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annotate config.c @ 859:46bb673eed4e

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Load config file and rom.db from appropriate locations on Android
author Michael Pavone <pavone@retrodev.com>
date Wed, 04 Nov 2015 22:48:27 -0800
parents 7ed55a361e79
children 69a6ec208111
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
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5 */
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6 #include "tern.h"
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7 #include "util.h"
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8 #include <stdio.h>
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9 #include <stdlib.h>
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10 #include <string.h>
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11
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bce97fc0bb8a Fix mingw-w64 build and cross-compilation
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12 #ifdef __MINGW64_VERSION_MAJOR
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13 #define MINGW_W64_VERSION (__MINGW64_VERSION_MAJOR * 1000 + __MINGW64_VERSION_MINOR)
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14 #else
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15 #define MINGW_W64_VERSION 0
bce97fc0bb8a Fix mingw-w64 build and cross-compilation
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16 #endif
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17
bce97fc0bb8a Fix mingw-w64 build and cross-compilation
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18 #if defined(_WIN32) && (MINGW_W64_VERSION < 3003)
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19 char * strtok_r(char * input, char * sep, char ** state)
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20 {
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21 if (input) {
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22 *state = input;
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23 }
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24 char * ret = *state;
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25 while (**state && **state != *sep)
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26 {
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27 ++*state;
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28 }
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29 if (**state)
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30 {
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31 **state = 0;
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32 ++*state;
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33 return ret;
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34 }
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35 return NULL;
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36 }
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37 #endif
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38
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39 tern_node * parse_config_int(char **state, int started, int *line)
430
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40 {
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41 char *config_data, *curline;
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42 tern_node * head = NULL;
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43 config_data = started ? NULL : *state;
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44 while ((curline = strtok_r(config_data, "\n", state)))
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45 {
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46
430
7f84090ab1cd Add config file parser and default config file
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47 config_data = NULL;
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48 curline = strip_ws(curline);
7f84090ab1cd Add config file parser and default config file
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49 int len = strlen(curline);
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50 if (!len) {
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41f73c76b978 Fix some memory issues
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51 *line = *line + 1;
430
7f84090ab1cd Add config file parser and default config file
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52 continue;
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53 }
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54 if (curline[0] == '#') {
796
41f73c76b978 Fix some memory issues
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55 *line = *line + 1;
430
7f84090ab1cd Add config file parser and default config file
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56 continue;
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57 }
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58 if (curline[0] == '}') {
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59 if (started) {
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60 return head;
430
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61 }
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
Michael Pavone <pavone@retrodev.com>
parents: 766
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62 fatal_error("unexpected } on line %d\n", *line);
430
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63 }
766
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
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64
430
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65 char * end = curline + len - 1;
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66 if (*end == '{') {
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67 *end = 0;
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68 curline = strip_ws(curline);
796
41f73c76b978 Fix some memory issues
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69 *line = *line + 1;
766
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70 head = tern_insert_node(head, curline, parse_config_int(state, 1, line));
430
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71 } else {
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72 char * val = strip_ws(split_keyval(curline));
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parents:
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73 char * key = curline;
766
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
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74 if (*val) {
431
440efd7d27a9 Read key bindings from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
75 head = tern_insert_ptr(head, key, strdup(val));
766
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
parents: 742
diff changeset
76 } else {
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
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parents: 742
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77 fprintf(stderr, "Key %s is missing a value on line %d\n", key, *line);
430
7f84090ab1cd Add config file parser and default config file
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78 }
796
41f73c76b978 Fix some memory issues
=?UTF-8?q?Higor=20Eur=C3=ADpedes?= <heuripedes@gmail.com>
parents: 795
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79 *line = *line + 1;
430
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80 }
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81 }
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82 return head;
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83 }
7f84090ab1cd Add config file parser and default config file
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84
766
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
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85 tern_node * parse_config(char * config_data)
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
parents: 742
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86 {
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
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87 int line = 1;
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
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88 return parse_config_int(&config_data, 0, &line);
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
parents: 742
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89 }
1b2f8280ba81 WIP changes to support reading cart memory map from ROM DB
Michael Pavone <pavone@retrodev.com>
parents: 742
diff changeset
90
430
7f84090ab1cd Add config file parser and default config file
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91 tern_node * parse_config_file(char * config_path)
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
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92 {
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parents:
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93 tern_node * ret = NULL;
816
7ed55a361e79 Use binary mode for reading shaders and config files so we actually get the number of bytes we expect
Michael Pavone <pavone@retrodev.com>
parents: 799
diff changeset
94 FILE * config_file = fopen(config_path, "rb");
430
7f84090ab1cd Add config file parser and default config file
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95 if (!config_file) {
7f84090ab1cd Add config file parser and default config file
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96 goto open_fail;
7f84090ab1cd Add config file parser and default config file
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parents:
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97 }
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Mike Pavone <pavone@retrodev.com>
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98 long config_size = file_size(config_file);
7f84090ab1cd Add config file parser and default config file
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parents:
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99 if (!config_size) {
7f84090ab1cd Add config file parser and default config file
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parents:
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100 goto config_empty;
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101 }
796
41f73c76b978 Fix some memory issues
=?UTF-8?q?Higor=20Eur=C3=ADpedes?= <heuripedes@gmail.com>
parents: 795
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102 char * config_data = malloc(config_size+1);
430
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103 if (fread(config_data, 1, config_size, config_file) != config_size) {
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104 goto config_read_fail;
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105 }
796
41f73c76b978 Fix some memory issues
=?UTF-8?q?Higor=20Eur=C3=ADpedes?= <heuripedes@gmail.com>
parents: 795
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106 config_data[config_size] = '\0';
41f73c76b978 Fix some memory issues
=?UTF-8?q?Higor=20Eur=C3=ADpedes?= <heuripedes@gmail.com>
parents: 795
diff changeset
107
430
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108 ret = parse_config(config_data);
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109 config_read_fail:
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110 free(config_data);
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111 config_empty:
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112 fclose(config_file);
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113 open_fail:
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114 return ret;
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115 }
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116
859
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117 #ifdef __ANDROID__
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118 #include <SDL.h>
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119
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120 tern_node * parse_config_file_assets(char *config_path)
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121 {
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122 tern_node * ret = NULL;
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123 SDL_RWops *rw = SDL_RWFromFile(config_path, "rb");
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124 if (!rw) {
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125 goto open_fail;
46bb673eed4e Load config file and rom.db from appropriate locations on Android
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126 }
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127 size_t config_size = rw->size(rw);
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parents: 816
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128 if (!config_size) {
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Michael Pavone <pavone@retrodev.com>
parents: 816
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129 goto config_empty;
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130 }
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131
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132 char * config_data = malloc(config_size+1);
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133 if (SDL_RWread(rw, config_data, 1, config_size) != config_size) {
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134 goto config_read_fail;
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Michael Pavone <pavone@retrodev.com>
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135 }
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136 config_data[config_size] = '\0';
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137
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138 ret = parse_config(config_data);
46bb673eed4e Load config file and rom.db from appropriate locations on Android
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parents: 816
diff changeset
139 config_read_fail:
46bb673eed4e Load config file and rom.db from appropriate locations on Android
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parents: 816
diff changeset
140 free(config_data);
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141 config_empty:
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142 SDL_RWclose(rw);
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143 open_fail:
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144 return ret;
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145 }
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146
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147 tern_node * load_config()
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148 {
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149 char *path = alloc_concat(SDL_AndroidGetInternalStoragePath(), "/blastem.cfg");
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150 tern_node * ret = parse_config_file(path);
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151 free(path);
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152 if (ret) {
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153 return ret;
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154 }
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155
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156 ret = parse_config_file_assets("default.cfg");
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157 if (ret) {
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158 return ret;
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159 }
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160
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161 fatal_error("Failed to find a config file in internal storage or in the blastem APK\n");
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162 //this will never get reached, but the compiler doesn't know that. Let's make it happy
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163 return NULL;
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164 }
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165
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166 #else
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167
496
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168 tern_node * load_config()
430
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169 {
496
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170 char * exe_dir;
742
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171 char * home = get_home_dir();
859
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172 if (home) {
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173 char * path = alloc_concat(home, "/.config/blastem/blastem.cfg");
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174 tern_node * ret = parse_config_file(path);
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175 free(path);
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176 if (ret) {
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177 return ret;
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178 }
430
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179 }
859
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180
496
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181 exe_dir = get_exe_dir();
859
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182 if (exe_dir) {
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183 path = alloc_concat(exe_dir, "/default.cfg");
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184 ret = parse_config_file(path);
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185 free(path);
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186 if (ret) {
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187 return ret;
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188 }
430
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189 }
859
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190
792
724bbec47f86 Use a new fatal_error function instead of calling fprintf and exit for fatal errors. This new function more gracefully handles the case in which BlastEm was not started from a terminal or disconnected from ther terminal (Windows).
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191 fatal_error("Failed to find a config file in ~/.config/blastem/blastem.cfg or in the blastem executable directory\n");
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192 //this will never get reached, but the compiler doesn't know that. Let's make it happy
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193 return NULL;
430
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194 }
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195
859
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196 #endif
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197