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// **********************************************************************
//
// Copyright (c) 2003-2008 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#include <Slice/Util.h>
#include <IceUtil/Unicode.h>
#include <IceUtil/FileUtil.h>
#include <climits>
#include <unistd.h> // For readlink()
#ifdef __BCPLUSPLUS__
# include <dir.h>
#endif
using namespace std;
using namespace Slice;
static string
normalizePath(const string& path)
{
string result = path;
replace(result.begin(), result.end(), '\\', '/');
string::size_type pos;
while((pos = result.find("//")) != string::npos)
{
result.replace(pos, 2, "/");
}
pos = 0;
while((pos = result.find("/./", pos)) != string::npos)
{
result.erase(pos, 2);
}
pos = 0;
while((pos = result.find("/..", pos)) != string::npos)
{
string::size_type last = result.find_last_of("/", pos - 1);
if(last != string::npos && result.substr(last, 4) != "/../")
{
result.erase(last, pos - last + 3);
pos = last;
}
else
{
++pos;
}
}
if(result.size() > 1) // Remove trailing "/" or "/."
{
if(result[result.size() - 1] == '/')
{
result.erase(result.size() - 1);
}
else if(result[result.size() - 2] == '/' && result[result.size() - 1] == '.')
{
result.erase(result.size() - (result.size() == 2 ? 1 : 2));
}
}
return result;
}
string
Slice::fullPath(const string& path)
{
#ifdef _WIN32
if(!IceUtilInternal::isAbsolutePath(path))
{
wchar_t cwdbuf[_MAX_PATH];
if(_wgetcwd(cwdbuf, _MAX_PATH) != NULL)
{
return normalizePath(IceUtil::wstringToString(cwdbuf) + "/" + path);
}
}
return normalizePath(path);
#else
string result = path;
if(!IceUtilInternal::isAbsolutePath(result))
{
char cwdbuf[PATH_MAX];
if(::getcwd(cwdbuf, PATH_MAX) != NULL)
{
result = string(cwdbuf) + '/' + result;
}
}
result = normalizePath(result);
string::size_type beg = 0;
string::size_type next;
do
{
string subpath;
next = result.find('/', beg + 1);
if(next == string::npos)
{
subpath = result;
}
else
{
subpath = result.substr(0, next);
}
char buf[PATH_MAX + 1];
int len = readlink(subpath.c_str(), buf, sizeof(buf));
if(len > 0)
{
buf[len] = '\0';
string linkpath = buf;
if(!IceUtilInternal::isAbsolutePath(linkpath)) // Path relative to the location of the link
{
string::size_type pos = subpath.rfind('/');
assert(pos != string::npos);
linkpath = subpath.substr(0, pos + 1) + linkpath;
}
result = normalizePath(linkpath) + (next != string::npos ? result.substr(next) : string());
beg = 0;
next = 0;
}
else
{
beg = next;
}
}
while(next != string::npos);
return result;
#endif
}
string
Slice::changeInclude(const string& orig, const vector<string>& includePaths)
{
string file = fullPath(orig);
//
// Compare each include path against the included file and select
// the path that produces the shortest relative filename.
//
string result = file;
for(vector<string>::const_iterator p = includePaths.begin(); p != includePaths.end(); ++p)
{
if(file.compare(0, p->length(), *p) == 0)
{
string s = file.substr(p->length() + 1); // + 1 for the '/'
if(s.size() < result.size())
{
result = s;
}
}
}
if(result == file)
{
//
// Don't return a full path if we couldn't reduce the given path, instead
// return the normalized given path.
//
result = normalizePath(orig);
}
string::size_type pos;
if((pos = result.rfind('.')) != string::npos)
{
result.erase(pos);
}
return result;
}
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