desktop/win32/source/extendloaderenvironment.hxx

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  30
  31 #ifndef INCLUDED_DESKTOP_WIN32_SOURCE_EXTENDLOADERENVIRONMENT_HXX
  32 #define INCLUDED_DESKTOP_WIN32_SOURCE_EXTENDLOADERENVIRONMENT_HXX
  33
  34 #include "sal/config.h"
  35
  36 #include <cstddef>
  37
  38 #include <tchar.h>
  39
  40 #define MY_LENGTH(s) (sizeof (s) / sizeof *(s) - 1)
  41 #define MY_STRING(s) (s), MY_LENGTH(s)
  42
  43 namespace desktop_win32 {
  44
  45 inline WCHAR * commandLineAppend(
  46     WCHAR * buffer, WCHAR const * text, std::size_t length)
  47 {
  48     wcsncpy(buffer, text, length + 1); // trailing null
  49     return buffer + length;
  50 }
  51
  52 inline WCHAR * commandLineAppend(WCHAR * buffer, WCHAR const * text) {
  53     return commandLineAppend(buffer, text, wcslen(text));
  54 }
  55
  56 inline WCHAR * commandLineAppendEncoded(WCHAR * buffer, WCHAR const * text) {
  57     std::size_t n = 0;
  58     for (;;) {
  59         WCHAR c = *text++;
  60         if (c == L'\0') {
  61             break;
  62         } else if (c == L'$') {
  63             buffer = commandLineAppend(buffer, MY_STRING(L"\\$"));
  64             n = 0;
  65         } else if (c == L'\\') {
  66             buffer = commandLineAppend(buffer, MY_STRING(L"\\\\"));
  67             n += 2;
  68         } else {
  69             *buffer++ = c;
  70             n = 0;
  71         }
  72     }
  73     // The command line will continue with a double quote, so double any
  74     // preceding backslashes as required by Windows:
  75     for (std::size_t i = 0; i < n; ++i) {
  76         *buffer++ = L'\\';
  77     }
  78     *buffer = L'\0';
  79     return buffer;
  80 }
  81
  82 // Set the PATH environment variable in the current (loader) process, so that a
  83 // following CreateProcess has the necessary environment:
  84 //
  85 // @param binPath
  86 // Must point to an array of size at least MAX_PATH.  Is filled with the null
  87 // terminated full path to the "bin" file corresponding to the current
  88 // executable.
  89 //
  90 // @param iniDirectory
  91 // Must point to an array of size at least MAX_PATH.  Is filled with the null
  92 // terminated full directory path (ending in "\") to the "ini" file
  93 // corresponding to the current executable.
  94 void extendLoaderEnvironment(WCHAR * binPath, WCHAR * iniDirectory);
  95
  96 }
  97
  98 #endif