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annotate src/libvterm/src/vterm_internal.h @ 20488:1d595fada804 v8.2.0798

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patch 8.2.0798: libvterm code lags behind the upstream version Commit: https://github.com/vim/vim/commit/be593bf135f6967335b14ba188bd5f8f32175c75 Author: Bram Moolenaar <Bram@vim.org> Date: Tue May 19 21:20:04 2020 +0200 patch 8.2.0798: libvterm code lags behind the upstream version Problem: Libvterm code lags behind the upstream version. Solution: Include revisions 755 - 758.
author Bram Moolenaar <Bram@vim.org>
date Tue, 19 May 2020 21:30:07 +0200
parents d0bf39eb2b07
children 747a270eb1db
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #ifndef __VTERM_INTERNAL_H__
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2 #define __VTERM_INTERNAL_H__
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3
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4 #include "vterm.h"
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5
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6 #include <stdarg.h>
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7
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8 #if defined(__GNUC__) && !defined(__MINGW32__)
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9 # define INTERNAL __attribute__((visibility("internal")))
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10 # define UNUSED __attribute__((unused))
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11 #else
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12 # define INTERNAL
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13 # define UNUSED
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14 #endif
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15
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16 #ifdef DEBUG
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17 # define DEBUG_LOG(s) fprintf(stderr, s)
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18 # define DEBUG_LOG1(s, a) fprintf(stderr, s, a)
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19 # define DEBUG_LOG2(s, a, b) fprintf(stderr, s, a, b)
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20 # define DEBUG_LOG3(s, a, b, c) fprintf(stderr, s, a, b, c)
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21 #else
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22 # define DEBUG_LOG(s)
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23 # define DEBUG_LOG1(s, a)
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24 # define DEBUG_LOG2(s, a, b)
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25 # define DEBUG_LOG3(s, a, b, c)
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26 #endif
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27
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28 #define ESC_S "\x1b"
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29
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30 #define INTERMED_MAX 16
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31
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32 #define CSI_ARGS_MAX 16
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33 #define CSI_LEADER_MAX 16
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35 #define BUFIDX_PRIMARY 0
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36 #define BUFIDX_ALTSCREEN 1
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37
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38 typedef struct VTermEncoding VTermEncoding;
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39
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40 typedef struct {
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41 VTermEncoding *enc;
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42
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43 // This size should be increased if required by other stateful encodings
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44 char data[4*sizeof(uint32_t)];
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45 } VTermEncodingInstance;
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46
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47 struct VTermPen
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48 {
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49 VTermColor fg;
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50 VTermColor bg;
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51 unsigned int bold:1;
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52 unsigned int underline:2;
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53 unsigned int italic:1;
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54 unsigned int blink:1;
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55 unsigned int reverse:1;
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56 unsigned int strike:1;
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57 unsigned int font:4; // To store 0-9
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58 };
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59
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60 int vterm_color_equal(VTermColor a, VTermColor b);
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61
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62 #if defined(DEFINE_INLINES) || USE_INLINE
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63 INLINE int vterm_color_equal(VTermColor a, VTermColor b)
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64 {
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65 return a.red == b.red && a.green == b.green && a.blue == b.blue;
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66 }
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67 #endif
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68
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69 struct VTermState
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70 {
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71 VTerm *vt;
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72
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73 const VTermStateCallbacks *callbacks;
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74 void *cbdata;
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75
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76 const VTermParserCallbacks *fallbacks;
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77 void *fbdata;
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78
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79 int rows;
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80 int cols;
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81
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82 // Current cursor position
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83 VTermPos pos;
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84
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85 int at_phantom; // True if we're on the "81st" phantom column to defer a wraparound
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86
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87 int scrollregion_top;
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88 int scrollregion_bottom; // -1 means unbounded
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89 #define SCROLLREGION_BOTTOM(state) ((state)->scrollregion_bottom > -1 ? (state)->scrollregion_bottom : (state)->rows)
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90 int scrollregion_left;
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91 #define SCROLLREGION_LEFT(state) ((state)->mode.leftrightmargin ? (state)->scrollregion_left : 0)
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92 int scrollregion_right; // -1 means unbounded
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93 #define SCROLLREGION_RIGHT(state) ((state)->mode.leftrightmargin && (state)->scrollregion_right > -1 ? (state)->scrollregion_right : (state)->cols)
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94
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95 // Bitvector of tab stops
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96 unsigned char *tabstops;
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97
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98 /* Primary and Altscreen; lineinfos[1] is lazily allocated as needed */
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99 VTermLineInfo *lineinfos[2];
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100
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101 /* lineinfo will == lineinfos[0] or lineinfos[1], depending on altscreen */
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102 VTermLineInfo *lineinfo;
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103 #define ROWWIDTH(state,row) ((state)->lineinfo[(row)].doublewidth ? ((state)->cols / 2) : (state)->cols)
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104 #define THISROWWIDTH(state) ROWWIDTH(state, (state)->pos.row)
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105
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106 // Mouse state
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107 int mouse_col, mouse_row;
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108 int mouse_buttons;
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109 int mouse_flags;
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110
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111 enum { MOUSE_X10, MOUSE_UTF8, MOUSE_SGR, MOUSE_RXVT } mouse_protocol;
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112
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113 // Last glyph output, for Unicode recombining purposes
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114 uint32_t *combine_chars;
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115 size_t combine_chars_size; // Number of ELEMENTS in the above
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116 int combine_width; // The width of the glyph above
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117 VTermPos combine_pos; // Position before movement
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118
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119 struct {
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120 unsigned int keypad:1;
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121 unsigned int cursor:1;
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122 unsigned int autowrap:1;
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123 unsigned int insert:1;
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124 unsigned int newline:1;
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125 unsigned int cursor_visible:1;
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126 unsigned int cursor_blink:1;
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127 unsigned int cursor_shape:2;
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128 unsigned int alt_screen:1;
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129 unsigned int origin:1;
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130 unsigned int screen:1;
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131 unsigned int leftrightmargin:1;
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132 unsigned int bracketpaste:1;
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133 unsigned int report_focus:1;
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134 unsigned int modify_other_keys:1;
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135 } mode;
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136
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137 VTermEncodingInstance encoding[4], encoding_utf8;
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138 int gl_set, gr_set, gsingle_set;
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139
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140 struct VTermPen pen;
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141
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142 VTermColor default_fg;
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143 VTermColor default_bg;
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144 VTermColor colors[16]; // Store the 8 ANSI and the 8 ANSI high-brights only
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145
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146 int fg_index;
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147 int bg_index;
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148 int bold_is_highbright;
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149
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150 unsigned int protected_cell : 1;
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151
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152 // Saved state under DEC mode 1048/1049
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153 struct {
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154 VTermPos pos;
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155 struct VTermPen pen;
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156
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157 struct {
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158 unsigned int cursor_visible:1;
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159 unsigned int cursor_blink:1;
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160 unsigned int cursor_shape:2;
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161 } mode;
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162 } saved;
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163
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164 /* Temporary state for DECRQSS parsing */
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165 union {
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166 char decrqss[4];
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167 } tmp;
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168 };
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169
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170 struct VTerm
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171 {
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172 VTermAllocatorFunctions *allocator;
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173 void *allocdata;
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174
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175 int rows;
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176 int cols;
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177
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178 struct {
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179 unsigned int utf8:1;
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180 unsigned int ctrl8bit:1;
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181 } mode;
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182
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183 struct {
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184 enum VTermParserState {
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185 NORMAL,
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186 CSI_LEADER,
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187 CSI_ARGS,
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188 CSI_INTERMED,
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189 OSC_COMMAND,
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190 DCS_COMMAND,
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191 // below here are the "string states"
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192 OSC,
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193 DCS,
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194 } state;
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195
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196 unsigned int in_esc : 1;
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197
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198 int intermedlen;
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199 char intermed[INTERMED_MAX];
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200
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201 union {
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202 struct {
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203 int leaderlen;
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204 char leader[CSI_LEADER_MAX];
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205
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206 int argi;
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207 long args[CSI_ARGS_MAX];
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208 } csi;
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209 struct {
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210 int command;
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211 } osc;
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212 struct {
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213 int commandlen;
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214 char command[CSI_LEADER_MAX];
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215 } dcs;
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216 } v;
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217
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218 const VTermParserCallbacks *callbacks;
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219 void *cbdata;
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220
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221 int string_initial;
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222 } parser;
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223
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224 // len == malloc()ed size; cur == number of valid bytes
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225
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226 VTermOutputCallback *outfunc;
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227 void *outdata;
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228
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229 char *outbuffer;
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230 size_t outbuffer_len;
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231 size_t outbuffer_cur;
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232
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233 char *tmpbuffer;
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234 size_t tmpbuffer_len;
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235
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236 VTermState *state;
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237 VTermScreen *screen;
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238
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239 int in_backspace;
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240 };
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241
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242 struct VTermEncoding {
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243 void (*init) (VTermEncoding *enc, void *data);
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244 void (*decode)(VTermEncoding *enc, void *data,
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245 uint32_t cp[], int *cpi, int cplen,
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246 const char bytes[], size_t *pos, size_t len);
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247 };
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248
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249 typedef enum {
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250 ENC_UTF8,
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251 ENC_SINGLE_94
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252 } VTermEncodingType;
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253
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254 void *vterm_allocator_malloc(VTerm *vt, size_t size);
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255 void vterm_allocator_free(VTerm *vt, void *ptr);
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256
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257 void vterm_push_output_bytes(VTerm *vt, const char *bytes, size_t len);
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258 void vterm_push_output_vsprintf(VTerm *vt, const char *format, va_list args);
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259 void vterm_push_output_sprintf(VTerm *vt, const char *format, ...);
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260 void vterm_push_output_sprintf_ctrl(VTerm *vt, unsigned char ctrl, const char *fmt, ...);
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261 void vterm_push_output_sprintf_dcs(VTerm *vt, const char *fmt, ...);
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262
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263 void vterm_state_free(VTermState *state);
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264
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265 void vterm_state_newpen(VTermState *state);
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266 void vterm_state_resetpen(VTermState *state);
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267 void vterm_state_setpen(VTermState *state, const long args[], int argcount);
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268 int vterm_state_getpen(VTermState *state, long args[], int argcount);
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269 void vterm_state_savepen(VTermState *state, int save);
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270
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271 enum {
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272 C1_SS3 = 0x8f,
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273 C1_DCS = 0x90,
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274 C1_CSI = 0x9b,
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275 C1_ST = 0x9c,
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276 C1_OSC = 0x9d,
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277 };
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278
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279 void vterm_state_push_output_sprintf_CSI(VTermState *vts, const char *format, ...);
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280
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281 void vterm_screen_free(VTermScreen *screen);
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282
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283 VTermEncoding *vterm_lookup_encoding(VTermEncodingType type, char designation);
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284
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285 int vterm_unicode_width(uint32_t codepoint);
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286 int vterm_unicode_is_combining(uint32_t codepoint);
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287 int vterm_unicode_is_ambiguous(uint32_t codepoint);
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288 int vterm_get_special_pty_type(void);
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289
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290 #if (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 500) \
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291 || defined(_ISOC99_SOURCE) || defined(_BSD_SOURCE)
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292 # undef VSNPRINTF
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293 # define VSNPRINTF vsnprintf
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294 # undef SNPRINTF
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295 #else
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296 # ifdef VSNPRINTF
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297 // Use a provided vsnprintf() function.
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298 int VSNPRINTF(char *str, size_t str_m, const char *fmt, va_list ap);
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299 # endif
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300 # ifdef SNPRINTF
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301 // Use a provided snprintf() function.
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302 int SNPRINTF(char *str, size_t str_m, const char *fmt, ...);
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303 # endif
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304 #endif
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305 #ifndef SNPRINTF
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306 # define SNPRINTF snprintf
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307 #endif
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308
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309
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310 #endif