mirror of
https://github.com/tesseract-ocr/tesseract.git
synced 2024-12-28 02:58:17 +08:00
106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
/**********************************************************************
|
|
* File: mainblk.cpp (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 <unistd.h>
|
|
#include <signal.h>
|
|
#else
|
|
#include <io.h>
|
|
#endif
|
|
#include <stdlib.h>
|
|
#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 nullptr, otherwise TESSDATA_PREFIX is
|
|
* used if not nullptr, 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 != nullptr && *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 == nullptr || _access(datadir.string(), 0) != 0) {
|
|
/* Look for tessdata in directory of executable. */
|
|
char drive[_MAX_DRIVE];
|
|
char dir[_MAX_DIR];
|
|
char path[_MAX_PATH];
|
|
DWORD length = GetModuleFileName(nullptr, path, sizeof(path));
|
|
if (length > 0 && length < sizeof(path)) {
|
|
errno_t result = _splitpath_s(path, drive, sizeof(drive),
|
|
dir, sizeof(dir), nullptr, 0, nullptr, 0);
|
|
if (result == ERANGE) {
|
|
tprintf("Error: Path too long: %s\n", path);
|
|
}
|
|
|
|
datadir = drive;
|
|
datadir += dir;
|
|
datadir += "/tessdata";
|
|
}
|
|
#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) "/tessdata";
|
|
#undef _XSTR
|
|
#undef _STR
|
|
#endif
|
|
}
|
|
|
|
// datadir may still be empty:
|
|
if (datadir.length() == 0) {
|
|
datadir = "./";
|
|
}
|
|
|
|
// check for missing directory separator
|
|
const char *lastchar = datadir.string();
|
|
lastchar += datadir.length() - 1;
|
|
if ((strcmp(lastchar, "/") != 0) && (strcmp(lastchar, "\\") != 0))
|
|
datadir += "/";
|
|
}
|
|
} // namespace tesseract
|