[C++][FlightSQL] Remove boost/algorithm/string.h dependency

[kou]

Describe the enhancement requested

It's used by:

arrow/cpp/src/arrow/flight/sql/example/sqlite_server.cc

Line 21 in d97e7ab

#include <boost/algorithm/string.hpp>

arrow/cpp/src/arrow/flight/sql/test_app_cli.cc

Line 22 in d97e7ab

#include <boost/algorithm/string.hpp>

We need alternative of boost::istarts_with().

We can use arrow::internal::AsciiEqualsCaseInsensitive() for boost::iequals().

Component(s)

C++, FlightRPC

[Ziy1-Tan]

This snippet may work:

bool ci_start_with(std::string_view str, std::string_view prefix) {
    if (str.size() < prefix.size()) {
        return false;
    }

    for (size_t i = 0; i < prefix.size(); ++i) {
        if (std::tolower(static_cast<unsigned char>(str[i])) != 
            std::tolower(static_cast<unsigned char>(prefix[i]))) {
            return false;
        }
    }

    return true;
}

[kou]

Do you want to work on this?
If so, could you open a PR?

[Ziy1-Tan]

take

[Reranko05]

Hi @Ziy1-Tan, I noticed this issue has been assigned for a while and I couldn't find an associated PR. Are you still working on it?

If not, I'd be happy to pick it up.

[Ziy1-Tan]

Hi @Ziy1-Tan, I noticed this issue has been assigned for a while and I couldn't find an associated PR. Are you still working on it?

If not, I'd be happy to pick it up.

Feel free to pick :)

[Reranko05]

@kou I've opened a PR for this: #50241

It replaces the remaining boost::iequals() and boost::istarts_with() usages in the two files mentioned in the issue and removes the boost/algorithm/string.hpp dependency there.

[lidavidm]

Issue resolved by pull request 50241
#50241