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Diffstat (limited to 'stdio-common/vfscanf-internal.c')
| -rw-r--r-- | stdio-common/vfscanf-internal.c | 3049 |
1 files changed, 3049 insertions, 0 deletions
diff --git a/stdio-common/vfscanf-internal.c b/stdio-common/vfscanf-internal.c new file mode 100644 index 0000000000..6bd0138f66 --- /dev/null +++ b/stdio-common/vfscanf-internal.c @@ -0,0 +1,3049 @@ +/* Internal functions for the *scanf* implementation. + Copyright (C) 1991-2018 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 + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <assert.h> +#include <errno.h> +#include <limits.h> +#include <ctype.h> +#include <stdarg.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdint.h> +#include <stdlib.h> +#include <string.h> +#include <wchar.h> +#include <wctype.h> +#include <libc-diag.h> +#include <libc-lock.h> +#include <locale/localeinfo.h> +#include <scratch_buffer.h> + +#ifdef __GNUC__ +# define HAVE_LONGLONG +# define LONGLONG long long +#else +# define LONGLONG long +#endif + +/* Determine whether we have to handle `long long' at all. */ +#if LONG_MAX == LONG_LONG_MAX +# define need_longlong 0 +#else +# define need_longlong 1 +#endif + +/* Determine whether we have to handle `long'. */ +#if INT_MAX == LONG_MAX +# define need_long 0 +#else +# define need_long 1 +#endif + +/* Those are flags in the conversion format. */ +#define LONG 0x0001 /* l: long or double */ +#define LONGDBL 0x0002 /* L: long long or long double */ +#define SHORT 0x0004 /* h: short */ +#define SUPPRESS 0x0008 /* *: suppress assignment */ +#define POINTER 0x0010 /* weird %p pointer (`fake hex') */ +#define NOSKIP 0x0020 /* do not skip blanks */ +#define NUMBER_SIGNED 0x0040 /* signed integer */ +#define GROUP 0x0080 /* ': group numbers */ +#define GNU_MALLOC 0x0100 /* a: malloc strings */ +#define CHAR 0x0200 /* hh: char */ +#define I18N 0x0400 /* I: use locale's digits */ +#define HEXA_FLOAT 0x0800 /* hexadecimal float */ +#define READ_POINTER 0x1000 /* this is a pointer value */ +#define POSIX_MALLOC 0x2000 /* m: malloc strings */ +#define MALLOC (GNU_MALLOC | POSIX_MALLOC) + +#include <locale/localeinfo.h> +#include <libioP.h> + +#ifdef COMPILE_WSCANF +# define ungetc(c, s) ((void) (c == WEOF \ + || (--read_in, \ + _IO_sputbackwc (s, c)))) +# define ungetc_not_eof(c, s) ((void) (--read_in, \ + _IO_sputbackwc (s, c))) +# define inchar() (c == WEOF ? ((errno = inchar_errno), WEOF) \ + : ((c = _IO_getwc_unlocked (s)), \ + (void) (c != WEOF \ + ? ++read_in \ + : (size_t) (inchar_errno = errno)), c)) + +# define ISSPACE(Ch) iswspace (Ch) +# define ISDIGIT(Ch) iswdigit (Ch) +# define ISXDIGIT(Ch) iswxdigit (Ch) +# define TOLOWER(Ch) towlower (Ch) +# define ORIENT if (_IO_fwide (s, 1) != 1) return WEOF +# 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 +# undef EOF +# define EOF WEOF +#else +# define ungetc(c, s) ((void) ((int) c == EOF \ + || (--read_in, \ + _IO_sputbackc (s, (unsigned char) c)))) +# define ungetc_not_eof(c, s) ((void) (--read_in, \ + _IO_sputbackc (s, (unsigned char) c))) +# define inchar() (c == EOF ? ((errno = inchar_errno), EOF) \ + : ((c = _IO_getc_unlocked (s)), \ + (void) (c != EOF \ + ? ++read_in \ + : (size_t) (inchar_errno = errno)), c)) +# define ISSPACE(Ch) __isspace_l (Ch, loc) +# define ISDIGIT(Ch) __isdigit_l (Ch, loc) +# define ISXDIGIT(Ch) __isxdigit_l (Ch, loc) +# define TOLOWER(Ch) __tolower_l ((unsigned char) (Ch), loc) +# define ORIENT if (_IO_vtable_offset (s) == 0 \ + && _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 + +#include "printf-parse.h" /* Use read_int. */ + +#define encode_error() do { \ + __set_errno (EILSEQ); \ + goto errout; \ + } while (0) +#define conv_error() do { \ + goto errout; \ + } while (0) +#define input_error() do { \ + if (done == 0) done = EOF; \ + goto errout; \ + } while (0) +#define add_ptr_to_free(ptr) \ + do \ + { \ + if (ptrs_to_free == NULL \ + || ptrs_to_free->count == (sizeof (ptrs_to_free->ptrs) \ + / sizeof (ptrs_to_free->ptrs[0]))) \ + { \ + struct ptrs_to_free *new_ptrs = alloca (sizeof (*ptrs_to_free)); \ + new_ptrs->count = 0; \ + new_ptrs->next = ptrs_to_free; \ + ptrs_to_free = new_ptrs; \ + } \ + ptrs_to_free->ptrs[ptrs_to_free->count++] = (ptr); \ + } \ + while (0) +#define ARGCHECK(s, format) \ + do \ + { \ + /* Check file argument for consistence. */ \ + CHECK_FILE (s, EOF); \ + if (s->_flags & _IO_NO_READS) \ + { \ + __set_errno (EBADF); \ + return EOF; \ + } \ + else if (format == NULL) \ + { \ + __set_errno (EINVAL); \ + return EOF; \ + } \ + } while (0) +#define LOCK_STREAM(S) \ + __libc_cleanup_region_start (1, (void (*) (void *)) &_IO_funlockfile, (S)); \ + _IO_flockfile (S) +#define UNLOCK_STREAM(S) \ + _IO_funlockfile (S); \ + __libc_cleanup_region_end (0) + +struct ptrs_to_free +{ + size_t count; + struct ptrs_to_free *next; + char **ptrs[32]; +}; + +struct char_buffer { + CHAR_T *current; + CHAR_T *end; + struct scratch_buffer scratch; +}; + +/* Returns a pointer to the first CHAR_T object in the buffer. Only + valid if char_buffer_add (BUFFER, CH) has been called and + char_buffer_error (BUFFER) is false. */ +static inline CHAR_T * +char_buffer_start (const struct char_buffer *buffer) +{ + return (CHAR_T *) buffer->scratch.data; +} + +/* Returns the number of CHAR_T objects in the buffer. Only valid if + char_buffer_error (BUFFER) is false. */ +static inline size_t +char_buffer_size (const struct char_buffer *buffer) +{ + return buffer->current - char_buffer_start (buffer); +} + +/* Reinitializes BUFFER->current and BUFFER->end to cover the entire + scratch buffer. */ +static inline void +char_buffer_rewind (struct char_buffer *buffer) +{ + buffer->current = char_buffer_start (buffer); + buffer->end = buffer->current + buffer->scratch.length / sizeof (CHAR_T); +} + +/* Returns true if a previous call to char_buffer_add (BUFFER, CH) + failed. */ +static inline bool +char_buffer_error (const struct char_buffer *buffer) +{ + return __glibc_unlikely (buffer->current == NULL); +} + +/* Slow path for char_buffer_add. */ +static void +char_buffer_add_slow (struct char_buffer *buffer, CHAR_T ch) +{ + if (char_buffer_error (buffer)) + return; + size_t offset = buffer->end - (CHAR_T *) buffer->scratch.data; + if (!scratch_buffer_grow_preserve (&buffer->scratch)) + { + buffer->current = NULL; + buffer->end = NULL; + return; + } + char_buffer_rewind (buffer); + buffer->current += offset; + *buffer->current++ = ch; +} + +/* Adds CH to BUFFER. This function does not report any errors, check + for them with char_buffer_error. */ +static inline void +char_buffer_add (struct char_buffer *buffer, CHAR_T ch) + __attribute__ ((always_inline)); +static inline void +char_buffer_add (struct char_buffer *buffer, CHAR_T ch) +{ + if (__glibc_unlikely (buffer->current == buffer->end)) + char_buffer_add_slow (buffer, ch); + else + *buffer->current++ = ch; +} + +/* Read formatted input from S according to the format string + FORMAT, using the argument list in ARG. + Return the number of assignments made, or -1 for an input error. */ +#ifdef COMPILE_WSCANF +int +__vfwscanf_internal (FILE *s, const wchar_t *format, va_list argptr, + unsigned int mode_flags) +#else +int +__vfscanf_internal (FILE *s, const char *format, va_list argptr, + unsigned int mode_flags) +#endif +{ + va_list arg; + const CHAR_T *f = format; + UCHAR_T fc; /* Current character of the format. */ + WINT_T done = 0; /* Assignments done. */ + size_t read_in = 0; /* Chars read in. */ + WINT_T c = 0; /* Last char read. */ + int width; /* Maximum field width. */ + int flags; /* Modifiers for current format element. */ +#ifndef COMPILE_WSCANF + locale_t loc = _NL_CURRENT_LOCALE; + struct __locale_data *const curctype = loc->__locales[LC_CTYPE]; +#endif + + /* Errno of last failed inchar call. */ + int inchar_errno = 0; + /* Status for reading F-P nums. */ + char got_digit, got_dot, got_e, got_sign; + /* If a [...] is a [^...]. */ + CHAR_T not_in; +#define exp_char not_in + /* Base for integral numbers. */ + int base; + /* Decimal point character. */ +#ifdef COMPILE_WSCANF + wint_t decimal; +#else + const char *decimal; +#endif + /* The thousands character of the current locale. */ +#ifdef COMPILE_WSCANF + wint_t thousands; +#else + const char *thousands; +#endif + struct ptrs_to_free *ptrs_to_free = NULL; + /* State for the conversions. */ + mbstate_t state; + /* Integral holding variables. */ + union + { + long long int q; + unsigned long long int uq; + long int l; + unsigned long int ul; + } num; + /* Character-buffer pointer. */ + char *str = NULL; + wchar_t *wstr = NULL; + char **strptr = NULL; + ssize_t strsize = 0; + /* We must not react on white spaces immediately because they can + possibly be matched even if in the input stream no character is + available anymore. */ + int skip_space = 0; + /* Workspace. */ + CHAR_T *tw; /* Temporary pointer. */ + struct char_buffer charbuf; + scratch_buffer_init (&charbuf.scratch); + + /* Temporarily honor the environmental mode bits. */ + if (__ldbl_is_dbl) + mode_flags |= SCANF_LDBL_IS_DBL; + if (s->_flags2 & _IO_FLAGS2_SCANF_STD) + mode_flags |= SCANF_ISOC99_A; + +#ifdef __va_copy + __va_copy (arg, argptr); +#else + arg = (va_list) argptr; +#endif + +#ifdef ORIENT + ORIENT; +#endif + + ARGCHECK (s, format); + + { +#ifndef COMPILE_WSCANF + struct __locale_data *const curnumeric = loc->__locales[LC_NUMERIC]; +#endif + + /* Figure out the decimal point character. */ +#ifdef COMPILE_WSCANF + decimal = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_DECIMAL_POINT_WC); +#else + decimal = curnumeric->values[_NL_ITEM_INDEX (DECIMAL_POINT)].string; +#endif + /* Figure out the thousands separator character. */ +#ifdef COMPILE_WSCANF + thousands = _NL_CURRENT_WORD (LC_NUMERIC, _NL_NUMERIC_THOUSANDS_SEP_WC); +#else + thousands = curnumeric->values[_NL_ITEM_INDEX (THOUSANDS_SEP)].string; + if (*thousands == '\0') + thousands = NULL; +#endif + } + + /* Lock the stream. */ + LOCK_STREAM (s); + + +#ifndef COMPILE_WSCANF + /* 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') + { + unsigned int argpos; + /* Extract the next argument, which is of type TYPE. + For a %N$... spec, this is the Nth argument from the beginning; + otherwise it is the next argument after the state now in ARG. */ +#ifdef __va_copy +# define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ + ({ unsigned int pos = argpos; \ + va_list arg; \ + __va_copy (arg, argptr); \ + while (--pos > 0) \ + (void) va_arg (arg, void *); \ + va_arg (arg, type); \ + })) +#else +# if 0 + /* XXX Possible optimization. */ +# define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ + ({ va_list arg = (va_list) argptr; \ + arg = (va_list) ((char *) arg \ + + (argpos - 1) \ + * __va_rounded_size (void *)); \ + va_arg (arg, type); \ + })) +# else +# define ARG(type) (argpos == 0 ? va_arg (arg, type) : \ + ({ unsigned int pos = argpos; \ + va_list arg = (va_list) argptr; \ + while (--pos > 0) \ + (void) va_arg (arg, void *); \ + va_arg (arg, type); \ + })) +# endif +#endif + +#ifndef COMPILE_WSCANF + if (!isascii ((unsigned char) *f)) + { + /* Non-ASCII, may be a multibyte. */ + int len = __mbrlen (f, strlen (f), &state); + if (len > 0) + { + do + { + c = inchar (); + if (__glibc_unlikely (c == EOF)) + input_error (); + else if (c != (unsigned char) *f++) + { + ungetc_not_eof (c, s); + conv_error (); + } + } + while (--len > 0); + continue; + } + } +#endif + + fc = *f++; + if (fc != '%') + { + /* Remember to skip spaces. */ + if (ISSPACE (fc)) + { + skip_space = 1; + continue; + } + + /* Read a character. */ + c = inchar (); + + /* Characters other than format specs must just match. */ + if (__glibc_unlikely (c == EOF)) + input_error (); + + /* We saw white space char as the last character in the format + string. Now it's time to skip all leading white space. */ + if (skip_space) + { + while (ISSPACE (c)) + if (__glibc_unlikely (inchar () == EOF)) + input_error (); + skip_space = 0; + } + + if (__glibc_unlikely (c != fc)) + { + ungetc (c, s); + conv_error (); + } + + continue; + } + + /* This is the start of the conversion string. */ + flags = 0; + + /* Initialize state of modifiers. */ + argpos = 0; + + /* Prepare temporary buffer. */ + char_buffer_rewind (&charbuf); + + /* Check for a positional parameter specification. */ + if (ISDIGIT ((UCHAR_T) *f)) + { + argpos = read_int ((const UCHAR_T **) &f); + if (*f == L_('$')) + ++f; + else + { + /* Oops; that was actually the field width. */ + width = argpos; + argpos = 0; + goto got_width; + } + } + + /* 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_('*'): + flags |= SUPPRESS; + break; + case L_('\''): +#ifdef COMPILE_WSCANF + if (thousands != L'\0') +#else + if (thousands != NULL) +#endif + flags |= GROUP; + break; + case L_('I'): + flags |= I18N; + break; + } + + /* Find the maximum field width. */ + width = 0; + if (ISDIGIT ((UCHAR_T) *f)) + width = read_int ((const UCHAR_T **) &f); + got_width: + if (width == 0) + width = -1; + + /* Check for type modifiers. */ + switch (*f++) + { + case L_('h'): + /* ints are short ints or chars. */ + if (*f == L_('h')) + { + ++f; + flags |= CHAR; + } + else + flags |= SHORT; + break; + case L_('l'): + if (*f == L_('l')) + { + /* A double `l' is equivalent to an `L'. */ + ++f; + flags |= LONGDBL | LONG; + } + else + /* ints are long ints. */ + flags |= LONG; + break; + case L_('q'): + case L_('L'): + /* doubles are long doubles, and ints are long long ints. */ + flags |= LONGDBL | LONG; + break; + case L_('a'): + /* The `a' is used as a flag only if followed by `s', `S' or + `['. */ + if (*f != L_('s') && *f != L_('S') && *f != L_('[')) + { + --f; + break; + } + /* In __isoc99_*scanf %as, %aS and %a[ extension is not + supported at all. */ + if (__glibc_likely ((mode_flags & SCANF_ISOC99_A) != 0)) + { + --f; + break; + } + /* String conversions (%s, %[) take a `char **' + arg and fill it in with a malloc'd pointer. */ + flags |= GNU_MALLOC; + break; + case L_('m'): + flags |= POSIX_MALLOC; + if (*f == L_('l')) + { + ++f; + flags |= LONG; + } + break; + 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 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 L_('t'): + if (need_longlong && sizeof (ptrdiff_t) > sizeof (long int)) + flags |= LONGDBL; + else if (sizeof (ptrdiff_t) > sizeof (int)) + flags |= LONG; + break; + default: + /* Not a recognized modifier. Backup. */ + --f; + break; + } + + /* End of the format string? */ + if (__glibc_unlikely (*f == L_('\0'))) + conv_error (); + + /* Find the conversion specifier. */ + fc = *f++; + if (skip_space || (fc != L_('[') && fc != L_('c') + && fc != L_('C') && fc != L_('n'))) + { + /* Eat whitespace. */ + int save_errno = errno; + __set_errno (0); + do + /* We add the additional test for EOF here since otherwise + inchar will restore the old errno value which might be + EINTR but does not indicate an interrupt since nothing + was read at this time. */ + if (__builtin_expect ((c == EOF || inchar () == EOF) + && errno == EINTR, 0)) + input_error (); + while (ISSPACE (c)); + __set_errno (save_errno); + ungetc (c, s); + skip_space = 0; + } + + switch (fc) + { + case L_('%'): /* Must match a literal '%'. */ + c = inchar (); + if (__glibc_unlikely (c == EOF)) + input_error (); + if (__glibc_unlikely (c != fc)) + { + ungetc_not_eof (c, s); + conv_error (); + } + break; + + 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)) + { + /* Don't count the read-ahead. */ + if (need_longlong && (flags & LONGDBL)) + *ARG (long long int *) = read_in; + else if (need_long && (flags & LONG)) + *ARG (long int *) = read_in; + else if (flags & SHORT) + *ARG (short int *) = read_in; + else if (!(flags & CHAR)) + *ARG (int *) = read_in; + else + *ARG (char *) = read_in; + +#ifdef NO_BUG_IN_ISO_C_CORRIGENDUM_1 + /* We have a severe problem here. The ISO C standard + contradicts itself in explaining the effect of the %n + format in `scanf'. While in ISO C:1990 and the ISO C + Amendement 1:1995 the result is described as + + Execution of a %n directive does not effect the + assignment count returned at the completion of + execution of the f(w)scanf function. + + in ISO C Corrigendum 1:1994 the following was added: + + Subclause 7.9.6.2 + Add the following fourth example: + In: + #include <stdio.h> + int d1, d2, n1, n2, i; + i = sscanf("123", "%d%n%n%d", &d1, &n1, &n2, &d2); + the value 123 is assigned to d1 and the value3 to n1. + Because %n can never get an input failure the value + of 3 is also assigned to n2. The value of d2 is not + affected. The value 3 is assigned to i. + + We go for now with the historically correct code from ISO C, + i.e., we don't count the %n assignments. When it ever + should proof to be wrong just remove the #ifdef above. */ + ++done; +#endif + } + break; + + case L_('c'): /* Match characters. */ + if ((flags & LONG) == 0) + { + if (width == -1) + width = 1; + +#define STRING_ARG(Str, Type, Width) \ + do if (!(flags & SUPPRESS)) \ + { \ + if (flags & MALLOC) \ + { \ + /* The string is to be stored in a malloc'd buffer. */ \ + /* For %mS using char ** is actually wrong, but \ + shouldn't make a difference on any arch glibc \ + supports and would unnecessarily complicate \ + things. */ \ + strptr = ARG (char **); \ + if (strptr == NULL) \ + conv_error (); \ + /* Allocate an initial buffer. */ \ + strsize = Width; \ + *strptr = (char *) malloc (strsize * sizeof (Type)); \ + Str = (Type *) *strptr; \ + if (Str != NULL) \ + add_ptr_to_free (strptr); \ + else if (flags & POSIX_MALLOC) \ + { \ + done = EOF; \ + goto errout; \ + } \ + } \ + else \ + Str = ARG (Type *); \ + if (Str == NULL) \ + conv_error (); \ + } while (0) +#ifdef COMPILE_WSCANF + STRING_ARG (str, char, 100); +#else + STRING_ARG (str, char, (width > 1024 ? 1024 : width)); +#endif + + c = inchar (); + if (__glibc_unlikely (c == EOF)) + input_error (); + +#ifdef COMPILE_WSCANF + /* We have to convert the wide character(s) into multibyte + characters and store the result. */ + memset (&state, '\0', sizeof (state)); + + do + { + size_t n; + + if (!(flags & SUPPRESS) && (flags & POSIX_MALLOC) + && *strptr + strsize - str <= MB_LEN_MAX) + { + /* We have to enlarge the buffer if the `m' flag + was given. */ + size_t strleng = str - *strptr; + char *newstr; + + newstr = (char *) realloc (*strptr, strsize * 2); + if (newstr == NULL) + { + /* Can't allocate that much. Last-ditch effort. */ + newstr = (char *) realloc (*strptr, + strleng + MB_LEN_MAX); + if (newstr == NULL) + { + /* c can't have `a' flag, only `m'. */ + done = EOF; + goto errout; + } + else + { + *strptr = newstr; + str = newstr + strleng; + strsize = strleng + MB_LEN_MAX; + } + } + else + { + *strptr = newstr; + str = newstr + strleng; + strsize *= 2; + } + } + + n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); + if (__glibc_unlikely (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 + { + if ((flags & MALLOC) + && (char *) str == *strptr + strsize) + { + /* Enlarge the buffer. */ + size_t newsize + = strsize + + (strsize >= width ? width - 1 : strsize); + + str = (char *) realloc (*strptr, newsize); + if (str == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + str = (char *) realloc (*strptr, strsize + 1); + if (str == NULL) + { + /* c can't have `a' flag, only `m'. */ + done = EOF; + goto errout; + } + else + { + *strptr = (char *) str; + str += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) str; + str += strsize; + strsize = newsize; + } + } + *str++ = c; + } + while (--width > 0 && inchar () != EOF); + } + else + while (--width > 0 && inchar () != EOF); +#endif + + if (!(flags & SUPPRESS)) + { + if ((flags & MALLOC) && str - *strptr != strsize) + { + char *cp = (char *) realloc (*strptr, str - *strptr); + if (cp != NULL) + *strptr = cp; + } + strptr = NULL; + ++done; + } + + break; + } + /* FALLTHROUGH */ + case L_('C'): + if (width == -1) + width = 1; + + STRING_ARG (wstr, wchar_t, (width > 1024 ? 1024 : width)); + + c = inchar (); + if (__glibc_unlikely (c == EOF)) + input_error (); + +#ifdef COMPILE_WSCANF + /* Just store the incoming wide characters. */ + if (!(flags & SUPPRESS)) + { + do + { + if ((flags & MALLOC) + && wstr == (wchar_t *) *strptr + strsize) + { + size_t newsize + = strsize + (strsize > width ? width - 1 : strsize); + /* Enlarge the buffer. */ + wstr = (wchar_t *) realloc (*strptr, + newsize * 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) + { + /* C or lc can't have `a' flag, only `m' + flag. */ + done = EOF; + goto errout; + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize = newsize; + } + } + *wstr++ = c; + } + while (--width > 0 && inchar () != EOF); + } + else + while (--width > 0 && inchar () != EOF); +#else + { + /* We have to convert the multibyte input sequence to wide + characters. */ + char buf[1]; + mbstate_t cstate; + + memset (&cstate, '\0', sizeof (cstate)); + + do + { + /* This is what we present the mbrtowc function first. */ + buf[0] = c; + + if (!(flags & SUPPRESS) && (flags & MALLOC) + && wstr == (wchar_t *) *strptr + strsize) + { + size_t newsize + = strsize + (strsize > width ? width - 1 : strsize); + /* Enlarge the buffer. */ + wstr = (wchar_t *) realloc (*strptr, + newsize * 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) + { + /* C or lc can't have `a' flag, only `m' flag. */ + done = EOF; + goto errout; + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize = newsize; + } + } + + while (1) + { + size_t n; + + n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, + buf, 1, &cstate); + + if (n == (size_t) -2) + { + /* Possibly correct character, just not enough + input. */ + if (__glibc_unlikely (inchar () == EOF)) + encode_error (); + + buf[0] = c; + continue; + } + + if (__glibc_unlikely (n != 1)) + encode_error (); + + /* We have a match. */ + break; + } + + /* Advance the result pointer. */ + ++wstr; + } + while (--width > 0 && inchar () != EOF); + } +#endif + + if (!(flags & SUPPRESS)) + { + 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; + } + strptr = NULL; + + ++done; + } + + break; + + case L_('s'): /* Read a string. */ + if (!(flags & LONG)) + { + STRING_ARG (str, char, 100); + + c = inchar (); + if (__glibc_unlikely (c == EOF)) + input_error (); + +#ifdef COMPILE_WSCANF + memset (&state, '\0', sizeof (state)); +#endif + + do + { + if (ISSPACE (c)) + { + ungetc_not_eof (c, s); + break; + } + +#ifdef COMPILE_WSCANF + /* 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) + && *strptr + strsize - str <= MB_LEN_MAX) + { + /* We have to enlarge the buffer if the `a' or `m' + flag was given. */ + size_t strleng = str - *strptr; + char *newstr; + + newstr = (char *) realloc (*strptr, strsize * 2); + if (newstr == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + newstr = (char *) realloc (*strptr, + strleng + MB_LEN_MAX); + if (newstr == NULL) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* We lose. Oh well. Terminate the + string and stop converting, + so at least we don't skip any input. */ + ((char *) (*strptr))[strleng] = '\0'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = newstr; + str = newstr + strleng; + strsize = strleng + MB_LEN_MAX; + } + } + else + { + *strptr = newstr; + str = newstr + strleng; + strsize *= 2; + } + } + + n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, + &state); + if (__glibc_unlikely (n == (size_t) -1)) + encode_error (); + + assert (n <= MB_LEN_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) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* We lose. Oh well. Terminate the + string and stop converting, + so at least we don't skip any input. */ + ((char *) (*strptr))[strsize - 1] = '\0'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = (char *) str; + str += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) str; + str += strsize; + strsize *= 2; + } + } + } +#endif + } + while ((width <= 0 || --width > 0) && inchar () != EOF); + + if (!(flags & SUPPRESS)) + { +#ifdef COMPILE_WSCANF + /* We have to emit the code to get into the initial + 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. */ + size_t strleng = str - *strptr; + char *newstr; + + newstr = (char *) realloc (*strptr, strleng + n + 1); + if (newstr == NULL) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* We lose. Oh well. Terminate the string + and stop converting, so at least we don't + skip any input. */ + ((char *) (*strptr))[strleng] = '\0'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = newstr; + str = newstr + strleng; + strsize = strleng + n + 1; + } + } + + 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; + } + strptr = NULL; + + ++done; + } + break; + } + /* FALLTHROUGH */ + + case L_('S'): + { +#ifndef COMPILE_WSCANF + mbstate_t cstate; +#endif + + /* Wide character string. */ + STRING_ARG (wstr, wchar_t, 100); + + c = inchar (); + if (__builtin_expect (c == EOF, 0)) + input_error (); + +#ifndef COMPILE_WSCANF + memset (&cstate, '\0', sizeof (cstate)); +#endif + + do + { + if (ISSPACE (c)) + { + ungetc_not_eof (c, s); + break; + } + +#ifdef COMPILE_WSCANF + /* 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 + 1) + * sizeof (wchar_t)); + if (wstr == NULL) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* 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'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize *= 2; + } + } + } +#else + { + char buf[1]; + + buf[0] = c; + + while (1) + { + size_t n; + + n = __mbrtowc (!(flags & SUPPRESS) ? wstr : NULL, + buf, 1, &cstate); + + if (n == (size_t) -2) + { + /* Possibly correct character, just not enough + input. */ + if (__glibc_unlikely (inchar () == EOF)) + encode_error (); + + buf[0] = c; + continue; + } + + if (__glibc_unlikely (n != 1)) + encode_error (); + + /* We have a match. */ + ++wstr; + 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) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* 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'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize *= 2; + } + } + } +#endif + } + while ((width <= 0 || --width > 0) && inchar () != EOF); + + if (!(flags & SUPPRESS)) + { + *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; + } + strptr = NULL; + + ++done; + } + } + break; + + case L_('x'): /* Hexadecimal integer. */ + case L_('X'): /* Ditto. */ + base = 16; + goto number; + + case L_('o'): /* Octal integer. */ + base = 8; + goto number; + + case L_('u'): /* Unsigned decimal integer. */ + base = 10; + goto number; + + case L_('d'): /* Signed decimal integer. */ + base = 10; + flags |= NUMBER_SIGNED; + goto number; + + case L_('i'): /* Generic number. */ + base = 0; + flags |= NUMBER_SIGNED; + + number: + c = inchar (); + if (__glibc_unlikely (c == EOF)) + input_error (); + + /* Check for a sign. */ + if (c == L_('-') || c == L_('+')) + { + char_buffer_add (&charbuf, c); + if (width > 0) + --width; + c = inchar (); + } + + /* Look for a leading indication of base. */ + if (width != 0 && c == L_('0')) + { + if (width > 0) + --width; + + char_buffer_add (&charbuf, c); + c = inchar (); + + if (width != 0 && TOLOWER (c) == L_('x')) + { + if (base == 0) + base = 16; + if (base == 16) + { + if (width > 0) + --width; + c = inchar (); + } + } + else if (base == 0) + base = 8; + } + + if (base == 0) + base = 10; + + if (base == 10 && __builtin_expect ((flags & I18N) != 0, 0)) + { + int from_level; + int to_level; + int level; +#ifdef COMPILE_WSCANF + const wchar_t *wcdigits[10]; + const wchar_t *wcdigits_extended[10]; +#else + const char *mbdigits[10]; + const char *mbdigits_extended[10]; +#endif + /* "to_inpunct" is a map from ASCII digits to their + equivalent in locale. This is defined for locales + which use an extra digits set. */ + wctrans_t map = __wctrans ("to_inpunct"); + int n; + + from_level = 0; +#ifdef COMPILE_WSCANF + to_level = _NL_CURRENT_WORD (LC_CTYPE, + _NL_CTYPE_INDIGITS_WC_LEN) - 1; +#else + to_level = (uint32_t) curctype->values[_NL_ITEM_INDEX (_NL_CTYPE_INDIGITS_MB_LEN)].word - 1; +#endif + + /* Get the alternative digit forms if there are any. */ + if (__glibc_unlikely (map != NULL)) + { + /* Adding new level for extra digits set in locale file. */ + ++to_level; + + for (n = 0; n < 10; ++n) + { +#ifdef COMPILE_WSCANF + wcdigits[n] = (const wchar_t *) + _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); + + wchar_t *wc_extended = (wchar_t *) + alloca ((to_level + 2) * sizeof (wchar_t)); + __wmemcpy (wc_extended, wcdigits[n], to_level); + wc_extended[to_level] = __towctrans (L'0' + n, map); + wc_extended[to_level + 1] = '\0'; + wcdigits_extended[n] = wc_extended; +#else + mbdigits[n] + = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; + + /* Get the equivalent wide char in map. */ + wint_t extra_wcdigit = __towctrans (L'0' + n, map); + + /* Convert it to multibyte representation. */ + mbstate_t state; + memset (&state, '\0', sizeof (state)); + + char extra_mbdigit[MB_LEN_MAX]; + size_t mblen + = __wcrtomb (extra_mbdigit, extra_wcdigit, &state); + + if (mblen == (size_t) -1) + { + /* Ignore this new level. */ + map = NULL; + break; + } + + /* Calculate the length of mbdigits[n]. */ + const char *last_char = mbdigits[n]; + for (level = 0; level < to_level; ++level) + last_char = strchr (last_char, '\0') + 1; + + size_t mbdigits_len = last_char - mbdigits[n]; + + /* Allocate memory for extended multibyte digit. */ + char *mb_extended; + mb_extended = (char *) alloca (mbdigits_len + mblen + 1); + + /* And get the mbdigits + extra_digit string. */ + *(char *) __mempcpy (__mempcpy (mb_extended, mbdigits[n], + mbdigits_len), + extra_mbdigit, mblen) = '\0'; + mbdigits_extended[n] = mb_extended; +#endif + } + } + + /* Read the number into workspace. */ + while (c != EOF && width != 0) + { + /* 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) + { + /* Get the string for the digits with value N. */ +#ifdef COMPILE_WSCANF + + /* wcdigits_extended[] is fully set in the loop + above, but the test for "map != NULL" is done + inside the loop here and outside the loop there. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.7, "-Wmaybe-uninitialized"); + + if (__glibc_unlikely (map != NULL)) + wcdigits[n] = wcdigits_extended[n]; + else + wcdigits[n] = (const wchar_t *) + _NL_CURRENT (LC_CTYPE, _NL_CTYPE_INDIGITS0_WC + n); + wcdigits[n] += from_level; + + DIAG_POP_NEEDS_COMMENT; + + if (c == (wint_t) *wcdigits[n]) + { + to_level = from_level; + break; + } + + /* Advance the pointer to the next string. */ + ++wcdigits[n]; +#else + const char *cmpp; + int avail = width > 0 ? width : INT_MAX; + + if (__glibc_unlikely (map != NULL)) + mbdigits[n] = mbdigits_extended[n]; + else + mbdigits[n] + = curctype->values[_NL_CTYPE_INDIGITS0_MB + n].string; + + for (level = 0; level < from_level; level++) + mbdigits[n] = strchr (mbdigits[n], '\0') + 1; + + cmpp = mbdigits[n]; + while ((unsigned char) *cmpp == c && avail >= 0) + { + if (*++cmpp == '\0') + break; + else + { + if (avail == 0 || inchar () == EOF) + break; + --avail; + } + } + + if (*cmpp == '\0') + { + if (width > 0) + width = avail; + to_level = from_level; + break; + } + + /* We are pushing all read characters back. */ + if (cmpp > mbdigits[n]) + { + ungetc (c, s); + while (--cmpp > mbdigits[n]) + ungetc_not_eof ((unsigned char) *cmpp, s); + c = (unsigned char) *cmpp; + } + + /* Advance the pointer to the next string. */ + mbdigits[n] = strchr (mbdigits[n], '\0') + 1; +#endif + } + + if (n == 10) + { + /* Have not yet found the digit. */ + for (level = from_level + 1; level <= to_level; ++level) + { + /* Search all ten digits of this level. */ + for (n = 0; n < 10; ++n) + { +#ifdef COMPILE_WSCANF + if (c == (wint_t) *wcdigits[n]) + break; + + /* Advance the pointer to the next string. */ + ++wcdigits[n]; +#else + const char *cmpp; + int avail = width > 0 ? width : INT_MAX; + + cmpp = mbdigits[n]; + while ((unsigned char) *cmpp == c && avail >= 0) + { + if (*++cmpp == '\0') + break; + else + { + if (avail == 0 || inchar () == EOF) + break; + --avail; + } + } + + if (*cmpp == '\0') + { + if (width > 0) + width = avail; + break; + } + + /* We are pushing all read characters back. */ + if (cmpp > mbdigits[n]) + { + ungetc (c, s); + while (--cmpp > mbdigits[n]) + ungetc_not_eof ((unsigned char) *cmpp, s); + c = (unsigned char) *cmpp; + } + + /* Advance the pointer to the next string. */ + mbdigits[n] = strchr (mbdigits[n], '\0') + 1; +#endif + } + + if (n < 10) + { + /* Found it. */ + from_level = level; + to_level = level; + break; + } + } + } + + if (n < 10) + c = L_('0') + n; + else if (flags & GROUP) + { + /* Try matching against the thousands separator. */ +#ifdef COMPILE_WSCANF + if (c != thousands) + break; +#else + const char *cmpp = thousands; + int avail = width > 0 ? width : INT_MAX; + + while ((unsigned char) *cmpp == c && avail >= 0) + { + char_buffer_add (&charbuf, c); + if (*++cmpp == '\0') + break; + else + { + if (avail == 0 || inchar () == EOF) + break; + --avail; + } + } + + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + + if (*cmpp != '\0') + { + /* We are pushing all read characters back. */ + if (cmpp > thousands) + { + charbuf.current -= cmpp - thousands; + ungetc (c, s); + while (--cmpp > thousands) + ungetc_not_eof ((unsigned char) *cmpp, s); + c = (unsigned char) *cmpp; + } + break; + } + + if (width > 0) + width = avail; + + /* The last thousands character will be added back by + the char_buffer_add below. */ + --charbuf.current; +#endif + } + else + break; + + char_buffer_add (&charbuf, c); + if (width > 0) + --width; + + c = inchar (); + } + } + else + /* Read the number into workspace. */ + while (c != EOF && width != 0) + { + if (base == 16) + { + if (!ISXDIGIT (c)) + break; + } + else if (!ISDIGIT (c) || (int) (c - L_('0')) >= base) + { + if (base == 10 && (flags & GROUP)) + { + /* Try matching against the thousands separator. */ +#ifdef COMPILE_WSCANF + if (c != thousands) + break; +#else + const char *cmpp = thousands; + int avail = width > 0 ? width : INT_MAX; + + while ((unsigned char) *cmpp == c && avail >= 0) + { + char_buffer_add (&charbuf, c); + if (*++cmpp == '\0') + break; + else + { + if (avail == 0 || inchar () == EOF) + break; + --avail; + } + } + + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + + if (*cmpp != '\0') + { + /* We are pushing all read characters back. */ + if (cmpp > thousands) + { + charbuf.current -= cmpp - thousands; + ungetc (c, s); + while (--cmpp > thousands) + ungetc_not_eof ((unsigned char) *cmpp, s); + c = (unsigned char) *cmpp; + } + break; + } + + if (width > 0) + width = avail; + + /* The last thousands character will be added back by + the char_buffer_add below. */ + --charbuf.current; +#endif + } + else + break; + } + char_buffer_add (&charbuf, c); + if (width > 0) + --width; + + c = inchar (); + } + + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + + if (char_buffer_size (&charbuf) == 0 + || (char_buffer_size (&charbuf) == 1 + && (char_buffer_start (&charbuf)[0] == L_('+') + || char_buffer_start (&charbuf)[0] == L_('-')))) + { + /* There was no number. If we are supposed to read a pointer + we must recognize "(nil)" as well. */ + if (__builtin_expect (char_buffer_size (&charbuf) == 0 + && (flags & READ_POINTER) + && (width < 0 || width >= 5) + && c == '(' + && TOLOWER (inchar ()) == L_('n') + && TOLOWER (inchar ()) == L_('i') + && TOLOWER (inchar ()) == L_('l') + && inchar () == L_(')'), 1)) + /* We must produce the value of a NULL pointer. A single + '0' digit is enough. */ + char_buffer_add (&charbuf, L_('0')); + else + { + /* The last read character is not part of the number + anymore. */ + ungetc (c, s); + + conv_error (); + } + } + else + /* The just read character is not part of the number anymore. */ + ungetc (c, s); + + /* Convert the number. */ + char_buffer_add (&charbuf, L_('\0')); + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + if (need_longlong && (flags & LONGDBL)) + { + if (flags & NUMBER_SIGNED) + num.q = __strtoll_internal + (char_buffer_start (&charbuf), &tw, base, flags & GROUP); + else + num.uq = __strtoull_internal + (char_buffer_start (&charbuf), &tw, base, flags & GROUP); + } + else + { + if (flags & NUMBER_SIGNED) + num.l = __strtol_internal + (char_buffer_start (&charbuf), &tw, base, flags & GROUP); + else + num.ul = __strtoul_internal + (char_buffer_start (&charbuf), &tw, base, flags & GROUP); + } + if (__glibc_unlikely (char_buffer_start (&charbuf) == tw)) + conv_error (); + + if (!(flags & SUPPRESS)) + { + if (flags & NUMBER_SIGNED) + { + if (need_longlong && (flags & LONGDBL)) + *ARG (LONGLONG int *) = num.q; + else if (need_long && (flags & LONG)) + *ARG (long int *) = num.l; + else if (flags & SHORT) + *ARG (short int *) = (short int) num.l; + else if (!(flags & CHAR)) + *ARG (int *) = (int) num.l; + else + *ARG (signed char *) = (signed char) num.ul; + } + else + { + if (need_longlong && (flags & LONGDBL)) + *ARG (unsigned LONGLONG int *) = num.uq; + else if (need_long && (flags & LONG)) + *ARG (unsigned long int *) = num.ul; + else if (flags & SHORT) + *ARG (unsigned short int *) + = (unsigned short int) num.ul; + else if (!(flags & CHAR)) + *ARG (unsigned int *) = (unsigned int) num.ul; + else + *ARG (unsigned char *) = (unsigned char) num.ul; + } + ++done; + } + break; + + case L_('e'): /* Floating-point numbers. */ + case L_('E'): + case L_('f'): + case L_('F'): + case L_('g'): + case L_('G'): + case L_('a'): + case L_('A'): + c = inchar (); + if (width > 0) + --width; + if (__glibc_unlikely (c == EOF)) + input_error (); + + got_digit = got_dot = got_e = got_sign = 0; + + /* Check for a sign. */ + if (c == L_('-') || c == L_('+')) + { + got_sign = 1; + char_buffer_add (&charbuf, c); + if (__glibc_unlikely (width == 0 || inchar () == EOF)) + /* EOF is only an input error before we read any chars. */ + conv_error (); + if (width > 0) + --width; + } + + /* Take care for the special arguments "nan" and "inf". */ + if (TOLOWER (c) == L_('n')) + { + /* Maybe "nan". */ + char_buffer_add (&charbuf, c); + if (__builtin_expect (width == 0 + || inchar () == EOF + || TOLOWER (c) != L_('a'), 0)) + conv_error (); + if (width > 0) + --width; + char_buffer_add (&charbuf, c); + if (__builtin_expect (width == 0 + || inchar () == EOF + || TOLOWER (c) != L_('n'), 0)) + conv_error (); + if (width > 0) + --width; + char_buffer_add (&charbuf, c); + /* It is "nan". */ + goto scan_float; + } + else if (TOLOWER (c) == L_('i')) + { + /* Maybe "inf" or "infinity". */ + char_buffer_add (&charbuf, c); + if (__builtin_expect (width == 0 + || inchar () == EOF + || TOLOWER (c) != L_('n'), 0)) + conv_error (); + if (width > 0) + --width; + char_buffer_add (&charbuf, c); + if (__builtin_expect (width == 0 + || inchar () == EOF + || TOLOWER (c) != L_('f'), 0)) + conv_error (); + if (width > 0) + --width; + char_buffer_add (&charbuf, c); + /* It is as least "inf". */ + if (width != 0 && inchar () != EOF) + { + if (TOLOWER (c) == L_('i')) + { + if (width > 0) + --width; + /* Now we have to read the rest as well. */ + char_buffer_add (&charbuf, c); + if (__builtin_expect (width == 0 + || inchar () == EOF + || TOLOWER (c) != L_('n'), 0)) + conv_error (); + if (width > 0) + --width; + char_buffer_add (&charbuf, c); + if (__builtin_expect (width == 0 + || inchar () == EOF + || TOLOWER (c) != L_('i'), 0)) + conv_error (); + if (width > 0) + --width; + char_buffer_add (&charbuf, c); + if (__builtin_expect (width == 0 + || inchar () == EOF + || TOLOWER (c) != L_('t'), 0)) + conv_error (); + if (width > 0) + --width; + char_buffer_add (&charbuf, c); + if (__builtin_expect (width == 0 + || inchar () == EOF + || TOLOWER (c) != L_('y'), 0)) + conv_error (); + if (width > 0) + --width; + char_buffer_add (&charbuf, c); + } + else + /* Never mind. */ + ungetc (c, s); + } + goto scan_float; + } + + exp_char = L_('e'); + if (width != 0 && c == L_('0')) + { + char_buffer_add (&charbuf, c); + c = inchar (); + if (width > 0) + --width; + if (width != 0 && TOLOWER (c) == L_('x')) + { + /* It is a number in hexadecimal format. */ + char_buffer_add (&charbuf, c); + + flags |= HEXA_FLOAT; + exp_char = L_('p'); + + /* Grouping is not allowed. */ + flags &= ~GROUP; + c = inchar (); + if (width > 0) + --width; + } + else + got_digit = 1; + } + + while (1) + { + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + if (ISDIGIT (c)) + { + char_buffer_add (&charbuf, c); + got_digit = 1; + } + else if (!got_e && (flags & HEXA_FLOAT) && ISXDIGIT (c)) + { + char_buffer_add (&charbuf, c); + got_digit = 1; + } + else if (got_e && charbuf.current[-1] == exp_char + && (c == L_('-') || c == L_('+'))) + char_buffer_add (&charbuf, c); + else if (got_digit && !got_e + && (CHAR_T) TOLOWER (c) == exp_char) + { + char_buffer_add (&charbuf, exp_char); + got_e = got_dot = 1; + } + else + { +#ifdef COMPILE_WSCANF + if (! got_dot && c == decimal) + { + char_buffer_add (&charbuf, c); + got_dot = 1; + } + else if ((flags & GROUP) != 0 && ! got_dot && c == thousands) + char_buffer_add (&charbuf, c); + else + { + /* The last read character is not part of the number + anymore. */ + ungetc (c, s); + break; + } +#else + const char *cmpp = decimal; + int avail = width > 0 ? width : INT_MAX; + + if (! got_dot) + { + while ((unsigned char) *cmpp == c && avail >= 0) + if (*++cmpp == '\0') + break; + else + { + if (avail == 0 || inchar () == EOF) + break; + --avail; + } + } + + if (*cmpp == '\0') + { + /* Add all the characters. */ + for (cmpp = decimal; *cmpp != '\0'; ++cmpp) + char_buffer_add (&charbuf, (unsigned char) *cmpp); + if (width > 0) + width = avail; + got_dot = 1; + } + else + { + /* Figure out whether it is a thousands separator. + There is one problem: we possibly read more than + one character. We cannot push them back but since + we know that parts of the `decimal' string matched, + we can compare against it. */ + const char *cmp2p = thousands; + + if ((flags & GROUP) != 0 && ! got_dot) + { + while (cmp2p - thousands < cmpp - decimal + && *cmp2p == decimal[cmp2p - thousands]) + ++cmp2p; + if (cmp2p - thousands == cmpp - decimal) + { + while ((unsigned char) *cmp2p == c && avail >= 0) + if (*++cmp2p == '\0') + break; + else + { + if (avail == 0 || inchar () == EOF) + break; + --avail; + } + } + } + + if (cmp2p != NULL && *cmp2p == '\0') + { + /* Add all the characters. */ + for (cmpp = thousands; *cmpp != '\0'; ++cmpp) + char_buffer_add (&charbuf, (unsigned char) *cmpp); + if (width > 0) + width = avail; + } + else + { + /* The last read character is not part of the number + anymore. */ + ungetc (c, s); + break; + } + } +#endif + } + + if (width == 0 || inchar () == EOF) + break; + + if (width > 0) + --width; + } + + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + + wctrans_t map; + if (__builtin_expect ((flags & I18N) != 0, 0) + /* Hexadecimal floats make no sense, fixing localized + digits with ASCII letters. */ + && !(flags & HEXA_FLOAT) + /* Minimum requirement. */ + && (char_buffer_size (&charbuf) == got_sign || got_dot) + && (map = __wctrans ("to_inpunct")) != NULL) + { + /* Reget the first character. */ + inchar (); + + /* Localized digits, decimal points, and thousands + separator. */ + wint_t wcdigits[12]; + + /* First get decimal equivalent to check if we read it + or not. */ + wcdigits[11] = __towctrans (L'.', map); + + /* If we have not read any character or have just read + locale decimal point which matches the decimal point + for localized FP numbers, then we may have localized + digits. Note, we test GOT_DOT above. */ +#ifdef COMPILE_WSCANF + if (char_buffer_size (&charbuf) == got_sign + || (char_buffer_size (&charbuf) == got_sign + 1 + && wcdigits[11] == decimal)) +#else + char mbdigits[12][MB_LEN_MAX + 1]; + + mbstate_t state; + memset (&state, '\0', sizeof (state)); + + bool match_so_far = char_buffer_size (&charbuf) == got_sign; + size_t mblen = __wcrtomb (mbdigits[11], wcdigits[11], &state); + if (mblen != (size_t) -1) + { + mbdigits[11][mblen] = '\0'; + match_so_far |= + (char_buffer_size (&charbuf) == strlen (decimal) + got_sign + && strcmp (decimal, mbdigits[11]) == 0); + } + else + { + size_t decimal_len = strlen (decimal); + /* This should always be the case but the data comes + from a file. */ + if (decimal_len <= MB_LEN_MAX) + { + match_so_far |= (char_buffer_size (&charbuf) + == decimal_len + got_sign); + memcpy (mbdigits[11], decimal, decimal_len + 1); + } + else + match_so_far = false; + } + + if (match_so_far) +#endif + { + bool have_locthousands = (flags & GROUP) != 0; + + /* Now get the digits and the thousands-sep equivalents. */ + for (int n = 0; n < 11; ++n) + { + if (n < 10) + wcdigits[n] = __towctrans (L'0' + n, map); + else if (n == 10) + { + wcdigits[10] = __towctrans (L',', map); + have_locthousands &= wcdigits[10] != L'\0'; + } + +#ifndef COMPILE_WSCANF + memset (&state, '\0', sizeof (state)); + + size_t mblen = __wcrtomb (mbdigits[n], wcdigits[n], + &state); + if (mblen == (size_t) -1) + { + if (n == 10) + { + if (have_locthousands) + { + size_t thousands_len = strlen (thousands); + if (thousands_len <= MB_LEN_MAX) + memcpy (mbdigits[10], thousands, + thousands_len + 1); + else + have_locthousands = false; + } + } + else + /* Ignore checking against localized digits. */ + goto no_i18nflt; + } + else + mbdigits[n][mblen] = '\0'; +#endif + } + + /* Start checking against localized digits, if + conversion is done correctly. */ + while (1) + { + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + if (got_e && charbuf.current[-1] == exp_char + && (c == L_('-') || c == L_('+'))) + char_buffer_add (&charbuf, c); + else if (char_buffer_size (&charbuf) > got_sign && !got_e + && (CHAR_T) TOLOWER (c) == exp_char) + { + char_buffer_add (&charbuf, exp_char); + got_e = got_dot = 1; + } + else + { + /* Check against localized digits, decimal point, + and thousands separator. */ + int n; + for (n = 0; n < 12; ++n) + { +#ifdef COMPILE_WSCANF + if (c == wcdigits[n]) + { + if (n < 10) + char_buffer_add (&charbuf, L_('0') + n); + else if (n == 11 && !got_dot) + { + char_buffer_add (&charbuf, decimal); + got_dot = 1; + } + else if (n == 10 && have_locthousands + && ! got_dot) + char_buffer_add (&charbuf, thousands); + else + /* The last read character is not part + of the number anymore. */ + n = 12; + + break; + } +#else + const char *cmpp = mbdigits[n]; + int avail = width > 0 ? width : INT_MAX; + + while ((unsigned char) *cmpp == c && avail >= 0) + if (*++cmpp == '\0') + break; + else + { + if (avail == 0 || inchar () == EOF) + break; + --avail; + } + if (*cmpp == '\0') + { + if (width > 0) + width = avail; + + if (n < 10) + char_buffer_add (&charbuf, L_('0') + n); + else if (n == 11 && !got_dot) + { + /* Add all the characters. */ + for (cmpp = decimal; *cmpp != '\0'; + ++cmpp) + char_buffer_add (&charbuf, + (unsigned char) *cmpp); + + got_dot = 1; + } + else if (n == 10 && (flags & GROUP) != 0 + && ! got_dot) + { + /* Add all the characters. */ + for (cmpp = thousands; *cmpp != '\0'; + ++cmpp) + char_buffer_add (&charbuf, + (unsigned char) *cmpp); + } + else + /* The last read character is not part + of the number anymore. */ + n = 12; + + break; + } + + /* We are pushing all read characters back. */ + if (cmpp > mbdigits[n]) + { + ungetc (c, s); + while (--cmpp > mbdigits[n]) + ungetc_not_eof ((unsigned char) *cmpp, s); + c = (unsigned char) *cmpp; + } +#endif + } + + if (n >= 12) + { + /* The last read character is not part + of the number anymore. */ + ungetc (c, s); + break; + } + } + + if (width == 0 || inchar () == EOF) + break; + + if (width > 0) + --width; + } + } + +#ifndef COMPILE_WSCANF + no_i18nflt: + ; +#endif + } + + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + + /* Have we read any character? If we try to read a number + in hexadecimal notation and we have read only the `0x' + prefix this is an error. */ + if (__glibc_unlikely (char_buffer_size (&charbuf) == got_sign + || ((flags & HEXA_FLOAT) + && (char_buffer_size (&charbuf) + == 2 + got_sign)))) + conv_error (); + + scan_float: + /* Convert the number. */ + char_buffer_add (&charbuf, L_('\0')); + if (char_buffer_error (&charbuf)) + { + __set_errno (ENOMEM); + done = EOF; + goto errout; + } + if ((flags & LONGDBL) \ + && __glibc_likely ((mode_flags & SCANF_LDBL_IS_DBL) == 0)) + { + long double d = __strtold_internal + (char_buffer_start (&charbuf), &tw, flags & GROUP); + if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) + *ARG (long double *) = d; + } + else if (flags & (LONG | LONGDBL)) + { + double d = __strtod_internal + (char_buffer_start (&charbuf), &tw, flags & GROUP); + if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) + *ARG (double *) = d; + } + else + { + float d = __strtof_internal + (char_buffer_start (&charbuf), &tw, flags & GROUP); + if (!(flags & SUPPRESS) && tw != char_buffer_start (&charbuf)) + *ARG (float *) = d; + } + + if (__glibc_unlikely (tw == char_buffer_start (&charbuf))) + conv_error (); + + if (!(flags & SUPPRESS)) + ++done; + break; + + case L_('['): /* Character class. */ + if (flags & LONG) + STRING_ARG (wstr, wchar_t, 100); + else + STRING_ARG (str, char, 100); + + if (*f == L_('^')) + { + ++f; + not_in = 1; + } + 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_WSCANF + /* 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 == L']') + ++f; + + while ((fc = *f++) != L'\0' && fc != L']'); + + if (__glibc_unlikely (fc == L'\0')) + conv_error (); + wchar_t *twend = (wchar_t *) f - 1; +#else + /* Fill WP with byte flags indexed by character. + We will use this flag map for matching input characters. */ + if (!scratch_buffer_set_array_size + (&charbuf.scratch, UCHAR_MAX + 1, 1)) + { + done = EOF; + goto errout; + } + memset (charbuf.scratch.data, '\0', UCHAR_MAX + 1); + + fc = *f; + if (fc == ']' || fc == '-') + { + /* If ] or - appears before any char in the set, it is not + the terminator or separator, but the first char in the + set. */ + ((char *)charbuf.scratch.data)[fc] = 1; + ++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 = (unsigned char) f[-2]; fc < (unsigned char) *f; ++fc) + ((char *)charbuf.scratch.data)[fc] = 1; + } + else + /* Add the character to the flag map. */ + ((char *)charbuf.scratch.data)[fc] = 1; + + if (__glibc_unlikely (fc == '\0')) + conv_error(); +#endif + + if (flags & LONG) + { + size_t now = read_in; +#ifdef COMPILE_WSCANF + if (__glibc_unlikely (inchar () == WEOF)) + input_error (); + + do + { + wchar_t *runp; + + /* Test whether it's in the scanlist. */ + runp = tw; + while (runp < twend) + { + if (runp[0] == L'-' && runp[1] != '\0' + && runp + 1 != twend + && 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 ((wint_t) wc == c) + break; + + if (wc <= runp[1] && !not_in) + break; + if (wc <= runp[1] && not_in) + { + /* The current character is not in the + scanset. */ + ungetc (c, s); + goto out; + } + + runp += 2; + } + else + { + if ((wint_t) *runp == c && !not_in) + break; + if ((wint_t) *runp == c && not_in) + { + ungetc (c, s); + goto out; + } + + ++runp; + } + } + + if (runp == twend && !not_in) + { + ungetc (c, s); + goto out; + } + + 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 + 1) + * sizeof (wchar_t)); + if (wstr == NULL) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* 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'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize *= 2; + } + } + } + } + while (--width > 0 && inchar () != WEOF); + out: +#else + char buf[MB_LEN_MAX]; + size_t cnt = 0; + mbstate_t cstate; + + if (__glibc_unlikely (inchar () == EOF)) + input_error (); + + memset (&cstate, '\0', sizeof (cstate)); + + do + { + if (((char *) charbuf.scratch.data)[c] == not_in) + { + ungetc_not_eof (c, s); + break; + } + + /* This is easy. */ + if (!(flags & SUPPRESS)) + { + size_t n; + + /* Convert it into a wide character. */ + buf[0] = c; + n = __mbrtowc (wstr, buf, 1, &cstate); + + if (n == (size_t) -2) + { + /* Possibly correct character, just not enough + input. */ + ++cnt; + assert (cnt < MB_LEN_MAX); + continue; + } + cnt = 0; + + ++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) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* 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'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + ++strsize; + } + } + else + { + *strptr = (char *) wstr; + wstr += strsize; + strsize *= 2; + } + } + } + + if (--width <= 0) + break; + } + while (inchar () != EOF); + + if (__glibc_unlikely (cnt != 0)) + /* We stopped in the middle of recognizing another + character. That's a problem. */ + encode_error (); +#endif + + if (__glibc_unlikely (now == read_in)) + /* We haven't succesfully read any character. */ + conv_error (); + + if (!(flags & SUPPRESS)) + { + *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; + } + strptr = NULL; + + ++done; + } + } + else + { + size_t now = read_in; + + if (__glibc_unlikely (inchar () == EOF)) + input_error (); + +#ifdef COMPILE_WSCANF + + memset (&state, '\0', sizeof (state)); + + do + { + wchar_t *runp; + size_t n; + + /* Test whether it's in the scanlist. */ + runp = tw; + while (runp < twend) + { + if (runp[0] == L'-' && runp[1] != '\0' + && runp + 1 != twend + && 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 ((wint_t) wc == c) + break; + + if (wc <= runp[1] && !not_in) + break; + if (wc <= runp[1] && not_in) + { + /* The current character is not in the + scanset. */ + ungetc (c, s); + goto out2; + } + + runp += 2; + } + else + { + if ((wint_t) *runp == c && !not_in) + break; + if ((wint_t) *runp == c && not_in) + { + ungetc (c, s); + goto out2; + } + + ++runp; + } + } + + if (runp == twend && !not_in) + { + ungetc (c, s); + goto out2; + } + + if (!(flags & SUPPRESS)) + { + if ((flags & MALLOC) + && *strptr + strsize - str <= MB_LEN_MAX) + { + /* Enlarge the buffer. */ + size_t strleng = str - *strptr; + char *newstr; + + newstr = (char *) realloc (*strptr, 2 * strsize); + if (newstr == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + newstr = (char *) realloc (*strptr, + strleng + MB_LEN_MAX); + if (newstr == NULL) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* We lose. Oh well. Terminate the string + and stop converting, so at least we don't + skip any input. */ + ((char *) (*strptr))[strleng] = '\0'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = newstr; + str = newstr + strleng; + strsize = strleng + MB_LEN_MAX; + } + } + else + { + *strptr = newstr; + str = newstr + strleng; + strsize *= 2; + } + } + } + + n = __wcrtomb (!(flags & SUPPRESS) ? str : NULL, c, &state); + if (__glibc_unlikely (n == (size_t) -1)) + encode_error (); + + assert (n <= MB_LEN_MAX); + str += n; + } + while (--width > 0 && inchar () != WEOF); + out2: +#else + do + { + if (((char *) charbuf.scratch.data)[c] == not_in) + { + ungetc_not_eof (c, s); + break; + } + + /* This is easy. */ + if (!(flags & SUPPRESS)) + { + *str++ = c; + if ((flags & MALLOC) + && (char *) str == *strptr + strsize) + { + /* Enlarge the buffer. */ + size_t newsize = 2 * strsize; + + allocagain: + str = (char *) realloc (*strptr, newsize); + if (str == NULL) + { + /* Can't allocate that much. Last-ditch + effort. */ + if (newsize > strsize + 1) + { + newsize = strsize + 1; + goto allocagain; + } + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* We lose. Oh well. Terminate the + string and stop converting, + so at least we don't skip any input. */ + ((char *) (*strptr))[strsize - 1] = '\0'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = (char *) str; + str += strsize; + strsize = newsize; + } + } + } + } + while (--width > 0 && inchar () != EOF); +#endif + + if (__glibc_unlikely (now == read_in)) + /* We haven't succesfully read any character. */ + conv_error (); + + if (!(flags & SUPPRESS)) + { +#ifdef COMPILE_WSCANF + /* We have to emit the code to get into the initial + 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. */ + size_t strleng = str - *strptr; + char *newstr; + + newstr = (char *) realloc (*strptr, strleng + n + 1); + if (newstr == NULL) + { + if (flags & POSIX_MALLOC) + { + done = EOF; + goto errout; + } + /* We lose. Oh well. Terminate the string + and stop converting, so at least we don't + skip any input. */ + ((char *) (*strptr))[strleng] = '\0'; + strptr = NULL; + ++done; + conv_error (); + } + else + { + *strptr = newstr; + str = newstr + strleng; + strsize = strleng + n + 1; + } + } + + 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; + } + strptr = NULL; + + ++done; + } + } + break; + + case L_('p'): /* Generic pointer. */ + base = 16; + /* A PTR must be the same size as a `long int'. */ + flags &= ~(SHORT|LONGDBL); + if (need_long) + flags |= LONG; + flags |= READ_POINTER; + goto number; + + default: + /* If this is an unknown format character punt. */ + conv_error (); + } + } + + /* The last thing we saw int the format string was a white space. + Consume the last white spaces. */ + if (skip_space) + { + do + c = inchar (); + while (ISSPACE (c)); + ungetc (c, s); + } + + errout: + /* Unlock stream. */ + UNLOCK_STREAM (s); + + scratch_buffer_free (&charbuf.scratch); + + if (__glibc_unlikely (done == EOF)) + { + if (__glibc_unlikely (ptrs_to_free != NULL)) + { + struct ptrs_to_free *p = ptrs_to_free; + while (p != NULL) + { + for (size_t cnt = 0; cnt < p->count; ++cnt) + { + free (*p->ptrs[cnt]); + *p->ptrs[cnt] = NULL; + } + p = p->next; + ptrs_to_free = p; + } + } + } + else if (__glibc_unlikely (strptr != NULL)) + { + free (*strptr); + *strptr = NULL; + } + return done; +} |