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https://github.com/tesseract-ocr/tesseract.git
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d8b1456dd5
git-svn-id: https://tesseract-ocr.googlecode.com/svn/trunk@305 d0cd1f9f-072b-0410-8dd7-cf729c803f20
117 lines
4.0 KiB
C++
117 lines
4.0 KiB
C++
/**********************************************************************
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* File: basedir.c (Formerly getpath.c)
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* Description: Find the directory location of the current executable using PATH.
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* Author: Ray Smith
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* Created: Mon Jul 09 09:06:39 BST 1990
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*
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* (C) Copyright 1990, Hewlett-Packard Ltd.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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**********************************************************************/
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#include "mfcpch.h" //precompiled headers
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#include "strngs.h"
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#ifdef __UNIX__
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#include <unistd.h>
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#include <fcntl.h>
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#endif
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#include <stdlib.h>
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#include "basedir.h"
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#include "varable.h"
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#include "notdll.h" //must be last include
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#ifdef __MSW32__
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STRING_VAR(tessedit_module_name, "tessdll.dll",
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"Module colocated with tessdata dir");
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#endif
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/**********************************************************************
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* getpath
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*
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* Find the directory of the given executable using the usual path rules.
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* This enables data to be located relative to the code.
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**********************************************************************/
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DLLSYM inT8 getpath( //get dir name of code
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const char *code, //executable to locate
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STRING &path //output path name
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) {
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char directory[MAX_PATH]; //main directory
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#ifdef __UNIX__
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inT16 dirind; //index in directory
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register char *pathlist; //$PATH
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int fd; //file descriptor
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strcpy(directory, code); //get demo directory
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dirind = strlen (directory);
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while (dirind > 0 && directory[dirind - 1] != '/')
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dirind--; //look back for dirname
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directory[dirind] = '\0'; //end at directory
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if (dirind != 0) {
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path = directory; //had it in arg
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return 0;
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}
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pathlist = getenv ("PATH"); //find search path
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while (pathlist != NULL && *pathlist) {
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for (dirind = 0; *pathlist != '\0' && *pathlist != ':';)
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//copy a directory
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directory[dirind++] = *pathlist++;
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if (*pathlist == ':')
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pathlist++;
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if (dirind == 0)
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continue;
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if (directory[dirind - 1] != '/');
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directory[dirind++] = '/'; //add ending slash
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directory[dirind++] = '\0';
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path = directory; //try this path
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strcat(directory, code);
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fd = open (directory, 0);
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if (fd >= 0) {
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close(fd); //found it
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return 0;
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}
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}
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strcpy (directory, "./");
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path = directory; //in current?
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strcat(directory, code);
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fd = open (directory, 0);
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if (fd >= 0) {
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close(fd);
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return 0; //in current after all
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}
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return -1;
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#endif
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#ifdef __MSW32__
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char *path_end; //end of dir
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if (code == NULL) {
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// Attempt to get the path of the most relevant module. If the dll
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// is being used, this will be the dll. Otherwise GetModuleHandle will
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// return NULL and default to the path of the executable.
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if (GetModuleFileName(GetModuleHandle(tessedit_module_name.string()),
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directory, MAX_PATH - 1) == 0) {
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return -1;
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}
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} else {
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strncpy(directory, code, MAX_PATH - 1);
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}
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while ((path_end = strchr (directory, '\\')) != NULL)
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*path_end = '/';
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path_end = strrchr (directory, '/');
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if (path_end != NULL)
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path_end[1] = '\0';
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else
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strcpy (directory, "./");
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path = directory;
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return 0;
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#endif
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}
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