annotate src/libvterm/include/vterm.h @ 11621:b8299e742f41 v8.0.0693

patch 8.0.0693: no terminal emulator support commit https://github.com/vim/vim/commit/e4f25e4a8db2c8a8a71a4ba2a68540b3ab341e42 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jul 7 11:54:15 2017 +0200 patch 8.0.0693: no terminal emulator support Problem: No terminal emulator support. Cannot properly run commands in the GUI. Cannot run a job interactively with an ssh connection. Solution: Very early implementation of the :terminal command. Includes libvterm converted to ANSI C. Many parts still missing.
author Christian Brabandt <cb@256bit.org>
date Fri, 07 Jul 2017 12:00:04 +0200
parents
children 7846efd291d7
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11621
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1 /*
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2 * NOTE: This is a MODIFIED version of libvterm, see the README file.
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3 */
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4 #ifndef __VTERM_H__
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5 #define __VTERM_H__
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6
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7 #ifdef __cplusplus
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8 extern "C" {
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9 #endif
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10
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11 #include <stdint.h>
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12 #include <stdlib.h>
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13 #include <stdbool.h>
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14
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15 #include "vterm_keycodes.h"
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16
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17 typedef struct VTerm VTerm;
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18 typedef struct VTermState VTermState;
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19 typedef struct VTermScreen VTermScreen;
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20
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21 /* Specifies a screen point. */
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22 typedef struct {
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23 int row;
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24 int col;
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25 } VTermPos;
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26
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27 /*
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28 * Some small utility functions; we can just keep these static here.
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29 */
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30
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31 /*
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32 * Order points by on-screen flow order:
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33 * Return < 0 if "a" is before "b"
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34 * Return 0 if "a" and "b" are equal
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35 * Return > 0 if "a" is after "b".
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36 */
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37 int vterm_pos_cmp(VTermPos a, VTermPos b);
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38
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39 #if defined(DEFINE_INLINES) || USE_INLINE
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40 INLINE int vterm_pos_cmp(VTermPos a, VTermPos b)
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41 {
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42 return (a.row == b.row) ? a.col - b.col : a.row - b.row;
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43 }
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44 #endif
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45
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46 /* Specifies a rectangular screen area. */
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47 typedef struct {
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48 int start_row;
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49 int end_row;
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50 int start_col;
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51 int end_col;
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52 } VTermRect;
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53
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54 /* Return true if the rect "r" contains the point "p". */
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55 int vterm_rect_contains(VTermRect r, VTermPos p);
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56
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57 #if defined(DEFINE_INLINES) || USE_INLINE
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58 INLINE int vterm_rect_contains(VTermRect r, VTermPos p)
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59 {
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60 return p.row >= r.start_row && p.row < r.end_row &&
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61 p.col >= r.start_col && p.col < r.end_col;
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62 }
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63 #endif
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64
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65 /* Move "rect" "row_delta" down and "col_delta" right.
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66 * Does not check boundaries. */
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67 void vterm_rect_move(VTermRect *rect, int row_delta, int col_delta);
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68
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69 #if defined(DEFINE_INLINES) || USE_INLINE
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70 INLINE void vterm_rect_move(VTermRect *rect, int row_delta, int col_delta)
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71 {
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72 rect->start_row += row_delta; rect->end_row += row_delta;
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73 rect->start_col += col_delta; rect->end_col += col_delta;
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74 }
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75 #endif
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76
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77 typedef struct {
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78 uint8_t red, green, blue;
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79 } VTermColor;
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80
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81 typedef enum {
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82 /* VTERM_VALUETYPE_NONE = 0 */
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83 VTERM_VALUETYPE_BOOL = 1,
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84 VTERM_VALUETYPE_INT,
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85 VTERM_VALUETYPE_STRING,
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86 VTERM_VALUETYPE_COLOR
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87 } VTermValueType;
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88
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89 typedef union {
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90 int boolean;
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91 int number;
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92 char *string;
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93 VTermColor color;
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94 } VTermValue;
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95
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96 typedef enum {
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97 /* VTERM_ATTR_NONE = 0 */
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98 VTERM_ATTR_BOLD = 1, /* bool: 1, 22 */
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99 VTERM_ATTR_UNDERLINE, /* number: 4, 21, 24 */
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100 VTERM_ATTR_ITALIC, /* bool: 3, 23 */
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101 VTERM_ATTR_BLINK, /* bool: 5, 25 */
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102 VTERM_ATTR_REVERSE, /* bool: 7, 27 */
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103 VTERM_ATTR_STRIKE, /* bool: 9, 29 */
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104 VTERM_ATTR_FONT, /* number: 10-19 */
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105 VTERM_ATTR_FOREGROUND, /* color: 30-39 90-97 */
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106 VTERM_ATTR_BACKGROUND /* color: 40-49 100-107 */
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107 } VTermAttr;
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108
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109 typedef enum {
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110 /* VTERM_PROP_NONE = 0 */
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111 VTERM_PROP_CURSORVISIBLE = 1, /* bool */
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112 VTERM_PROP_CURSORBLINK, /* bool */
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113 VTERM_PROP_ALTSCREEN, /* bool */
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114 VTERM_PROP_TITLE, /* string */
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115 VTERM_PROP_ICONNAME, /* string */
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116 VTERM_PROP_REVERSE, /* bool */
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117 VTERM_PROP_CURSORSHAPE, /* number */
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118 VTERM_PROP_MOUSE /* number */
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119 } VTermProp;
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120
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121 enum {
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122 VTERM_PROP_CURSORSHAPE_BLOCK = 1,
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123 VTERM_PROP_CURSORSHAPE_UNDERLINE,
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124 VTERM_PROP_CURSORSHAPE_BAR_LEFT
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125 };
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126
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127 enum {
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128 VTERM_PROP_MOUSE_NONE = 0,
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129 VTERM_PROP_MOUSE_CLICK,
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130 VTERM_PROP_MOUSE_DRAG,
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131 VTERM_PROP_MOUSE_MOVE
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132 };
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133
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134 typedef struct {
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135 const uint32_t *chars;
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136 int width;
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137 unsigned int protected_cell:1; /* DECSCA-protected against DECSEL/DECSED */
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138 unsigned int dwl:1; /* DECDWL or DECDHL double-width line */
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139 unsigned int dhl:2; /* DECDHL double-height line (1=top 2=bottom) */
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140 } VTermGlyphInfo;
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141
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142 typedef struct {
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143 unsigned int doublewidth:1; /* DECDWL or DECDHL line */
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144 unsigned int doubleheight:2; /* DECDHL line (1=top 2=bottom) */
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145 } VTermLineInfo;
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146
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147 typedef struct {
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148 /* libvterm relies on the allocated memory to be zeroed out before it is
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149 * returned by the allocator. */
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150 void *(*malloc)(size_t size, void *allocdata);
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151 void (*free)(void *ptr, void *allocdata);
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152 } VTermAllocatorFunctions;
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153
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154 /* Allocate and initialize a new terminal with default allocators. */
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155 VTerm *vterm_new(int rows, int cols);
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156
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157 /* Allocate and initialize a new terminal with specified allocators. */
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158 VTerm *vterm_new_with_allocator(int rows, int cols, VTermAllocatorFunctions *funcs, void *allocdata);
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159
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160 /* Free and cleanup a terminal and all its data. */
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161 void vterm_free(VTerm* vt);
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162
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163 void vterm_get_size(const VTerm *vt, int *rowsp, int *colsp);
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164 void vterm_set_size(VTerm *vt, int rows, int cols);
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165
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166 int vterm_get_utf8(const VTerm *vt);
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167 void vterm_set_utf8(VTerm *vt, int is_utf8);
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168
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169 size_t vterm_input_write(VTerm *vt, const char *bytes, size_t len);
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170
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171 size_t vterm_output_get_buffer_size(const VTerm *vt);
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172 size_t vterm_output_get_buffer_current(const VTerm *vt);
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173 size_t vterm_output_get_buffer_remaining(const VTerm *vt);
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174
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175 size_t vterm_output_read(VTerm *vt, char *buffer, size_t len);
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176
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177 void vterm_keyboard_unichar(VTerm *vt, uint32_t c, VTermModifier mod);
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178 void vterm_keyboard_key(VTerm *vt, VTermKey key, VTermModifier mod);
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179
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180 void vterm_keyboard_start_paste(VTerm *vt);
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181 void vterm_keyboard_end_paste(VTerm *vt);
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182
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183 void vterm_mouse_move(VTerm *vt, int row, int col, VTermModifier mod);
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184 void vterm_mouse_button(VTerm *vt, int button, bool pressed, VTermModifier mod);
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185
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186 /* ------------
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187 * Parser layer
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188 * ------------ */
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189
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190 /* Flag to indicate non-final subparameters in a single CSI parameter.
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191 * Consider
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192 * CSI 1;2:3:4;5a
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193 * 1 4 and 5 are final.
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194 * 2 and 3 are non-final and will have this bit set
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195 *
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196 * Don't confuse this with the final byte of the CSI escape; 'a' in this case.
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197 */
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198 #define CSI_ARG_FLAG_MORE (1<<31)
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199 #define CSI_ARG_MASK (~(1<<31))
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200
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201 #define CSI_ARG_HAS_MORE(a) ((a) & CSI_ARG_FLAG_MORE)
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202 #define CSI_ARG(a) ((a) & CSI_ARG_MASK)
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203
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204 /* Can't use -1 to indicate a missing argument; use this instead */
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205 #define CSI_ARG_MISSING ((1UL<<31)-1)
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206
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207 #define CSI_ARG_IS_MISSING(a) (CSI_ARG(a) == CSI_ARG_MISSING)
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208 #define CSI_ARG_OR(a,def) (CSI_ARG(a) == CSI_ARG_MISSING ? (def) : CSI_ARG(a))
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209 #define CSI_ARG_COUNT(a) (CSI_ARG(a) == CSI_ARG_MISSING || CSI_ARG(a) == 0 ? 1 : CSI_ARG(a))
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210
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211 typedef struct {
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212 int (*text)(const char *bytes, size_t len, void *user);
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213 int (*control)(unsigned char control, void *user);
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214 int (*escape)(const char *bytes, size_t len, void *user);
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215 int (*csi)(const char *leader, const long args[], int argcount, const char *intermed, char command, void *user);
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216 int (*osc)(const char *command, size_t cmdlen, void *user);
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217 int (*dcs)(const char *command, size_t cmdlen, void *user);
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218 int (*resize)(int rows, int cols, void *user);
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219 } VTermParserCallbacks;
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220
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221 void vterm_parser_set_callbacks(VTerm *vt, const VTermParserCallbacks *callbacks, void *user);
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222 void *vterm_parser_get_cbdata(VTerm *vt);
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223
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224 /* -----------
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225 * State layer
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226 * ----------- */
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227
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228 typedef struct {
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229 int (*putglyph)(VTermGlyphInfo *info, VTermPos pos, void *user);
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230 int (*movecursor)(VTermPos pos, VTermPos oldpos, int visible, void *user);
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231 int (*scrollrect)(VTermRect rect, int downward, int rightward, void *user);
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232 int (*moverect)(VTermRect dest, VTermRect src, void *user);
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233 int (*erase)(VTermRect rect, int selective, void *user);
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234 int (*initpen)(void *user);
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235 int (*setpenattr)(VTermAttr attr, VTermValue *val, void *user);
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236 int (*settermprop)(VTermProp prop, VTermValue *val, void *user);
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237 int (*bell)(void *user);
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238 int (*resize)(int rows, int cols, VTermPos *delta, void *user);
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239 int (*setlineinfo)(int row, const VTermLineInfo *newinfo, const VTermLineInfo *oldinfo, void *user);
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240 } VTermStateCallbacks;
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241
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242 VTermState *vterm_obtain_state(VTerm *vt);
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243
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244 void vterm_state_set_callbacks(VTermState *state, const VTermStateCallbacks *callbacks, void *user);
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245 void *vterm_state_get_cbdata(VTermState *state);
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246
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247 /* Only invokes control, csi, osc, dcs */
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248 void vterm_state_set_unrecognised_fallbacks(VTermState *state, const VTermParserCallbacks *fallbacks, void *user);
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249 void *vterm_state_get_unrecognised_fbdata(VTermState *state);
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250
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251 void vterm_state_reset(VTermState *state, int hard);
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252 void vterm_state_get_cursorpos(const VTermState *state, VTermPos *cursorpos);
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253 void vterm_state_get_default_colors(const VTermState *state, VTermColor *default_fg, VTermColor *default_bg);
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254 void vterm_state_get_palette_color(const VTermState *state, int index, VTermColor *col);
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255 void vterm_state_set_default_colors(VTermState *state, const VTermColor *default_fg, const VTermColor *default_bg);
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256 void vterm_state_set_palette_color(VTermState *state, int index, const VTermColor *col);
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257 void vterm_state_set_bold_highbright(VTermState *state, int bold_is_highbright);
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258 int vterm_state_get_penattr(const VTermState *state, VTermAttr attr, VTermValue *val);
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259 int vterm_state_set_termprop(VTermState *state, VTermProp prop, VTermValue *val);
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260 const VTermLineInfo *vterm_state_get_lineinfo(const VTermState *state, int row);
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261
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262 /* ------------
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263 * Screen layer
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264 * ------------ */
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265
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266 typedef struct {
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267 unsigned int bold : 1;
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268 unsigned int underline : 2;
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269 unsigned int italic : 1;
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270 unsigned int blink : 1;
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271 unsigned int reverse : 1;
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272 unsigned int strike : 1;
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273 unsigned int font : 4; /* 0 to 9 */
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274 unsigned int dwl : 1; /* On a DECDWL or DECDHL line */
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275 unsigned int dhl : 2; /* On a DECDHL line (1=top 2=bottom) */
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276 } VTermScreenCellAttrs;
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277
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278 typedef struct {
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279 #define VTERM_MAX_CHARS_PER_CELL 6
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280 uint32_t chars[VTERM_MAX_CHARS_PER_CELL];
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281 char width;
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282 VTermScreenCellAttrs attrs;
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283 VTermColor fg, bg;
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284 } VTermScreenCell;
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285
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286 /* All fields are optional, NULL when not used. */
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287 typedef struct {
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288 int (*damage)(VTermRect rect, void *user);
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289 int (*moverect)(VTermRect dest, VTermRect src, void *user);
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290 int (*movecursor)(VTermPos pos, VTermPos oldpos, int visible, void *user);
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291 int (*settermprop)(VTermProp prop, VTermValue *val, void *user);
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292 int (*bell)(void *user);
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293 int (*resize)(int rows, int cols, void *user);
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294 int (*sb_pushline)(int cols, const VTermScreenCell *cells, void *user);
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295 int (*sb_popline)(int cols, VTermScreenCell *cells, void *user);
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296 } VTermScreenCallbacks;
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297
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298 VTermScreen *vterm_obtain_screen(VTerm *vt);
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299
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300 /*
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301 * Install screen callbacks. These are invoked when the screen contents is
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302 * changed. "user" is passed into to the callback.
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303 */
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304 void vterm_screen_set_callbacks(VTermScreen *screen, const VTermScreenCallbacks *callbacks, void *user);
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305 void *vterm_screen_get_cbdata(VTermScreen *screen);
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306
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307 /* Only invokes control, csi, osc, dcs */
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308 void vterm_screen_set_unrecognised_fallbacks(VTermScreen *screen, const VTermParserCallbacks *fallbacks, void *user);
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309 void *vterm_screen_get_unrecognised_fbdata(VTermScreen *screen);
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310
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311 void vterm_screen_enable_altscreen(VTermScreen *screen, int altscreen);
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312
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313 typedef enum {
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314 VTERM_DAMAGE_CELL, /* every cell */
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315 VTERM_DAMAGE_ROW, /* entire rows */
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316 VTERM_DAMAGE_SCREEN, /* entire screen */
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317 VTERM_DAMAGE_SCROLL /* entire screen + scrollrect */
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318 } VTermDamageSize;
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319
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320 void vterm_screen_flush_damage(VTermScreen *screen);
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321 void vterm_screen_set_damage_merge(VTermScreen *screen, VTermDamageSize size);
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322
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323 void vterm_screen_reset(VTermScreen *screen, int hard);
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324
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325 /* Neither of these functions NUL-terminate the buffer */
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326 size_t vterm_screen_get_chars(const VTermScreen *screen, uint32_t *chars, size_t len, const VTermRect rect);
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327 size_t vterm_screen_get_text(const VTermScreen *screen, char *str, size_t len, const VTermRect rect);
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328
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329 typedef enum {
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330 VTERM_ATTR_BOLD_MASK = 1 << 0,
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331 VTERM_ATTR_UNDERLINE_MASK = 1 << 1,
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332 VTERM_ATTR_ITALIC_MASK = 1 << 2,
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333 VTERM_ATTR_BLINK_MASK = 1 << 3,
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334 VTERM_ATTR_REVERSE_MASK = 1 << 4,
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335 VTERM_ATTR_STRIKE_MASK = 1 << 5,
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336 VTERM_ATTR_FONT_MASK = 1 << 6,
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337 VTERM_ATTR_FOREGROUND_MASK = 1 << 7,
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338 VTERM_ATTR_BACKGROUND_MASK = 1 << 8
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339 } VTermAttrMask;
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340
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341 int vterm_screen_get_attrs_extent(const VTermScreen *screen, VTermRect *extent, VTermPos pos, VTermAttrMask attrs);
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342
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343 int vterm_screen_get_cell(const VTermScreen *screen, VTermPos pos, VTermScreenCell *cell);
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344
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345 int vterm_screen_is_eol(const VTermScreen *screen, VTermPos pos);
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346
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347 /* ---------
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348 * Utilities
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349 * --------- */
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350
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351 VTermValueType vterm_get_attr_type(VTermAttr attr);
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352 VTermValueType vterm_get_prop_type(VTermProp prop);
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353
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354 void vterm_scroll_rect(VTermRect rect,
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355 int downward,
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356 int rightward,
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357 int (*moverect)(VTermRect src, VTermRect dest, void *user),
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358 int (*eraserect)(VTermRect rect, int selective, void *user),
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359 void *user);
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360
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361 void vterm_copy_cells(VTermRect dest,
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362 VTermRect src,
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363 void (*copycell)(VTermPos dest, VTermPos src, void *user),
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364 void *user);
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365
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366 #ifdef __cplusplus
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367 }
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368 #endif
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369
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370 #endif