getkey cleanups/tweaks (#76071, <ben@enchantedforest.org>)

1 files changed, 122 insertions, 98 deletions

diff --git a/src/getkey.c b/src/getkey.c
index 0aa60921..62833b7d 100644
--- a/src/getkey.c
+++ b/src/getkey.c
@@ -1,98 +1,122 @@
-
-#include <ctype.h>
-#include <errno.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <termios.h>
-#include <unistd.h>
-#include <sys/poll.h>
-
-/* A very simple keygrabber. */
-
-struct termios tp;
-
-void reset_term(int x) {
-	tcsetattr(0,TCSANOW,&tp);
-	exit(x);
-}
-
-int main(int argc, char **argv) {
-	char foo[2];
-	char *list = NULL;
-	char *waitmessage = NULL;
-	char *waitprint, *waitsprint;
-	int waitseconds=0;
-	int alarmlen=0;
-	int tp_if,tp_of,tp_lf;
-	int x, r;
-	struct pollfd ufds; /* only one, no need for an array... */
-	
-	for (++argv, --argc; argc; argc--, argv++) {
-	    if (argv[0][0]=='-') {
-		if (argv[0][1]=='c') {
-		    argc--; argv++;
-		    waitseconds = atoi(argv[0]);
-		} else if (argv[0][1]=='m') {
-		    argc--; argv++;
-		    waitmessage=argv[0];
-		} else if (isdigit(argv[0][1])) {
-		    waitseconds = atoi(argv[0]);
-		}
-	    } else {
-		list = argv[0];
-		for (x=0;list[x];x++) list[x]=toupper(list[x]);
-	    }
-	}
-	if (waitseconds) {
-	    alarmlen = waitseconds;
-	}
-	foo[0]=foo[1]='\0';
-
-	signal(SIGTERM,reset_term);
-	alarm(alarmlen);
-	signal(SIGALRM,reset_term);
-
-	tcgetattr(0,&tp);
-	tp_if=tp.c_iflag;
-	tp_of=tp.c_oflag;
-	tp_lf=tp.c_lflag;
-	tp.c_iflag=0;
-	tp.c_oflag &= ~OPOST;
-	tp.c_lflag &= ~(ISIG | ICANON);
-	tcsetattr(0,TCSANOW,&tp);
-	tp.c_iflag=tp_if;
-	tp.c_oflag=tp_of;
-	tp.c_lflag=tp_lf;
-
-	ufds.events = POLLIN;
-	ufds.fd = 0;
-
-	if (waitseconds && waitmessage) {
-	    waitprint = alloca (strlen(waitmessage)+15); /* long enough */
-	    waitprint[0] = '\r';
-	    waitsprint = waitprint + 1;
-	}
-
-	while (1) {
-	    if (waitseconds) {
-		sprintf (waitsprint, waitmessage, waitseconds);
-		write (1, waitprint, strlen(waitprint));
-	    }
-	    r = poll(&ufds, 1, alarmlen ? 1000 : -1);
-	    if (r == 0) {
-		/* we have waited a whole second with no keystroke... */
-		waitseconds--;
-	    }
-	    if (r > 0) {
-		read(0,foo,1);
-		foo[0]=toupper(foo[0]);
-		/* Die if we get a control-c or control-d */
-		if (foo[0]==3 || foo[0]==4) reset_term(1);
-		if ((!list) || strstr(list,foo)) {
-			reset_term(0);
-		}
-	    }
-	}
-}
+/*

+ * getkey

+ *

+ * A very simple keygrabber.

+ *

+ */

+#include <ctype.h>

+#include <errno.h>

+#include <signal.h>

+#include <stdlib.h>

+#include <stdio.h>

+#include <string.h>

+#include <termios.h>

+#include <unistd.h>

+#include <sys/poll.h>

+#include "popt.h"

+

+struct termios tp;

+

+void reset_term(int x) {

+	tcsetattr(0,TCSANOW,&tp);

+	exit(x);

+}

+

+int main(int argc, char **argv) {

+	char foo[2];

+	char list[100]; /* should be enough */

+	char *waitmessage = NULL;

+	char *waitprint, *waitsprint;

+	const char *fooptr;

+	int waitseconds=0;

+	int alarmlen=0;

+	int ignore_control=0;

+	int tp_if,tp_of,tp_lf;

+	int x, r;

+	struct pollfd ufds; /* only one, no need for an array... */

+        poptContext context;

+	struct poptOption options[] = {

+            { "wait", 'c', POPT_ARG_INT, &waitseconds, 0, "Number of seconds to wait for keypress", NULL },

+	    /*            { "message", 'm', POPT_ARG_STRING, &waitmessage, 0, "Message to print out while waiting for string", "NOTE: argument must have a \"%d\" in it so the number of seconds\nleft until getkey times out can be printed" },*/

+            { "message", 'm', POPT_ARG_STRING, &waitmessage, 0, "Message to print out while waiting for string\nNOTE: message must have a \"%d\" in it, to hold the number of seconds left to wait", NULL },

+            { "ignore-control-chars", 'i', POPT_ARG_NONE, &ignore_control, 0, "Ignore Control-C and Control-D", NULL },

+            POPT_AUTOHELP

+            POPT_TABLEEND

+        };

+

+	strcpy(list, "");

+        context = poptGetContext("getkey", argc, argv, options, 

+                                POPT_CONTEXT_POSIXMEHARDER);

+        poptSetOtherOptionHelp(context, "[keys]");

+

+        r = poptGetNextOpt(context);

+        if (r < -1) {

+            fprintf(stderr, "%s: %s\n", 

+                   poptBadOption(context, POPT_BADOPTION_NOALIAS),

+                   poptStrerror(r));

+

+            return -1;

+        }

+        fooptr = poptGetArg(context);

+	if (fooptr != NULL) {

+	    strncpy(list, fooptr, sizeof(list) - 1);

+	    list[99] = '\0';

+	    for (x=0;list[x];x++) list[x]=toupper(list[x]);

+	}

+	if (waitseconds) {

+	    alarmlen = waitseconds;

+	}

+	foo[0]=foo[1]='\0';

+

+	signal(SIGTERM,reset_term);

+	alarm(alarmlen);

+	signal(SIGALRM,reset_term);

+

+	tcgetattr(0,&tp);

+	tp_if=tp.c_iflag;

+	tp_of=tp.c_oflag;

+	tp_lf=tp.c_lflag;

+	tp.c_iflag=0;

+	tp.c_oflag &= ~OPOST;

+	tp.c_lflag &= ~(ISIG | ICANON);

+	tcsetattr(0,TCSANOW,&tp);

+	tp.c_iflag=tp_if;

+	tp.c_oflag=tp_of;

+	tp.c_lflag=tp_lf;

+

+	ufds.events = POLLIN;

+	ufds.fd = 0;

+

+	if (waitseconds && waitmessage) {

+	    waitprint = alloca (strlen(waitmessage)+15); /* long enough */

+	    waitprint[0] = '\r';

+	    waitsprint = waitprint + 1;

+	}

+

+	while (1) {

+	    if (waitseconds && waitmessage) {

+		sprintf (waitsprint, waitmessage, waitseconds);

+		write (1, waitprint, strlen(waitprint));

+	    }

+	    r = poll(&ufds, 1, alarmlen ? 1000 : -1);

+	    if (r == 0) {

+		/* we have waited a whole second with no keystroke... */

+		waitseconds--;

+	    }

+	    if (r > 0) {

+		read(0,foo,1);

+		foo[0]=toupper(foo[0]);

+		/* Die if we get a control-c or control-d */

+                if (ignore_control == 0) {

+		    if (foo[0]==3 || foo[0]==4) reset_term(1);

+                }

+		/* Don't let a null character be interpreted as a match

+		   by strstr */

+		if (foo[0] != 0) {

+		    if (strcmp(list, "") == 0 || strstr(list,foo)) {

+		      reset_term(0);

+		    }

+		}

+	    }

+	}

+}