2 // Use of this source code is governed by a BSD-style license that can be
9 #include <string.h>
22   char magic[4];  member
36   int read = file->ReadAtCurrentPos(reinterpret_cast<char*>(&buf), sizeof(buf));  in ReadInt()
40   // Values are stored in network byte order (highest-order byte first).  in ReadInt()
48   int read = tzfile->ReadAtCurrentPos(header->magic, sizeof(header->magic));  in ParseTzifHeader()
49   if (read != sizeof(header->magic)) {  in ParseTzifHeader()
52   if (memcmp(header->magic, "TZif", 4) != 0) {  in ParseTzifHeader()
56   read = tzfile->ReadAtCurrentPos(&header->version, sizeof(header->version));  in ParseTzifHeader()
57   if (read != sizeof(header->version)) {  in ParseTzifHeader()
60   if (header->version != '\0' && header->version != '2' &&  in ParseTzifHeader()
61       header->version != '3') {  in ParseTzifHeader()
65   read = tzfile->ReadAtCurrentPos(header->reserved, sizeof(header->reserved));  in ParseTzifHeader()
66   if (read != sizeof(header->reserved)) {  in ParseTzifHeader()
69   for (size_t i = 0; i < sizeof(header->reserved); i++) {  in ParseTzifHeader()
70     if (header->reserved[i] != 0) {  in ParseTzifHeader()
75   if (!ReadInt(tzfile, &header->ttisgmtcnt) || header->ttisgmtcnt < 0) {  in ParseTzifHeader()
78   if (!ReadInt(tzfile, &header->ttisstdcnt) || header->ttisstdcnt < 0) {  in ParseTzifHeader()
81   if (!ReadInt(tzfile, &header->leapcnt) || header->leapcnt < 0) {  in ParseTzifHeader()
84   if (!ReadInt(tzfile, &header->timecnt) || header->timecnt < 0) {  in ParseTzifHeader()
87   if (!ReadInt(tzfile, &header->typecnt) || header->typecnt < 0) {  in ParseTzifHeader()
90   if (!ReadInt(tzfile, &header->charcnt) || header->charcnt < 0) {  in ParseTzifHeader()
102 base::Optional<std::string> GetPosixTimezone(const base::FilePath& tzif_path) {  in GetPosixTimezone()
116     // Generating a POSIX-style TZ string from a TZif version 1 file is hard;  in GetPosixTimezone()
120     // the newer versions of the timezone-data package.  in GetPosixTimezone()
127   // TZif versions 2 and 3 embed a POSIX-style TZ string after their  in GetPosixTimezone()
151   std::string time_string(tzfile.GetLength() - offset, '\0');  in GetPosixTimezone()
157   // According to the spec, the embedded string is enclosed by '\n' characters.  in GetPosixTimezone()