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Expose way to enumerate over file paths in coral::fs

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kayomn 2023-02-24 17:23:18 +00:00
parent 329fca3929
commit 7a6731df8e
1 changed files with 19 additions and 17 deletions
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36
source/coral/files.cpp
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@ -17,11 +17,11 @@ export namespace coral {
*/ */
static char const seperator = '/'; static char const seperator = '/';
constexpr path() : buffer{0} { constexpr path() {
this->buffer[max] = max; this->buffer[max] = max;
} }
template<usize text_size> constexpr path(char const(&text)[text_size]) : path{} { template<usize text_size> constexpr path(char const(&text)[text_size]) {
static_assert(text_size <= max); static_assert(text_size <= max);
for (usize i = 0; i < text_size; i += 1) this->buffer[i] = text[i]; for (usize i = 0; i < text_size; i += 1) this->buffer[i] = text[i];
@ -53,8 +53,7 @@ export namespace coral {
} }
/** /**
* Compares the path to `that`, returning the difference between the two paths or `0` if * Compares the path to `that`, returning the difference between the two paths or `0` if they are identical.
* they are identical.
*/ */
constexpr size compare(path const & that) const { constexpr size compare(path const & that) const {
return coral::compare(this->as_slice().as_bytes(), that.as_slice().as_bytes()); return coral::compare(this->as_slice().as_bytes(), that.as_slice().as_bytes());
@ -68,8 +67,7 @@ export namespace coral {
} }
/** /**
* Tests the path against `that` for equality, returning `true` if they are identical, * Tests the path against `that` for equality, returning `true` if they are identical, otherwise `false`.
* otherwise `false`.
*/ */
constexpr bool equals(path const & that) const { constexpr bool equals(path const & that) const {
return coral::equals(this->as_slice().as_bytes(), that.as_slice().as_bytes()); return coral::equals(this->as_slice().as_bytes(), that.as_slice().as_bytes());
@ -103,7 +101,7 @@ export namespace coral {
} }
private: private:
char buffer[max + 1]; char buffer[max + 1]{0};
}; };
struct file_reader : public reader { struct file_reader : public reader {
@ -133,25 +131,29 @@ export namespace coral {
virtual ~fs() {}; virtual ~fs() {};
/**
* Attempts to read the files in `files_path`, calling `apply` for each of the files encountered with the
* fully-qualified file path. If either no files are found or the file-system does not support the operation,
* `apply` is never caled.
*
* `false` may be returned inside of `apply` to halt the enumeration.
*/
virtual void enumerate_files(path const & files_path, closure<bool(slice<path const>)> const & apply) {}
/** /**
* Queries the file-system for its global [access_rules], returning them. * Queries the file-system for its global [access_rules], returning them.
*/ */
virtual access_rules query_access() = 0; virtual access_rules query_access() = 0;
/** /**
* Attempts to read the file in the file system located at `file_path` relative, calling * Attempts to read the file in `file_path`, calling `then` if it was successfully opened for reading.
* `then` if it was successfully opened for reading.
*
* Once `then` returns, access to the file is closed automatically.
*/ */
virtual void read_file(path const & file_path, closure<void(file_reader &)> const & then) = 0; virtual void read_file(path const & file_path, closure<void(file_reader &)> const & then) {}
/** /**
* Attempts to write the file in the file system located at `file_path` relative, calling * Attempts to write the file in the file system located at `file_path`, calling `then` if it was successfully
* `then` if it was successfully opened for writing. * opened for writing.
*
* Once `then` returns, access to the file is closed automatically.
*/ */
virtual void write_file(path const & file_path, closure<void(file_writer &)> const & then) = 0; virtual void write_file(path const & file_path, closure<void(file_writer &)> const & then) {}
}; };
} }