Mercurial > vim
annotate src/terminal.c @ 11690:ce434212d682 v8.0.0728
patch 8.0.0728: the terminal structure is never freed
commit https://github.com/vim/vim/commit/96ca27a0ee8ae738cab9fb386984c75c6821e31a
Author: Bram Moolenaar <Bram@vim.org>
Date: Mon Jul 17 23:20:24 2017 +0200
patch 8.0.0728: the terminal structure is never freed
Problem: The terminal structure is never freed.
Solution: Free the structure and unreference what it contains.
author | Christian Brabandt <cb@256bit.org> |
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date | Mon, 17 Jul 2017 23:30:03 +0200 |
parents | 1ce1376fbbf8 |
children | 8f5840a59b31 |
rev | line source |
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1 /* vi:set ts=8 sts=4 sw=4 noet: |
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2 * |
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3 * VIM - Vi IMproved by Bram Moolenaar |
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4 * |
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5 * Do ":help uganda" in Vim to read copying and usage conditions. |
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6 * Do ":help credits" in Vim to see a list of people who contributed. |
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7 * See README.txt for an overview of the Vim source code. |
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8 */ |
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9 |
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10 /* |
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11 * Terminal window support, see ":help :terminal". |
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12 * |
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13 * For a terminal one VTerm is constructed. This uses libvterm. A copy of |
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14 * that library is in the libvterm directory. |
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15 * |
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16 * The VTerm invokes callbacks when its screen contents changes. The line |
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17 * range is stored in tl_dirty_row_start and tl_dirty_row_end. Once in a |
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18 * while, if the terminal window is visible, the screen contents is drawn. |
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19 * |
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20 * If the terminal window has keyboard focus, typed keys are converted to the |
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21 * terminal encoding and writting to the job over a channel. |
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22 * |
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23 * If the job produces output, it is written to the VTerm. |
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24 * This will result in screen updates. |
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25 * |
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26 * TODO: |
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27 * - pressing Enter sends two CR and/or NL characters to "bash -i"? |
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28 * Passing Enter as NL seems to work. |
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29 * - set buffer options to be scratch, hidden, nomodifiable, etc. |
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30 * - set buffer name to command, add (1) to avoid duplicates. |
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31 * - If [command] is not given the 'shell' option is used. |
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32 * - if the job ends, write "-- JOB ENDED --" in the terminal |
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33 * - when closing window and job ended, delete the terminal |
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34 * - when closing window and job has not ended, make terminal hidden? |
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35 * - Use a pty for I/O with the job. |
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36 * - Windows implementation: |
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37 * (WiP): https://github.com/mattn/vim/tree/terminal |
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38 * src/os_win32.c mch_open_terminal() |
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39 Using winpty ? |
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40 * - command line completion for :terminal |
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41 * - support fixed size when 'termsize' is "rowsXcols". |
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42 * - support minimal size when 'termsize' is "rows*cols". |
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43 * - support minimal size when 'termsize' is empty. |
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44 * - implement ":buf {term-buf-name}" |
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45 * - implement term_list() list of buffers with a terminal |
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46 * - implement term_getsize(buf) |
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47 * - implement term_setsize(buf) |
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48 * - implement term_sendkeys(buf, keys) send keystrokes to a terminal |
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49 * - implement term_wait(buf) wait for screen to be updated |
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50 * - implement term_scrape(buf, row) inspect terminal screen |
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51 * - implement term_open(command, options) open terminal window |
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52 * - implement term_getjob(buf) |
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53 * - implement 'termkey' |
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54 */ |
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55 |
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56 #include "vim.h" |
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57 |
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58 #ifdef FEAT_TERMINAL |
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59 |
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60 #include "libvterm/include/vterm.h" |
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61 |
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62 /* typedef term_T in structs.h */ |
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63 struct terminal_S { |
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64 term_T *tl_next; |
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65 |
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66 VTerm *tl_vterm; |
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67 job_T *tl_job; |
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68 buf_T *tl_buffer; |
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69 |
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70 /* Range of screen rows to update. Zero based. */ |
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71 int tl_dirty_row_start; /* -1 if nothing dirty */ |
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72 int tl_dirty_row_end; /* row below last one to update */ |
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73 |
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74 pos_T tl_cursor; |
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75 }; |
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76 |
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77 #define MAX_ROW 999999 /* used for tl_dirty_row_end to update all rows */ |
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78 |
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79 /* |
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80 * List of all active terminals. |
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81 */ |
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82 static term_T *first_term = NULL; |
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83 |
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84 static int handle_damage(VTermRect rect, void *user); |
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85 static int handle_moverect(VTermRect dest, VTermRect src, void *user); |
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86 static int handle_movecursor(VTermPos pos, VTermPos oldpos, int visible, void *user); |
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87 static int handle_resize(int rows, int cols, void *user); |
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88 |
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89 static VTermScreenCallbacks screen_callbacks = { |
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90 handle_damage, /* damage */ |
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91 handle_moverect, /* moverect */ |
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92 handle_movecursor, /* movecursor */ |
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93 NULL, /* settermprop */ |
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94 NULL, /* bell */ |
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95 handle_resize, /* resize */ |
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96 NULL, /* sb_pushline */ |
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97 NULL /* sb_popline */ |
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98 }; |
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99 |
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100 /* |
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101 * ":terminal": open a terminal window and execute a job in it. |
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102 */ |
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103 void |
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104 ex_terminal(exarg_T *eap) |
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105 { |
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106 int rows; |
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107 int cols; |
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108 exarg_T split_ea; |
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109 win_T *old_curwin = curwin; |
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110 typval_T argvars[2]; |
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111 term_T *term; |
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112 VTerm *vterm; |
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113 VTermScreen *screen; |
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114 jobopt_T opt; |
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115 |
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116 if (check_restricted() || check_secure()) |
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117 return; |
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118 |
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119 term = (term_T *)alloc_clear(sizeof(term_T)); |
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120 if (term == NULL) |
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121 return; |
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122 term->tl_dirty_row_end = MAX_ROW; |
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123 |
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124 /* Open a new window or tab. */ |
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125 vim_memset(&split_ea, 0, sizeof(split_ea)); |
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126 split_ea.cmdidx = CMD_new; |
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127 split_ea.cmd = (char_u *)"new"; |
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128 split_ea.arg = (char_u *)""; |
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129 ex_splitview(&split_ea); |
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130 if (curwin == old_curwin) |
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131 { |
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132 /* split failed */ |
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133 vim_free(term); |
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134 return; |
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135 } |
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136 term->tl_buffer = curbuf; |
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137 |
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138 curbuf->b_term = term; |
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139 term->tl_next = first_term; |
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140 first_term = term; |
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141 |
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142 /* TODO: set buffer type, hidden, etc. */ |
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143 |
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144 if (*curwin->w_p_tms != NUL) |
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145 { |
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146 char_u *p = vim_strchr(curwin->w_p_tms, 'x') + 1; |
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147 |
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148 rows = atoi((char *)curwin->w_p_tms); |
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149 cols = atoi((char *)p); |
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150 /* TODO: resize window if possible. */ |
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151 } |
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152 else |
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153 { |
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154 rows = curwin->w_height; |
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155 cols = curwin->w_width; |
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156 } |
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157 |
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158 vterm = vterm_new(rows, cols); |
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159 term->tl_vterm = vterm; |
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160 screen = vterm_obtain_screen(vterm); |
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161 vterm_screen_set_callbacks(screen, &screen_callbacks, term); |
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162 /* TODO: depends on 'encoding'. */ |
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163 vterm_set_utf8(vterm, 1); |
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164 /* Required to initialize most things. */ |
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165 vterm_screen_reset(screen, 1 /* hard */); |
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166 |
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167 /* By default NL means CR-NL. */ |
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168 vterm_input_write(vterm, "\x1b[20h", 5); |
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169 |
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170 argvars[0].v_type = VAR_STRING; |
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171 argvars[0].vval.v_string = eap->arg; |
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172 |
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173 clear_job_options(&opt); |
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174 opt.jo_mode = MODE_RAW; |
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175 opt.jo_out_mode = MODE_RAW; |
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176 opt.jo_err_mode = MODE_RAW; |
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177 opt.jo_set = JO_MODE | JO_OUT_MODE | JO_ERR_MODE; |
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178 opt.jo_io[PART_OUT] = JIO_BUFFER; |
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179 opt.jo_io[PART_ERR] = JIO_BUFFER; |
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180 opt.jo_set |= JO_OUT_IO + (JO_OUT_IO << (PART_ERR - PART_OUT)); |
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181 opt.jo_io_buf[PART_OUT] = curbuf->b_fnum; |
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182 opt.jo_io_buf[PART_ERR] = curbuf->b_fnum; |
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183 opt.jo_set |= JO_OUT_BUF + (JO_OUT_BUF << (PART_ERR - PART_OUT)); |
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184 |
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185 term->tl_job = job_start(argvars, &opt); |
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186 |
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187 if (term->tl_job == NULL) |
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188 /* Wiping out the buffer will also close the window. */ |
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189 do_buffer(DOBUF_WIPE, DOBUF_CURRENT, FORWARD, 0, TRUE); |
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190 |
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191 /* Setup pty, see mch_call_shell(). */ |
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192 } |
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193 |
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194 /* |
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195 * Free a terminal and everything it refers to. |
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196 * Kills the job if there is one. |
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197 * Called when wiping out a buffer. |
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198 */ |
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199 void |
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200 free_terminal(term_T *term) |
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201 { |
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202 term_T *tp; |
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203 |
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204 if (term == NULL) |
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205 return; |
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206 if (first_term == term) |
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207 first_term = term->tl_next; |
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208 else |
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209 for (tp = first_term; tp->tl_next != NULL; tp = tp->tl_next) |
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210 if (tp->tl_next == term) |
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211 { |
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212 tp->tl_next = term->tl_next; |
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213 break; |
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214 } |
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215 |
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216 if (term->tl_job != NULL) |
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217 { |
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218 if (term->tl_job->jv_status != JOB_ENDED) |
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219 job_stop(term->tl_job, NULL, "kill"); |
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220 job_unref(term->tl_job); |
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221 } |
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222 |
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223 vterm_free(term->tl_vterm); |
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224 vim_free(term); |
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225 } |
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226 |
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227 /* |
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228 * Invoked when "msg" output from a job was received. Write it to the terminal |
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229 * of "buffer". |
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230 */ |
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231 void |
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232 write_to_term(buf_T *buffer, char_u *msg, channel_T *channel) |
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233 { |
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234 size_t len = STRLEN(msg); |
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235 VTerm *vterm = buffer->b_term->tl_vterm; |
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236 |
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237 ch_logn(channel, "writing %d bytes to terminal", (int)len); |
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238 vterm_input_write(vterm, (char *)msg, len); |
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239 vterm_screen_flush_damage(vterm_obtain_screen(vterm)); |
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240 |
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241 /* TODO: only update once in a while. */ |
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242 update_screen(0); |
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243 setcursor(); |
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244 out_flush(); |
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245 } |
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246 |
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247 /* |
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248 * Called to update the window that contains the terminal. |
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249 */ |
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250 void |
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251 term_update_window(win_T *wp) |
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252 { |
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253 int vterm_rows; |
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254 int vterm_cols; |
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255 VTerm *vterm = wp->w_buffer->b_term->tl_vterm; |
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256 VTermScreen *screen = vterm_obtain_screen(vterm); |
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257 VTermPos pos; |
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258 |
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259 vterm_get_size(vterm, &vterm_rows, &vterm_cols); |
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260 |
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261 /* TODO: Only redraw what changed. */ |
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262 for (pos.row = 0; pos.row < wp->w_height; ++pos.row) |
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263 { |
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264 int off = screen_get_current_line_off(); |
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265 |
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266 if (pos.row < vterm_rows) |
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267 for (pos.col = 0; pos.col < wp->w_width && pos.col < vterm_cols; |
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268 ++pos.col) |
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269 { |
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270 VTermScreenCell cell; |
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271 int c; |
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272 |
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273 vterm_screen_get_cell(screen, pos, &cell); |
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274 /* TODO: use cell.attrs and colors */ |
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275 /* TODO: use cell.width */ |
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276 /* TODO: multi-byte chars */ |
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277 c = cell.chars[0]; |
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278 ScreenLines[off] = c == NUL ? ' ' : c; |
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279 ScreenAttrs[off] = 0; |
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280 ++off; |
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281 } |
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282 |
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283 screen_line(wp->w_winrow + pos.row, wp->w_wincol, pos.col, wp->w_width, |
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284 FALSE); |
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285 } |
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286 } |
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287 |
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288 static int |
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289 handle_damage(VTermRect rect, void *user) |
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290 { |
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291 term_T *term = (term_T *)user; |
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292 |
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293 term->tl_dirty_row_start = MIN(term->tl_dirty_row_start, rect.start_row); |
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294 term->tl_dirty_row_end = MAX(term->tl_dirty_row_end, rect.end_row); |
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295 redraw_buf_later(term->tl_buffer, NOT_VALID); |
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296 return 1; |
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297 } |
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298 |
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299 static int |
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300 handle_moverect(VTermRect dest, VTermRect src, void *user) |
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301 { |
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302 term_T *term = (term_T *)user; |
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303 |
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304 /* TODO */ |
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305 redraw_buf_later(term->tl_buffer, NOT_VALID); |
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306 return 1; |
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307 } |
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308 |
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309 static int |
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310 handle_movecursor(VTermPos pos, VTermPos oldpos, int visible, void *user) |
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311 { |
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312 term_T *term = (term_T *)user; |
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313 win_T *wp; |
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314 int is_current = FALSE; |
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315 |
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316 FOR_ALL_WINDOWS(wp) |
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317 { |
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318 if (wp->w_buffer == term->tl_buffer) |
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319 { |
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320 /* TODO: limit to window size? */ |
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321 wp->w_wrow = pos.row; |
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322 wp->w_wcol = pos.col; |
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323 if (wp == curwin) |
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324 is_current = TRUE; |
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325 } |
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326 } |
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327 |
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328 if (is_current) |
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329 { |
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330 setcursor(); |
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331 out_flush(); |
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332 } |
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333 |
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334 return 1; |
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335 } |
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336 |
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337 static int |
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338 handle_resize(int rows, int cols, void *user) |
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339 { |
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340 term_T *term = (term_T *)user; |
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341 |
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342 /* TODO: handle terminal resize. */ |
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343 redraw_buf_later(term->tl_buffer, NOT_VALID); |
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344 return 1; |
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345 } |
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346 |
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347 /* TODO: Use win_del_lines() to make scroll up efficient. */ |
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348 |
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349 |
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350 /* |
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351 * Wait for input and send it to the job. |
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352 * Return when a CTRL-W command is typed that moves to another window. |
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353 */ |
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354 void |
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355 terminal_loop(void) |
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356 { |
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357 VTerm *vterm = curbuf->b_term->tl_vterm; |
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358 char buf[200]; |
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359 |
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360 for (;;) |
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361 { |
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362 int c; |
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363 VTermKey key = VTERM_KEY_NONE; |
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364 VTermModifier mod = VTERM_MOD_NONE; |
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365 size_t len; |
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366 |
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367 update_screen(0); |
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368 setcursor(); |
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369 out_flush(); |
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370 |
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371 c = vgetc(); |
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372 switch (c) |
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373 { |
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374 case Ctrl_W: |
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375 stuffcharReadbuff(Ctrl_W); |
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376 return; |
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377 |
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378 /* TODO: which of these two should be used? */ |
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379 #if 0 |
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380 case CAR: key = VTERM_KEY_ENTER; break; |
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381 #else |
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382 case CAR: c = NL; break; |
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383 #endif |
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384 case ESC: key = VTERM_KEY_ESCAPE; break; |
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385 case K_BS: key = VTERM_KEY_BACKSPACE; break; |
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386 case K_DEL: key = VTERM_KEY_DEL; break; |
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387 case K_DOWN: key = VTERM_KEY_DOWN; break; |
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388 case K_END: key = VTERM_KEY_END; break; |
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389 case K_F10: key = VTERM_KEY_FUNCTION(10); break; |
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390 case K_F11: key = VTERM_KEY_FUNCTION(11); break; |
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391 case K_F12: key = VTERM_KEY_FUNCTION(12); break; |
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392 case K_F1: key = VTERM_KEY_FUNCTION(1); break; |
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393 case K_F2: key = VTERM_KEY_FUNCTION(2); break; |
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394 case K_F3: key = VTERM_KEY_FUNCTION(3); break; |
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395 case K_F4: key = VTERM_KEY_FUNCTION(4); break; |
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396 case K_F5: key = VTERM_KEY_FUNCTION(5); break; |
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397 case K_F6: key = VTERM_KEY_FUNCTION(6); break; |
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398 case K_F7: key = VTERM_KEY_FUNCTION(7); break; |
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399 case K_F8: key = VTERM_KEY_FUNCTION(8); break; |
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400 case K_F9: key = VTERM_KEY_FUNCTION(9); break; |
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401 case K_HOME: key = VTERM_KEY_HOME; break; |
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402 case K_INS: key = VTERM_KEY_INS; break; |
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403 case K_K0: key = VTERM_KEY_KP_0; break; |
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404 case K_K1: key = VTERM_KEY_KP_1; break; |
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405 case K_K2: key = VTERM_KEY_KP_2; break; |
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406 case K_K3: key = VTERM_KEY_KP_3; break; |
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407 case K_K4: key = VTERM_KEY_KP_4; break; |
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408 case K_K5: key = VTERM_KEY_KP_5; break; |
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409 case K_K6: key = VTERM_KEY_KP_6; break; |
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410 case K_K7: key = VTERM_KEY_KP_7; break; |
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411 case K_K8: key = VTERM_KEY_KP_8; break; |
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412 case K_K9: key = VTERM_KEY_KP_9; break; |
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413 case K_KDEL: key = VTERM_KEY_DEL; break; /* TODO */ |
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414 case K_KDIVIDE: key = VTERM_KEY_KP_DIVIDE; break; |
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415 case K_KEND: key = VTERM_KEY_KP_1; break; /* TODO */ |
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416 case K_KENTER: key = VTERM_KEY_KP_ENTER; break; |
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417 case K_KHOME: key = VTERM_KEY_KP_7; break; /* TODO */ |
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418 case K_KINS: key = VTERM_KEY_KP_0; break; /* TODO */ |
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419 case K_KMINUS: key = VTERM_KEY_KP_MINUS; break; |
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420 case K_KMULTIPLY: key = VTERM_KEY_KP_MULT; break; |
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421 case K_KPAGEDOWN: key = VTERM_KEY_KP_3; break; /* TODO */ |
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422 case K_KPAGEUP: key = VTERM_KEY_KP_9; break; /* TODO */ |
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423 case K_KPLUS: key = VTERM_KEY_KP_PLUS; break; |
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424 case K_KPOINT: key = VTERM_KEY_KP_PERIOD; break; |
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425 case K_LEFT: key = VTERM_KEY_LEFT; break; |
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426 case K_PAGEDOWN: key = VTERM_KEY_PAGEDOWN; break; |
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427 case K_PAGEUP: key = VTERM_KEY_PAGEUP; break; |
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428 case K_RIGHT: key = VTERM_KEY_RIGHT; break; |
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429 case K_UP: key = VTERM_KEY_UP; break; |
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430 case TAB: key = VTERM_KEY_TAB; break; |
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431 } |
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432 |
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433 /* |
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434 * Convert special keys to vterm keys: |
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435 * - Write keys to vterm: vterm_keyboard_key() |
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436 * - Write output to channel. |
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437 */ |
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438 if (key != VTERM_KEY_NONE) |
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439 /* Special key, let vterm convert it. */ |
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440 vterm_keyboard_key(vterm, key, mod); |
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441 else |
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442 /* Normal character, let vterm convert it. */ |
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443 vterm_keyboard_unichar(vterm, c, mod); |
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444 |
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445 /* Read back the converted escape sequence. */ |
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446 len = vterm_output_read(vterm, buf, sizeof(buf)); |
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447 |
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448 /* TODO: if FAIL is returned, stop? */ |
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449 channel_send(curbuf->b_term->tl_job->jv_channel, PART_IN, |
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450 (char_u *)buf, len, NULL); |
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451 } |
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452 } |
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453 |
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454 #endif /* FEAT_TERMINAL */ |