summaryrefslogtreecommitdiff
path: root/libc/stdio/vfwscanf.c
diff options
context:
space:
mode:
Diffstat (limited to 'libc/stdio/vfwscanf.c')
-rw-r--r--libc/stdio/vfwscanf.c1228
1 files changed, 587 insertions, 641 deletions
diff --git a/libc/stdio/vfwscanf.c b/libc/stdio/vfwscanf.c
index a05fffe006..c74c6e7c8c 100644
--- a/libc/stdio/vfwscanf.c
+++ b/libc/stdio/vfwscanf.c
@@ -44,54 +44,54 @@
#include "floatio.h"
-#define BUF 513 /* Maximum length of numeric string. */
+#define BUF 513 /* Maximum length of numeric string. */
/*
* Flags used during conversion.
*/
-#define LONG 0x00001 /* l: long or double */
-#define LONGDBL 0x00002 /* L: long double */
-#define SHORT 0x00004 /* h: short */
-#define SHORTSHORT 0x00008 /* hh: 8 bit integer */
-#define LLONG 0x00010 /* ll: long long (+ deprecated q: quad) */
-#define POINTER 0x00020 /* p: void * (as hex) */
-#define SIZEINT 0x00040 /* z: (signed) size_t */
-#define MAXINT 0x00080 /* j: intmax_t */
-#define PTRINT 0x00100 /* t: ptrdiff_t */
-#define NOSKIP 0x00200 /* [ or c: do not skip blanks */
-#define SUPPRESS 0x00400 /* *: suppress assignment */
-#define UNSIGNED 0x00800 /* %[oupxX] conversions */
+#define LONG 0x00001 /* l: long or double */
+#define LONGDBL 0x00002 /* L: long double */
+#define SHORT 0x00004 /* h: short */
+#define SHORTSHORT 0x00008 /* hh: 8 bit integer */
+#define LLONG 0x00010 /* ll: long long (+ deprecated q: quad) */
+#define POINTER 0x00020 /* p: void * (as hex) */
+#define SIZEINT 0x00040 /* z: (signed) size_t */
+#define MAXINT 0x00080 /* j: intmax_t */
+#define PTRINT 0x00100 /* t: ptrdiff_t */
+#define NOSKIP 0x00200 /* [ or c: do not skip blanks */
+#define SUPPRESS 0x00400 /* *: suppress assignment */
+#define UNSIGNED 0x00800 /* %[oupxX] conversions */
/*
* The following are used in numeric conversions only:
* SIGNOK, HAVESIGN, NDIGITS, DPTOK, and EXPOK are for floating point;
* SIGNOK, HAVESIGN, NDIGITS, PFXOK, and NZDIGITS are for integral.
*/
-#define SIGNOK 0x01000 /* +/- is (still) legal */
-#define HAVESIGN 0x02000 /* sign detected */
-#define NDIGITS 0x04000 /* no digits detected */
+#define SIGNOK 0x01000 /* +/- is (still) legal */
+#define HAVESIGN 0x02000 /* sign detected */
+#define NDIGITS 0x04000 /* no digits detected */
-#define DPTOK 0x08000 /* (float) decimal point is still legal */
-#define EXPOK 0x10000 /* (float) exponent (e+3, etc) still legal */
+#define DPTOK 0x08000 /* (float) decimal point is still legal */
+#define EXPOK 0x10000 /* (float) exponent (e+3, etc) still legal */
-#define PFXOK 0x08000 /* 0x prefix is (still) legal */
-#define NZDIGITS 0x10000 /* no zero digits detected */
+#define PFXOK 0x08000 /* 0x prefix is (still) legal */
+#define NZDIGITS 0x10000 /* no zero digits detected */
/*
* Conversion types.
*/
-#define CT_CHAR 0 /* %c conversion */
-#define CT_CCL 1 /* %[...] conversion */
-#define CT_STRING 2 /* %s conversion */
-#define CT_INT 3 /* integer, i.e., strtoimax or strtoumax */
-#define CT_FLOAT 4 /* floating, i.e., strtod */
+#define CT_CHAR 0 /* %c conversion */
+#define CT_CCL 1 /* %[...] conversion */
+#define CT_STRING 2 /* %s conversion */
+#define CT_INT 3 /* integer, i.e., strtoimax or strtoumax */
+#define CT_FLOAT 4 /* floating, i.e., strtod */
#define u_char unsigned char
#define u_long unsigned long
-#define INCCL(_c) \
- (cclcompl ? (wmemchr(ccls, (_c), ccle - ccls) == NULL) : \
- (wmemchr(ccls, (_c), ccle - ccls) != NULL))
+#define INCCL(_c) \
+ (cclcompl ? (wmemchr(ccls, (_c), ccle - ccls) == NULL) \
+ : (wmemchr(ccls, (_c), ccle - ccls) != NULL))
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wframe-larger-than="
@@ -99,623 +99,569 @@
/*
* vfwscanf
*/
-int
-__vfwscanf(FILE * __restrict fp, const wchar_t * __restrict fmt, __va_list ap)
-{
- wint_t c; /* character from format, or conversion */
- size_t width; /* field width, or 0 */
- wchar_t *p; /* points into all kinds of strings */
- int n; /* handy integer */
- int flags; /* flags as defined above */
- wchar_t *p0; /* saves original value of p when necessary */
- int nassigned; /* number of fields assigned */
- int nconversions; /* number of conversions */
- int nread; /* number of characters consumed from fp */
- int base; /* base argument to strtoimax/strtouimax */
- wchar_t buf[BUF]; /* buffer for numeric conversions */
- const wchar_t *ccls; /* character class start */
- const wchar_t *ccle; /* character class end */
- int cclcompl; /* ccl is complemented? */
- wint_t wi; /* handy wint_t */
- char *mbp; /* multibyte string pointer for %c %s %[ */
- size_t nconv; /* number of bytes in mb. conversion */
- char mbbuf[MB_LEN_MAX]; /* temporary mb. character buffer */
- mbstate_t mbs;
-
- /* `basefix' is used to avoid `if' tests in the integer scanner */
- static short basefix[17] =
- { 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
-
- _SET_ORIENTATION(fp, 1);
-
- nassigned = 0;
- nconversions = 0;
- nread = 0;
- base = 0; /* XXX just to keep gcc happy */
- ccls = ccle = NULL;
- for (;;) {
- c = *fmt++;
- if (c == 0) {
- return (nassigned);
- }
- if (iswspace(c)) {
- while ((c = __fgetwc_unlock(fp)) != WEOF &&
- iswspace(c))
- ;
- if (c != WEOF)
- __ungetwc(c, fp);
- continue;
- }
- if (c != '%')
- goto literal;
- width = 0;
- flags = 0;
- /*
- * switch on the format. continue if done;
- * break once format type is derived.
- */
-again: c = *fmt++;
- switch (c) {
- case '%':
-literal:
- if ((wi = __fgetwc_unlock(fp)) == WEOF)
- goto input_failure;
- if (wi != c) {
- __ungetwc(wi, fp);
- goto input_failure;
- }
- nread++;
- continue;
-
- case '*':
- flags |= SUPPRESS;
- goto again;
- case 'j':
- flags |= MAXINT;
- goto again;
- case 'L':
- flags |= LONGDBL;
- goto again;
- case 'h':
- if (*fmt == 'h') {
- fmt++;
- flags |= SHORTSHORT;
- } else {
- flags |= SHORT;
- }
- goto again;
- case 'l':
- if (*fmt == 'l') {
- fmt++;
- flags |= LLONG;
- } else {
- flags |= LONG;
- }
- goto again;
- case 'q':
- flags |= LLONG; /* deprecated */
- goto again;
- case 't':
- flags |= PTRINT;
- goto again;
- case 'z':
- flags |= SIZEINT;
- goto again;
-
- case '0': case '1': case '2': case '3': case '4':
- case '5': case '6': case '7': case '8': case '9':
- width = width * 10 + c - '0';
- goto again;
-
- /*
- * Conversions.
- * Those marked `compat' are for 4.[123]BSD compatibility.
- *
- * (According to ANSI, E and X formats are supposed
- * to the same as e and x. Sorry about that.)
- */
- case 'D': /* compat */
- flags |= LONG;
- /* FALLTHROUGH */
- case 'd':
- c = CT_INT;
- base = 10;
- break;
-
- case 'i':
- c = CT_INT;
- base = 0;
- break;
-
- case 'O': /* compat */
- flags |= LONG;
- /* FALLTHROUGH */
- case 'o':
- c = CT_INT;
- flags |= UNSIGNED;
- base = 8;
- break;
-
- case 'u':
- c = CT_INT;
- flags |= UNSIGNED;
- base = 10;
- break;
-
- case 'X':
- case 'x':
- flags |= PFXOK; /* enable 0x prefixing */
- c = CT_INT;
- flags |= UNSIGNED;
- base = 16;
- break;
-
- case 'e': case 'E':
- case 'f': case 'F':
- case 'g': case 'G':
- case 'a': case 'A':
- c = CT_FLOAT;
- break;
-
- case 's':
- c = CT_STRING;
- break;
-
- case '[':
- ccls = fmt;
- if (*fmt == '^') {
- cclcompl = 1;
- fmt++;
- } else
- cclcompl = 0;
- if (*fmt == ']')
- fmt++;
- while (*fmt != '\0' && *fmt != ']')
- fmt++;
- ccle = fmt;
- fmt++;
- flags |= NOSKIP;
- c = CT_CCL;
- break;
-
- case 'c':
- flags |= NOSKIP;
- c = CT_CHAR;
- break;
-
- case 'p': /* pointer format is like hex */
- flags |= POINTER | PFXOK;
- c = CT_INT;
- flags |= UNSIGNED;
- base = 16;
- break;
-
- case 'n':
- nconversions++;
- if (flags & SUPPRESS)
- continue;
- if (flags & SHORTSHORT)
- *va_arg(ap, signed char *) = nread;
- else if (flags & SHORT)
- *va_arg(ap, short *) = nread;
- else if (flags & LONG)
- *va_arg(ap, long *) = nread;
- else if (flags & SIZEINT)
- *va_arg(ap, ssize_t *) = nread;
- else if (flags & PTRINT)
- *va_arg(ap, ptrdiff_t *) = nread;
- else if (flags & LLONG)
- *va_arg(ap, long long *) = nread;
- else if (flags & MAXINT)
- *va_arg(ap, intmax_t *) = nread;
- else
- *va_arg(ap, int *) = nread;
- continue;
-
- /*
- * Disgusting backwards compatibility hacks. XXX
- */
- case '\0': /* compat */
- return (EOF);
-
- default: /* compat */
- if (iswupper(c))
- flags |= LONG;
- c = CT_INT;
- base = 10;
- break;
- }
-
- /*
- * Consume leading white space, except for formats
- * that suppress this.
- */
- if ((flags & NOSKIP) == 0) {
- while ((wi = __fgetwc_unlock(fp)) != WEOF &&
- iswspace(wi))
- nread++;
- if (wi == WEOF)
- goto input_failure;
- __ungetwc(wi, fp);
- }
-
- /*
- * Do the conversion.
- */
- switch (c) {
-
- case CT_CHAR:
- /* scan arbitrary characters (sets NOSKIP) */
- if (width == 0)
- width = 1;
- if (flags & LONG) {
- if (!(flags & SUPPRESS))
- p = va_arg(ap, wchar_t *);
- n = 0;
- while (width-- != 0 &&
- (wi = __fgetwc_unlock(fp)) != WEOF) {
- if (!(flags & SUPPRESS))
- *p++ = (wchar_t)wi;
- n++;
- }
- if (n == 0)
- goto input_failure;
- nread += n;
- if (!(flags & SUPPRESS))
- nassigned++;
- } else {
- if (!(flags & SUPPRESS))
- mbp = va_arg(ap, char *);
- n = 0;
- memset(&mbs, 0, sizeof(mbs));
- while (width != 0 &&
- (wi = __fgetwc_unlock(fp)) != WEOF) {
- if (width >= MB_CUR_MAX &&
- !(flags & SUPPRESS)) {
- nconv = wcrtomb(mbp, wi, &mbs);
- if (nconv == (size_t)-1)
- goto input_failure;
- } else {
- nconv = wcrtomb(mbbuf, wi,
- &mbs);
- if (nconv == (size_t)-1)
- goto input_failure;
- if (nconv > width) {
- __ungetwc(wi, fp);
- break;
- }
- if (!(flags & SUPPRESS))
- memcpy(mbp, mbbuf,
- nconv);
- }
- if (!(flags & SUPPRESS))
- mbp += nconv;
- width -= nconv;
- n++;
- }
- if (n == 0)
- goto input_failure;
- nread += n;
- if (!(flags & SUPPRESS))
- nassigned++;
- }
- nconversions++;
- break;
-
- case CT_CCL:
- /* scan a (nonempty) character class (sets NOSKIP) */
- if (width == 0)
- width = (size_t)~0; /* `infinity' */
- /* take only those things in the class */
- if ((flags & SUPPRESS) && (flags & LONG)) {
- n = 0;
- while ((wi = __fgetwc_unlock(fp)) != WEOF &&
- width-- != 0 && INCCL(wi))
- n++;
- if (wi != WEOF)
- __ungetwc(wi, fp);
- if (n == 0)
- goto match_failure;
- } else if (flags & LONG) {
- p0 = p = va_arg(ap, wchar_t *);
- while ((wi = __fgetwc_unlock(fp)) != WEOF &&
- width-- != 0 && INCCL(wi))
- *p++ = (wchar_t)wi;
- if (wi != WEOF)
- __ungetwc(wi, fp);
- n = p - p0;
- if (n == 0)
- goto match_failure;
- *p = 0;
- nassigned++;
- } else {
- if (!(flags & SUPPRESS))
- mbp = va_arg(ap, char *);
- n = 0;
- memset(&mbs, 0, sizeof(mbs));
- while ((wi = __fgetwc_unlock(fp)) != WEOF &&
- width != 0 && INCCL(wi)) {
- if (width >= MB_CUR_MAX &&
- !(flags & SUPPRESS)) {
- nconv = wcrtomb(mbp, wi, &mbs);
- if (nconv == (size_t)-1)
- goto input_failure;
- } else {
- nconv = wcrtomb(mbbuf, wi,
- &mbs);
- if (nconv == (size_t)-1)
- goto input_failure;
- if (nconv > width)
- break;
- if (!(flags & SUPPRESS))
- memcpy(mbp, mbbuf,
- nconv);
- }
- if (!(flags & SUPPRESS))
- mbp += nconv;
- width -= nconv;
- n++;
- }
- if (wi != WEOF)
- __ungetwc(wi, fp);
- if (!(flags & SUPPRESS)) {
- *mbp = 0;
- nassigned++;
- }
- }
- nread += n;
- nconversions++;
- break;
-
- case CT_STRING:
- /* like CCL, but zero-length string OK, & no NOSKIP */
- if (width == 0)
- width = (size_t)~0;
- if ((flags & SUPPRESS) && (flags & LONG)) {
- while ((wi = __fgetwc_unlock(fp)) != WEOF &&
- width-- != 0 &&
- !iswspace(wi))
- nread++;
- if (wi != WEOF)
- __ungetwc(wi, fp);
- } else if (flags & LONG) {
- p0 = p = va_arg(ap, wchar_t *);
- while ((wi = __fgetwc_unlock(fp)) != WEOF &&
- width-- != 0 &&
- !iswspace(wi)) {
- *p++ = (wchar_t)wi;
- nread++;
- }
- if (wi != WEOF)
- __ungetwc(wi, fp);
- *p = 0;
- nassigned++;
- } else {
- if (!(flags & SUPPRESS))
- mbp = va_arg(ap, char *);
- memset(&mbs, 0, sizeof(mbs));
- while ((wi = __fgetwc_unlock(fp)) != WEOF &&
- width != 0 &&
- !iswspace(wi)) {
- if (width >= MB_CUR_MAX &&
- !(flags & SUPPRESS)) {
- nconv = wcrtomb(mbp, wi, &mbs);
- if (nconv == (size_t)-1)
- goto input_failure;
- } else {
- nconv = wcrtomb(mbbuf, wi,
- &mbs);
- if (nconv == (size_t)-1)
- goto input_failure;
- if (nconv > width)
- break;
- if (!(flags & SUPPRESS))
- memcpy(mbp, mbbuf,
- nconv);
- }
- if (!(flags & SUPPRESS))
- mbp += nconv;
- width -= nconv;
- nread++;
- }
- if (wi != WEOF)
- __ungetwc(wi, fp);
- if (!(flags & SUPPRESS)) {
- *mbp = 0;
- nassigned++;
- }
- }
- nconversions++;
- continue;
-
- case CT_INT:
- /* scan an integer as if by strtoimax/strtoumax */
- if (width == 0 || width > sizeof(buf) /
- sizeof(*buf) - 1)
- width = sizeof(buf) / sizeof(*buf) - 1;
- flags |= SIGNOK | NDIGITS | NZDIGITS;
- for (p = buf; width; width--) {
- c = __fgetwc_unlock(fp);
- /*
- * Switch on the character; `goto ok'
- * if we accept it as a part of number.
- */
- switch (c) {
-
- /*
- * The digit 0 is always legal, but is
- * special. For %i conversions, if no
- * digits (zero or nonzero) have been
- * scanned (only signs), we will have
- * base==0. In that case, we should set
- * it to 8 and enable 0x prefixing.
- * Also, if we have not scanned zero digits
- * before this, do not turn off prefixing
- * (someone else will turn it off if we
- * have scanned any nonzero digits).
- */
- case '0':
- if (base == 0) {
- base = 8;
- flags |= PFXOK;
- }
- if (flags & NZDIGITS)
- flags &= ~(SIGNOK|NZDIGITS|NDIGITS);
- else
- flags &= ~(SIGNOK|PFXOK|NDIGITS);
- goto ok;
-
- /* 1 through 7 always legal */
- case '1': case '2': case '3':
- case '4': case '5': case '6': case '7':
- base = basefix[base];
- flags &= ~(SIGNOK | PFXOK | NDIGITS);
- goto ok;
-
- /* digits 8 and 9 ok iff decimal or hex */
- case '8': case '9':
- base = basefix[base];
- if (base <= 8)
- break; /* not legal here */
- flags &= ~(SIGNOK | PFXOK | NDIGITS);
- goto ok;
-
- /* letters ok iff hex */
- case 'A': case 'B': case 'C':
- case 'D': case 'E': case 'F':
- case 'a': case 'b': case 'c':
- case 'd': case 'e': case 'f':
- /* no need to fix base here */
- if (base <= 10)
- break; /* not legal here */
- flags &= ~(SIGNOK | PFXOK | NDIGITS);
- goto ok;
-
- /* sign ok only as first character */
- case '+': case '-':
- if (flags & SIGNOK) {
- flags &= ~SIGNOK;
- flags |= HAVESIGN;
- goto ok;
- }
- break;
-
- /*
- * x ok iff flag still set and 2nd char (or
- * 3rd char if we have a sign).
- */
- case 'x': case 'X':
- if ((flags & PFXOK) && p ==
- buf + 1 + !!(flags & HAVESIGN)) {
- base = 16; /* if %i */
- flags &= ~PFXOK;
- goto ok;
- }
- break;
- }
-
- /*
- * If we got here, c is not a legal character
- * for a number. Stop accumulating digits.
- */
- if (c != WEOF)
- __ungetwc(c, fp);
- break;
- ok:
- /*
- * c is legal: store it and look at the next.
- */
- *p++ = (wchar_t)c;
- }
- /*
- * If we had only a sign, it is no good; push
- * back the sign. If the number ends in `x',
- * it was [sign] '0' 'x', so push back the x
- * and treat it as [sign] '0'.
- */
- if (flags & NDIGITS) {
- if (p > buf)
- __ungetwc(*--p, fp);
- goto match_failure;
- }
- c = p[-1];
- if (c == 'x' || c == 'X') {
- --p;
- __ungetwc(c, fp);
- }
- if ((flags & SUPPRESS) == 0) {
- uintmax_t res;
-
- *p = '\0';
- if (flags & UNSIGNED)
- res = wcstoimax(buf, NULL, base);
- else
- res = wcstoumax(buf, NULL, base);
- if (flags & POINTER)
- *va_arg(ap, void **) =
- (void *)(uintptr_t)res;
- else if (flags & MAXINT)
- *va_arg(ap, intmax_t *) = res;
- else if (flags & LLONG)
- *va_arg(ap, long long *) = res;
- else if (flags & SIZEINT)
- *va_arg(ap, ssize_t *) = res;
- else if (flags & PTRINT)
- *va_arg(ap, ptrdiff_t *) = res;
- else if (flags & LONG)
- *va_arg(ap, long *) = res;
- else if (flags & SHORT)
- *va_arg(ap, short *) = res;
- else if (flags & SHORTSHORT)
- *va_arg(ap, signed char *) = res;
- else
- *va_arg(ap, int *) = res;
- nassigned++;
- }
- nread += p - buf;
- nconversions++;
- break;
-
- case CT_FLOAT:
- /* scan a floating point number as if by strtod */
- if (width == 0 || width > sizeof(buf) /
- sizeof(*buf) - 1)
- width = sizeof(buf) / sizeof(*buf) - 1;
- if ((width = wparsefloat(fp, buf, buf + width)) == 0)
- goto match_failure;
- if ((flags & SUPPRESS) == 0) {
- if (flags & LONGDBL) {
- long double res = wcstold(buf, &p);
- *va_arg(ap, long double *) = res;
- } else if (flags & LONG) {
- double res = wcstod(buf, &p);
- *va_arg(ap, double *) = res;
- } else {
- float res = wcstof(buf, &p);
- *va_arg(ap, float *) = res;
- }
- if (p - buf != (ptrdiff_t)width) abort();
- nassigned++;
- }
- nread += width;
- nconversions++;
- break;
- }
- }
+int __vfwscanf(FILE* __restrict fp, const wchar_t* __restrict fmt, __va_list ap) {
+ wint_t c; /* character from format, or conversion */
+ size_t width; /* field width, or 0 */
+ wchar_t* p; /* points into all kinds of strings */
+ int n; /* handy integer */
+ int flags; /* flags as defined above */
+ wchar_t* p0; /* saves original value of p when necessary */
+ int nassigned; /* number of fields assigned */
+ int nconversions; /* number of conversions */
+ int nread; /* number of characters consumed from fp */
+ int base; /* base argument to strtoimax/strtouimax */
+ wchar_t buf[BUF]; /* buffer for numeric conversions */
+ const wchar_t* ccls; /* character class start */
+ const wchar_t* ccle; /* character class end */
+ int cclcompl; /* ccl is complemented? */
+ wint_t wi; /* handy wint_t */
+ char* mbp; /* multibyte string pointer for %c %s %[ */
+ size_t nconv; /* number of bytes in mb. conversion */
+ char mbbuf[MB_LEN_MAX]; /* temporary mb. character buffer */
+ mbstate_t mbs;
+
+ /* `basefix' is used to avoid `if' tests in the integer scanner */
+ static short basefix[17] = { 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
+
+ _SET_ORIENTATION(fp, 1);
+
+ nassigned = 0;
+ nconversions = 0;
+ nread = 0;
+ base = 0; /* XXX just to keep gcc happy */
+ ccls = ccle = NULL;
+ for (;;) {
+ c = *fmt++;
+ if (c == 0) {
+ return (nassigned);
+ }
+ if (iswspace(c)) {
+ while ((c = __fgetwc_unlock(fp)) != WEOF && iswspace(c))
+ ;
+ if (c != WEOF) __ungetwc(c, fp);
+ continue;
+ }
+ if (c != '%') goto literal;
+ width = 0;
+ flags = 0;
+ /*
+ * switch on the format. continue if done;
+ * break once format type is derived.
+ */
+ again:
+ c = *fmt++;
+ switch (c) {
+ case '%':
+ literal:
+ if ((wi = __fgetwc_unlock(fp)) == WEOF) goto input_failure;
+ if (wi != c) {
+ __ungetwc(wi, fp);
+ goto input_failure;
+ }
+ nread++;
+ continue;
+
+ case '*':
+ flags |= SUPPRESS;
+ goto again;
+ case 'j':
+ flags |= MAXINT;
+ goto again;
+ case 'L':
+ flags |= LONGDBL;
+ goto again;
+ case 'h':
+ if (*fmt == 'h') {
+ fmt++;
+ flags |= SHORTSHORT;
+ } else {
+ flags |= SHORT;
+ }
+ goto again;
+ case 'l':
+ if (*fmt == 'l') {
+ fmt++;
+ flags |= LLONG;
+ } else {
+ flags |= LONG;
+ }
+ goto again;
+ case 'q':
+ flags |= LLONG; /* deprecated */
+ goto again;
+ case 't':
+ flags |= PTRINT;
+ goto again;
+ case 'z':
+ flags |= SIZEINT;
+ goto again;
+
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ width = width * 10 + c - '0';
+ goto again;
+
+ /*
+ * Conversions.
+ * Those marked `compat' are for 4.[123]BSD compatibility.
+ *
+ * (According to ANSI, E and X formats are supposed
+ * to the same as e and x. Sorry about that.)
+ */
+ case 'D': /* compat */
+ flags |= LONG;
+ /* FALLTHROUGH */
+ case 'd':
+ c = CT_INT;
+ base = 10;
+ break;
+
+ case 'i':
+ c = CT_INT;
+ base = 0;
+ break;
+
+ case 'O': /* compat */
+ flags |= LONG;
+ /* FALLTHROUGH */
+ case 'o':
+ c = CT_INT;
+ flags |= UNSIGNED;
+ base = 8;
+ break;
+
+ case 'u':
+ c = CT_INT;
+ flags |= UNSIGNED;
+ base = 10;
+ break;
+
+ case 'X':
+ case 'x':
+ flags |= PFXOK; /* enable 0x prefixing */
+ c = CT_INT;
+ flags |= UNSIGNED;
+ base = 16;
+ break;
+
+ case 'e':
+ case 'E':
+ case 'f':
+ case 'F':
+ case 'g':
+ case 'G':
+ case 'a':
+ case 'A':
+ c = CT_FLOAT;
+ break;
+
+ case 's':
+ c = CT_STRING;
+ break;
+
+ case '[':
+ ccls = fmt;
+ if (*fmt == '^') {
+ cclcompl = 1;
+ fmt++;
+ } else
+ cclcompl = 0;
+ if (*fmt == ']') fmt++;
+ while (*fmt != '\0' && *fmt != ']') fmt++;
+ ccle = fmt;
+ fmt++;
+ flags |= NOSKIP;
+ c = CT_CCL;
+ break;
+
+ case 'c':
+ flags |= NOSKIP;
+ c = CT_CHAR;
+ break;
+
+ case 'p': /* pointer format is like hex */
+ flags |= POINTER | PFXOK;
+ c = CT_INT;
+ flags |= UNSIGNED;
+ base = 16;
+ break;
+
+ case 'n':
+ nconversions++;
+ if (flags & SUPPRESS) continue;
+ if (flags & SHORTSHORT)
+ *va_arg(ap, signed char*) = nread;
+ else if (flags & SHORT)
+ *va_arg(ap, short*) = nread;
+ else if (flags & LONG)
+ *va_arg(ap, long*) = nread;
+ else if (flags & SIZEINT)
+ *va_arg(ap, ssize_t*) = nread;
+ else if (flags & PTRINT)
+ *va_arg(ap, ptrdiff_t*) = nread;
+ else if (flags & LLONG)
+ *va_arg(ap, long long*) = nread;
+ else if (flags & MAXINT)
+ *va_arg(ap, intmax_t*) = nread;
+ else
+ *va_arg(ap, int*) = nread;
+ continue;
+
+ /*
+ * Disgusting backwards compatibility hacks. XXX
+ */
+ case '\0': /* compat */
+ return (EOF);
+
+ default: /* compat */
+ if (iswupper(c)) flags |= LONG;
+ c = CT_INT;
+ base = 10;
+ break;
+ }
+
+ /*
+ * Consume leading white space, except for formats
+ * that suppress this.
+ */
+ if ((flags & NOSKIP) == 0) {
+ while ((wi = __fgetwc_unlock(fp)) != WEOF && iswspace(wi)) nread++;
+ if (wi == WEOF) goto input_failure;
+ __ungetwc(wi, fp);
+ }
+
+ /*
+ * Do the conversion.
+ */
+ switch (c) {
+ case CT_CHAR:
+ /* scan arbitrary characters (sets NOSKIP) */
+ if (width == 0) width = 1;
+ if (flags & LONG) {
+ if (!(flags & SUPPRESS)) p = va_arg(ap, wchar_t*);
+ n = 0;
+ while (width-- != 0 && (wi = __fgetwc_unlock(fp)) != WEOF) {
+ if (!(flags & SUPPRESS)) *p++ = (wchar_t)wi;
+ n++;
+ }
+ if (n == 0) goto input_failure;
+ nread += n;
+ if (!(flags & SUPPRESS)) nassigned++;
+ } else {
+ if (!(flags & SUPPRESS)) mbp = va_arg(ap, char*);
+ n = 0;
+ memset(&mbs, 0, sizeof(mbs));
+ while (width != 0 && (wi = __fgetwc_unlock(fp)) != WEOF) {
+ if (width >= MB_CUR_MAX && !(flags & SUPPRESS)) {
+ nconv = wcrtomb(mbp, wi, &mbs);
+ if (nconv == (size_t)-1) goto input_failure;
+ } else {
+ nconv = wcrtomb(mbbuf, wi, &mbs);
+ if (nconv == (size_t)-1) goto input_failure;
+ if (nconv > width) {
+ __ungetwc(wi, fp);
+ break;
+ }
+ if (!(flags & SUPPRESS)) memcpy(mbp, mbbuf, nconv);
+ }
+ if (!(flags & SUPPRESS)) mbp += nconv;
+ width -= nconv;
+ n++;
+ }
+ if (n == 0) goto input_failure;
+ nread += n;
+ if (!(flags & SUPPRESS)) nassigned++;
+ }
+ nconversions++;
+ break;
+
+ case CT_CCL:
+ /* scan a (nonempty) character class (sets NOSKIP) */
+ if (width == 0) width = (size_t)~0; /* `infinity' */
+ /* take only those things in the class */
+ if ((flags & SUPPRESS) && (flags & LONG)) {
+ n = 0;
+ while ((wi = __fgetwc_unlock(fp)) != WEOF && width-- != 0 && INCCL(wi)) n++;
+ if (wi != WEOF) __ungetwc(wi, fp);
+ if (n == 0) goto match_failure;
+ } else if (flags & LONG) {
+ p0 = p = va_arg(ap, wchar_t*);
+ while ((wi = __fgetwc_unlock(fp)) != WEOF && width-- != 0 && INCCL(wi))
+ *p++ = (wchar_t)wi;
+ if (wi != WEOF) __ungetwc(wi, fp);
+ n = p - p0;
+ if (n == 0) goto match_failure;
+ *p = 0;
+ nassigned++;
+ } else {
+ if (!(flags & SUPPRESS)) mbp = va_arg(ap, char*);
+ n = 0;
+ memset(&mbs, 0, sizeof(mbs));
+ while ((wi = __fgetwc_unlock(fp)) != WEOF && width != 0 && INCCL(wi)) {
+ if (width >= MB_CUR_MAX && !(flags & SUPPRESS)) {
+ nconv = wcrtomb(mbp, wi, &mbs);
+ if (nconv == (size_t)-1) goto input_failure;
+ } else {
+ nconv = wcrtomb(mbbuf, wi, &mbs);
+ if (nconv == (size_t)-1) goto input_failure;
+ if (nconv > width) break;
+ if (!(flags & SUPPRESS)) memcpy(mbp, mbbuf, nconv);
+ }
+ if (!(flags & SUPPRESS)) mbp += nconv;
+ width -= nconv;
+ n++;
+ }
+ if (wi != WEOF) __ungetwc(wi, fp);
+ if (!(flags & SUPPRESS)) {
+ *mbp = 0;
+ nassigned++;
+ }
+ }
+ nread += n;
+ nconversions++;
+ break;
+
+ case CT_STRING:
+ /* like CCL, but zero-length string OK, & no NOSKIP */
+ if (width == 0) width = (size_t)~0;
+ if ((flags & SUPPRESS) && (flags & LONG)) {
+ while ((wi = __fgetwc_unlock(fp)) != WEOF && width-- != 0 && !iswspace(wi)) nread++;
+ if (wi != WEOF) __ungetwc(wi, fp);
+ } else if (flags & LONG) {
+ p0 = p = va_arg(ap, wchar_t*);
+ while ((wi = __fgetwc_unlock(fp)) != WEOF && width-- != 0 && !iswspace(wi)) {
+ *p++ = (wchar_t)wi;
+ nread++;
+ }
+ if (wi != WEOF) __ungetwc(wi, fp);
+ *p = 0;
+ nassigned++;
+ } else {
+ if (!(flags & SUPPRESS)) mbp = va_arg(ap, char*);
+ memset(&mbs, 0, sizeof(mbs));
+ while ((wi = __fgetwc_unlock(fp)) != WEOF && width != 0 && !iswspace(wi)) {
+ if (width >= MB_CUR_MAX && !(flags & SUPPRESS)) {
+ nconv = wcrtomb(mbp, wi, &mbs);
+ if (nconv == (size_t)-1) goto input_failure;
+ } else {
+ nconv = wcrtomb(mbbuf, wi, &mbs);
+ if (nconv == (size_t)-1) goto input_failure;
+ if (nconv > width) break;
+ if (!(flags & SUPPRESS)) memcpy(mbp, mbbuf, nconv);
+ }
+ if (!(flags & SUPPRESS)) mbp += nconv;
+ width -= nconv;
+ nread++;
+ }
+ if (wi != WEOF) __ungetwc(wi, fp);
+ if (!(flags & SUPPRESS)) {
+ *mbp = 0;
+ nassigned++;
+ }
+ }
+ nconversions++;
+ continue;
+
+ case CT_INT:
+ /* scan an integer as if by strtoimax/strtoumax */
+ if (width == 0 || width > sizeof(buf) / sizeof(*buf) - 1)
+ width = sizeof(buf) / sizeof(*buf) - 1;
+ flags |= SIGNOK | NDIGITS | NZDIGITS;
+ for (p = buf; width; width--) {
+ c = __fgetwc_unlock(fp);
+ /*
+ * Switch on the character; `goto ok'
+ * if we accept it as a part of number.
+ */
+ switch (c) {
+ /*
+ * The digit 0 is always legal, but is
+ * special. For %i conversions, if no
+ * digits (zero or nonzero) have been
+ * scanned (only signs), we will have
+ * base==0. In that case, we should set
+ * it to 8 and enable 0x prefixing.
+ * Also, if we have not scanned zero digits
+ * before this, do not turn off prefixing
+ * (someone else will turn it off if we
+ * have scanned any nonzero digits).
+ */
+ case '0':
+ if (base == 0) {
+ base = 8;
+ flags |= PFXOK;
+ }
+ if (flags & NZDIGITS)
+ flags &= ~(SIGNOK | NZDIGITS | NDIGITS);
+ else
+ flags &= ~(SIGNOK | PFXOK | NDIGITS);
+ goto ok;
+
+ /* 1 through 7 always legal */
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ base = basefix[base];
+ flags &= ~(SIGNOK | PFXOK | NDIGITS);
+ goto ok;
+
+ /* digits 8 and 9 ok iff decimal or hex */
+ case '8':
+ case '9':
+ base = basefix[base];
+ if (base <= 8) break; /* not legal here */
+ flags &= ~(SIGNOK | PFXOK | NDIGITS);
+ goto ok;
+
+ /* letters ok iff hex */
+ case 'A':
+ case 'B':
+ case 'C':
+ case 'D':
+ case 'E':
+ case 'F':
+ case 'a':
+ case 'b':
+ case 'c':
+ case 'd':
+ case 'e':
+ case 'f':
+ /* no need to fix base here */
+ if (base <= 10) break; /* not legal here */
+ flags &= ~(SIGNOK | PFXOK | NDIGITS);
+ goto ok;
+
+ /* sign ok only as first character */
+ case '+':
+ case '-':
+ if (flags & SIGNOK) {
+ flags &= ~SIGNOK;
+ flags |= HAVESIGN;
+ goto ok;
+ }
+ break;
+
+ /*
+ * x ok iff flag still set and 2nd char (or
+ * 3rd char if we have a sign).
+ */
+ case 'x':
+ case 'X':
+ if ((flags & PFXOK) && p == buf + 1 + !!(flags & HAVESIGN)) {
+ base = 16; /* if %i */
+ flags &= ~PFXOK;
+ goto ok;
+ }
+ break;
+ }
+
+ /*
+ * If we got here, c is not a legal character
+ * for a number. Stop accumulating digits.
+ */
+ if (c != WEOF) __ungetwc(c, fp);
+ break;
+ ok:
+ /*
+ * c is legal: store it and look at the next.
+ */
+ *p++ = (wchar_t)c;
+ }
+ /*
+ * If we had only a sign, it is no good; push
+ * back the sign. If the number ends in `x',
+ * it was [sign] '0' 'x', so push back the x
+ * and treat it as [sign] '0'.
+ */
+ if (flags & NDIGITS) {
+ if (p > buf) __ungetwc(*--p, fp);
+ goto match_failure;
+ }
+ c = p[-1];
+ if (c == 'x' || c == 'X') {
+ --p;
+ __ungetwc(c, fp);
+ }
+ if ((flags & SUPPRESS) == 0) {
+ uintmax_t res;
+
+ *p = '\0';
+ if (flags & UNSIGNED)
+ res = wcstoimax(buf, NULL, base);
+ else
+ res = wcstoumax(buf, NULL, base);
+ if (flags & POINTER)
+ *va_arg(ap, void**) = (void*)(uintptr_t)res;
+ else if (flags & MAXINT)
+ *va_arg(ap, intmax_t*) = res;
+ else if (flags & LLONG)
+ *va_arg(ap, long long*) = res;
+ else if (flags & SIZEINT)
+ *va_arg(ap, ssize_t*) = res;
+ else if (flags & PTRINT)
+ *va_arg(ap, ptrdiff_t*) = res;
+ else if (flags & LONG)
+ *va_arg(ap, long*) = res;
+ else if (flags & SHORT)
+ *va_arg(ap, short*) = res;
+ else if (flags & SHORTSHORT)
+ *va_arg(ap, signed char*) = res;
+ else
+ *va_arg(ap, int*) = res;
+ nassigned++;
+ }
+ nread += p - buf;
+ nconversions++;
+ break;
+
+ case CT_FLOAT:
+ /* scan a floating point number as if by strtod */
+ if (width == 0 || width > sizeof(buf) / sizeof(*buf) - 1)
+ width = sizeof(buf) / sizeof(*buf) - 1;
+ if ((width = wparsefloat(fp, buf, buf + width)) == 0) goto match_failure;
+ if ((flags & SUPPRESS) == 0) {
+ if (flags & LONGDBL) {
+ long double res = wcstold(buf, &p);
+ *va_arg(ap, long double*) = res;
+ } else if (flags & LONG) {
+ double res = wcstod(buf, &p);
+ *va_arg(ap, double*) = res;
+ } else {
+ float res = wcstof(buf, &p);
+ *va_arg(ap, float*) = res;
+ }
+ if (p - buf != (ptrdiff_t)width) abort();
+ nassigned++;
+ }
+ nread += width;
+ nconversions++;
+ break;
+ }
+ }
input_failure:
- return (nconversions != 0 ? nassigned : EOF);
+ return (nconversions != 0 ? nassigned : EOF);
match_failure:
- return (nassigned);
+ return (nassigned);
}
#pragma GCC diagnostic pop
-int
-vfwscanf(FILE * __restrict fp, const wchar_t * __restrict fmt, __va_list ap)
-{
- int r;
+int vfwscanf(FILE* __restrict fp, const wchar_t* __restrict fmt, __va_list ap) {
+ int r;
- FLOCKFILE(fp);
- r = __vfwscanf(fp, fmt, ap);
- FUNLOCKFILE(fp);
- return (r);
+ FLOCKFILE(fp);
+ r = __vfwscanf(fp, fmt, ap);
+ FUNLOCKFILE(fp);
+ return (r);
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-02 17:20:01 +0000