1 /******************************************************************************
2 * Copyright (C) 2009-2011, 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 #include "putilimp.h"
12
13 #include <stdio.h>
14 #include <stdlib.h>
15 #include <sys/stat.h>
16 #include <time.h>
17 #include <string.h>
18
19 #if U_HAVE_DIRENT_H
20 #include <dirent.h>
21 typedef struct dirent DIRENT;
22
23 #define MAX_PATH_SIZE 4096 /* Set the limit for the size of the path. */
24
25 #define SKIP1 "."
26 #define SKIP2 ".."
27 #endif
28
29 static int32_t whichFileModTimeIsLater(const char *file1, const char *file2);
30
31 /*
32 * Goes through the given directory recursive to compare each file's modification time with that of the file given.
33 * Also can be given just one file to check against. Default value for isDir is FALSE.
34 */
35 U_CAPI UBool U_EXPORT2
isFileModTimeLater(const char * filePath,const char * checkAgainst,UBool isDir)36 isFileModTimeLater(const char *filePath, const char *checkAgainst, UBool isDir) {
37 UBool isLatest = TRUE;
38
39 if (filePath == NULL || checkAgainst == NULL) {
40 return FALSE;
41 }
42
43 if (isDir == TRUE) {
44 #if U_HAVE_DIRENT_H
45 DIR *pDir = NULL;
46 if ((pDir= opendir(checkAgainst)) != NULL) {
47 DIR *subDirp = NULL;
48 DIRENT *dirEntry = NULL;
49
50 while ((dirEntry = readdir(pDir)) != NULL) {
51 if (uprv_strcmp(dirEntry->d_name, SKIP1) != 0 && uprv_strcmp(dirEntry->d_name, SKIP2) != 0) {
52 char newpath[MAX_PATH_SIZE] = "";
53 uprv_strcpy(newpath, checkAgainst);
54 uprv_strcat(newpath, U_FILE_SEP_STRING);
55 uprv_strcat(newpath, dirEntry->d_name);
56
57 if ((subDirp = opendir(newpath)) != NULL) {
58 /* If this new path is a directory, make a recursive call with the newpath. */
59 closedir(subDirp);
60 isLatest = isFileModTimeLater(filePath, newpath, isDir);
61 if (!isLatest) {
62 break;
63 }
64 } else {
65 int32_t latest = whichFileModTimeIsLater(filePath, newpath);
66 if (latest < 0 || latest == 2) {
67 isLatest = FALSE;
68 break;
69 }
70 }
71
72 }
73 }
74 closedir(pDir);
75 } else {
76 fprintf(stderr, "Unable to open directory: %s\n", checkAgainst);
77 return FALSE;
78 }
79 #endif
80 } else {
81 if (T_FileStream_file_exists(checkAgainst)) {
82 int32_t latest = whichFileModTimeIsLater(filePath, checkAgainst);
83 if (latest < 0 || latest == 2) {
84 isLatest = FALSE;
85 }
86 } else {
87 isLatest = FALSE;
88 }
89 }
90
91 return isLatest;
92 }
93
94 /* 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)95 static int32_t whichFileModTimeIsLater(const char *file1, const char *file2) {
96 int32_t result = 0;
97 struct stat stbuf1, stbuf2;
98
99 if (stat(file1, &stbuf1) == 0 && stat(file2, &stbuf2) == 0) {
100 time_t modtime1, modtime2;
101 double diff;
102
103 modtime1 = stbuf1.st_mtime;
104 modtime2 = stbuf2.st_mtime;
105
106 diff = difftime(modtime1, modtime2);
107 if (diff < 0.0) {
108 result = 2;
109 } else if (diff > 0.0) {
110 result = 1;
111 }
112
113 } else {
114 fprintf(stderr, "Unable to get stats from file: %s or %s\n", file1, file2);
115 result = -1;
116 }
117
118 return result;
119 }
120
121 /* Swap the file separater character given with the new one in the file path. */
122 U_CAPI void U_EXPORT2
swapFileSepChar(char * filePath,const char oldFileSepChar,const char newFileSepChar)123 swapFileSepChar(char *filePath, const char oldFileSepChar, const char newFileSepChar) {
124 for (int32_t i = 0, length = uprv_strlen(filePath); i < length; i++) {
125 filePath[i] = (filePath[i] == oldFileSepChar ) ? newFileSepChar : filePath[i];
126 }
127 }
128