- not true viewing if length prompt less terminal width
*/
-#include <sys/ioctl.h>
-#include "busybox.h"
+#include "libbb.h"
/* FIXME: obsolete CONFIG item? */
#define ENABLE_FEATURE_TAB_COMPLETION 0
#define ENABLE_FEATURE_USERNAME_COMPLETION 0
#define ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT 0
-#define ENABLE_FEATURE_CLEAN_UP 0
#endif /* TEST */
#endif
#define ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR \
-(ENABLE_FEATURE_USERNAME_COMPLETION || ENABLE_FEATURE_EDITING_FANCY_PROMPT)
+ (ENABLE_FEATURE_USERNAME_COMPLETION || ENABLE_FEATURE_EDITING_FANCY_PROMPT)
+#define USE_FEATURE_GETUSERNAME_AND_HOMEDIR(...)
+#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
+#undef USE_FEATURE_GETUSERNAME_AND_HOMEDIR
+#define USE_FEATURE_GETUSERNAME_AND_HOMEDIR(...) __VA_ARGS__
+#endif
+enum {
+ /* We use int16_t for positions, need to limit line len */
+ MAX_LINELEN = CONFIG_FEATURE_EDITING_MAX_LEN < 0x7ff0
+ ? CONFIG_FEATURE_EDITING_MAX_LEN
+ : 0x7ff0
+};
-static line_input_t *state;
+#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
+static const char null_str[] ALIGN1 = "";
+#endif
-static struct termios initial_settings, new_settings;
+/* We try to minimize both static and stack usage. */
+struct lineedit_statics {
+ line_input_t *state;
-static volatile unsigned cmdedit_termw = 80; /* actual terminal width */
+ volatile unsigned cmdedit_termw; /* = 80; */ /* actual terminal width */
+ sighandler_t previous_SIGWINCH_handler;
-static int cmdedit_x; /* real x terminal position */
-static int cmdedit_y; /* pseudoreal y terminal position */
-static int cmdedit_prmt_len; /* length of prompt (without colors etc) */
+ unsigned cmdedit_x; /* real x terminal position */
+ unsigned cmdedit_y; /* pseudoreal y terminal position */
+ unsigned cmdedit_prmt_len; /* length of prompt (without colors etc) */
-static unsigned cursor;
-static unsigned command_len;
-static char *command_ps;
-static const char *cmdedit_prompt;
+ unsigned cursor;
+ unsigned command_len;
+ char *command_ps;
+ const char *cmdedit_prompt;
#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
-static char *hostname_buf;
-static int num_ok_lines = 1;
+ int num_ok_lines; /* = 1; */
#endif
#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
-static char *user_buf = (char*)"";
-static char *home_pwd_buf = (char*)"";
+ char *user_buf;
+ char *home_pwd_buf; /* = (char*)null_str; */
#endif
#if ENABLE_FEATURE_TAB_COMPLETION
-static int my_uid;
-static int my_gid;
+ char **matches;
+ unsigned num_matches;
#endif
+#if ENABLE_FEATURE_EDITING_VI
+#define DELBUFSIZ 128
+ char *delptr;
+ smallint newdelflag; /* whether delbuf should be reused yet */
+ char delbuf[DELBUFSIZ]; /* a place to store deleted characters */
+#endif
+
+ /* Formerly these were big buffers on stack: */
+#if ENABLE_FEATURE_TAB_COMPLETION
+ char exe_n_cwd_tab_completion__dirbuf[MAX_LINELEN];
+ char input_tab__matchBuf[MAX_LINELEN];
+ int16_t find_match__int_buf[MAX_LINELEN + 1]; /* need to have 9 bits at least */
+ int16_t find_match__pos_buf[MAX_LINELEN + 1];
+#endif
+};
+
+/* See lineedit_ptr_hack.c */
+extern struct lineedit_statics *const lineedit_ptr_to_statics;
+
+#define S (*lineedit_ptr_to_statics)
+#define state (S.state )
+#define cmdedit_termw (S.cmdedit_termw )
+#define previous_SIGWINCH_handler (S.previous_SIGWINCH_handler)
+#define cmdedit_x (S.cmdedit_x )
+#define cmdedit_y (S.cmdedit_y )
+#define cmdedit_prmt_len (S.cmdedit_prmt_len)
+#define cursor (S.cursor )
+#define command_len (S.command_len )
+#define command_ps (S.command_ps )
+#define cmdedit_prompt (S.cmdedit_prompt )
+#define num_ok_lines (S.num_ok_lines )
+#define user_buf (S.user_buf )
+#define home_pwd_buf (S.home_pwd_buf )
+#define matches (S.matches )
+#define num_matches (S.num_matches )
+#define delptr (S.delptr )
+#define newdelflag (S.newdelflag )
+#define delbuf (S.delbuf )
+
+#define INIT_S() do { \
+ (*(struct lineedit_statics**)&lineedit_ptr_to_statics) = xzalloc(sizeof(S)); \
+ barrier(); \
+ cmdedit_termw = 80; \
+ USE_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines = 1;) \
+ USE_FEATURE_GETUSERNAME_AND_HOMEDIR(home_pwd_buf = (char*)null_str;) \
+} while (0)
+static void deinit_S(void)
+{
+#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
+ /* This one is allocated only if FANCY_PROMPT is on
+ * (otherwise it points to verbatim prompt (NOT malloced) */
+ free((char*)cmdedit_prompt);
+#endif
+#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
+ free(user_buf);
+ if (home_pwd_buf != null_str)
+ free(home_pwd_buf);
+#endif
+ free(lineedit_ptr_to_statics);
+}
+#define DEINIT_S() deinit_S()
+
+
/* Put 'command_ps[cursor]', cursor++.
* Advance cursor on screen. If we reached right margin, scroll text up
* and remove terminal margin effect by printing 'next_char' */
+#define HACK_FOR_WRONG_WIDTH 1
+#if HACK_FOR_WRONG_WIDTH
+static void cmdedit_set_out_char(void)
+#define cmdedit_set_out_char(next_char) cmdedit_set_out_char()
+#else
static void cmdedit_set_out_char(int next_char)
+#endif
{
int c = (unsigned char)command_ps[cursor];
} else
#endif
{
- if (initial_settings.c_lflag & ECHO)
- putchar(c);
+ bb_putchar(c);
}
if (++cmdedit_x >= cmdedit_termw) {
/* terminal is scrolled down */
cmdedit_y++;
cmdedit_x = 0;
+#if HACK_FOR_WRONG_WIDTH
+ /* This works better if our idea of term width is wrong
+ * and it is actually wider (often happens on serial lines).
+ * Printing CR,LF *forces* cursor to next line.
+ * OTOH if terminal width is correct AND terminal does NOT
+ * have automargin (IOW: it is moving cursor to next line
+ * by itself (which is wrong for VT-10x terminals)),
+ * this will break things: there will be one extra empty line */
+ puts("\r"); /* + implicit '\n' */
+#else
+ /* Works ok only if cmdedit_termw is correct */
/* destroy "(auto)margin" */
- putchar(next_char);
- putchar('\b');
+ bb_putchar(next_char);
+ bb_putchar('\b');
+#endif
}
// Huh? What if command_ps[cursor] == '\0' (we are at the end already?)
cursor++;
{
input_end();
if (cmdedit_x)
- putchar('\n');
+ bb_putchar('\n');
}
static void beep(void)
{
- putchar('\007');
+ bb_putchar('\007');
}
/* Move back one character */
if (cmdedit_x >= num) {
cmdedit_x -= num;
if (num <= 4) {
- printf("\b\b\b\b" + (4-num));
+ /* This is longer by 5 bytes on x86.
+ * Also gets miscompiled for ARM users
+ * (busybox.net/bugs/view.php?id=2274).
+ * printf(("\b\b\b\b" + 4) - num);
+ * return;
+ */
+ do {
+ bb_putchar('\b');
+ } while (--num);
return;
}
printf("\033[%uD", num);
/* Need to go one or more lines up */
num -= cmdedit_x;
- count_y = 1 + (num / cmdedit_termw);
- cmdedit_y -= count_y;
- cmdedit_x = cmdedit_termw * count_y - num;
+ {
+ unsigned w = cmdedit_termw; /* volatile var */
+ count_y = 1 + (num / w);
+ cmdedit_y -= count_y;
+ cmdedit_x = w * count_y - num;
+ }
/* go to 1st column; go up; go to correct column */
printf("\r" "\033[%dA" "\033[%dC", count_y, cmdedit_x);
}
static void put_prompt(void)
{
out1str(cmdedit_prompt);
- cmdedit_x = cmdedit_prmt_len;
cursor = 0;
-// Huh? what if cmdedit_prmt_len >= width?
- cmdedit_y = 0; /* new quasireal y */
+ {
+ unsigned w = cmdedit_termw; /* volatile var */
+ cmdedit_y = cmdedit_prmt_len / w; /* new quasireal y */
+ cmdedit_x = cmdedit_prmt_len % w;
+ }
}
/* draw prompt, editor line, and clear tail */
{
if (y > 0) /* up to start y */
printf("\033[%dA", y);
- putchar('\r');
+ bb_putchar('\r');
put_prompt();
input_end(); /* rewrite */
printf("\033[J"); /* erase after cursor */
input_backward(back_cursor);
}
-#if ENABLE_FEATURE_EDITING_VI
-#define DELBUFSIZ 128
-static char *delbuf; /* a (malloced) place to store deleted characters */
-static char *delp;
-static char newdelflag; /* whether delbuf should be reused yet */
-#endif
-
/* Delete the char in front of the cursor, optionally saving it
* for later putback */
+#if !ENABLE_FEATURE_EDITING_VI
+static void input_delete(void)
+#define input_delete(save) input_delete()
+#else
static void input_delete(int save)
+#endif
{
int j = cursor;
- if (j == command_len)
+ if (j == (int)command_len)
return;
#if ENABLE_FEATURE_EDITING_VI
if (save) {
if (newdelflag) {
- if (!delbuf)
- delbuf = malloc(DELBUFSIZ);
- /* safe if malloc fails */
- delp = delbuf;
+ delptr = delbuf;
newdelflag = 0;
}
- if (delbuf && (delp - delbuf < DELBUFSIZ))
- *delp++ = command_ps[j];
+ if ((delptr - delbuf) < DELBUFSIZ)
+ *delptr++ = command_ps[j];
}
#endif
static void put(void)
{
int ocursor;
- int j = delp - delbuf;
+ int j = delptr - delbuf;
if (j == 0)
return;
cmdedit_set_out_char(command_ps[cursor + 1]);
}
-
#if ENABLE_FEATURE_TAB_COMPLETION
-static char **matches;
-static unsigned num_matches;
-
static void free_tab_completion_data(void)
{
if (matches) {
if (with_shash_flg) { /* "~/..." or "~user/..." */
char *sav_ud = ud - 1;
- char *home = 0;
- char *temp;
+ char *home = NULL;
if (*ud == '/') { /* "~/..." */
home = home_pwd_buf;
} else {
/* "~user/..." */
+ char *temp;
temp = strchr(ud, '/');
- *temp = 0; /* ~user\0 */
+ *temp = '\0'; /* ~user\0 */
entry = getpwnam(ud);
*temp = '/'; /* restore ~user/... */
ud = temp;
home = entry->pw_dir;
}
if (home) {
- if ((userlen + strlen(home) + 1) < BUFSIZ) {
- char temp2[BUFSIZ]; /* argument size */
-
+ if ((userlen + strlen(home) + 1) < MAX_LINELEN) {
/* /home/user/... */
- sprintf(temp2, "%s%s", home, ud);
- strcpy(sav_ud, temp2);
+ sprintf(sav_ud, "%s%s", home, ud);
}
}
} else {
/* "~[^/]*" */
- setpwent();
+ /* Using _r function to avoid pulling in static buffers */
+ char line_buff[256];
+ struct passwd pwd;
+ struct passwd *result;
- while ((entry = getpwent()) != NULL) {
+ setpwent();
+ while (!getpwent_r(&pwd, line_buff, sizeof(line_buff), &result)) {
/* Null usernames should result in all users as possible completions. */
- if ( /*!userlen || */ !strncmp(ud, entry->pw_name, userlen)) {
- add_match(xasprintf("~%s/", entry->pw_name));
+ if (/*!userlen || */ strncmp(ud, pwd.pw_name, userlen) == 0) {
+ add_match(xasprintf("~%s/", pwd.pw_name));
}
}
-
endpwent();
}
}
{
DIR *dir;
struct dirent *next;
- char dirbuf[BUFSIZ];
struct stat st;
char *path1[1];
char **paths = path1;
int i;
char *found;
char *pfind = strrchr(command, '/');
+/* char dirbuf[MAX_LINELEN]; */
+#define dirbuf (S.exe_n_cwd_tab_completion__dirbuf)
npaths = 1;
path1[0] = (char*)".";
for (i = 0; i < npaths; i++) {
dir = opendir(paths[i]);
- if (!dir) /* Don't print an error */
- continue;
+ if (!dir)
+ continue; /* don't print an error */
while ((next = readdir(dir)) != NULL) {
int len1;
if (strncmp(str_found, pfind, strlen(pfind)))
continue;
/* not see .name without .match */
- if (*str_found == '.' && *pfind == 0) {
+ if (*str_found == '.' && *pfind == '\0') {
if (NOT_LONE_CHAR(paths[i], '/') || str_found[1])
continue;
str_found = ""; /* only "/" */
}
found = concat_path_file(paths[i], str_found);
- /* hmm, remover in progress? */
- if (stat(found, &st) < 0)
+ /* hmm, remove in progress? */
+ /* NB: stat() first so that we see is it a directory;
+ * but if that fails, use lstat() so that
+ * we still match dangling links */
+ if (stat(found, &st) && lstat(found, &st))
goto cont;
/* find with dirs? */
if (paths[i] != dirbuf)
- strcpy(found, next->d_name); /* only name */
+ strcpy(found, next->d_name); /* only name */
len1 = strlen(found);
found = xrealloc(found, len1 + 2);
found[len1+1] = '\0';
if (S_ISDIR(st.st_mode)) {
- /* name is directory */
+ /* name is a directory */
if (found[len1-1] != '/') {
found[len1] = '/';
}
closedir(dir);
}
if (paths != path1) {
- free(paths[0]); /* allocated memory only in first member */
+ free(paths[0]); /* allocated memory is only in first member */
free(paths);
}
+#undef dirbuf
}
#define QUOT (UCHAR_MAX+1)
-#define collapse_pos(is, in) { \
- memmove(int_buf+(is), int_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); \
- memmove(pos_buf+(is), pos_buf+(in), (BUFSIZ+1-(is)-(in))*sizeof(int)); }
+#define collapse_pos(is, in) do { \
+ memmove(int_buf+(is), int_buf+(in), (MAX_LINELEN+1-(is)-(in)) * sizeof(pos_buf[0])); \
+ memmove(pos_buf+(is), pos_buf+(in), (MAX_LINELEN+1-(is)-(in)) * sizeof(pos_buf[0])); \
+} while (0)
static int find_match(char *matchBuf, int *len_with_quotes)
{
int i, j;
int command_mode;
int c, c2;
- int int_buf[BUFSIZ + 1];
- int pos_buf[BUFSIZ + 1];
+/* int16_t int_buf[MAX_LINELEN + 1]; */
+/* int16_t pos_buf[MAX_LINELEN + 1]; */
+#define int_buf (S.find_match__int_buf)
+#define pos_buf (S.find_match__pos_buf)
/* set to integer dimension characters and own positions */
for (i = 0;; i++) {
for (i = 0; int_buf[i]; i++)
if (int_buf[i] == ' ' || int_buf[i] == '<' || int_buf[i] == '>') {
if (int_buf[i] == ' ' && command_mode == FIND_EXE_ONLY
- && matchBuf[pos_buf[0]]=='c'
- && matchBuf[pos_buf[1]]=='d'
+ && matchBuf[pos_buf[0]] == 'c'
+ && matchBuf[pos_buf[1]] == 'd'
) {
command_mode = FIND_DIR_ONLY;
} else {
matchBuf[c++] = matchBuf[pos_buf[i]];
j = pos_buf[i] + 1;
}
- matchBuf[c] = 0;
- /* old lenght matchBuf with quotes symbols */
+ matchBuf[c] = '\0';
+ /* old length matchBuf with quotes symbols */
*len_with_quotes = j ? j - pos_buf[0] : 0;
return command_mode;
+#undef int_buf
+#undef pos_buf
}
/*
printf("%s%-*s", matches[n],
(int)(column_width - strlen(matches[n])), "");
}
- printf("%s\n", matches[n]);
+ puts(matches[n]);
}
}
return s;
}
-static int match_compare(const void *a, const void *b)
-{
- return strcmp(*(char**)a, *(char**)b);
-}
-
/* Do TAB completion */
-static void input_tab(int *lastWasTab)
+static void input_tab(smallint *lastWasTab)
{
if (!(state->flags & TAB_COMPLETION))
return;
if (!*lastWasTab) {
char *tmp, *tmp1;
- int len_found;
- char matchBuf[BUFSIZ];
+ size_t len_found;
+/* char matchBuf[MAX_LINELEN]; */
+#define matchBuf (S.input_tab__matchBuf)
int find_type;
int recalc_pos;
exe_n_cwd_tab_completion(matchBuf, find_type);
/* Sort, then remove any duplicates found */
if (matches) {
- int i, n = 0;
- qsort(matches, num_matches, sizeof(char*), match_compare);
+ unsigned i;
+ int n = 0;
+ qsort_string_vector(matches, num_matches);
for (i = 0; i < num_matches - 1; ++i) {
if (matches[i] && matches[i+1]) { /* paranoia */
if (strcmp(matches[i], matches[i+1]) == 0) {
}
len_found = strlen(tmp);
/* have space to placed match? */
- if ((len_found - strlen(matchBuf) + command_len) < BUFSIZ) {
+ if ((len_found - strlen(matchBuf) + command_len) < MAX_LINELEN) {
/* before word for match */
- command_ps[cursor - recalc_pos] = 0;
+ command_ps[cursor - recalc_pos] = '\0';
/* save tail line */
strcpy(matchBuf, command_ps + cursor);
/* add match */
redraw(cmdedit_y, command_len - recalc_pos);
}
free(tmp);
+#undef matchBuf
} else {
/* Ok -- the last char was a TAB. Since they
* just hit TAB again, print a list of all the
}
}
-#else
-#define input_tab(a) ((void)0)
#endif /* FEATURE_COMMAND_TAB_COMPLETION */
FILE *fp;
int hi;
- /* cleanup old */
- for (hi = state->cnt_history; hi > 0;) {
- hi--;
- free(state->history[hi]);
- }
+ /* NB: do not trash old history if file can't be opened */
fp = fopen(fromfile, "r");
if (fp) {
+ /* clean up old history */
+ for (hi = state->cnt_history; hi > 0;) {
+ hi--;
+ free(state->history[hi]);
+ }
+
for (hi = 0; hi < MAX_HISTORY;) {
- char * hl = xmalloc_getline(fp);
+ char *hl = xmalloc_fgetline(fp);
int l;
if (!hl)
break;
l = strlen(hl);
- if (l >= BUFSIZ)
- hl[BUFSIZ-1] = 0;
+ if (l >= MAX_LINELEN)
+ hl[MAX_LINELEN-1] = '\0';
if (l == 0 || hl[0] == ' ') {
free(hl);
continue;
state->history[hi++] = hl;
}
fclose(fp);
+ state->cur_history = state->cnt_history = hi;
}
- state->cur_history = state->cnt_history = hi;
}
/* state->flags is already checked to be nonzero */
state->history[i++] = xstrdup(str);
state->cur_history = i;
state->cnt_history = i;
- if (state->flags & SAVE_HISTORY)
+#if ENABLE_FEATURE_EDITING_SAVEHISTORY
+ if ((state->flags & SAVE_HISTORY) && state->hist_file)
save_history(state->hist_file);
+#endif
USE_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines++;)
}
*/
#if !ENABLE_FEATURE_EDITING_FANCY_PROMPT
-static void parse_prompt(const char *prmt_ptr)
+static void parse_and_put_prompt(const char *prmt_ptr)
{
cmdedit_prompt = prmt_ptr;
cmdedit_prmt_len = strlen(prmt_ptr);
put_prompt();
}
#else
-static void parse_prompt(const char *prmt_ptr)
+static void parse_and_put_prompt(const char *prmt_ptr)
{
int prmt_len = 0;
size_t cur_prmt_len = 0;
char flg_not_length = '[';
char *prmt_mem_ptr = xzalloc(1);
- char *pwd_buf = xrealloc_getcwd_or_warn(NULL);
- char buf2[PATH_MAX + 1];
- char buf[2];
+ char *cwd_buf = xrealloc_getcwd_or_warn(NULL);
+ char cbuf[2];
char c;
char *pbuf;
cmdedit_prmt_len = 0;
- if (!pwd_buf) {
- pwd_buf = (char *)bb_msg_unknown;
+ if (!cwd_buf) {
+ cwd_buf = (char *)bb_msg_unknown;
}
+ cbuf[1] = '\0'; /* never changes */
+
while (*prmt_ptr) {
- pbuf = buf;
- pbuf[1] = 0;
+ char *free_me = NULL;
+
+ pbuf = cbuf;
c = *prmt_ptr++;
if (c == '\\') {
const char *cp = prmt_ptr;
c = bb_process_escape_sequence(&prmt_ptr);
if (prmt_ptr == cp) {
- if (*cp == 0)
+ if (*cp == '\0')
break;
c = *prmt_ptr++;
+
switch (c) {
#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
case 'u':
- pbuf = user_buf;
+ pbuf = user_buf ? user_buf : (char*)"";
break;
#endif
case 'h':
- pbuf = hostname_buf;
- if (!pbuf) {
- pbuf = xzalloc(256);
- if (gethostname(pbuf, 255) < 0) {
- strcpy(pbuf, "?");
- } else {
- char *s = strchr(pbuf, '.');
- if (s)
- *s = '\0';
- }
- hostname_buf = pbuf;
- }
+ pbuf = free_me = safe_gethostname();
+ *strchrnul(pbuf, '.') = '\0';
break;
case '$':
c = (geteuid() == 0 ? '#' : '$');
break;
#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
case 'w':
- pbuf = pwd_buf;
+ /* /home/user[/something] -> ~[/something] */
+ pbuf = cwd_buf;
l = strlen(home_pwd_buf);
- if (home_pwd_buf[0] != 0
- && strncmp(home_pwd_buf, pbuf, l) == 0
- && (pbuf[l]=='/' || pbuf[l]=='\0')
- && strlen(pwd_buf+l)<PATH_MAX
+ if (l != 0
+ && strncmp(home_pwd_buf, cwd_buf, l) == 0
+ && (cwd_buf[l]=='/' || cwd_buf[l]=='\0')
+ && strlen(cwd_buf + l) < PATH_MAX
) {
- pbuf = buf2;
- *pbuf = '~';
- strcpy(pbuf+1, pwd_buf+l);
+ pbuf = free_me = xasprintf("~%s", cwd_buf + l);
}
break;
#endif
case 'W':
- pbuf = pwd_buf;
- cp = strrchr(pbuf,'/');
+ pbuf = cwd_buf;
+ cp = strrchr(pbuf, '/');
if (cp != NULL && cp != pbuf)
pbuf += (cp-pbuf) + 1;
break;
case '!':
- pbuf = buf2;
- snprintf(buf2, sizeof(buf2), "%d", num_ok_lines);
+ pbuf = free_me = xasprintf("%d", num_ok_lines);
break;
case 'e': case 'E': /* \e \E = \033 */
c = '\033';
break;
- case 'x': case 'X':
+ case 'x': case 'X': {
+ char buf2[4];
for (l = 0; l < 3;) {
- int h;
+ unsigned h;
buf2[l++] = *prmt_ptr;
- buf2[l] = 0;
- h = strtol(buf2, &pbuf, 16);
+ buf2[l] = '\0';
+ h = strtoul(buf2, &pbuf, 16);
if (h > UCHAR_MAX || (pbuf - buf2) < l) {
- l--;
+ buf2[--l] = '\0';
break;
}
prmt_ptr++;
}
- buf2[l] = 0;
- c = (char)strtol(buf2, NULL, 16);
+ c = (char)strtoul(buf2, NULL, 16);
if (c == 0)
c = '?';
- pbuf = buf;
+ pbuf = cbuf;
break;
+ }
case '[': case ']':
if (c == flg_not_length) {
- flg_not_length = flg_not_length == '[' ? ']' : '[';
+ flg_not_length = (flg_not_length == '[' ? ']' : '[');
continue;
}
break;
- }
- }
- }
- if (pbuf == buf)
- *pbuf = c;
+ } /* switch */
+ } /* if */
+ } /* if */
+ cbuf[0] = c;
cur_prmt_len = strlen(pbuf);
prmt_len += cur_prmt_len;
if (flg_not_length != ']')
cmdedit_prmt_len += cur_prmt_len;
prmt_mem_ptr = strcat(xrealloc(prmt_mem_ptr, prmt_len+1), pbuf);
- }
- if (pwd_buf != (char *)bb_msg_unknown)
- free(pwd_buf);
+ free(free_me);
+ } /* while */
+
+ if (cwd_buf != (char *)bb_msg_unknown)
+ free(cwd_buf);
cmdedit_prompt = prmt_mem_ptr;
put_prompt();
}
#endif
-#define setTermSettings(fd, argp) tcsetattr(fd, TCSANOW, argp)
-#define getTermSettings(fd, argp) tcgetattr(fd, argp);
-
-static sighandler_t previous_SIGWINCH_handler;
-
static void cmdedit_setwidth(unsigned w, int redraw_flg)
{
cmdedit_termw = w;
static void win_changed(int nsig)
{
- int width;
+ unsigned width;
get_terminal_width_height(0, &width, NULL);
cmdedit_setwidth(width, nsig /* - just a yes/no flag */);
if (nsig == SIGWINCH)
#undef CTRL
#define CTRL(a) ((a) & ~0x40)
-int read_line_input(const char* prompt, char* command, int maxsize, line_input_t *st)
+/* Returns:
+ * -1 on read errors or EOF, or on bare Ctrl-D,
+ * 0 on ctrl-C (the line entered is still returned in 'command'),
+ * >0 length of input string, including terminating '\n'
+ */
+int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, line_input_t *st)
{
- int lastWasTab = FALSE;
- unsigned int ic;
+#if ENABLE_FEATURE_TAB_COMPLETION
+ smallint lastWasTab = FALSE;
+#endif
+ unsigned ic;
unsigned char c;
smallint break_out = 0;
#if ENABLE_FEATURE_EDITING_VI
smallint vi_cmdmode = 0;
smalluint prevc;
#endif
+ struct termios initial_settings;
+ struct termios new_settings;
+
+ INIT_S();
+
+ if (tcgetattr(STDIN_FILENO, &initial_settings) < 0
+ || !(initial_settings.c_lflag & ECHO)
+ ) {
+ /* Happens when e.g. stty -echo was run before */
+ int len;
+ parse_and_put_prompt(prompt);
+ fflush(stdout);
+ if (fgets(command, maxsize, stdin) == NULL)
+ len = -1; /* EOF or error */
+ else
+ len = strlen(command);
+ DEINIT_S();
+ return len;
+ }
// FIXME: audit & improve this
- if (maxsize > BUFSIZ)
- maxsize = BUFSIZ;
+ if (maxsize > MAX_LINELEN)
+ maxsize = MAX_LINELEN;
/* With null flags, no other fields are ever used */
state = st ? st : (line_input_t*) &const_int_0;
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
- if (state->flags & SAVE_HISTORY)
+ if ((state->flags & SAVE_HISTORY) && state->hist_file)
load_history(state->hist_file);
#endif
command_ps = command;
command[0] = '\0';
- getTermSettings(0, (void *) &initial_settings);
- memcpy(&new_settings, &initial_settings, sizeof(new_settings));
+ new_settings = initial_settings;
new_settings.c_lflag &= ~ICANON; /* unbuffered input */
/* Turn off echoing and CTRL-C, so we can trap it */
new_settings.c_lflag &= ~(ECHO | ECHONL | ISIG);
#define _POSIX_VDISABLE '\0'
#endif
new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
- setTermSettings(0, (void *) &new_settings);
+ tcsetattr(STDIN_FILENO, TCSANOW, &new_settings);
/* Now initialize things */
previous_SIGWINCH_handler = signal(SIGWINCH, win_changed);
home_pwd_buf = xstrdup(entry->pw_dir);
}
}
-#endif
-#if ENABLE_FEATURE_TAB_COMPLETION
- my_uid = getuid();
- my_gid = getgid();
#endif
/* Print out the command prompt */
- parse_prompt(prompt);
+ parse_and_put_prompt(prompt);
while (1) {
- fflush(stdout);
+ fflush(NULL);
- if (safe_read(0, &c, 1) < 1) {
+ if (nonblock_safe_read(STDIN_FILENO, &c, 1) < 1) {
/* if we can't read input then exit */
goto prepare_to_die;
}
goto_new_line();
break_out = 1;
break;
-#if ENABLE_FEATURE_EDITING_FANCY_KEYS
case CTRL('A'):
vi_case('0'|vbit:)
/* Control-a -- Beginning of line */
/* Control-b -- Move back one character */
input_backward(1);
break;
-#endif
case CTRL('C'):
vi_case(CTRL('C')|vbit:)
/* Control-c -- stop gathering input */
input_delete(0);
break;
-#if ENABLE_FEATURE_EDITING_FANCY_KEYS
case CTRL('E'):
vi_case('$'|vbit:)
/* Control-e -- End of line */
/* Control-f -- Move forward one character */
input_forward();
break;
-#endif
case '\b':
case '\x7f': /* DEL */
input_backspace();
break;
+#if ENABLE_FEATURE_TAB_COMPLETION
case '\t':
input_tab(&lastWasTab);
break;
+#endif
-#if ENABLE_FEATURE_EDITING_FANCY_KEYS
case CTRL('K'):
/* Control-k -- clear to end of line */
command[cursor] = 0;
printf("\033[H");
redraw(0, command_len - cursor);
break;
-#endif
#if MAX_HISTORY > 0
case CTRL('N'):
break;
#endif
-#if ENABLE_FEATURE_EDITING_FANCY_KEYS
case CTRL('U'):
vi_case(CTRL('U')|vbit:)
/* Control-U -- Clear line before cursor */
redraw(cmdedit_y, command_len);
}
break;
-#endif
case CTRL('W'):
vi_case(CTRL('W')|vbit:)
/* Control-W -- Remove the last word */
int nc, sc;
sc = cursor;
prevc = ic;
- if (safe_read(0, &c, 1) < 1)
+ if (safe_read(STDIN_FILENO, &c, 1) < 1)
goto prepare_to_die;
if (c == (prevc & 0xff)) {
/* "cc", "dd" */
put();
break;
case 'r'|vbit:
- if (safe_read(0, &c, 1) < 1)
+ if (safe_read(STDIN_FILENO, &c, 1) < 1)
goto prepare_to_die;
if (c == 0)
beep();
else {
*(command + cursor) = c;
- putchar(c);
- putchar('\b');
+ bb_putchar(c);
+ bb_putchar('\b');
}
break;
#endif /* FEATURE_COMMAND_EDITING_VI */
}
#endif
/* escape sequence follows */
- if (safe_read(0, &c, 1) < 1)
+ if (safe_read(STDIN_FILENO, &c, 1) < 1)
goto prepare_to_die;
/* different vt100 emulations */
if (c == '[' || c == 'O') {
vi_case('['|vbit:)
vi_case('O'|vbit:)
- if (safe_read(0, &c, 1) < 1)
+ if (safe_read(STDIN_FILENO, &c, 1) < 1)
goto prepare_to_die;
}
if (c >= '1' && c <= '9') {
unsigned char dummy;
- if (safe_read(0, &dummy, 1) < 1)
+ if (safe_read(STDIN_FILENO, &dummy, 1) < 1)
goto prepare_to_die;
if (dummy != '~')
c = '\0';
/* Delete */
input_delete(0);
break;
- case '1':
- case 'H':
- /* <Home> */
+ case '1': // vt100? linux vt? or what?
+ case '7': // vt100? linux vt? or what?
+ case 'H': /* xterm's <Home> */
input_backward(cursor);
break;
- case '4':
- case 'F':
- /* <End> */
+ case '4': // vt100? linux vt? or what?
+ case '8': // vt100? linux vt? or what?
+ case 'F': /* xterm's <End> */
input_end();
break;
default:
break;
default: /* If it's regular input, do the normal thing */
-#if ENABLE_FEATURE_NONPRINTABLE_INVERSE_PUT
- /* Control-V -- Add non-printable symbol */
+
+ /* Control-V -- force insert of next char */
if (c == CTRL('V')) {
- if (safe_read(0, &c, 1) < 1)
+ if (safe_read(STDIN_FILENO, &c, 1) < 1)
goto prepare_to_die;
if (c == 0) {
beep();
break;
}
- } else
-#endif
+ }
#if ENABLE_FEATURE_EDITING_VI
if (vi_cmdmode) /* Don't self-insert */
break;
#endif
- if (!Isprint(c)) /* Skip non-printable characters */
- break;
-
- if (command_len >= (maxsize - 2)) /* Need to leave space for enter */
+ if ((int)command_len >= (maxsize - 2)) /* Need to leave space for enter */
break;
command_len++;
if (break_out) /* Enter is the command terminator, no more input. */
break;
+#if ENABLE_FEATURE_TAB_COMPLETION
if (c != '\t')
lastWasTab = FALSE;
+#endif
}
if (command_len > 0)
command[command_len] = '\0';
}
-#if ENABLE_FEATURE_CLEAN_UP && ENABLE_FEATURE_TAB_COMPLETION
+#if ENABLE_FEATURE_TAB_COMPLETION
free_tab_completion_data();
#endif
-#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
- free((char*)cmdedit_prompt);
-#endif
/* restore initial_settings */
- setTermSettings(STDIN_FILENO, (void *) &initial_settings);
+ tcsetattr(STDIN_FILENO, TCSANOW, &initial_settings);
/* restore SIGWINCH handler */
signal(SIGWINCH, previous_SIGWINCH_handler);
fflush(stdout);
+
+ DEINIT_S();
+
return command_len;
}
-line_input_t *new_line_input_t(int flags)
+line_input_t* FAST_FUNC new_line_input_t(int flags)
{
line_input_t *n = xzalloc(sizeof(*n));
n->flags = flags;
#else
#undef read_line_input
-int read_line_input(const char* prompt, char* command, int maxsize)
+int FAST_FUNC read_line_input(const char* prompt, char* command, int maxsize)
{
fputs(prompt, stdout);
fflush(stdout);
int main(int argc, char **argv)
{
- char buff[BUFSIZ];
+ char buff[MAX_LINELEN];
char *prompt =
#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
"\\[\\033[32;1m\\]\\u@\\[\\x1b[33;1m\\]\\h:"
projects / oweals / busybox.git / blobdiff