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Get tessdata prefix from executable path (only for Windows)

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Signed-off-by: Stefan Weil <sw@weilnetz.de>
This commit is contained in:
Stefan Weil 2015-12-11 10:06:21 +01:00
parent d4e0c6459a
commit 450efa68cd
1 changed files with 22 additions and 8 deletions
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30
ccutil/mainblk.cpp
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@ -1,8 +1,8 @@
/**********************************************************************
* 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
* 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");
@ -47,26 +47,40 @@ namespace tesseract {
* @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 sucessul - use current directory.
* 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) {
/* 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 {
if (getenv("TESSDATA_PREFIX")) {
datadir = getenv("TESSDATA_PREFIX");
} else {
#ifdef TESSDATA_PREFIX
/* 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: