1 | /* vim:expandtab:ts=2 sw=2:
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2 | */
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3 | /* Grafx2 - The Ultimate 256-color bitmap paint program
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4 |
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5 | Copyright 2011 Pawel Góralski
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6 | Copyright 2008 Yves Rizoud
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7 | Copyright 2007 Adrien Destugues
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8 | Copyright 1996-2001 Sunset Design (Guillaume Dorme & Karl Maritaud)
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9 |
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10 | Grafx2 is free software; you can redistribute it and/or
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11 | modify it under the terms of the GNU General Public License
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12 | as published by the Free Software Foundation; version 2
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13 | of the License.
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14 |
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15 | Grafx2 is distributed in the hope that it will be useful,
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | GNU General Public License for more details.
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19 |
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20 | You should have received a copy of the GNU General Public License
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21 | along with Grafx2; if not, see <http://www.gnu.org/licenses/>
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22 | */
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23 |
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24 | // Fonctions de lecture/ecriture file, gèrent les systèmes big-endian et
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25 | // little-endian.
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26 |
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27 | #define _XOPEN_SOURCE 500
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28 |
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29 | #include <SDL_endian.h>
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30 | #include <string.h>
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31 | #include <sys/stat.h>
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32 | #include <errno.h>
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33 | #include <fcntl.h>
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34 | #include <unistd.h>
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35 |
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36 | #if defined(__amigaos4__) || defined(__AROS__) || defined(__MORPHOS__) || defined(__amigaos__)
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37 | #include <proto/dos.h>
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38 | #include <sys/types.h>
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39 | #include <dirent.h>
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40 | #elif defined(__WIN32__)
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41 | #include <dirent.h>
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42 | #include <windows.h>
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43 | //#include <commdlg.h>
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44 | #elif defined(__MINT__)
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45 | #include <mint/osbind.h>
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46 | #include <mint/sysbind.h>
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47 | #include <dirent.h>
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48 | #else
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49 | #include <dirent.h>
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50 | #endif
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51 |
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52 | #include "struct.h"
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53 | #include "io.h"
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54 | #include "realpath.h"
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55 |
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56 | #include "text.h"
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57 |
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58 | // Lit un octet
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59 | // Renvoie -1 si OK, 0 en cas d'erreur
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60 | int Read_byte(FILE *file, byte *dest)
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61 | {
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62 | return fread(dest, 1, 1, file) == 1;
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63 | }
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64 | // Ecrit un octet
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65 | // Renvoie -1 si OK, 0 en cas d'erreur
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66 | int Write_byte(FILE *file, byte b)
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67 | {
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68 | return fwrite(&b, 1, 1, file) == 1;
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69 | }
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70 | // Lit des octets
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71 | // Renvoie -1 si OK, 0 en cas d'erreur
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72 | int Read_bytes(FILE *file, void *dest, size_t size)
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73 | {
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74 | return fread(dest, 1, size, file) == size;
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75 | }
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76 | // Ecrit des octets
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77 | // Renvoie -1 si OK, 0 en cas d'erreur
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78 | int Write_bytes(FILE *file, void *src, size_t size)
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79 | {
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80 | return fwrite(src, 1, size, file) == size;
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81 | }
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82 |
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83 | // Lit un word (little-endian)
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84 | // Renvoie -1 si OK, 0 en cas d'erreur
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85 | int Read_word_le(FILE *file, word *dest)
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86 | {
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87 | if (fread(dest, 1, sizeof(word), file) != sizeof(word))
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88 | return 0;
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89 | #if SDL_BYTEORDER != SDL_LIL_ENDIAN
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90 | *dest = SDL_Swap16(*dest);
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91 | #endif
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92 | return -1;
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93 | }
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94 | // Ecrit un word (little-endian)
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95 | // Renvoie -1 si OK, 0 en cas d'erreur
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96 | int Write_word_le(FILE *file, word w)
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97 | {
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98 | #if SDL_BYTEORDER != SDL_LIL_ENDIAN
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99 | w = SDL_Swap16(w);
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100 | #endif
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101 | return fwrite(&w, 1, sizeof(word), file) == sizeof(word);
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102 | }
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103 | // Lit un word (big-endian)
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104 | // Renvoie -1 si OK, 0 en cas d'erreur
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105 | int Read_word_be(FILE *file, word *dest)
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106 | {
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107 | if (fread(dest, 1, sizeof(word), file) != sizeof(word))
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108 | return 0;
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109 | #if SDL_BYTEORDER != SDL_BIG_ENDIAN
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110 | *dest = SDL_Swap16(*dest);
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111 | #endif
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112 | return -1;
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113 | }
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114 | // Ecrit un word (big-endian)
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115 | // Renvoie -1 si OK, 0 en cas d'erreur
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116 | int Write_word_be(FILE *file, word w)
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117 | {
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118 | #if SDL_BYTEORDER != SDL_BIG_ENDIAN
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119 | w = SDL_Swap16(w);
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120 | #endif
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121 | return fwrite(&w, 1, sizeof(word), file) == sizeof(word);
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122 | }
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123 | // Lit un dword (little-endian)
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124 | // Renvoie -1 si OK, 0 en cas d'erreur
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125 | int Read_dword_le(FILE *file, dword *dest)
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126 | {
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127 | if (fread(dest, 1, sizeof(dword), file) != sizeof(dword))
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128 | return 0;
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129 | #if SDL_BYTEORDER != SDL_LIL_ENDIAN
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130 | *dest = SDL_Swap32(*dest);
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131 | #endif
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132 | return -1;
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133 | }
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134 | // Ecrit un dword (little-endian)
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135 | // Renvoie -1 si OK, 0 en cas d'erreur
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136 | int Write_dword_le(FILE *file, dword dw)
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137 | {
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138 | #if SDL_BYTEORDER != SDL_LIL_ENDIAN
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139 | dw = SDL_Swap32(dw);
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140 | #endif
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141 | return fwrite(&dw, 1, sizeof(dword), file) == sizeof(dword);
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142 | }
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143 |
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144 | // Lit un dword (big-endian)
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145 | // Renvoie -1 si OK, 0 en cas d'erreur
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146 | int Read_dword_be(FILE *file, dword *dest)
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147 | {
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148 | if (fread(dest, 1, sizeof(dword), file) != sizeof(dword))
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149 | return 0;
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150 | #if SDL_BYTEORDER != SDL_BIG_ENDIAN
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151 | *dest = SDL_Swap32(*dest);
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152 | #endif
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153 | return -1;
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154 | }
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155 | // Ecrit un dword (big-endian)
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156 | // Renvoie -1 si OK, 0 en cas d'erreur
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157 | int Write_dword_be(FILE *file, dword dw)
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158 | {
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159 | #if SDL_BYTEORDER != SDL_BIG_ENDIAN
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160 | dw = SDL_Swap32(dw);
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161 | #endif
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162 | return fwrite(&dw, 1, sizeof(dword), file) == sizeof(dword);
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163 | }
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164 |
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165 | // Détermine la position du dernier '/' ou '\\' dans une chaine,
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166 | // typiquement pour séparer le nom de file d'un chemin.
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167 | // Attention, sous Windows, il faut s'attendre aux deux car
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168 | // par exemple un programme lancé sous GDB aura comme argv[0]:
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169 | // d:\Data\C\GFX2\grafx2/grafx2.exe
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170 | char * Find_last_separator(const char * str)
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171 | {
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172 | const char * position = NULL;
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173 | for (; *str != '\0'; str++)
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174 | if (*str == PATH_SEPARATOR[0]
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175 | #ifdef __WIN32__
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176 | || *str == '/'
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177 | #elif __AROS__
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178 | || *str == ':'
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179 | #endif
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180 | )
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181 | position = str;
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182 | return (char *)position;
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183 | }
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184 | // Récupère la partie "nom de file seul" d'un chemin
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185 | void Extract_filename(char *dest, const char *source)
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186 | {
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187 | const char * position = Find_last_separator(source);
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188 |
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189 | if (position)
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190 | strcpy(dest,position+1);
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191 | else
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192 | strcpy(dest,source);
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193 | }
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194 | // Récupère la partie "répertoire+/" d'un chemin.
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195 | void Extract_path(char *dest, const char *source)
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196 | {
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197 | char * position=NULL;
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198 |
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199 | Realpath(source,dest);
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200 | position = Find_last_separator(dest);
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201 | if (position)
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202 | *(position+1) = '\0';
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203 | else
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204 | strcat(dest, PATH_SEPARATOR);
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205 | }
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206 |
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207 | ///
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208 | /// Appends a file or directory name to an existing directory name.
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209 | /// As a special case, when the new item is equal to PARENT_DIR, this
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210 | /// will remove the rightmost directory name.
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211 | /// reverse_path is optional, if it's non-null, the function will
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212 | /// write there :
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213 | /// - if filename is ".." : The name of eliminated directory/file
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214 | /// - else: ".."
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215 | void Append_path(char *path, const char *filename, char *reverse_path)
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216 | {
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217 | // Parent
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218 | if (!strcmp(filename, PARENT_DIR))
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219 | {
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220 | // Going up one directory
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221 | long len;
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222 | char * separator_pos;
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223 |
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224 | // Remove trailing slash
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225 | len=strlen(path);
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226 | if (len && (!strcmp(path+len-1,PATH_SEPARATOR)
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227 | #ifdef __WIN32__
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228 | || path[len-1]=='/'
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229 | #endif
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230 | ))
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231 | path[len-1]='\0';
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232 |
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233 | separator_pos=Find_last_separator(path);
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234 | if (separator_pos)
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235 | {
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236 | if (reverse_path)
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237 | strcpy(reverse_path, separator_pos+1);
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238 | #if defined(__AROS__)
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239 | // Don't strip away the colon
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240 | if (*separator_pos == ':') *(separator_pos+1)='\0';
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241 | else *separator_pos='\0';
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242 | #else
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243 | *separator_pos='\0';
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244 | #endif
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245 | }
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246 | else
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247 | {
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248 | if (reverse_path)
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249 | strcpy(reverse_path, path);
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250 | path[0]='\0';
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251 | }
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252 | #if defined(__WIN32__)
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253 | // Roots of drives need a pending antislash
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254 | if (path[0]!='\0' && path[1]==':' && path[2]=='\0')
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255 | {
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256 | strcat(path, PATH_SEPARATOR);
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257 | }
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258 | #endif
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259 | }
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260 | else
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261 | // Sub-directory
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262 | {
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263 | long len;
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264 | // Add trailing slash if needed
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265 | len=strlen(path);
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266 | if (len && (strcmp(path+len-1,PATH_SEPARATOR)
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267 | #ifdef __WIN32__
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268 | && path[len-1]!='/'
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269 | #elif __AROS__
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270 | && path[len-1]!=':' // To avoid paths like volume:/dir
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271 | #endif
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272 | ))
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273 | {
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274 | strcpy(path+len, PATH_SEPARATOR);
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275 | len+=strlen(PATH_SEPARATOR);
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276 | }
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277 | strcat(path, filename);
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278 |
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279 | if (reverse_path)
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280 | strcpy(reverse_path, PARENT_DIR);
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281 | }
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282 | }
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283 |
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284 | int File_exists(char * fname)
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285 | // Détermine si un file passé en paramètre existe ou non dans le
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286 | // répertoire courant.
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287 | {
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288 | struct stat buf;
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289 | int result;
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290 |
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291 | result=stat(fname,&buf);
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292 | if (result!=0)
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293 | return(errno!=ENOENT);
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294 | else
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295 | return 1;
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296 |
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297 | }
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298 | int Directory_exists(char * directory)
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299 | // Détermine si un répertoire passé en paramètre existe ou non dans le
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300 | // répertoire courant.
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301 | {
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302 | DIR* entry; // Structure de lecture des éléments
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303 |
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304 | if (strcmp(directory,PARENT_DIR)==0)
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305 | return 1;
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306 | else
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307 | {
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308 | // On va chercher si le répertoire existe à l'aide d'un Opendir. S'il
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309 | // renvoie NULL c'est que le répertoire n'est pas accessible...
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310 |
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311 | entry=opendir(directory);
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312 | if (entry==NULL)
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313 | return 0;
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314 | else
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315 | {
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316 | closedir(entry);
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317 | return 1;
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318 | }
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319 | }
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320 | }
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321 |
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322 | /// Check if a file or directory is hidden.
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323 | int File_is_hidden(const char *fname, const char *full_name)
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324 | {
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325 | #if defined(__amigaos4__) || defined(__AROS__) || defined(__MORPHOS__) || defined(__amigaos__) || defined(__MINT__)
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326 | // False (unable to determine, or irrelevent for platform)
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327 | (void)fname;//unused
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328 | (void)full_name;//unused
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329 | return 0;
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330 | #elif defined(__WIN32__)
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331 | unsigned long att;
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332 | if (full_name!=NULL)
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333 | att = GetFileAttributesA(full_name);
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334 | else
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335 | att = GetFileAttributesA(fname);
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336 | if (att==INVALID_FILE_ATTRIBUTES)
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337 | return 0;
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338 | return (att&FILE_ATTRIBUTE_HIDDEN)?1:0;
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339 | #else
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340 | (void)full_name;//unused
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341 | // On linux/unix (default), files are considered hidden if their name
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342 | // begins with a .
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343 | // As a special case, we'll consider 'parent directory' (..) never hidden.
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344 | return fname[0]=='.' && strcmp(fname, PARENT_DIR);
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345 | #endif
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346 | }
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347 | // Taille de fichier, en octets
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348 | int File_length(const char * fname)
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349 | {
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350 | struct stat infos_fichier;
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351 | if (stat(fname,&infos_fichier))
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352 | return 0;
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353 | return infos_fichier.st_size;
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354 | }
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355 | int File_length_file(FILE * file)
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356 | {
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357 | struct stat infos_fichier;
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358 | if (fstat(fileno(file),&infos_fichier))
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359 | return 0;
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360 | return infos_fichier.st_size;
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361 | }
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362 |
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363 | void For_each_file(const char * directory_name, void Callback(const char *))
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364 | {
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365 | // Pour scan de répertoire
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366 | DIR* current_directory; //Répertoire courant
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367 | struct dirent* entry; // Structure de lecture des éléments
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368 | char full_filename[MAX_PATH_CHARACTERS];
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369 | int filename_position;
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370 | strcpy(full_filename, directory_name);
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371 | current_directory=opendir(directory_name);
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372 | if(current_directory == NULL) return; // Répertoire invalide ...
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373 | filename_position = strlen(full_filename);
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374 | #if defined(__AROS__)
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375 | if (filename_position==0 || (strcmp(full_filename+filename_position-1,PATH_SEPARATOR) && strcmp(full_filename+filename_position-1,":")))
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376 | #else
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377 | if (filename_position==0 || strcmp(full_filename+filename_position-1,PATH_SEPARATOR))
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378 | #endif
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379 | {
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380 | strcat(full_filename, PATH_SEPARATOR);
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381 | filename_position = strlen(full_filename);
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382 | }
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383 | while ((entry=readdir(current_directory)))
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384 | {
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385 | struct stat Infos_enreg;
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386 | strcpy(&full_filename[filename_position], entry->d_name);
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387 | stat(full_filename,&Infos_enreg);
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388 | if (S_ISREG(Infos_enreg.st_mode))
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389 | {
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390 | Callback(full_filename);
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391 | }
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392 | }
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393 | closedir(current_directory);
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394 | }
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395 |
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396 | void For_each_font_in_tree(const char * directory_name)
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397 | {
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398 | // Pour scan de répertoire
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399 | DIR* current_directory; //Répertoire courant
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400 | struct dirent* entry; // Structure de lecture des éléments
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401 | char full_filename[MAX_PATH_CHARACTERS];
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402 | int filename_position;
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403 | strcpy(full_filename, directory_name);
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404 | current_directory=opendir(directory_name);
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405 | if(current_directory == NULL) return; // Répertoire invalide ...
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406 | filename_position = strlen(full_filename);
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407 | #if defined(__AROS__)
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408 | if (filename_position==0 || (strcmp(full_filename+filename_position-1,PATH_SEPARATOR) && strcmp(full_filename+filename_position-1,":")))
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409 | #else
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410 | if (filename_position==0 || strcmp(full_filename+filename_position-1,PATH_SEPARATOR))
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411 | #endif
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412 | {
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413 | strcat(full_filename, PATH_SEPARATOR);
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414 | filename_position = strlen(full_filename);
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415 | }
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416 | while ((entry=readdir(current_directory)))
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417 | {
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418 | struct stat Infos_enreg;
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419 | strcpy(&full_filename[filename_position], entry->d_name);
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420 | stat(full_filename,&Infos_enreg);
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421 | if (S_ISREG(Infos_enreg.st_mode))
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422 | {
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423 | Add_font(full_filename);
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424 | }else if (S_ISDIR(Infos_enreg.st_mode))
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425 | {
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426 | if (strcmp(entry->d_name,".") != 0 && strcmp(entry->d_name,"..") != 0)
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427 | For_each_font_in_tree(full_filename);
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428 | }
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429 | }
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430 | closedir(current_directory);
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431 | }
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432 |
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433 | /// Scans a directory, calls Callback for each file or directory in it,
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434 | void For_each_directory_entry(const char * directory_name, void Callback(const char *, byte is_file, byte is_directory, byte is_hidden))
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435 | {
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436 | // Pour scan de répertoire
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437 | DIR* current_directory; //Répertoire courant
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438 | struct dirent* entry; // Structure de lecture des éléments
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439 | char full_filename[MAX_PATH_CHARACTERS];
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440 | int filename_position;
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441 | strcpy(full_filename, directory_name);
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442 | current_directory=opendir(full_filename);
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443 | if(current_directory == NULL) return; // Répertoire invalide ...
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444 | filename_position = strlen(full_filename);
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445 | #if defined(__AROS__)
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446 | if (filename_position==0 || (strcmp(full_filename+filename_position-1,PATH_SEPARATOR) && strcmp(full_filename+filename_position-1,":")))
|
---|
447 | #else
|
---|
448 | if (filename_position==0 || strcmp(full_filename+filename_position-1,PATH_SEPARATOR))
|
---|
449 | #endif
|
---|
450 | {
|
---|
451 | strcat(full_filename, PATH_SEPARATOR);
|
---|
452 | filename_position = strlen(full_filename);
|
---|
453 | }
|
---|
454 | while ((entry=readdir(current_directory)))
|
---|
455 | {
|
---|
456 | struct stat Infos_enreg;
|
---|
457 | strcpy(&full_filename[filename_position], entry->d_name);
|
---|
458 | stat(full_filename,&Infos_enreg);
|
---|
459 | Callback(
|
---|
460 | full_filename,
|
---|
461 | S_ISREG(Infos_enreg.st_mode),
|
---|
462 | S_ISDIR(Infos_enreg.st_mode),
|
---|
463 | File_is_hidden(entry->d_name, full_filename));
|
---|
464 | }
|
---|
465 | closedir(current_directory);
|
---|
466 | }
|
---|
467 |
|
---|
468 |
|
---|
469 | void Get_full_filename(char * output_name, char * file_name, char * directory_name)
|
---|
470 | {
|
---|
471 | strcpy(output_name,directory_name);
|
---|
472 | if (output_name[0] != '\0')
|
---|
473 | {
|
---|
474 | // Append a separator at the end of path, if there isn't one already.
|
---|
475 | // This handles the case of directory variables which contain one,
|
---|
476 | // as well as directories like "/" on Unix.
|
---|
477 | #if defined(__AROS__)
|
---|
478 | // additional check for ':' to avoid paths like PROGDIR:/unnamed.gif
|
---|
479 | if ((output_name[strlen(output_name)-1]!=PATH_SEPARATOR[0]) && (output_name[strlen(output_name)-1]!=':'))
|
---|
480 | #else
|
---|
481 | if (output_name[strlen(output_name)-1]!=PATH_SEPARATOR[0])
|
---|
482 | #endif
|
---|
483 | strcat(output_name,PATH_SEPARATOR);
|
---|
484 | }
|
---|
485 | strcat(output_name,file_name);
|
---|
486 | }
|
---|
487 |
|
---|
488 | /// Lock file used to prevent several instances of grafx2 from harming each others' backups
|
---|
489 | #ifdef __WIN32__
|
---|
490 | HANDLE Lock_file_handle = INVALID_HANDLE_VALUE;
|
---|
491 | #else
|
---|
492 | int Lock_file_handle = -1;
|
---|
493 | #endif
|
---|
494 |
|
---|
495 | byte Create_lock_file(const char *file_directory)
|
---|
496 | {
|
---|
497 | #if defined (__amigaos__)||(__AROS__)
|
---|
498 | #warning "Missing code for your platform, please check and correct!"
|
---|
499 | #else
|
---|
500 | char lock_filename[MAX_PATH_CHARACTERS];
|
---|
501 |
|
---|
502 | strcpy(lock_filename,file_directory);
|
---|
503 | strcat(lock_filename,"gfx2.lck");
|
---|
504 |
|
---|
505 | #ifdef __WIN32__
|
---|
506 | // Windowzy method for creating a lock file
|
---|
507 | Lock_file_handle = CreateFile(
|
---|
508 | lock_filename,
|
---|
509 | GENERIC_WRITE,
|
---|
510 | 0, // No sharing
|
---|
511 | NULL,
|
---|
512 | OPEN_ALWAYS,
|
---|
513 | FILE_ATTRIBUTE_NORMAL,
|
---|
514 | NULL);
|
---|
515 | if (Lock_file_handle == INVALID_HANDLE_VALUE)
|
---|
516 | {
|
---|
517 | return -1;
|
---|
518 | }
|
---|
519 | #else
|
---|
520 | // Unixy method for lock file
|
---|
521 | Lock_file_handle = open(lock_filename,O_WRONLY|O_CREAT,S_IRUSR|S_IWUSR);
|
---|
522 | if (Lock_file_handle == -1)
|
---|
523 | {
|
---|
524 | // Usually write-protected media
|
---|
525 | return -1;
|
---|
526 | }
|
---|
527 | if (lockf(Lock_file_handle, F_TLOCK, 0)==-1)
|
---|
528 | {
|
---|
529 | close(Lock_file_handle);
|
---|
530 | // Usually write-protected media
|
---|
531 | return -1;
|
---|
532 | }
|
---|
533 | #endif
|
---|
534 | #endif // __amigaos__ or __AROS__
|
---|
535 | return 0;
|
---|
536 | }
|
---|
537 |
|
---|
538 | void Release_lock_file(const char *file_directory)
|
---|
539 | {
|
---|
540 | char lock_filename[MAX_PATH_CHARACTERS];
|
---|
541 |
|
---|
542 | #ifdef __WIN32__
|
---|
543 | if (Lock_file_handle != INVALID_HANDLE_VALUE)
|
---|
544 | {
|
---|
545 | CloseHandle(Lock_file_handle);
|
---|
546 | }
|
---|
547 | #else
|
---|
548 | if (Lock_file_handle != -1)
|
---|
549 | {
|
---|
550 | close(Lock_file_handle);
|
---|
551 | Lock_file_handle = -1;
|
---|
552 | }
|
---|
553 | #endif
|
---|
554 |
|
---|
555 | // Actual deletion
|
---|
556 | strcpy(lock_filename,file_directory);
|
---|
557 | strcat(lock_filename,"gfx2.lck");
|
---|
558 | remove(lock_filename);
|
---|
559 | }
|
---|