qemu-io: Move command_loop() and friends
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf
Stefan Hajnoczi
parent
c2cdf5c589
commit
d1174f13e7
139
cmd.c
139
cmd.c
@ -31,145 +31,6 @@
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/* from libxcmd/command.c */
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static int ncmdline;
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static char **cmdline;
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void add_user_command(char *optarg)
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{
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cmdline = g_realloc(cmdline, ++ncmdline * sizeof(char *));
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cmdline[ncmdline-1] = optarg;
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}
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static void prep_fetchline(void *opaque)
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{
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int *fetchable = opaque;
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qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
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*fetchable= 1;
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}
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static char *get_prompt(void);
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void command_loop(void)
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{
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int i, done = 0, fetchable = 0, prompted = 0;
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char *input;
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for (i = 0; !done && i < ncmdline; i++) {
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done = qemuio_command(cmdline[i]);
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}
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if (cmdline) {
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g_free(cmdline);
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return;
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}
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while (!done) {
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if (!prompted) {
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printf("%s", get_prompt());
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fflush(stdout);
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qemu_set_fd_handler(STDIN_FILENO, prep_fetchline, NULL, &fetchable);
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prompted = 1;
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}
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main_loop_wait(false);
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if (!fetchable) {
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continue;
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}
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input = fetchline();
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if (input == NULL) {
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break;
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}
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done = qemuio_command(input);
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free(input);
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prompted = 0;
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fetchable = 0;
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}
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qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
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}
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/* from libxcmd/input.c */
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#if defined(ENABLE_READLINE)
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# include <readline/history.h>
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# include <readline/readline.h>
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#elif defined(ENABLE_EDITLINE)
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# include <histedit.h>
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#endif
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static char *
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get_prompt(void)
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{
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static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ];
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if (!prompt[0])
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snprintf(prompt, sizeof(prompt), "%s> ", progname);
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return prompt;
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}
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#if defined(ENABLE_READLINE)
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char *
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fetchline(void)
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{
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char *line;
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line = readline(get_prompt());
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if (line && *line)
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add_history(line);
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return line;
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}
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#elif defined(ENABLE_EDITLINE)
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static char *el_get_prompt(EditLine *e) { return get_prompt(); }
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char *
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fetchline(void)
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{
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static EditLine *el;
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static History *hist;
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HistEvent hevent;
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char *line;
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int count;
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if (!el) {
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hist = history_init();
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history(hist, &hevent, H_SETSIZE, 100);
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el = el_init(progname, stdin, stdout, stderr);
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el_source(el, NULL);
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el_set(el, EL_SIGNAL, 1);
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el_set(el, EL_PROMPT, el_get_prompt);
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el_set(el, EL_HIST, history, (const char *)hist);
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}
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line = strdup(el_gets(el, &count));
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if (line) {
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if (count > 0)
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line[count-1] = '\0';
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if (*line)
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history(hist, &hevent, H_ENTER, line);
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}
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return line;
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}
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#else
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# define MAXREADLINESZ 1024
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char *
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fetchline(void)
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{
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char *p, *line = malloc(MAXREADLINESZ);
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if (!line)
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return NULL;
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if (!fgets(line, MAXREADLINESZ, stdin)) {
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free(line);
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return NULL;
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}
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p = line + strlen(line);
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if (p != line && p[-1] == '\n')
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p[-1] = '\0';
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return line;
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}
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#endif
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#define EXABYTES(x) ((long long)(x) << 60)
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#define PETABYTES(x) ((long long)(x) << 50)
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#define TERABYTES(x) ((long long)(x) << 40)
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9
cmd.h
9
cmd.h
@ -39,18 +39,11 @@ typedef struct cmdinfo {
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helpfunc_t help;
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} cmdinfo_t;
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typedef int (*checkfunc_t)(BlockDriverState *bs, const cmdinfo_t *ci);
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void qemuio_add_command(const cmdinfo_t *ci);
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void add_user_command(char *optarg);
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void add_check_command(checkfunc_t cf);
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void command_loop(void);
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int qemuio_command_usage(const cmdinfo_t *ci);
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/* from input.h */
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char *fetchline(void);
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void cvtstr(double value, char *str, size_t sz);
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struct timeval tsub(struct timeval t1, struct timeval t2);
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@ -64,8 +57,6 @@ enum {
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void timestr(struct timeval *tv, char *str, size_t sz, int flags);
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extern char *progname;
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bool qemuio_command(const char *cmd);
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#endif /* __COMMAND_H__ */
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139
qemu-io.c
139
qemu-io.c
@ -29,6 +29,10 @@ char *progname;
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BlockDriverState *qemuio_bs;
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extern int qemuio_misalign;
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/* qemu-io commands passed using -c */
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static int ncmdline;
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static char **cmdline;
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static int close_f(BlockDriverState *bs, int argc, char **argv)
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{
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bdrv_delete(bs);
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@ -174,6 +178,141 @@ static void usage(const char *name)
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}
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#if defined(ENABLE_READLINE)
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# include <readline/history.h>
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# include <readline/readline.h>
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#elif defined(ENABLE_EDITLINE)
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# include <histedit.h>
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#endif
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static char *get_prompt(void)
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{
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static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ];
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if (!prompt[0]) {
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snprintf(prompt, sizeof(prompt), "%s> ", progname);
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}
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return prompt;
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}
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#if defined(ENABLE_READLINE)
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static char *fetchline(void)
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{
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char *line = readline(get_prompt());
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if (line && *line) {
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add_history(line);
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}
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return line;
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}
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#elif defined(ENABLE_EDITLINE)
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static char *el_get_prompt(EditLine *e)
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{
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return get_prompt();
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}
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static char *fetchline(void)
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{
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static EditLine *el;
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static History *hist;
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HistEvent hevent;
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char *line;
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int count;
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if (!el) {
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hist = history_init();
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history(hist, &hevent, H_SETSIZE, 100);
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el = el_init(progname, stdin, stdout, stderr);
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el_source(el, NULL);
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el_set(el, EL_SIGNAL, 1);
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el_set(el, EL_PROMPT, el_get_prompt);
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el_set(el, EL_HIST, history, (const char *)hist);
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}
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line = strdup(el_gets(el, &count));
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if (line) {
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if (count > 0) {
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line[count-1] = '\0';
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}
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if (*line) {
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history(hist, &hevent, H_ENTER, line);
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}
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}
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return line;
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}
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#else
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# define MAXREADLINESZ 1024
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static char *fetchline(void)
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{
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char *p, *line = g_malloc(MAXREADLINESZ);
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if (!fgets(line, MAXREADLINESZ, stdin)) {
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g_free(line);
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return NULL;
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}
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p = line + strlen(line);
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if (p != line && p[-1] == '\n') {
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p[-1] = '\0';
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}
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return line;
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}
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#endif
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static void prep_fetchline(void *opaque)
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{
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int *fetchable = opaque;
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qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
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*fetchable= 1;
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}
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static void command_loop(void)
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{
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int i, done = 0, fetchable = 0, prompted = 0;
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char *input;
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for (i = 0; !done && i < ncmdline; i++) {
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done = qemuio_command(cmdline[i]);
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}
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if (cmdline) {
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g_free(cmdline);
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return;
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}
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while (!done) {
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if (!prompted) {
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printf("%s", get_prompt());
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fflush(stdout);
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qemu_set_fd_handler(STDIN_FILENO, prep_fetchline, NULL, &fetchable);
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prompted = 1;
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}
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main_loop_wait(false);
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if (!fetchable) {
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continue;
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}
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input = fetchline();
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if (input == NULL) {
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break;
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}
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done = qemuio_command(input);
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g_free(input);
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prompted = 0;
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fetchable = 0;
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}
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qemu_set_fd_handler(STDIN_FILENO, NULL, NULL, NULL);
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}
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static void add_user_command(char *optarg)
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{
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cmdline = g_realloc(cmdline, ++ncmdline * sizeof(char *));
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cmdline[ncmdline-1] = optarg;
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}
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int main(int argc, char **argv)
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{
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int readonly = 0;
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