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Save off command and buffer history, allow for resumption

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This commit is contained in:
Aaron Cook 2022-06-10 11:43:29 -05:00
commit 17f268d78a
6 changed files with 93 additions and 50 deletions
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96
src/bytenuts.c
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@ -29,6 +29,7 @@
static int parse_args(int argc, char **argv);
static int load_configs();
static int read_state();
static int load_state();
static speed_t string_to_speed(const char *speed);
static const char *speed_to_string(speed_t speed);
@ -49,6 +50,10 @@ bytenuts_run(int argc, char **argv)
return -1;
}
if (bytenuts.resume) {
read_state();
}
bytenuts.serial_fd = serial_open(bytenuts.config.serial_path, bytenuts.config.baud);
if (bytenuts.serial_fd < 0) {
return -1;
@ -109,6 +114,13 @@ bytenuts_run(int argc, char **argv)
if (bytenuts.resume) {
load_state();
} else {
cheerios_insert(
"Welcome to Bytenuts\r\n"
"To quit press ctrl-b q\r\n"
"To see all commands, press ctrl-b h\r\n",
82
);
}
pthread_mutex_lock(&bytenuts.lock);
@ -392,54 +404,70 @@ load_configs()
}
static int
load_state()
read_state()
{
struct stat st;
char *buf;
char *cwd = getcwd(NULL, 0);
char *home = getenv("HOME");
FILE *fd;
buf = calloc(1, snprintf(NULL, 0, "%s/.config/bytenuts/inbuf.log", home) + 1);
sprintf(buf, "%s/.config/bytenuts/inbuf.log", home);
fd = fopen(buf, "r");
stat(buf, &st);
free(buf);
if (fd) {
char **history = NULL;
int history_len = 0;
chdir(home);
fd = fopen(".config/bytenuts/inbuf.log", "r");
stat(".config/bytenuts/inbuf.log", &st);
if (fd && st.st_size > 0) {
buf = calloc(1, st.st_size + 1);
while (fgets(buf, st.st_size+1, fd)) {
history_len++;
history = realloc(history, sizeof(char *) * history_len);
history[history_len-1] = strdup(buf);
}
fclose(fd);
if (history) {
ingest_set_history(history);
for (int i = 0; i < history_len; i++) {
free(history[i]);
}
free(history);
bytenuts.state.history_len++;
bytenuts.state.history = realloc(
bytenuts.state.history,
sizeof(char *) * bytenuts.state.history_len
);
bytenuts.state.history[bytenuts.state.history_len-1] = strdup(buf);
}
free(buf);
}
buf = calloc(1, snprintf(NULL, 0, "%s/.config/bytenuts/outbuf.log", home) + 1);
sprintf(buf, "%s/.config/bytenuts/outbuf.log", home);
fd = fopen(buf, "r");
stat(buf, &st);
free(buf);
if (fd) {
buf = malloc(st.st_size);
fread(buf, 1, st.st_size, fd);
cheerios_insert(buf, st.st_size);
free(buf);
if (fd)
fclose(fd);
stat(".config/bytenuts/outbuf.log", &st);
fd = fopen(".config/bytenuts/outbuf.log", "r");
if (fd && st.st_size > 0) {
bytenuts.state.buf = malloc(st.st_size);
bytenuts.state.buf_len = st.st_size;
fread(bytenuts.state.buf, 1, st.st_size, fd);
}
if (fd)
fclose(fd);
chdir(cwd);
free(cwd);
return 0;
}
static int
load_state()
{
if (bytenuts.state.history) {
ingest_set_history(bytenuts.state.history, bytenuts.state.history_len);
for (int i = 0; i < bytenuts.state.history_len; i++) {
free(bytenuts.state.history[i]);
}
free(bytenuts.state.history);
bytenuts.state.history = NULL;
bytenuts.state.history_len = 0;
}
if (bytenuts.state.buf) {
cheerios_insert(bytenuts.state.buf, bytenuts.state.buf_len);
free(bytenuts.state.buf);
bytenuts.state.buf = NULL;
bytenuts.state.buf_len = 0;
}
return 0;