c34026b101
note: done using ```sh git grep -l "2010-2024 Google" | xargs sed -i 's/2010-2024 Google/2010-2025 Google/' ```
78 lines
3.1 KiB
C++
78 lines
3.1 KiB
C++
// Copyright 2010-2025 Google LLC
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <algorithm>
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#include <string>
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#include <vector>
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#include "absl/strings/str_format.h"
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#include "absl/strings/str_join.h"
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#include "absl/strings/str_split.h"
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#include "ortools/base/logging.h"
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namespace operations_research {
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std::string CropMultiLineString(const std::string& s, int max_line_length,
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int max_num_lines) {
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if (s.empty()) return "";
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std::vector<std::string> lines = absl::StrSplit(s, '\n');
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DCHECK_GE(lines.size(), 1); // Even an empty string yields one (empty) line.
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// We ignore the terminating newline for line accounting, but we do output it
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// back in the end.
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const bool has_terminating_newline = lines.back().empty();
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if (has_terminating_newline) lines.pop_back();
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constexpr char kMultiLineCropTemplate[] = "###% 4d LINES SKIPPED ###";
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constexpr char kSingleLineCropTemplate[] = " ..[% 4d CHARS CROPPED ].. ";
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const int single_line_crop_template_length =
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absl::StrFormat(kSingleLineCropTemplate, 0).size();
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int num_lines_before = -1;
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int num_lines_after = -1;
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int num_lines_cropped = -1;
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if (lines.size() > max_num_lines) {
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num_lines_after = (max_num_lines - 1) / 2;
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// There's a corner case for max_num_lines=0. See the unit test.
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num_lines_before =
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max_num_lines == 0 ? 0 : max_num_lines - 1 - num_lines_after;
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num_lines_cropped = lines.size() - num_lines_before - num_lines_after;
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lines.erase(lines.begin() + num_lines_before + 1,
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lines.end() - num_lines_after);
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// We only fill the special line mentioning the skipped lines after we're
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// done with the horizontal crops, in the loop below.
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lines[num_lines_before].clear();
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}
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for (std::string& line : lines) {
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if (line.size() <= max_line_length) continue;
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const int num_chars_after = std::max(
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0, static_cast<int>(
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(max_line_length - single_line_crop_template_length) / 2));
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const int num_chars_before = std::max(
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0, static_cast<int>(max_line_length - single_line_crop_template_length -
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num_chars_after));
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line = absl::StrCat(
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line.substr(0, num_chars_before),
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absl::StrFormat(
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kSingleLineCropTemplate,
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static_cast<int>(line.size() - num_chars_after - num_chars_before)),
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line.substr(line.size() - num_chars_after));
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}
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if (num_lines_cropped >= 0) {
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lines[num_lines_before] =
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absl::StrFormat(kMultiLineCropTemplate, num_lines_cropped);
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}
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if (has_terminating_newline) lines.push_back("");
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return absl::StrJoin(lines, "\n");
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}
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} // namespace operations_research
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