diff options
Diffstat (limited to 'src/getkey.c')
| -rw-r--r-- | src/getkey.c | 90 |
1 files changed, 47 insertions, 43 deletions
diff --git a/src/getkey.c b/src/getkey.c index 132ea3ff..f3b094d7 100644 --- a/src/getkey.c +++ b/src/getkey.c @@ -1,5 +1,5 @@ /*
- * Copyright (c) 1999-2003 Red Hat, Inc. All rights reserved.
+ * Copyright (c) 1999-2003, 2006 Red Hat, Inc. All rights reserved.
*
* This software may be freely redistributed under the terms of the GNU
* public license.
@@ -24,37 +24,35 @@ #include <sys/poll.h>
#include "popt.h"
-struct termios tp;
+static struct termios orig_tp;
-void reset_term(int x) {
- tcsetattr(0,TCSANOW,&tp);
- exit(x);
+static void reset_term(int x) {
+ tcsetattr(0,TCSANOW,&orig_tp);
+ _exit(x);
}
int main(int argc, char **argv) {
- char foo[2];
- char list[100]; /* should be enough */
+ static const char default_list[] = "";
+
+ const char *list;
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 termios tp;
+ int 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 },
+ { "message", 'm', POPT_ARG_STRING, &waitmessage, 0, "Message to print out while waiting for string\nNOTE: The message may 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,
+ context = poptGetContext("getkey", argc, (const char **)argv, options,
POPT_CONTEXT_POSIXMEHARDER);
poptSetOtherOptionHelp(context, "[keys]");
@@ -66,44 +64,51 @@ int main(int argc, char **argv) { 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]);
- }
+ list = poptGetArg(context);
+ if (list != NULL) {
+ char *p;
+
+ p = strdup(list);
+ list = p;
+ while (*p != 0) {
+ *p = toupper(*p);
+ p++;
+ }
+ } else
+ list = default_list;
if (waitseconds) {
+ if (waitseconds < 0) {
+ fprintf(stderr, "--wait: Invalid time %d seconds\n",
+ waitseconds);
+ return -1;
+ }
alarmlen = waitseconds;
}
- foo[0]=foo[1]='\0';
+ tcgetattr(0,&tp);
+ orig_tp = tp;
signal(SIGTERM,reset_term);
- alarm(alarmlen);
- signal(SIGALRM,reset_term);
+ if (alarmlen != 0) {
+ signal(SIGALRM,reset_term);
+ alarm(alarmlen);
+ }
- 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) {
+ if (waitmessage) {
waitprint = alloca (strlen(waitmessage)+15); /* long enough */
waitprint[0] = '\r';
waitsprint = waitprint + 1;
}
while (1) {
- if (waitseconds && waitmessage) {
+ if (waitmessage) {
sprintf (waitsprint, waitmessage, waitseconds);
write (1, waitprint, strlen(waitprint));
}
@@ -113,19 +118,18 @@ int main(int argc, char **argv) { waitseconds--;
}
if (r > 0) {
- read(0,foo,1);
- foo[0]=toupper(foo[0]);
+ char ch;
+
+ read(0, &ch, sizeof(ch));
+ ch = toupper(ch);
/* Die if we get a control-c or control-d */
- if (ignore_control == 0) {
- if (foo[0]==3 || foo[0]==4) reset_term(1);
- }
+ if (ignore_control == 0 && (ch == 3 || ch == 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);
- }
- }
+ by strchr */
+ if (ch != 0
+ && (strcmp(list, "") == 0 || strchr(list, ch) != NULL))
+ reset_term(0);
}
}
}
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