lineedit: implement \T \t \A \@ prompts escapes, fix \W escape, drop \!
function old new delta parse_and_put_prompt 742 793 +51 read_line_input 3836 3826 -10 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
8f2cb7ab26
commit
1d14569a66
@ -133,9 +133,6 @@ struct lineedit_statics {
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CHAR_T *command_ps;
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const char *cmdedit_prompt;
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#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
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int num_ok_lines; /* = 1; */
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#endif
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#if ENABLE_USERNAME_OR_HOMEDIR
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char *user_buf;
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@ -172,7 +169,6 @@ extern struct lineedit_statics *const lineedit_ptr_to_statics;
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#define command_len (S.command_len )
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#define command_ps (S.command_ps )
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#define cmdedit_prompt (S.cmdedit_prompt )
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#define num_ok_lines (S.num_ok_lines )
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#define user_buf (S.user_buf )
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#define home_pwd_buf (S.home_pwd_buf )
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#define matches (S.matches )
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@ -185,7 +181,6 @@ extern struct lineedit_statics *const lineedit_ptr_to_statics;
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(*(struct lineedit_statics**)&lineedit_ptr_to_statics) = xzalloc(sizeof(S)); \
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barrier(); \
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cmdedit_termw = 80; \
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IF_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines = 1;) \
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IF_USERNAME_OR_HOMEDIR(home_pwd_buf = (char*)null_str;) \
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IF_FEATURE_EDITING_VI(delptr = delbuf;) \
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} while (0)
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@ -1532,7 +1527,6 @@ static void remember_in_history(char *str)
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# if ENABLE_FEATURE_EDITING_SAVEHISTORY && !ENABLE_FEATURE_EDITING_SAVE_ON_EXIT
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save_history(str);
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# endif
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IF_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines++;)
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}
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#else /* MAX_HISTORY == 0 */
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@ -1768,17 +1762,16 @@ static void parse_and_put_prompt(const char *prmt_ptr)
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size_t cur_prmt_len = 0;
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char flg_not_length = '[';
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char *prmt_mem_ptr = xzalloc(1);
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char *cwd_buf = xrealloc_getcwd_or_warn(NULL);
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# if ENABLE_USERNAME_OR_HOMEDIR
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char *cwd_buf = NULL;
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# endif
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char timebuf[sizeof("HH:MM:SS")];
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char cbuf[2];
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char c;
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char *pbuf;
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cmdedit_prmt_len = 0;
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if (!cwd_buf) {
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cwd_buf = (char *)bb_msg_unknown;
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}
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cbuf[1] = '\0'; /* never changes */
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while (*prmt_ptr) {
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@ -1787,7 +1780,7 @@ static void parse_and_put_prompt(const char *prmt_ptr)
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pbuf = cbuf;
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c = *prmt_ptr++;
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if (c == '\\') {
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const char *cp = prmt_ptr;
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const char *cp;
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int l;
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/*
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* Supported via bb_process_escape_sequence:
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@ -1799,35 +1792,38 @@ static void parse_and_put_prompt(const char *prmt_ptr)
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* \nnn char with octal code nnn
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* Supported:
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* \$ if the effective UID is 0, a #, otherwise a $
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* \! history number of this command
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* (buggy?)
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* \w current working directory, with $HOME abbreviated with a tilde
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* Note: we do not support $PROMPT_DIRTRIM=n feature
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* \W basename of the current working directory, with $HOME abbreviated with a tilde
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* \h hostname up to the first '.'
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* \H hostname
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* \u username
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* \[ begin a sequence of non-printing characters
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* \] end a sequence of non-printing characters
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* \T current time in 12-hour HH:MM:SS format
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* \@ current time in 12-hour am/pm format
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* \A current time in 24-hour HH:MM format
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* \t current time in 24-hour HH:MM:SS format
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* (all of the above work as \A)
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* Not supported:
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* \! history number of this command
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* \# command number of this command
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* \j number of jobs currently managed by the shell
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* \l basename of the shell's terminal device name
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* \s name of the shell, the basename of $0 (the portion following the final slash)
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* \V release of bash, version + patch level (e.g., 2.00.0)
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* \W basename of the current working directory, with $HOME abbreviated with a tilde
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* \d date in "Weekday Month Date" format (e.g., "Tue May 26")
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* \D{format}
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* format is passed to strftime(3).
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* An empty format results in a locale-specific time representation.
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* The braces are required.
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* \T current time in 12-hour HH:MM:SS format
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* \@ current time in 12-hour am/pm format
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* \A current time in 24-hour HH:MM format
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* Mishandled by bb_process_escape_sequence:
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* \t current time in 24-hour HH:MM:SS format
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* \v version of bash (e.g., 2.00)
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*/
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c = bb_process_escape_sequence(&prmt_ptr);
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cp = prmt_ptr;
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c = *cp;
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if (c != 't') /* don't treat \t as tab */
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c = bb_process_escape_sequence(&prmt_ptr);
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if (prmt_ptr == cp) {
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if (*cp == '\0')
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break;
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@ -1848,29 +1844,41 @@ static void parse_and_put_prompt(const char *prmt_ptr)
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case '$':
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c = (geteuid() == 0 ? '#' : '$');
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break;
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# if ENABLE_USERNAME_OR_HOMEDIR
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case 'w':
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/* /home/user[/something] -> ~[/something] */
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pbuf = cwd_buf;
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l = strlen(home_pwd_buf);
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if (l != 0
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&& strncmp(home_pwd_buf, cwd_buf, l) == 0
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&& (cwd_buf[l]=='/' || cwd_buf[l]=='\0')
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&& strlen(cwd_buf + l) < PATH_MAX
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) {
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pbuf = free_me = xasprintf("~%s", cwd_buf + l);
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}
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case 'T': /* 12-hour HH:MM:SS format */
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case '@': /* 12-hour am/pm format */
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case 'A': /* 24-hour HH:MM format */
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case 't': /* 24-hour HH:MM:SS format */
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/* We show all of them as 24-hour HH:MM */
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strftime_HHMMSS(timebuf, sizeof(timebuf), NULL)[-3] = '\0';
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pbuf = timebuf;
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break;
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# endif
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case 'W':
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# if ENABLE_USERNAME_OR_HOMEDIR
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case 'w': /* current dir */
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case 'W': /* basename of cur dir */
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if (!cwd_buf) {
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cwd_buf = xrealloc_getcwd_or_warn(NULL);
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if (!cwd_buf)
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cwd_buf = (char *)bb_msg_unknown;
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else {
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/* /home/user[/something] -> ~[/something] */
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l = strlen(home_pwd_buf);
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if (l != 0
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&& strncmp(home_pwd_buf, cwd_buf, l) == 0
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&& (cwd_buf[l] == '/' || cwd_buf[l] == '\0')
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) {
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cwd_buf[0] = '~';
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overlapping_strcpy(cwd_buf + 1, cwd_buf + l);
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}
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}
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}
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pbuf = cwd_buf;
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if (c == 'w')
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break;
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cp = strrchr(pbuf, '/');
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if (cp != NULL && cp != pbuf)
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pbuf += (cp-pbuf) + 1;
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break;
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case '!':
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pbuf = free_me = xasprintf("%d", num_ok_lines);
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pbuf = (char*)cp + 1;
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break;
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# endif
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// bb_process_escape_sequence does this now:
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// case 'e': case 'E': /* \e \E = \033 */
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// c = '\033';
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@ -1912,8 +1920,10 @@ static void parse_and_put_prompt(const char *prmt_ptr)
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free(free_me);
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} /* while */
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# if ENABLE_USERNAME_OR_HOMEDIR
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if (cwd_buf != (char *)bb_msg_unknown)
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free(cwd_buf);
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# endif
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cmdedit_prompt = prmt_mem_ptr;
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put_prompt();
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}
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