separated readline from monitor code - added password input support - added output buffer
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1034 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard
parent
3d2cfdf169
commit
7e2515e87c
493
monitor.c
493
monitor.c
@ -32,36 +32,6 @@
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#define offsetof(type, field) ((size_t) &((type *)0)->field)
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#endif
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#define TERM_CMD_BUF_SIZE 4095
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#define TERM_MAX_CMDS 64
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#define NB_COMPLETIONS_MAX 256
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#define IS_NORM 0
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#define IS_ESC 1
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#define IS_CSI 2
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#define printf do_not_use_printf
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static char term_cmd_buf[TERM_CMD_BUF_SIZE + 1];
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static int term_cmd_buf_index;
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static int term_cmd_buf_size;
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static char term_last_cmd_buf[TERM_CMD_BUF_SIZE + 1];
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static int term_last_cmd_buf_index;
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static int term_last_cmd_buf_size;
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static int term_esc_state;
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static int term_esc_param;
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static char *term_history[TERM_MAX_CMDS];
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static int term_hist_entry;
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static CharDriverState *monitor_hd;
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static int nb_completions;
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static int completion_index;
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static char *completions[NB_COMPLETIONS_MAX];
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/*
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* Supported types:
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*
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@ -83,23 +53,52 @@ typedef struct term_cmd_t {
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const char *help;
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} term_cmd_t;
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static CharDriverState *monitor_hd;
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static term_cmd_t term_cmds[];
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static term_cmd_t info_cmds[];
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static void add_completion(const char *str);
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static char term_outbuf[1024];
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static int term_outbuf_index;
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void term_printf(const char *fmt, ...)
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{
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char buf[4096];
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va_list ap;
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va_start(ap, fmt);
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vsnprintf(buf, sizeof(buf), fmt, ap);
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qemu_chr_write(monitor_hd, buf, strlen(buf));
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va_end(ap);
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}
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static void monitor_start_input(void);
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void term_flush(void)
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{
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if (term_outbuf_index > 0) {
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qemu_chr_write(monitor_hd, term_outbuf, term_outbuf_index);
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term_outbuf_index = 0;
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}
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}
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/* flush at every end of line or if the buffer is full */
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void term_puts(const char *str)
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{
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int c;
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for(;;) {
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c = *str++;
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if (c == '\0')
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break;
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term_outbuf[term_outbuf_index++] = c;
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if (term_outbuf_index >= sizeof(term_outbuf) ||
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c == '\n')
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term_flush();
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}
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}
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void term_vprintf(const char *fmt, va_list ap)
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{
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char buf[4096];
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vsnprintf(buf, sizeof(buf), fmt, ap);
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term_puts(buf);
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}
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void term_printf(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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term_vprintf(fmt, ap);
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va_end(ap);
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}
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static int compare_cmd(const char *name, const char *list)
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@ -159,9 +158,10 @@ static void do_commit(void)
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int i;
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for (i = 0; i < MAX_DISKS; i++) {
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if (bs_table[i])
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if (bs_table[i]) {
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bdrv_commit(bs_table[i]);
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}
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}
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}
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static void do_info(const char *item)
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@ -215,11 +215,14 @@ static void do_info_registers(void)
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static void do_info_history (void)
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{
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int i;
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const char *str;
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for (i = 0; i < TERM_MAX_CMDS; i++) {
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if (term_history[i] == NULL)
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i = 0;
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for(;;) {
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str = readline_get_history(i);
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if (!str)
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break;
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term_printf("%d: '%s'\n", i, term_history[i]);
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term_printf("%d: '%s'\n", i, str);
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}
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}
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@ -261,6 +264,8 @@ static void do_eject(int force, const char *filename)
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static void do_change(const char *device, const char *filename)
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{
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BlockDriverState *bs;
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int i;
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char password[256];
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bs = bdrv_find(device);
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if (!bs) {
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@ -270,6 +275,15 @@ static void do_change(const char *device, const char *filename)
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if (eject_device(bs, 0) < 0)
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return;
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bdrv_open(bs, filename, 0);
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if (bdrv_is_encrypted(bs)) {
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term_printf("%s is encrypted.\n", device);
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for(i = 0; i < 3; i++) {
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monitor_readline("Password: ", 1, password, sizeof(password));
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if (bdrv_set_key(bs, password) == 0)
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break;
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term_printf("invalid password\n");
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}
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}
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}
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static void do_screen_dump(const char *filename)
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@ -1178,7 +1192,7 @@ static int default_fmt_size = 4;
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#define MAX_ARGS 16
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static void term_handle_command(const char *cmdline)
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static void monitor_handle_command(const char *cmdline)
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{
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const char *p, *pstart, *typestr;
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char *q;
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@ -1577,7 +1591,7 @@ static void parse_cmdline(const char *cmdline,
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*pnb_args = nb_args;
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}
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static void find_completion(const char *cmdline)
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void readline_find_completion(const char *cmdline)
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{
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const char *cmdname;
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char *args[MAX_ARGS];
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@ -1646,348 +1660,6 @@ static void find_completion(const char *cmdline)
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qemu_free(args[i]);
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}
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static void term_show_prompt2(void)
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{
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term_printf("(qemu) ");
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fflush(stdout);
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term_last_cmd_buf_index = 0;
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term_last_cmd_buf_size = 0;
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term_esc_state = IS_NORM;
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}
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static void term_show_prompt(void)
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{
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term_show_prompt2();
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term_cmd_buf_index = 0;
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term_cmd_buf_size = 0;
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}
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/* update the displayed command line */
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static void term_update(void)
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{
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int i, delta;
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if (term_cmd_buf_size != term_last_cmd_buf_size ||
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memcmp(term_cmd_buf, term_last_cmd_buf, term_cmd_buf_size) != 0) {
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for(i = 0; i < term_last_cmd_buf_index; i++) {
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term_printf("\033[D");
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}
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term_cmd_buf[term_cmd_buf_size] = '\0';
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term_printf("%s", term_cmd_buf);
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term_printf("\033[K");
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memcpy(term_last_cmd_buf, term_cmd_buf, term_cmd_buf_size);
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term_last_cmd_buf_size = term_cmd_buf_size;
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term_last_cmd_buf_index = term_cmd_buf_size;
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}
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if (term_cmd_buf_index != term_last_cmd_buf_index) {
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delta = term_cmd_buf_index - term_last_cmd_buf_index;
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if (delta > 0) {
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for(i = 0;i < delta; i++) {
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term_printf("\033[C");
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}
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} else {
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delta = -delta;
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for(i = 0;i < delta; i++) {
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term_printf("\033[D");
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}
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}
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term_last_cmd_buf_index = term_cmd_buf_index;
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}
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term_flush();
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}
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static void term_insert_char(int ch)
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{
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if (term_cmd_buf_index < TERM_CMD_BUF_SIZE) {
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memmove(term_cmd_buf + term_cmd_buf_index + 1,
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term_cmd_buf + term_cmd_buf_index,
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term_cmd_buf_size - term_cmd_buf_index);
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term_cmd_buf[term_cmd_buf_index] = ch;
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term_cmd_buf_size++;
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term_cmd_buf_index++;
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}
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}
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static void term_backward_char(void)
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{
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if (term_cmd_buf_index > 0) {
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term_cmd_buf_index--;
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}
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}
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static void term_forward_char(void)
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{
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if (term_cmd_buf_index < term_cmd_buf_size) {
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term_cmd_buf_index++;
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}
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}
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static void term_delete_char(void)
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{
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if (term_cmd_buf_index < term_cmd_buf_size) {
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memmove(term_cmd_buf + term_cmd_buf_index,
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term_cmd_buf + term_cmd_buf_index + 1,
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term_cmd_buf_size - term_cmd_buf_index - 1);
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term_cmd_buf_size--;
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}
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}
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static void term_backspace(void)
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{
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if (term_cmd_buf_index > 0) {
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term_backward_char();
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term_delete_char();
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}
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}
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static void term_bol(void)
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{
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term_cmd_buf_index = 0;
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}
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static void term_eol(void)
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{
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term_cmd_buf_index = term_cmd_buf_size;
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}
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static void term_up_char(void)
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{
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int idx;
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if (term_hist_entry == 0)
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return;
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if (term_hist_entry == -1) {
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/* Find latest entry */
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for (idx = 0; idx < TERM_MAX_CMDS; idx++) {
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if (term_history[idx] == NULL)
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break;
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}
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term_hist_entry = idx;
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}
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term_hist_entry--;
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if (term_hist_entry >= 0) {
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pstrcpy(term_cmd_buf, sizeof(term_cmd_buf),
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term_history[term_hist_entry]);
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term_cmd_buf_index = term_cmd_buf_size = strlen(term_cmd_buf);
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}
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}
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static void term_down_char(void)
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{
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if (term_hist_entry == TERM_MAX_CMDS - 1 || term_hist_entry == -1)
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return;
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if (term_history[++term_hist_entry] != NULL) {
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pstrcpy(term_cmd_buf, sizeof(term_cmd_buf),
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term_history[term_hist_entry]);
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} else {
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term_hist_entry = -1;
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}
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term_cmd_buf_index = term_cmd_buf_size = strlen(term_cmd_buf);
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}
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static void term_hist_add(const char *cmdline)
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{
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char *hist_entry, *new_entry;
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int idx;
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if (cmdline[0] == '\0')
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return;
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new_entry = NULL;
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if (term_hist_entry != -1) {
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/* We were editing an existing history entry: replace it */
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hist_entry = term_history[term_hist_entry];
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idx = term_hist_entry;
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if (strcmp(hist_entry, cmdline) == 0) {
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goto same_entry;
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}
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}
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/* Search cmdline in history buffers */
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for (idx = 0; idx < TERM_MAX_CMDS; idx++) {
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hist_entry = term_history[idx];
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if (hist_entry == NULL)
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break;
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if (strcmp(hist_entry, cmdline) == 0) {
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same_entry:
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new_entry = hist_entry;
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/* Put this entry at the end of history */
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memmove(&term_history[idx], &term_history[idx + 1],
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&term_history[TERM_MAX_CMDS] - &term_history[idx + 1]);
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term_history[TERM_MAX_CMDS - 1] = NULL;
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for (; idx < TERM_MAX_CMDS; idx++) {
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if (term_history[idx] == NULL)
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break;
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}
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break;
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}
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}
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if (idx == TERM_MAX_CMDS) {
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/* Need to get one free slot */
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free(term_history[0]);
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memcpy(term_history, &term_history[1],
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&term_history[TERM_MAX_CMDS] - &term_history[1]);
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term_history[TERM_MAX_CMDS - 1] = NULL;
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idx = TERM_MAX_CMDS - 1;
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}
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if (new_entry == NULL)
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new_entry = strdup(cmdline);
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term_history[idx] = new_entry;
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term_hist_entry = -1;
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}
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/* completion support */
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static void add_completion(const char *str)
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{
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if (nb_completions < NB_COMPLETIONS_MAX) {
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completions[nb_completions++] = qemu_strdup(str);
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}
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}
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static void term_completion(void)
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{
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int len, i, j, max_width, nb_cols;
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char *cmdline;
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nb_completions = 0;
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cmdline = qemu_malloc(term_cmd_buf_index + 1);
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if (!cmdline)
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return;
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memcpy(cmdline, term_cmd_buf, term_cmd_buf_index);
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cmdline[term_cmd_buf_index] = '\0';
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find_completion(cmdline);
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qemu_free(cmdline);
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/* no completion found */
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if (nb_completions <= 0)
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return;
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if (nb_completions == 1) {
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len = strlen(completions[0]);
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for(i = completion_index; i < len; i++) {
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term_insert_char(completions[0][i]);
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}
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/* extra space for next argument. XXX: make it more generic */
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if (len > 0 && completions[0][len - 1] != '/')
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term_insert_char(' ');
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} else {
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term_printf("\n");
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max_width = 0;
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for(i = 0; i < nb_completions; i++) {
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len = strlen(completions[i]);
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if (len > max_width)
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max_width = len;
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}
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max_width += 2;
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if (max_width < 10)
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max_width = 10;
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else if (max_width > 80)
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max_width = 80;
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nb_cols = 80 / max_width;
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j = 0;
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for(i = 0; i < nb_completions; i++) {
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term_printf("%-*s", max_width, completions[i]);
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if (++j == nb_cols || i == (nb_completions - 1)) {
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term_printf("\n");
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j = 0;
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}
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}
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term_show_prompt2();
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}
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}
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/* return true if command handled */
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static void term_handle_byte(int ch)
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{
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switch(term_esc_state) {
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case IS_NORM:
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switch(ch) {
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case 1:
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term_bol();
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break;
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case 4:
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term_delete_char();
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break;
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case 5:
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term_eol();
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break;
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case 9:
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term_completion();
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break;
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case 10:
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case 13:
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term_cmd_buf[term_cmd_buf_size] = '\0';
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term_hist_add(term_cmd_buf);
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term_printf("\n");
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term_handle_command(term_cmd_buf);
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term_show_prompt();
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break;
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case 27:
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term_esc_state = IS_ESC;
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break;
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case 127:
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case 8:
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term_backspace();
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break;
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case 155:
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term_esc_state = IS_CSI;
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break;
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default:
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if (ch >= 32) {
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term_insert_char(ch);
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}
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break;
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}
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break;
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case IS_ESC:
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if (ch == '[') {
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term_esc_state = IS_CSI;
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term_esc_param = 0;
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} else {
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term_esc_state = IS_NORM;
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}
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break;
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case IS_CSI:
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switch(ch) {
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case 'A':
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case 'F':
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term_up_char();
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break;
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case 'B':
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case 'E':
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term_down_char();
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break;
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case 'D':
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term_backward_char();
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break;
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case 'C':
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term_forward_char();
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break;
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case '0' ... '9':
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term_esc_param = term_esc_param * 10 + (ch - '0');
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goto the_end;
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case '~':
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switch(term_esc_param) {
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case 1:
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term_bol();
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break;
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case 3:
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term_delete_char();
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break;
|
||||
case 4:
|
||||
term_eol();
|
||||
break;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
term_esc_state = IS_NORM;
|
||||
the_end:
|
||||
break;
|
||||
}
|
||||
term_update();
|
||||
}
|
||||
|
||||
static int term_can_read(void *opaque)
|
||||
{
|
||||
return 128;
|
||||
@ -1997,7 +1669,20 @@ static void term_read(void *opaque, const uint8_t *buf, int size)
|
||||
{
|
||||
int i;
|
||||
for(i = 0; i < size; i++)
|
||||
term_handle_byte(buf[i]);
|
||||
readline_handle_byte(buf[i]);
|
||||
}
|
||||
|
||||
static void monitor_start_input(void);
|
||||
|
||||
static void monitor_handle_command1(void *opaque, const char *cmdline)
|
||||
{
|
||||
monitor_handle_command(cmdline);
|
||||
monitor_start_input();
|
||||
}
|
||||
|
||||
static void monitor_start_input(void)
|
||||
{
|
||||
readline_start("(qemu) ", 0, monitor_handle_command1, NULL);
|
||||
}
|
||||
|
||||
void monitor_init(CharDriverState *hd, int show_banner)
|
||||
@ -2006,8 +1691,34 @@ void monitor_init(CharDriverState *hd, int show_banner)
|
||||
if (show_banner) {
|
||||
term_printf("QEMU %s monitor - type 'help' for more information\n",
|
||||
QEMU_VERSION);
|
||||
term_show_prompt();
|
||||
}
|
||||
term_hist_entry = -1;
|
||||
qemu_chr_add_read_handler(hd, term_can_read, term_read, NULL);
|
||||
monitor_start_input();
|
||||
}
|
||||
|
||||
/* XXX: use threads ? */
|
||||
/* modal monitor readline */
|
||||
static int monitor_readline_started;
|
||||
static char *monitor_readline_buf;
|
||||
static int monitor_readline_buf_size;
|
||||
|
||||
static void monitor_readline_cb(void *opaque, const char *input)
|
||||
{
|
||||
pstrcpy(monitor_readline_buf, monitor_readline_buf_size, input);
|
||||
monitor_readline_started = 0;
|
||||
}
|
||||
|
||||
void monitor_readline(const char *prompt, int is_password,
|
||||
char *buf, int buf_size)
|
||||
{
|
||||
if (is_password) {
|
||||
qemu_chr_send_event(monitor_hd, CHR_EVENT_FOCUS);
|
||||
}
|
||||
readline_start(prompt, is_password, monitor_readline_cb, NULL);
|
||||
monitor_readline_buf = buf;
|
||||
monitor_readline_buf_size = buf_size;
|
||||
monitor_readline_started = 1;
|
||||
while (monitor_readline_started) {
|
||||
main_loop_wait(10);
|
||||
}
|
||||
}
|
||||
|
||||
425
readline.c
Normal file
425
readline.c
Normal file
@ -0,0 +1,425 @@
|
||||
/*
|
||||
* QEMU readline utility
|
||||
*
|
||||
* Copyright (c) 2003-2004 Fabrice Bellard
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
#include "vl.h"
|
||||
|
||||
#define TERM_CMD_BUF_SIZE 4095
|
||||
#define TERM_MAX_CMDS 64
|
||||
#define NB_COMPLETIONS_MAX 256
|
||||
|
||||
#define IS_NORM 0
|
||||
#define IS_ESC 1
|
||||
#define IS_CSI 2
|
||||
|
||||
#define printf do_not_use_printf
|
||||
|
||||
static char term_cmd_buf[TERM_CMD_BUF_SIZE + 1];
|
||||
static int term_cmd_buf_index;
|
||||
static int term_cmd_buf_size;
|
||||
|
||||
static char term_last_cmd_buf[TERM_CMD_BUF_SIZE + 1];
|
||||
static int term_last_cmd_buf_index;
|
||||
static int term_last_cmd_buf_size;
|
||||
|
||||
static int term_esc_state;
|
||||
static int term_esc_param;
|
||||
|
||||
static char *term_history[TERM_MAX_CMDS];
|
||||
static int term_hist_entry = -1;
|
||||
|
||||
static int nb_completions;
|
||||
int completion_index;
|
||||
static char *completions[NB_COMPLETIONS_MAX];
|
||||
|
||||
static ReadLineFunc *term_readline_func;
|
||||
static int term_is_password;
|
||||
static char term_prompt[256];
|
||||
static void *term_readline_opaque;
|
||||
|
||||
static void term_show_prompt2(void)
|
||||
{
|
||||
term_printf("%s", term_prompt);
|
||||
term_flush();
|
||||
term_last_cmd_buf_index = 0;
|
||||
term_last_cmd_buf_size = 0;
|
||||
term_esc_state = IS_NORM;
|
||||
}
|
||||
|
||||
static void term_show_prompt(void)
|
||||
{
|
||||
term_show_prompt2();
|
||||
term_cmd_buf_index = 0;
|
||||
term_cmd_buf_size = 0;
|
||||
}
|
||||
|
||||
/* update the displayed command line */
|
||||
static void term_update(void)
|
||||
{
|
||||
int i, delta, len;
|
||||
|
||||
if (term_cmd_buf_size != term_last_cmd_buf_size ||
|
||||
memcmp(term_cmd_buf, term_last_cmd_buf, term_cmd_buf_size) != 0) {
|
||||
for(i = 0; i < term_last_cmd_buf_index; i++) {
|
||||
term_printf("\033[D");
|
||||
}
|
||||
term_cmd_buf[term_cmd_buf_size] = '\0';
|
||||
if (term_is_password) {
|
||||
len = strlen(term_cmd_buf);
|
||||
for(i = 0; i < len; i++)
|
||||
term_printf("*");
|
||||
} else {
|
||||
term_printf("%s", term_cmd_buf);
|
||||
}
|
||||
term_printf("\033[K");
|
||||
memcpy(term_last_cmd_buf, term_cmd_buf, term_cmd_buf_size);
|
||||
term_last_cmd_buf_size = term_cmd_buf_size;
|
||||
term_last_cmd_buf_index = term_cmd_buf_size;
|
||||
}
|
||||
if (term_cmd_buf_index != term_last_cmd_buf_index) {
|
||||
delta = term_cmd_buf_index - term_last_cmd_buf_index;
|
||||
if (delta > 0) {
|
||||
for(i = 0;i < delta; i++) {
|
||||
term_printf("\033[C");
|
||||
}
|
||||
} else {
|
||||
delta = -delta;
|
||||
for(i = 0;i < delta; i++) {
|
||||
term_printf("\033[D");
|
||||
}
|
||||
}
|
||||
term_last_cmd_buf_index = term_cmd_buf_index;
|
||||
}
|
||||
term_flush();
|
||||
}
|
||||
|
||||
static void term_insert_char(int ch)
|
||||
{
|
||||
if (term_cmd_buf_index < TERM_CMD_BUF_SIZE) {
|
||||
memmove(term_cmd_buf + term_cmd_buf_index + 1,
|
||||
term_cmd_buf + term_cmd_buf_index,
|
||||
term_cmd_buf_size - term_cmd_buf_index);
|
||||
term_cmd_buf[term_cmd_buf_index] = ch;
|
||||
term_cmd_buf_size++;
|
||||
term_cmd_buf_index++;
|
||||
}
|
||||
}
|
||||
|
||||
static void term_backward_char(void)
|
||||
{
|
||||
if (term_cmd_buf_index > 0) {
|
||||
term_cmd_buf_index--;
|
||||
}
|
||||
}
|
||||
|
||||
static void term_forward_char(void)
|
||||
{
|
||||
if (term_cmd_buf_index < term_cmd_buf_size) {
|
||||
term_cmd_buf_index++;
|
||||
}
|
||||
}
|
||||
|
||||
static void term_delete_char(void)
|
||||
{
|
||||
if (term_cmd_buf_index < term_cmd_buf_size) {
|
||||
memmove(term_cmd_buf + term_cmd_buf_index,
|
||||
term_cmd_buf + term_cmd_buf_index + 1,
|
||||
term_cmd_buf_size - term_cmd_buf_index - 1);
|
||||
term_cmd_buf_size--;
|
||||
}
|
||||
}
|
||||
|
||||
static void term_backspace(void)
|
||||
{
|
||||
if (term_cmd_buf_index > 0) {
|
||||
term_backward_char();
|
||||
term_delete_char();
|
||||
}
|
||||
}
|
||||
|
||||
static void term_bol(void)
|
||||
{
|
||||
term_cmd_buf_index = 0;
|
||||
}
|
||||
|
||||
static void term_eol(void)
|
||||
{
|
||||
term_cmd_buf_index = term_cmd_buf_size;
|
||||
}
|
||||
|
||||
static void term_up_char(void)
|
||||
{
|
||||
int idx;
|
||||
|
||||
if (term_hist_entry == 0)
|
||||
return;
|
||||
if (term_hist_entry == -1) {
|
||||
/* Find latest entry */
|
||||
for (idx = 0; idx < TERM_MAX_CMDS; idx++) {
|
||||
if (term_history[idx] == NULL)
|
||||
break;
|
||||
}
|
||||
term_hist_entry = idx;
|
||||
}
|
||||
term_hist_entry--;
|
||||
if (term_hist_entry >= 0) {
|
||||
pstrcpy(term_cmd_buf, sizeof(term_cmd_buf),
|
||||
term_history[term_hist_entry]);
|
||||
term_cmd_buf_index = term_cmd_buf_size = strlen(term_cmd_buf);
|
||||
}
|
||||
}
|
||||
|
||||
static void term_down_char(void)
|
||||
{
|
||||
if (term_hist_entry == TERM_MAX_CMDS - 1 || term_hist_entry == -1)
|
||||
return;
|
||||
if (term_history[++term_hist_entry] != NULL) {
|
||||
pstrcpy(term_cmd_buf, sizeof(term_cmd_buf),
|
||||
term_history[term_hist_entry]);
|
||||
} else {
|
||||
term_hist_entry = -1;
|
||||
}
|
||||
term_cmd_buf_index = term_cmd_buf_size = strlen(term_cmd_buf);
|
||||
}
|
||||
|
||||
static void term_hist_add(const char *cmdline)
|
||||
{
|
||||
char *hist_entry, *new_entry;
|
||||
int idx;
|
||||
|
||||
if (cmdline[0] == '\0')
|
||||
return;
|
||||
new_entry = NULL;
|
||||
if (term_hist_entry != -1) {
|
||||
/* We were editing an existing history entry: replace it */
|
||||
hist_entry = term_history[term_hist_entry];
|
||||
idx = term_hist_entry;
|
||||
if (strcmp(hist_entry, cmdline) == 0) {
|
||||
goto same_entry;
|
||||
}
|
||||
}
|
||||
/* Search cmdline in history buffers */
|
||||
for (idx = 0; idx < TERM_MAX_CMDS; idx++) {
|
||||
hist_entry = term_history[idx];
|
||||
if (hist_entry == NULL)
|
||||
break;
|
||||
if (strcmp(hist_entry, cmdline) == 0) {
|
||||
same_entry:
|
||||
new_entry = hist_entry;
|
||||
/* Put this entry at the end of history */
|
||||
memmove(&term_history[idx], &term_history[idx + 1],
|
||||
&term_history[TERM_MAX_CMDS] - &term_history[idx + 1]);
|
||||
term_history[TERM_MAX_CMDS - 1] = NULL;
|
||||
for (; idx < TERM_MAX_CMDS; idx++) {
|
||||
if (term_history[idx] == NULL)
|
||||
break;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (idx == TERM_MAX_CMDS) {
|
||||
/* Need to get one free slot */
|
||||
free(term_history[0]);
|
||||
memcpy(term_history, &term_history[1],
|
||||
&term_history[TERM_MAX_CMDS] - &term_history[1]);
|
||||
term_history[TERM_MAX_CMDS - 1] = NULL;
|
||||
idx = TERM_MAX_CMDS - 1;
|
||||
}
|
||||
if (new_entry == NULL)
|
||||
new_entry = strdup(cmdline);
|
||||
term_history[idx] = new_entry;
|
||||
term_hist_entry = -1;
|
||||
}
|
||||
|
||||
/* completion support */
|
||||
|
||||
void add_completion(const char *str)
|
||||
{
|
||||
if (nb_completions < NB_COMPLETIONS_MAX) {
|
||||
completions[nb_completions++] = qemu_strdup(str);
|
||||
}
|
||||
}
|
||||
|
||||
static void term_completion(void)
|
||||
{
|
||||
int len, i, j, max_width, nb_cols;
|
||||
char *cmdline;
|
||||
|
||||
nb_completions = 0;
|
||||
|
||||
cmdline = qemu_malloc(term_cmd_buf_index + 1);
|
||||
if (!cmdline)
|
||||
return;
|
||||
memcpy(cmdline, term_cmd_buf, term_cmd_buf_index);
|
||||
cmdline[term_cmd_buf_index] = '\0';
|
||||
readline_find_completion(cmdline);
|
||||
qemu_free(cmdline);
|
||||
|
||||
/* no completion found */
|
||||
if (nb_completions <= 0)
|
||||
return;
|
||||
if (nb_completions == 1) {
|
||||
len = strlen(completions[0]);
|
||||
for(i = completion_index; i < len; i++) {
|
||||
term_insert_char(completions[0][i]);
|
||||
}
|
||||
/* extra space for next argument. XXX: make it more generic */
|
||||
if (len > 0 && completions[0][len - 1] != '/')
|
||||
term_insert_char(' ');
|
||||
} else {
|
||||
term_printf("\n");
|
||||
max_width = 0;
|
||||
for(i = 0; i < nb_completions; i++) {
|
||||
len = strlen(completions[i]);
|
||||
if (len > max_width)
|
||||
max_width = len;
|
||||
}
|
||||
max_width += 2;
|
||||
if (max_width < 10)
|
||||
max_width = 10;
|
||||
else if (max_width > 80)
|
||||
max_width = 80;
|
||||
nb_cols = 80 / max_width;
|
||||
j = 0;
|
||||
for(i = 0; i < nb_completions; i++) {
|
||||
term_printf("%-*s", max_width, completions[i]);
|
||||
if (++j == nb_cols || i == (nb_completions - 1)) {
|
||||
term_printf("\n");
|
||||
j = 0;
|
||||
}
|
||||
}
|
||||
term_show_prompt2();
|
||||
}
|
||||
}
|
||||
|
||||
/* return true if command handled */
|
||||
void readline_handle_byte(int ch)
|
||||
{
|
||||
switch(term_esc_state) {
|
||||
case IS_NORM:
|
||||
switch(ch) {
|
||||
case 1:
|
||||
term_bol();
|
||||
break;
|
||||
case 4:
|
||||
term_delete_char();
|
||||
break;
|
||||
case 5:
|
||||
term_eol();
|
||||
break;
|
||||
case 9:
|
||||
term_completion();
|
||||
break;
|
||||
case 10:
|
||||
case 13:
|
||||
term_cmd_buf[term_cmd_buf_size] = '\0';
|
||||
if (!term_is_password)
|
||||
term_hist_add(term_cmd_buf);
|
||||
term_printf("\n");
|
||||
/* NOTE: readline_start can be called here */
|
||||
term_readline_func(term_readline_opaque, term_cmd_buf);
|
||||
break;
|
||||
case 27:
|
||||
term_esc_state = IS_ESC;
|
||||
break;
|
||||
case 127:
|
||||
case 8:
|
||||
term_backspace();
|
||||
break;
|
||||
case 155:
|
||||
term_esc_state = IS_CSI;
|
||||
break;
|
||||
default:
|
||||
if (ch >= 32) {
|
||||
term_insert_char(ch);
|
||||
}
|
||||
break;
|
||||
}
|
||||
break;
|
||||
case IS_ESC:
|
||||
if (ch == '[') {
|
||||
term_esc_state = IS_CSI;
|
||||
term_esc_param = 0;
|
||||
} else {
|
||||
term_esc_state = IS_NORM;
|
||||
}
|
||||
break;
|
||||
case IS_CSI:
|
||||
switch(ch) {
|
||||
case 'A':
|
||||
case 'F':
|
||||
term_up_char();
|
||||
break;
|
||||
case 'B':
|
||||
case 'E':
|
||||
term_down_char();
|
||||
break;
|
||||
case 'D':
|
||||
term_backward_char();
|
||||
break;
|
||||
case 'C':
|
||||
term_forward_char();
|
||||
break;
|
||||
case '0' ... '9':
|
||||
term_esc_param = term_esc_param * 10 + (ch - '0');
|
||||
goto the_end;
|
||||
case '~':
|
||||
switch(term_esc_param) {
|
||||
case 1:
|
||||
term_bol();
|
||||
break;
|
||||
case 3:
|
||||
term_delete_char();
|
||||
break;
|
||||
case 4:
|
||||
term_eol();
|
||||
break;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
term_esc_state = IS_NORM;
|
||||
the_end:
|
||||
break;
|
||||
}
|
||||
term_update();
|
||||
}
|
||||
|
||||
void readline_start(const char *prompt, int is_password,
|
||||
ReadLineFunc *readline_func, void *opaque)
|
||||
{
|
||||
pstrcpy(term_prompt, sizeof(term_prompt), prompt);
|
||||
term_readline_func = readline_func;
|
||||
term_readline_opaque = opaque;
|
||||
term_is_password = is_password;
|
||||
term_show_prompt();
|
||||
}
|
||||
|
||||
const char *readline_get_history(unsigned int index)
|
||||
{
|
||||
if (index >= TERM_MAX_CMDS)
|
||||
return NULL;
|
||||
return term_history[index];
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user