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dpavlin |
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/* |
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* HT Editor |
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* configfile.cc |
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* |
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* Copyright (C) 1999-2002 Stefan Weyergraf |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*/ |
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#include <cstdlib> |
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#include <cstring> |
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// FIXME: needed for gAppFilename |
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#include "system/sys.h" |
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#include "cstream.h" |
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#include "configfile.h" |
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#include "tools/debug.h" |
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#include "tools/endianess.h" |
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#include "tools/except.h" |
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#include "tools/strtools.h" |
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/* VERSION 2 (for ht-0.4.4 and later) */ |
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/* NOTE: as of Version 2 ALL integers in HT config-files are |
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stored in big-endian (network-order, non-intel) format... */ |
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struct ConfigFileHeader { |
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char magic[4] PACKED; |
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char version[4] PACKED; |
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char type[2] PACKED; |
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}; |
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ObjectStream *createObjectStream(File *file, bool own_file, ConfigFileType type) |
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{ |
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switch (type) { |
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case CONFIGFILE_BIN: return new ObjectStreamBin(file, own_file); |
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case CONFIGFILE_TEXT: return new ObjectStreamText(file, own_file); |
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case CONFIGFILE_BIN_COMPRESSED: { |
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CompressedStream *cs = new CompressedStream(file, own_file); |
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return new ObjectStreamBin(cs, true); |
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} |
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default: return NULL; |
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} |
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} |
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static ObjectStream *createReadConfigFile(File *rfile, bool own_rfile, char magic[4], uint32 version) |
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{ |
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ConfigFileHeader header; |
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String filedesc; |
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rfile->getDesc(filedesc); |
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rfile->readx(&header, sizeof header); |
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// magic |
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if (memcmp(magic, header.magic, 4) != 0) throw MsgfException( |
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"Invalid config-file magic in '%y' (found '%c%c%c%c', expected '%c%c%c%c')", |
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&filedesc, header.magic[0], header.magic[1], header.magic[2], |
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header.magic[3], magic[0], magic[1], magic[2], magic[3]); |
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// version |
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uint16 read_version; |
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if (!hexw_ex(read_version, header.version)) throw MsgfException( |
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"Corrupted config-file header in'%y' (invalid version '%c%c%c%c', must be lowercase-hex)", |
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&filedesc, header.version[0], header.version[1], header.version[2], header.version[3]); |
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if (read_version != version) { |
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char *rela; |
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char *hint; |
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if (read_version < version) { |
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rela = "old"; |
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hint = "The file has probably been left over by an older version of the program. You might want to delete it."; |
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} else { |
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rela = "NEW"; |
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hint = "You're probably using an old version of the program. You might want to update."; |
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} |
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throw MsgfException( |
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"Config-file is too %s in '%y' (found version %d/0x%x, expected version %d/0x%x).\n%s", |
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rela, &filedesc, read_version, read_version, version, version, hint); |
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} |
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// type |
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uint8 read_type; |
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if (!hexb_ex(read_type, header.type)) throw MsgfException( |
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"Corrupted config-file header in'%y' (invalid type '%c%c', must be lowercase-hex)", |
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&filedesc, header.type[0], header.type[1]); |
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ObjectStream *o = createObjectStream(rfile, own_rfile, (ConfigFileType)read_type); |
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if (!o) throw MsgfException( |
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"Corrupted config-file in '%y' (invalid type %d/0x%x)", |
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&filedesc, read_type, read_type); |
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return o; |
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} |
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static ObjectStream *createWriteConfigFile(File *wfile, bool own_wfile, char magic[4], uint32 version, ConfigFileType type) |
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{ |
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ObjectStream *o = createObjectStream(wfile, own_wfile, type); |
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ConfigFileHeader header; |
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char scratch[16]; |
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// magic |
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memcpy(header.magic, magic, 4); |
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// version |
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sprintf(scratch, "%04x", version); |
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memcpy(header.version, scratch, 4); |
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// type |
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sprintf(scratch, "%02x", type); |
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memcpy(header.type, scratch, 2); |
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o->writex(&header, sizeof header); |
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if (type == CONFIGFILE_TEXT) { |
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o->writex((void*)"\n#\n#\tThis is a generated file!\n#\n", 33); |
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} |
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return o; |
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} |
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ConfigFileObjectStream::ConfigFileObjectStream(File *readable_file, bool own_rfile, char magic[4], uint32 version) |
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: ObjectStreamLayer(createReadConfigFile(readable_file, own_rfile, magic, version), true) |
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{ |
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ASSERT(readable_file->getAccessMode() & IOAM_READ); |
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} |
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ConfigFileObjectStream::ConfigFileObjectStream(File *writable_file, bool own_wfile, char magic[4], uint32 version, ConfigFileType type) |
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: ObjectStreamLayer(createWriteConfigFile(writable_file, own_wfile, magic, version, type), true) |
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{ |
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ASSERT(writable_file->getAccessMode() & IOAM_WRITE); |
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} |
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/* |
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* INIT |
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*/ |
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char *systemconfig_file; |
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bool initConfigFile() |
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{ |
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#if defined(MSDOS) || defined(DJGPP) || defined(WIN32) || defined(__WIN32__) |
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#define SYSTEM_CONFIG_FILE_NAME "ht.cfg" |
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char d[1024]; /* FIXME: !!!! */ |
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sys_dirname(d, gAppFilename); |
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char *b = "\\"SYSTEM_CONFIG_FILE_NAME; |
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systemconfig_file = (char*)malloc(strlen(d)+strlen(b)+1); |
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strcpy(systemconfig_file, d); |
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strcat(systemconfig_file, b); |
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#else |
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#define SYSTEM_CONFIG_FILE_NAME ".htcfg" |
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char *home = getenv("HOME"); |
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char *b = "/"SYSTEM_CONFIG_FILE_NAME; |
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if (!home) home = ""; |
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systemconfig_file = (char*)malloc(strlen(home)+strlen(b)+1); |
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strcpy(systemconfig_file, home); |
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strcat(systemconfig_file, b); |
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#endif |
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return true; |
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} |
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/* |
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* DONE |
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*/ |
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void doneConfigFile() |
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{ |
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free(systemconfig_file); |
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} |