1 | /* |
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2 | * libcucul Canvas for ultrafast compositing of Unicode letters |
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3 | * Copyright (c) 2002-2006 Sam Hocevar <sam@zoy.org> |
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4 | * 2006 Jean-Yves Lamoureux <jylam@lnxscene.org> |
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5 | * All Rights Reserved |
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6 | * |
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7 | * $Id: export.c 1239 2006-10-26 09:24:29Z sam $ |
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8 | * |
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9 | * This library is free software; you can redistribute it and/or |
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10 | * modify it under the terms of the Do What The Fuck You Want To |
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11 | * Public License, Version 2, as published by Sam Hocevar. See |
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12 | * http://sam.zoy.org/wtfpl/COPYING for more details. |
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13 | */ |
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14 | |
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15 | /* |
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16 | * This file contains various export functions |
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17 | */ |
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18 | |
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19 | #include "config.h" |
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20 | #include "common.h" |
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21 | |
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22 | #if !defined(__KERNEL__) |
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23 | # if defined(HAVE_ERRNO_H) |
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24 | # include <errno.h> |
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25 | # endif |
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26 | # include <stdlib.h> |
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27 | # include <stdio.h> |
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28 | # include <string.h> |
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29 | #endif |
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30 | |
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31 | #include "cucul.h" |
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32 | #include "cucul_internals.h" |
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33 | |
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34 | static int export_caca(cucul_canvas_t *, cucul_buffer_t *); |
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35 | static int export_ansi(cucul_canvas_t *, cucul_buffer_t *); |
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36 | static int export_utf8(cucul_canvas_t *, cucul_buffer_t *); |
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37 | static int export_html(cucul_canvas_t *, cucul_buffer_t *); |
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38 | static int export_html3(cucul_canvas_t *, cucul_buffer_t *); |
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39 | static int export_irc(cucul_canvas_t *, cucul_buffer_t *); |
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40 | static int export_ps(cucul_canvas_t *, cucul_buffer_t *); |
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41 | static int export_svg(cucul_canvas_t *, cucul_buffer_t *); |
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42 | static int export_tga(cucul_canvas_t *, cucul_buffer_t *); |
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43 | |
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44 | /** \brief Export a canvas into a foreign format. |
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45 | * |
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46 | * This function exports a libcucul canvas into various foreign formats such |
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47 | * as ANSI art, HTML, IRC colours, etc. One should use cucul_get_buffer_data() |
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48 | * and cucul_get_buffer_size() to access the buffer contents. The allocated |
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49 | * data is valid until cucul_free_buffer() is called. |
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50 | * |
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51 | * Valid values for \c format are: |
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52 | * - \c "caca": export native libcaca files. |
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53 | * - \c "ansi": export ANSI art (CP437 charset with ANSI colour codes). |
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54 | * - \c "html": export an HTML page with CSS information. |
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55 | * - \c "html3": export an HTML table that should be compatible with |
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56 | * most navigators, including textmode ones. |
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57 | * - \c "irc": export UTF-8 text with mIRC colour codes. |
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58 | * - \c "ps": export a PostScript document. |
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59 | * - \c "svg": export an SVG vector image. |
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60 | * - \c "tga": export a TGA image. |
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61 | * |
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62 | * If an error occurs, NULL is returned and \b errno is set accordingly: |
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63 | * - \c EINVAL Unsupported format requested. |
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64 | * - \c ENOMEM Not enough memory to allocate output buffer. |
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65 | * |
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66 | * \param cv A libcucul canvas |
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67 | * \param format A string describing the requested output format. |
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68 | * \return A libcucul buffer, or NULL in case of error. |
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69 | */ |
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70 | cucul_buffer_t * cucul_export_canvas(cucul_canvas_t *cv, char const *format) |
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71 | { |
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72 | cucul_buffer_t *ex; |
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73 | int ret = -1; |
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74 | |
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75 | ex = malloc(sizeof(cucul_buffer_t)); |
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76 | if(!ex) |
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77 | { |
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78 | #if defined(HAVE_ERRNO_H) |
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79 | errno = ENOMEM; |
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80 | #endif |
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81 | return NULL; |
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82 | } |
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83 | |
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84 | ex->size = 0; |
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85 | ex->data = NULL; |
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86 | ex->user_data = 0; |
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87 | |
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88 | if(!strcasecmp("caca", format)) |
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89 | ret = export_caca(cv, ex); |
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90 | else if(!strcasecmp("ansi", format)) |
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91 | ret = export_ansi(cv, ex); |
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92 | else if(!strcasecmp("utf8", format)) |
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93 | ret = export_utf8(cv, ex); |
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94 | else if(!strcasecmp("html", format)) |
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95 | ret = export_html(cv, ex); |
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96 | else if(!strcasecmp("html3", format)) |
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97 | ret = export_html3(cv, ex); |
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98 | else if(!strcasecmp("irc", format)) |
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99 | ret = export_irc(cv, ex); |
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100 | else if(!strcasecmp("ps", format)) |
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101 | ret = export_ps(cv, ex); |
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102 | else if(!strcasecmp("svg", format)) |
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103 | ret = export_svg(cv, ex); |
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104 | else if(!strcasecmp("tga", format)) |
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105 | ret = export_tga(cv, ex); |
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106 | |
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107 | if(ret < 0) |
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108 | { |
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109 | free(ex); |
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110 | #if defined(HAVE_ERRNO_H) |
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111 | errno = EINVAL; |
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112 | #endif |
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113 | return NULL; |
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114 | } |
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115 | |
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116 | return ex; |
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117 | } |
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118 | |
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119 | /** \brief Get available export formats |
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120 | * |
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121 | * Return a list of available export formats. The list is a NULL-terminated |
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122 | * array of strings, interleaving a string containing the internal value for |
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123 | * the export format, to be used with cucul_export_canvas(), and a string |
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124 | * containing the natural language description for that export format. |
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125 | * |
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126 | * This function never fails. |
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127 | * |
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128 | * \return An array of strings. |
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129 | */ |
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130 | char const * const * cucul_get_export_list(void) |
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131 | { |
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132 | static char const * const list[] = |
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133 | { |
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134 | "caca", "native libcaca format", |
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135 | "ansi", "ANSI", |
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136 | "utf8", "UTF-8 with ANSI escape codes", |
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137 | "html", "HTML", |
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138 | "html3", "backwards-compatible HTML", |
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139 | "irc", "IRC with mIRC colours", |
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140 | "ps", "PostScript document", |
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141 | "svg", "SVG vector image", |
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142 | "tga", "TGA image", |
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143 | NULL, NULL |
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144 | }; |
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145 | |
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146 | return list; |
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147 | } |
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148 | |
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149 | /* |
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150 | * XXX: the following functions are local. |
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151 | */ |
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152 | |
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153 | /* Generate a native libcaca canvas file. */ |
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154 | static int export_caca(cucul_canvas_t *cv, cucul_buffer_t *ex) |
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155 | { |
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156 | uint32_t *attr = cv->attr; |
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157 | uint32_t *chars = cv->chars; |
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158 | char *cur; |
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159 | uint32_t w, h; |
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160 | unsigned int n; |
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161 | |
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162 | /* 16 bytes for the canvas, 8 bytes for each character cell. */ |
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163 | ex->size = 16 + 8 * cv->width * cv->height; |
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164 | ex->data = malloc(ex->size); |
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165 | |
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166 | cur = ex->data; |
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167 | |
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168 | w = cv->width; |
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169 | h = cv->height; |
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170 | |
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171 | cur += sprintf(cur, "CACACANV%c%c%c%c%c%c%c%c", |
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172 | (unsigned char)(w >> 24), (unsigned char)((w >> 16) & 0xff), |
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173 | (unsigned char)((w >> 8) & 0xff), (unsigned char)(w & 0xff), |
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174 | (unsigned char)(h >> 24), (unsigned char)((h >> 16) & 0xff), |
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175 | (unsigned char)((h >> 8) & 0xff), (unsigned char)(h & 0xff)); |
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176 | |
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177 | for(n = cv->height * cv->width; n--; ) |
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178 | { |
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179 | uint32_t ch = *chars++; |
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180 | uint32_t a = *attr++; |
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181 | |
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182 | *cur++ = ch >> 24; |
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183 | *cur++ = (ch >> 16) & 0xff; |
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184 | *cur++ = (ch >> 8) & 0xff; |
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185 | *cur++ = ch & 0xff; |
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186 | |
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187 | *cur++ = a >> 24; |
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188 | *cur++ = (a >> 16) & 0xff; |
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189 | *cur++ = (a >> 8) & 0xff; |
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190 | *cur++ = a & 0xff; |
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191 | } |
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192 | |
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193 | return 0; |
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194 | } |
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195 | |
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196 | /* Generate UTF-8 representation of current canvas. */ |
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197 | static int export_utf8(cucul_canvas_t *cv, cucul_buffer_t *ex) |
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198 | { |
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199 | static uint8_t const palette[] = |
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200 | { |
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201 | 0, 4, 2, 6, 1, 5, 3, 7, |
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202 | 8, 12, 10, 14, 9, 13, 11, 15 |
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203 | }; |
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204 | |
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205 | char *cur; |
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206 | unsigned int x, y; |
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207 | |
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208 | /* 23 bytes assumed for max length per pixel ('\e[5;1;3x;4y;9x;10ym' plus |
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209 | * 4 max bytes for a UTF-8 character). |
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210 | * Add height*9 to that (zeroes color at the end and jump to next line) */ |
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211 | ex->size = (cv->height * 9) + (cv->width * cv->height * 23); |
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212 | ex->data = malloc(ex->size); |
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213 | |
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214 | cur = ex->data; |
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215 | |
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216 | for(y = 0; y < cv->height; y++) |
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217 | { |
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218 | uint32_t *lineattr = cv->attr + y * cv->width; |
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219 | uint32_t *linechar = cv->chars + y * cv->width; |
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220 | |
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221 | uint8_t prevfg = 0x10; |
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222 | uint8_t prevbg = 0x10; |
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223 | |
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224 | for(x = 0; x < cv->width; x++) |
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225 | { |
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226 | uint32_t attr = lineattr[x]; |
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227 | uint32_t ch = linechar[x]; |
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228 | uint8_t fg, bg; |
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229 | |
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230 | if(ch == CUCUL_MAGIC_FULLWIDTH) |
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231 | continue; |
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232 | |
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233 | fg = ((attr & 0xffff) == CUCUL_COLOR_DEFAULT) ? |
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234 | 0x10 : palette[_cucul_argb32_to_ansi4fg(attr)]; |
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235 | bg = ((attr >> 16) == CUCUL_COLOR_TRANSPARENT) ? |
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236 | 0x10 : palette[_cucul_argb32_to_ansi4bg(attr)]; |
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237 | |
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238 | /* TODO: the [0 could be omitted in some cases */ |
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239 | if(fg != prevfg || bg != prevbg) |
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240 | { |
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241 | cur += sprintf(cur, "\033[0"); |
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242 | |
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243 | if(fg < 8) |
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244 | cur += sprintf(cur, ";3%d", fg); |
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245 | else if(fg < 16) |
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246 | cur += sprintf(cur, ";1;3%d;9%d", fg - 8, fg - 8); |
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247 | |
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248 | if(bg < 8) |
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249 | cur += sprintf(cur, ";4%d", bg); |
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250 | else if(bg < 16) |
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251 | cur += sprintf(cur, ";5;4%d;10%d", bg - 8, bg - 8); |
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252 | |
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253 | cur += sprintf(cur, "m"); |
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254 | } |
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255 | |
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256 | cur += cucul_utf32_to_utf8(cur, ch); |
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257 | |
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258 | prevfg = fg; |
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259 | prevbg = bg; |
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260 | } |
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261 | |
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262 | if(prevfg != 0x10 || prevbg != 0x10) |
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263 | cur += sprintf(cur, "\033[0m"); |
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264 | |
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265 | cur += sprintf(cur, "\n"); |
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266 | } |
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267 | |
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268 | /* Crop to really used size */ |
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269 | ex->size = (uintptr_t)(cur - ex->data); |
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270 | ex->data = realloc(ex->data, ex->size); |
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271 | |
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272 | return 0; |
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273 | } |
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274 | |
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275 | /* Generate ANSI representation of current canvas. */ |
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276 | static int export_ansi(cucul_canvas_t *cv, cucul_buffer_t *ex) |
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277 | { |
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278 | static uint8_t const palette[] = |
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279 | { |
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280 | 0, 4, 2, 6, 1, 5, 3, 7, |
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281 | 8, 12, 10, 14, 9, 13, 11, 15 |
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282 | }; |
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283 | |
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284 | char *cur; |
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285 | unsigned int x, y; |
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286 | |
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287 | uint8_t prevfg = -1; |
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288 | uint8_t prevbg = -1; |
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289 | |
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290 | /* 16 bytes assumed for max length per pixel ('\e[5;1;3x;4ym' plus |
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291 | * 1 byte for a CP437 character). |
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292 | * Add height*9 to that (zeroes color at the end and jump to next line) */ |
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293 | ex->size = (cv->height * 9) + (cv->width * cv->height * 16); |
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294 | ex->data = malloc(ex->size); |
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295 | |
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296 | cur = ex->data; |
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297 | |
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298 | for(y = 0; y < cv->height; y++) |
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299 | { |
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300 | uint32_t *lineattr = cv->attr + y * cv->width; |
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301 | uint32_t *linechar = cv->chars + y * cv->width; |
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302 | |
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303 | for(x = 0; x < cv->width; x++) |
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304 | { |
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305 | uint8_t fg = palette[_cucul_argb32_to_ansi4fg(lineattr[x])]; |
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306 | uint8_t bg = palette[_cucul_argb32_to_ansi4bg(lineattr[x])]; |
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307 | uint32_t ch = linechar[x]; |
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308 | |
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309 | if(ch == CUCUL_MAGIC_FULLWIDTH) |
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310 | ch = '?'; |
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311 | |
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312 | if(fg != prevfg || bg != prevbg) |
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313 | { |
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314 | cur += sprintf(cur, "\033[0;"); |
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315 | |
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316 | if(fg < 8) |
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317 | if(bg < 8) |
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318 | cur += sprintf(cur, "3%d;4%dm", fg, bg); |
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319 | else |
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320 | cur += sprintf(cur, "5;3%d;4%dm", fg, bg - 8); |
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321 | else |
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322 | if(bg < 8) |
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323 | cur += sprintf(cur, "1;3%d;4%dm", fg - 8, bg); |
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324 | else |
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325 | cur += sprintf(cur, "5;1;3%d;4%dm", fg - 8, bg - 8); |
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326 | } |
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327 | |
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328 | *cur++ = cucul_utf32_to_cp437(ch); |
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329 | |
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330 | prevfg = fg; |
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331 | prevbg = bg; |
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332 | } |
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333 | |
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334 | if(cv->width == 80) |
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335 | { |
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336 | cur += sprintf(cur, "\033[s\n\033[u"); |
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337 | } |
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338 | else |
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339 | { |
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340 | cur += sprintf(cur, "\033[0m\r\n"); |
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341 | prevfg = -1; |
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342 | prevbg = -1; |
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343 | } |
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344 | } |
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345 | |
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346 | /* Crop to really used size */ |
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347 | ex->size = (uintptr_t)(cur - ex->data); |
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348 | ex->data = realloc(ex->data, ex->size); |
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349 | |
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350 | return 0; |
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351 | } |
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352 | |
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353 | /* Generate HTML representation of current canvas. */ |
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354 | static int export_html(cucul_canvas_t *cv, cucul_buffer_t *ex) |
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355 | { |
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356 | char *cur; |
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357 | unsigned int x, y, len; |
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358 | |
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359 | /* The HTML header: less than 1000 bytes |
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360 | * A line: 7 chars for "<br />\n" |
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361 | * A glyph: 47 chars for "<span style="color:#xxx;background-color:#xxx">" |
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362 | * up to 9 chars for "&#xxxxxx;", far less for pure ASCII |
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363 | * 7 chars for "</span>" */ |
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364 | ex->size = 1000 + cv->height * (7 + cv->width * (47 + 9 + 7)); |
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365 | ex->data = malloc(ex->size); |
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366 | |
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367 | cur = ex->data; |
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368 | |
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369 | /* HTML header */ |
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370 | cur += sprintf(cur, "<html><head>\n"); |
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371 | cur += sprintf(cur, "<title>Generated by libcaca %s</title>\n", VERSION); |
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372 | cur += sprintf(cur, "</head><body>\n"); |
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373 | |
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374 | cur += sprintf(cur, "<div cellpadding='0' cellspacing='0' style='%s'>\n", |
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375 | "font-family: monospace, fixed; font-weight: bold;"); |
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376 | |
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377 | for(y = 0; y < cv->height; y++) |
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378 | { |
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379 | uint32_t *lineattr = cv->attr + y * cv->width; |
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380 | uint32_t *linechar = cv->chars + y * cv->width; |
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381 | |
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382 | for(x = 0; x < cv->width; x += len) |
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383 | { |
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384 | cur += sprintf(cur, "<span style=\"color:#%.03x;" |
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385 | "background-color:#%.03x\">", |
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386 | _cucul_argb32_to_rgb12fg(lineattr[x]), |
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387 | _cucul_argb32_to_rgb12bg(lineattr[x])); |
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388 | |
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389 | for(len = 0; |
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390 | x + len < cv->width && lineattr[x + len] == lineattr[x]; |
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391 | len++) |
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392 | { |
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393 | if(linechar[x + len] == CUCUL_MAGIC_FULLWIDTH) |
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394 | ; |
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395 | else if(linechar[x + len] <= 0x00000020) |
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396 | cur += sprintf(cur, " "); |
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397 | else if(linechar[x + len] < 0x00000080) |
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398 | cur += sprintf(cur, "%c", |
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399 | (unsigned char)linechar[x + len]); |
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400 | else |
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401 | cur += sprintf(cur, "&#%i;", |
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402 | (unsigned int)linechar[x + len]); |
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403 | } |
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404 | cur += sprintf(cur, "</span>"); |
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405 | } |
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406 | /* New line */ |
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407 | cur += sprintf(cur, "<br />\n"); |
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408 | } |
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409 | |
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410 | cur += sprintf(cur, "</div></body></html>\n"); |
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411 | |
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412 | /* Crop to really used size */ |
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413 | ex->size = strlen(ex->data) + 1; |
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414 | ex->data = realloc(ex->data, ex->size); |
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415 | |
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416 | return 0; |
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417 | } |
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418 | |
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419 | /* Export an HTML3 document. This function is way bigger than export_html(), |
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420 | * but permits viewing in old browsers (or limited ones such as links). It |
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421 | * will not work under gecko (mozilla rendering engine) unless you set a |
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422 | * correct header. */ |
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423 | static int export_html3(cucul_canvas_t *cv, cucul_buffer_t *ex) |
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424 | { |
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425 | char *cur; |
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426 | unsigned int x, y, len; |
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427 | |
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428 | /* The HTML table markup: less than 1000 bytes |
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429 | * A line: 10 chars for "<tr></tr>\n" |
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430 | * A glyph: 40 chars for "<td bgcolor=#xxxxxx><font color=#xxxxxx>" |
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431 | * up to 9 chars for "&#xxxxxx;", far less for pure ASCII |
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432 | * 12 chars for "</font></td>" */ |
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433 | ex->size = 1000 + cv->height * (10 + cv->width * (40 + 9 + 12)); |
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434 | ex->data = malloc(ex->size); |
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435 | |
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436 | cur = ex->data; |
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437 | |
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438 | /* Table */ |
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439 | cur += sprintf(cur, "<table cols='%d' cellpadding='0' cellspacing='0'>\n", |
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440 | cv->height); |
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441 | |
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442 | for(y = 0; y < cv->height; y++) |
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443 | { |
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444 | uint32_t *lineattr = cv->attr + y * cv->width; |
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445 | uint32_t *linechar = cv->chars + y * cv->width; |
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446 | |
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447 | cur += sprintf(cur, "<tr>"); |
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448 | |
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449 | for(x = 0; x < cv->width; x += len) |
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450 | { |
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451 | unsigned int i; |
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452 | |
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453 | /* Use colspan option to factor cells with same attributes |
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454 | * (see below) */ |
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455 | len = 1; |
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456 | while(x + len < cv->width && lineattr[x + len] == lineattr[x]) |
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457 | len++; |
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458 | |
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459 | cur += sprintf(cur, "<td bgcolor=#%.06lx", (unsigned long int) |
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460 | _cucul_argb32_to_rgb24bg(lineattr[x])); |
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461 | |
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462 | if(len > 1) |
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463 | cur += sprintf(cur, " colspan=%d", len); |
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464 | |
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465 | cur += sprintf(cur, "><font color=#%.06lx>", (unsigned long int) |
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466 | _cucul_argb32_to_rgb24fg(lineattr[x])); |
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467 | |
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468 | for(i = 0; i < len; i++) |
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469 | { |
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470 | if(linechar[x + i] == CUCUL_MAGIC_FULLWIDTH) |
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471 | ; |
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472 | else if(linechar[x + i] <= 0x00000020) |
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473 | cur += sprintf(cur, " "); |
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474 | else if(linechar[x + i] < 0x00000080) |
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475 | cur += sprintf(cur, "%c", (unsigned char)linechar[x + i]); |
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476 | else |
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477 | cur += sprintf(cur, "&#%i;", (unsigned int)linechar[x + i]); |
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478 | } |
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479 | |
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480 | cur += sprintf(cur, "</font></td>"); |
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481 | } |
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482 | cur += sprintf(cur, "</tr>\n"); |
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483 | } |
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484 | |
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485 | /* Footer */ |
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486 | cur += sprintf(cur, "</table>\n"); |
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487 | |
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488 | /* Crop to really used size */ |
---|
489 | ex->size = (uintptr_t)(cur - ex->data); |
---|
490 | ex->data = realloc(ex->data, ex->size); |
---|
491 | |
---|
492 | return 0; |
---|
493 | } |
---|
494 | |
---|
495 | /* Export a text file with IRC colours */ |
---|
496 | static int export_irc(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
497 | { |
---|
498 | static uint8_t const palette[] = |
---|
499 | { |
---|
500 | 1, 2, 3, 10, 5, 6, 7, 15, /* Dark */ |
---|
501 | 14, 12, 9, 11, 4, 13, 8, 0, /* Light */ |
---|
502 | }; |
---|
503 | |
---|
504 | char *cur; |
---|
505 | unsigned int x, y; |
---|
506 | |
---|
507 | /* 14 bytes assumed for max length per pixel. Worst case scenario: |
---|
508 | * ^Cxx,yy 6 bytes |
---|
509 | * ^B^B 2 bytes |
---|
510 | * ch 6 bytes |
---|
511 | * 3 bytes for max length per line. Worst case scenario: |
---|
512 | * <spc> 1 byte (for empty lines) |
---|
513 | * \r\n 2 bytes |
---|
514 | * In real life, the average bytes per pixel value will be around 5. |
---|
515 | */ |
---|
516 | |
---|
517 | ex->size = 2 + cv->height * (3 + cv->width * 14); |
---|
518 | ex->data = malloc(ex->size); |
---|
519 | |
---|
520 | cur = ex->data; |
---|
521 | |
---|
522 | for(y = 0; y < cv->height; y++) |
---|
523 | { |
---|
524 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
525 | uint32_t *linechar = cv->chars + y * cv->width; |
---|
526 | |
---|
527 | uint8_t prevfg = 0x10; |
---|
528 | uint8_t prevbg = 0x10; |
---|
529 | |
---|
530 | for(x = 0; x < cv->width; x++) |
---|
531 | { |
---|
532 | uint32_t attr = lineattr[x]; |
---|
533 | uint8_t fg = palette[_cucul_argb32_to_ansi4fg(attr)]; |
---|
534 | uint8_t bg = palette[_cucul_argb32_to_ansi4bg(attr)]; |
---|
535 | uint32_t ch = linechar[x]; |
---|
536 | |
---|
537 | if(ch == CUCUL_MAGIC_FULLWIDTH) |
---|
538 | continue; |
---|
539 | |
---|
540 | if((attr & 0xffff) == CUCUL_COLOR_DEFAULT) |
---|
541 | fg = 0x10; |
---|
542 | |
---|
543 | if((attr >> 16) == CUCUL_COLOR_TRANSPARENT) |
---|
544 | bg = 0x10; |
---|
545 | |
---|
546 | /* TODO: optimise series of same fg / same bg |
---|
547 | * don't change fg value if ch == ' ' |
---|
548 | * make sure the \x03,%d trick works everywhere */ |
---|
549 | if(bg != prevbg || fg != prevfg) |
---|
550 | { |
---|
551 | int need_escape = 0; |
---|
552 | |
---|
553 | if(bg == 0x10) |
---|
554 | { |
---|
555 | if(fg == 0x10) |
---|
556 | cur += sprintf(cur, "\x0f"); |
---|
557 | else |
---|
558 | { |
---|
559 | if(prevbg == 0x10) |
---|
560 | cur += sprintf(cur, "\x03%d", fg); |
---|
561 | else |
---|
562 | cur += sprintf(cur, "\x0f\x03%d", fg); |
---|
563 | |
---|
564 | if(ch == (uint32_t)',') |
---|
565 | need_escape = 1; |
---|
566 | } |
---|
567 | } |
---|
568 | else |
---|
569 | { |
---|
570 | if(fg == 0x10) |
---|
571 | cur += sprintf(cur, "\x0f\x03,%d", bg); |
---|
572 | else |
---|
573 | cur += sprintf(cur, "\x03%d,%d", fg, bg); |
---|
574 | } |
---|
575 | |
---|
576 | if(ch >= (uint32_t)'0' && ch <= (uint32_t)'9') |
---|
577 | need_escape = 1; |
---|
578 | |
---|
579 | if(need_escape) |
---|
580 | cur += sprintf(cur, "\x02\x02"); |
---|
581 | } |
---|
582 | |
---|
583 | cur += cucul_utf32_to_utf8(cur, ch); |
---|
584 | prevfg = fg; |
---|
585 | prevbg = bg; |
---|
586 | } |
---|
587 | |
---|
588 | /* TODO: do the same the day we optimise whole lines above */ |
---|
589 | if(!cv->width) |
---|
590 | *cur++ = ' '; |
---|
591 | |
---|
592 | *cur++ = '\r'; |
---|
593 | *cur++ = '\n'; |
---|
594 | } |
---|
595 | |
---|
596 | /* Crop to really used size */ |
---|
597 | ex->size = (uintptr_t)(cur - ex->data); |
---|
598 | ex->data = realloc(ex->data, ex->size); |
---|
599 | |
---|
600 | return 0; |
---|
601 | } |
---|
602 | |
---|
603 | /* Export a PostScript document. */ |
---|
604 | static int export_ps(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
605 | { |
---|
606 | static char const *ps_header = |
---|
607 | "%!\n" |
---|
608 | "%% libcaca PDF export\n" |
---|
609 | "%%LanguageLevel: 2\n" |
---|
610 | "%%Pages: 1\n" |
---|
611 | "%%DocumentData: Clean7Bit\n" |
---|
612 | "/csquare {\n" |
---|
613 | " newpath\n" |
---|
614 | " 0 0 moveto\n" |
---|
615 | " 0 1 rlineto\n" |
---|
616 | " 1 0 rlineto\n" |
---|
617 | " 0 -1 rlineto\n" |
---|
618 | " closepath\n" |
---|
619 | " setrgbcolor\n" |
---|
620 | " fill\n" |
---|
621 | "} def\n" |
---|
622 | "/S {\n" |
---|
623 | " Show\n" |
---|
624 | "} bind def\n" |
---|
625 | "/Courier-Bold findfont\n" |
---|
626 | "8 scalefont\n" |
---|
627 | "setfont\n" |
---|
628 | "gsave\n" |
---|
629 | "6 10 scale\n"; |
---|
630 | |
---|
631 | char *cur; |
---|
632 | unsigned int x, y; |
---|
633 | |
---|
634 | /* 200 is arbitrary but should be ok */ |
---|
635 | ex->size = strlen(ps_header) + 100 + cv->height * (32 + cv->width * 200); |
---|
636 | ex->data = malloc(ex->size); |
---|
637 | |
---|
638 | cur = ex->data; |
---|
639 | |
---|
640 | /* Header */ |
---|
641 | cur += sprintf(cur, "%s", ps_header); |
---|
642 | cur += sprintf(cur, "0 %d translate\n", cv->height); |
---|
643 | |
---|
644 | /* Background, drawn using csquare macro defined in header */ |
---|
645 | for(y = cv->height; y--; ) |
---|
646 | { |
---|
647 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
648 | |
---|
649 | for(x = 0; x < cv->width; x++) |
---|
650 | { |
---|
651 | uint8_t argb[8]; |
---|
652 | _cucul_argb32_to_argb4(*lineattr++, argb); |
---|
653 | cur += sprintf(cur, "1 0 translate\n %f %f %f csquare\n", |
---|
654 | (float)argb[1] * (1.0 / 0xf), |
---|
655 | (float)argb[2] * (1.0 / 0xf), |
---|
656 | (float)argb[3] * (1.0 / 0xf)); |
---|
657 | } |
---|
658 | |
---|
659 | /* Return to beginning of the line, and jump to the next one */ |
---|
660 | cur += sprintf(cur, "-%d 1 translate\n", cv->width); |
---|
661 | } |
---|
662 | |
---|
663 | cur += sprintf(cur, "grestore\n"); /* Restore transformation matrix */ |
---|
664 | cur += sprintf(cur, "0 %d translate\n", cv->height*10); |
---|
665 | |
---|
666 | for(y = cv->height; y--; ) |
---|
667 | { |
---|
668 | uint32_t *lineattr = cv->attr + (cv->height - y - 1) * cv->width; |
---|
669 | uint32_t *linechar = cv->chars + (cv->height - y - 1) * cv->width; |
---|
670 | |
---|
671 | for(x = 0; x < cv->width; x++) |
---|
672 | { |
---|
673 | uint8_t argb[8]; |
---|
674 | uint32_t ch = *linechar++; |
---|
675 | |
---|
676 | _cucul_argb32_to_argb4(*lineattr++, argb); |
---|
677 | |
---|
678 | cur += sprintf(cur, "newpath\n"); |
---|
679 | cur += sprintf(cur, "%d %d moveto\n", (x + 1) * 6, y * 10 + 2); |
---|
680 | cur += sprintf(cur, "%f %f %f setrgbcolor\n", |
---|
681 | (float)argb[5] * (1.0 / 0xf), |
---|
682 | (float)argb[6] * (1.0 / 0xf), |
---|
683 | (float)argb[7] * (1.0 / 0xf)); |
---|
684 | |
---|
685 | if(ch < 0x00000020) |
---|
686 | cur += sprintf(cur, "(?) show\n"); |
---|
687 | else if(ch >= 0x00000080) |
---|
688 | cur += sprintf(cur, "(?) show\n"); |
---|
689 | else switch((uint8_t)(ch & 0x7f)) |
---|
690 | { |
---|
691 | case '\\': |
---|
692 | case '(': |
---|
693 | case ')': |
---|
694 | cur += sprintf(cur, "(\\%c) show\n", (unsigned char)ch); |
---|
695 | break; |
---|
696 | default: |
---|
697 | cur += sprintf(cur, "(%c) show\n", (unsigned char)ch); |
---|
698 | break; |
---|
699 | } |
---|
700 | } |
---|
701 | } |
---|
702 | |
---|
703 | cur += sprintf(cur, "showpage\n"); |
---|
704 | |
---|
705 | /* Crop to really used size */ |
---|
706 | ex->size = (uintptr_t)(cur - ex->data); |
---|
707 | ex->data = realloc(ex->data, ex->size); |
---|
708 | |
---|
709 | return 0; |
---|
710 | } |
---|
711 | |
---|
712 | /* Export an SVG vector image */ |
---|
713 | static int export_svg(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
714 | { |
---|
715 | static char const svg_header[] = |
---|
716 | "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" |
---|
717 | "<svg width=\"%d\" height=\"%d\" viewBox=\"0 0 %d %d\"" |
---|
718 | " xmlns=\"http://www.w3.org/2000/svg\"" |
---|
719 | " xmlns:xlink=\"http://www.w3.org/1999/xlink\"" |
---|
720 | " xml:space=\"preserve\" version=\"1.1\" baseProfile=\"full\">\n"; |
---|
721 | |
---|
722 | char *cur; |
---|
723 | unsigned int x, y; |
---|
724 | |
---|
725 | /* 200 is arbitrary but should be ok */ |
---|
726 | ex->size = strlen(svg_header) + 128 + cv->width * cv->height * 200; |
---|
727 | ex->data = malloc(ex->size); |
---|
728 | |
---|
729 | cur = ex->data; |
---|
730 | |
---|
731 | /* Header */ |
---|
732 | cur += sprintf(cur, svg_header, cv->width * 6, cv->height * 10, |
---|
733 | cv->width * 6, cv->height * 10); |
---|
734 | |
---|
735 | cur += sprintf(cur, " <g id=\"mainlayer\" font-size=\"10\"" |
---|
736 | " style=\"font-family: monospace\">\n"); |
---|
737 | |
---|
738 | /* Background */ |
---|
739 | for(y = 0; y < cv->height; y++) |
---|
740 | { |
---|
741 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
742 | |
---|
743 | for(x = 0; x < cv->width; x++) |
---|
744 | { |
---|
745 | cur += sprintf(cur, "<rect style=\"fill:#%.03x\" x=\"%d\" y=\"%d\"" |
---|
746 | " width=\"6\" height=\"10\"/>\n", |
---|
747 | _cucul_argb32_to_rgb12bg(*lineattr++), |
---|
748 | x * 6, y * 10); |
---|
749 | } |
---|
750 | } |
---|
751 | |
---|
752 | /* Text */ |
---|
753 | for(y = 0; y < cv->height; y++) |
---|
754 | { |
---|
755 | uint32_t *lineattr = cv->attr + y * cv->width; |
---|
756 | uint32_t *linechar = cv->chars + y * cv->width; |
---|
757 | |
---|
758 | for(x = 0; x < cv->width; x++) |
---|
759 | { |
---|
760 | uint32_t ch = *linechar++; |
---|
761 | |
---|
762 | if(ch == ' ' || ch == CUCUL_MAGIC_FULLWIDTH) |
---|
763 | { |
---|
764 | lineattr++; |
---|
765 | continue; |
---|
766 | } |
---|
767 | |
---|
768 | cur += sprintf(cur, "<text style=\"fill:#%.03x\" " |
---|
769 | "x=\"%d\" y=\"%d\">", |
---|
770 | _cucul_argb32_to_rgb12fg(*lineattr++), |
---|
771 | x * 6, (y * 10) + 8); |
---|
772 | |
---|
773 | if(ch < 0x00000020) |
---|
774 | *cur++ = '?'; |
---|
775 | else if(ch > 0x0000007f) |
---|
776 | cur += cucul_utf32_to_utf8(cur, ch); |
---|
777 | else switch((uint8_t)ch) |
---|
778 | { |
---|
779 | case '>': cur += sprintf(cur, ">"); break; |
---|
780 | case '<': cur += sprintf(cur, "<"); break; |
---|
781 | case '&': cur += sprintf(cur, "&"); break; |
---|
782 | default: *cur++ = ch; break; |
---|
783 | } |
---|
784 | cur += sprintf(cur, "</text>\n"); |
---|
785 | } |
---|
786 | } |
---|
787 | |
---|
788 | cur += sprintf(cur, " </g>\n"); |
---|
789 | cur += sprintf(cur, "</svg>\n"); |
---|
790 | |
---|
791 | /* Crop to really used size */ |
---|
792 | ex->size = (uintptr_t)(cur - ex->data); |
---|
793 | ex->data = realloc(ex->data, ex->size); |
---|
794 | |
---|
795 | return 0; |
---|
796 | } |
---|
797 | |
---|
798 | /* Export a TGA image */ |
---|
799 | static int export_tga(cucul_canvas_t *cv, cucul_buffer_t *ex) |
---|
800 | { |
---|
801 | char const * const *fontlist; |
---|
802 | char * cur; |
---|
803 | cucul_font_t *f; |
---|
804 | unsigned int i, w, h; |
---|
805 | |
---|
806 | fontlist = cucul_get_font_list(); |
---|
807 | if(!fontlist[0]) |
---|
808 | return -1; |
---|
809 | |
---|
810 | f = cucul_load_font(fontlist[0], 0); |
---|
811 | |
---|
812 | w = cucul_get_canvas_width(cv) * cucul_get_font_width(f); |
---|
813 | h = cucul_get_canvas_height(cv) * cucul_get_font_height(f); |
---|
814 | |
---|
815 | ex->size = w * h * 4 + 18; /* 32 bpp + 18 bytes for the header */ |
---|
816 | ex->data = malloc(ex->size); |
---|
817 | |
---|
818 | cur = ex->data; |
---|
819 | |
---|
820 | /* ID Length */ |
---|
821 | cur += sprintf(cur, "%c", 0); |
---|
822 | /* Color Map Type: no colormap */ |
---|
823 | cur += sprintf(cur, "%c", 0); |
---|
824 | /* Image Type: uncompressed truecolor */ |
---|
825 | cur += sprintf(cur, "%c", 2); |
---|
826 | /* Color Map Specification: no color map */ |
---|
827 | memset(cur, 0, 5); cur += 5; |
---|
828 | |
---|
829 | /* Image Specification */ |
---|
830 | cur += sprintf(cur, "%c%c", 0, 0); /* X Origin */ |
---|
831 | cur += sprintf(cur, "%c%c", 0, 0); /* Y Origin */ |
---|
832 | cur += sprintf(cur, "%c%c", w & 0xff, w >> 8); /* Width */ |
---|
833 | cur += sprintf(cur, "%c%c", h & 0xff, h >> 8); /* Height */ |
---|
834 | cur += sprintf(cur, "%c", 32); /* Pixel Depth */ |
---|
835 | cur += sprintf(cur, "%c", 40); /* Image Descriptor */ |
---|
836 | |
---|
837 | /* Image ID: no ID */ |
---|
838 | /* Color Map Data: no colormap */ |
---|
839 | |
---|
840 | /* Image Data */ |
---|
841 | cucul_render_canvas(cv, f, cur, w, h, 4 * w); |
---|
842 | |
---|
843 | /* Swap bytes. What a waste of time. */ |
---|
844 | for(i = 0; i < w * h * 4; i += 4) |
---|
845 | { |
---|
846 | char w; |
---|
847 | w = cur[i]; cur[i] = cur[i + 3]; cur[i + 3] = w; |
---|
848 | w = cur[i + 1]; cur[i + 1] = cur[i + 2]; cur[i + 2] = w; |
---|
849 | } |
---|
850 | |
---|
851 | cucul_free_font(f); |
---|
852 | |
---|
853 | return 0; |
---|
854 | } |
---|
855 | |
---|