File size: 3,897 Bytes
3148e13 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | // Copyright 2015 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "clparser.h"
#include <algorithm>
#include <assert.h>
#include <string.h>
#include "metrics.h"
#include "string_piece_util.h"
#ifdef _WIN32
#include "includes_normalize.h"
#include "string_piece.h"
#else
#include "util.h"
#endif
using namespace std;
namespace {
/// Return true if \a input ends with \a needle.
bool EndsWith(const string& input, const string& needle) {
return (input.size() >= needle.size() &&
input.substr(input.size() - needle.size()) == needle);
}
} // anonymous namespace
// static
string CLParser::FilterShowIncludes(const string& line,
const string& deps_prefix) {
const string kDepsPrefixEnglish = "Note: including file: ";
const char* in = line.c_str();
const char* end = in + line.size();
const string& prefix = deps_prefix.empty() ? kDepsPrefixEnglish : deps_prefix;
if (end - in > (int)prefix.size() &&
memcmp(in, prefix.c_str(), (int)prefix.size()) == 0) {
in += prefix.size();
while (*in == ' ')
++in;
return line.substr(in - line.c_str());
}
return "";
}
// static
bool CLParser::IsSystemInclude(string path) {
transform(path.begin(), path.end(), path.begin(), ToLowerASCII);
// TODO: this is a heuristic, perhaps there's a better way?
return (path.find("program files") != string::npos ||
path.find("microsoft visual studio") != string::npos);
}
// static
bool CLParser::FilterInputFilename(string line) {
transform(line.begin(), line.end(), line.begin(), ToLowerASCII);
// TODO: other extensions, like .asm?
return EndsWith(line, ".c") ||
EndsWith(line, ".cc") ||
EndsWith(line, ".cxx") ||
EndsWith(line, ".cpp") ||
EndsWith(line, ".c++");
}
// static
bool CLParser::Parse(const string& output, const string& deps_prefix,
string* filtered_output, string* err) {
METRIC_RECORD("CLParser::Parse");
// Loop over all lines in the output to process them.
assert(&output != filtered_output);
size_t start = 0;
bool seen_show_includes = false;
#ifdef _WIN32
IncludesNormalize normalizer(".");
#endif
while (start < output.size()) {
size_t end = output.find_first_of("\r\n", start);
if (end == string::npos)
end = output.size();
string line = output.substr(start, end - start);
string include = FilterShowIncludes(line, deps_prefix);
if (!include.empty()) {
seen_show_includes = true;
string normalized;
#ifdef _WIN32
if (!normalizer.Normalize(include, &normalized, err))
return false;
#else
// TODO: should this make the path relative to cwd?
normalized = include;
uint64_t slash_bits;
CanonicalizePath(&normalized, &slash_bits);
#endif
if (!IsSystemInclude(normalized))
includes_.insert(normalized);
} else if (!seen_show_includes && FilterInputFilename(line)) {
// Drop it.
// TODO: if we support compiling multiple output files in a single
// cl.exe invocation, we should stash the filename.
} else {
filtered_output->append(line);
filtered_output->append("\n");
}
if (end < output.size() && output[end] == '\r')
++end;
if (end < output.size() && output[end] == '\n')
++end;
start = end;
}
return true;
}
|