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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/ftp/ftp_util.h"
#include <vector>
#include "base/logging.h"
#include "base/string_tokenizer.h"
#include "base/string_util.h"
#include "base/time.h"
#include "base/utf_string_conversions.h"
// For examples of Unix<->VMS path conversions, see the unit test file. On VMS
// a path looks differently depending on whether it's a file or directory.
namespace net {
// static
std::string FtpUtil::UnixFilePathToVMS(const std::string& unix_path) {
if (unix_path.empty())
return std::string();
StringTokenizer tokenizer(unix_path, "/");
std::vector<std::string> tokens;
while (tokenizer.GetNext())
tokens.push_back(tokenizer.token());
if (unix_path[0] == '/') {
// It's an absolute path.
if (tokens.empty()) {
DCHECK_EQ(1U, unix_path.length());
return "[]";
}
if (tokens.size() == 1)
return unix_path.substr(1); // Drop the leading slash.
std::string result(tokens[0] + ":[");
if (tokens.size() == 2) {
// Don't ask why, it just works that way on VMS.
result.append("000000");
} else {
result.append(tokens[1]);
for (size_t i = 2; i < tokens.size() - 1; i++)
result.append("." + tokens[i]);
}
result.append("]" + tokens[tokens.size() - 1]);
return result;
}
if (tokens.size() == 1)
return unix_path;
std::string result("[");
for (size_t i = 0; i < tokens.size() - 1; i++)
result.append("." + tokens[i]);
result.append("]" + tokens[tokens.size() - 1]);
return result;
}
// static
std::string FtpUtil::UnixDirectoryPathToVMS(const std::string& unix_path) {
if (unix_path.empty())
return std::string();
std::string path(unix_path);
if (path[path.length() - 1] != '/')
path.append("/");
// Reuse logic from UnixFilePathToVMS by appending a fake file name to the
// real path and removing it after conversion.
path.append("x");
path = UnixFilePathToVMS(path);
return path.substr(0, path.length() - 1);
}
// static
std::string FtpUtil::VMSPathToUnix(const std::string& vms_path) {
if (vms_path.empty())
return ".";
if (vms_path == "[]")
return "/";
std::string result(vms_path);
if (vms_path[0] == '[') {
// It's a relative path.
ReplaceFirstSubstringAfterOffset(&result, 0, "[.", "");
} else {
// It's an absolute path.
result.insert(0, "/");
ReplaceSubstringsAfterOffset(&result, 0, ":[000000]", "/");
ReplaceSubstringsAfterOffset(&result, 0, ":[", "/");
}
std::replace(result.begin(), result.end(), '.', '/');
std::replace(result.begin(), result.end(), ']', '/');
// Make sure the result doesn't end with a slash.
if (result[result.length() - 1] == '/')
result = result.substr(0, result.length() - 1);
return result;
}
// static
bool FtpUtil::ThreeLetterMonthToNumber(const string16& text, int* number) {
const static char* months[] = { "jan", "feb", "mar", "apr", "may", "jun",
"jul", "aug", "sep", "oct", "nov", "dec" };
for (size_t i = 0; i < arraysize(months); i++) {
if (LowerCaseEqualsASCII(text, months[i])) {
*number = i + 1;
return true;
}
}
// Special cases for directory listings in German (other three-letter month
// abbreviations are the same as in English). Note that we don't need to do
// a case-insensitive compare here. Only "ls -l" style listings may use
// localized month names, and they will always start capitalized. Also,
// converting non-ASCII characters to lowercase would be more complicated.
if (text == UTF8ToUTF16("M\xc3\xa4r")) {
// The full month name is M-(a-umlaut)-rz (March), which is M-(a-umlaut)r
// when abbreviated.
*number = 3;
return true;
}
if (text == ASCIIToUTF16("Mai")) {
*number = 5;
return true;
}
if (text == ASCIIToUTF16("Okt")) {
*number = 10;
return true;
}
if (text == ASCIIToUTF16("Dez")) {
*number = 12;
return true;
}
return false;
}
// static
bool FtpUtil::LsDateListingToTime(const string16& month, const string16& day,
const string16& rest, base::Time* time) {
base::Time::Exploded time_exploded = { 0 };
if (!ThreeLetterMonthToNumber(month, &time_exploded.month))
return false;
if (!StringToInt(day, &time_exploded.day_of_month))
return false;
if (!StringToInt(rest, &time_exploded.year)) {
// Maybe it's time. Does it look like time (MM:HH)?
if (rest.length() != 5 || rest[2] != ':')
return false;
if (!StringToInt(rest.substr(0, 2), &time_exploded.hour))
return false;
if (!StringToInt(rest.substr(3, 2), &time_exploded.minute))
return false;
// Use current year.
base::Time::Exploded now_exploded;
base::Time::Now().LocalExplode(&now_exploded);
time_exploded.year = now_exploded.year;
}
// We don't know the time zone of the listing, so just use local time.
*time = base::Time::FromLocalExploded(time_exploded);
return true;
}
// static
string16 FtpUtil::GetStringPartAfterColumns(const string16& text, int columns) {
size_t pos = 0;
for (int i = 0; i < columns; i++) {
// Skip the leading whitespace.
while (pos < text.length() && isspace(text[pos]))
pos++;
// Skip the actual text of i-th column.
while (pos < text.length() && !isspace(text[pos]))
pos++;
}
string16 result(text.substr(pos));
TrimWhitespace(result, TRIM_ALL, &result);
return result;
}
} // namespace
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