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| author | Tomas Heinrich <heinrich.tomas@gmail.com> | 2010-03-18 18:35:37 +0100 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2010-03-18 18:35:37 +0100 |
| commit | c5c006c10c060e7f1a97250d039051b93ed390b2 (patch) | |
| tree | b281136c99e6a27a530282a0b1b7eaf938704bb2 /libbb/lineedit.c | |
| parent | 98f1dc12f1554aca6c3743bec1c3d8982a077f7c (diff) | |
| download | busybox-c5c006c10c060e7f1a97250d039051b93ed390b2.tar.gz | |
lineedit: first shot at optional unicode bidi input support
function old new delta
read_line_input 4886 5003 +117
in_uint16_table - 97 +97
in_interval_table - 78 +78
static.rtl_b - 68 +68
unicode_isrtl - 55 +55
isrtl_str - 51 +51
static.rtl_p - 42 +42
unicode_conv_to_printable2 633 477 -156
------------------------------------------------------------------------------
(add/remove: 6/0 grow/shrink: 1/1 up/down: 508/-156) Total: 352 bytes
Signed-off-by: Tomas Heinrich <heinrich.tomas@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libbb/lineedit.c')
| -rw-r--r-- | libbb/lineedit.c | 44 |
1 files changed, 32 insertions, 12 deletions
diff --git a/libbb/lineedit.c b/libbb/lineedit.c index 7c0eef90d..be022e8ae 100644 --- a/libbb/lineedit.c +++ b/libbb/lineedit.c @@ -1738,6 +1738,18 @@ static int lineedit_read_key(char *read_key_buffer) return ic; } +#if ENABLE_UNICODE_BIDI_SUPPORT +static int isrtl_str(void) +{ + int idx = cursor; + while (command_ps[idx] >= ' ' && command_ps[idx] < 127 && !isalpha(command_ps[idx])) + idx++; + return unicode_isrtl(command_ps[idx]); +} +#else +# define isrtl_str() 0 +#endif + /* leave out the "vi-mode"-only case labels if vi editing isn't * configured. */ #define vi_case(caselabel) IF_FEATURE_EDITING_VI(case caselabel) @@ -1895,10 +1907,9 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li break; case CTRL('B'): vi_case('h'|VI_CMDMODE_BIT:) - vi_case('\b'|VI_CMDMODE_BIT:) + vi_case('\b'|VI_CMDMODE_BIT:) /* ^H */ vi_case('\x7f'|VI_CMDMODE_BIT:) /* DEL */ - /* Control-b -- Move back one character */ - input_backward(1); + input_backward(1); /* Move back one character */ break; case CTRL('E'): vi_case('$'|VI_CMDMODE_BIT:) @@ -1908,13 +1919,20 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li case CTRL('F'): vi_case('l'|VI_CMDMODE_BIT:) vi_case(' '|VI_CMDMODE_BIT:) - /* Control-f -- Move forward one character */ - input_forward(); + input_forward(); /* Move forward one character */ break; - case '\b': + case '\b': /* ^H */ case '\x7f': /* DEL */ - /* Control-h and DEL */ - input_backspace(); + if (!isrtl_str()) + input_backspace(); + else + input_delete(0); + break; + case KEYCODE_DELETE: + if (!isrtl_str()) + input_delete(0); + else + input_backspace(); break; #if ENABLE_FEATURE_TAB_COMPLETION case '\t': @@ -2137,9 +2155,6 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li case KEYCODE_CTRL_RIGHT: ctrl_right(); break; - case KEYCODE_DELETE: - input_delete(0); - break; case KEYCODE_HOME: input_backward(cursor); break; @@ -2205,14 +2220,19 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li command_ps[cursor] = ic; command_ps[cursor + 1] = BB_NUL; cmdedit_set_out_char(' '); + if (unicode_isrtl(ic)) + input_backward(1); } else { /* In the middle, insert */ + /* is char right-to-left, or "neutral" one (e.g. comma) added to rtl text? */ + int rtl = ENABLE_UNICODE_BIDI_SUPPORT ? (unicode_isrtl(ic) || (ic < 127 && !isalpha(ic) && isrtl_str())) : 0; int sc = cursor; memmove(command_ps + sc + 1, command_ps + sc, (command_len - sc) * sizeof(command_ps[0])); command_ps[sc] = ic; - sc++; + if (!rtl) + sc++; /* rewrite from cursor */ input_end(); /* to prev x pos + 1 */ |