diff options
Diffstat (limited to 'libc/stdio')
| -rw-r--r-- | libc/stdio/scanf.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/libc/stdio/scanf.c b/libc/stdio/scanf.c index dbb92392c..0b9e8007c 100644 --- a/libc/stdio/scanf.c +++ b/libc/stdio/scanf.c @@ -180,9 +180,6 @@ static void init_scan_cookie(struct scan_cookie *sc, FILE *fp) sc->nread = 0; sc->width_flag = 0; sc->ungot_flag = 0; - if ((sc->ungot_char = getc(fp)) > 0) { /* not EOF or EOS */ - sc->ungot_flag = 1; - } } static int scan_getc_nw(struct scan_cookie *sc) @@ -367,24 +364,27 @@ va_list ap; } else { b = buf; } - i = 0; cc = scan_getc(&sc); + if (cc <= 0) { + scan_ungetc(&sc); + goto done; /* return EOF if cnt == 0 */ + } + i = 0; while ((cc>0) && (scanset[cc] != invert)) { - i = store; /* yes, we stored something */ + i = 1; /* yes, we stored something */ *b = cc; b += store; cc = scan_getc(&sc); } + if (i==0) { + scan_ungetc(&sc); + goto done; /* return cnt */ + } if (*p != 'c') { /* nul-terminate the stored string */ *b = 0; - cnt += i; - goto nextfmt; - } else if (sc.width < 0) { /* case 'c' */ - cnt += store; - goto nextfmt; } - scan_ungetc(&sc); - goto done; + cnt += store; + goto nextfmt; } if (p-spec < 12) { /* o,u,p,x,X,i,d - (un)signed integer */ if (*p == 'p') { @@ -418,6 +418,9 @@ va_list ap; } } } + if (base == 0) { /* Default to base 10 */ + base = 10; + } /* At this point, we're ready to start reading digits. */ if (cc == '0') { *b++ = cc; /* Store first leading 0 */ |