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0dcc1e0cce
* src/frontends/qt2/QPrefs.C: (internal_path_list, external_path_list): Handle the PATH prefix style according to the user-prefs style. (QPrefs::apply, QPrefs::update_contents): fix inverted logic of rc.cygwin_path_fix * src/support/os.h: New declarations to deal with PATH lists. * src/support/os_cygwin.C: Major rewrite to account for path style problems. * src/support/os_unix.C: * src/support/os_win32.C: Stub functions for PATH lists. * src/support/environment.C: fix bug 2344: Wrong path_prefix handling in cygwin * src/support/filetools.C (ChangeExtension): fix for the path style to be written in .tex files (cygwin related). git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@13558 a592a061-630c-0410-9148-cb99ea01b6c8
140 lines
3.4 KiB
C
140 lines
3.4 KiB
C
/**
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* \file environment.C
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Angus Leeming
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* \author João Luis M. Assirati
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* \author Lars Gullik Bjønnes
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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#include "support/environment.h"
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#include "support/os.h"
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#include <boost/tokenizer.hpp>
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#include <cstdlib>
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#include <map>
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#include <sstream>
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using std::string;
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using std::vector;
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namespace lyx {
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namespace support {
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string const getEnv(string const & envname)
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{
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// f.ex. what about error checking?
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char const * const ch = getenv(envname.c_str());
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string const envstr = !ch ? "" : ch;
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return envstr;
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}
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vector<string> const getEnvPath(string const & name)
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{
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typedef boost::char_separator<char> Separator;
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typedef boost::tokenizer<Separator> Tokenizer;
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string const env_var = getEnv(name);
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Separator const separator(string(1, os::path_separator()).c_str());
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Tokenizer const tokens(env_var, separator);
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Tokenizer::const_iterator it = tokens.begin();
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Tokenizer::const_iterator const end = tokens.end();
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std::vector<string> vars;
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for (; it != end; ++it)
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vars.push_back(os::internal_path(*it));
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return vars;
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}
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bool setEnv(string const & name, string const & value)
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{
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// CHECK Look at and fix this.
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// f.ex. what about error checking?
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#if defined (HAVE_SETENV)
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int const retval = ::setenv(name.c_str(), value.c_str(), true);
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#elif defined (HAVE_PUTENV)
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static std::map<string, char *> varmap;
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string envstr = name + '=' + value;
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char * newptr = new char[envstr.size() + 1];
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envstr.copy(newptr, envstr.length());
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newptr[envstr.length()] = '\0';
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int const retval = ::putenv(newptr);
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char * oldptr = varmap[name];
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if (oldptr)
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delete oldptr;
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varmap[name] = newptr;
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#else
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#error No environment-setting function has been defined.
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#endif
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return retval == 0;
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}
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void setEnvPath(string const & name, vector<string> const & env)
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{
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char const separator(os::path_separator());
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std::ostringstream ss;
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vector<string>::const_iterator const begin = env.begin();
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vector<string>::const_iterator const end = env.end();
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vector<string>::const_iterator it = begin;
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for (; it != end; ++it) {
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if (it != begin)
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ss << separator;
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#if defined(__CYGWIN__) || defined(__CYGWIN32__)
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// On cygwin, os::external_path returns either posix or
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// pseudo-win style paths, but here we always need posix style.
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// This fixes bug 2344.
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ss << os::internal_path(*it);
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#else
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ss << os::external_path(*it);
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#endif
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}
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setEnv(name, ss.str());
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}
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void prependEnvPath(string const & name, string const & prefix)
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{
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vector<string> env_var = getEnvPath(name);
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typedef boost::char_separator<char> Separator;
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typedef boost::tokenizer<Separator> Tokenizer;
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Separator const separator(string(1, os::path_separator()).c_str());
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// Prepend each new element to the list, removing identical elements
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// that occur later in the list.
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Tokenizer const tokens(prefix, separator);
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vector<string> reversed_tokens(tokens.begin(), tokens.end());
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typedef vector<string>::const_reverse_iterator token_iterator;
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token_iterator it = reversed_tokens.rbegin();
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token_iterator const end = reversed_tokens.rend();
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for (; it != end; ++it) {
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vector<string>::iterator remove_it =
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std::remove(env_var.begin(), env_var.end(), *it);
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env_var.erase(remove_it, env_var.end());
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env_var.insert(env_var.begin(), *it);
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}
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setEnvPath(name, env_var);
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}
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} // namespace support
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} // namespace lyx
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