mirror of
https://github.com/sheumann/hush.git
synced 2024-10-31 19:04:47 +00:00
preparatory cleanup patch for tab completion fixes
renames and deinlines a few functions function old new delta input_tab - 1041 +1041 complete_cmd_dir_file - 699 +699 complete_username - 121 +121 username_completion 121 - -121 read_line_input 5002 3313 -1689 ------------------------------------------------------------------------------ (add/remove: 3/1 grow/shrink: 0/1 up/down: 1861/-1810) Total: 51 bytes Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
This commit is contained in:
parent
7063e86d0d
commit
57ea9b488b
134
libbb/lineedit.c
134
libbb/lineedit.c
@ -1,6 +1,6 @@
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/* vi: set sw=4 ts=4: */
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/*
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* Termios command line History and Editing.
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* Command line editing.
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*
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* Copyright (c) 1986-2003 may safely be consumed by a BSD or GPL license.
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* Written by: Vladimir Oleynik <dzo@simtreas.ru>
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@ -194,7 +194,7 @@ static void deinit_S(void)
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{
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#if ENABLE_FEATURE_EDITING_FANCY_PROMPT
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/* This one is allocated only if FANCY_PROMPT is on
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* (otherwise it points to verbatim prompt (NOT malloced) */
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* (otherwise it points to verbatim prompt (NOT malloced)) */
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free((char*)cmdedit_prompt);
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#endif
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#if ENABLE_USERNAME_OR_HOMEDIR
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@ -213,7 +213,7 @@ static size_t load_string(const char *src, int maxsize)
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ssize_t len = mbstowcs(command_ps, src, maxsize - 1);
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if (len < 0)
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len = 0;
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command_ps[len] = 0;
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command_ps[len] = BB_NUL;
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return len;
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}
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static unsigned save_string(char *dst, unsigned maxsize)
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@ -234,17 +234,17 @@ static unsigned save_string(char *dst, unsigned maxsize)
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int n = srcpos;
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/* Convert up to 1st invalid byte (or up to end) */
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while ((wc = command_ps[srcpos]) != 0
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while ((wc = command_ps[srcpos]) != BB_NUL
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&& !unicode_is_raw_byte(wc)
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) {
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srcpos++;
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}
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command_ps[srcpos] = 0;
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command_ps[srcpos] = BB_NUL;
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n = wcstombs(dst + dstpos, command_ps + n, maxsize - dstpos);
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if (n < 0) /* should not happen */
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break;
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dstpos += n;
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if (wc == 0) /* usually is */
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if (wc == BB_NUL) /* usually is */
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break;
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/* We do have invalid byte here! */
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@ -639,7 +639,7 @@ static char *username_path_completion(char *ud)
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}
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/* ~use<tab> - find all users with this prefix */
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static NOINLINE void username_completion(const char *ud)
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static NOINLINE void complete_username(const char *ud)
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{
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/* Using _r function to avoid pulling in static buffers */
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char line_buff[256];
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@ -659,7 +659,7 @@ static NOINLINE void username_completion(const char *ud)
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}
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endpwent();
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}
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#endif /* FEATURE_COMMAND_USERNAME_COMPLETION */
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#endif /* FEATURE_USERNAME_COMPLETION */
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enum {
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FIND_EXE_ONLY = 0,
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@ -710,7 +710,7 @@ static int path_parse(char ***p)
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return npth;
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}
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static void exe_n_cwd_tab_completion(char *command, int type)
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static NOINLINE void complete_cmd_dir_file(char *command, int type)
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{
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char *path1[1];
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char **paths = path1;
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@ -799,24 +799,25 @@ static void exe_n_cwd_tab_completion(char *command, int type)
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free(dirbuf);
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}
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/* QUOT is used on elements of int_buf[], which are bytes,
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* not Unicode chars. Therefore it works correctly even in Unicode mode.
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*/
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#define QUOT (UCHAR_MAX+1)
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#define int_buf (S.find_match__int_buf)
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#define pos_buf (S.find_match__pos_buf)
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/* is must be <= in */
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static void collapse_pos(int is, int in)
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{
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memmove(int_buf+is, int_buf+in, (MAX_LINELEN+1-in) * sizeof(int_buf[0]));
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memmove(pos_buf+is, pos_buf+in, (MAX_LINELEN+1-in) * sizeof(pos_buf[0]));
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}
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/* On entry, matchBuf contains everything up to cursor at the moment <tab>
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/* build_match_prefix:
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* On entry, matchBuf contains everything up to cursor at the moment <tab>
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* was pressed. This function looks at it, figures out what part of it
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* constitutes the command/file/directory prefix to use for completion,
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* and rewrites matchBuf to contain only that part.
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*/
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/* Helpers: */
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/* QUOT is used on elements of int_buf[], which are bytes,
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* not Unicode chars. Therefore it works correctly even in Unicode mode.
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*/
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#define QUOT (UCHAR_MAX+1)
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#define int_buf (S.find_match__int_buf)
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#define pos_buf (S.find_match__pos_buf)
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static void collapse_pos(int beg, int end)
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{
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/* beg must be <= end */
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memmove(int_buf+beg, int_buf+end, (MAX_LINELEN+1-end) * sizeof(int_buf[0]));
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memmove(pos_buf+beg, pos_buf+end, (MAX_LINELEN+1-end) * sizeof(pos_buf[0]));
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}
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static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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{
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int i, j;
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@ -826,17 +827,16 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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/* int16_t int_buf[MAX_LINELEN + 1]; */
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/* int16_t pos_buf[MAX_LINELEN + 1]; */
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/* set to integer dimension characters and own positions */
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for (i = 0;; i++) {
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int_buf[i] = (unsigned char)matchBuf[i];
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if (int_buf[i] == 0) {
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pos_buf[i] = -1; /* end-fo-line indicator */
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pos_buf[i] = -1; /* end-of-line indicator */
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break;
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}
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pos_buf[i] = i;
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}
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/* mask \+symbol and convert '\t' to ' ' */
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/* Mark every \c as "quoted c" */
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for (i = j = 0; matchBuf[i]; i++, j++) {
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if (matchBuf[i] == '\\') {
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collapse_pos(j, j + 1);
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@ -844,7 +844,7 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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i++;
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}
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}
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/* mask "symbols" or 'symbols' */
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/* Quote-mark "chars" and 'chars' */
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c2 = 0;
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for (i = 0; int_buf[i]; i++) {
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c = int_buf[i];
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@ -861,8 +861,10 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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int_buf[i] |= QUOT;
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}
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/* skip commands with arguments if line has commands delimiters */
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/* ';' ';;' '&' '|' '&&' '||' but '>&' '<&' '>|' */
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/* Remove everything up to command delimiters:
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* ';' ';;' '&' '|' '&&' '||',
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* but careful with '>&' '<&' '>|'
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*/
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for (i = 0; int_buf[i]; i++) {
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int n;
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c = int_buf[i];
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@ -879,28 +881,29 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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}
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if (n) {
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collapse_pos(0, i + n);
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i = -1; /* hack incremet */
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i = -1; /* hack increment */
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}
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}
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/* collapse `command...` */
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/* Remove all `cmd` */
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for (i = 0; int_buf[i]; i++) {
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if (int_buf[i] == '`') {
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for (j = i + 1; int_buf[j]; j++)
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for (j = i + 1; int_buf[j]; j++) {
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if (int_buf[j] == '`') {
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collapse_pos(i, j + 1);
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j = 0;
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break;
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}
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}
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if (j) {
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/* not found closing ` - command mode, collapse all previous */
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/* No closing ` - command mode, remove all up to ` */
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collapse_pos(0, i + 1);
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break;
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} else
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i--; /* hack incremet */
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}
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i--; /* hack increment */
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}
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}
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/* collapse (command...(command...)...) or {command...{command...}...} */
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/* Remove (command...(command...)...) and {command...{command...}...} */
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c = 0; /* "recursive" level */
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c2 = 0;
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for (i = 0; int_buf[i]; i++) {
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@ -910,7 +913,7 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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else
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c2++;
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collapse_pos(0, i + 1);
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i = -1; /* hack incremet */
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i = -1; /* hack increment */
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}
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}
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for (i = 0; pos_buf[i] >= 0 && (c > 0 || c2 > 0); i++) {
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@ -920,22 +923,23 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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else
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c2--;
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collapse_pos(0, i + 1);
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i = -1; /* hack incremet */
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i = -1; /* hack increment */
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}
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}
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/* skip first not quote space */
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/* Remove leading unquoted spaces */
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for (i = 0; int_buf[i]; i++)
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if (int_buf[i] != ' ')
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break;
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if (i)
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collapse_pos(0, i);
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/* set find mode for completion */
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/* Determine completion mode */
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command_mode = FIND_EXE_ONLY;
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for (i = 0; int_buf[i]; i++) {
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if (int_buf[i] == ' ' || int_buf[i] == '<' || int_buf[i] == '>') {
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if (int_buf[i] == ' ' && command_mode == FIND_EXE_ONLY
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if (int_buf[i] == ' '
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&& command_mode == FIND_EXE_ONLY
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&& matchBuf[pos_buf[0]] == 'c'
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&& matchBuf[pos_buf[1]] == 'd'
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) {
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@ -946,9 +950,10 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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}
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}
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}
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/* Remove everything except last word */
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for (i = 0; int_buf[i]; i++) /* quasi-strlen(int_buf) */
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continue;
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/* find last word */
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for (--i; i >= 0; i--) {
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c = int_buf[i];
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if (c == ' ' || c == '<' || c == '>' || c == '|' || c == '&') {
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@ -956,7 +961,7 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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break;
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}
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}
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/* skip first not quoted '\'' or '"' */
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/* Skip all leading unquoted ' or " */
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for (i = 0; int_buf[i] == '\'' || int_buf[i] == '"'; i++)
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continue;
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/* collapse quote or unquote // or /~ */
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@ -982,8 +987,8 @@ static NOINLINE int build_match_prefix(char *matchBuf, int *len_with_quotes)
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#undef pos_buf
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/*
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* display by column (original idea from ls applet,
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* very optimized by me :)
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* Display by column (original idea from ls applet,
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* very optimized by me [Vladimir] :)
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*/
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static void showfiles(void)
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{
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@ -1040,7 +1045,7 @@ static char *add_quote_for_spec_chars(char *found)
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}
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/* Do TAB completion */
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static void input_tab(smallint *lastWasTab)
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static NOINLINE void input_tab(smallint *lastWasTab)
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{
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if (!(state->flags & TAB_COMPLETION))
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return;
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@ -1057,7 +1062,7 @@ static void input_tab(smallint *lastWasTab)
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int cursor_mb;
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#endif
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*lastWasTab = TRUE; /* flop trigger */
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*lastWasTab = 1;
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/* Make a local copy of the string --
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* up to the position of the cursor */
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@ -1066,7 +1071,7 @@ static void input_tab(smallint *lastWasTab)
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#else
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{
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CHAR_T wc = command_ps[cursor];
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command_ps[cursor] = 0;
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command_ps[cursor] = BB_NUL;
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save_string(matchBuf, MAX_LINELEN);
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command_ps[cursor] = wc;
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cursor_mb = strlen(matchBuf);
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@ -1084,26 +1089,25 @@ static void input_tab(smallint *lastWasTab)
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* then try completing this word as a username. */
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if (state->flags & USERNAME_COMPLETION)
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if (matchBuf[0] == '~' && strchr(matchBuf, '/') == NULL)
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username_completion(matchBuf);
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complete_username(matchBuf);
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#endif
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/* Try to match any executable in our path and everything
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* in the current working directory */
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/* Try to match a command in $PATH, or a directory, or a file */
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if (!matches)
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exe_n_cwd_tab_completion(matchBuf, find_type);
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/* Sort, then remove any duplicates found */
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complete_cmd_dir_file(matchBuf, find_type);
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/* Remove duplicates */
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if (matches) {
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unsigned i;
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unsigned n = 0;
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qsort_string_vector(matches, num_matches);
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for (i = 0; i < num_matches - 1; ++i) {
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if (matches[i] && matches[i+1]) { /* paranoia */
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//if (matches[i] && matches[i+1]) { /* paranoia */
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if (strcmp(matches[i], matches[i+1]) == 0) {
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free(matches[i]);
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matches[i] = NULL; /* paranoia */
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//matches[i] = NULL; /* paranoia */
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} else {
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matches[n++] = matches[i];
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}
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}
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//}
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}
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matches[n++] = matches[i];
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num_matches = n;
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@ -1113,7 +1117,7 @@ static void input_tab(smallint *lastWasTab)
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beep();
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if (!matches)
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return; /* no matches at all */
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/* find minimal match */
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/* Find common prefix */
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tmp1 = xstrdup(matches[0]);
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for (tmp = tmp1; *tmp; tmp++) {
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for (len_found = 1; len_found < num_matches; len_found++) {
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@ -1123,7 +1127,7 @@ static void input_tab(smallint *lastWasTab)
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}
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}
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}
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if (*tmp1 == '\0') { /* have unique pfx? */
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if (*tmp1 == '\0') { /* have unique prefix? */
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free(tmp1); /* no */
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return;
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}
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@ -1131,10 +1135,10 @@ static void input_tab(smallint *lastWasTab)
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free(tmp1);
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len_found = strlen(tmp);
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} else { /* exactly one match */
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tmp = add_quote_for_spec_chars(matches[0]);
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/* for next completion current found */
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*lastWasTab = FALSE;
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/* Next <tab> is not a double-tab */
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*lastWasTab = 0;
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tmp = add_quote_for_spec_chars(matches[0]);
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len_found = strlen(tmp);
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if (tmp[len_found-1] != '/') {
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tmp[len_found] = ' ';
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@ -1199,7 +1203,7 @@ static void input_tab(smallint *lastWasTab)
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}
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}
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#endif /* FEATURE_COMMAND_TAB_COMPLETION */
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#endif /* FEATURE_TAB_COMPLETION */
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line_input_t* FAST_FUNC new_line_input_t(int flags)
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@ -1899,7 +1903,7 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
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{
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int len;
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#if ENABLE_FEATURE_TAB_COMPLETION
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smallint lastWasTab = FALSE;
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smallint lastWasTab = 0;
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#endif
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smallint break_out = 0;
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#if ENABLE_FEATURE_EDITING_VI
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@ -2375,7 +2379,7 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
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#if ENABLE_FEATURE_TAB_COMPLETION
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if (ic_raw != '\t')
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lastWasTab = FALSE;
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lastWasTab = 0;
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#endif
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} /* while (1) */
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@ -2469,7 +2473,7 @@ int main(int argc, char **argv)
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l = read_line_input(prompt, buff);
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if (l <= 0 || buff[l-1] != '\n')
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break;
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buff[l-1] = 0;
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buff[l-1] = '\0';
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printf("*** read_line_input() returned line =%s=\n", buff);
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}
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printf("*** read_line_input() detect ^D\n");
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