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annotate src/libvterm/src/vterm_internal.h @ 20518:a4652d7ec99f v8.2.0813

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patch 8.2.0813: libvterm code is slightly different from upstream Commit: https://github.com/vim/vim/commit/591cec8366e87a172495c362477cbf5de8d399f0 Author: Bram Moolenaar <Bram@vim.org> Date: Fri May 22 22:06:06 2020 +0200 patch 8.2.0813: libvterm code is slightly different from upstream Problem: libvterm code is slightly different from upstream. Solution: Use upstream text to avoid future merge problems. Mainly comment style changes.
author Bram Moolenaar <Bram@vim.org>
date Fri, 22 May 2020 22:15:04 +0200
parents 03826c672315
children f93337ae0612
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 #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 conceal:1;
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57 unsigned int strike:1;
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58 unsigned int font:4; /* To store 0-9 */
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59 };
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60
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61 struct VTermState
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62 {
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63 VTerm *vt;
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64
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65 const VTermStateCallbacks *callbacks;
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66 void *cbdata;
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67
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68 const VTermStateFallbacks *fallbacks;
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69 void *fbdata;
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70
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71 int rows;
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72 int cols;
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73
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74 /* Current cursor position */
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75 VTermPos pos;
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76
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77 int at_phantom; /* True if we're on the "81st" phantom column to defer a wraparound */
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78
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79 int scrollregion_top;
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80 int scrollregion_bottom; /* -1 means unbounded */
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81 #define SCROLLREGION_BOTTOM(state) ((state)->scrollregion_bottom > -1 ? (state)->scrollregion_bottom : (state)->rows)
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82 int scrollregion_left;
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83 #define SCROLLREGION_LEFT(state) ((state)->mode.leftrightmargin ? (state)->scrollregion_left : 0)
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84 int scrollregion_right; /* -1 means unbounded */
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85 #define SCROLLREGION_RIGHT(state) ((state)->mode.leftrightmargin && (state)->scrollregion_right > -1 ? (state)->scrollregion_right : (state)->cols)
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86
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87 /* Bitvector of tab stops */
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88 unsigned char *tabstops;
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89
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90 /* Primary and Altscreen; lineinfos[1] is lazily allocated as needed */
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91 VTermLineInfo *lineinfos[2];
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92
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93 /* lineinfo will == lineinfos[0] or lineinfos[1], depending on altscreen */
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94 VTermLineInfo *lineinfo;
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95 #define ROWWIDTH(state,row) ((state)->lineinfo[(row)].doublewidth ? ((state)->cols / 2) : (state)->cols)
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96 #define THISROWWIDTH(state) ROWWIDTH(state, (state)->pos.row)
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98 /* Mouse state */
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99 int mouse_col, mouse_row;
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100 int mouse_buttons;
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101 int mouse_flags;
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102
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103 enum { MOUSE_X10, MOUSE_UTF8, MOUSE_SGR, MOUSE_RXVT } mouse_protocol;
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104
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105 /* Last glyph output, for Unicode recombining purposes */
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106 uint32_t *combine_chars;
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107 size_t combine_chars_size; // Number of ELEMENTS in the above
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108 int combine_width; // The width of the glyph above
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109 VTermPos combine_pos; // Position before movement
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110
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111 struct {
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112 unsigned int keypad:1;
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113 unsigned int cursor:1;
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114 unsigned int autowrap:1;
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115 unsigned int insert:1;
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116 unsigned int newline:1;
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117 unsigned int cursor_visible:1;
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118 unsigned int cursor_blink:1;
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119 unsigned int cursor_shape:2;
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120 unsigned int alt_screen:1;
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121 unsigned int origin:1;
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122 unsigned int screen:1;
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123 unsigned int leftrightmargin:1;
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124 unsigned int bracketpaste:1;
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125 unsigned int report_focus:1;
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126 unsigned int modify_other_keys: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 bold_is_highbright;
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139
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140 unsigned int protected_cell : 1;
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141
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142 /* Saved state under DEC mode 1048/1049 */
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143 struct {
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144 VTermPos pos;
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145 struct VTermPen pen;
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146
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147 struct {
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148 unsigned int cursor_visible:1;
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149 unsigned int cursor_blink:1;
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150 unsigned int cursor_shape:2;
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151 } mode;
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152 } saved;
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153
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154 /* Temporary state for DECRQSS parsing */
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155 union {
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156 char decrqss[4];
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157 } tmp;
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158 };
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159
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160 struct VTerm
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161 {
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162 VTermAllocatorFunctions *allocator;
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163 void *allocdata;
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164
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165 int rows;
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166 int cols;
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167
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168 struct {
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169 unsigned int utf8:1;
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170 unsigned int ctrl8bit:1;
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171 } mode;
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172
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173 struct {
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174 enum VTermParserState {
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175 NORMAL,
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176 CSI_LEADER,
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177 CSI_ARGS,
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178 CSI_INTERMED,
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179 DCS_COMMAND,
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180 /* below here are the "string states" */
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181 OSC_COMMAND,
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182 OSC,
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183 DCS,
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184 } state;
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185
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186 unsigned int in_esc : 1;
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187
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188 int intermedlen;
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189 char intermed[INTERMED_MAX];
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190
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191 union {
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192 struct {
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193 int leaderlen;
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194 char leader[CSI_LEADER_MAX];
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195
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196 int argi;
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197 long args[CSI_ARGS_MAX];
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198 } csi;
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199 struct {
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200 int command;
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201 } osc;
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202 struct {
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203 int commandlen;
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204 char command[CSI_LEADER_MAX];
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205 } dcs;
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206 } v;
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207
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208 const VTermParserCallbacks *callbacks;
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209 void *cbdata;
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210
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211 int string_initial;
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212 } parser;
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213
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214 /* len == malloc()ed size; cur == number of valid bytes */
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215
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216 VTermOutputCallback *outfunc;
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217 void *outdata;
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218
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219 char *outbuffer;
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220 size_t outbuffer_len;
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221 size_t outbuffer_cur;
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222
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223 char *tmpbuffer;
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224 size_t tmpbuffer_len;
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225
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226 VTermState *state;
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227 VTermScreen *screen;
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228
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229 int in_backspace;
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230 };
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231
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232 struct VTermEncoding {
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233 void (*init) (VTermEncoding *enc, void *data);
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234 void (*decode)(VTermEncoding *enc, void *data,
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235 uint32_t cp[], int *cpi, int cplen,
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236 const char bytes[], size_t *pos, size_t len);
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237 };
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238
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239 typedef enum {
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240 ENC_UTF8,
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241 ENC_SINGLE_94
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242 } VTermEncodingType;
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243
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244 void *vterm_allocator_malloc(VTerm *vt, size_t size);
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245 void vterm_allocator_free(VTerm *vt, void *ptr);
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246
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247 void vterm_push_output_bytes(VTerm *vt, const char *bytes, size_t len);
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248 void vterm_push_output_vsprintf(VTerm *vt, const char *format, va_list args);
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249 void vterm_push_output_sprintf(VTerm *vt, const char *format, ...);
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250 void vterm_push_output_sprintf_ctrl(VTerm *vt, unsigned char ctrl, const char *fmt, ...);
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251 void vterm_push_output_sprintf_dcs(VTerm *vt, const char *fmt, ...);
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252
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253 void vterm_state_free(VTermState *state);
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254
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255 void vterm_state_newpen(VTermState *state);
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256 void vterm_state_resetpen(VTermState *state);
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257 void vterm_state_setpen(VTermState *state, const long args[], int argcount);
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258 int vterm_state_getpen(VTermState *state, long args[], int argcount);
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259 void vterm_state_savepen(VTermState *state, int save);
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260
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diff changeset
261 enum {
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diff changeset
262 C1_SS3 = 0x8f,
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diff changeset
263 C1_DCS = 0x90,
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diff changeset
264 C1_CSI = 0x9b,
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diff changeset
265 C1_ST = 0x9c,
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diff changeset
266 C1_OSC = 0x9d,
11621
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267 };
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268
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diff changeset
269 void vterm_state_push_output_sprintf_CSI(VTermState *vts, const char *format, ...);
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diff changeset
270
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271 void vterm_screen_free(VTermScreen *screen);
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272
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273 VTermEncoding *vterm_lookup_encoding(VTermEncodingType type, char designation);
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274
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275 int vterm_unicode_width(uint32_t codepoint);
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276 int vterm_unicode_is_combining(uint32_t codepoint);
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277 int vterm_unicode_is_ambiguous(uint32_t codepoint);
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278 int vterm_get_special_pty_type(void);
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279
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280 #if (defined(_XOPEN_SOURCE) && _XOPEN_SOURCE >= 500) \
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281 || defined(_ISOC99_SOURCE) || defined(_BSD_SOURCE)
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282 # undef VSNPRINTF
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283 # define VSNPRINTF vsnprintf
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284 # undef SNPRINTF
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285 #else
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286 # ifdef VSNPRINTF
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287 // Use a provided vsnprintf() function.
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288 int VSNPRINTF(char *str, size_t str_m, const char *fmt, va_list ap);
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289 # endif
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290 # ifdef SNPRINTF
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291 // Use a provided snprintf() function.
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292 int SNPRINTF(char *str, size_t str_m, const char *fmt, ...);
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293 # endif
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294 #endif
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295 #ifndef SNPRINTF
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296 # define SNPRINTF snprintf
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297 #endif
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298
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299
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300 #endif