1 //===- BuildSystem.cpp - Utilities for use by build systems ---------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements various utilities for use by build systems.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "clang-c/BuildSystem.h"
14 #include "CXString.h"
15 #include "llvm/ADT/SmallString.h"
16 #include "llvm/Support/CBindingWrapping.h"
17 #include "llvm/Support/Chrono.h"
18 #include "llvm/Support/ErrorHandling.h"
19 #include "llvm/Support/Path.h"
20 #include "llvm/Support/VirtualFileSystem.h"
21 #include "llvm/Support/raw_ostream.h"
22
23 using namespace clang;
24 using namespace llvm::sys;
25
clang_getBuildSessionTimestamp(void)26 unsigned long long clang_getBuildSessionTimestamp(void) {
27 return llvm::sys::toTimeT(std::chrono::system_clock::now());
28 }
29
DEFINE_SIMPLE_CONVERSION_FUNCTIONS(llvm::vfs::YAMLVFSWriter,CXVirtualFileOverlay)30 DEFINE_SIMPLE_CONVERSION_FUNCTIONS(llvm::vfs::YAMLVFSWriter,
31 CXVirtualFileOverlay)
32
33 CXVirtualFileOverlay clang_VirtualFileOverlay_create(unsigned) {
34 return wrap(new llvm::vfs::YAMLVFSWriter());
35 }
36
37 enum CXErrorCode
clang_VirtualFileOverlay_addFileMapping(CXVirtualFileOverlay VFO,const char * virtualPath,const char * realPath)38 clang_VirtualFileOverlay_addFileMapping(CXVirtualFileOverlay VFO,
39 const char *virtualPath,
40 const char *realPath) {
41 if (!VFO || !virtualPath || !realPath)
42 return CXError_InvalidArguments;
43 if (!path::is_absolute(virtualPath))
44 return CXError_InvalidArguments;
45 if (!path::is_absolute(realPath))
46 return CXError_InvalidArguments;
47
48 for (path::const_iterator
49 PI = path::begin(virtualPath),
50 PE = path::end(virtualPath); PI != PE; ++PI) {
51 StringRef Comp = *PI;
52 if (Comp == "." || Comp == "..")
53 return CXError_InvalidArguments;
54 }
55
56 unwrap(VFO)->addFileMapping(virtualPath, realPath);
57 return CXError_Success;
58 }
59
60 enum CXErrorCode
clang_VirtualFileOverlay_setCaseSensitivity(CXVirtualFileOverlay VFO,int caseSensitive)61 clang_VirtualFileOverlay_setCaseSensitivity(CXVirtualFileOverlay VFO,
62 int caseSensitive) {
63 if (!VFO)
64 return CXError_InvalidArguments;
65 unwrap(VFO)->setCaseSensitivity(caseSensitive);
66 return CXError_Success;
67 }
68
69 enum CXErrorCode
clang_VirtualFileOverlay_writeToBuffer(CXVirtualFileOverlay VFO,unsigned,char ** out_buffer_ptr,unsigned * out_buffer_size)70 clang_VirtualFileOverlay_writeToBuffer(CXVirtualFileOverlay VFO, unsigned,
71 char **out_buffer_ptr,
72 unsigned *out_buffer_size) {
73 if (!VFO || !out_buffer_ptr || !out_buffer_size)
74 return CXError_InvalidArguments;
75
76 llvm::SmallString<256> Buf;
77 llvm::raw_svector_ostream OS(Buf);
78 unwrap(VFO)->write(OS);
79
80 StringRef Data = OS.str();
81 *out_buffer_ptr = static_cast<char*>(llvm::safe_malloc(Data.size()));
82 *out_buffer_size = Data.size();
83 memcpy(*out_buffer_ptr, Data.data(), Data.size());
84 return CXError_Success;
85 }
86
clang_free(void * buffer)87 void clang_free(void *buffer) {
88 free(buffer);
89 }
90
clang_VirtualFileOverlay_dispose(CXVirtualFileOverlay VFO)91 void clang_VirtualFileOverlay_dispose(CXVirtualFileOverlay VFO) {
92 delete unwrap(VFO);
93 }
94
95
96 struct CXModuleMapDescriptorImpl {
97 std::string ModuleName;
98 std::string UmbrellaHeader;
99 };
100
clang_ModuleMapDescriptor_create(unsigned)101 CXModuleMapDescriptor clang_ModuleMapDescriptor_create(unsigned) {
102 return new CXModuleMapDescriptorImpl();
103 }
104
105 enum CXErrorCode
clang_ModuleMapDescriptor_setFrameworkModuleName(CXModuleMapDescriptor MMD,const char * name)106 clang_ModuleMapDescriptor_setFrameworkModuleName(CXModuleMapDescriptor MMD,
107 const char *name) {
108 if (!MMD || !name)
109 return CXError_InvalidArguments;
110
111 MMD->ModuleName = name;
112 return CXError_Success;
113 }
114
115 enum CXErrorCode
clang_ModuleMapDescriptor_setUmbrellaHeader(CXModuleMapDescriptor MMD,const char * name)116 clang_ModuleMapDescriptor_setUmbrellaHeader(CXModuleMapDescriptor MMD,
117 const char *name) {
118 if (!MMD || !name)
119 return CXError_InvalidArguments;
120
121 MMD->UmbrellaHeader = name;
122 return CXError_Success;
123 }
124
125 enum CXErrorCode
clang_ModuleMapDescriptor_writeToBuffer(CXModuleMapDescriptor MMD,unsigned,char ** out_buffer_ptr,unsigned * out_buffer_size)126 clang_ModuleMapDescriptor_writeToBuffer(CXModuleMapDescriptor MMD, unsigned,
127 char **out_buffer_ptr,
128 unsigned *out_buffer_size) {
129 if (!MMD || !out_buffer_ptr || !out_buffer_size)
130 return CXError_InvalidArguments;
131
132 llvm::SmallString<256> Buf;
133 llvm::raw_svector_ostream OS(Buf);
134 OS << "framework module " << MMD->ModuleName << " {\n";
135 OS << " umbrella header \"";
136 OS.write_escaped(MMD->UmbrellaHeader) << "\"\n";
137 OS << '\n';
138 OS << " export *\n";
139 OS << " module * { export * }\n";
140 OS << "}\n";
141
142 StringRef Data = OS.str();
143 *out_buffer_ptr = static_cast<char*>(llvm::safe_malloc(Data.size()));
144 *out_buffer_size = Data.size();
145 memcpy(*out_buffer_ptr, Data.data(), Data.size());
146 return CXError_Success;
147 }
148
clang_ModuleMapDescriptor_dispose(CXModuleMapDescriptor MMD)149 void clang_ModuleMapDescriptor_dispose(CXModuleMapDescriptor MMD) {
150 delete MMD;
151 }
152