internalInit
Function parameters
Parameters
Type definitions in this namespace
Types
- ArgIteratorWindows
- Iterator that implements the Windows command-line parsing algorithm.
- ArgIteratorGeneralOptions
- Optional parameters for `ArgIteratorGeneral`
- ArgIterator
- Cross-platform command line argument iterator.
Functions in this namespace
Functions
- getCwd
- The result is a slice of `out_buffer`, from index `0`.
- getCwdAlloc
- Caller must free the returned memory.
- getEnvMap
- Returns a snapshot of the environment variables of the current process.
- getEnvVarOwned
- Caller must free returned memory.
- hasEnvVarConstant
- On Windows, `key` must be valid WTF-8.
- hasNonEmptyEnvVarConstant
- On Windows, `key` must be valid WTF-8.
- parseEnvVarInt
- Parses an environment variable as an integer.
- hasEnvVar
- On Windows, if `key` is not valid [WTF-8](https://simonsapin.github.io/wtf-8/),
- hasNonEmptyEnvVar
- On Windows, if `key` is not valid [WTF-8](https://simonsapin.github.io/wtf-8/),
- getenvW
- Windows-only.
- ArgIteratorGeneral
- A general Iterator to parse a string into a set of arguments
- args
- Holds the command-line arguments, with the program name as the first entry.
- argsWithAllocator
- You must deinitialize iterator's internal buffers by calling `deinit` when done.
- argsAlloc
- Caller must call argsFree on result.
- getUserInfo
- POSIX function which gets a uid from username.
- posixGetUserInfo
- TODO this reads /etc/passwd.
- execv
- Replaces the current process image with the executed process.
- execve
- Replaces the current process image with the executed process.
- totalSystemMemory
- Returns the total system memory, in bytes as a u64.
- cleanExit
- Indicate that we are now terminating with a successful exit code.
- raiseFileDescriptorLimit
- Raise the open file descriptor limit.
- createEnvironFromMap
- Creates a null-delimited environment variable block in the format
- createEnvironFromExisting
- Creates a null-delimited environment variable block in the format
- createWindowsEnvBlock
- Caller must free result.
- fatal
- Logs an error and then terminates the process with exit code 1.
Error sets in this namespace
Error Sets
Tells whether calling the `execv` or `execve` functions will be a compile error.
Values
Source
Implementation
fn internalInit(allocator: Allocator) InitError![][:0]u8 {
var count: usize = undefined;
var buf_size: usize = undefined;
switch (std.os.wasi.args_sizes_get(&count, &buf_size)) {
.SUCCESS => {},
else => |err| return posix.unexpectedErrno(err),
}
if (count == 0) {
return &[_][:0]u8{};
}
const argv = try allocator.alloc([*:0]u8, count);
defer allocator.free(argv);
const argv_buf = try allocator.alloc(u8, buf_size);
switch (std.os.wasi.args_get(argv.ptr, argv_buf.ptr)) {
.SUCCESS => {},
else => |err| return posix.unexpectedErrno(err),
}
var result_args = try allocator.alloc([:0]u8, count);
var i: usize = 0;
while (i < count) : (i += 1) {
result_args[i] = mem.sliceTo(argv[i], 0);
}
return result_args;
}