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fix(config): Proper dereference of ${self.key}

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This commit is contained in:
Michael Carlberg 2016-11-19 19:18:28 +01:00
parent 88c8bbd940
commit 40fcabd644
4 changed files with 39 additions and 17 deletions
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10
include/components/config.hpp
View file

@ -129,7 +129,7 @@ class config {
} else if (path.find("xrdb:") == 0) {
return dereference_xrdb<T>(path.substr(5), value);
} else if ((pos = path.find(".")) != string::npos) {
return dereference_local<T>(path.substr(0, pos), path.substr(pos + 1));
return dereference_local<T>(path.substr(0, pos), path.substr(pos + 1), section);
} else {
throw value_error("Invalid reference defined at [" + build_path(section, key) + "]");
}
@ -142,13 +142,13 @@ class config {
* ${section.key}
*/
template <typename T>
T dereference_local(string section, string key) const {
T dereference_local(string section, string key, string current_section) const {
if (section == "BAR")
m_logger.warn("${BAR.key} is deprecated. Use ${root.key} instead");
section = string_util::replace(section, "BAR", bar_section());
section = string_util::replace(section, "root", bar_section());
section = string_util::replace(section, "self", section);
section = string_util::replace(section, "BAR", bar_section(), 0, 3);
section = string_util::replace(section, "root", bar_section(), 0, 4);
section = string_util::replace(section, "self", current_section, 0, 4);
auto path = build_path(section, key);
auto result = m_ptree.get_optional<T>(path);

4
include/utils/string.hpp
View file

@ -16,8 +16,8 @@ namespace string_util {
string upper(const string& s);
string lower(const string& s);
bool compare(const string& s1, const string& s2);
string replace(const string& haystack, string needle, string replacement);
string replace_all(const string& haystack, string needle, string replacement);
string replace(const string& haystack, string needle, string repl, size_t start = 0, size_t end = string::npos);
string replace_all(const string& haystack, string needle, string repl, size_t start = 0, size_t end = string::npos);
string squeeze(const string& haystack, char needle);
string strip(const string& haystack, char needle);
string strip_trailing_newline(const string& haystack);

28
src/utils/string.cpp
View file

@ -41,27 +41,40 @@ namespace string_util {
/**
* Replace first occurence of needle in haystack
*/
string replace(const string& haystack, string needle, string replacement) {
string replace(const string& haystack, string needle, string reply, size_t start, size_t end) {
string str(haystack);
string::size_type pos;
if (needle != replacement && (pos = str.find(needle)) != string::npos)
str = str.replace(pos, needle.length(), replacement);
if (needle != reply && (pos = str.find(needle, start)) != string::npos) {
if (end == string::npos || pos < end)
str = str.replace(pos, needle.length(), reply);
}
return str;
}
/**
* Replace all occurences of needle in haystack
*/
string replace_all(const string& haystack, string needle, string replacement) {
string replace_all(const string& haystack, string needle, string reply, size_t start, size_t end) {
string replaced;
if (end == string::npos)
end = haystack.length();
for (size_t i = 0; i < haystack.length(); i++) {
if (haystack.compare(i, needle.length(), needle) == 0) {
replaced += replacement;
if (i < start) {
replaced += haystack[i];
} else if (i + needle.length() > end) {
replaced += haystack[i];
} else if (haystack.compare(i, needle.length(), needle) == 0) {
replaced += reply;
i += needle.length() - 1;
} else {
replaced += haystack[i];
}
}
return replaced;
}
@ -70,8 +83,7 @@ namespace string_util {
*/
string squeeze(const string& haystack, char needle) {
string result = haystack;
while (result.find({needle, needle}) != string::npos)
result = replace_all(result, {needle, needle}, {needle});
while (result.find({needle, needle}) != string::npos) result = replace_all(result, {needle, needle}, {needle});
return result;
}

14
tests/unit_tests/utils/string.cpp
View file

@ -14,11 +14,21 @@ int main() {
expect(!string_util::compare("foo", "bar"));
};
"replace"_test = [] { expect(string_util::replace("Foo bar baz", "a", "x") == "Foo bxr baz"); };
"replace"_test = [] {
expect(string_util::replace("abc", "b", ".") == "a.c");
expect(string_util::replace("aaa", "a", ".", 1, 2) == "a.a");
expect(string_util::replace("aaa", "a", ".", 0, 2) == ".aa");
expect(string_util::replace("Foo bar baz", "a", "x") == "Foo bxr baz");
expect(string_util::replace("foooobar", "o", "x", 2, 3) == "foxoobar");
expect(string_util::replace("foooobar", "o", "x", 0, 1) == "foooobar");
};
"replace_all"_test = [] {
expect(string_util::replace_all("Foo bar baz", "a", "x") == "Foo bxr bxz");
expect(string_util::replace_all("Foo bar baza", "a", "x") == "Foo bxr bxzx");
expect(string_util::replace_all("hehehe", "he", "hoo") == "hoohoohoo");
expect(string_util::replace_all("hehehe", "he", "hoo", 0, 2) == "hoohehe");
expect(string_util::replace_all("hehehe", "he", "hoo", 4) == "hehehoo");
expect(string_util::replace_all("hehehe", "he", "hoo", 0, 1) == "hehehe");
expect(string_util::replace_all("131313", "3", "13") == "113113113");
};