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author | Feng Xiao <xfxyjwf@gmail.com> | 2014-11-10 17:34:54 -0800 |
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committer | Feng Xiao <xfxyjwf@gmail.com> | 2014-11-10 17:34:54 -0800 |
commit | 6ef984af4b0c63c1c33127a12dcfc8e6359f0c9e (patch) | |
tree | d17c61ff9f3ae28224fbddac6d26bfc59e2cf755 /src/google/protobuf/stubs/strutil.cc | |
parent | baca1a8a1aa180c42de6278d3b8286c4496c6a10 (diff) | |
download | protobuf-6ef984af4b0c63c1c33127a12dcfc8e6359f0c9e.tar.gz protobuf-6ef984af4b0c63c1c33127a12dcfc8e6359f0c9e.tar.bz2 protobuf-6ef984af4b0c63c1c33127a12dcfc8e6359f0c9e.zip |
Down-integrate from internal code base.
Diffstat (limited to 'src/google/protobuf/stubs/strutil.cc')
-rw-r--r-- | src/google/protobuf/stubs/strutil.cc | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/google/protobuf/stubs/strutil.cc b/src/google/protobuf/stubs/strutil.cc index a8982593..86d45685 100644 --- a/src/google/protobuf/stubs/strutil.cc +++ b/src/google/protobuf/stubs/strutil.cc @@ -94,6 +94,34 @@ void StripString(string* s, const char* remove, char replacewith) { } } +void StripWhitespace(string* str) { + int str_length = str->length(); + + // Strip off leading whitespace. + int first = 0; + while (first < str_length && ascii_isspace(str->at(first))) { + ++first; + } + // If entire string is white space. + if (first == str_length) { + str->clear(); + return; + } + if (first > 0) { + str->erase(0, first); + str_length -= first; + } + + // Strip off trailing whitespace. + int last = str_length - 1; + while (last >= 0 && ascii_isspace(str->at(last))) { + --last; + } + if (last != (str_length - 1) && last >= 0) { + str->erase(last + 1, string::npos); + } +} + // ---------------------------------------------------------------------- // StringReplace() // Replace the "old" pattern with the "new" pattern in a string, @@ -1275,5 +1303,33 @@ string ToHex(uint64 num) { return string(bufptr, buf + 16 - bufptr); } +int GlobalReplaceSubstring(const string& substring, + const string& replacement, + string* s) { + GOOGLE_CHECK(s != NULL); + if (s->empty() || substring.empty()) + return 0; + string tmp; + int num_replacements = 0; + int pos = 0; + for (int match_pos = s->find(substring.data(), pos, substring.length()); + match_pos != string::npos; + pos = match_pos + substring.length(), + match_pos = s->find(substring.data(), pos, substring.length())) { + ++num_replacements; + // Append the original content before the match. + tmp.append(*s, pos, match_pos - pos); + // Append the replacement for the match. + tmp.append(replacement.begin(), replacement.end()); + } + // Append the content after the last match. If no replacements were made, the + // original string is left untouched. + if (num_replacements > 0) { + tmp.append(*s, pos, s->length() - pos); + s->swap(tmp); + } + return num_replacements; +} + } // namespace protobuf } // namespace google |