Mercurial > vim
annotate src/ui.c @ 20626:38f728a93c07
Added tag v8.2.0866 for changeset 116c7bd5e9809107ea582a3348938c7fd4031f29
author | Bram Moolenaar <Bram@vim.org> |
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date | Sun, 31 May 2020 21:30:04 +0200 |
parents | 4411c2b96af9 |
children | 1725bb56178a |
rev | line source |
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commit https://github.com/vim/vim/commit/edf3f97ae2af024708ebb4ac614227327033ca47
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
7 | 2 * |
3 * VIM - Vi IMproved by Bram Moolenaar | |
4 * | |
5 * Do ":help uganda" in Vim to read copying and usage conditions. | |
6 * Do ":help credits" in Vim to see a list of people who contributed. | |
7 * See README.txt for an overview of the Vim source code. | |
8 */ | |
9 | |
10 /* | |
11 * ui.c: functions that handle the user interface. | |
12 * 1. Keyboard input stuff, and a bit of windowing stuff. These are called | |
13 * before the machine specific stuff (mch_*) so that we can call the GUI | |
14 * stuff instead if the GUI is running. | |
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15 * 2. Input buffer stuff. |
7 | 16 */ |
17 | |
18 #include "vim.h" | |
19 | |
20 void | |
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21 ui_write(char_u *s, int len) |
7 | 22 { |
23 #ifdef FEAT_GUI | |
24 if (gui.in_use && !gui.dying && !gui.starting) | |
25 { | |
26 gui_write(s, len); | |
27 if (p_wd) | |
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28 gui_wait_for_chars(p_wd, typebuf.tb_change_cnt); |
7 | 29 return; |
30 } | |
31 #endif | |
32 #ifndef NO_CONSOLE | |
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33 // Don't output anything in silent mode ("ex -s") unless 'verbose' set |
7 | 34 if (!(silent_mode && p_verbose == 0)) |
35 { | |
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36 #if !defined(MSWIN) |
7 | 37 char_u *tofree = NULL; |
38 | |
39 if (output_conv.vc_type != CONV_NONE) | |
40 { | |
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41 // Convert characters from 'encoding' to 'termencoding'. |
7 | 42 tofree = string_convert(&output_conv, s, &len); |
43 if (tofree != NULL) | |
44 s = tofree; | |
45 } | |
46 #endif | |
47 | |
48 mch_write(s, len); | |
49 | |
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50 # if !defined(MSWIN) |
7 | 51 if (output_conv.vc_type != CONV_NONE) |
52 vim_free(tofree); | |
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53 # endif |
7 | 54 } |
55 #endif | |
56 } | |
57 | |
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58 #if defined(UNIX) || defined(VMS) || defined(PROTO) || defined(MSWIN) |
7 | 59 /* |
60 * When executing an external program, there may be some typed characters that | |
61 * are not consumed by it. Give them back to ui_inchar() and they are stored | |
62 * here for the next call. | |
63 */ | |
64 static char_u *ta_str = NULL; | |
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65 static int ta_off; // offset for next char to use when ta_str != NULL |
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66 static int ta_len; // length of ta_str when it's not NULL |
7 | 67 |
68 void | |
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69 ui_inchar_undo(char_u *s, int len) |
7 | 70 { |
71 char_u *new; | |
72 int newlen; | |
73 | |
74 newlen = len; | |
75 if (ta_str != NULL) | |
76 newlen += ta_len - ta_off; | |
77 new = alloc(newlen); | |
78 if (new != NULL) | |
79 { | |
80 if (ta_str != NULL) | |
81 { | |
82 mch_memmove(new, ta_str + ta_off, (size_t)(ta_len - ta_off)); | |
83 mch_memmove(new + ta_len - ta_off, s, (size_t)len); | |
84 vim_free(ta_str); | |
85 } | |
86 else | |
87 mch_memmove(new, s, (size_t)len); | |
88 ta_str = new; | |
89 ta_len = newlen; | |
90 ta_off = 0; | |
91 } | |
92 } | |
93 #endif | |
94 | |
95 /* | |
3877 | 96 * ui_inchar(): low level input function. |
7 | 97 * Get characters from the keyboard. |
98 * Return the number of characters that are available. | |
99 * If "wtime" == 0 do not wait for characters. | |
100 * If "wtime" == -1 wait forever for characters. | |
101 * If "wtime" > 0 wait "wtime" milliseconds for a character. | |
102 * | |
103 * "tb_change_cnt" is the value of typebuf.tb_change_cnt if "buf" points into | |
104 * it. When typebuf.tb_change_cnt changes (e.g., when a message is received | |
105 * from a remote client) "buf" can no longer be used. "tb_change_cnt" is NULL | |
106 * otherwise. | |
107 */ | |
108 int | |
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109 ui_inchar( |
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110 char_u *buf, |
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111 int maxlen, |
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112 long wtime, // don't use "time", MIPS cannot handle it |
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113 int tb_change_cnt) |
7 | 114 { |
115 int retval = 0; | |
116 | |
117 #if defined(FEAT_GUI) && (defined(UNIX) || defined(VMS)) | |
118 /* | |
119 * Use the typeahead if there is any. | |
120 */ | |
121 if (ta_str != NULL) | |
122 { | |
123 if (maxlen >= ta_len - ta_off) | |
124 { | |
125 mch_memmove(buf, ta_str + ta_off, (size_t)ta_len); | |
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126 VIM_CLEAR(ta_str); |
7 | 127 return ta_len; |
128 } | |
129 mch_memmove(buf, ta_str + ta_off, (size_t)maxlen); | |
130 ta_off += maxlen; | |
131 return maxlen; | |
132 } | |
133 #endif | |
134 | |
170 | 135 #ifdef FEAT_PROFILE |
791 | 136 if (do_profiling == PROF_YES && wtime != 0) |
170 | 137 prof_inchar_enter(); |
138 #endif | |
139 | |
7 | 140 #ifdef NO_CONSOLE_INPUT |
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141 // Don't wait for character input when the window hasn't been opened yet. |
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142 // Do try reading, this works when redirecting stdin from a file. |
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143 // Must return something, otherwise we'll loop forever. If we run into |
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144 // this very often we probably got stuck, exit Vim. |
7 | 145 if (no_console_input()) |
146 { | |
147 static int count = 0; | |
148 | |
149 # ifndef NO_CONSOLE | |
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150 retval = mch_inchar(buf, maxlen, wtime, tb_change_cnt); |
228 | 151 if (retval > 0 || typebuf_changed(tb_change_cnt) || wtime >= 0) |
170 | 152 goto theend; |
7 | 153 # endif |
154 if (wtime == -1 && ++count == 1000) | |
155 read_error_exit(); | |
156 buf[0] = CAR; | |
170 | 157 retval = 1; |
158 goto theend; | |
7 | 159 } |
160 #endif | |
161 | |
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162 // If we are going to wait for some time or block... |
1086 | 163 if (wtime == -1 || wtime > 100L) |
164 { | |
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165 // ... allow signals to kill us. |
1086 | 166 (void)vim_handle_signal(SIGNAL_UNBLOCK); |
167 | |
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168 // ... there is no need for CTRL-C to interrupt something, don't let |
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169 // it set got_int when it was mapped. |
6491 | 170 if ((mapped_ctrl_c | curbuf->b_mapped_ctrl_c) & get_real_state()) |
1086 | 171 ctrl_c_interrupts = FALSE; |
172 } | |
7 | 173 |
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174 /* |
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175 * Here we call gui_inchar() or mch_inchar(), the GUI or machine-dependent |
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176 * input function. The functionality they implement is like this: |
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177 * |
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178 * while (not timed out) |
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179 * { |
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180 * handle-resize; |
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181 * parse-queued-messages; |
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182 * if (waited for 'updatetime') |
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183 * trigger-cursorhold; |
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184 * ui_wait_for_chars_or_timer() |
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185 * if (character available) |
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186 * break; |
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187 * } |
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188 * |
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189 * ui_wait_for_chars_or_timer() does: |
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190 * |
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191 * while (not timed out) |
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192 * { |
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193 * if (any-timer-triggered) |
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194 * invoke-timer-callback; |
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195 * wait-for-character(); |
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196 * if (character available) |
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197 * break; |
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198 * } |
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199 * |
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200 * wait-for-character() does: |
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201 * while (not timed out) |
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202 * { |
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203 * Wait for event; |
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204 * if (something on channel) |
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205 * read/write channel; |
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206 * else if (resized) |
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207 * handle_resize(); |
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208 * else if (system event) |
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209 * deal-with-system-event; |
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210 * else if (character available) |
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211 * break; |
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212 * } |
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213 * |
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214 */ |
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215 |
7 | 216 #ifdef FEAT_GUI |
217 if (gui.in_use) | |
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218 retval = gui_inchar(buf, maxlen, wtime, tb_change_cnt); |
7 | 219 #endif |
220 #ifndef NO_CONSOLE | |
221 # ifdef FEAT_GUI | |
222 else | |
223 # endif | |
224 retval = mch_inchar(buf, maxlen, wtime, tb_change_cnt); | |
225 #endif | |
226 | |
1086 | 227 if (wtime == -1 || wtime > 100L) |
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228 // block SIGHUP et al. |
1086 | 229 (void)vim_handle_signal(SIGNAL_BLOCK); |
230 | |
7 | 231 ctrl_c_interrupts = TRUE; |
232 | |
170 | 233 #ifdef NO_CONSOLE_INPUT |
234 theend: | |
235 #endif | |
236 #ifdef FEAT_PROFILE | |
791 | 237 if (do_profiling == PROF_YES && wtime != 0) |
170 | 238 prof_inchar_exit(); |
239 #endif | |
7 | 240 return retval; |
241 } | |
242 | |
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243 #if defined(UNIX) || defined(VMS) || defined(FEAT_GUI) || defined(PROTO) |
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244 /* |
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245 * Common code for mch_inchar() and gui_inchar(): Wait for a while or |
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246 * indefinitely until characters are available, dealing with timers and |
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247 * messages on channels. |
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248 * |
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249 * "buf" may be NULL if the available characters are not to be returned, only |
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250 * check if they are available. |
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251 * |
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252 * Return the number of characters that are available. |
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253 * If "wtime" == 0 do not wait for characters. |
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254 * If "wtime" == n wait a short time for characters. |
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255 * If "wtime" == -1 wait forever for characters. |
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256 */ |
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257 int |
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258 inchar_loop( |
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259 char_u *buf, |
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260 int maxlen, |
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261 long wtime, // don't use "time", MIPS cannot handle it |
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262 int tb_change_cnt, |
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263 int (*wait_func)(long wtime, int *interrupted, int ignore_input), |
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264 int (*resize_func)(int check_only)) |
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265 { |
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266 int len; |
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267 int interrupted = FALSE; |
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268 int did_call_wait_func = FALSE; |
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269 int did_start_blocking = FALSE; |
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270 long wait_time; |
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271 long elapsed_time = 0; |
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272 #ifdef ELAPSED_FUNC |
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273 elapsed_T start_tv; |
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274 |
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275 ELAPSED_INIT(start_tv); |
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276 #endif |
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277 |
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278 // repeat until we got a character or waited long enough |
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279 for (;;) |
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280 { |
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281 // Check if window changed size while we were busy, perhaps the ":set |
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282 // columns=99" command was used. |
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283 if (resize_func != NULL) |
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284 resize_func(FALSE); |
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285 |
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286 #ifdef MESSAGE_QUEUE |
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287 // Only process messages when waiting. |
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288 if (wtime != 0) |
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289 { |
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290 parse_queued_messages(); |
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291 // If input was put directly in typeahead buffer bail out here. |
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292 if (typebuf_changed(tb_change_cnt)) |
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293 return 0; |
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294 } |
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295 #endif |
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296 if (wtime < 0 && did_start_blocking) |
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297 // blocking and already waited for p_ut |
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298 wait_time = -1; |
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299 else |
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300 { |
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301 if (wtime >= 0) |
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302 wait_time = wtime; |
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303 else |
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304 // going to block after p_ut |
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305 wait_time = p_ut; |
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306 #ifdef ELAPSED_FUNC |
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307 elapsed_time = ELAPSED_FUNC(start_tv); |
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308 #endif |
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309 wait_time -= elapsed_time; |
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310 |
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311 // If the waiting time is now zero or less, we timed out. However, |
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312 // loop at least once to check for characters and events. Matters |
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313 // when "wtime" is zero. |
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314 if (wait_time <= 0 && did_call_wait_func) |
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315 { |
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316 if (wtime >= 0) |
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317 // no character available within "wtime" |
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318 return 0; |
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319 |
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320 // No character available within 'updatetime'. |
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321 did_start_blocking = TRUE; |
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322 if (trigger_cursorhold() && maxlen >= 3 |
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323 && !typebuf_changed(tb_change_cnt)) |
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324 { |
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325 // Put K_CURSORHOLD in the input buffer or return it. |
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326 if (buf == NULL) |
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327 { |
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328 char_u ibuf[3]; |
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329 |
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330 ibuf[0] = CSI; |
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331 ibuf[1] = KS_EXTRA; |
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332 ibuf[2] = (int)KE_CURSORHOLD; |
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333 add_to_input_buf(ibuf, 3); |
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334 } |
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335 else |
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336 { |
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337 buf[0] = K_SPECIAL; |
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338 buf[1] = KS_EXTRA; |
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339 buf[2] = (int)KE_CURSORHOLD; |
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340 } |
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341 return 3; |
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342 } |
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343 |
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344 // There is no character available within 'updatetime' seconds: |
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345 // flush all the swap files to disk. Also done when |
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346 // interrupted by SIGWINCH. |
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347 before_blocking(); |
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348 continue; |
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349 } |
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350 } |
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351 |
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352 #ifdef FEAT_JOB_CHANNEL |
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353 if (wait_time < 0 || wait_time > 100L) |
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354 { |
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355 // Checking if a job ended requires polling. Do this at least |
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356 // every 100 msec. |
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357 if (has_pending_job()) |
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358 wait_time = 100L; |
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359 |
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360 // If there is readahead then parse_queued_messages() timed out and |
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361 // we should call it again soon. |
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362 if (channel_any_readahead()) |
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363 wait_time = 10L; |
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364 } |
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365 #endif |
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366 #ifdef FEAT_BEVAL_GUI |
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367 if (p_beval && wait_time > 100L) |
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368 // The 'balloonexpr' may indirectly invoke a callback while waiting |
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369 // for a character, need to check often. |
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370 wait_time = 100L; |
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371 #endif |
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372 |
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373 // Wait for a character to be typed or another event, such as the winch |
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374 // signal or an event on the monitored file descriptors. |
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375 did_call_wait_func = TRUE; |
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376 if (wait_func(wait_time, &interrupted, FALSE)) |
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377 { |
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378 // If input was put directly in typeahead buffer bail out here. |
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379 if (typebuf_changed(tb_change_cnt)) |
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380 return 0; |
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381 |
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382 // We might have something to return now. |
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383 if (buf == NULL) |
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384 // "buf" is NULL, we were just waiting, not actually getting |
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385 // input. |
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386 return input_available(); |
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387 |
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388 len = read_from_input_buf(buf, (long)maxlen); |
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389 if (len > 0) |
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390 return len; |
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391 continue; |
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392 } |
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393 // Timed out or interrupted with no character available. |
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394 |
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395 #ifndef ELAPSED_FUNC |
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396 // estimate the elapsed time |
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397 elapsed_time += wait_time; |
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398 #endif |
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399 |
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400 if ((resize_func != NULL && resize_func(TRUE)) |
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401 #if defined(FEAT_CLIENTSERVER) && defined(UNIX) |
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402 || server_waiting() |
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403 #endif |
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404 #ifdef MESSAGE_QUEUE |
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405 || interrupted |
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406 #endif |
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407 || wait_time > 0 |
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408 || (wtime < 0 && !did_start_blocking)) |
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409 // no character available, but something to be done, keep going |
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410 continue; |
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411 |
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412 // no character available or interrupted, return zero |
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413 break; |
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414 } |
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415 return 0; |
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416 } |
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417 #endif |
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418 |
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419 #if defined(FEAT_TIMERS) || defined(PROTO) |
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420 /* |
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421 * Wait for a timer to fire or "wait_func" to return non-zero. |
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422 * Returns OK when something was read. |
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423 * Returns FAIL when it timed out or was interrupted. |
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424 */ |
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425 int |
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426 ui_wait_for_chars_or_timer( |
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427 long wtime, |
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428 int (*wait_func)(long wtime, int *interrupted, int ignore_input), |
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429 int *interrupted, |
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430 int ignore_input) |
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431 { |
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432 int due_time; |
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433 long remaining = wtime; |
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434 int tb_change_cnt = typebuf.tb_change_cnt; |
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435 # ifdef FEAT_JOB_CHANNEL |
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436 int brief_wait = FALSE; |
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437 # endif |
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438 |
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439 // When waiting very briefly don't trigger timers. |
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440 if (wtime >= 0 && wtime < 10L) |
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441 return wait_func(wtime, NULL, ignore_input); |
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442 |
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443 while (wtime < 0 || remaining > 0) |
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444 { |
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445 // Trigger timers and then get the time in wtime until the next one is |
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446 // due. Wait up to that time. |
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447 due_time = check_due_timer(); |
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448 if (typebuf.tb_change_cnt != tb_change_cnt) |
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449 { |
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450 // timer may have used feedkeys() |
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451 return FAIL; |
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452 } |
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453 if (due_time <= 0 || (wtime > 0 && due_time > remaining)) |
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454 due_time = remaining; |
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455 # if defined(FEAT_JOB_CHANNEL) || defined(FEAT_SOUND_CANBERRA) |
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456 if ((due_time < 0 || due_time > 10L) && ( |
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457 # if defined(FEAT_JOB_CHANNEL) |
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458 ( |
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459 # if defined(FEAT_GUI) |
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460 !gui.in_use && |
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461 # endif |
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462 (has_pending_job() || channel_any_readahead())) |
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463 # ifdef FEAT_SOUND_CANBERRA |
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464 || |
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465 # endif |
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466 # endif |
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467 # ifdef FEAT_SOUND_CANBERRA |
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468 has_any_sound_callback() |
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469 # endif |
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470 )) |
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471 { |
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472 // There is a pending job or channel, should return soon in order |
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473 // to handle them ASAP. Do check for input briefly. |
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474 due_time = 10L; |
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475 # ifdef FEAT_JOB_CHANNEL |
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476 brief_wait = TRUE; |
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477 # endif |
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478 } |
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479 # endif |
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480 if (wait_func(due_time, interrupted, ignore_input)) |
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481 return OK; |
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482 if ((interrupted != NULL && *interrupted) |
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483 # ifdef FEAT_JOB_CHANNEL |
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484 || brief_wait |
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485 # endif |
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486 ) |
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487 // Nothing available, but need to return so that side effects get |
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488 // handled, such as handling a message on a channel. |
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489 return FAIL; |
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490 if (wtime > 0) |
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491 remaining -= due_time; |
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492 } |
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493 return FAIL; |
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494 } |
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495 #endif |
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496 |
7 | 497 /* |
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498 * Return non-zero if a character is available. |
7 | 499 */ |
500 int | |
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501 ui_char_avail(void) |
7 | 502 { |
503 #ifdef FEAT_GUI | |
504 if (gui.in_use) | |
505 { | |
506 gui_mch_update(); | |
507 return input_available(); | |
508 } | |
509 #endif | |
510 #ifndef NO_CONSOLE | |
511 # ifdef NO_CONSOLE_INPUT | |
512 if (no_console_input()) | |
513 return 0; | |
514 # endif | |
515 return mch_char_avail(); | |
516 #else | |
517 return 0; | |
518 #endif | |
519 } | |
520 | |
521 /* | |
522 * Delay for the given number of milliseconds. If ignoreinput is FALSE then we | |
523 * cancel the delay if a key is hit. | |
524 */ | |
525 void | |
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526 ui_delay(long msec, int ignoreinput) |
7 | 527 { |
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528 #ifdef FEAT_JOB_CHANNEL |
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529 ch_log(NULL, "ui_delay(%ld)", msec); |
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530 #endif |
7 | 531 #ifdef FEAT_GUI |
532 if (gui.in_use && !ignoreinput) | |
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533 gui_wait_for_chars(msec, typebuf.tb_change_cnt); |
7 | 534 else |
535 #endif | |
536 mch_delay(msec, ignoreinput); | |
537 } | |
538 | |
539 /* | |
540 * If the machine has job control, use it to suspend the program, | |
541 * otherwise fake it by starting a new shell. | |
542 * When running the GUI iconify the window. | |
543 */ | |
544 void | |
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545 ui_suspend(void) |
7 | 546 { |
547 #ifdef FEAT_GUI | |
548 if (gui.in_use) | |
549 { | |
550 gui_mch_iconify(); | |
551 return; | |
552 } | |
553 #endif | |
554 mch_suspend(); | |
555 } | |
556 | |
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557 #if !defined(UNIX) || !defined(SIGTSTP) || defined(PROTO) |
7 | 558 /* |
559 * When the OS can't really suspend, call this function to start a shell. | |
560 * This is never called in the GUI. | |
561 */ | |
562 void | |
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563 suspend_shell(void) |
7 | 564 { |
565 if (*p_sh == NUL) | |
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566 emsg(_(e_shellempty)); |
7 | 567 else |
568 { | |
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569 msg_puts(_("new shell started\n")); |
7 | 570 do_shell(NULL, 0); |
571 } | |
572 } | |
573 #endif | |
574 | |
575 /* | |
576 * Try to get the current Vim shell size. Put the result in Rows and Columns. | |
577 * Use the new sizes as defaults for 'columns' and 'lines'. | |
578 * Return OK when size could be determined, FAIL otherwise. | |
579 */ | |
580 int | |
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581 ui_get_shellsize(void) |
7 | 582 { |
583 int retval; | |
584 | |
585 #ifdef FEAT_GUI | |
586 if (gui.in_use) | |
587 retval = gui_get_shellsize(); | |
588 else | |
589 #endif | |
590 retval = mch_get_shellsize(); | |
591 | |
592 check_shellsize(); | |
593 | |
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594 // adjust the default for 'lines' and 'columns' |
7 | 595 if (retval == OK) |
596 { | |
597 set_number_default("lines", Rows); | |
598 set_number_default("columns", Columns); | |
599 } | |
600 return retval; | |
601 } | |
602 | |
603 /* | |
604 * Set the size of the Vim shell according to Rows and Columns, if possible. | |
605 * The gui_set_shellsize() or mch_set_shellsize() function will try to set the | |
606 * new size. If this is not possible, it will adjust Rows and Columns. | |
607 */ | |
608 void | |
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609 ui_set_shellsize( |
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610 int mustset UNUSED) // set by the user |
7 | 611 { |
612 #ifdef FEAT_GUI | |
613 if (gui.in_use) | |
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614 gui_set_shellsize(mustset, TRUE, RESIZE_BOTH); |
7 | 615 else |
616 #endif | |
617 mch_set_shellsize(); | |
618 } | |
619 | |
620 /* | |
621 * Called when Rows and/or Columns changed. Adjust scroll region and mouse | |
622 * region. | |
623 */ | |
624 void | |
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625 ui_new_shellsize(void) |
7 | 626 { |
627 if (full_screen && !exiting) | |
628 { | |
629 #ifdef FEAT_GUI | |
630 if (gui.in_use) | |
631 gui_new_shellsize(); | |
632 else | |
633 #endif | |
634 mch_new_shellsize(); | |
635 } | |
636 } | |
637 | |
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638 #if ((defined(FEAT_EVAL) || defined(FEAT_TERMINAL)) \ |
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639 && (defined(FEAT_GUI) \ |
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640 || defined(MSWIN) \ |
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641 || (defined(HAVE_TGETENT) && defined(FEAT_TERMRESPONSE)))) \ |
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642 || defined(PROTO) |
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643 /* |
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644 * Get the window position in pixels, if possible. |
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645 * Return FAIL when not possible. |
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646 */ |
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647 int |
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648 ui_get_winpos(int *x, int *y, varnumber_T timeout UNUSED) |
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649 { |
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650 # ifdef FEAT_GUI |
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651 if (gui.in_use) |
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652 return gui_mch_get_winpos(x, y); |
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653 # endif |
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654 # if defined(MSWIN) && (!defined(FEAT_GUI) || defined(VIMDLL)) |
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655 return mch_get_winpos(x, y); |
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656 # else |
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657 # if defined(HAVE_TGETENT) && defined(FEAT_TERMRESPONSE) |
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658 return term_get_winpos(x, y, timeout); |
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659 # else |
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660 return FAIL; |
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661 # endif |
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662 # endif |
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663 } |
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664 #endif |
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665 |
7 | 666 void |
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667 ui_breakcheck(void) |
7 | 668 { |
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669 ui_breakcheck_force(FALSE); |
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670 } |
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671 |
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672 /* |
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673 * When "force" is true also check when the terminal is not in raw mode. |
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674 * This is useful to read input on channels. |
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675 */ |
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676 void |
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677 ui_breakcheck_force(int force) |
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678 { |
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679 static int recursive = FALSE; |
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680 int save_updating_screen = updating_screen; |
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681 |
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682 // We could be called recursively if stderr is redirected, calling |
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683 // fill_input_buf() calls settmode() when stdin isn't a tty. settmode() |
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684 // calls vgetorpeek() which calls ui_breakcheck() again. |
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685 if (recursive) |
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686 return; |
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687 recursive = TRUE; |
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688 |
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689 // We do not want gui_resize_shell() to redraw the screen here. |
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690 ++updating_screen; |
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691 |
7 | 692 #ifdef FEAT_GUI |
693 if (gui.in_use) | |
694 gui_mch_update(); | |
695 else | |
696 #endif | |
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697 mch_breakcheck(force); |
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698 |
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699 if (save_updating_screen) |
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700 updating_screen = TRUE; |
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701 else |
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702 after_updating_screen(FALSE); |
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703 |
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704 recursive = FALSE; |
7 | 705 } |
706 | |
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707 ////////////////////////////////////////////////////////////////////////////// |
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708 // Functions that handle the input buffer. |
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709 // This is used for any GUI version, and the unix terminal version. |
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710 // |
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711 // For Unix, the input characters are buffered to be able to check for a |
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712 // CTRL-C. This should be done with signals, but I don't know how to do that |
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713 // in a portable way for a tty in RAW mode. |
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714 // |
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715 // For the client-server code in the console the received keys are put in the |
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716 // input buffer. |
7 | 717 |
718 #if defined(USE_INPUT_BUF) || defined(PROTO) | |
719 | |
720 /* | |
721 * Internal typeahead buffer. Includes extra space for long key code | |
722 * descriptions which would otherwise overflow. The buffer is considered full | |
723 * when only this extra space (or part of it) remains. | |
724 */ | |
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725 #if defined(FEAT_JOB_CHANNEL) || defined(FEAT_CLIENTSERVER) |
7 | 726 /* |
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727 * NetBeans stuffs debugger commands into the input buffer. |
7 | 728 * This requires a larger buffer... |
729 * (Madsen) Go with this for remote input as well ... | |
730 */ | |
731 # define INBUFLEN 4096 | |
732 #else | |
733 # define INBUFLEN 250 | |
734 #endif | |
735 | |
736 static char_u inbuf[INBUFLEN + MAX_KEY_CODE_LEN]; | |
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737 static int inbufcount = 0; // number of chars in inbuf[] |
7 | 738 |
739 /* | |
740 * vim_is_input_buf_full(), vim_is_input_buf_empty(), add_to_input_buf(), and | |
741 * trash_input_buf() are functions for manipulating the input buffer. These | |
742 * are used by the gui_* calls when a GUI is used to handle keyboard input. | |
743 */ | |
744 | |
745 int | |
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746 vim_is_input_buf_full(void) |
7 | 747 { |
748 return (inbufcount >= INBUFLEN); | |
749 } | |
750 | |
751 int | |
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752 vim_is_input_buf_empty(void) |
7 | 753 { |
754 return (inbufcount == 0); | |
755 } | |
756 | |
757 #if defined(FEAT_OLE) || defined(PROTO) | |
758 int | |
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759 vim_free_in_input_buf(void) |
7 | 760 { |
761 return (INBUFLEN - inbufcount); | |
762 } | |
763 #endif | |
764 | |
575 | 765 #if defined(FEAT_GUI_GTK) || defined(PROTO) |
7 | 766 int |
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767 vim_used_in_input_buf(void) |
7 | 768 { |
769 return inbufcount; | |
770 } | |
771 #endif | |
772 | |
773 /* | |
774 * Return the current contents of the input buffer and make it empty. | |
775 * The returned pointer must be passed to set_input_buf() later. | |
776 */ | |
777 char_u * | |
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778 get_input_buf(void) |
7 | 779 { |
780 garray_T *gap; | |
781 | |
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782 // We use a growarray to store the data pointer and the length. |
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783 gap = ALLOC_ONE(garray_T); |
7 | 784 if (gap != NULL) |
785 { | |
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786 // Add one to avoid a zero size. |
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787 gap->ga_data = alloc(inbufcount + 1); |
7 | 788 if (gap->ga_data != NULL) |
789 mch_memmove(gap->ga_data, inbuf, (size_t)inbufcount); | |
790 gap->ga_len = inbufcount; | |
791 } | |
792 trash_input_buf(); | |
793 return (char_u *)gap; | |
794 } | |
795 | |
796 /* | |
797 * Restore the input buffer with a pointer returned from get_input_buf(). | |
798 * The allocated memory is freed, this only works once! | |
799 */ | |
800 void | |
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801 set_input_buf(char_u *p) |
7 | 802 { |
803 garray_T *gap = (garray_T *)p; | |
804 | |
805 if (gap != NULL) | |
806 { | |
807 if (gap->ga_data != NULL) | |
808 { | |
809 mch_memmove(inbuf, gap->ga_data, gap->ga_len); | |
810 inbufcount = gap->ga_len; | |
811 vim_free(gap->ga_data); | |
812 } | |
813 vim_free(gap); | |
814 } | |
815 } | |
816 | |
817 /* | |
818 * Add the given bytes to the input buffer | |
819 * Special keys start with CSI. A real CSI must have been translated to | |
820 * CSI KS_EXTRA KE_CSI. K_SPECIAL doesn't require translation. | |
821 */ | |
822 void | |
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823 add_to_input_buf(char_u *s, int len) |
7 | 824 { |
825 if (inbufcount + len > INBUFLEN + MAX_KEY_CODE_LEN) | |
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826 return; // Shouldn't ever happen! |
7 | 827 |
828 while (len--) | |
829 inbuf[inbufcount++] = *s++; | |
830 } | |
831 | |
832 /* | |
833 * Add "str[len]" to the input buffer while escaping CSI bytes. | |
834 */ | |
835 void | |
836 add_to_input_buf_csi(char_u *str, int len) | |
837 { | |
838 int i; | |
839 char_u buf[2]; | |
840 | |
841 for (i = 0; i < len; ++i) | |
842 { | |
843 add_to_input_buf(str + i, 1); | |
844 if (str[i] == CSI) | |
845 { | |
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846 // Turn CSI into K_CSI. |
7 | 847 buf[0] = KS_EXTRA; |
848 buf[1] = (int)KE_CSI; | |
849 add_to_input_buf(buf, 2); | |
850 } | |
851 } | |
852 } | |
853 | |
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854 /* |
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855 * Remove everything from the input buffer. Called when ^C is found. |
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856 */ |
7 | 857 void |
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858 trash_input_buf(void) |
7 | 859 { |
860 inbufcount = 0; | |
861 } | |
862 | |
863 /* | |
864 * Read as much data from the input buffer as possible up to maxlen, and store | |
865 * it in buf. | |
866 */ | |
867 int | |
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868 read_from_input_buf(char_u *buf, long maxlen) |
7 | 869 { |
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870 if (inbufcount == 0) // if the buffer is empty, fill it |
7 | 871 fill_input_buf(TRUE); |
872 if (maxlen > inbufcount) | |
873 maxlen = inbufcount; | |
874 mch_memmove(buf, inbuf, (size_t)maxlen); | |
875 inbufcount -= maxlen; | |
876 if (inbufcount) | |
877 mch_memmove(inbuf, inbuf + maxlen, (size_t)inbufcount); | |
878 return (int)maxlen; | |
879 } | |
880 | |
881 void | |
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882 fill_input_buf(int exit_on_error UNUSED) |
7 | 883 { |
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884 #if defined(UNIX) || defined(VMS) || defined(MACOS_X) |
7 | 885 int len; |
886 int try; | |
887 static int did_read_something = FALSE; | |
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888 static char_u *rest = NULL; // unconverted rest of previous read |
7 | 889 static int restlen = 0; |
890 int unconverted; | |
891 #endif | |
892 | |
893 #ifdef FEAT_GUI | |
294 | 894 if (gui.in_use |
895 # ifdef NO_CONSOLE_INPUT | |
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896 // Don't use the GUI input when the window hasn't been opened yet. |
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897 // We get here from ui_inchar() when we should try reading from stdin. |
294 | 898 && !no_console_input() |
899 # endif | |
900 ) | |
7 | 901 { |
902 gui_mch_update(); | |
903 return; | |
904 } | |
905 #endif | |
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906 #if defined(UNIX) || defined(VMS) || defined(MACOS_X) |
7 | 907 if (vim_is_input_buf_full()) |
908 return; | |
909 /* | |
910 * Fill_input_buf() is only called when we really need a character. | |
911 * If we can't get any, but there is some in the buffer, just return. | |
912 * If we can't get any, and there isn't any in the buffer, we give up and | |
913 * exit Vim. | |
914 */ | |
915 if (rest != NULL) | |
916 { | |
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917 // Use remainder of previous call, starts with an invalid character |
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918 // that may become valid when reading more. |
7 | 919 if (restlen > INBUFLEN - inbufcount) |
920 unconverted = INBUFLEN - inbufcount; | |
921 else | |
922 unconverted = restlen; | |
923 mch_memmove(inbuf + inbufcount, rest, unconverted); | |
924 if (unconverted == restlen) | |
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925 VIM_CLEAR(rest); |
7 | 926 else |
927 { | |
928 restlen -= unconverted; | |
929 mch_memmove(rest, rest + unconverted, restlen); | |
930 } | |
931 inbufcount += unconverted; | |
932 } | |
933 else | |
934 unconverted = 0; | |
935 | |
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936 len = 0; // to avoid gcc warning |
7 | 937 for (try = 0; try < 100; ++try) |
938 { | |
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939 size_t readlen = (size_t)((INBUFLEN - inbufcount) |
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940 / input_conv.vc_factor); |
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941 # ifdef VMS |
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942 len = vms_read((char *)inbuf + inbufcount, readlen); |
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943 # else |
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944 len = read(read_cmd_fd, (char *)inbuf + inbufcount, readlen); |
7 | 945 # endif |
169 | 946 |
7 | 947 if (len > 0 || got_int) |
948 break; | |
949 /* | |
950 * If reading stdin results in an error, continue reading stderr. | |
951 * This helps when using "foo | xargs vim". | |
952 */ | |
953 if (!did_read_something && !isatty(read_cmd_fd) && read_cmd_fd == 0) | |
954 { | |
955 int m = cur_tmode; | |
956 | |
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957 // We probably set the wrong file descriptor to raw mode. Switch |
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958 // back to cooked mode, use another descriptor and set the mode to |
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959 // what it was. |
7 | 960 settmode(TMODE_COOK); |
961 #ifdef HAVE_DUP | |
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962 // Use stderr for stdin, also works for shell commands. |
7 | 963 close(0); |
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964 vim_ignored = dup(2); |
7 | 965 #else |
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966 read_cmd_fd = 2; // read from stderr instead of stdin |
7 | 967 #endif |
968 settmode(m); | |
969 } | |
970 if (!exit_on_error) | |
971 return; | |
972 } | |
973 if (len <= 0 && !got_int) | |
974 read_error_exit(); | |
975 if (len > 0) | |
976 did_read_something = TRUE; | |
977 if (got_int) | |
978 { | |
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979 // Interrupted, pretend a CTRL-C was typed. |
7 | 980 inbuf[0] = 3; |
981 inbufcount = 1; | |
982 } | |
983 else | |
984 { | |
985 /* | |
986 * May perform conversion on the input characters. | |
987 * Include the unconverted rest of the previous call. | |
988 * If there is an incomplete char at the end it is kept for the next | |
989 * time, reading more bytes should make conversion possible. | |
990 * Don't do this in the unlikely event that the input buffer is too | |
991 * small ("rest" still contains more bytes). | |
992 */ | |
993 if (input_conv.vc_type != CONV_NONE) | |
994 { | |
995 inbufcount -= unconverted; | |
996 len = convert_input_safe(inbuf + inbufcount, | |
997 len + unconverted, INBUFLEN - inbufcount, | |
998 rest == NULL ? &rest : NULL, &restlen); | |
999 } | |
1000 while (len-- > 0) | |
1001 { | |
1002 /* | |
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1003 * If a CTRL-C was typed, remove it from the buffer and set |
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1004 * got_int. Also recognize CTRL-C with modifyOtherKeys set. |
7 | 1005 */ |
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1006 if (ctrl_c_interrupts && (inbuf[inbufcount] == 3 |
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1007 || (len >= 9 && STRNCMP(inbuf + inbufcount, |
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1008 "\033[27;5;99~", 10) == 0))) |
7 | 1009 { |
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1010 // remove everything typed before the CTRL-C |
7 | 1011 mch_memmove(inbuf, inbuf + inbufcount, (size_t)(len + 1)); |
1012 inbufcount = 0; | |
1013 got_int = TRUE; | |
1014 } | |
1015 ++inbufcount; | |
1016 } | |
1017 } | |
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1018 #endif // UNIX || VMS || MACOS_X |
7 | 1019 } |
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1020 #endif // USE_INPUT_BUF |
7 | 1021 |
1022 /* | |
1023 * Exit because of an input read error. | |
1024 */ | |
1025 void | |
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1026 read_error_exit(void) |
7 | 1027 { |
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1028 if (silent_mode) // Normal way to exit for "ex -s" |
7 | 1029 getout(0); |
1030 STRCPY(IObuff, _("Vim: Error reading input, exiting...\n")); | |
1031 preserve_exit(); | |
1032 } | |
1033 | |
1034 #if defined(CURSOR_SHAPE) || defined(PROTO) | |
1035 /* | |
1036 * May update the shape of the cursor. | |
1037 */ | |
1038 void | |
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1039 ui_cursor_shape_forced(int forced) |
7 | 1040 { |
1041 # ifdef FEAT_GUI | |
1042 if (gui.in_use) | |
1043 gui_update_cursor_later(); | |
36 | 1044 else |
7 | 1045 # endif |
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1046 term_cursor_mode(forced); |
36 | 1047 |
7 | 1048 # ifdef MCH_CURSOR_SHAPE |
1049 mch_update_cursor(); | |
1050 # endif | |
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1051 |
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1052 # ifdef FEAT_CONCEAL |
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1053 conceal_check_cursor_line(); |
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1054 # endif |
7 | 1055 } |
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1056 |
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1057 void |
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1058 ui_cursor_shape(void) |
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1059 { |
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1060 ui_cursor_shape_forced(FALSE); |
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1061 } |
7 | 1062 #endif |
1063 | |
1064 /* | |
1065 * Check bounds for column number | |
1066 */ | |
1067 int | |
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1068 check_col(int col) |
7 | 1069 { |
1070 if (col < 0) | |
1071 return 0; | |
1072 if (col >= (int)screen_Columns) | |
1073 return (int)screen_Columns - 1; | |
1074 return col; | |
1075 } | |
1076 | |
1077 /* | |
1078 * Check bounds for row number | |
1079 */ | |
1080 int | |
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1081 check_row(int row) |
7 | 1082 { |
1083 if (row < 0) | |
1084 return 0; | |
1085 if (row >= (int)screen_Rows) | |
1086 return (int)screen_Rows - 1; | |
1087 return row; | |
1088 } | |
1089 | |
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1090 #if defined(FEAT_GUI) || defined(MSWIN) || defined(PROTO) |
7 | 1091 /* |
1092 * Called when focus changed. Used for the GUI or for systems where this can | |
1093 * be done in the console (Win32). | |
1094 */ | |
1095 void | |
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1096 ui_focus_change( |
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1097 int in_focus) // TRUE if focus gained. |
7 | 1098 { |
1099 static time_t last_time = (time_t)0; | |
1100 int need_redraw = FALSE; | |
1101 | |
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1102 // When activated: Check if any file was modified outside of Vim. |
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1103 // Only do this when not done within the last two seconds (could get |
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1104 // several events in a row). |
7 | 1105 if (in_focus && last_time + 2 < time(NULL)) |
1106 { | |
1107 need_redraw = check_timestamps( | |
1108 # ifdef FEAT_GUI | |
1109 gui.in_use | |
1110 # else | |
1111 FALSE | |
1112 # endif | |
1113 ); | |
1114 last_time = time(NULL); | |
1115 } | |
1116 | |
1117 /* | |
1118 * Fire the focus gained/lost autocommand. | |
1119 */ | |
1120 need_redraw |= apply_autocmds(in_focus ? EVENT_FOCUSGAINED | |
1121 : EVENT_FOCUSLOST, NULL, NULL, FALSE, curbuf); | |
1122 | |
1123 if (need_redraw) | |
1124 { | |
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1125 // Something was executed, make sure the cursor is put back where it |
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1126 // belongs. |
7 | 1127 need_wait_return = FALSE; |
1128 | |
1129 if (State & CMDLINE) | |
1130 redrawcmdline(); | |
1131 else if (State == HITRETURN || State == SETWSIZE || State == ASKMORE | |
1132 || State == EXTERNCMD || State == CONFIRM || exmode_active) | |
1133 repeat_message(); | |
1134 else if ((State & NORMAL) || (State & INSERT)) | |
1135 { | |
1136 if (must_redraw != 0) | |
1137 update_screen(0); | |
1138 setcursor(); | |
1139 } | |
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1140 cursor_on(); // redrawing may have switched it off |
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1141 out_flush_cursor(FALSE, TRUE); |
7 | 1142 # ifdef FEAT_GUI |
1143 if (gui.in_use) | |
1144 gui_update_scrollbars(FALSE); | |
1145 # endif | |
1146 } | |
1147 #ifdef FEAT_TITLE | |
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1148 // File may have been changed from 'readonly' to 'noreadonly' |
7 | 1149 if (need_maketitle) |
1150 maketitle(); | |
1151 #endif | |
1152 } | |
1153 #endif | |
1154 | |
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1155 #if defined(HAVE_INPUT_METHOD) || defined(PROTO) |
7 | 1156 /* |
1157 * Save current Input Method status to specified place. | |
1158 */ | |
1159 void | |
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1160 im_save_status(long *psave) |
7 | 1161 { |
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1162 // Don't save when 'imdisable' is set or "xic" is NULL, IM is always |
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1163 // disabled then (but might start later). |
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1164 // Also don't save when inside a mapping, vgetc_im_active has not been set |
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1165 // then. |
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1166 // And don't save when the keys were stuffed (e.g., for a "." command). |
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1167 // And don't save when the GUI is running but our window doesn't have |
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1168 // input focus (e.g., when a find dialog is open). |
7 | 1169 if (!p_imdisable && KeyTyped && !KeyStuffed |
1170 # ifdef FEAT_XIM | |
1171 && xic != NULL | |
1172 # endif | |
1173 # ifdef FEAT_GUI | |
1174 && (!gui.in_use || gui.in_focus) | |
1175 # endif | |
1176 ) | |
1177 { | |
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1178 // Do save when IM is on, or IM is off and saved status is on. |
7 | 1179 if (vgetc_im_active) |
1180 *psave = B_IMODE_IM; | |
1181 else if (*psave == B_IMODE_IM) | |
1182 *psave = B_IMODE_NONE; | |
1183 } | |
1184 } | |
1185 #endif |