1 /******************************************************************************
2 * Copyright (C) 2009-2013, International Business Machines
3 * Corporation and others. All Rights Reserved.
4 *******************************************************************************
5 */
6
7 #if U_PLATFORM == U_PF_MINGW
8 // *cough* - for struct stat
9 #ifdef __STRICT_ANSI__
10 #undef __STRICT_ANSI__
11 #endif
12 #endif
13
14 #include "filetools.h"
15 #include "filestrm.h"
16 #include "cstring.h"
17 #include "unicode/putil.h"
18 #include "putilimp.h"
19
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <sys/stat.h>
23 #include <time.h>
24 #include <string.h>
25
26 #if U_HAVE_DIRENT_H
27 #include <dirent.h>
28 typedef struct dirent DIRENT;
29
30 #define MAX_PATH_SIZE 4096 /* Set the limit for the size of the path. */
31
32 #define SKIP1 "."
33 #define SKIP2 ".."
34 #endif
35
36 static int32_t whichFileModTimeIsLater(const char *file1, const char *file2);
37
38 /*
39 * Goes through the given directory recursive to compare each file's modification time with that of the file given.
40 * Also can be given just one file to check against. Default value for isDir is FALSE.
41 */
42 U_CAPI UBool U_EXPORT2
isFileModTimeLater(const char * filePath,const char * checkAgainst,UBool isDir)43 isFileModTimeLater(const char *filePath, const char *checkAgainst, UBool isDir) {
44 UBool isLatest = TRUE;
45
46 if (filePath == NULL || checkAgainst == NULL) {
47 return FALSE;
48 }
49
50 if (isDir == TRUE) {
51 #if U_HAVE_DIRENT_H
52 DIR *pDir = NULL;
53 if ((pDir= opendir(checkAgainst)) != NULL) {
54 DIR *subDirp = NULL;
55 DIRENT *dirEntry = NULL;
56
57 while ((dirEntry = readdir(pDir)) != NULL) {
58 if (uprv_strcmp(dirEntry->d_name, SKIP1) != 0 && uprv_strcmp(dirEntry->d_name, SKIP2) != 0) {
59 char newpath[MAX_PATH_SIZE] = "";
60 uprv_strcpy(newpath, checkAgainst);
61 uprv_strcat(newpath, U_FILE_SEP_STRING);
62 uprv_strcat(newpath, dirEntry->d_name);
63
64 if ((subDirp = opendir(newpath)) != NULL) {
65 /* If this new path is a directory, make a recursive call with the newpath. */
66 closedir(subDirp);
67 isLatest = isFileModTimeLater(filePath, newpath, isDir);
68 if (!isLatest) {
69 break;
70 }
71 } else {
72 int32_t latest = whichFileModTimeIsLater(filePath, newpath);
73 if (latest < 0 || latest == 2) {
74 isLatest = FALSE;
75 break;
76 }
77 }
78
79 }
80 }
81 closedir(pDir);
82 } else {
83 fprintf(stderr, "Unable to open directory: %s\n", checkAgainst);
84 return FALSE;
85 }
86 #endif
87 } else {
88 if (T_FileStream_file_exists(checkAgainst)) {
89 int32_t latest = whichFileModTimeIsLater(filePath, checkAgainst);
90 if (latest < 0 || latest == 2) {
91 isLatest = FALSE;
92 }
93 } else {
94 isLatest = FALSE;
95 }
96 }
97
98 return isLatest;
99 }
100
101 /* 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)102 static int32_t whichFileModTimeIsLater(const char *file1, const char *file2) {
103 int32_t result = 0;
104 struct stat stbuf1, stbuf2;
105
106 if (stat(file1, &stbuf1) == 0 && stat(file2, &stbuf2) == 0) {
107 time_t modtime1, modtime2;
108 double diff;
109
110 modtime1 = stbuf1.st_mtime;
111 modtime2 = stbuf2.st_mtime;
112
113 diff = difftime(modtime1, modtime2);
114 if (diff < 0.0) {
115 result = 2;
116 } else if (diff > 0.0) {
117 result = 1;
118 }
119
120 } else {
121 fprintf(stderr, "Unable to get stats from file: %s or %s\n", file1, file2);
122 result = -1;
123 }
124
125 return result;
126 }
127
128 /* Swap the file separater character given with the new one in the file path. */
129 U_CAPI void U_EXPORT2
swapFileSepChar(char * filePath,const char oldFileSepChar,const char newFileSepChar)130 swapFileSepChar(char *filePath, const char oldFileSepChar, const char newFileSepChar) {
131 for (int32_t i = 0, length = uprv_strlen(filePath); i < length; i++) {
132 filePath[i] = (filePath[i] == oldFileSepChar ) ? newFileSepChar : filePath[i];
133 }
134 }
135