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Completed cosing of substring.

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This commit is contained in:
Brad Arant 2024-08-08 11:42:09 -07:00
parent 39fd88cad9
commit a1cc142a59
2 changed files with 13 additions and 1 deletions
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7
ZString.cpp
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@ -171,6 +171,13 @@ namespace coreutils {
} }
ZString ZString::substring(int start, int len) { ZString ZString::substring(int start, int len) {
char *end = data + length;
char *startChar = data + start;
char *endChar = startChar + len;
char newlen = endChar > end ? endChar - end: len;
if(startChar < end) {
return ZString(startChar, newlen);
}
return ZString(); return ZString();
} }

5
testing/zstring_test.cpp
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@ -86,5 +86,10 @@ int main(int argc, char **argv) {
coreutils::ZString test15("xyx"); coreutils::ZString test15("xyx");
std::cout << test14.startsWithDouble() << ":" << test15.startsWithDouble() << std::endl; std::cout << test14.startsWithDouble() << ":" << test15.startsWithDouble() << std::endl;
coreutils::ZString test16("This is a test of substring");
std::cout << test16.substring(10) << std::endl;
std::cout << test16.substring(10, 4) << std::endl;
std::cout << test16.substring(0, 7) << std::endl;
std::cout << test16.substring(18, 20) << std::endl;
} }