/********************************************************************** * File: mainblk.c (Formerly main.c) * Description: Function to call from main() to setup. * Author: Ray Smith * Created: Tue Oct 22 11:09:40 BST 1991 * * (C) Copyright 1991, Hewlett-Packard Ltd. ** Licensed under the Apache License, Version 2.0 (the "License"); ** you may not use this file except in compliance with the License. ** You may obtain a copy of the License at ** http://www.apache.org/licenses/LICENSE-2.0 ** Unless required by applicable law or agreed to in writing, software ** distributed under the License is distributed on an "AS IS" BASIS, ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. ** See the License for the specific language governing permissions and ** limitations under the License. * **********************************************************************/ #include "fileerr.h" #ifdef __UNIX__ #include #include #else #include #endif #include #include "ccutil.h" #define VARDIR "configs/" /**< variables files */ #define EXTERN const ERRCODE NO_PATH = "Warning:explicit path for executable will not be used for configs"; static const ERRCODE USAGE = "Usage"; namespace tesseract { /********************************************************************** * main_setup * * Main for mithras demo program. Read the arguments and set up globals. **********************************************************************/ /** * @brief CCUtil::main_setup - set location of tessdata and name of image * * @param argv0 - paths to the directory with language files and config files. * An actual value of argv0 is used if not NULL, otherwise TESSDATA_PREFIX is * used if not NULL, next try to use compiled in -DTESSDATA_PREFIX. If previous * is not successful - use current directory. * @param basename - name of image */ void CCUtil::main_setup(const char *argv0, const char *basename) { imagebasename = basename; /**< name of image */ char *tessdata_prefix = getenv("TESSDATA_PREFIX"); if (argv0 != NULL && *argv0 != '\0') { /* Use tessdata prefix from the command line. */ datadir = argv0; } else if (tessdata_prefix) { /* Use tessdata prefix from the environment. */ datadir = tessdata_prefix; #if defined(_WIN32) } else if (datadir == NULL || access(datadir.string(), 0) != 0) { /* Look for tessdata in directory of executable. */ static char dir[128]; static char exe[128]; DWORD length = GetModuleFileName(NULL, exe, sizeof(exe)); if (length > 0 && length < sizeof(exe)) { _splitpath(exe, NULL, dir, NULL, NULL); datadir = dir; } #endif /* _WIN32 */ #if defined(TESSDATA_PREFIX) } else { /* Use tessdata prefix which was compiled in. */ #define _STR(a) #a #define _XSTR(a) _STR(a) datadir = _XSTR(TESSDATA_PREFIX); #undef _XSTR #undef _STR #endif } // datadir may still be empty: if (datadir.length() == 0) { datadir = "./"; } else { // Remove tessdata from the end if present, as we will add it back! int length = datadir.length(); if (length >= 8 && strcmp(&datadir[length - 8], "tessdata") == 0) datadir.truncate_at(length - 8); else if (length >= 9 && strcmp(&datadir[length - 9], "tessdata/") == 0) datadir.truncate_at(length - 9); } // check for missing directory separator const char *lastchar = datadir.string(); lastchar += datadir.length() - 1; if ((strcmp(lastchar, "/") != 0) && (strcmp(lastchar, "\\") != 0)) datadir += "/"; datadir += m_data_sub_dir; /**< data directory */ } } // namespace tesseract