allocPrintCmd2
Function parameters
Parameters
Type definitions in this namespace
Types
Functions in this namespace
Functions
- make
- If the Step's `make` function reports `error.MakeFailed`, it indicates they
- dump
- For debugging purposes, prints identifying information about this Step.
- evalZigProcess
- Assumes that argv contains `--listen=-` and that the process being spawned
- installFile
- Wrapper around `std.fs.Dir.updateFile` that handles verbose and error output.
- installDir
- Wrapper around `std.fs.Dir.makePathStatus` that handles verbose and error output.
- cacheHit
- Prefer `cacheHitAndWatch` unless you already added watch inputs
- cacheHitAndWatch
- Clears previous watch inputs, if any, and then populates watch inputs from
- writeManifest
- Prefer `writeManifestAndWatch` unless you already added watch inputs
- writeManifestAndWatch
- Clears previous watch inputs, if any, and then populates watch inputs from
- singleUnchangingWatchInput
- For steps that have a single input that never changes when re-running `make`.
- addWatchInput
- Places a *file* dependency on the path.
- addDirectoryWatchInput
- Any changes inside the directory will trigger invalidation.
- addDirectoryWatchInputFromPath
- Any changes inside the directory will trigger invalidation.
- reset
- Implementation detail of file watching and forced rebuilds.
- recursiveReset
- Implementation detail of file watching.
Source
Implementation
pub fn allocPrintCmd2(
arena: Allocator,
opt_cwd: ?[]const u8,
opt_env: ?*const std.process.EnvMap,
argv: []const []const u8,
) Allocator.Error![]u8 {
const shell = struct {
fn escape(writer: *std.Io.Writer, string: []const u8, is_argv0: bool) !void {
for (string) |c| {
if (switch (c) {
else => true,
'%', '+'...':', '@'...'Z', '_', 'a'...'z' => false,
'=' => is_argv0,
}) break;
} else return writer.writeAll(string);
try writer.writeByte('"');
for (string) |c| {
if (switch (c) {
std.ascii.control_code.nul => break,
'!', '"', '$', '\\', '`' => true,
else => !std.ascii.isPrint(c),
}) try writer.writeByte('\\');
switch (c) {
std.ascii.control_code.nul => unreachable,
std.ascii.control_code.bel => try writer.writeByte('a'),
std.ascii.control_code.bs => try writer.writeByte('b'),
std.ascii.control_code.ht => try writer.writeByte('t'),
std.ascii.control_code.lf => try writer.writeByte('n'),
std.ascii.control_code.vt => try writer.writeByte('v'),
std.ascii.control_code.ff => try writer.writeByte('f'),
std.ascii.control_code.cr => try writer.writeByte('r'),
std.ascii.control_code.esc => try writer.writeByte('E'),
' '...'~' => try writer.writeByte(c),
else => try writer.print("{o:0>3}", .{c}),
}
}
try writer.writeByte('"');
}
};
var aw: std.Io.Writer.Allocating = .init(arena);
const writer = &aw.writer;
if (opt_cwd) |cwd| writer.print("cd {s} && ", .{cwd}) catch return error.OutOfMemory;
if (opt_env) |env| {
const process_env_map = std.process.getEnvMap(arena) catch std.process.EnvMap.init(arena);
var it = env.iterator();
while (it.next()) |entry| {
const key = entry.key_ptr.*;
const value = entry.value_ptr.*;
if (process_env_map.get(key)) |process_value| {
if (std.mem.eql(u8, value, process_value)) continue;
}
writer.print("{s}=", .{key}) catch return error.OutOfMemory;
shell.escape(writer, value, false) catch return error.OutOfMemory;
writer.writeByte(' ') catch return error.OutOfMemory;
}
}
shell.escape(writer, argv[0], true) catch return error.OutOfMemory;
for (argv[1..]) |arg| {
writer.writeByte(' ') catch return error.OutOfMemory;
shell.escape(writer, arg, false) catch return error.OutOfMemory;
}
return aw.toOwnedSlice();
}