Mercurial > repos > blastem

annotate config.c @ 622:b76d2a628ab9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though
author Michael Pavone <pavone@retrodev.com>
date Tue, 17 Jun 2014 19:01:01 -0700
parents 6fc71114d145
children 80a67be1770b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
467
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents: 431
diff changeset
1 /*
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents: 431
diff changeset
2 Copyright 2013 Michael Pavone
495
39cad98d2789 Allow OpenGL support to be disabled at compile time. Move generic utility functions out of config.c
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
3 This file is part of BlastEm.
467
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
Mike Pavone <pavone@retrodev.com>
parents: 431
diff changeset
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
Mike Pavone <pavone@retrodev.com>
parents: 431
diff changeset
5 */
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
6 #include "tern.h"
495
39cad98d2789 Allow OpenGL support to be disabled at compile time. Move generic utility functions out of config.c
Mike Pavone <pavone@retrodev.com>
parents: 467
diff changeset
7 #include "util.h"
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
8 #include <stdio.h>
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
9 #include <stdlib.h>
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
10 #include <string.h>
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
11
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
12 #define MAX_NEST 30 //way more than I'll ever need
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
13
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
14 tern_node * parse_config(char * config_data)
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
15 {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
16 char *state, *curline;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
17 char *prefix = NULL;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
18 int nest_level = 0;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
19 char * prefix_parts[MAX_NEST];
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
20 int line = 1;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
21 tern_node * head = NULL;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
22 while ((curline = strtok_r(config_data, "\n", &state)))
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
23 {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
24 config_data = NULL;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
25 curline = strip_ws(curline);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
26 int len = strlen(curline);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
27 if (!len) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
28 continue;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
29 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
30 if (curline[0] == '#') {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
31 continue;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
32 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
33 if (curline[0] == '}') {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
34 if (!nest_level) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
35 fprintf(stderr, "unexpected } on line %d\n", line);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
36 exit(1);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
37 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
38 if (prefix) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
39 free(prefix);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
40 prefix = NULL;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
41 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
42 nest_level--;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
43 curline = strip_ws(curline+1);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
44 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
45 char * end = curline + len - 1;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
46 if (*end == '{') {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
47 *end = 0;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
48 curline = strip_ws(curline);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
49 prefix_parts[nest_level++] = curline;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
50 if (prefix) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
51 free(prefix);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
52 prefix = NULL;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
53 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
54 } else {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
55 if (nest_level && !prefix) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
56 prefix = alloc_concat_m(nest_level, prefix_parts);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
57 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
58 char * val = strip_ws(split_keyval(curline));
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
59 char * key = curline;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
60 if (*key) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
61 if (prefix) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
62 key = alloc_concat(prefix, key);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
63 }
431
440efd7d27a9 Read key bindings from config file
Mike Pavone <pavone@retrodev.com>
parents: 430
diff changeset
64 head = tern_insert_ptr(head, key, strdup(val));
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
65 if (prefix) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
66 free(key);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
67 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
68 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
69 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
70 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
71 if (prefix) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
72 free(prefix);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
73 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
74 return head;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
75 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
76
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
77 tern_node * parse_config_file(char * config_path)
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
78 {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
79 tern_node * ret = NULL;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
80 FILE * config_file = fopen(config_path, "r");
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
81 if (!config_file) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
82 goto open_fail;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
83 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
84 long config_size = file_size(config_file);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
85 if (!config_size) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
86 goto config_empty;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
87 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
88 char * config_data = malloc(config_size);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
89 if (fread(config_data, 1, config_size, config_file) != config_size) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
90 goto config_read_fail;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
91 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
92 ret = parse_config(config_data);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
93 config_read_fail:
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
94 free(config_data);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
95 config_empty:
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
96 fclose(config_file);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
97 open_fail:
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
98 return ret;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
99 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
100
496
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
101 tern_node * load_config()
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
102 {
496
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
103 char * exe_dir;
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
104 char * home = getenv("HOME");
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
105 if (!home) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
106 goto load_in_app_dir;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
107 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
108 char * path = alloc_concat(home, "/.config/blastem/blastem.cfg");
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
109 tern_node * ret = parse_config_file(path);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
110 if (ret) {
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
111 goto success;
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
112 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
113 free(path);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
114 load_in_app_dir:
496
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
115 exe_dir = get_exe_dir();
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
116 if (!exe_dir) {
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
117 goto no_config;
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
118 }
496
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
119 path = alloc_concat(exe_dir, "/default.cfg");
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
120 ret = parse_config_file(path);
496
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
121 free(path);
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
122 success:
496
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
123 if (ret) {
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
124 return ret;
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
125 }
496
6fc71114d145 Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents: 495
diff changeset
126 no_config:
430
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
127 fputs("Failed to find a config file in ~/.config/blastem/blastem.cfg or in the blastem executable directory\n", stderr);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
128 exit(1);
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
129 }
7f84090ab1cd Add config file parser and default config file
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
130