diff options
Diffstat (limited to 'stdio-common/vfscanf.c')
| -rw-r--r-- | stdio-common/vfscanf.c | 138 |
1 files changed, 65 insertions, 73 deletions
diff --git a/stdio-common/vfscanf.c b/stdio-common/vfscanf.c index dd635c9..8a799ac 100644 --- a/stdio-common/vfscanf.c +++ b/stdio-common/vfscanf.c @@ -35,13 +35,15 @@ Cambridge, MA 02139, USA. */ #endif /* Those are flags in the conversion format. */ -# define LONG 0x01 /* l: long or double */ -# define LONGDBL 0x02 /* L: long long or long double */ -# define SHORT 0x04 /* h: short */ -# define SUPPRESS 0x08 /* suppress assignment */ -# define POINTER 0x10 /* weird %p pointer (`fake hex') */ -# define NOSKIP 0x20 /* do not skip blanks */ -# define WIDTH 0x40 /* width */ +# define LONG 0x001 /* l: long or double */ +# define LONGDBL 0x002 /* L: long long or long double */ +# define SHORT 0x004 /* h: short */ +# define SUPPRESS 0x008 /* *: suppress assignment */ +# define POINTER 0x010 /* weird %p pointer (`fake hex') */ +# define NOSKIP 0x020 /* do not skip blanks */ +# define WIDTH 0x040 /* width was given */ +# define GROUP 0x080 /* ': group numbers */ +# define MALLOC 0x100 /* a: malloc strings */ #ifdef USE_IN_LIBIO @@ -108,20 +110,9 @@ __vfscanf (FILE *s, const char *format, va_list argptr) register size_t done = 0; /* Assignments done. */ register size_t read_in = 0; /* Chars read in. */ register int c; /* Last char read. */ - register int do_assign; /* Whether to do an assignment. */ register int width; /* Maximum field width. */ - int group_flag; /* %' modifier flag. */ - int flags; /* Trace flags for current format element. */ - - /* Type modifiers. */ - int is_short, is_long, is_long_double; -#ifdef HAVE_LONGLONG - /* We use the `L' modifier for `long long int'. */ -# define is_longlong is_long_double -#else -# define is_longlong 0 -#endif - int malloc_string; /* Args are char ** to be filled in. */ + register int flags; /* Modifiers for current format element. */ + /* Status for reading F-P nums. */ char got_dot, got_e; /* If a [...] is a [^...]. */ @@ -132,6 +123,8 @@ __vfscanf (FILE *s, const char *format, va_list argptr) int number_signed; /* Decimal point character. */ wchar_t decimal; + /* The thousands character of the current locale. */ + wchar_t thousands; /* Integral holding variables. */ union { @@ -173,6 +166,10 @@ __vfscanf (FILE *s, const char *format, va_list argptr) if (mbtowc (&decimal, _NL_CURRENT (LC_NUMERIC, DECIMAL_POINT), strlen (_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT))) <= 0) decimal = (wchar_t) *_NL_CURRENT (LC_NUMERIC, DECIMAL_POINT); + /* Figure out the thousands separator character. */ + if (mbtowc (&thousands, _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP), + strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0) + thousands = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP); c = inchar (); @@ -255,9 +252,6 @@ __vfscanf (FILE *s, const char *format, va_list argptr) /* Initialize state of modifiers. */ argpos = 0; - do_assign = 1; - group_flag = 0; - is_short = is_long = is_long_double = malloc_string = 0; /* Prepare temporary buffer. */ wpsize = 0; @@ -274,6 +268,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) { /* Oops; that was actually the field width. */ width = argpos; + flags |= WIDTH; argpos = 0; goto got_width; } @@ -284,11 +279,10 @@ __vfscanf (FILE *s, const char *format, va_list argptr) switch (*f++) { case '*': - flags = SUPPRESS; - do_assign = 0; + flags |= SUPPRESS; break; case '\'': - group_flag = 1; + flags |= GROUP; break; } @@ -313,42 +307,36 @@ __vfscanf (FILE *s, const char *format, va_list argptr) { case 'h': /* int's are short int's. */ - if (flags & ~(SUPPRESS | WIDTH)) + if (flags & (LONG|LONGDBL)) /* Signal illegal format element. */ conv_error (); flags |= SHORT; - is_short = 1; break; case 'l': - if (is_long) + if (flags & SHORT) + conv_error (); + else if (flags & LONG) { /* A double `l' is equivalent to an `L'. */ - if ((flags & ~(SUPPRESS | WIDTH))) - conv_error (); flags &= ~LONG; flags |= LONGDBL; - is_longlong = 1; } else - { - /* int's are long int's. */ - flags |= LONG; - is_long = 1; - } + /* int's are long int's. */ + flags |= LONG; break; case 'q': case 'L': /* double's are long double's, and int's are long long int's. */ - if (flags & ~(SUPPRESS | WIDTH)) + if (flags & (LONG|SHORT)) /* Signal illegal format element. */ conv_error (); flags |= LONGDBL; - is_long_double = 1; break; case 'a': /* String conversions (%s, %[) take a `char **' arg and fill it in with a malloc'd pointer. */ - malloc_string = 1; + flags |= MALLOC; break; } @@ -375,12 +363,12 @@ __vfscanf (FILE *s, const char *format, va_list argptr) break; case 'n': /* Answer number of assignments done. */ - if (do_assign) + if (!(flags & SUPPRESS)) *ARG (int *) = read_in - 1; /* Don't count the read-ahead. */ break; case 'c': /* Match characters. */ - if (do_assign) + if (!(flags & SUPPRESS)) { str = ARG (char *); if (str == NULL) @@ -393,7 +381,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) if (width == -1) width = 1; - if (do_assign) + if (!(flags & SUPPRESS)) { do *str++ = c; @@ -402,16 +390,16 @@ __vfscanf (FILE *s, const char *format, va_list argptr) else while (inchar () != EOF && --width > 0); - if (do_assign) + if (!(flags & SUPPRESS)) ++done; break; case 's': /* Read a string. */ #define STRING_ARG \ - if (do_assign) \ + if (!(flags & SUPPRESS)) \ { \ - if (malloc_string) \ + if (flags & MALLOC) \ { \ /* The string is to be stored in a malloc'd buffer. */ \ strptr = ARG (char **); \ @@ -436,10 +424,10 @@ __vfscanf (FILE *s, const char *format, va_list argptr) if (isspace (c)) break; #define STRING_ADD_CHAR(c) \ - if (do_assign) \ + if (!(flags & SUPPRESS)) \ { \ *str++ = c; \ - if (malloc_string && str == *strptr + strsize) \ + if ((flags & MALLOC) && str == *strptr + strsize) \ { \ /* Enlarge the buffer. */ \ str = realloc (*strptr, strsize * 2); \ @@ -474,7 +462,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) STRING_ADD_CHAR (c); } while (inchar () != EOF && (width <= 0 || --width > 0)); - if (do_assign) + if (!(flags & SUPPRESS)) { *str = '\0'; ++done; @@ -550,7 +538,8 @@ __vfscanf (FILE *s, const char *format, va_list argptr) while (c != EOF && width != 0) { if (base == 16 ? !isxdigit (c) : - (!isdigit (c) || c - '0' >= base)) + ((!isdigit (c) || c - '0' >= base) && + !((flags & GROUP) && base == 10 && c == thousands))) break; ADDW (c); if (width > 0) @@ -566,32 +555,32 @@ __vfscanf (FILE *s, const char *format, va_list argptr) /* Convert the number. */ ADDW ('\0'); - if (is_longlong) + if (flags & LONGDBL) { if (number_signed) - num.q = __strtoq_internal (wp, &tw, base, group_flag); + num.q = __strtoq_internal (wp, &tw, base, flags & GROUP); else - num.uq = __strtouq_internal (wp, &tw, base, group_flag); + num.uq = __strtouq_internal (wp, &tw, base, flags & GROUP); } else { if (number_signed) - num.l = __strtol_internal (wp, &tw, base, group_flag); + num.l = __strtol_internal (wp, &tw, base, flags & GROUP); else - num.ul = __strtoul_internal (wp, &tw, base, group_flag); + num.ul = __strtoul_internal (wp, &tw, base, flags & GROUP); } if (wp == tw) conv_error (); - if (do_assign) + if (!(flags & SUPPRESS)) { if (! number_signed) { - if (is_longlong) + if (flags & LONGDBL) *ARG (unsigned LONGLONG int *) = num.uq; - else if (is_long) + else if (flags & LONG) *ARG (unsigned long int *) = num.ul; - else if (is_short) + else if (flags & SHORT) *ARG (unsigned short int *) = (unsigned short int) num.ul; else @@ -599,11 +588,11 @@ __vfscanf (FILE *s, const char *format, va_list argptr) } else { - if (is_longlong) + if (flags & LONGDBL) *ARG (LONGLONG int *) = num.q; - else if (is_long) + else if (flags & LONG) *ARG (long int *) = num.l; - else if (is_short) + else if (flags & SHORT) *ARG (short int *) = (short int) num.l; else *ARG (int *) = (int) num.l; @@ -649,6 +638,8 @@ __vfscanf (FILE *s, const char *format, va_list argptr) ADDW (c); got_dot = 1; } + else if ((flags & GROUP) && c == thousands && !got_dot) + ADDW (c); else break; if (width > 0) @@ -663,29 +654,29 @@ __vfscanf (FILE *s, const char *format, va_list argptr) /* Convert the number. */ ADDW ('\0'); - if (is_long_double) + if (flags & LONGDBL) { - long double d = __strtold_internal (wp, &tw, group_flag); - if (do_assign && tw != wp) + long double d = __strtold_internal (wp, &tw, flags & GROUP); + if (!(flags & SUPPRESS) && tw != wp) *ARG (long double *) = d; } - else if (is_long) + else if (flags & LONG) { - double d = __strtod_internal (wp, &tw, group_flag); - if (do_assign && tw != wp) + double d = __strtod_internal (wp, &tw, flags & GROUP); + if (!(flags & SUPPRESS) && tw != wp) *ARG (double *) = d; } else { - float d = __strtof_internal (wp, &tw, group_flag); - if (do_assign && tw != wp) + float d = __strtof_internal (wp, &tw, flags & GROUP); + if (!(flags & SUPPRESS) && tw != wp) *ARG (float *) = d; } if (tw == wp) conv_error (); - if (do_assign) + if (!(flags & SUPPRESS)) ++done; break; @@ -751,7 +742,7 @@ __vfscanf (FILE *s, const char *format, va_list argptr) if (read_in == num.ul) conv_error (); - if (do_assign) + if (!(flags & SUPPRESS)) { *str = '\0'; ++done; @@ -761,7 +752,8 @@ __vfscanf (FILE *s, const char *format, va_list argptr) case 'p': /* Generic pointer. */ base = 16; /* A PTR must be the same size as a `long int'. */ - is_long = 1; + flags &= ~(SHORT|LONGDBL); + flags |= LONG; number_signed = 0; goto number; } |