1 /******************************************************************************
2 * Copyright (C) 2009, International Business Machines
3 * Corporation and others. All Rights Reserved.
4 *******************************************************************************
5 */
6
7 #include "filetools.h"
8 #include "filestrm.h"
9 #include "cstring.h"
10 #include "unicode/putil.h"
11
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <sys/stat.h>
15 #include <time.h>
16 #include <string.h>
17
18 #if U_HAVE_DIRENT_H
19 #include <dirent.h>
20 typedef struct dirent DIRENT;
21
22 #define MAX_PATH_SIZE 4096 /* Set the limit for the size of the path. */
23
24 #define SKIP1 "."
25 #define SKIP2 ".."
26 #endif
27
28 static int32_t whichFileModTimeIsLater(const char *file1, const char *file2);
29
30 /*
31 * Goes through the given directory recursive to compare each file's modification time with that of the file given.
32 * Also can be given just one file to check against. Default value for isDir is FALSE.
33 */
34 U_CAPI UBool U_EXPORT2
isFileModTimeLater(const char * filePath,const char * checkAgainst,UBool isDir)35 isFileModTimeLater(const char *filePath, const char *checkAgainst, UBool isDir) {
36 UBool isLatest = TRUE;
37
38 if (filePath == NULL || checkAgainst == NULL) {
39 return FALSE;
40 }
41
42 if (isDir == TRUE) {
43 #if U_HAVE_DIRENT_H
44 DIR *pDir = NULL;
45 if ((pDir= opendir(checkAgainst)) != NULL) {
46 DIR *subDirp = NULL;
47 DIRENT *dirEntry = NULL;
48
49 while ((dirEntry = readdir(pDir)) != NULL) {
50 if (uprv_strcmp(dirEntry->d_name, SKIP1) != 0 && uprv_strcmp(dirEntry->d_name, SKIP2) != 0) {
51 char newpath[MAX_PATH_SIZE] = "";
52 uprv_strcpy(newpath, checkAgainst);
53 uprv_strcat(newpath, U_FILE_SEP_STRING);
54 uprv_strcat(newpath, dirEntry->d_name);
55
56 if ((subDirp = opendir(newpath)) != NULL) {
57 /* If this new path is a directory, make a recursive call with the newpath. */
58 closedir(subDirp);
59 isLatest = isFileModTimeLater(filePath, newpath, isDir);
60 if (!isLatest) {
61 break;
62 }
63 } else {
64 int32_t latest = whichFileModTimeIsLater(filePath, newpath);
65 if (latest < 0 || latest == 2) {
66 isLatest = FALSE;
67 break;
68 }
69 }
70
71 }
72 }
73 closedir(pDir);
74 } else {
75 fprintf(stderr, "Unable to open directory: %s\n", checkAgainst);
76 return FALSE;
77 }
78 #endif
79 } else {
80 if (T_FileStream_file_exists(checkAgainst)) {
81 int32_t latest = whichFileModTimeIsLater(filePath, checkAgainst);
82 if (latest < 0 || latest == 2) {
83 isLatest = FALSE;
84 }
85 } else {
86 isLatest = FALSE;
87 }
88 }
89
90 return isLatest;
91 }
92
93 /* Compares the mod time of both files returning a number indicating which one is later. -1 if error ocurs. */
whichFileModTimeIsLater(const char * file1,const char * file2)94 static int32_t whichFileModTimeIsLater(const char *file1, const char *file2) {
95 int32_t result = 0;
96 struct stat stbuf1, stbuf2;
97
98 if (stat(file1, &stbuf1) == 0 && stat(file2, &stbuf2) == 0) {
99 time_t modtime1, modtime2;
100 double diff;
101
102 modtime1 = stbuf1.st_mtime;
103 modtime2 = stbuf2.st_mtime;
104
105 diff = difftime(modtime1, modtime2);
106 if (diff < 0.0) {
107 result = 2;
108 } else if (diff > 0.0) {
109 result = 1;
110 }
111
112 } else {
113 fprintf(stderr, "Unable to get stats from file: %s or %s\n", file1, file2);
114 result = -1;
115 }
116
117 return result;
118 }
119
120 /* Swap the file separater character given with the new one in the file path. */
121 U_CAPI void U_EXPORT2
swapFileSepChar(char * filePath,const char oldFileSepChar,const char newFileSepChar)122 swapFileSepChar(char *filePath, const char oldFileSepChar, const char newFileSepChar) {
123 for (int32_t i = 0, length = uprv_strlen(filePath); i < length; i++) {
124 filePath[i] = (filePath[i] == oldFileSepChar ) ? newFileSepChar : filePath[i];
125 }
126 }
127