fdo-mirrors/libinput
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/libinput/libinput.git synced 2026-01-24 10:50:19 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

tools/record: factor out the output file collection

Browse source 
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2021-03-26 08:34:50 +10:00
parent 2babdba1d7
commit 0828fdcea0
1 changed files with 74 additions and 54 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

128
tools/libinput-record.c
View file

@ -2601,6 +2601,67 @@ is_char_dev(const char *path)
return S_ISCHR(st.st_mode) ? F_DEVICE : F_FILE;
}
enum fposition {
ERROR,
NOFILE,
FIRST,
LAST,
};
static enum fposition
find_output_file(int argc, char *argv[], const char **output_file)
{
char *first, *last;
enum ftype ftype_first, ftype_last;
first = argv[0];
ftype_first = is_char_dev(first);
if (argc == 1) {
/* arg is *not* a char device, so let's assume it's
* the output file */
if (ftype_first != F_DEVICE) {
*output_file = first;
return FIRST;
}
}
/* multiple arguments, yay */
last = argv[argc - 1];
ftype_last = is_char_dev(last);
/*
first is device, last is file -> last
first is device, last is device -> noop
first is device, last !exist -> last
first is file, last is device -> first
first is file, last is file -> error
first is file, last !exist -> error
first !exist, last is device -> first
first !exist, last is file -> error
first !exit, last !exist -> error
*/
#define _m(f, l) (((f) << 8) | (l))
switch (_m(ftype_first, ftype_last)) {
case _m(F_FILE, F_DEVICE):
case _m(F_FILE, F_NOEXIST):
case _m(F_NOEXIST, F_DEVICE):
*output_file = first;
return FIRST;
case _m(F_DEVICE, F_FILE):
case _m(F_DEVICE, F_NOEXIST):
*output_file = last;
return LAST;
case _m(F_DEVICE, F_DEVICE):
break;
case _m(F_FILE, F_FILE):
case _m(F_NOEXIST, F_FILE):
case _m(F_NOEXIST, F_NOEXIST):
return ERROR;
}
#undef _m
return NOFILE;
}
enum options {
OPT_AUTORESTART,
OPT_HELP,
@ -2696,62 +2757,21 @@ main(int argc, char **argv)
* because this will only backfire anyway.
*/
if (ndevices >= 1 && output_arg == NULL) {
char *first, *last;
enum ftype ftype_first;
first = argv[optind];
last = argv[argc - 1];
ftype_first = is_char_dev(first);
if (ndevices == 1) {
/* arg is *not* a char device, so let's assume it's
* the output file */
if (ftype_first != F_DEVICE) {
output_arg = first;
optind++;
ndevices--;
}
/* multiple arguments, yay */
} else {
enum ftype ftype_last = is_char_dev(last);
/*
first is device, last is file -> last
first is device, last is device -> noop
first is device, last !exist -> last
first is file, last is device -> first
first is file, last is file -> error
first is file, last !exist -> error
first !exist, last is device -> first
first !exist, last is file -> error
first !exit, last !exist -> error
*/
#define _m(f, l) (((f) << 8) | (l))
switch (_m(ftype_first, ftype_last)) {
case _m(F_FILE, F_DEVICE):
case _m(F_FILE, F_NOEXIST):
case _m(F_NOEXIST, F_DEVICE):
output_arg = first;
optind++;
ndevices--;
break;
case _m(F_DEVICE, F_FILE):
case _m(F_DEVICE, F_NOEXIST):
output_arg = last;
ndevices--;
break;
case _m(F_DEVICE, F_DEVICE):
break;
case _m(F_FILE, F_FILE):
case _m(F_NOEXIST, F_FILE):
case _m(F_NOEXIST, F_NOEXIST):
fprintf(stderr, "Ambiguous device vs output file list. Please use --output-file.\n");
rc = EXIT_INVALID_USAGE;
goto out;
}
#undef _m
enum fposition pos = find_output_file(argc - optind,
&argv[optind],
&output_arg);
if (pos == ERROR) {
fprintf(stderr,
"Ambiguous device vs output file list. "
"Please use --output-file.\n");
return EXIT_INVALID_USAGE;
}
}
if (pos == FIRST || pos == LAST)
ndevices--;
if (pos == FIRST)
optind++;
}
if (ctx.timeout > 0 && output_arg == NULL) {
fprintf(stderr,