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// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/******************************************************************************
* Copyright (C) 2009-2013, International Business Machines
* Corporation and others. All Rights Reserved.
*******************************************************************************
*/
#include "unicode/platform.h"
#if U_PLATFORM == U_PF_MINGW
// *cough* - for struct stat
#ifdef __STRICT_ANSI__
#undef __STRICT_ANSI__
#endif
#endif
#include "filetools.h"
#include "filestrm.h"
#include "charstr.h"
#include "cstring.h"
#include "unicode/putil.h"
#include "putilimp.h"
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <time.h>
#include <string.h>
#if U_HAVE_DIRENT_H
#include <dirent.h>
typedef struct dirent DIRENT;
#define SKIP1 "."
#define SKIP2 ".."
#endif
static int32_t whichFileModTimeIsLater(const char *file1, const char *file2);
/*
* Goes through the given directory recursive to compare each file's modification time with that of the file given.
* Also can be given just one file to check against. Default value for isDir is false.
*/
U_CAPI UBool U_EXPORT2
isFileModTimeLater(const char *filePath, const char *checkAgainst, UBool isDir) {
UBool isLatest = true;
if (filePath == nullptr || checkAgainst == nullptr) {
return false;
}
if (isDir == true) {
#if U_HAVE_DIRENT_H
DIR *pDir = nullptr;
if ((pDir= opendir(checkAgainst)) != nullptr) {
DIR *subDirp = nullptr;
DIRENT *dirEntry = nullptr;
while ((dirEntry = readdir(pDir)) != nullptr) {
if (uprv_strcmp(dirEntry->d_name, SKIP1) != 0 && uprv_strcmp(dirEntry->d_name, SKIP2) != 0) {
UErrorCode status = U_ZERO_ERROR;
icu::CharString newpath(checkAgainst, -1, status);
newpath.append(U_FILE_SEP_STRING, -1, status);
newpath.append(dirEntry->d_name, -1, status);
if (U_FAILURE(status)) {
fprintf(stderr, "%s:%d: %s\n", __FILE__, __LINE__, u_errorName(status));
return false;
}
if ((subDirp = opendir(newpath.data())) != nullptr) {
/* If this new path is a directory, make a recursive call with the newpath. */
closedir(subDirp);
isLatest = isFileModTimeLater(filePath, newpath.data(), isDir);
if (!isLatest) {
break;
}
} else {
int32_t latest = whichFileModTimeIsLater(filePath, newpath.data());
if (latest < 0 || latest == 2) {
isLatest = false;
break;
}
}
}
}
closedir(pDir);
} else {
fprintf(stderr, "Unable to open directory: %s\n", checkAgainst);
return false;
}
#endif
} else {
if (T_FileStream_file_exists(checkAgainst)) {
int32_t latest = whichFileModTimeIsLater(filePath, checkAgainst);
if (latest < 0 || latest == 2) {
isLatest = false;
}
} else {
isLatest = false;
}
}
return isLatest;
}
/* Compares the mod time of both files returning a number indicating which one is later. -1 if error ocurs. */
static int32_t whichFileModTimeIsLater(const char *file1, const char *file2) {
int32_t result = 0;
struct stat stbuf1, stbuf2;
if (stat(file1, &stbuf1) == 0 && stat(file2, &stbuf2) == 0) {
time_t modtime1, modtime2;
double diff;
modtime1 = stbuf1.st_mtime;
modtime2 = stbuf2.st_mtime;
diff = difftime(modtime1, modtime2);
if (diff < 0.0) {
result = 2;
} else if (diff > 0.0) {
result = 1;
}
} else {
fprintf(stderr, "Unable to get stats from file: %s or %s\n", file1, file2);
result = -1;
}
return result;
}
/* Swap the file separater character given with the new one in the file path. */
U_CAPI void U_EXPORT2
swapFileSepChar(char *filePath, const char oldFileSepChar, const char newFileSepChar) {
for (int32_t i = 0, length = static_cast<int32_t>(uprv_strlen(filePath)); i < length; i++) {
filePath[i] = (filePath[i] == oldFileSepChar ) ? newFileSepChar : filePath[i];
}
}
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