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cmCommandLineArgument: correctly compute next parse index

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Fixes #21966

Correctly compute the next parse index for `ZeroOrOne` when
it is zero, and for OneOrMore.
This commit is contained in:
Robert Maynard
2021-03-24 14:03:23 -04:00
parent fb91e21e46
commit 79d7bcaf40
4 changed files with 15 additions and 5 deletions
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14
Source/cmCommandLineArgument.h
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@@ -76,8 +76,9 @@ struct cmCommandLineArgument
} else if (this->Type == Values::One || this->Type == Values::ZeroOrOne) {
if (input.size() == this->Name.size()) {
++index;
if (index >= allArgs.size() || allArgs[index][0] == '-') {
auto nextValueIndex = index + 1;
if (nextValueIndex >= allArgs.size() ||
allArgs[nextValueIndex][0] == '-') {
if (this->Type == Values::ZeroOrOne) {
parseState =
this->StoreCall(std::string{}, std::forward<CallState>(state)...)
@@ -87,10 +88,11 @@ struct cmCommandLineArgument
parseState = ParseMode::ValueError;
}
} else {
parseState =
this->StoreCall(allArgs[index], std::forward<CallState>(state)...)
parseState = this->StoreCall(allArgs[nextValueIndex],
std::forward<CallState>(state)...)
? ParseMode::Valid
: ParseMode::Invalid;
index = nextValueIndex;
}
} else {
// parse the string to get the value
@@ -133,7 +135,8 @@ struct cmCommandLineArgument
} else if (this->Type == Values::OneOrMore) {
if (input.size() == this->Name.size()) {
auto nextValueIndex = index + 1;
if (nextValueIndex >= allArgs.size() || allArgs[index + 1][0] == '-') {
if (nextValueIndex >= allArgs.size() ||
allArgs[nextValueIndex][0] == '-') {
parseState = ParseMode::ValueError;
} else {
std::string buffer = allArgs[nextValueIndex++];
@@ -145,6 +148,7 @@ struct cmCommandLineArgument
this->StoreCall(buffer, std::forward<CallState>(state)...)
? ParseMode::Valid
: ParseMode::Invalid;
index = (nextValueIndex - 1);
}
}
}