29 lines
649 B
V
29 lines
649 B
V
module help
|
|
|
|
// TODO: move this file outside internal, and merge it with cmd/tools/modules/vhelp/vhelp.v .
|
|
import os
|
|
import v.pref
|
|
|
|
const (
|
|
unknown_topic = 'V Error: Unknown help topic provided. Use `v help` for usage information.'
|
|
)
|
|
|
|
pub fn print_and_exit(topic string) {
|
|
vexe := pref.vexe_path()
|
|
vroot := os.dir(vexe)
|
|
for b in topic {
|
|
if (b >= `a` && b <= `z`) || b == `-` || (b >= `0` && b <= `9`) {
|
|
continue
|
|
}
|
|
eprintln(unknown_topic)
|
|
exit(1)
|
|
}
|
|
target_topic := os.join_path(vroot, 'cmd', 'v', 'help', '${topic}.txt')
|
|
content := os.read_file(target_topic) or {
|
|
eprintln(unknown_topic)
|
|
exit(1)
|
|
}
|
|
println(content)
|
|
exit(0)
|
|
}
|