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Allow {start,stop}_driver to fail, abort constructor, have driver-ti try to write the entire start/stop string or error out on -1

This commit is contained in:
Paul LeoNerd Evans 2012-01-20 17:00:09 +00:00
parent 8d2fa34a52
commit 052738b8f4
3 changed files with 39 additions and 11 deletions
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39
driver-ti.c
View File

@ -289,27 +289,54 @@ abort_free_ti:
return NULL;
}
static void start_driver(TermKey *tk, void *info)
static int start_driver(TermKey *tk, void *info)
{
TermKeyTI *ti = info;
char *start_string = ti->start_string;
size_t len;
if(tk->fd == -1 || !start_string)
return 1;
/* The terminfo database will contain keys in application cursor key mode.
* We may need to enable that mode
*/
if(tk->fd != -1 && ti->start_string) {
// Can't call putp or tputs because they suck and don't give us fd control
(void)write(tk->fd, ti->start_string, strlen(ti->start_string));
len = strlen(start_string);
while(len) {
size_t written = write(tk->fd, start_string, len);
if(written == -1)
return 0;
start_string += written;
len -= written;
}
return 1;
}
static void stop_driver(TermKey *tk, void *info)
static int stop_driver(TermKey *tk, void *info)
{
TermKeyTI *ti = info;
char *stop_string = ti->stop_string;
size_t len;
if(tk->fd == -1 || !stop_string)
return 1;
/* The terminfo database will contain keys in application cursor key mode.
* We may need to enable that mode
*/
if(tk->fd != -1 && ti->stop_string) {
// Can't call putp or tputs because they suck and don't give us fd control
(void)write(tk->fd, ti->stop_string, strlen(ti->stop_string));
len = strlen(stop_string);
while(len) {
size_t written = write(tk->fd, stop_string, len);
if(written == -1)
return 0;
stop_string += written;
len -= written;
}
return 1;
}
static void free_driver(void *info)

4
termkey-internal.h
View File

@ -11,8 +11,8 @@ struct TermKeyDriver
const char *name;
void *(*new_driver)(TermKey *tk, const char *term);
void (*free_driver)(void *info);
void (*start_driver)(TermKey *tk, void *info);
void (*stop_driver)(TermKey *tk, void *info);
int (*start_driver)(TermKey *tk, void *info);
int (*stop_driver)(TermKey *tk, void *info);
TermKeyResult (*peekkey)(TermKey *tk, void *info, TermKeyKey *key, int force, size_t *nbytes);
};

3
termkey.c
View File

@ -318,7 +318,8 @@ static TermKey *termkey_new_full(int fd, int flags, size_t buffsize, int waittim
struct TermKeyDriverNode *p;
for(p = tk->drivers; p; p = p->next)
if(p->driver->start_driver)
(*p->driver->start_driver)(tk, p->info);
if(!(*p->driver->start_driver)(tk, p->info))
goto abort_free_drivers;
#ifdef DEBUG
fprintf(stderr, "Drivers started; termkey instance %p is ready\n", tk);