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Merge #9686 'win/Lua: monkey-patch os.getenv()'

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fixes #9681
This commit is contained in:
Justin M. Keyes
2019-03-16 20:28:52 +01:00
parent 8d00393d0c c9264e6d52
commit 11a481f711
4 changed files with 86 additions and 21 deletions
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43
src/nvim/os/env.c
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@@ -151,25 +151,36 @@ int os_unsetenv(const char *name)
char *os_getenvname_at_index(size_t index)
{
#ifdef _WIN32
// Check if index is inside the environ array and is not the last element.
for (size_t i = 0; i <= index; i++) {
if (_wenviron[i] == NULL) {
return NULL;
}
}
wchar_t *utf16_str = _wenviron[index];
char *utf8_str;
int conversion_result = utf16_to_utf8(utf16_str, &utf8_str);
if (conversion_result != 0) {
EMSG2("utf16_to_utf8 failed: %d", conversion_result);
wchar_t *env = GetEnvironmentStringsW();
if (!env) {
return NULL;
}
size_t namesize = 0;
while (utf8_str[namesize] != '=' && utf8_str[namesize] != NUL) {
namesize++;
char *name = NULL;
size_t current_index = 0;
// GetEnvironmentStringsW() result has this format:
// var1=value1\0var2=value2\0...varN=valueN\0\0
for (wchar_t *it = env; *it != L'\0' || *(it + 1) != L'\0'; it++) {
if (index == current_index) {
char *utf8_str;
int conversion_result = utf16_to_utf8(it, &utf8_str);
if (conversion_result != 0) {
EMSG2("utf16_to_utf8 failed: %d", conversion_result);
break;
}
size_t namesize = 0;
while (utf8_str[namesize] != '=' && utf8_str[namesize] != NUL) {
namesize++;
}
name = (char *)vim_strnsave((char_u *)utf8_str, namesize);
xfree(utf8_str);
break;
}
if (*it == L'\0') {
current_index++;
}
}
char *name = (char *)vim_strnsave((char_u *)utf8_str, namesize);
xfree(utf8_str);
FreeEnvironmentStringsW(env);
return name;
#else
# if defined(HAVE__NSGETENVIRON)