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TOP= .. | ||
PGENDIR= $(TOP)/Parser | ||
PGEN= $(PGENDIR)/pgen | ||
DESTH= $(TOP)/Py/graminit.h | ||
DESTC= $(TOP)/Python/graminit.c | ||
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all: install | ||
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install: $(DESTH) $(DESTC) | ||
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$(DESTH): graminit.h | ||
cp graminit.h $(DESTH) | ||
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$(DESTC): graminit.c | ||
cp graminit.c $(DESTC) | ||
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graminit.c graminit.h: $(PGEN) Grammar | ||
$(PGEN) Grammar | ||
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$(PGEN): | ||
cd $(PGENDIR); make pgen | ||
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clean: | ||
-rm -f *.o core *~ [@,#]* *.old *.orig *.rej | ||
-rm -f graminit.[ch] | ||
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clobber: clean | ||
-rm -f tags TAGS |
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/*********************************************************** | ||
Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum, | ||
Amsterdam, The Netherlands. | ||
All Rights Reserved | ||
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 | ||
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. | ||
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO | ||
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | ||
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE | ||
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | ||
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT | ||
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | ||
******************************************************************/ | ||
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/* Readline interface for tokenizer.c. | ||
By default, we have a super simple my_readline function. | ||
Optionally, we can use the GNU readline library (to be found in the | ||
bash distribution). | ||
my_readline() has a different return value from GNU readline(): | ||
- NULL if an interrupt occurred or if an error occurred | ||
- a malloc'ed empty string if EOF was read | ||
- a malloc'ed string ending in \n normally | ||
*/ | ||
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#include <stdio.h> | ||
#include <string.h> | ||
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#include "mymalloc.h" | ||
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#ifdef HAVE_READLINE | ||
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extern char *readline(); | ||
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#include <setjmp.h> | ||
#include <signal.h> | ||
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static jmp_buf jbuf; | ||
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/* ARGSUSED */ | ||
static RETSIGTYPE | ||
onintr(sig) | ||
int sig; | ||
{ | ||
longjmp(jbuf, 1); | ||
} | ||
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#endif /* HAVE_READLINE */ | ||
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char * | ||
my_readline(prompt) | ||
char *prompt; | ||
{ | ||
int n; | ||
char *p; | ||
#ifdef HAVE_READLINE | ||
RETSIGTYPE (*old_inthandler)(); | ||
static int been_here; | ||
if (!been_here) { | ||
/* Force rebind of TAB to insert-tab */ | ||
extern int rl_insert(); | ||
rl_bind_key('\t', rl_insert); | ||
been_here++; | ||
} | ||
old_inthandler = signal(SIGINT, onintr); | ||
if (setjmp(jbuf)) { | ||
signal(SIGINT, old_inthandler); | ||
return NULL; | ||
} | ||
p = readline(prompt); | ||
signal(SIGINT, old_inthandler); | ||
if (p == NULL) { | ||
p = malloc(1); | ||
if (p != NULL) | ||
*p = '\0'; | ||
return p; | ||
} | ||
n = strlen(p); | ||
if (n > 0) | ||
add_history(p); | ||
if ((p = realloc(p, n+2)) != NULL) { | ||
p[n] = '\n'; | ||
p[n+1] = '\0'; | ||
} | ||
return p; | ||
#else /* !HAVE_READLINE */ | ||
n = 100; | ||
if ((p = malloc(n)) == NULL) | ||
return NULL; | ||
if (prompt) | ||
fprintf(stderr, "%s", prompt); | ||
if (fgets(p, n, stdin) == NULL) | ||
*p = '\0'; | ||
if (intrcheck()) { | ||
free(p); | ||
return NULL; | ||
} | ||
n = strlen(p); | ||
while (n > 0 && p[n-1] != '\n') { | ||
int incr = n+2; | ||
p = realloc(p, n + incr); | ||
if (p == NULL) | ||
return NULL; | ||
if (fgets(p+n, incr, stdin) == NULL) | ||
break; | ||
n += strlen(p+n); | ||
} | ||
return realloc(p, n+1); | ||
#endif /* !HAVE_READLINE */ | ||
} |