Improve readline code:
don't flush if we change output stream; use readline from interrupt handler. git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@85 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
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@ -760,8 +760,6 @@ static char *ttyptr = NULL;
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static char *_line = (char *) NULL;
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static char *_line = (char *) NULL;
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int in_readline = FALSE;
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static int cur_out_sno = 2;
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static int cur_out_sno = 2;
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#define READLINE_OUT_BUF_MAX 256
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#define READLINE_OUT_BUF_MAX 256
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@ -776,8 +774,7 @@ static int
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ReadlinePutc (int sno, int ch)
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ReadlinePutc (int sno, int ch)
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{
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{
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if (ReadlinePos != ReadlineBuf &&
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if (ReadlinePos != ReadlineBuf &&
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(sno != cur_out_sno ||
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(ReadlinePos - ReadlineBuf == READLINE_OUT_BUF_MAX-1 /* overflow */ ||
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ReadlinePos - ReadlineBuf == READLINE_OUT_BUF_MAX-1 ||
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#if MAC || _MSC_VER
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#if MAC || _MSC_VER
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ch == 10 ||
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ch == 10 ||
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#endif
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#endif
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@ -824,7 +821,6 @@ ReadlineGetc(int sno)
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rl_instream = Stream[sno].u.file.file;
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rl_instream = Stream[sno].u.file.file;
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rl_outstream = Stream[cur_out_sno].u.file.file;
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rl_outstream = Stream[cur_out_sno].u.file.file;
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/* window of vulnerability opened */
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/* window of vulnerability opened */
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in_readline = TRUE;
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if (newline) {
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if (newline) {
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char *cptr = Prompt, ch;
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char *cptr = Prompt, ch;
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@ -848,7 +844,6 @@ ReadlineGetc(int sno)
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}
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}
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}
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}
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newline=FALSE;
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newline=FALSE;
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in_readline = FALSE;
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strncpy (Prompt, RepAtom (*AtPrompt)->StrOfAE, MAX_PROMPT);
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strncpy (Prompt, RepAtom (*AtPrompt)->StrOfAE, MAX_PROMPT);
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/* window of vulnerability closed */
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/* window of vulnerability closed */
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if (PrologMode & AbortMode) {
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if (PrologMode & AbortMode) {
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31
C/sysbits.c
31
C/sysbits.c
@ -81,6 +81,9 @@ static char SccsId[] = "%W% %G%";
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#include <sys/param.h>
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#include <sys/param.h>
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#endif
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#endif
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#endif
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#endif
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#if HAVE_LIBREADLINE
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#include <readline/readline.h>
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#endif
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STATIC_PROTO (void InitPageSize, (void));
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STATIC_PROTO (void InitPageSize, (void));
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STATIC_PROTO (void InitTime, (void));
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STATIC_PROTO (void InitTime, (void));
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@ -1060,6 +1063,11 @@ void (*handler)(int);
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#endif
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#endif
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#if HAVE_LIBREADLINE
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static char *_line = NULL;
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#endif
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void
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void
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ProcessSIGINT(void)
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ProcessSIGINT(void)
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{
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{
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@ -1070,12 +1078,18 @@ ProcessSIGINT(void)
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int ch0;
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int ch0;
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#endif
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#endif
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#if HAVE_LIBREADLINE
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if (_line != (char *) NULL && _line != (char *) EOF)
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free (_line);
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_line = readline ("Action (h for help): ");
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if (_line == (char *)NULL || _line == (char *)EOF)
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continue;
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ch = _line[0];
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#else
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YP_fprintf(YP_stderr, "\nAction (h for help): ");
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YP_fprintf(YP_stderr, "\nAction (h for help): ");
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ch = YP_getchar ( );
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ch = YP_getchar ( );
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#if HAVE_LIBREADLINE
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if (!in_readline)
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#endif
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while ((YP_getchar()) != '\n');
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while ((YP_getchar()) != '\n');
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#endif
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switch (ch)
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switch (ch)
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{
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{
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case 'a':
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case 'a':
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@ -1094,13 +1108,8 @@ ProcessSIGINT(void)
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#ifdef VAX
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#ifdef VAX
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VaxFixFrame (CritMode);
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VaxFixFrame (CritMode);
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#endif
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#endif
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#if HAVE_LIBREADLINE
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/* we cannot abort until we finish readline :-( */
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/* we cannot abort until we finish readline :-( */
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if (in_readline) {
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if (!(PrologMode & CritMode)) {
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/* readline must eat a newline, otherwise we will
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have to wait before we do the Abort() */
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} else if (!(PrologMode & CritMode)) {
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#endif
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#if defined(__MINGW32__) || _MSC_VER
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#if defined(__MINGW32__) || _MSC_VER
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/* we can't do a direct abort, so ask the system to do it for us */
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/* we can't do a direct abort, so ask the system to do it for us */
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p_creep();
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p_creep();
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@ -1201,10 +1210,6 @@ ProcessSIGINT(void)
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YP_fprintf(YP_stderr, " e for exit\n t for trace\n s for statistics\n");
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YP_fprintf(YP_stderr, " e for exit\n t for trace\n s for statistics\n");
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break;
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break;
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}
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}
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#if HAVE_LIBREADLINE
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/* we must do the reading now, because libreadline won't have a chance here */
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while ((YP_getchar()) != '\n');
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#endif
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}
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}
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}
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}
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@ -283,10 +283,6 @@ void STD_PROTO(plwrite,(Term,int (*)(int, int),int));
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/* grow.c */
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/* grow.c */
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int STD_PROTO(growstack_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
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int STD_PROTO(growstack_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
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#ifdef HAVE_LIBREADLINE
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extern int in_readline;
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#endif
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#if HAVE_ERRNO_H
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#if HAVE_ERRNO_H
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#include <errno.h>
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#include <errno.h>
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#else
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#else
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