diff options
Diffstat (limited to 'src/fgetsintr.c')
| -rw-r--r-- | src/fgetsintr.c | 82 |
1 files changed, 41 insertions, 41 deletions
diff --git a/src/fgetsintr.c b/src/fgetsintr.c index bda1ed8..136be73 100644 --- a/src/fgetsintr.c +++ b/src/fgetsintr.c @@ -2,12 +2,12 @@ Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The Netherlands. - All Rights Reserved + All Rights Reserved -Permission to use, copy, modify, and distribute this software and its -documentation for any purpose and without fee is hereby granted, +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that -both that copyright notice and this permission notice appear in +both that copyright notice and this permission notice appear in supporting documentation, and that the names of Stichting Mathematisch Centrum or CWI not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. @@ -23,10 +23,10 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************/ /* Interruptable version of fgets(). - Return < 0 for interrupted, 1 for EOF, 0 for valid input. */ + Return < 0 for interrupted, 1 for EOF, 0 for valid input. */ /* XXX This uses longjmp() from a signal out of fgets(). - Should use read() instead?! */ + Should use read() instead?! */ #include "pgenheaders.h" @@ -38,8 +38,8 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. #include "fgetsintr.h" #ifndef AMOEBA -#define sig_block() /*empty*/ -#define sig_unblock() /*empty*/ +#define sig_block() /*empty*/ +#define sig_unblock() /*empty*/ #endif static jmp_buf jback; @@ -48,47 +48,47 @@ static void catcher PROTO((int)); static void catcher(sig) - int sig; + int sig; { - longjmp(jback, 1); + longjmp(jback, 1); } int fgets_intr(buf, size, fp) - char *buf; - int size; - FILE *fp; + char *buf; + int size; + FILE *fp; { - int ret; - SIGTYPE (*sigsave)(); - - if (setjmp(jback)) { - clearerr(fp); - signal(SIGINT, sigsave); + int ret; + SIGTYPE (*sigsave)(); + + if (setjmp(jback)) { + clearerr(fp); + signal(SIGINT, sigsave); #ifdef THINK_C_3_0 - Set_Echo(1); + Set_Echo(1); #endif - return E_INTR; - } - - /* The casts to (SIGTYPE(*)()) are needed by THINK_C only */ - - sigsave = signal(SIGINT, (SIGTYPE(*)()) SIG_IGN); - if (sigsave != (SIGTYPE(*)()) SIG_IGN) - signal(SIGINT, (SIGTYPE(*)()) catcher); - + return E_INTR; + } + + /* The casts to (SIGTYPE(*)()) are needed by THINK_C only */ + + sigsave = signal(SIGINT, (SIGTYPE(*)()) SIG_IGN); + if (sigsave != (SIGTYPE(*)()) SIG_IGN) + signal(SIGINT, (SIGTYPE(*)()) catcher); + #ifndef THINK_C - if (intrcheck()) - ret = E_INTR; - else + if (intrcheck()) + ret = E_INTR; + else #endif - { - sig_block(); - ret = (fgets(buf, size, fp) == NULL) ? E_EOF : E_OK; - sig_unblock(); - } - - if (sigsave != (SIGTYPE(*)()) SIG_IGN) - signal(SIGINT, (SIGTYPE(*)()) sigsave); - return ret; + { + sig_block(); + ret = (fgets(buf, size, fp) == NULL) ? E_EOF : E_OK; + sig_unblock(); + } + + if (sigsave != (SIGTYPE(*)()) SIG_IGN) + signal(SIGINT, (SIGTYPE(*)()) sigsave); + return ret; } |