Mercurial > repos > blastem
view config.c @ 505:b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
author | Michael Pavone <pavone@retrodev.com> |
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date | Mon, 06 Jan 2014 22:54:05 -0800 |
parents | 6fc71114d145 |
children | 80a67be1770b |
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/* 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); }