1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/Alc/alcConfig.c	Tue Oct 25 13:02:31 2011 -0700
     1.3 @@ -0,0 +1,342 @@
     1.4 +/**
     1.5 + * OpenAL cross platform audio library
     1.6 + * Copyright (C) 1999-2007 by authors.
     1.7 + * This library is free software; you can redistribute it and/or
     1.8 + *  modify it under the terms of the GNU Library General Public
     1.9 + *  License as published by the Free Software Foundation; either
    1.10 + *  version 2 of the License, or (at your option) any later version.
    1.11 + *
    1.12 + * This library is distributed in the hope that it will be useful,
    1.13 + *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.14 + *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    1.15 + *  Library General Public License for more details.
    1.16 + *
    1.17 + * You should have received a copy of the GNU Library General Public
    1.18 + *  License along with this library; if not, write to the
    1.19 + *  Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    1.20 + *  Boston, MA  02111-1307, USA.
    1.21 + * Or go to http://www.gnu.org/copyleft/lgpl.html
    1.22 + */
    1.23 +
    1.24 +#ifdef _WIN32
    1.25 +#ifdef __MINGW64__
    1.26 +#define _WIN32_IE 0x501
    1.27 +#else
    1.28 +#define _WIN32_IE 0x400
    1.29 +#endif
    1.30 +#endif
    1.31 +
    1.32 +#include "config.h"
    1.33 +
    1.34 +#include <stdlib.h>
    1.35 +#include <stdio.h>
    1.36 +#include <ctype.h>
    1.37 +#include <string.h>
    1.38 +
    1.39 +#include "alMain.h"
    1.40 +
    1.41 +#ifdef _WIN32_IE
    1.42 +#include <shlobj.h>
    1.43 +#endif
    1.44 +
    1.45 +typedef struct ConfigEntry {
    1.46 +    char *key;
    1.47 +    char *value;
    1.48 +} ConfigEntry;
    1.49 +
    1.50 +typedef struct ConfigBlock {
    1.51 +    char *name;
    1.52 +    ConfigEntry *entries;
    1.53 +    size_t entryCount;
    1.54 +} ConfigBlock;
    1.55 +
    1.56 +static ConfigBlock *cfgBlocks;
    1.57 +static size_t cfgCount;
    1.58 +
    1.59 +static char buffer[1024];
    1.60 +
    1.61 +static void LoadConfigFromFile(FILE *f)
    1.62 +{
    1.63 +    ConfigBlock *curBlock = cfgBlocks;
    1.64 +    ConfigEntry *ent;
    1.65 +
    1.66 +    while(fgets(buffer, sizeof(buffer), f))
    1.67 +    {
    1.68 +        size_t i = 0;
    1.69 +
    1.70 +        while(isspace(buffer[i]))
    1.71 +            i++;
    1.72 +        if(!buffer[i] || buffer[i] == '#')
    1.73 +            continue;
    1.74 +
    1.75 +        memmove(buffer, buffer+i, strlen(buffer+i)+1);
    1.76 +
    1.77 +        if(buffer[0] == '[')
    1.78 +        {
    1.79 +            ConfigBlock *nextBlock;
    1.80 +
    1.81 +            i = 1;
    1.82 +            while(buffer[i] && buffer[i] != ']')
    1.83 +                i++;
    1.84 +
    1.85 +            if(!buffer[i])
    1.86 +            {
    1.87 +                 ERR("config parse error: bad line \"%s\"\n", buffer);
    1.88 +                 continue;
    1.89 +            }
    1.90 +            buffer[i] = 0;
    1.91 +
    1.92 +            do {
    1.93 +                i++;
    1.94 +                if(buffer[i] && !isspace(buffer[i]))
    1.95 +                {
    1.96 +                    if(buffer[i] != '#')
    1.97 +                        WARN("config warning: extra data after block: \"%s\"\n", buffer+i);
    1.98 +                    break;
    1.99 +                }
   1.100 +            } while(buffer[i]);
   1.101 +
   1.102 +            nextBlock = NULL;
   1.103 +            for(i = 0;i < cfgCount;i++)
   1.104 +            {
   1.105 +                if(strcasecmp(cfgBlocks[i].name, buffer+1) == 0)
   1.106 +                {
   1.107 +                    nextBlock = cfgBlocks+i;
   1.108 +                    TRACE("found block '%s'\n", nextBlock->name);
   1.109 +                    break;
   1.110 +                }
   1.111 +            }
   1.112 +
   1.113 +            if(!nextBlock)
   1.114 +            {
   1.115 +                nextBlock = realloc(cfgBlocks, (cfgCount+1)*sizeof(ConfigBlock));
   1.116 +                if(!nextBlock)
   1.117 +                {
   1.118 +                     ERR("config parse error: error reallocating config blocks\n");
   1.119 +                     continue;
   1.120 +                }
   1.121 +                cfgBlocks = nextBlock;
   1.122 +                nextBlock = cfgBlocks+cfgCount;
   1.123 +                cfgCount++;
   1.124 +
   1.125 +                nextBlock->name = strdup(buffer+1);
   1.126 +                nextBlock->entries = NULL;
   1.127 +                nextBlock->entryCount = 0;
   1.128 +
   1.129 +                TRACE("found new block '%s'\n", nextBlock->name);
   1.130 +            }
   1.131 +            curBlock = nextBlock;
   1.132 +            continue;
   1.133 +        }
   1.134 +
   1.135 +        /* Look for the option name */
   1.136 +        i = 0;
   1.137 +        while(buffer[i] && buffer[i] != '#' && buffer[i] != '=' &&
   1.138 +              !isspace(buffer[i]))
   1.139 +            i++;
   1.140 +
   1.141 +        if(!buffer[i] || buffer[i] == '#' || i == 0)
   1.142 +        {
   1.143 +            ERR("config parse error: malformed option line: \"%s\"\n", buffer);
   1.144 +            continue;
   1.145 +        }
   1.146 +
   1.147 +        /* Seperate the option */
   1.148 +        if(buffer[i] != '=')
   1.149 +        {
   1.150 +            buffer[i++] = 0;
   1.151 +
   1.152 +            while(isspace(buffer[i]))
   1.153 +                i++;
   1.154 +            if(buffer[i] != '=')
   1.155 +            {
   1.156 +                ERR("config parse error: option without a value: \"%s\"\n", buffer);
   1.157 +                continue;
   1.158 +            }
   1.159 +        }
   1.160 +        /* Find the start of the value */
   1.161 +        buffer[i++] = 0;
   1.162 +        while(isspace(buffer[i]))
   1.163 +            i++;
   1.164 +
   1.165 +        /* Check if we already have this option set */
   1.166 +        ent = curBlock->entries;
   1.167 +        while((size_t)(ent-curBlock->entries) < curBlock->entryCount)
   1.168 +        {
   1.169 +            if(strcasecmp(ent->key, buffer) == 0)
   1.170 +                break;
   1.171 +            ent++;
   1.172 +        }
   1.173 +
   1.174 +        if((size_t)(ent-curBlock->entries) >= curBlock->entryCount)
   1.175 +        {
   1.176 +            /* Allocate a new option entry */
   1.177 +            ent = realloc(curBlock->entries, (curBlock->entryCount+1)*sizeof(ConfigEntry));
   1.178 +            if(!ent)
   1.179 +            {
   1.180 +                 ERR("config parse error: error reallocating config entries\n");
   1.181 +                 continue;
   1.182 +            }
   1.183 +            curBlock->entries = ent;
   1.184 +            ent = curBlock->entries + curBlock->entryCount;
   1.185 +            curBlock->entryCount++;
   1.186 +
   1.187 +            ent->key = strdup(buffer);
   1.188 +            ent->value = NULL;
   1.189 +        }
   1.190 +
   1.191 +        /* Look for the end of the line (Null term, new-line, or #-symbol) and
   1.192 +           eat up the trailing whitespace */
   1.193 +        memmove(buffer, buffer+i, strlen(buffer+i)+1);
   1.194 +
   1.195 +        i = 0;
   1.196 +        while(buffer[i] && buffer[i] != '#' && buffer[i] != '\n')
   1.197 +            i++;
   1.198 +        do {
   1.199 +            i--;
   1.200 +        } while(isspace(buffer[i]));
   1.201 +        buffer[++i] = 0;
   1.202 +
   1.203 +        free(ent->value);
   1.204 +        ent->value = strdup(buffer);
   1.205 +
   1.206 +        TRACE("found '%s' = '%s'\n", ent->key, ent->value);
   1.207 +    }
   1.208 +}
   1.209 +
   1.210 +void ReadALConfig(void)
   1.211 +{
   1.212 +    const char *str;
   1.213 +    FILE *f;
   1.214 +
   1.215 +    cfgBlocks = calloc(1, sizeof(ConfigBlock));
   1.216 +    cfgBlocks->name = strdup("general");
   1.217 +    cfgCount = 1;
   1.218 +
   1.219 +#ifdef _WIN32
   1.220 +    if(SHGetSpecialFolderPathA(NULL, buffer, CSIDL_APPDATA, FALSE) != FALSE)
   1.221 +    {
   1.222 +        size_t p = strlen(buffer);
   1.223 +        snprintf(buffer+p, sizeof(buffer)-p, "\\alsoft.ini");
   1.224 +        f = fopen(buffer, "rt");
   1.225 +        if(f)
   1.226 +        {
   1.227 +            LoadConfigFromFile(f);
   1.228 +            fclose(f);
   1.229 +        }
   1.230 +    }
   1.231 +#else
   1.232 +    f = fopen("/etc/openal/alsoft.conf", "r");
   1.233 +    if(f)
   1.234 +    {
   1.235 +        LoadConfigFromFile(f);
   1.236 +        fclose(f);
   1.237 +    }
   1.238 +    if((str=getenv("HOME")) != NULL && *str)
   1.239 +    {
   1.240 +        snprintf(buffer, sizeof(buffer), "%s/.alsoftrc", str);
   1.241 +        f = fopen(buffer, "r");
   1.242 +        if(f)
   1.243 +        {
   1.244 +            LoadConfigFromFile(f);
   1.245 +            fclose(f);
   1.246 +        }
   1.247 +    }
   1.248 +#endif
   1.249 +    if((str=getenv("ALSOFT_CONF")) != NULL && *str)
   1.250 +    {
   1.251 +        f = fopen(str, "r");
   1.252 +        if(f)
   1.253 +        {
   1.254 +            LoadConfigFromFile(f);
   1.255 +            fclose(f);
   1.256 +        }
   1.257 +    }
   1.258 +}
   1.259 +
   1.260 +void FreeALConfig(void)
   1.261 +{
   1.262 +    size_t i;
   1.263 +
   1.264 +    for(i = 0;i < cfgCount;i++)
   1.265 +    {
   1.266 +        size_t j;
   1.267 +        for(j = 0;j < cfgBlocks[i].entryCount;j++)
   1.268 +        {
   1.269 +           free(cfgBlocks[i].entries[j].key);
   1.270 +           free(cfgBlocks[i].entries[j].value);
   1.271 +        }
   1.272 +        free(cfgBlocks[i].entries);
   1.273 +        free(cfgBlocks[i].name);
   1.274 +    }
   1.275 +    free(cfgBlocks);
   1.276 +    cfgBlocks = NULL;
   1.277 +    cfgCount = 0;
   1.278 +}
   1.279 +
   1.280 +const char *GetConfigValue(const char *blockName, const char *keyName, const char *def)
   1.281 +{
   1.282 +    size_t i, j;
   1.283 +
   1.284 +    if(!keyName)
   1.285 +        return def;
   1.286 +
   1.287 +    if(!blockName)
   1.288 +        blockName = "general";
   1.289 +
   1.290 +    for(i = 0;i < cfgCount;i++)
   1.291 +    {
   1.292 +        if(strcasecmp(cfgBlocks[i].name, blockName) != 0)
   1.293 +            continue;
   1.294 +
   1.295 +        for(j = 0;j < cfgBlocks[i].entryCount;j++)
   1.296 +        {
   1.297 +            if(strcasecmp(cfgBlocks[i].entries[j].key, keyName) == 0)
   1.298 +            {
   1.299 +                TRACE("Found %s:%s = \"%s\"\n", blockName, keyName,
   1.300 +                      cfgBlocks[i].entries[j].value);
   1.301 +                if(cfgBlocks[i].entries[j].value[0])
   1.302 +                    return cfgBlocks[i].entries[j].value;
   1.303 +                return def;
   1.304 +            }
   1.305 +        }
   1.306 +    }
   1.307 +
   1.308 +    TRACE("Key %s:%s not found\n", blockName, keyName);
   1.309 +    return def;
   1.310 +}
   1.311 +
   1.312 +int ConfigValueExists(const char *blockName, const char *keyName)
   1.313 +{
   1.314 +    const char *val = GetConfigValue(blockName, keyName, "");
   1.315 +    return !!val[0];
   1.316 +}
   1.317 +
   1.318 +int GetConfigValueInt(const char *blockName, const char *keyName, int def)
   1.319 +{
   1.320 +    const char *val = GetConfigValue(blockName, keyName, "");
   1.321 +
   1.322 +    if(!val[0]) return def;
   1.323 +    return strtol(val, NULL, 0);
   1.324 +}
   1.325 +
   1.326 +float GetConfigValueFloat(const char *blockName, const char *keyName, float def)
   1.327 +{
   1.328 +    const char *val = GetConfigValue(blockName, keyName, "");
   1.329 +
   1.330 +    if(!val[0]) return def;
   1.331 +#ifdef HAVE_STRTOF
   1.332 +    return strtof(val, NULL);
   1.333 +#else
   1.334 +    return (float)strtod(val, NULL);
   1.335 +#endif
   1.336 +}
   1.337 +
   1.338 +int GetConfigValueBool(const char *blockName, const char *keyName, int def)
   1.339 +{
   1.340 +    const char *val = GetConfigValue(blockName, keyName, "");
   1.341 +
   1.342 +    if(!val[0]) return !!def;
   1.343 +    return (strcasecmp(val, "true") == 0 || strcasecmp(val, "yes") == 0 ||
   1.344 +            strcasecmp(val, "on") == 0 || atoi(val) != 0);
   1.345 +}