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gramscii.h - gramscii - A simple editor for ASCII box-and-arrow charts |
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README |
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LICENSE |
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--- |
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gramscii.h (3758B) |
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--- |
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1 #ifndef __GRAMSCII_H__ |
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2 #define __GRAMSCII_H__ |
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3 |
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4 #define _POSIX_C_SOURCE 200112L |
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5 |
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6 #include <stdio.h> |
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7 #include <termios.h> |
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8 #include <unistd.h> |
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9 |
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10 |
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11 |
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12 /** constants **/ |
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13 |
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14 /* modes */ |
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15 #define MOVE 0x00 |
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16 #define BOX 0x01 |
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17 #define ARROW 0x02 |
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18 #define TEXT 0x04 |
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19 #define DEL 0x08 |
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20 #define VIS 0x10 |
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21 #define PAR 0x20 |
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22 #define REM 0x40 |
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23 #define TRP 0x80 |
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24 /**/ |
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25 |
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26 /* directions */ |
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27 #define DIR_N 0x00 |
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28 #define DIR_R 0x01 |
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29 #define DIR_U 0x02 |
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30 #define DIR_D 0x04 |
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31 #define DIR_L 0x08 |
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32 |
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33 #define DIR_HOR (DIR_R | DIR_L) |
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34 #define DIR_VER (DIR_D | DIR_U) |
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35 /**/ |
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36 |
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37 /** box style **/ |
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38 /* rectangular box */ |
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39 #define BOX_RECT 0x00 |
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40 /* parallelograms */ |
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41 #define BOX_PAR 0x10 |
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42 /* parallelogram (leaning right) */ |
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43 #define BOX_PARR 0x11 |
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44 /* parallelogram (leaning left) */ |
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45 #define BOX_PARL 0x12 |
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46 /* trapezium */ |
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47 #define BOX_TRAP 0x20 |
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48 #define BOX_TRAP_U 0x24 |
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49 #define BOX_TRAP_D 0x28 |
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50 #define BOX_TRAP_R 0x21 |
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51 #define BOX_TRAP_C 0x22 |
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52 #define BOX_TRAP_L 0x23 |
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53 #define BOX_TRAP_UR 0x25 |
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54 #define BOX_TRAP_UC 0x26 |
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55 #define BOX_TRAP_UL 0x27 |
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56 #define BOX_TRAP_DL 0x29 |
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57 #define BOX_TRAP_DC 0x2a |
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58 #define BOX_TRAP_DR 0x2b |
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59 #define STYLE_IS(x, y) (((x) & (y) ) == y) |
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60 /**/ |
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61 |
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62 #define NOFIX 0x0 |
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63 #define FIX 0x1 |
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64 |
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65 /* markers */ |
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66 #define BG ' ' |
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67 #define PTR '+' |
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68 #define UND '_' |
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69 #define ARR_L '<' |
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70 #define ARR_R '>' |
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71 #define ARR_U '^' |
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72 #define ARR_D 'v' |
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73 /**/ |
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74 |
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75 /* global positions */ |
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76 #define HOME 0x01 |
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77 #define END 0x02 |
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78 #define MIDDLE 0x04 |
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79 /**/ |
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80 |
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81 /* video modes */ |
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82 #define VIDEO_NRM 0 |
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83 #define VIDEO_REV 7 |
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84 /**/ |
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85 |
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86 /* undo buffer elem types */ |
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87 #define PRV_STATE 0x01 |
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88 #define NEW_STATE 0x02 |
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89 /**/ |
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90 |
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91 /* file types */ |
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92 #define FFILE 0x01 |
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93 #define FPIPE 0x02 |
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94 |
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95 /** types **/ |
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96 |
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97 typedef struct{ |
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98 int sz;/* allocated size */ |
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99 int n;/* line number */ |
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100 int lst;/* last visible char (before the first \0) */ |
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101 char *s; |
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102 } line_t; |
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103 |
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104 typedef struct{ |
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105 int sz;/* allocated size */ |
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106 int num;/* number of lines stored */ |
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107 line_t *l; |
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108 } lineset_t; |
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109 |
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110 typedef struct{ |
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111 int x; |
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112 int y; |
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113 } pos_t; |
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114 |
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115 |
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116 /** MACROS **/ |
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117 |
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118 #define MIN(x,y) (x) < (y) ? (x) : (y) |
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119 #define MAX(x,y) (x) > (y) ? (x) : (y) |
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120 |
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121 #define progr_x(d) ((d) == DIR_L ? -1 : (d) == DIR_R ? 1 : 0) |
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122 #define progr_y(d) ((d) == DIR_U ? -1 : (d) == DIR_D ? 1 : 0) |
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123 |
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124 |
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125 /** screen-related functions **/ |
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126 void reset_styles(); |
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127 void redraw(); |
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128 int move_around(char c, FILE *fc, char global); |
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129 void check_bound(int *x, int *y); |
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130 void status_bar(); |
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131 void show_cursor(); |
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132 void set_cur(char c); |
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133 void update_current(); |
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134 void set_xy(int _x, int _y, char c); |
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135 void draw_xy(int x, int y, char c); |
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136 char get_mark(char dir); |
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137 void set_video(int v); |
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138 char get_key(FILE *fc, char *msg); |
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139 void get_string(FILE *fc, char *msg, char *s, int sz); |
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140 void erase_box(int x1, int y1, char c); |
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141 int is_yes(char c); |
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142 void init_screen(); |
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143 void erase_line(int i); |
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144 void erase_screen(); |
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145 void go_to(int where); |
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146 void crop_to_nonblank(); |
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147 void crop_to_rect(); |
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148 void erase_blank_lines(int y1, int y2); |
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149 int _isblank(int c); |
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150 void mark_pos(FILE *fc); |
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151 /**/ |
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152 |
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153 /** drawing-related functions **/ |
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154 int change_style(char c); |
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155 void get_text(FILE *fc); |
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156 void get_box(FILE *fc, char st); |
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157 void get_arrow(FILE *fc); |
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158 void erase(FILE *fc); |
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159 void visual_box(FILE *fc); |
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160 void paste(); |
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161 void undo_change(); |
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162 void redo_change(); |
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163 void get_comment(FILE *fc); |
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164 /**/ |
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165 |
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166 /** file-related functions **/ |
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167 void write_file(FILE *fc); |
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168 void check_modified(FILE *fc); |
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169 void load_file(FILE *fc); |
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170 void new_file(FILE *fc); |
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171 void read_file_at(FILE *fc, int xl, int yl); |
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172 /**/ |
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173 |
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174 /** line-related functions **/ |
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175 void dump_lines(lineset_t ls, FILE *f); |
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176 void alloc_line(line_t *l); |
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177 void ensure_line_length(line_t *l, int len); |
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178 void ensure_num_lines(lineset_t *ls, int n); |
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179 void yank_region(int x1, int y1, int x2, int y2); |
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180 void paste_region(int x1, int y1); |
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181 void copy_lines_to_ring(int y1, int y2, int which); |
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182 void invalidate_undo(); |
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183 /**/ |
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184 |
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185 void cleanup(int); |
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186 |
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187 #endif |
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