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Move GNU readline interface to ../Modules/readline.c. 

Add Py_input_hook (used by _tkinter and perhaps Gist).
This commit is contained in:
Guido van Rossum 1997-08-05 21:28:12 +00:00
parent 0969d36275
commit 717c6f95be
1 changed files with 3 additions and 78 deletions
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81
Parser/myreadline.c
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@ -51,79 +51,7 @@ PERFORMANCE OF THIS SOFTWARE.
#include "mymalloc.h" #include "mymalloc.h"
#include "intrcheck.h" #include "intrcheck.h"
int (*Py_input_hook)() = NULL;
#ifdef WITH_READLINE
extern char *readline();
extern int rl_initialize();
extern int rl_insert();
extern int rl_bind_key();
extern void add_history();
extern char *rl_readline_name;
#include <setjmp.h>
#include <signal.h>
static jmp_buf jbuf;
/* ARGSUSED */
static RETSIGTYPE
onintr(sig)
int sig;
{
longjmp(jbuf, 1);
}
void
PyOS_ReadlineInit()
{
static int been_here;
if (!been_here) {
/* Force rebind of TAB to insert-tab */
rl_readline_name = "python";
rl_initialize();
rl_bind_key('\t', rl_insert);
been_here++;
}
}
char *
PyOS_GnuReadline(prompt)
char *prompt;
{
int n;
char *p;
RETSIGTYPE (*old_inthandler)();
PyOS_ReadlineInit();
old_inthandler = signal(SIGINT, onintr);
if (setjmp(jbuf)) {
#ifdef HAVE_SIGRELSE
/* This seems necessary on SunOS 4.1 (Rasmus Hahn) */
sigrelse(SIGINT);
#endif
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;
}
#endif /* !WITH_READLINE */
/* This function restarts a fgets() after an EINTR error occurred /* This function restarts a fgets() after an EINTR error occurred
except if PyOS_InterruptOccurred() returns true. */ except if PyOS_InterruptOccurred() returns true. */
@ -136,6 +64,8 @@ my_fgets(buf, len, fp)
{ {
char *p; char *p;
for (;;) { for (;;) {
if (Py_input_hook != NULL)
(void)(Py_input_hook)();
errno = 0; errno = 0;
p = fgets(buf, len, fp); p = fgets(buf, len, fp);
if (p != NULL) if (p != NULL)
@ -221,11 +151,6 @@ PyOS_Readline(prompt)
char *prompt; char *prompt;
{ {
if (PyOS_ReadlineFunctionPointer == NULL) { if (PyOS_ReadlineFunctionPointer == NULL) {
#ifdef WITH_READLINE
if (isatty(fileno(stdin)))
PyOS_ReadlineFunctionPointer = PyOS_GnuReadline;
else
#endif
PyOS_ReadlineFunctionPointer = PyOS_StdioReadline; PyOS_ReadlineFunctionPointer = PyOS_StdioReadline;
} }
return (*PyOS_ReadlineFunctionPointer)(prompt); return (*PyOS_ReadlineFunctionPointer)(prompt);