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annotate src/libvterm/src/vterm_internal.h @ 17777:811a12a78164 v8.1.1885

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patch 8.1.1885: comments in libvterm are inconsistent commit https://github.com/vim/vim/commit/db1085a5630ffdaa2e9f342c06cc739ebdf1a99a Author: Bram Moolenaar <Bram@vim.org> Date: Sun Aug 18 20:41:38 2019 +0200 patch 8.1.1885: comments in libvterm are inconsistent Problem: Comments in libvterm are inconsistent. Solution: Use // comments. Als update the table of combining characters.
author Bram Moolenaar <Bram@vim.org>
date Sun, 18 Aug 2019 20:45:04 +0200
parents 2449b6ce1456
children 8b4f9be5db73
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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 typedef struct VTermEncoding VTermEncoding;
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36
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37 typedef struct {
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38 VTermEncoding *enc;
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39
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40 // This size should be increased if required by other stateful encodings
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41 char data[4*sizeof(uint32_t)];
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42 } VTermEncodingInstance;
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43
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44 struct VTermPen
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45 {
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46 VTermColor fg;
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47 VTermColor bg;
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48 unsigned int bold:1;
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49 unsigned int underline:2;
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50 unsigned int italic:1;
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51 unsigned int blink:1;
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52 unsigned int reverse:1;
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53 unsigned int strike:1;
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54 unsigned int font:4; // To store 0-9
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55 };
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56
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57 int vterm_color_equal(VTermColor a, VTermColor b);
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58
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59 #if defined(DEFINE_INLINES) || USE_INLINE
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60 INLINE int vterm_color_equal(VTermColor a, VTermColor b)
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61 {
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62 return a.red == b.red && a.green == b.green && a.blue == b.blue;
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63 }
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64 #endif
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65
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66 struct VTermState
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67 {
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68 VTerm *vt;
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69
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70 const VTermStateCallbacks *callbacks;
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71 void *cbdata;
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72
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73 const VTermParserCallbacks *fallbacks;
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74 void *fbdata;
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75
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76 int rows;
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77 int cols;
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78
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79 // Current cursor position
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80 VTermPos pos;
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81
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82 int at_phantom; // True if we're on the "81st" phantom column to defer a wraparound
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83
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84 int scrollregion_top;
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85 int scrollregion_bottom; // -1 means unbounded
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86 #define SCROLLREGION_BOTTOM(state) ((state)->scrollregion_bottom > -1 ? (state)->scrollregion_bottom : (state)->rows)
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87 int scrollregion_left;
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88 #define SCROLLREGION_LEFT(state) ((state)->mode.leftrightmargin ? (state)->scrollregion_left : 0)
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89 int scrollregion_right; // -1 means unbounded
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90 #define SCROLLREGION_RIGHT(state) ((state)->mode.leftrightmargin && (state)->scrollregion_right > -1 ? (state)->scrollregion_right : (state)->cols)
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91
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92 // Bitvector of tab stops
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93 unsigned char *tabstops;
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94
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95 VTermLineInfo *lineinfo;
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96 #define ROWWIDTH(state,row) ((state)->lineinfo[(row)].doublewidth ? ((state)->cols / 2) : (state)->cols)
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97 #define THISROWWIDTH(state) ROWWIDTH(state, (state)->pos.row)
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98
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99 // Mouse state
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100 int mouse_col, mouse_row;
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101 int mouse_buttons;
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102 int mouse_flags;
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103
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104 enum { MOUSE_X10, MOUSE_UTF8, MOUSE_SGR, MOUSE_RXVT } mouse_protocol;
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105
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106 // Last glyph output, for Unicode recombining purposes
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107 uint32_t *combine_chars;
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108 size_t combine_chars_size; // Number of ELEMENTS in the above
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109 int combine_width; // The width of the glyph above
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110 VTermPos combine_pos; // Position before movement
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111
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112 struct {
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113 unsigned int keypad:1;
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114 unsigned int cursor:1;
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115 unsigned int autowrap:1;
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116 unsigned int insert:1;
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117 unsigned int newline:1;
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118 unsigned int cursor_visible:1;
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119 unsigned int cursor_blink:1;
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120 unsigned int cursor_shape:2;
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121 unsigned int alt_screen:1;
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122 unsigned int origin:1;
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123 unsigned int screen:1;
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124 unsigned int leftrightmargin:1;
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125 unsigned int bracketpaste:1;
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126 unsigned int report_focus:1;
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127 } mode;
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128
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129 VTermEncodingInstance encoding[4], encoding_utf8;
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130 int gl_set, gr_set, gsingle_set;
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131
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132 struct VTermPen pen;
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133
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134 VTermColor default_fg;
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135 VTermColor default_bg;
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136 VTermColor colors[16]; // Store the 8 ANSI and the 8 ANSI high-brights only
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137
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138 int fg_index;
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139 int bg_index;
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140 int bold_is_highbright;
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141
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142 unsigned int protected_cell : 1;
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143
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144 // Saved state under DEC mode 1048/1049
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145 struct {
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146 VTermPos pos;
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147 struct VTermPen pen;
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148
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149 struct {
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150 unsigned int cursor_visible:1;
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151 unsigned int cursor_blink:1;
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152 unsigned int cursor_shape:2;
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153 } mode;
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154 } saved;
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155 };
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156
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157 typedef enum {
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158 VTERM_PARSER_OSC,
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159 VTERM_PARSER_DCS,
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160
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161 VTERM_N_PARSER_TYPES
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162 } VTermParserStringType;
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163
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164 struct VTerm
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165 {
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166 VTermAllocatorFunctions *allocator;
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167 void *allocdata;
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168
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169 int rows;
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170 int cols;
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171
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172 struct {
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173 unsigned int utf8:1;
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174 unsigned int ctrl8bit:1;
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175 } mode;
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176
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177 struct {
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178 enum VTermParserState {
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179 NORMAL,
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180 CSI_LEADER,
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181 CSI_ARGS,
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182 CSI_INTERMED,
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183 ESC,
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184 // below here are the "string states"
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185 STRING,
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186 ESC_IN_STRING,
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187 } state;
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188
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189 int intermedlen;
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190 char intermed[INTERMED_MAX];
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191
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192 int csi_leaderlen;
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193 char csi_leader[CSI_LEADER_MAX];
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194
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195 int csi_argi;
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196 long csi_args[CSI_ARGS_MAX];
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197
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198 const VTermParserCallbacks *callbacks;
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199 void *cbdata;
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200
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201 VTermParserStringType stringtype;
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202 char *strbuffer;
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203 size_t strbuffer_len;
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204 size_t strbuffer_cur;
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205 } parser;
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206
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207 // len == malloc()ed size; cur == number of valid bytes
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208
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209 char *outbuffer;
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210 size_t outbuffer_len;
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211 size_t outbuffer_cur;
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212
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213 VTermState *state;
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214 VTermScreen *screen;
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215 };
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216
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217 struct VTermEncoding {
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218 void (*init) (VTermEncoding *enc, void *data);
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219 void (*decode)(VTermEncoding *enc, void *data,
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220 uint32_t cp[], int *cpi, int cplen,
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221 const char bytes[], size_t *pos, size_t len);
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222 };
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223
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224 typedef enum {
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225 ENC_UTF8,
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226 ENC_SINGLE_94
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227 } VTermEncodingType;
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228
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229 void *vterm_allocator_malloc(VTerm *vt, size_t size);
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230 void vterm_allocator_free(VTerm *vt, void *ptr);
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231
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232 void vterm_push_output_bytes(VTerm *vt, const char *bytes, size_t len);
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233 void vterm_push_output_vsprintf(VTerm *vt, const char *format, va_list args);
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234 void vterm_push_output_sprintf(VTerm *vt, const char *format, ...);
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235 void vterm_push_output_sprintf_ctrl(VTerm *vt, unsigned char ctrl, const char *fmt, ...);
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236 void vterm_push_output_sprintf_dcs(VTerm *vt, const char *fmt, ...);
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237
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238 void vterm_state_free(VTermState *state);
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239
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240 void vterm_state_newpen(VTermState *state);
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241 void vterm_state_resetpen(VTermState *state);
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242 void vterm_state_setpen(VTermState *state, const long args[], int argcount);
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243 int vterm_state_getpen(VTermState *state, long args[], int argcount);
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244 void vterm_state_savepen(VTermState *state, int save);
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245
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246 enum {
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247 C1_SS3 = 0x8f,
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248 C1_DCS = 0x90,
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249 C1_CSI = 0x9b,
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250 C1_ST = 0x9c,
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251 C1_OSC = 0x9d,
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252 };
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253
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254 void vterm_state_push_output_sprintf_CSI(VTermState *vts, const char *format, ...);
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255
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256 void vterm_screen_free(VTermScreen *screen);
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257
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258 VTermEncoding *vterm_lookup_encoding(VTermEncodingType type, char designation);
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259
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260 int vterm_unicode_width(uint32_t codepoint);
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261 int vterm_unicode_is_combining(uint32_t codepoint);
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262
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263 #endif