Commit d31eee5e authored by Chong Yidong's avatar Chong Yidong

(encode_terminal_code): Free any previous memory blocks

before calling xmalloc for encode_terminal_src or
encode_terminal_dst.
(maybe_fatal): Buffer argument deleted.  Don't free buffer here.
All callers changed.
(init_tty): Store termcap data and string buffers in new struct
tty members termcap_term_buffer and termcap_strings_buffer.
(delete_tty): Free them.
(syms_of_term): Initialize encode_terminal_src and
encode_terminal_dst.
parent d93264c6
......@@ -581,10 +581,10 @@ encode_terminal_code (src, src_len, coding)
required = MAX_MULTIBYTE_LENGTH * src_len;
if (encode_terminal_src_size < required)
{
if (encode_terminal_src_size == 0)
encode_terminal_src = xmalloc (required);
else
if (encode_terminal_src)
encode_terminal_src = xrealloc (encode_terminal_src, required);
else
encode_terminal_src = xmalloc (required);
encode_terminal_src_size = required;
}
......@@ -740,7 +740,11 @@ encode_terminal_code (src, src_len, coding)
if (encode_terminal_dst_size == 0)
{
encode_terminal_dst_size = encode_terminal_src_size;
encode_terminal_dst = xmalloc (encode_terminal_dst_size);
if (encode_terminal_dst)
encode_terminal_dst = xrealloc (encode_terminal_dst,
encode_terminal_dst_size);
else
encode_terminal_dst = xmalloc (encode_terminal_dst_size);
}
coding->destination = encode_terminal_dst;
coding->dst_bytes = encode_terminal_dst_size;
......@@ -3326,7 +3330,6 @@ init_tty (char *name, char *terminal_type, int must_succeed)
{
char *area = NULL;
char **address = &area;
char *buffer = NULL;
int buffer_size = 4096;
register char *p = NULL;
int status;
......@@ -3335,7 +3338,7 @@ init_tty (char *name, char *terminal_type, int must_succeed)
int ctty = 0; /* 1 if asked to open controlling tty. */
if (!terminal_type)
maybe_fatal (must_succeed, 0, 0,
maybe_fatal (must_succeed, 0,
"Unknown terminal type",
"Unknown terminal type");
......@@ -3356,7 +3359,7 @@ init_tty (char *name, char *terminal_type, int must_succeed)
terminal = create_terminal ();
#ifdef MSDOS
if (been_here > 0)
maybe_fatal (1, 0, 0, "Attempt to create another terminal %s", "",
maybe_fatal (1, 0, "Attempt to create another terminal %s", "",
name, "");
been_here = 1;
tty = &the_only_display_info;
......@@ -3397,14 +3400,14 @@ init_tty (char *name, char *terminal_type, int must_succeed)
#endif /* O_IGNORE_CTTY */
if (fd < 0)
maybe_fatal (must_succeed, buffer, terminal,
maybe_fatal (must_succeed, terminal,
"Could not open file: %s",
"Could not open file: %s",
name);
if (!isatty (fd))
{
close (fd);
maybe_fatal (must_succeed, buffer, terminal,
maybe_fatal (must_succeed, terminal,
"Not a tty device: %s",
"Not a tty device: %s",
name);
......@@ -3504,22 +3507,22 @@ init_tty (char *name, char *terminal_type, int must_succeed)
Wcm_clear (tty);
buffer = (char *) xmalloc (buffer_size);
tty->termcap_term_buffer = (char *) xmalloc (buffer_size);
/* On some systems, tgetent tries to access the controlling
terminal. */
sigblock (sigmask (SIGTTOU));
status = tgetent (buffer, terminal_type);
status = tgetent (tty->termcap_term_buffer, terminal_type);
sigunblock (sigmask (SIGTTOU));
if (status < 0)
{
#ifdef TERMINFO
maybe_fatal (must_succeed, buffer, terminal,
maybe_fatal (must_succeed, terminal,
"Cannot open terminfo database file",
"Cannot open terminfo database file");
#else
maybe_fatal (must_succeed, buffer, terminal,
maybe_fatal (must_succeed, terminal,
"Cannot open termcap database file",
"Cannot open termcap database file");
#endif
......@@ -3527,7 +3530,7 @@ init_tty (char *name, char *terminal_type, int must_succeed)
if (status == 0)
{
#ifdef TERMINFO
maybe_fatal (must_succeed, buffer, terminal,
maybe_fatal (must_succeed, terminal,
"Terminal type %s is not defined",
"Terminal type %s is not defined.\n\
If that is not the actual type of terminal you have,\n\
......@@ -3536,7 +3539,7 @@ use the Bourne shell command `TERM=... export TERM' (C-shell:\n\
to do `unset TERMINFO' (C-shell: `unsetenv TERMINFO') as well.",
terminal_type);
#else
maybe_fatal (must_succeed, buffer, terminal,
maybe_fatal (must_succeed, terminal,
"Terminal type %s is not defined",
"Terminal type %s is not defined.\n\
If that is not the actual type of terminal you have,\n\
......@@ -3548,12 +3551,11 @@ to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
}
#ifndef TERMINFO
if (strlen (buffer) >= buffer_size)
if (strlen (tty->termcap_term_buffer) >= buffer_size)
abort ();
buffer_size = strlen (buffer);
buffer_size = strlen (tty->termcap_term_buffer);
#endif
area = (char *) xmalloc (buffer_size);
tty->termcap_strings_buffer = area = (char *) xmalloc (buffer_size);
tty->TS_ins_line = tgetstr ("al", address);
tty->TS_ins_multi_lines = tgetstr ("AL", address);
tty->TS_bell = tgetstr ("bl", address);
......@@ -3690,7 +3692,7 @@ to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
FrameRows (tty) = tgetnum ("li");
if (FrameRows (tty) < 3 || FrameCols (tty) < 3)
maybe_fatal (must_succeed, NULL, terminal,
maybe_fatal (must_succeed, terminal,
"Screen size %dx%d is too small"
"Screen size %dx%d is too small",
FrameCols (tty), FrameRows (tty));
......@@ -3814,7 +3816,7 @@ to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
if (Wcm_init (tty) == -1) /* can't do cursor motion */
{
maybe_fatal (must_succeed, NULL, terminal,
maybe_fatal (must_succeed, terminal,
"Terminal type \"%s\" is not powerful enough to run Emacs",
# ifdef TERMINFO
"Terminal type \"%s\" is not powerful enough to run Emacs.\n\
......@@ -3835,7 +3837,7 @@ to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
}
if (FrameRows (tty) <= 0 || FrameCols (tty) <= 0)
maybe_fatal (must_succeed, NULL, terminal,
maybe_fatal (must_succeed, terminal,
"Could not determine the frame size",
"Could not determine the frame size");
......@@ -3868,9 +3870,6 @@ to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
init_baud_rate (fileno (tty->input));
/* Don't do this. I think termcap may still need the buffer. */
/* xfree (buffer); */
#endif /* not DOS_NT */
/* Init system terminal modes (RAW or CBREAK, etc.). */
......@@ -3880,18 +3879,15 @@ to do `unset TERMCAP' (C-shell: `unsetenv TERMCAP') as well.",
}
/* Auxiliary error-handling function for init_tty.
Free BUFFER and delete TERMINAL, then call error or fatal
with str1 or str2, respectively, according to MUST_SUCCEED. */
Delete TERMINAL, then call error or fatal with str1 or str2,
respectively, according to MUST_SUCCEED. */
static void
maybe_fatal (must_succeed, buffer, terminal, str1, str2, arg1, arg2)
maybe_fatal (must_succeed, terminal, str1, str2, arg1, arg2)
int must_succeed;
char *buffer;
struct terminal *terminal;
char *str1, *str2, *arg1, *arg2;
{
xfree (buffer);
if (terminal)
delete_tty (terminal);
......@@ -3989,6 +3985,10 @@ delete_tty (struct terminal *terminal)
xfree (tty->old_tty);
xfree (tty->Wcm);
if (tty->termcap_strings_buffer)
xfree (tty->termcap_strings_buffer);
if (tty->termcap_term_buffer)
xfree (tty->termcap_term_buffer);
bzero (tty, sizeof (struct tty_display_info));
xfree (tty);
......@@ -4061,6 +4061,9 @@ bigger, or it may make it blink, or it may do nothing at all. */);
default_set_foreground = NULL;
default_set_background = NULL;
#endif /* !DOS_NT */
encode_terminal_src = NULL;
encode_terminal_dst = NULL;
}
......
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