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Leonmmcoset
2026-04-11 17:13:58 +08:00
parent 25149b3ba2
commit 32637ee60b
3 changed files with 393 additions and 28 deletions
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321
clks/kernel/shell.c
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@@ -7,18 +7,29 @@
#include <clks/tty.h>
#include <clks/types.h>
#define CLKS_SHELL_LINE_MAX 192U
#define CLKS_SHELL_CMD_MAX 32U
#define CLKS_SHELL_ARG_MAX 160U
#define CLKS_SHELL_NAME_MAX 96U
#define CLKS_SHELL_PATH_MAX 192U
#define CLKS_SHELL_CAT_LIMIT 512U
#define CLKS_SHELL_INPUT_BUDGET 128U
#define CLKS_SHELL_CLEAR_LINES 56U
#define CLKS_SHELL_LINE_MAX 192U
#define CLKS_SHELL_CMD_MAX 32U
#define CLKS_SHELL_ARG_MAX 160U
#define CLKS_SHELL_NAME_MAX 96U
#define CLKS_SHELL_PATH_MAX 192U
#define CLKS_SHELL_CAT_LIMIT 512U
#define CLKS_SHELL_INPUT_BUDGET 128U
#define CLKS_SHELL_CLEAR_LINES 56U
#define CLKS_SHELL_HISTORY_MAX 16U
#define CLKS_SHELL_PROMPT_TEXT "cleonos> "
static clks_bool clks_shell_ready = CLKS_FALSE;
static char clks_shell_line[CLKS_SHELL_LINE_MAX];
static usize clks_shell_line_len = 0U;
static usize clks_shell_cursor = 0U;
static usize clks_shell_rendered_len = 0U;
static char clks_shell_history[CLKS_SHELL_HISTORY_MAX][CLKS_SHELL_LINE_MAX];
static u32 clks_shell_history_count = 0U;
static i32 clks_shell_history_nav = -1;
static char clks_shell_nav_saved_line[CLKS_SHELL_LINE_MAX];
static usize clks_shell_nav_saved_len = 0U;
static usize clks_shell_nav_saved_cursor = 0U;
static clks_bool clks_shell_is_space(char ch) {
return (ch == ' ' || ch == '\t' || ch == '\r' || ch == '\n') ? CLKS_TRUE : CLKS_FALSE;
@@ -50,14 +61,185 @@ static void clks_shell_writeln(const char *text) {
}
static void clks_shell_prompt(void) {
clks_shell_write("cleonos> ");
clks_shell_write(CLKS_SHELL_PROMPT_TEXT);
}
static void clks_shell_copy_line(char *dst, usize dst_size, const char *src) {
usize i = 0U;
if (dst == CLKS_NULL || src == CLKS_NULL || dst_size == 0U) {
return;
}
while (i + 1U < dst_size && src[i] != '\0') {
dst[i] = src[i];
i++;
}
dst[i] = '\0';
}
static void clks_shell_history_cancel_nav(void) {
clks_shell_history_nav = -1;
clks_shell_nav_saved_len = 0U;
clks_shell_nav_saved_cursor = 0U;
clks_shell_nav_saved_line[0] = '\0';
}
static void clks_shell_reset_line(void) {
clks_shell_line_len = 0U;
clks_shell_cursor = 0U;
clks_shell_rendered_len = 0U;
clks_shell_line[0] = '\0';
}
static void clks_shell_load_line(const char *line) {
if (line == CLKS_NULL) {
clks_shell_reset_line();
return;
}
clks_shell_copy_line(clks_shell_line, sizeof(clks_shell_line), line);
clks_shell_line_len = clks_strlen(clks_shell_line);
clks_shell_cursor = clks_shell_line_len;
}
static void clks_shell_render_line(void) {
usize i;
if (clks_shell_ready == CLKS_FALSE) {
return;
}
clks_shell_write_char('\r');
clks_shell_prompt();
for (i = 0U; i < clks_shell_line_len; i++) {
clks_shell_write_char(clks_shell_line[i]);
}
for (i = clks_shell_line_len; i < clks_shell_rendered_len; i++) {
clks_shell_write_char(' ');
}
clks_shell_write_char('\r');
clks_shell_prompt();
for (i = 0U; i < clks_shell_cursor; i++) {
clks_shell_write_char(clks_shell_line[i]);
}
clks_shell_rendered_len = clks_shell_line_len;
}
static clks_bool clks_shell_line_has_non_space(const char *line) {
usize i = 0U;
if (line == CLKS_NULL) {
return CLKS_FALSE;
}
while (line[i] != '\0') {
if (clks_shell_is_space(line[i]) == CLKS_FALSE) {
return CLKS_TRUE;
}
i++;
}
return CLKS_FALSE;
}
static void clks_shell_history_push(const char *line) {
if (clks_shell_line_has_non_space(line) == CLKS_FALSE) {
clks_shell_history_cancel_nav();
return;
}
if (clks_shell_history_count > 0U &&
clks_strcmp(clks_shell_history[clks_shell_history_count - 1U], line) == 0) {
clks_shell_history_cancel_nav();
return;
}
if (clks_shell_history_count < CLKS_SHELL_HISTORY_MAX) {
clks_shell_copy_line(
clks_shell_history[clks_shell_history_count],
sizeof(clks_shell_history[clks_shell_history_count]),
line
);
clks_shell_history_count++;
} else {
u32 i;
for (i = 1U; i < CLKS_SHELL_HISTORY_MAX; i++) {
clks_memcpy(
clks_shell_history[i - 1U],
clks_shell_history[i],
CLKS_SHELL_LINE_MAX
);
}
clks_shell_copy_line(
clks_shell_history[CLKS_SHELL_HISTORY_MAX - 1U],
sizeof(clks_shell_history[CLKS_SHELL_HISTORY_MAX - 1U]),
line
);
}
clks_shell_history_cancel_nav();
}
static void clks_shell_history_apply_current(void) {
if (clks_shell_history_nav >= 0) {
clks_shell_load_line(clks_shell_history[(u32)clks_shell_history_nav]);
} else {
clks_shell_copy_line(clks_shell_line, sizeof(clks_shell_line), clks_shell_nav_saved_line);
clks_shell_line_len = clks_shell_nav_saved_len;
if (clks_shell_line_len > CLKS_SHELL_LINE_MAX - 1U) {
clks_shell_line_len = CLKS_SHELL_LINE_MAX - 1U;
clks_shell_line[clks_shell_line_len] = '\0';
}
clks_shell_cursor = clks_shell_nav_saved_cursor;
if (clks_shell_cursor > clks_shell_line_len) {
clks_shell_cursor = clks_shell_line_len;
}
}
clks_shell_render_line();
}
static void clks_shell_history_up(void) {
if (clks_shell_history_count == 0U) {
return;
}
if (clks_shell_history_nav < 0) {
clks_shell_copy_line(clks_shell_nav_saved_line, sizeof(clks_shell_nav_saved_line), clks_shell_line);
clks_shell_nav_saved_len = clks_shell_line_len;
clks_shell_nav_saved_cursor = clks_shell_cursor;
clks_shell_history_nav = (i32)clks_shell_history_count - 1;
} else if (clks_shell_history_nav > 0) {
clks_shell_history_nav--;
}
clks_shell_history_apply_current();
}
static void clks_shell_history_down(void) {
if (clks_shell_history_nav < 0) {
return;
}
if ((u32)clks_shell_history_nav + 1U < clks_shell_history_count) {
clks_shell_history_nav++;
} else {
clks_shell_history_nav = -1;
}
clks_shell_history_apply_current();
}
static void clks_shell_trim(char *line) {
usize start = 0U;
usize i = 0U;
@@ -215,6 +397,8 @@ static void clks_shell_cmd_help(void) {
clks_shell_writeln(" cat <file>");
clks_shell_writeln(" exec <path|name>");
clks_shell_writeln(" clear");
clks_shell_writeln(" kbdstat");
clks_shell_writeln("edit keys: Left/Right, Home/End, Up/Down history");
}
static void clks_shell_cmd_ls(const char *arg) {
@@ -309,6 +493,14 @@ static void clks_shell_cmd_clear(void) {
}
}
static void clks_shell_cmd_kbdstat(void) {
clks_shell_writeln("kbd stats emitted to kernel log");
clks_log_hex(CLKS_LOG_INFO, "KBD", "BUFFERED", clks_keyboard_buffered_count());
clks_log_hex(CLKS_LOG_INFO, "KBD", "PUSHED", clks_keyboard_push_count());
clks_log_hex(CLKS_LOG_INFO, "KBD", "POPPED", clks_keyboard_pop_count());
clks_log_hex(CLKS_LOG_INFO, "KBD", "DROPPED", clks_keyboard_drop_count());
}
static void clks_shell_execute_line(const char *line) {
char line_buf[CLKS_SHELL_LINE_MAX];
char cmd[CLKS_SHELL_CMD_MAX];
@@ -358,6 +550,11 @@ static void clks_shell_execute_line(const char *line) {
return;
}
if (clks_shell_streq(cmd, "kbdstat") == CLKS_TRUE) {
clks_shell_cmd_kbdstat();
return;
}
clks_shell_writeln("unknown command; type 'help'");
}
@@ -369,17 +566,85 @@ static void clks_shell_handle_char(char ch) {
if (ch == '\n') {
clks_shell_write_char('\n');
clks_shell_line[clks_shell_line_len] = '\0';
clks_shell_history_push(clks_shell_line);
clks_shell_execute_line(clks_shell_line);
clks_shell_reset_line();
clks_shell_history_cancel_nav();
clks_shell_prompt();
return;
}
if (ch == '\b' || ch == 127) {
if (clks_shell_line_len > 0U) {
if (ch == CLKS_KEY_UP) {
clks_shell_history_up();
return;
}
if (ch == CLKS_KEY_DOWN) {
clks_shell_history_down();
return;
}
if (ch == CLKS_KEY_LEFT) {
if (clks_shell_cursor > 0U) {
clks_shell_cursor--;
clks_shell_render_line();
}
return;
}
if (ch == CLKS_KEY_RIGHT) {
if (clks_shell_cursor < clks_shell_line_len) {
clks_shell_cursor++;
clks_shell_render_line();
}
return;
}
if (ch == CLKS_KEY_HOME) {
if (clks_shell_cursor != 0U) {
clks_shell_cursor = 0U;
clks_shell_render_line();
}
return;
}
if (ch == CLKS_KEY_END) {
if (clks_shell_cursor != clks_shell_line_len) {
clks_shell_cursor = clks_shell_line_len;
clks_shell_render_line();
}
return;
}
if (ch == '\b') {
if (clks_shell_cursor > 0U && clks_shell_line_len > 0U) {
usize i;
clks_shell_history_cancel_nav();
for (i = clks_shell_cursor - 1U; i < clks_shell_line_len; i++) {
clks_shell_line[i] = clks_shell_line[i + 1U];
}
clks_shell_line_len--;
clks_shell_line[clks_shell_line_len] = '\0';
clks_shell_write_char('\b');
clks_shell_cursor--;
clks_shell_render_line();
}
return;
}
if (ch == CLKS_KEY_DELETE) {
if (clks_shell_cursor < clks_shell_line_len) {
usize i;
clks_shell_history_cancel_nav();
for (i = clks_shell_cursor; i < clks_shell_line_len; i++) {
clks_shell_line[i] = clks_shell_line[i + 1U];
}
clks_shell_line_len--;
clks_shell_render_line();
}
return;
}
@@ -396,13 +661,35 @@ static void clks_shell_handle_char(char ch) {
return;
}
clks_shell_line[clks_shell_line_len++] = ch;
clks_shell_line[clks_shell_line_len] = '\0';
clks_shell_write_char(ch);
}
clks_shell_history_cancel_nav();
if (clks_shell_cursor == clks_shell_line_len) {
clks_shell_line[clks_shell_line_len++] = ch;
clks_shell_line[clks_shell_line_len] = '\0';
clks_shell_cursor = clks_shell_line_len;
clks_shell_write_char(ch);
clks_shell_rendered_len = clks_shell_line_len;
return;
}
{
usize i;
for (i = clks_shell_line_len; i > clks_shell_cursor; i--) {
clks_shell_line[i] = clks_shell_line[i - 1U];
}
clks_shell_line[clks_shell_cursor] = ch;
clks_shell_line_len++;
clks_shell_cursor++;
clks_shell_line[clks_shell_line_len] = '\0';
clks_shell_render_line();
}
}
void clks_shell_init(void) {
clks_shell_reset_line();
clks_shell_history_count = 0U;
clks_shell_history_cancel_nav();
if (clks_tty_ready() == CLKS_FALSE) {
clks_shell_ready = CLKS_FALSE;