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Use mmap_data more widely

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topjohnwu
2021-11-30 01:50:55 -08:00
parent 2d82ad93dd
commit 1443a5b175
19 changed files with 168 additions and 276 deletions
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57
native/jni/utils/files.hpp
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@@ -26,16 +26,36 @@ struct file_attr {
char con[128];
};
struct raw_file {
struct byte_data {
using str_pairs = std::initializer_list<std::pair<std::string_view, std::string_view>>;
uint8_t *buf = nullptr;
size_t sz = 0;
int patch(str_pairs list) { return patch(true, list); }
int patch(bool log, str_pairs list);
bool contains(std::string_view pattern, bool log = true) const;
protected:
void swap(byte_data &o);
};
struct raw_file : public byte_data {
std::string path;
file_attr attr;
uint8_t *buf;
size_t sz;
raw_file() : attr({}), buf(nullptr), sz(0) {}
raw_file() : attr{} {}
raw_file(const raw_file&) = delete;
raw_file(raw_file &&o);
~raw_file();
raw_file(raw_file &&o) : path(std::move(o.path)), attr(o.attr) { swap(o); }
~raw_file() { free(buf); }
};
struct mmap_data : public byte_data {
mmap_data() = default;
mmap_data(const mmap_data&) = delete;
mmap_data(mmap_data &&o) { swap(o); }
mmap_data(const char *name, bool rw = false);
~mmap_data() { if (buf) munmap(buf, sz); }
mmap_data& operator=(mmap_data &&other) { swap(other); return *this; }
};
ssize_t fd_path(int fd, char *path, size_t size);
@@ -67,7 +87,6 @@ static inline void file_readline(const char *file,
}
void parse_prop_file(const char *file,
const std::function<bool(std::string_view, std::string_view)> &fn);
void *__mmap(const char *filename, size_t *size, bool rw);
void frm_rf(int dirfd);
void clone_dir(int src, int dest);
void parse_mnt(const char *file, const std::function<bool(mntent*)> &fn);
@@ -86,30 +105,6 @@ void fd_full_read(int fd, T &buf, size_t &size) {
fd_full_read(fd, reinterpret_cast<void**>(&buf), &size);
}
template <typename B>
void mmap_ro(const char *filename, B &buf, size_t &sz) {
buf = (B) __mmap(filename, &sz, false);
}
template <typename B, typename L>
void mmap_ro(const char *filename, B &buf, L &sz) {
size_t __sz;
buf = (B) __mmap(filename, &__sz, false);
sz = __sz;
}
template <typename B>
void mmap_rw(const char *filename, B &buf, size_t &sz) {
buf = (B) __mmap(filename, &sz, true);
}
template <typename B, typename L>
void mmap_rw(const char *filename, B &buf, L &sz) {
size_t __sz;
buf = (B) __mmap(filename, &__sz, true);
sz = __sz;
}
using sFILE = std::unique_ptr<FILE, decltype(&fclose)>;
using sDIR = std::unique_ptr<DIR, decltype(&closedir)>;
sDIR make_dir(DIR *dp);