diff options
Diffstat (limited to 'stdio-common/vfscanf.c')
| -rw-r--r-- | stdio-common/vfscanf.c | 1313 |
1 files changed, 990 insertions, 323 deletions
diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c index 0339edbeca..5caf616be3 100644 --- a/stdio-common/vfscanf.c +++ b/stdio-common/vfscanf.c @@ -16,6 +16,7 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <assert.h> #include <errno.h> #include <limits.h> #include <ctype.h> @@ -69,13 +70,56 @@ # undef va_list # define va_list _IO_va_list -# define ungetc(c, s) ((void) ((int) c == EOF \ + +# ifdef COMPILE_WPRINTF +# define ungetc(c, s) ((void) ((int) c == WEOF \ + || (--read_in, \ + _IO_sputbackwc (s, (unsigned char) c)))) +# define inchar() (c == EOF ? EOF \ + : ((c = _IO_getwc_unlocked (s)), \ + (void) (c != EOF && ++read_in), c)) + +# define MEMCPY(d, s, n) wmemcpy (d, s, n) +# define ISSPACE(Ch) iswspace (Ch) +# define ISDIGIT(Ch) iswdigit (Ch) +# define ISXDIGIT(Ch) iswxdigit (Ch) +# define UNGETC(Ch, S) ungetwc (Ch, S) +# define TOLOWER(Ch) towlower (Ch) +# define ORIENT if (_IO_fwide (s, 1) != 1) return EOF +# define __strtoll_internal __wcstoll_internal +# define __strtoull_internal __wcstoull_internal +# define __strtol_internal __wcstol_internal +# define __strtoul_internal __wcstoul_internal +# define __strtold_internal __wcstold_internal +# define __strtod_internal __wcstod_internal +# define __strtof_internal __wcstof_internal + +# define L_(Str) L##Str +# define CHAR_T wchar_t +# define UCHAR_T unsigned int +# define WINT_T wint_t +# else +# define ungetc(c, s) ((void) ((int) c == EOF \ || (--read_in, \ _IO_sputbackc (s, (unsigned char) c)))) -# define inchar() (c == EOF ? EOF \ +# define inchar() (c == EOF ? EOF \ : ((c = _IO_getc_unlocked (s)), \ (void) (c != EOF && ++read_in), c)) -# define encode_error() do { \ +# define MEMCPY(d, s, n) memcpy (d, s, n) +# define ISSPACE(Ch) isspace (Ch) +# define ISDIGIT(Ch) isdigit (Ch) +# define ISXDIGIT(Ch) isxdigit (Ch) +# define UNGETC(Ch, S) ungetc (Ch, S) +# define TOLOWER(Ch) tolower (Ch) +# define ORIENT if (_IO_fwide (s, -1) != -1) return EOF + +# define L_(Str) Str +# define CHAR_T char +# define UCHAR_T unsigned char +# define WINT_T int +# endif + +# define encode_error() do { \ if (errp != NULL) *errp |= 4; \ _IO_funlockfile (s); \ __libc_cleanup_end (0); \ @@ -94,7 +138,7 @@ __libc_cleanup_end (0); \ return done ?: EOF; \ } while (0) -# define memory_error() do { \ +# define memory_error() do { \ _IO_funlockfile (s); \ __set_errno (ENOMEM); \ __libc_cleanup_end (0); \ @@ -180,30 +224,39 @@ FORMAT, using the argument list in ARG. Return the number of assignments made, or -1 for an input error. */ #ifdef USE_IN_LIBIO +# ifdef COMPILE_WPRINTF +int +_IO_vfwscanf (s, format, argptr, errp) + _IO_FILE *s; + const wchar_t *format; + _IO_va_list argptr; + int *errp; +# else int _IO_vfscanf (s, format, argptr, errp) _IO_FILE *s; const char *format; _IO_va_list argptr; int *errp; +# endif #else int __vfscanf (FILE *s, const char *format, va_list argptr) #endif { va_list arg; - register const char *f = format; - register unsigned char fc; /* Current character of the format. */ + register const CHAR_T *f = format; + register UCHAR_T fc; /* Current character of the format. */ register size_t done = 0; /* Assignments done. */ register size_t read_in = 0; /* Chars read in. */ - register int c = 0; /* Last char read. */ + register WINT_T c = 0; /* Last char read. */ register int width; /* Maximum field width. */ register int flags; /* Modifiers for current format element. */ /* Status for reading F-P nums. */ char got_dot, got_e, negative; /* If a [...] is a [^...]. */ - char not_in; + CHAR_T not_in; #define exp_char not_in /* Base for integral numbers. */ int base; @@ -236,8 +289,8 @@ __vfscanf (FILE *s, const char *format, va_list argptr) /* Nonzero if we are reading a pointer. */ int read_pointer; /* Workspace. */ - char *tw; /* Temporary pointer. */ - char *wp = NULL; /* Workspace. */ + CHAR_T *tw; /* Temporary pointer. */ + CHAR_T *wp = NULL; /* Workspace. */ size_t wpmax = 0; /* Maximal size of workspace. */ size_t wpsize; /* Currently used bytes in workspace. */ #define ADDW(Ch) \ @@ -245,11 +298,11 @@ __vfscanf (FILE *s, const char *format, va_list argptr) { \ if (wpsize == wpmax) \ { \ - char *old = wp; \ + CHAR_T *old = wp; \ wpmax = UCHAR_MAX > 2 * wpmax ? UCHAR_MAX : 2 * wpmax; \ - wp = (char *) alloca (wpmax); \ + wp = (CHAR_T *) alloca (wpmax * sizeof (wchar_t)); \ if (old != NULL) \ - memcpy (wp, old, wpsize); \ + MEMCPY (wp, old, wpsize); \ } \ wp[wpsize++] = (Ch); \ } \ @@ -261,6 +314,10 @@ __vfscanf (FILE *s, const char *format, va_list argptr) arg = (va_list) argptr; #endif +#ifdef ORIENT + ORIENT; +#endif + ARGCHECK (s, format); /* Figure out the decimal point character. */ @@ -280,8 +337,10 @@ __vfscanf (FILE *s, const char *format, va_list argptr) LOCK_STREAM (s); +#ifndef COMPILE_WPRINTF /* From now on we use `state' to convert the format string. */ memset (&state, '\0', sizeof (state)); +#endif /* Run through the format string. */ while (*f != '\0') @@ -320,6 +379,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) # endif #endif +#ifndef COMPILE_WPRINTF if (!isascii (*f)) { /* Non-ASCII, may be a multibyte. */ @@ -341,12 +401,13 @@ __vfscanf (FILE *s, const char *format, va_list argptr) continue; } } +#endif fc = *f++; if (fc != '%') { /* Remember to skip spaces. */ - if (isspace (fc)) + if (ISSPACE (fc)) { skip_space = 1; continue; @@ -363,7 +424,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) string. Now it's time to skip all leading white space. */ if (skip_space) { - while (isspace (c)) + while (ISSPACE (c)) if (inchar () == EOF && errno == EINTR) conv_error (); skip_space = 0; @@ -371,7 +432,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) if (c != fc) { - ungetc (c, s); + UNGETC (c, s); conv_error (); } @@ -391,12 +452,12 @@ __vfscanf (FILE *s, const char *format, va_list argptr) wpsize = 0; /* Check for a positional parameter specification. */ - if (isdigit (*f)) + if (ISDIGIT (*f)) { - argpos = *f++ - '0'; - while (isdigit (*f)) - argpos = argpos * 10 + (*f++ - '0'); - if (*f == '$') + argpos = *f++ - L_('0'); + while (ISDIGIT (*f)) + argpos = argpos * 10 + (*f++ - L_('0')); + if (*f == L_('$')) ++f; else { @@ -409,27 +470,27 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } /* Check for the assignment-suppressing and the number grouping flag. */ - while (*f == '*' || *f == '\'') + while (*f == L_('*') || *f == L_('\'')) switch (*f++) { - case '*': + case L_('*'): flags |= SUPPRESS; break; - case '\'': + case L_('\''): flags |= GROUP; break; } /* We have seen width. */ - if (isdigit (*f)) + if (ISDIGIT (*f)) flags |= WIDTH; /* Find the maximum field width. */ width = 0; - while (isdigit (*f)) + while (ISDIGIT (*f)) { width *= 10; - width += *f++ - '0'; + width += *f++ - L_('0'); } got_width: if (width == 0) @@ -438,9 +499,9 @@ __vfscanf (FILE *s, const char *format, va_list argptr) /* Check for type modifiers. */ switch (*f++) { - case 'h': + case L_('h'): /* ints are short ints or chars. */ - if (*f == 'h') + if (*f == L_('h')) { ++f; flags |= CHAR; @@ -448,8 +509,8 @@ __vfscanf (FILE *s, const char *format, va_list argptr) else flags |= SHORT; break; - case 'l': - if (*f == 'l') + case L_('l'): + if (*f == L_('l')) { /* A double `l' is equivalent to an `L'. */ ++f; @@ -459,15 +520,15 @@ __vfscanf (FILE *s, const char *format, va_list argptr) /* ints are long ints. */ flags |= LONG; break; - case 'q': - case 'L': + case L_('q'): + case L_('L'): /* doubles are long doubles, and ints are long long ints. */ flags |= LONGDBL | LONG; break; - case 'a': + case L_('a'): /* The `a' is used as a flag only if followed by `s', `S' or `['. */ - if (*f != 's' && *f != 'S' && *f != '[') + if (*f != L_('s') && *f != L_('S') && *f != L_('[')) { --f; break; @@ -476,19 +537,19 @@ __vfscanf (FILE *s, const char *format, va_list argptr) arg and fill it in with a malloc'd pointer. */ flags |= MALLOC; break; - case 'z': + case L_('z'): if (need_longlong && sizeof (size_t) > sizeof (unsigned long int)) flags |= LONGDBL; else if (sizeof (size_t) > sizeof (unsigned int)) flags |= LONG; break; - case 'j': + case L_('j'): if (need_longlong && sizeof (uintmax_t) > sizeof (unsigned long int)) flags |= LONGDBL; else if (sizeof (uintmax_t) > sizeof (unsigned int)) flags |= LONG; break; - case 't': + case L_('t'): if (need_longlong && sizeof (ptrdiff_t) > sizeof (long int)) flags |= LONGDBL; else if (sizeof (ptrdiff_t) > sizeof (int)) @@ -501,12 +562,13 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } /* End of the format string? */ - if (*f == '\0') + if (*f == L_('\0')) conv_error (); /* Find the conversion specifier. */ fc = *f++; - if (skip_space || (fc != '[' && fc != 'c' && fc != 'C' && fc != 'n')) + if (skip_space || (fc != L_('[') && fc != L_('c') + && fc != L_('C') && fc != L_('n'))) { /* Eat whitespace. */ int save_errno = errno; @@ -514,15 +576,15 @@ __vfscanf (FILE *s, const char *format, va_list argptr) do if (inchar () == EOF && errno == EINTR) input_error (); - while (isspace (c)); + while (ISSPACE (c)); errno = save_errno; - ungetc (c, s); + UNGETC (c, s); skip_space = 0; } switch (fc) { - case '%': /* Must match a literal '%'. */ + case L_('%'): /* Must match a literal '%'. */ c = inchar (); if (c == EOF) input_error (); @@ -533,7 +595,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } break; - case 'n': /* Answer number of assignments done. */ + case L_('n'): /* Answer number of assignments done. */ /* Corrigendum 1 to ISO C 1990 describes the allowed flags with the 'n' conversion specifier. */ if (!(flags & SUPPRESS)) @@ -581,7 +643,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } break; - case 'c': /* Match characters. */ + case L_('c'): /* Match characters. */ if ((flags & LONG) == 0) { if (!(flags & SUPPRESS)) @@ -598,6 +660,26 @@ __vfscanf (FILE *s, const char *format, va_list argptr) if (width == -1) width = 1; +#ifdef COMPILE_WPRINTF + /* We have to convert the wide character(s) into multibyte + characters and store the result. */ + memset (&state, '\0', sizeof (state)); + + do + { + size_t n; + + n = wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); + if (n == (size_t) -1) + /* No valid wide character. */ + input_error (); + + /* Increment the output pointer. Even if we don't + write anything. */ + str += n; + } + while (--width > 0 && inchar () != EOF); +#else if (!(flags & SUPPRESS)) { do @@ -606,6 +688,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } else while (--width > 0 && inchar () != EOF); +#endif if (!(flags & SUPPRESS)) ++done; @@ -613,238 +696,448 @@ __vfscanf (FILE *s, const char *format, va_list argptr) break; } /* FALLTHROUGH */ - case 'C': - /* Get UTF-8 encoded wide character. Here we assume (as in - other parts of the libc) that we only have to handle - UTF-8. */ + case L_('C'): + if (!(flags & SUPPRESS)) + { + wstr = ARG (wchar_t *); + if (str == NULL) + conv_error (); + } + + c = inchar (); + if (c == EOF) + input_error (); + +#ifdef COMPILE_WPRINTF + /* Just store the incoming wide characters. */ + if (!(flags & SUPPRESS)) + { + do + *wstr++ = c; + while (--width > 0 && inchar () != EOF); + } + else + while (--width > 0 && inchar () != EOF); +#else { - wint_t val; - size_t cnt = 0; - int first = 1; + /* We have to convert the multibyte input sequence to wide + characters. */ + char buf[MB_LEN_MAX]; + mbstate_t cstate; - if (!(flags & SUPPRESS)) - { - wstr = ARG (wchar_t *); - if (str == NULL) - conv_error (); - } + memset (&cstate, '\0', sizeof (cstate)); do { -#define NEXT_WIDE_CHAR(First) \ - c = inchar (); \ - if (c == EOF) \ - { \ - /* EOF is only an error for the first character. */ \ - if (First) \ - input_error (); \ - else \ - break; \ - } \ - val = c; \ - if (val >= 0x80) \ - { \ - if ((c & 0xc0) == 0x80 || (c & 0xfe) == 0xfe) \ - encode_error (); \ - if ((c & 0xe0) == 0xc0) \ - { \ - /* We expect two bytes. */ \ - cnt = 1; \ - val &= 0x1f; \ - } \ - else if ((c & 0xf0) == 0xe0) \ - { \ - /* We expect three bytes. */ \ - cnt = 2; \ - val &= 0x0f; \ - } \ - else if ((c & 0xf8) == 0xf0) \ - { \ - /* We expect four bytes. */ \ - cnt = 3; \ - val &= 0x07; \ - } \ - else if ((c & 0xfc) == 0xf8) \ - { \ - /* We expect five bytes. */ \ - cnt = 4; \ - val &= 0x03; \ - } \ - else \ - { \ - /* We expect six bytes. */ \ - cnt = 5; \ - val &= 0x01; \ - } \ - \ - do \ - { \ - c = inchar (); \ - if (c == EOF \ - || (c & 0xc0) == 0x80 || (c & 0xfe) == 0xfe) \ - encode_error (); \ - val <<= 6; \ - val |= c & 0x3f; \ - } \ - while (--cnt > 0); \ - } \ - \ - if (!(flags & SUPPRESS)) \ - *wstr++ = val; \ - First = 0 - - NEXT_WIDE_CHAR (first); - } - while (--width > 0); + size_t cnt; - if (!(flags & SUPPRESS)) - ++done; + /* This is what we present the mbrtowc function first. */ + buf[0] = c; + cnt = 1; + + while (1) + { + size_t n; + + n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, + buf, cnt, &cstate); + + if (n == (size_t) -2) + { + /* Possibly correct character, just not enough + input. */ + assert (cnt < MB_CUR_MAX); + + if (inchar () == EOF) + encode_error (); + + buf[cnt++] = c; + continue; + } + + if (n != cnt) + encode_error (); + + /* We have a match. */ + break; + } + + /* Advance the result pointer. */ + ++wstr; + } + while (--width > 0 && inchar () != EOF); } - break; +#endif - case 's': /* Read a string. */ - if (flags & LONG) - /* We have to process a wide character string. */ - goto wide_char_string; + if (!(flags & SUPPRESS)) + ++done; + break; + + case L_('s'): /* Read a string. */ + if (!(flags & LONG)) + { #define STRING_ARG(Str, Type) \ - if (!(flags & SUPPRESS)) \ - { \ - if (flags & MALLOC) \ + do if (!(flags & SUPPRESS)) \ { \ - /* The string is to be stored in a malloc'd buffer. */ \ - strptr = ARG (char **); \ - if (strptr == NULL) \ + if (flags & MALLOC) \ + { \ + /* The string is to be stored in a malloc'd buffer. */ \ + strptr = ARG (char **); \ + if (strptr == NULL) \ + conv_error (); \ + /* Allocate an initial buffer. */ \ + strsize = 100; \ + *strptr = (char *) malloc (strsize * sizeof (Type)); \ + Str = (Type *) *strptr; \ + } \ + else \ + Str = ARG (Type *); \ + if (Str == NULL) \ conv_error (); \ - /* Allocate an initial buffer. */ \ - strsize = 100; \ - *strptr = malloc (strsize * sizeof (Type)); \ - Str = (Type *) *strptr; \ - } \ - else \ - Str = ARG (Type *); \ - if (Str == NULL) \ - conv_error (); \ - } - STRING_ARG (str, char); + } while (0) + STRING_ARG (str, char); - c = inchar (); - if (c == EOF) - input_error (); + c = inchar (); + if (c == EOF) + input_error (); - do - { - if (isspace (c)) +#ifdef COMPILE_WPRINTF + memset (&state, '\0', sizeof (state)); +#endif + + do { - ungetc (c, s); - break; - } -#define STRING_ADD_CHAR(Str, c, Type) \ - if (!(flags & SUPPRESS)) \ - { \ - *Str++ = c; \ - if ((flags & MALLOC) && (char *) Str == *strptr + strsize) \ - { \ - /* Enlarge the buffer. */ \ - Str = realloc (*strptr, strsize * 2 * sizeof (Type)); \ - if (Str == NULL) \ - { \ - /* Can't allocate that much. Last-ditch effort. */\ - Str = realloc (*strptr, \ - (strsize + 1) * sizeof (Type)); \ - if (Str == NULL) \ - { \ - /* We lose. Oh well. \ - Terminate the string and stop converting, \ - so at least we don't skip any input. */ \ - ((Type *) (*strptr))[strsize] = '\0'; \ - ++done; \ - conv_error (); \ - } \ - else \ - { \ - *strptr = (char *) Str; \ - Str = ((Type *) *strptr) + strsize; \ - ++strsize; \ - } \ - } \ - else \ - { \ - *strptr = (char *) Str; \ - Str = ((Type *) *strptr) + strsize; \ - strsize *= 2; \ - } \ - } \ + if (ISSPACE (c)) + { + UNGETC (c, s); + break; + } + +#ifdef COMPILE_WPRINTF + /* This is quite complicated. We have to convert the + wide characters into multibyte characters and then + store them. */ + { + size_t n; + + if (!(flags & SUPPRESS) && (flags & MALLOC) + && str + MB_CUR_MAX >= *strptr + strsize) + { + /* We have to enlarge the buffer if the `a' flag + was given. */ + str = (char *) realloc (*strptr, strsize * 2); + if (str == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + str = (char *) realloc (*strptr, strsize + 1); + if (str == NULL) + { + /* We lose. Oh well. Terminate the + string and stop converting, + so at least we don't skip any input. */ + ((char *) (*strptr))[strsize - 1] = '\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) str; + str += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) str; + str += strsize; + strsize *= 2; + } + } + + n = wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); + if (n == (size_t) -1) + encode_error (); + + assert (n <= MB_CUR_MAX); + str += n; + } +#else + /* This is easy. */ + if (!(flags & SUPPRESS)) + { + *str++ = c; + if ((flags & MALLOC) + && (char *) str == *strptr + strsize) + { + /* Enlarge the buffer. */ + str = (char *) realloc (*strptr, 2 * strsize); + if (str == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + str = (char *) realloc (*strptr, strsize + 1); + if (str == NULL) + { + /* We lose. Oh well. Terminate the + string and stop converting, + so at least we don't skip any input. */ + ((char *) (*strptr))[strsize - 1] = '\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) str; + str += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) str; + str += strsize; + strsize *= 2; + } + } + } +#endif } - STRING_ADD_CHAR (str, c, char); - } while ((width <= 0 || --width > 0) && inchar () != EOF); + while ((width <= 0 || --width > 0) && inchar () != EOF); - if (!(flags & SUPPRESS)) - { - *str = '\0'; - ++done; + if (!(flags & SUPPRESS)) + { +#ifdef COMPILE_WPRINTF + /* We have to emit the code to get into the intial + state. */ + char buf[MB_LEN_MAX]; + size_t n = wcrtomb (buf, L'\0', &state); + if (n > 0 && (flags & MALLOC) + && str + n >= *strptr + strsize) + { + /* Enlarge the buffer. */ + str = (char *) realloc (*strptr, + (str + n + 1) - *strptr); + if (str == NULL) + { + /* We lose. Oh well. Terminate the string + and stop converting, so at least we don't + skip any input. */ + ((char *) (*strptr))[strsize - 1] = '\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) str; + str = ((char *) *strptr) + strsize; + strsize = (str + n + 1) - *strptr; + } + } + + str = __mempcpy (str, buf, n); +#endif + *str = '\0'; + + if ((flags & MALLOC) && str - *strptr != strsize) + { + char *cp = (char *) realloc (*strptr, str - *strptr); + if (cp != NULL) + *strptr = cp; + } + + ++done; + } + break; } - break; + /* FALLTHROUGH */ - case 'S': - /* Wide character string. */ - wide_char_string: + case L_('S'): { - wint_t val; - int first = 1; +#ifndef COMPILE_WPRINTF + mbstate_t cstate; +#endif + + /* Wide character string. */ STRING_ARG (wstr, wchar_t); + c = inchar (); + if (c == EOF) + input_error (); + +#ifndef COMPILE_WPRINTF + memset (&cstate, '\0', sizeof (cstate)); +#endif + do { - size_t cnt = 0; - NEXT_WIDE_CHAR (first); - - if (__iswspace (val)) + if (ISSPACE (c)) { - /* XXX We would have to push back the whole wide char - with possibly many bytes. But since scanf does - not make a difference for white space characters - we can simply push back a simple <SP> which is - guaranteed to be in the [:space:] class. */ - ungetc (' ', s); + UNGETC (c, s); break; } - STRING_ADD_CHAR (wstr, val, wchar_t); - first = 0; +#ifdef COMPILE_WPRINTF + /* This is easy. */ + if (!(flags & SUPPRESS)) + { + *wstr++ = c; + if ((flags & MALLOC) + && wstr == (wchar_t *) *strptr + strsize) + { + /* Enlarge the buffer. */ + wstr = (wchar_t *) realloc (*strptr, + (2 * strsize) + * sizeof (wchar_t)); + if (wstr == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + wstr = (wchar_t *) realloc (*strptr, + (strsize + + sizeof (wchar_t))); + if (wstr == NULL) + { + /* We lose. Oh well. Terminate the string + and stop converting, so at least we don't + skip any input. */ + ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize *= 2; + } + } + } +#else + { + char buf[MB_LEN_MAX]; + size_t cnt; + + buf[0] = c; + cnt = 1; + + while (1) + { + size_t n; + + n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, + buf, cnt, &cstate); + + if (n == (size_t) -2) + { + /* Possibly correct character, just not enough + input. */ + assert (cnt < MB_CUR_MAX); + + if (inchar () == EOF) + encode_error (); + + buf[cnt++] = c; + continue; + } + + if (n != cnt) + encode_error (); + + /* We have a match. */ + break; + } + + if (!(flags & SUPPRESS) && (flags & MALLOC) + && wstr == (wchar_t *) *strptr + strsize) + { + /* Enlarge the buffer. */ + wstr = (wchar_t *) realloc (*strptr, + (2 * strsize + * sizeof (wchar_t))); + if (wstr == NULL) + { + /* Can't allocate that much. Last-ditch effort. */ + wstr = (wchar_t *) realloc (*strptr, + ((strsize + 1) + * sizeof (wchar_t))); + if (wstr == NULL) + { + /* We lose. Oh well. Terminate the + string and stop converting, so at + least we don't skip any input. */ + ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize *= 2; + } + } + } +#endif } - while (width <= 0 || --width > 0); + while ((width <= 0 || --width > 0) && inchar () != EOF); if (!(flags & SUPPRESS)) { - *wstr = L'\0'; + *wstr++ = L'\0'; + + if ((flags & MALLOC) && wstr - (wchar_t *) *strptr != strsize) + { + wchar_t *cp = (wchar_t *) realloc (*strptr, + ((wstr + - (wchar_t *) *strptr) + * sizeof(wchar_t))); + if (cp != NULL) + *strptr = (char *) cp; + } + ++done; } } break; - case 'x': /* Hexadecimal integer. */ - case 'X': /* Ditto. */ + case L_('x'): /* Hexadecimal integer. */ + case L_('X'): /* Ditto. */ base = 16; number_signed = 0; goto number; - case 'o': /* Octal integer. */ + case L_('o'): /* Octal integer. */ base = 8; number_signed = 0; goto number; - case 'u': /* Unsigned decimal integer. */ + case L_('u'): /* Unsigned decimal integer. */ base = 10; number_signed = 0; goto number; - case 'd': /* Signed decimal integer. */ + case L_('d'): /* Signed decimal integer. */ base = 10; number_signed = 1; goto number; - case 'i': /* Generic number. */ + case L_('i'): /* Generic number. */ base = 0; number_signed = 1; @@ -854,7 +1147,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) input_error (); /* Check for a sign. */ - if (c == '-' || c == '+') + if (c == L_('-') || c == L_('+')) { ADDW (c); if (width > 0) @@ -863,7 +1156,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } /* Look for a leading indication of base. */ - if (width != 0 && c == '0') + if (width != 0 && c == L_('0')) { if (width > 0) --width; @@ -871,7 +1164,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) ADDW (c); c = inchar (); - if (width != 0 && _tolower (c) == 'x') + if (width != 0 && TOLOWER (c) == L_('x')) { if (base == 0) base = 16; @@ -892,8 +1185,8 @@ __vfscanf (FILE *s, const char *format, va_list argptr) /* Read the number into workspace. */ while (c != EOF && width != 0) { - if (base == 16 ? !isxdigit (c) : - ((!isdigit (c) || c - '0' >= base) && + if (base == 16 ? !ISXDIGIT (c) : + ((!ISDIGIT (c) || c - L_('0') >= base) && !((flags & GROUP) && base == 10 && c == thousands))) break; ADDW (c); @@ -904,34 +1197,34 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } if (wpsize == 0 || - (wpsize == 1 && (wp[0] == '+' || wp[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. */ if (wpsize == 0 && read_pointer && (width < 0 || width >= 0) && c == '(' - && _tolower (inchar ()) == 'n' - && _tolower (inchar ()) == 'i' - && _tolower (inchar ()) == 'l' - && inchar () == ')') + && TOLOWER (inchar ()) == L_('n') + && TOLOWER (inchar ()) == L_('i') + && TOLOWER (inchar ()) == L_('l') + && inchar () == L_(')')) /* We must produce the value of a NULL pointer. A single '0' digit is enough. */ - ADDW ('0'); + ADDW (L_('0')); else { /* The last read character is not part of the number anymore. */ - ungetc (c, s); + UNGETC (c, s); conv_error (); } } else /* The just read character is not part of the number anymore. */ - ungetc (c, s); + UNGETC (c, s); /* Convert the number. */ - ADDW ('\0'); + ADDW (L_('\0')); if (need_longlong && (flags & LONGDBL)) { if (number_signed) @@ -982,28 +1275,28 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } break; - case 'e': /* Floating-point numbers. */ - case 'E': - case 'f': - case 'g': - case 'G': - case 'a': - case 'A': + case L_('e'): /* Floating-point numbers. */ + case L_('E'): + case L_('f'): + case L_('g'): + case L_('G'): + case L_('a'): + case L_('A'): c = inchar (); if (c == EOF) input_error (); /* Check for a sign. */ - if (c == '-' || c == '+') + if (c == L_('-') || c == L_('+')) { - negative = c == '-'; + negative = c == L_('-'); if (inchar () == EOF) /* EOF is only an input error before we read any chars. */ conv_error (); - if (! isdigit (c) && c != decimal) + if (! ISDIGIT (c) && c != decimal) { /* This is no valid number. */ - ungetc (c, s); + UNGETC (c, s); input_error (); } if (width > 0) @@ -1013,69 +1306,69 @@ __vfscanf (FILE *s, const char *format, va_list argptr) negative = 0; /* Take care for the special arguments "nan" and "inf". */ - if (_tolower (c) == 'n') + if (TOLOWER (c) == L_('n')) { /* Maybe "nan". */ ADDW (c); - if (inchar () == EOF || _tolower (c) != 'a') + if (inchar () == EOF || TOLOWER (c) != L_('a')) input_error (); ADDW (c); - if (inchar () == EOF || _tolower (c) != 'n') + if (inchar () == EOF || TOLOWER (c) != L_('n')) input_error (); ADDW (c); /* It is "nan". */ goto scan_float; } - else if (_tolower (c) == 'i') + else if (TOLOWER (c) == L_('i')) { /* Maybe "inf" or "infinity". */ ADDW (c); - if (inchar () == EOF || _tolower (c) != 'n') + if (inchar () == EOF || TOLOWER (c) != L_('n')) input_error (); ADDW (c); - if (inchar () == EOF || _tolower (c) != 'f') + if (inchar () == EOF || TOLOWER (c) != L_('f')) input_error (); ADDW (c); /* It is as least "inf". */ if (inchar () != EOF) { - if (_tolower (c) == 'i') + if (TOLOWER (c) == L_('i')) { /* Now we have to read the rest as well. */ ADDW (c); - if (inchar () == EOF || _tolower (c) != 'n') + if (inchar () == EOF || TOLOWER (c) != L_('n')) input_error (); ADDW (c); - if (inchar () == EOF || _tolower (c) != 'i') + if (inchar () == EOF || TOLOWER (c) != L_('i')) input_error (); ADDW (c); - if (inchar () == EOF || _tolower (c) != 't') + if (inchar () == EOF || TOLOWER (c) != L_('t')) input_error (); ADDW (c); - if (inchar () == EOF || _tolower (c) != 'y') + if (inchar () == EOF || TOLOWER (c) != L_('y')) input_error (); ADDW (c); } else /* Never mind. */ - ungetc (c, s); + UNGETC (c, s); } goto scan_float; } is_hexa = 0; - exp_char = 'e'; - if (c == '0') + exp_char = L_('e'); + if (c == L_('0')) { ADDW (c); c = inchar (); - if (_tolower (c) == 'x') + if (TOLOWER (c) == L_('x')) { /* It is a number in hexadecimal format. */ ADDW (c); is_hexa = 1; - exp_char = 'p'; + exp_char = L_('p'); /* Grouping is not allowed. */ flags &= ~GROUP; @@ -1086,14 +1379,14 @@ __vfscanf (FILE *s, const char *format, va_list argptr) got_dot = got_e = 0; do { - if (isdigit (c)) + if (ISDIGIT (c)) ADDW (c); - else if (!got_e && is_hexa && isxdigit (c)) + else if (!got_e && is_hexa && ISXDIGIT (c)) ADDW (c); else if (got_e && wp[wpsize - 1] == exp_char - && (c == '-' || c == '+')) + && (c == L_('-') || c == L_('+'))) ADDW (c); - else if (wpsize > 0 && !got_e && _tolower (c) == exp_char) + else if (wpsize > 0 && !got_e && TOLOWER (c) == exp_char) { ADDW (exp_char); got_e = got_dot = 1; @@ -1109,7 +1402,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) { /* The last read character is not part of the number anymore. */ - ungetc (c, s); + UNGETC (c, s); break; } if (width > 0) @@ -1125,7 +1418,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) scan_float: /* Convert the number. */ - ADDW ('\0'); + ADDW (L_('\0')); if (flags & LONGDBL) { long double d = __strtold_internal (wp, &tw, flags & GROUP); @@ -1152,22 +1445,13 @@ __vfscanf (FILE *s, const char *format, va_list argptr) ++done; break; - case '[': /* Character class. */ + case L_('['): /* Character class. */ if (flags & LONG) - { - STRING_ARG (wstr, wchar_t); - c = '\0'; /* This is to keep gcc quiet. */ - } + STRING_ARG (wstr, wchar_t); else - { - STRING_ARG (str, char); + STRING_ARG (str, char); - c = inchar (); - if (c == EOF) - input_error (); - } - - if (*f == '^') + if (*f == L_('^')) { ++f; not_in = 1; @@ -1175,6 +1459,29 @@ __vfscanf (FILE *s, const char *format, va_list argptr) else not_in = 0; + if (width < 0) + /* There is no width given so there is also no limit on the + number of characters we read. Therefore we set width to + a very high value to make the algorithm easier. */ + width = INT_MAX; + +#ifdef COMPILE_WPRINTF + /* Find the beginning and the end of the scanlist. We are not + creating a lookup table since it would have to be too large. + Instead we search each time through the string. This is not + a constant lookup time but who uses this feature deserves to + be punished. */ + tw = (wchar_t *) f; /* Marks the beginning. */ + + if (*f == ']' || *f == '-') + ++f; + + while ((fc = *f++) != L'\0' && fc != L']'); + + if (fc == L'\0') + conv_error (); + wp = (wchar_t *) f - 1; +#else /* Fill WP with byte flags indexed by character. We will use this flag map for matching input characters. */ if (wpmax < UCHAR_MAX) @@ -1182,7 +1489,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) wpmax = UCHAR_MAX; wp = (char *) alloca (wpmax); } - memset (wp, 0, UCHAR_MAX); + memset (wp, '\0', UCHAR_MAX); fc = *f; if (fc == ']' || fc == '-') @@ -1194,85 +1501,433 @@ __vfscanf (FILE *s, const char *format, va_list argptr) ++f; } + tw = (char *) f; while ((fc = *f++) != '\0' && fc != ']') - { - if (fc == '-' && *f != '\0' && *f != ']' && - (unsigned char) f[-2] <= (unsigned char) *f) - { - /* Add all characters from the one before the '-' - up to (but not including) the next format char. */ - for (fc = f[-2]; fc < *f; ++fc) - wp[fc] = 1; - } - else - /* Add the character to the flag map. */ - wp[fc] = 1; - } + if (fc == '-' && *f != '\0' && *f != ']' && f - 2 != tw + && (unsigned char) f[-2] <= (unsigned char) *f) + { + /* Add all characters from the one before the '-' + up to (but not including) the next format char. */ + for (fc = f[-2]; fc < *f; ++fc) + wp[fc] = 1; + } + else + /* Add the character to the flag map. */ + wp[fc] = 1; + if (fc == '\0') - { - if (!(flags & LONG)) - ungetc (c, s); - conv_error(); - } + conv_error(); +#endif if (flags & LONG) { - wint_t val; - int first = 1; + size_t now = read_in; +#ifdef COMPILE_WPRINTF + do + { + wchar_t *runp; + + if (inchar () == WEOF) + break; + + /* Test whether it's in the scanlist. */ + runp = tw; + while (runp < wp) + { + if (runp[0] == L'-' && runp[1] != '\0' && runp[1] != ']' + && runp != tw + && (unsigned int) runp[-1] <= (unsigned int) runp[1]) + { + /* Match against all characters in between the + first and last character of the sequence. */ + wchar_t wc; + + for (wc = runp[-1] + 1; wc < runp[1]; ++wc) + if (wc == c) + break; + + if (wc == runp[1] && !not_in) + break; + if (wc == runp[1] && not_in) + { + /* The current character is not in the + scanset. */ + ungetwc (c, s); + goto out; + } + } + else + { + if (*runp == runp[1] && !not_in) + break; + if (*runp != runp[1] && not_in) + { + ungetwc (c ,s); + goto out; + } + } + + ++runp; + } + + if (!(flags & SUPPRESS)) + { + *wstr++ = c; + + if ((flags & MALLOC) + && wstr == (wchar_t *) *strptr + strsize) + { + /* Enlarge the buffer. */ + wstr = (wchar_t *) realloc (*strptr, + (2 * strsize) + * sizeof (wchar_t)); + if (wstr == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + wstr = (wchar_t *) + realloc (*strptr, (strsize + + sizeof (wchar_t))); + if (wstr == NULL) + { + /* We lose. Oh well. Terminate the string + and stop converting, so at least we don't + skip any input. */ + ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize *= 2; + } + } + } + } + while (--width > 0); + out: +#else + char buf[MB_LEN_MAX]; + size_t cnt = 0; + mbstate_t cstate; + + memset (&cstate, '\0', sizeof (cstate)); do { - size_t cnt = 0; - NEXT_WIDE_CHAR (first); - if (val <= 255 && wp[val] == not_in) + again: + if (inchar () == EOF) + break; + + if (wp[c] == not_in) { - ungetc (val, s); + ungetc (c, s); break; } - STRING_ADD_CHAR (wstr, val, wchar_t); - if (width > 0) - --width; - first = 0; + + /* This is easy. */ + if (!(flags & SUPPRESS)) + { + size_t n; + + /* Convert it into a wide character. */ + n = __mbrtowc (wstr, buf, cnt, &cstate); + + if (n == (size_t) -2) + { + /* Possibly correct character, just not enough + input. */ + assert (cnt < MB_CUR_MAX); + goto again; + } + + if (n != cnt) + encode_error (); + + ++wstr; + if ((flags & MALLOC) + && wstr == (wchar_t *) *strptr + strsize) + { + /* Enlarge the buffer. */ + wstr = (wchar_t *) realloc (*strptr, + (2 * strsize + * sizeof (wchar_t))); + if (wstr == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + wstr = (wchar_t *) + realloc (*strptr, ((strsize + 1) + * sizeof (wchar_t))); + if (wstr == NULL) + { + /* We lose. Oh well. Terminate the + string and stop converting, + so at least we don't skip any input. */ + ((wchar_t *) (*strptr))[strsize - 1] = L'\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize *= 2; + } + } + } } - while (width != 0); + while (--width > 0); + + if (cnt != 0) + /* We stopped in the middle of recognizing another + character. That's a problem. */ + encode_error (); +#endif - if (first) + if (now == read_in) + /* We haven't succesfully read any character. */ conv_error (); if (!(flags & SUPPRESS)) { - *wstr = L'\0'; + *wstr++ = L'\0'; + + if ((flags & MALLOC) + && wstr - (wchar_t *) *strptr != strsize) + { + wchar_t *cp = (wchar_t *) + realloc (*strptr, ((wstr - (wchar_t *) *strptr) + * sizeof(wchar_t))); + if (cp != NULL) + *strptr = (char *) cp; + } + ++done; } } else { - num.ul = read_in - 1; /* -1 because we already read one char. */ + size_t now = read_in; +#ifdef COMPILE_WPRINTF + + memset (&state, '\0', sizeof (state)); + + do + { + wchar_t *runp; + size_t n; + + if (inchar () == WEOF) + break; + + /* Test whether it's in the scanlist. */ + runp = tw; + while (runp < wp) + { + if (runp[0] == L'-' && runp[1] != '\0' && runp[1] != ']' + && runp != tw + && (unsigned int) runp[-1] <= (unsigned int) runp[1]) + { + /* Match against all characters in between the + first and last character of the sequence. */ + wchar_t wc; + + for (wc = runp[-1] + 1; wc < runp[1]; ++wc) + if (wc == c) + break; + + if (wc == runp[1] && !not_in) + break; + if (wc == runp[1] && not_in) + { + /* The current character is not in the + scanset. */ + ungetwc (c, s); + goto out2; + } + } + else + { + if (*runp == runp[1] && !not_in) + break; + if (*runp != runp[1] && not_in) + { + ungetwc (c ,s); + goto out2; + } + } + + ++runp; + } + + if (!(flags & SUPPRESS)) + { + if ((flags & MALLOC) + && str + MB_CUR_MAX >= *strptr + strsize) + { + /* Enlarge the buffer. */ + str = (char *) realloc (*strptr, 2 * strsize); + if (str == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + str = (char *) realloc (*strptr, strsize + 1); + if (str == NULL) + { + /* We lose. Oh well. Terminate the string + and stop converting, so at least we don't + skip any input. */ + (*strptr)[strsize - 1] = '\0'; + ++done; + conv_error (); + } + else + { + *strptr = str; + str += strsize; + ++strsize; + } + } + else + { + *strptr = str; + str += strsize; + strsize *= 2; + } + } + } + + n = wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); + if (n == (size_t) -1) + encode_error (); + + assert (n <= MB_CUR_MAX); + str += n; + } + while (--width > 0); + out2: +#else do { + if (inchar () == EOF) + break; + if (wp[c] == not_in) { ungetc (c, s); break; } - STRING_ADD_CHAR (str, c, char); - if (width > 0) - --width; + + /* This is easy. */ + if (!(flags & SUPPRESS)) + { + *str++ = c; + if ((flags & MALLOC) + && (char *) str == *strptr + strsize) + { + /* Enlarge the buffer. */ + str = (char *) realloc (*strptr, 2 * strsize); + if (str == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + str = (char *) realloc (*strptr, strsize + 1); + if (str == NULL) + { + /* We lose. Oh well. Terminate the + string and stop converting, + so at least we don't skip any input. */ + ((char *) (*strptr))[strsize - 1] = '\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) str; + str += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) str; + str += strsize; + strsize *= 2; + } + } + } } - while (width != 0 && inchar () != EOF); + while (--width > 0); +#endif - if (read_in == num.ul) + if (now == read_in) + /* We haven't succesfully read any character. */ conv_error (); if (!(flags & SUPPRESS)) { +#ifdef COMPILE_WPRINTF + /* We have to emit the code to get into the intial + state. */ + char buf[MB_LEN_MAX]; + size_t n = wcrtomb (buf, L'\0', &state); + if (n > 0 && (flags & MALLOC) + && str + n >= *strptr + strsize) + { + /* Enlarge the buffer. */ + str = (char *) realloc (*strptr, + (str + n + 1) - *strptr); + if (str == NULL) + { + /* We lose. Oh well. Terminate the string + and stop converting, so at least we don't + skip any input. */ + ((char *) (*strptr))[strsize - 1] = '\0'; + ++done; + conv_error (); + } + else + { + *strptr = (char *) str; + str = ((char *) *strptr) + strsize; + strsize = (str + n + 1) - *strptr; + } + } + + str = __mempcpy (str, buf, n); +#endif *str = '\0'; + + if ((flags & MALLOC) && str - *strptr != strsize) + { + char *cp = (char *) realloc (*strptr, str - *strptr); + if (cp != NULL) + *strptr = cp; + } + ++done; } } break; - case 'p': /* Generic pointer. */ + case L_('p'): /* Generic pointer. */ base = 16; /* A PTR must be the same size as a `long int'. */ flags &= ~(SHORT|LONGDBL); @@ -1305,11 +1960,23 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } #ifdef USE_IN_LIBIO +# ifdef COMPILE_WPRINTF +int +__vfwscanf (FILE *s, const wchar_t *format, va_list argptr) +{ + return _IO_vfwscanf (s, format, argptr, NULL); +} +# else int __vfscanf (FILE *s, const char *format, va_list argptr) { return _IO_vfscanf (s, format, argptr, NULL); } +# endif #endif +#ifdef COMPILE_WPRINTF +weak_alias (__vfwscanf, vfwscanf) +#else weak_alias (__vfscanf, vfscanf) +#endif |