script_scanner.cpp

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00001 /* $Id: script_scanner.cpp 17693 2009-10-04 17:16:41Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #include "../stdafx.h"
00013 #include "../string_func.h"
00014 #include "../fileio_func.h"
00015 #include <sys/stat.h>
00016 
00017 #include <squirrel.h>
00018 #include "../script/squirrel.hpp"
00019 #include "script_scanner.hpp"
00020 
00021 void ScriptScanner::ScanDir(const char *dirname, const char *info_file_name)
00022 {
00023   extern bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb);
00024   extern bool FiosIsHiddenFile(const struct dirent *ent);
00025 
00026   char d_name[MAX_PATH];
00027   char temp_script[1024];
00028   struct stat sb;
00029   struct dirent *dirent;
00030   DIR *dir;
00031 
00032   dir = ttd_opendir(dirname);
00033   /* Dir not found, so do nothing */
00034   if (dir == NULL) return;
00035 
00036   /* Walk all dirs trying to find a dir in which 'main.nut' exists */
00037   while ((dirent = readdir(dir)) != NULL) {
00038     ttd_strlcpy(d_name, FS2OTTD(dirent->d_name), sizeof(d_name));
00039 
00040     /* Valid file, not '.' or '..', not hidden */
00041     if (!FiosIsValidFile(dirname, dirent, &sb)) continue;
00042     if (strcmp(d_name, ".") == 0 || strcmp(d_name, "..") == 0) continue;
00043     if (FiosIsHiddenFile(dirent) && strncasecmp(d_name, PERSONAL_DIR, strlen(d_name)) != 0) continue;
00044 
00045     /* Create the full length dirname */
00046     ttd_strlcpy(temp_script, dirname, sizeof(temp_script));
00047     ttd_strlcat(temp_script, d_name,  sizeof(temp_script));
00048 
00049     if (S_ISREG(sb.st_mode)) {
00050       /* Only .tar files are allowed */
00051       char *ext = strrchr(d_name, '.');
00052       if (ext == NULL || strcasecmp(ext, ".tar") != 0) continue;
00053 
00054       /* We always expect a directory in the TAR */
00055       const char *first_dir = FioTarFirstDir(temp_script);
00056       if (first_dir == NULL) continue;
00057 
00058       ttd_strlcat(temp_script, PATHSEP, sizeof(temp_script));
00059       ttd_strlcat(temp_script, first_dir, sizeof(temp_script));
00060       FioTarAddLink(temp_script, first_dir);
00061     } else if (!S_ISDIR(sb.st_mode)) {
00062       /* Skip any other type of file */
00063       continue;
00064     }
00065 
00066     /* Add an additional / where needed */
00067     if (temp_script[strlen(temp_script) - 1] != PATHSEPCHAR) ttd_strlcat(temp_script, PATHSEP, sizeof(temp_script));
00068 
00069     char info_script[MAX_PATH];
00070     ttd_strlcpy(info_script, temp_script, sizeof(info_script));
00071     ttd_strlcpy(main_script, temp_script, sizeof(main_script));
00072 
00073     /* Every script should contain an 'info.nut' and 'main.nut' file; else it is not a valid script */
00074     ttd_strlcat(info_script, info_file_name, sizeof(info_script));
00075     ttd_strlcat(main_script, "main.nut", sizeof(main_script));
00076     if (!FioCheckFileExists(info_script, NO_DIRECTORY) || !FioCheckFileExists(main_script, NO_DIRECTORY)) continue;
00077 
00078     /* We don't care if one of the other scripts failed to load. */
00079     this->engine->ResetCrashed();
00080     this->engine->LoadScript(info_script);
00081   }
00082   closedir(dir);
00083 }
00084 
00085 void ScriptScanner::ScanScriptDir(const char *info_file_name, Subdirectory search_dir)
00086 {
00087   char buf[MAX_PATH];
00088   Searchpath sp;
00089 
00090   extern void ScanForTarFiles();
00091   ScanForTarFiles();
00092 
00093   FOR_ALL_SEARCHPATHS(sp) {
00094     FioAppendDirectory(buf, MAX_PATH, sp, search_dir);
00095     if (FileExists(buf)) this->ScanDir(buf, info_file_name);
00096   }
00097 }
00098 
00099 ScriptScanner::ScriptScanner()
00100 {
00101   this->engine = new Squirrel();
00102   this->main_script[0] = '\0';
00103 
00104   /* Mark this class as global pointer */
00105   this->engine->SetGlobalPointer(this);
00106 }
00107 
00108 ScriptScanner::~ScriptScanner()
00109 {
00110   delete this->engine;
00111 }

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