Mercurial > repos > blastem
view config.c @ 620:9d6fed6501ba
Fix handling of code writes for Z80 core. This seems to get things close to being back to where they were before the big refactor that broke the Z80 core. Some problems remain. Notably the sound driver in Sonic 2 is still quite broken.
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Mon, 29 Dec 2014 23:08:39 -0800 |
parents | 6fc71114d145 |
children | 80a67be1770b |
line wrap: on
line source
/* Copyright 2013 Michael Pavone This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #include "tern.h" #include "util.h" #include <stdio.h> #include <stdlib.h> #include <string.h> #define MAX_NEST 30 //way more than I'll ever need tern_node * parse_config(char * config_data) { char *state, *curline; char *prefix = NULL; int nest_level = 0; char * prefix_parts[MAX_NEST]; int line = 1; tern_node * head = NULL; while ((curline = strtok_r(config_data, "\n", &state))) { config_data = NULL; curline = strip_ws(curline); int len = strlen(curline); if (!len) { continue; } if (curline[0] == '#') { continue; } if (curline[0] == '}') { if (!nest_level) { fprintf(stderr, "unexpected } on line %d\n", line); exit(1); } if (prefix) { free(prefix); prefix = NULL; } nest_level--; curline = strip_ws(curline+1); } char * end = curline + len - 1; if (*end == '{') { *end = 0; curline = strip_ws(curline); prefix_parts[nest_level++] = curline; if (prefix) { free(prefix); prefix = NULL; } } else { if (nest_level && !prefix) { prefix = alloc_concat_m(nest_level, prefix_parts); } char * val = strip_ws(split_keyval(curline)); char * key = curline; if (*key) { if (prefix) { key = alloc_concat(prefix, key); } head = tern_insert_ptr(head, key, strdup(val)); if (prefix) { free(key); } } } } if (prefix) { free(prefix); } return head; } tern_node * parse_config_file(char * config_path) { tern_node * ret = NULL; FILE * config_file = fopen(config_path, "r"); if (!config_file) { goto open_fail; } long config_size = file_size(config_file); if (!config_size) { goto config_empty; } char * config_data = malloc(config_size); if (fread(config_data, 1, config_size, config_file) != config_size) { goto config_read_fail; } ret = parse_config(config_data); config_read_fail: free(config_data); config_empty: fclose(config_file); open_fail: return ret; } tern_node * load_config() { char * exe_dir; char * home = getenv("HOME"); if (!home) { goto load_in_app_dir; } char * path = alloc_concat(home, "/.config/blastem/blastem.cfg"); tern_node * ret = parse_config_file(path); if (ret) { goto success; } free(path); load_in_app_dir: exe_dir = get_exe_dir(); if (!exe_dir) { goto no_config; } path = alloc_concat(exe_dir, "/default.cfg"); ret = parse_config_file(path); free(path); success: if (ret) { return ret; } no_config: fputs("Failed to find a config file in ~/.config/blastem/blastem.cfg or in the blastem executable directory\n", stderr); exit(1); }