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working_files: normalize \r\n and \n to \n

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Clients may normalize end-of-line sequences, thus cause a mismatch
between index_lines and buffer_lines.

Thanks to CXuesong for reporting this issue!
This commit is contained in:
Fangrui Song 2019-03-01 17:30:53 -08:00
parent baae464195
commit ce3769f066
1 changed files with 11 additions and 8 deletions
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19
src/working_files.cc
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@ -12,7 +12,6 @@
#include <chrono>
#include <climits>
#include <numeric>
#include <sstream>
namespace chrono = std::chrono;
using namespace clang;
@ -43,13 +42,17 @@ Position GetPositionForOffset(const std::string &content, int offset) {
return {line, col};
}
std::vector<std::string> ToLines(const std::string &content) {
std::vector<std::string> result;
std::istringstream lines(content);
std::string line;
while (getline(lines, line))
result.push_back(line);
return result;
std::vector<std::string> ToLines(const std::string &c) {
std::vector<std::string> ret;
int last = 0, e = c.size();
for (int i = 0; i < e; i++)
if (c[i] == '\n') {
ret.emplace_back(&c[last], i - last - (i && c[i - 1] == '\r'));
last = i + 1;
}
if (last < e)
ret.emplace_back(&c[last], e - last);
return ret;
}
// Computes the edit distance of strings [a,a+la) and [b,b+lb) with Eugene W.