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qemu-io: Move command_loop() and friends

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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2013-06-05 14:19:37 +02:00 • committed by Stefan Hajnoczi
parent c2cdf5c589
commit d1174f13e7
3 changed files with 139 additions and 148 deletions
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139
qemu-io.c
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@ -29,6 +29,10 @@ char *progname;
BlockDriverState *qemuio_bs;
extern int qemuio_misalign;
/* qemu-io commands passed using -c */
static int ncmdline;
static char **cmdline;
static int close_f(BlockDriverState *bs, int argc, char **argv)
{
bdrv_delete(bs);
@ -174,6 +178,141 @@ static void usage(const char *name)
}
#if defined(ENABLE_READLINE)
# include <readline/history.h>
# include <readline/readline.h>
#elif defined(ENABLE_EDITLINE)
# include <histedit.h>
#endif
static char *get_prompt(void)
{
static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ];
if (!prompt[0]) {
snprintf(prompt, sizeof(prompt), "%s> ", progname);
}
return prompt;
}
#if defined(ENABLE_READLINE)
static char *fetchline(void)
{
char *line = readline(get_prompt());
if (line && *line) {
add_history(line);
}
return line;
}
#elif defined(ENABLE_EDITLINE)
static char *el_get_prompt(EditLine *e)
{
return get_prompt();
}
static char *fetchline(void)
{
static EditLine *el;
static History *hist;
HistEvent hevent;
char *line;
int count;
if (!el) {
hist = history_init();
history(hist, &hevent, H_SETSIZE, 100);
el = el_init(progname, stdin, stdout, stderr);
el_source(el, NULL);
el_set(el, EL_SIGNAL, 1);
el_set(el, EL_PROMPT, el_get_prompt);
el_set(el, EL_HIST, history, (const char *)hist);
}
line = strdup(el_gets(el, &count));
if (line) {
if (count > 0) {
line[count-1] = '\0';
}
if (*line) {
history(hist, &hevent, H_ENTER, line);
}
}
return line;
}
#else
# define MAXREADLINESZ 1024
static char *fetchline(void)
{
char *p, *line = g_malloc(MAXREADLINESZ);
if (!fgets(line, MAXREADLINESZ, stdin)) {
g_free(line);
return NULL;
}
p = line + strlen(line);
if (p != line && p[-1] == '\n') {
p[-1] = '\0';
}
return line;
}
#endif
static void prep_fetchline(void *opaque)
{
int *fetchable = opaque;
qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
*fetchable= 1;
}
static void command_loop(void)
{
int i, done = 0, fetchable = 0, prompted = 0;
char *input;
for (i = 0; !done && i < ncmdline; i++) {
done = qemuio_command(cmdline[i]);
}
if (cmdline) {
g_free(cmdline);
return;
}
while (!done) {
if (!prompted) {
printf("%s", get_prompt());
fflush(stdout);
qemu_set_fd_handler(STDIN_FILENO, prep_fetchline, NULL, &fetchable);
prompted = 1;
}
main_loop_wait(false);
if (!fetchable) {
continue;
}
input = fetchline();
if (input == NULL) {
break;
}
done = qemuio_command(input);
g_free(input);
prompted = 0;
fetchable = 0;
}
qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
}
static void add_user_command(char *optarg)
{
cmdline = g_realloc(cmdline, ++ncmdline * sizeof(char *));
cmdline[ncmdline-1] = optarg;
}
int main(int argc, char **argv)
{
int readonly = 0;