diff options
Diffstat (limited to 'stdio-common/vfscanf.c')
| -rw-r--r-- | stdio-common/vfscanf.c | 150 |
1 files changed, 135 insertions, 15 deletions
diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c index b50e7b8..6b95352 100644 --- a/stdio-common/vfscanf.c +++ b/stdio-common/vfscanf.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1991,92,93,94,95,96,97,98,99 Free Software Foundation, Inc. +/* Copyright (C) 1991-1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -62,6 +62,7 @@ #define GROUP 0x080 /* ': group numbers */ #define MALLOC 0x100 /* a: malloc strings */ #define CHAR 0x200 /* hh: char */ +#define I18N 0x400 /* I: use locale's digits */ #ifdef USE_IN_LIBIO @@ -479,8 +480,9 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } } - /* Check for the assignment-suppressing and the number grouping flag. */ - while (*f == L_('*') || *f == L_('\'')) + /* Check for the assignment-suppressing, the number grouping flag, + and the signal to use the locale's digit representation. */ + while (*f == L_('*') || *f == L_('\'') || *f == L_('I')) switch (*f++) { case L_('*'): @@ -489,6 +491,9 @@ __vfscanf (FILE *s, const char *format, va_list argptr) case L_('\''): flags |= GROUP; break; + case L_('I'): + flags |= I18N; + break; } /* We have seen width. */ @@ -1192,22 +1197,137 @@ __vfscanf (FILE *s, const char *format, va_list argptr) if (base == 0) base = 10; - /* Read the number into workspace. */ - while (c != EOF && width != 0) + if (base == 10 && (flags & I18N) != 0) { - if (base == 16 ? !ISXDIGIT (c) : - ((!ISDIGIT (c) || c - L_('0') >= base) && - !((flags & GROUP) && base == 10 && c == thousands))) - break; - ADDW (c); - if (width > 0) - --width; + int from_level; + int to_level; +#ifdef COMPILE_WPRINTF + const wchar_t *wcdigits; +#else + const char *mbdigits[10]; +#endif + int n; - c = inchar (); + from_level = 0; +#ifdef COMPILE_WPRINTF + to_level = _NL_CURRENT_WORD (LC_CTYPE, + _NL_CTYPE_INDIGITS_WC_LEN) - 1; +#else + to_level = _NL_CURRENT_WORD (LC_CTYPE, + _NL_CTYPE_INDIGITS_MB_LEN) - 1; +#endif + + /* In this round we get the pointer to the digit strings + and also perform the first round of comparisons. */ + for (n = 0; n < 10; ++n) + { + size_t dlen; + size_t dcnt; + + /* Get the string for the digits with value N. */ +#ifdef COMPILE_WPRINTF + wcdigits[n] = _NL_CURRENT (LC_CTYPE, + _NL_CTYPE_INDIGITS0_WC + n); + if (c == *wcdigit[n]) + break; + + /* Advance the pointer to the next string. */ + ++wcdigits[n]; +#else + mbdigits[n] = _NL_CURRENT (LC_CTYPE, + _NL_CTYPE_INDIGITS0_MB + n); + dlen = strlen (mbdigits[n]); + + dcnt = 0; + do + { + if (c != mbdigits[n][dcnt]) + break; + c = inchar (); + } + while (--dcnt > 0); + + if (dcnt == 0) + /* We found it. */ + break; + + /* Advance the pointer to the next string. */ + mbdigits[n] += dlen + 1; + } +#endif + + if (n == 10) + { + /*Have not yet found the digit. */ + while (++from_level <= to_level) + { + /* Search all ten digits of this level. */ + for (n = 0; n < 10; ++n) + { +#ifdef COMPILE_WPRINTF + if (c == *wcdigit[n]) + break; + + /* Advance the pointer to the next string. */ + ++wcdigits[n]; +#else + size_t dlen = strlen (mbdigits[n]); + size_t dcnt; + + dcnt = 0; + do + { + if (c != mbdigits[n][dcnt]) + break; + c = inchar (); + } + while (--dcnt > 0); + + if (dcnt == 0) + /* We found it. */ + break; + + /* Advance the pointer to the next string. */ + mbdigits[n] += dlen + 1; +#endif + } + + if (n < 10) + /* Found it. */ + break; + + /* Next level. */ + ++from_level; + } + } + + if (n == 10) + { + /* Haven't found anything. Push the last character back + and return an error. */ + ungetc (c, s); + input_error (); + } + + ADDW (L_('0') + n); } + else + /* Read the number into workspace. */ + while (c != EOF && width != 0) + { + if (base == 16 ? !ISXDIGIT (c) : + ((!ISDIGIT (c) || c - L_('0') >= base) && + !((flags & GROUP) && base == 10 && c == thousands))) + break; + ADDW (c); + if (width > 0) + --width; + + c = inchar (); + } - if (wpsize == 0 || - (wpsize == 1 && (wp[0] == L_('+') || wp[0] == L_('-')))) + if (wpsize == 0 + || (wpsize == 1 && (wp[0] == L_('+') || wp[0] == L_('-')))) { /* There was no number. If we are supposed to read a pointer we must recognize "(nil)" as well. */ |