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Don't steal Ctrl-C from the kernel by default (so leave SIGINT enabled); add a flag to take it if required

This commit is contained in:
Paul LeoNerd Evans 2011-03-23 23:20:24 +00:00
parent a71f68dd57
commit 9f0ef4953d
3 changed files with 10 additions and 1 deletions
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7
termkey.c
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@ -278,7 +278,12 @@ static TermKey *termkey_new_full(int fd, int flags, size_t buffsize, int waittim
tk->restore_termios_valid = 1;
termios.c_iflag &= ~(IXON|INLCR|ICRNL);
termios.c_lflag &= ~(ICANON|ECHO|ISIG);
termios.c_lflag &= ~(ICANON|ECHO);
termios.c_cc[VQUIT] = 0;
termios.c_cc[VSUSP] = 0;
if(flags & TERMKEY_FLAG_CTRLC)
termios.c_cc[VINTR] = 0;
tcsetattr(fd, TCSANOW, &termios);
}

1
termkey.h.in
View File

@ -139,6 +139,7 @@ enum {
TERMKEY_FLAG_UTF8 = 1 << 3, // Input is definitely UTF-8
TERMKEY_FLAG_NOTERMIOS = 1 << 4, // Do not make initial termios calls on construction
TERMKEY_FLAG_SPACESYMBOL = 1 << 5, // Space is symbolic rather than Unicode
TERMKEY_FLAG_CTRLC = 1 << 6, // Allow Ctrl-C to be read as normal, disabling SIGINT
};
void termkey_check_version(int major, int minor);

3
termkey_new.3
View File

@ -41,6 +41,9 @@ device, do not call the \fBtcsetattr\fP() \fBtermios\fP function on it to set it
.TP
.B TERMKEY_FLAG_SPACESYMBOL
Report space as being a symbolic key rather than a Unicode codepoint.
.TP
.B TERMKEY_FLAG_CTRLC
Disable the \fBSIGINT\fP behaviour of \fICtrl-C\fP. If this flag is provided, then \fICtrl-C\fP will be available as a normal keypress, rather than sending the process group a \fBSIGINT\fP. This flag only takes effect without \fBTERMKEY_FLAG_NOTERMIOS\fP; with it, none of the signal keys are disabled anyway.
.PP
When the constructor is invoked, it attempts to detect if the current locale is UTF-8 aware or not, and sets either the \fBTERMKEY_FLAG_UTF8\fP or \fBTERMKEY_FLAG_RAW\fP flag. One of these two bits will always be in effect. The current flags in effect can be obtained by \fBtermkey_get_flags\fP().
.SH VERSION CHECK MACRO