_t count = 0;
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UBool isNotEOF;
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/* skip all leading ws in the input */
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while( (isNotEOF = ufile_getch(input, &c)) && (c == pad || u_isWhitespace(c)) )
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{
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count++;
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}
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/* put the final character back on the input */
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if(isNotEOF)
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u_fungetc(c, input);
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return count;
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}
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/* TODO: Is always skipping the prefix symbol as a positive sign a good idea in all locales? */
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static int32_t
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u_scanf_skip_leading_positive_sign(UFILE *input,
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UNumberFormat *format,
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UErrorCode *status)
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{
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UChar c;
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int32_t count = 0;
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UBool isNotEOF;
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UChar plusSymbol[USCANF_SYMBOL_BUFFER_SIZE];
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int32_t symbolLen;
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UErrorCode localStatus = U_ZERO_ERROR;
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if (U_SUCCESS(*status)) {
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symbolLen = unum_getSymbol(format,
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UNUM_PLUS_SIGN_SYMBOL,
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plusSymbol,
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sizeof(plusSymbol)/sizeof(*plusSymbol),
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&localStatus);
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if (U_SUCCESS(localStatus)) {
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/* skip all leading ws in the input */
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while( (isNotEOF = ufile_getch(input, &c)) && (count < symbolLen && c == plusSymbol[count]) )
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{
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count++;
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}
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/* put the final character back on the input */
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if(isNotEOF) {
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u_fungetc(c, input);
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}
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}
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}
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return count;
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}
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static int32_t
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u_scanf_simple_percent_handler(UFILE *input,
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u_scanf_spec_info *info,
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ufmt_args *args,
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const UChar *fmt,
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int32_t *fmtConsumed,
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int32_t *argConverted)
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{
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/* make sure the next character in the input is a percent */
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*argConverted = 0;
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if(u_fgetc(input) != 0x0025) {
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*argConverted = -1;
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}
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return 1;
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}
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static int32_t
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u_scanf_count_handler(UFILE *input,
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u_scanf_spec_info *info,
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ufmt_args *args,
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const UChar *fmt,
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int32_t *fmtConsumed,
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int32_t *argConverted)
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{
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/* in the special case of count, the u_scanf_spec_info's width */
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/* will contain the # of items converted thus far */
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if (!info->fSkipArg) {
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if (info->fIsShort)
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*(int16_t*)(args[0].ptrValue) = (int16_t)(UINT16_MAX & info->fWidth);
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else if (info->fIsLongLong)
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*(int64_t*)(args[0].ptrValue) = info->fWidth;
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else
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*(int32_t*)(args[0].ptrValue) = (int32_t)(UINT32_MAX & info->fWidth);
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}
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*argConverted = 0;
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/* we converted 0 args */
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return 0;
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}
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static int32_t
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u_scanf_double_handler(UFILE *input,
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u_scanf_spec_info *info,
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ufmt_args *args,
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const UChar *fmt,
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int32_t *fmtConsumed,
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int32_t *argConverted)
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{
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int32_t len;
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double num;
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UNumberFormat *format;
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int32_t parsePos = 0;
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int32_t skipped;
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UErrorCode status = U_ZERO_ERROR;
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/* skip all ws in the input */
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skipped = u_scanf_skip_leading_ws(input, info->fPadChar);
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/* fill the input's internal buffer */
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ufile_fill_uchar_buffer(input);
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/* determine the size of the input's buffer */
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len = (int32_t)(input->str.fLimit - input->str.fPos);
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/* truncate to the width, if specified */
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if(info->fWidth != -1)
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len = ufmt_min(len, info->fWidth);
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/* get the formatter */
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format = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_DECIMAL);
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/* handle error */
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if(format == 0)
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return 0;
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/* Skip the positive prefix. ICU normally can't handle this due to strict parsing. */
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skipped += u_scanf_skip_leading_positive_sign(input, format, &status);
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/* parse the number */
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num = unum_parseDouble(format, input->str.fPos, len, &parsePos, &status);
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if (!info->fSkipArg) {
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if (info->fIsLong)
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*(double*)(args[0].ptrValue) = num;
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else if (info->fIsLongDouble)
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*(long double*)(args[0].ptrValue) = num;
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else
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*(float*)(args[0].ptrValue) = (float)num;
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}
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/* mask off any necessary bits */
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/* if(! info->fIsLong_double)
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num &= DBL_MAX;*/
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/* update the input's position to reflect consumed data */
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input->str.fPos += parsePos;
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/* we converted 1 arg */
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*argConverted = !info->fSkipArg;
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return parsePos + skipped;
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}
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#define UPRINTF_SYMBOL_BUFFER_SIZE 8
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static int32_t
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u_scanf_scientific_handler(UFILE *input,
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u_scanf_spec_info *info,
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ufmt_args *args,
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const UChar *fmt,
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int32_t *fmtConsumed,
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int32_t *argConverted)
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{
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int32_t len;
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double num;
|
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UNumberFormat *format;
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int32_t parsePos = 0;
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int32_t skipped;
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UErrorCode status = U_ZERO_ERROR;
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UChar srcExpBuf[UPRINTF_SYMBOL_BUFFER_SIZE];
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int32_t srcLen, expLen;
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UChar expBuf[UPRINTF_SYMBOL_BUFFER_SIZE];
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|
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/* skip all ws in the input */
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skipped = u_scanf_skip_leading_ws(input, info->fPadChar);
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/* fill the input's internal buffer */
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ufile_fill_uchar_buffer(input);
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|
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/* determine the size of the input's buffer */
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len = (int32_t)(input->str.fLimit - input->str.fPos);
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|
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/* truncate to the width, if specified */
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if(info->fWidth != -1)
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len = ufmt_min(len, info->fWidth);
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/* get the formatter */
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format = u_locbund_getNumberFormat(&input->str.fBundle, UNUM_SCIENTIFIC);
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|
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/* handle error */
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if(format == 0)
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return 0;
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|
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/* set the appropriate flags on the formatter */
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|
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srcLen = unum_getSymbol(format,
|
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UNUM_EXPONENTIAL_SYMBOL,
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srcExpBuf,
|
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sizeof(srcExpBuf),
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&status);
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|
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/* Upper/lower case the e */
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|
if (info->fSpec == (UChar)0x65 /* e */) {
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expLen = u_strToLower(expBuf, (int32_t)sizeof(expBuf),
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srcExpBuf, srcLen,
|
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input->str.fBundle.fLocale,
|
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&status);
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}
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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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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)
|
|
{
|
|
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;
|
|
/* fall through to next case */
|
|
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 */
|